CN110725474A - Self-standing semi-dry prefabricated column connection and construction method thereof - Google Patents
Self-standing semi-dry prefabricated column connection and construction method thereof Download PDFInfo
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- CN110725474A CN110725474A CN201910957187.7A CN201910957187A CN110725474A CN 110725474 A CN110725474 A CN 110725474A CN 201910957187 A CN201910957187 A CN 201910957187A CN 110725474 A CN110725474 A CN 110725474A
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- hole
- column
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- prefabricated column
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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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- Structural Engineering (AREA)
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- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a self-standing semi-dry prefabricated column connection and a construction method thereof. The construction method comprises the following steps: a. screwing the end of the first longitudinal bar into the internal thread hole; b. placing the shear resisting mechanism into the first preformed hole and the second preformed hole; c. penetrating the second longitudinal rib through the bottom plate hole and fixing the second longitudinal rib by using a bolt; d. and filling mortar through the first reserved hole and the second reserved hole. The invention can realize that the anti-seismic performance of the prefabricated column connecting node is basically equal to that of a cast-in-place column, can continue to use a cast-in-place column design method and is convenient for engineering design.
Description
Technical Field
The invention relates to prefabricated reinforced concrete member connection, in particular to self-supporting semi-dry prefabricated column connection and a construction method thereof.
Background
With the transformation and upgrading of the building industry, fabricated buildings are more and more concerned by the engineering field. The fabricated concrete frame structure is widely applied to buildings such as various residences, office buildings and the like as an industrialized structure form. For the fabricated concrete frame structure, the connection performance between the prefabricated columns plays an important role in the bearing capacity of the whole structure.
From the aspect of construction methods, the connection between prefabricated columns can be divided into 'wet connection' and 'dry connection'. The prefabricated columns are fixed through lateral supports, and then the columns are connected through pouring of mortar at the connecting parts, so that a large amount of on-site wet operation is needed, and the superiority of the fabricated building is difficult to be played efficiently. The 'dry connection' usually adopts a mechanical connection mode to connect prefabricated columns, the mode usually does not need lateral support and has efficient construction performance, but the connection performance of the mode is usually 'non-equivalent cast-in-place' and has self-set performance, and a corresponding design method is not mature enough.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention aims to provide a self-standing semi-dry prefabricated column connection which can be assembled efficiently and has a strong shear resistance at a connection interface, and the invention also aims to provide a construction method for the self-standing semi-dry prefabricated column connection which has the advantages of both 'wet connection' and 'dry connection'.
The technical scheme is as follows: the invention relates to a self-standing semi-dry prefabricated column connection, which comprises an upper prefabricated column and a lower prefabricated column, wherein a first preformed hole is formed in the lower end of the upper prefabricated column, a second preformed hole is formed in the upper end of the lower prefabricated column, the first preformed hole is aligned with the second preformed hole, a surrounded area is used for placing a shear-resistant mechanism and pouring mortar, a connecting box and a first longitudinal rib are arranged in the upper prefabricated column, a second longitudinal rib is arranged in the lower prefabricated column, and a top plate and a bottom plate of the connecting box are respectively connected with the first longitudinal rib and the second longitudinal rib.
The bottom surface of the connecting box and the lower end surface of the upper prefabricated column are on the same plane. The bottom plate of the connecting box is provided with a bottom plate hole. The roof and the first muscle thread fixed connection of indulging of connecting box, the second is indulged the muscle and is passed bottom plate hole and pass through bolt and bottom plate fixed connection. The cross section of the first preformed hole and the second preformed hole is circular or rectangular. The shearing resistant mechanism is a steel reinforcement cage or H-shaped steel. The number of the connecting boxes is more than four, the connecting boxes are respectively arranged at four corners of the upper prefabricated column, and the number of the shearing-resistant mechanisms is one, and the connecting boxes are preferably arranged at the central positions of the upper prefabricated column and the lower prefabricated column. And a second reserved hole channel is arranged on the side edge of the lower prefabricated column. And a first reserved hole channel is arranged on the side edge of the upper prefabricated column.
