CN111119410A - Column splicing structure and method suitable for reinforced concrete assembled structure - Google Patents
Column splicing structure and method suitable for reinforced concrete assembled structure Download PDFInfo
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- CN111119410A CN111119410A CN202010058796.1A CN202010058796A CN111119410A CN 111119410 A CN111119410 A CN 111119410A CN 202010058796 A CN202010058796 A CN 202010058796A CN 111119410 A CN111119410 A CN 111119410A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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Abstract
A column splicing structure and method suitable for a reinforced concrete fabricated structure, the structure is as follows: a plurality of round holes are uniformly formed in the pipe body of the inserted circular steel pipe, an embedded section A of the round steel pipe is embedded in the center of the lower end part of the prefabricated upper layer reinforced concrete column, and an exposed section A of the round steel pipe is exposed outside; the embedded sections B of the positioning threaded steel rods are respectively embedded around the lower end part of the prefabricated upper layer reinforced concrete column, and the exposed sections B of the positioning threaded steel rods are exposed outside; the inner diameter of the sleeved round steel pipe is slightly larger than the outer diameter of the inserted round steel pipe, and the sleeved round steel pipe is embedded in the center of the upper end part of the prefabricated lower layer reinforced concrete column; and the plurality of positioning internal thread sleeves are embedded around the upper end part of the prefabricated lower layer reinforced concrete column. The method comprises the following steps: pouring grouting material or engineering glue in advance in the sleeve-connected round steel pipe and the positioning internal thread sleeve; and hoisting and inserting the upper layer splicing body into the lower layer splicing body. The structure and the method can effectively ensure the rigidity and the bearing capacity of the column splicing part and ensure the splicing quality.
Description
Technical Field
The invention belongs to the technical field of building structures, and particularly relates to a column splicing structure and method suitable for a reinforced concrete assembled structure.
Background
The prefabricated reinforced concrete column has the advantages of controllable product quality, environmental protection, convenience in construction and the like. The connection mode between the reinforced concrete columns is one of important connection modes in an assembly structure system, the reliability of the assembly structure is influenced, and the construction speed and the assembly degree are also influenced, so that the connection structure of the splicing nodes between the reinforced concrete columns needs to have the bearing strength, and the construction method is as simple as possible.
In the prior art, the connection between the assembled reinforced concrete columns is mainly realized by the way that the steel bars exposed at the end parts of the steel tube concrete columns and the sleeves embedded at the end parts of the steel tube concrete columns are mutually spliced and welded, and the way has the disadvantages of low bearing strength, inconvenient construction process and reduced construction quality and speed. In addition, the splicing structure in the prior art is not beneficial to the quality detection process, and the difficulty of quality detection is increased.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a column splicing structure suitable for a reinforced concrete assembly type structure, which can effectively ensure the rigidity and the bearing capacity of the column splicing part, ensure the splicing quality and avoid the problems of insufficient connection and inconvenient quality inspection of the traditional splicing structure. The method can conveniently finish the splicing process of the reinforced concrete columns, can ensure that the construction efficiency is improved and the construction quality is ensured, and is convenient for quality inspection.
In order to achieve the above object, the present invention provides a column splicing structure suitable for a reinforced concrete fabricated structure, comprising an upper layer splicing body and a lower layer splicing body;
the upper splicing body consists of a prefabricated upper reinforced concrete column, an inserted circular steel tube and a plurality of positioning threaded steel rods; the pipe body of the inserted circular steel pipe is uniformly provided with a plurality of circular holes which are divided into an upper embedded section A and a lower exposed section A, the embedded section A is embedded in the center of the lower end part of the prefabricated upper layer reinforced concrete column, and the exposed section A is exposed outside the prefabricated upper layer reinforced concrete column; the positioning threaded steel bars are divided into an upper embedded section B and a lower exposed section B, the embedded sections B of the positioning threaded steel bars are respectively embedded around the lower end part of the prefabricated upper layer reinforced concrete column, and the exposed sections B of the positioning threaded steel bars are exposed outside the prefabricated upper layer reinforced concrete column;
the lower layer splicing body consists of a prefabricated lower layer reinforced concrete column, a sleeved circular steel tube and a plurality of positioning internal thread sleeves; the inner diameter of the sleeved round steel pipe is slightly larger than the outer diameter of the inserted round steel pipe, the height of the sleeved round steel pipe is not smaller than the height of the exposed section A, the sleeved round steel pipe is embedded in the center of the upper end part of the prefabricated lower layer reinforced concrete column, and the upper end surface of the sleeved round steel pipe is flush with the upper end surface of the prefabricated lower layer reinforced concrete column; the positioning internal thread sleeves and the positioning threaded steel rods are arranged in a one-to-one correspondence manner, the inner diameter of each positioning internal thread sleeve is slightly larger than the outer diameter of each positioning threaded steel rod, and the height of each positioning internal thread sleeve is not smaller than that of the exposed section B; the positioning inner thread sleeves are embedded around the upper end part of the prefabricated lower layer reinforced concrete column, and the upper end surfaces of the positioning inner thread sleeves are flush with the upper end surface of the prefabricated lower layer reinforced concrete column;
the exposed section A is inserted in the sleeved round steel pipe, the exposed sections B of the positioning threaded steel rods are respectively inserted in the positioning internal thread sleeves to realize fixed splicing between the upper splicing body and the lower splicing body, and the exposed section A and the gaps between the sleeved round steel pipes, the exposed sections B and the positioning internal thread sleeves and the interiors of the sleeved round steel pipes are filled with grouting materials or engineering glue.
Preferably, the number of the positioning threaded steel bars and the number of the positioning internal thread sleeves are four, and the positioning threaded steel bars and the positioning internal thread sleeves are respectively arranged close to four corners of the prefabricated upper layer reinforced concrete column and four corners of the prefabricated lower layer reinforced concrete column.
Further, in order to ensure the connection strength after splicing, the length of the spliced circular steel tube is greater than or equal to 1/5 of the height of the prefabricated upper layer reinforced concrete column; the outer diameter of the inserted circular steel tube is 1/3 of the side length of the prefabricated upper layer reinforced concrete column; the height of the embedded section A is equal to that of the exposed section A; the length of the sleeved round steel pipe is 50mm more than that of the exposed section A; the inner diameter of the sleeved circular steel tube is 100mm more than the outer diameter of the inserted circular steel tube.
Further, in order to ensure the connection strength after splicing, the length of the positioning threaded steel bar is equal to 1/10 of the height of the prefabricated upper layer reinforced concrete column; positioning the diameter of the deformed steel bar to 1/10 of the length of the deformed steel bar, wherein the thread pitch of the deformed steel bar is 3 mm; the height of the embedded section B is equal to that of the exposed section B; the length of the positioning internal thread sleeve is 25mm more than that of the exposed section B; the internal diameter of the positioning internal thread sleeve is 10mm more than the external diameter of the positioning thread steel bar, and the thread pitch is 3 mm.
Preferably, the round holes are arranged in a staggered mode, the inner diameter of each round hole is 25mm, and the distance between the circle centers of the adjacent round holes is 50 mm.
Further, in order to ensure the connection strength between the splicing round steel tube and the prefabricated upper layer reinforced concrete column and between the sleeving round steel tube and the prefabricated lower layer reinforced concrete column, the embedded section A is welded with the steel bars in the prefabricated upper layer reinforced concrete column; and the sleeved round steel pipe is welded with the steel bar in the prefabricated lower layer reinforced concrete column.