The construction method for connecting the self-standing semi-dry precast columns comprises the following steps:
a. screwing the end head of the first longitudinal rib of the upper prefabricated column into the internal thread hole on the top plate of the connecting box, so that the first longitudinal rib is fixedly connected with the connecting box;
b. placing the shearing resistant mechanism into a first preformed hole of the upper prefabricated column and a second preformed hole of the lower prefabricated column;
C. penetrating a second longitudinal rib of the lower prefabricated column through a bottom plate hole of the connecting box and fixing the second longitudinal rib by using a bolt;
d. and filling mortar through the first reserved hole and the second reserved hole.
Has the advantages that: compared with the prior art, the invention has the following remarkable characteristics:
1. the anti-seismic performance of the prefabricated column connecting node can be basically equal to that of a cast-in-place column, the design can be carried out by using the existing cast-in-place column design method, and the engineering design is facilitated;
2. bending resistance and shearing resistance are actively separated, the bending resistance is connected through bolts on the periphery of the section of the column, and the shearing resistance is realized through the concrete shearing resistance key with the steel reinforcement cage after pouring, so that the use is more convenient;
3. the first longitudinal rib of the upper prefabricated column and the second longitudinal rib of the lower prefabricated column are connected through the connecting box and the nut, so that the construction efficiency is high, and the construction efficiency of the fabricated building can be fully exerted;
4. the mechanical connection of the upper prefabricated column and the lower prefabricated column can immediately bear load after the connection is finished, lateral supporting is not needed, self-supporting performance is realized in a construction period, the use of temporary support in a construction site is reduced, and the site construction cost is further reduced;
5. the node connection interface is provided with a shearing mechanism, the shearing resistance of the node connection is stronger than that of the traditional semi-dry method connection node, the post grouting process has no influence on the construction process, the construction efficiency of equivalent dry connection is realized, and the overall performance of the column connection is more excellent.
Drawings
FIG. 1 is an assembled schematic view of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram showing the separation of the embodiment 1 of the present invention before assembly;
FIG. 3 is an assembly view of the junction box 12 according to embodiment 1 of the present invention;
FIG. 4 is an assembled schematic view of embodiment 2 of the present invention;
FIG. 5 is a schematic diagram showing the separation of the embodiment 2 of the present invention before assembly;
FIG. 6 is an assembled schematic view of embodiment 3 of the present invention;
FIG. 7 is a schematic illustration of the separation of the embodiment 3 of the present invention before assembly;
FIG. 8 is a schematic illustration of the separation of the embodiment 4 of the present invention before assembly.
Detailed Description
Example 1
As shown in figures 1-3, the connection of the self-standing semi-dry prefabricated column comprises an upper prefabricated column 1, a lower prefabricated column 2 and a reinforcement cage 31, wherein a circular first preformed hole 11 and a connecting box 12 are distributed at the lower end of the upper prefabricated column 1, and the end of a first longitudinal rib 13 of the upper prefabricated column 1 is provided with an extrusion thread and screwed into an internal thread hole 121 in the top plate of the connecting box 12. The bottom surface of the connecting box 12 coincides with the lower end surface of the upper prefabricated column 1, and a bottom plate hole 122 is formed in the bottom plate of the connecting box 12. The upper end of the lower prefabricated pillar 2 includes a second prepared hole 21 and a second longitudinal rib 22 having a thread protruding from the outer surface of the upper end. The top thread section of the second longitudinal rib 22 of the lower prefabricated column 2 is matched with the bottom plate hole 122 of the connecting box 12 of the upper prefabricated column 1. The second longitudinal rib 22 thread section of the lower prefabricated column 2 penetrates through the bottom plate hole 122 of the connecting box 12 and is connected with the connecting box 12 of the upper prefabricated column 1 through a bolt. The quantity of steel reinforcement cage 31 and connecting box 12 is 1 respectively and 4, and connecting box 12 is in the four corners department of last prefabricated post 1, and steel reinforcement cage 31 is in the central position of last prefabricated post 1, lower prefabricated post 2.