In the technical scheme, the steel tube and the concrete grouting material or the engineering glue are spliced between the reinforced concrete columns, so that the steel tube and the concrete grouting material or the engineering glue interact with each other in a stress process, namely the concrete grouting material or the engineering glue is in a complex stress state under the constraint action of the steel tube on the concrete grouting material or the engineering glue, the strength of the concrete grouting material or the engineering glue is improved, and the plasticity and the toughness are greatly improved. Meanwhile, after the concrete grouting material or the engineering glue is filled in the steel pipe, the buckling of the wall of the steel pipe can be avoided or delayed due to the supporting effect of the concrete grouting material or the engineering glue. The combination of the two materials makes up the respective disadvantages, so that the material performance is fully exerted. The positioning installation can be realized between the inserting round steel pipe and the sleeving round steel pipe in a rapid sleeving way; the connection cooperation between the plurality of positioning threaded steel rods and the plurality of positioning internal thread sleeves further improves the connection strength, and ensures that the positions between the reinforced concrete columns can be quickly aligned, and meanwhile, as the outer sides of the positioning threaded steel rods and the inner sides of the positioning internal thread sleeves are both provided with the thread structures, grouting materials or engineering glue can be tightly filled on the surfaces of the thread structures after grouting materials or engineering glue is filled, so that the connection strength between the positioning threaded steel rods and the positioning internal thread sleeves after splicing can be further enhanced; the setting of round hole can make grout material or engineering glue fill wherein, like this, enable the circular steel tube of pegging graft and cup joint the connection between the circular steel tube more inseparabler after the concatenation, joint strength is higher, can also make grout material or engineering glue be connected with the original muddy dress soil in the prefabricated upper reinforced concrete column to the joint strength of improvement concatenation department that can be further, also can further strengthen the firm degree of pegging graft circular steel tube and prefabricated upper reinforced concrete column connection. In addition, due to the existence of the round holes, in the splicing process, part of grouting materials or engineering glue can overflow the splicing circular steel tubes and reach the splicing surfaces of the prefabricated upper layer reinforced concrete column and the prefabricated lower layer reinforced concrete column, so that the connecting surface between the prefabricated upper layer reinforced concrete column and the prefabricated lower layer reinforced concrete column can be bonded, and the connecting strength between the concrete columns can be further improved. The splicing structure can ensure the rigidity and the bearing capacity of the spliced part of the column, ensure the splicing quality, and avoid the problems of the traditional splicing structure, such as improper connection, inconvenient quality inspection and the like.
The invention also provides a column splicing method suitable for the reinforced concrete fabricated structure, which specifically comprises the following steps;
vertically installing the lower layer splicing body at a preset position, and pouring grouting material or engineering glue in advance in the sleeved round steel pipe and the positioning internal thread sleeve, wherein the filling height of the grouting material or the engineering glue in the sleeved round steel pipe is 4/5 of the length of the grouting material or the engineering glue in the positioning internal thread sleeve is 1/3 of the length of the grouting material or the engineering glue in the positioning internal thread sleeve;
step two: vertically hoisting the upper layer splicing body by using hoisting equipment and inserting the upper layer splicing body into the lower layer splicing body which is completely grouted;
step three: and finishing the splicing process after the grouting material or the engineering adhesive reaches the allowable strength.
The method can conveniently realize the quick splicing of the reinforced concrete columns, and has simple construction process and reliable construction quality.
Drawings
FIG. 1 is a schematic structural view of a prefabricated upper splice of the present invention;
FIG. 2 is a schematic structural view of a prefabricated sub-layer tile according to the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 4 is a sectional view taken along line B-B in fig. 2.
In the figure, 1, the upper splicing, 2, the lower floor splicing body, 3, prefabricated upper reinforced concrete column, 4, the circular steel tube of pegging graft, 5, location screw-thread steel bar, 6, round hole, 7, the section A that buries in, 8, naked section A, 9, the section B that buries in, 10, naked section B, 11, prefabricated lower floor reinforced concrete column, 12, cup joint the circular steel tube, 13, location internal thread sleeve.
Detailed Description
The present invention is further described below.
As shown in fig. 1 to 4, a column splicing structure suitable for a reinforced concrete fabricated structure includes an upper layer splicing body and a lower layer splicing body 1 and 2;
the upper splicing body 1 consists of a prefabricated upper reinforced concrete column 3, an inserted circular steel tube 4 and a plurality of positioning threaded steel rods 5; the pipe body of the inserted circular steel pipe 4 is uniformly provided with a plurality of round holes 6 which are divided into an upper embedded section A7 and a lower exposed section A8, the embedded section A7 is embedded in the center of the lower end part of the prefabricated upper layer reinforced concrete column 3, and the exposed section A8 is exposed outside the prefabricated upper layer reinforced concrete column 3; the positioning threaded steel bars 5 are divided into an upper embedded section B9 and a lower exposed section B10, the embedded sections B9 of the positioning threaded steel bars 5 are respectively embedded around the lower end part of the prefabricated upper layer reinforced concrete column 3, and the exposed sections B10 of the positioning threaded steel bars 5 are exposed outside the prefabricated upper layer reinforced concrete column 3;
the lower splicing body 2 consists of a prefabricated lower reinforced concrete column 11, a sleeved circular steel tube 12 and a plurality of positioning internal thread sleeves 13; the inner diameter of the sleeved round steel tube 12 is slightly larger than the outer diameter of the inserted round steel tube 4, the height of the sleeved round steel tube 12 is not smaller than the height of the exposed section A8, the sleeved round steel tube 12 is embedded in the center of the upper end part of the prefabricated lower-layer reinforced concrete column 11, and the upper end surface of the sleeved round steel tube 12 is flush with the upper end surface of the prefabricated lower-layer reinforced concrete column 11; the positioning internal thread sleeves 13 are arranged in one-to-one correspondence with the positioning threaded steel rods 5, the inner diameter of each positioning internal thread sleeve 13 is slightly larger than the outer diameter of each positioning threaded steel rod 5, and the height of each positioning internal thread sleeve 13 is not smaller than that of the exposed section B10; a plurality of positioning internal thread sleeves 13 are embedded around the upper end part of the prefabricated lower layer reinforced concrete column 11, and the upper end surfaces of the positioning internal thread sleeves 13 are flush with the upper end surface of the prefabricated lower layer reinforced concrete column 11;
the exposed section A8 is inserted into the sleeved round steel pipe 12, the exposed sections B10 of the positioning threaded steel rods 5 are respectively inserted into the positioning internal thread sleeves 13 to realize the fixed splicing between the upper splicing body 1 and the lower splicing body 2, and the gaps between the exposed section A8 and the sleeved round steel pipe 12, the gaps between the exposed section B10 and the positioning internal thread sleeves 13 and the inside of the sleeved round steel pipe 12 are filled with grouting materials or engineering glue.
Preferably, the number of the positioning threaded steel bars 5 and the number of the positioning internal thread sleeves 13 are four, and the positioning threaded steel bars and the positioning internal thread sleeves are respectively arranged close to four corners of the prefabricated upper layer reinforced concrete column 3 and four corners of the prefabricated lower layer reinforced concrete column 11.
In order to ensure the connection strength after splicing, the length of the splicing round steel tube 4 is greater than or equal to 1/5 of the height of the prefabricated upper layer reinforced concrete column 3; the outer diameter of the inserted circular steel tube 4 is 1/3 of the side length of the prefabricated upper layer reinforced concrete column 3; the height of the embedded section A7 is equal to that of the exposed section A8; the length of the sleeved round steel pipe 12 is 50mm more than that of the exposed section A8; the inner diameter of the sleeved round steel pipe 12 is 100mm more than the outer diameter of the inserted round steel pipe 4.
In order to ensure the connection strength after splicing, the length of the positioning threaded steel bar 5 is equal to 1/10 of the height of the prefabricated upper layer reinforced concrete column 3; positioning the diameter of the deformed steel bar 5 to 1/10 of the length of the deformed steel bar, wherein the thread pitch of the deformed steel bar is 3 mm; the height of the embedded section B9 is equal to that of the exposed section B10; the length of the positioning internal thread sleeve 13 is 25mm more than that of the exposed section B10; the inner diameter of the positioning internal thread sleeve 13 is 10mm more than the outer diameter of the positioning threaded steel rod 5, and the thread pitch is 3 mm.
Preferably, the plurality of round holes 6 are arranged in a staggered manner, the inner diameter of each round hole 6 is 25mm, and the distance between the circle centers of the adjacent round holes 6 is 50 mm.
In order to ensure the connection strength between the inserted circular steel tube and the prefabricated upper layer reinforced concrete column and between the sleeved circular steel tube and the prefabricated lower layer reinforced concrete column, the embedded section A7 is welded with the steel bars in the prefabricated upper layer reinforced concrete column 3; the sleeved round steel pipe 12 is welded with the steel bars in the prefabricated lower layer reinforced concrete column 11.
The steel tube and the concrete grouting material or the engineering glue are spliced between the reinforced concrete columns, so that the steel tube and the concrete grouting material or the engineering glue interact with each other in a stress process, namely the concrete grouting material or the engineering glue is in a complex stress state under the constraint action of the steel tube on the concrete grouting material or the engineering glue, the strength of the concrete grouting material or the engineering glue is improved, and the plasticity and the toughness are greatly improved. Meanwhile, after the concrete grouting material or the engineering glue is filled in the steel pipe, the buckling of the wall of the steel pipe can be avoided or delayed due to the supporting effect of the concrete grouting material or the engineering glue. The combination of the two materials makes up the respective disadvantages, so that the material performance is fully exerted. The positioning installation can be realized between the inserting round steel pipe and the sleeving round steel pipe in a rapid sleeving way; the connection cooperation between the plurality of positioning threaded steel bars and the plurality of positioning internal thread sleeves further improves the connection strength and ensures that the positions of the reinforced concrete columns can be quickly aligned; the setting of round hole can make grout material or engineering glue fill wherein, like this, enable the circular steel tube of pegging graft and cup joint the connection between the circular steel tube more inseparabler after the concatenation, joint strength is higher, can also make grout material or engineering glue be connected with the original muddy dress soil in the prefabricated upper reinforced concrete column to the joint strength of improvement concatenation department that can be further, also can further strengthen the firm degree of pegging graft circular steel tube and prefabricated upper reinforced concrete column connection. In addition, due to the existence of the round holes, in the splicing process, part of grouting materials or engineering glue can overflow the splicing circular steel tubes and reach the splicing surfaces of the prefabricated upper layer reinforced concrete column and the prefabricated lower layer reinforced concrete column, so that the connecting surface between the prefabricated upper layer reinforced concrete column and the prefabricated lower layer reinforced concrete column can be bonded, and the connecting strength between the concrete columns can be further improved. The splicing structure can ensure the rigidity and the bearing capacity of the spliced part of the column, ensure the splicing quality, and avoid the problems of the traditional splicing structure, such as improper connection, inconvenient quality inspection and the like.
The invention also provides a column splicing method suitable for the reinforced concrete fabricated structure, which specifically comprises the following steps;
vertically installing the lower layer splicing body 2 at a preset position, and pouring grouting material or engineering glue in advance in the sleeved round steel pipe 12 and the positioning internal thread sleeve 13, wherein the filling height of the grouting material or the engineering glue in the sleeved round steel pipe 12 is 4/5 of the length of the grouting material or the engineering glue, so that part of the grouting material or the engineering glue can enter the embedded section A7 after splicing, and can be connected with the original concrete of the prefabricated upper layer reinforced concrete column, the connection strength of the sleeved round steel pipe 12 and the splicing round steel pipe 4 can be increased, and the connection strength between the splicing round steel pipe 4 and the prefabricated upper layer reinforced concrete column 3 can be further enhanced; in addition, due to the existence of the circular hole 6, in the splicing process, part of grouting material or engineering glue can overflow the splicing circular steel tube 4 and reach the splicing surfaces of the prefabricated upper layer reinforced concrete column 3 and the prefabricated lower layer reinforced concrete column 11, so that the connecting surface between the prefabricated upper layer reinforced concrete column 3 and the prefabricated lower layer reinforced concrete column 11 can be bonded, the connecting strength between the concrete columns can be further improved, and the filling height of the grouting material or the engineering glue in the positioning internal thread sleeve 13 is 1/3 of the length of the grouting material or the engineering glue;
step two: vertically hoisting the upper layer splicing body 1 by using hoisting equipment and inserting the upper layer splicing body into the lower layer splicing body 2 which is completely grouted;
step three: and after the grouting material or the engineering adhesive reaches the allowable strength, completing the splicing process, and further performing the subsequent construction process.
The method can conveniently realize the quick splicing of the reinforced concrete columns, and has simple construction process and reliable construction quality.
Claims (7)
1. A column splicing structure suitable for a reinforced concrete fabricated structure comprises an upper layer splicing body (1) and a lower layer splicing body (2),
the upper splicing body (1) consists of a prefabricated upper reinforced concrete column (3), an inserted circular steel tube (4) and a plurality of positioning threaded steel rods (5); a plurality of round holes (6) are uniformly formed in the pipe body of the splicing round steel pipe (4) and are divided into an upper embedded section A (7) and a lower exposed section A (8), the embedded section A (7) is embedded in the center of the lower end part of the prefabricated upper layer reinforced concrete column (3), and the exposed section A (8) is exposed outside the prefabricated upper layer reinforced concrete column (3); the positioning threaded steel bars (5) are divided into an upper embedded section B (9) and a lower exposed section B (10), the embedded sections B (9) of the positioning threaded steel bars (5) are respectively embedded around the lower end part of the prefabricated upper layer reinforced concrete column (3), and the exposed sections B (10) of the positioning threaded steel bars (5) are exposed outside the prefabricated upper layer reinforced concrete column (3);
the lower splicing body (2) consists of a prefabricated lower reinforced concrete column (11), a sleeved circular steel tube (12) and a plurality of positioning internal thread sleeves (13); the inner diameter of the sleeved round steel tube (12) is slightly larger than the outer diameter of the inserted round steel tube (4), the height of the sleeved round steel tube (12) is not smaller than the height of the exposed section A (8), the sleeved round steel tube (12) is embedded in the center of the upper end part of the prefabricated lower-layer reinforced concrete column (11), and the upper end surface of the sleeved round steel tube (12) is flush with the upper end surface of the prefabricated lower-layer reinforced concrete column (11); the positioning internal thread sleeves (13) and the positioning threaded steel rods (5) are arranged in a one-to-one correspondence manner, the inner diameter of each positioning internal thread sleeve (13) is slightly larger than the outer diameter of each positioning threaded steel rod (5), and the height of each positioning internal thread sleeve (13) is not smaller than that of the exposed section B (10); a plurality of positioning internal thread sleeves (13) are embedded around the upper end part of the prefabricated lower layer reinforced concrete column (11), and the upper end surface of each positioning internal thread sleeve (13) is flush with the upper end surface of the prefabricated lower layer reinforced concrete column (11);
the exposed section A (8) is inserted into the sleeved round steel pipe (12), the exposed sections B (10) of the positioning threaded steel rods (5) are respectively inserted into the positioning internal threaded sleeves (13) to realize fixed splicing between the upper splicing body (1) and the lower splicing body (2), and the exposed section A (8) and the gap between the sleeved round steel pipe (12), the exposed section B (10) and the positioning internal threaded sleeve (13) and the inside of the sleeved round steel pipe (12) are filled with grouting material or engineering glue.
2. Column splicing structure, suitable for reinforced concrete fabricated structures, according to claim 1, characterized in that the number of said positioning threaded steel bars (5) and positioning threaded sleeves (13) is four and arranged in four corners close to the prefabricated upper layer reinforced concrete column (3) and the prefabricated lower layer reinforced concrete column (11), respectively.
3. The column splicing structure suitable for reinforced concrete fabricated structures according to claim 1 or 2, wherein the length of the spliced circular steel tube (4) is greater than or equal to 1/5 of the height of the prefabricated upper reinforced concrete column (3); the outer diameter of the inserted circular steel tube (4) is 1/3 with the side length of the prefabricated upper layer reinforced concrete column (3); the height of the embedded section A (7) is equal to that of the exposed section A (8); the length of the sleeved round steel pipe (12) is 50mm more than that of the exposed section A (8); the inner diameter of the sleeved round steel pipe (12) is 100mm more than the outer diameter of the inserted round steel pipe (4).
4. A column splicing structure suitable for reinforced concrete fabricated structures according to claim 3, wherein the length of the positioning deformed steel bars (5) is equal to 1/10 of the height of the prefabricated upper layer reinforced concrete column (3); positioning the diameter of the threaded steel rod (5) to 1/10 of the length of the threaded steel rod, wherein the thread pitch of the threaded steel rod is 3 mm; the height of the embedded section B (9) is equal to that of the exposed section B (10); the length of the positioning internal thread sleeve (13) is 25mm more than that of the exposed section B (10); the inner diameter of the positioning internal thread sleeve (13) is 10mm more than the outer diameter of the positioning thread steel bar (5), and the thread pitch is 3 mm.
5. The column splicing structure suitable for reinforced concrete fabricated structures as claimed in claim 4, wherein the plurality of circular holes (6) are arranged in a staggered manner, the inner diameter of the circular holes (6) is 25mm, and the distance between the centers of circles of adjacent circular holes (6) is 50 mm.
6. The column splicing structure suitable for reinforced concrete fabricated structures according to claim 4, wherein the embedded section A (7) is welded with the steel bars in the prefabricated upper layer reinforced concrete column (3); the sleeved round steel pipe (12) is welded with the steel bars in the prefabricated lower layer reinforced concrete column (11).
7. A column splicing method suitable for a reinforced concrete fabricated structure is characterized by comprising the following steps;
vertically installing a lower layer splicing body (2) at a preset position, and pouring grouting material or engineering glue in advance in a sleeved round steel pipe (12) and a positioning internal thread sleeve (13), wherein the filling height of the grouting material or the engineering glue in the sleeved round steel pipe (12) is 4/5 of the length of the grouting material or the engineering glue in the positioning internal thread sleeve (13) is 1/3 of the length of the grouting material or the engineering glue in the positioning internal thread sleeve (13);
step two: vertically hoisting the upper layer splicing body (1) by using hoisting equipment and inserting the upper layer splicing body into the lower layer splicing body (2) which is completely grouted;
step three: and finishing the splicing process after the grouting material or the engineering adhesive reaches the allowable strength.
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| CN202010058796.1A CN111119410A (en) | 2020-01-19 | 2020-01-19 | Column splicing structure and method suitable for reinforced concrete assembled structure |
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| CN111456256A (en) * | 2020-05-12 | 2020-07-28 | 黑龙江宇辉新型建筑材料有限公司 | Reinforced concrete prefabricated column type steel connecting joint and connecting method |
| CN112360062A (en) * | 2020-11-27 | 2021-02-12 | 任现妹 | Stand module of prefabricated building |
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| CN113719022A (en) * | 2021-09-23 | 2021-11-30 | 中印恒盛(北京)贸易有限公司 | Splicing type building module applied to underwater building |
| CN114059718A (en) * | 2021-10-18 | 2022-02-18 | 嘉博联合设计股份有限公司 | Prefabricated assembled column and manufacturing method thereof |
| CN114319980A (en) * | 2021-11-23 | 2022-04-12 | 中国能源建设集团安徽省电力设计院有限公司 | Steel pipe concrete and steel pipe conversion node suitable for large-scale power transmission tower |
| CN114562071A (en) * | 2022-03-17 | 2022-05-31 | 华侨大学 | Grouting joint bar compaction grouting sleeve precast concrete column and construction method |
| CN116145895A (en) * | 2021-12-29 | 2023-05-23 | 海南大学 | Prefabricated assembled concrete column |
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| CN114059718A (en) * | 2021-10-18 | 2022-02-18 | 嘉博联合设计股份有限公司 | Prefabricated assembled column and manufacturing method thereof |
| CN114319980A (en) * | 2021-11-23 | 2022-04-12 | 中国能源建设集团安徽省电力设计院有限公司 | Steel pipe concrete and steel pipe conversion node suitable for large-scale power transmission tower |
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