The specific construction method comprises the following steps:
(a) screwing the end of the first longitudinal rib 13 of the upper prefabricated column 1 into the internal thread hole 121 on the top plate of the connecting box 12, so that the first longitudinal rib 13 is fixedly connected with the connecting box 12;
(b) placing a reinforcement cage 31 into the first preformed hole 11 of the upper prefabricated column 1 and the second preformed hole 21 of the lower prefabricated column 2;
(c) the second longitudinal rib 22 of the lower prefabricated column 2 penetrates through the bottom plate hole 122 of the connecting box 12 and is fixed by bolts;
(d) the first preformed hole 11 is filled with mortar through the second preformed hole 211 of the lower prefabricated column 2.
Example 2
Referring to fig. 4 to 5, this embodiment is the same as the rest of embodiment 1, except that a first preformed hole 111 is formed on the side of the upper preformed column 1.
The specific construction method comprises the following steps:
(a) screwing the end of the first longitudinal rib 13 of the upper prefabricated column 1 into the internal thread hole 121 on the top plate of the connecting box 12, so that the first longitudinal rib 13 is fixedly connected with the connecting box 12;
(b) placing the reinforcement cage 31 into the second preformed hole 21 of the lower prefabricated column 2, and pouring concrete into the second preformed hole 21 of the lower prefabricated column 2 along the second preformed hole 211;
(c) the second longitudinal rib 22 of the lower prefabricated column 2 penetrates through the bottom plate hole 122 of the connecting box 12 and is fixed by bolts;
(d) mortar is filled into the first preformed hole 11 of the prefabricated column 1 upward through the first preformed hole 111.
Example 3
Referring to fig. 6 to 7, the present embodiment is the same as the rest of embodiment 1, except that the reinforcement cage 31 is replaced with an H-shaped steel 32.
Example 4
As shown in fig. 8, this embodiment is the same as the rest of embodiment 3, except that the first prepared holes 11 and the second prepared holes 21, which are circular, are replaced with rectangular prepared holes, respectively.
Claims (10)
1. A prefabricated post of self-reliance semidry process is connected, includes prefabricated post (1) and prefabricated post (2) down, its characterized in that: go up the lower extreme of prefabricated post (1) and set up first preformed hole (11), the upper end of prefabricated post (2) sets up second preformed hole (21) down, first preformed hole (11) and second preformed hole (21) are relative well, enclose the region that closes and form and be used for placing shear mechanism (3) and pouring mortar, it sets up splice box (12) and first muscle (13) of indulging to go up prefabricated post (1), it indulges muscle (22) to set up the second in prefabricated post (2) down, the roof and the bottom plate of splice box (12) link to each other with first muscle (13), second indulge muscle (22) respectively.
2. A free-standing semi-dry precast column connection according to claim 1, wherein: the bottom surface of the connecting box (12) and the lower end surface of the upper prefabricated column (1) are on the same plane.
3. A self-standing semi-dry precast column joint according to claim 1 or 2, wherein: and a bottom plate hole (122) is formed in the bottom plate of the connecting box (12).
4. A self-standing semi-dry precast column connection according to claim 3, wherein: the roof and the first muscle (13) screw thread fixed connection of indulging of connecting box (12), muscle (22) are indulged in the second passes through bottom plate hole (122) and passes through bolt and bottom plate fixed connection.
5. A free-standing semi-dry precast column connection according to claim 1, wherein: the cross sections of the first preformed hole (11) and the second preformed hole (21) are circular or rectangular.
6. A free-standing semi-dry precast column connection according to claim 1, wherein: the shear mechanism (3) is a reinforcement cage (31) or H-shaped steel (32).
7. A free-standing semi-dry precast column connection according to claim 1, wherein: the number of the connecting boxes (12) is more than four.
8. A free-standing semi-dry precast column connection according to claim 1, wherein: and a first reserved hole channel (111) is arranged on the side edge of the upper prefabricated column (1).
9. A free-standing semi-dry precast column connection according to claim 1, wherein: and a second reserved hole channel (211) is arranged on the side edge of the lower prefabricated column (2).
10. A construction method for connecting self-supporting semi-dry precast columns is characterized by comprising the following steps:
(a) screwing the end of a first longitudinal rib (13) of the upper prefabricated column (1) into an internal threaded hole (121) on the top plate of the connecting box (12), so that the first longitudinal rib (13) is fixedly connected with the connecting box (12);
(b) placing the shear mechanism (3) into a first preformed hole (11) of the upper prefabricated column (1) and a second preformed hole (21) of the lower prefabricated column (2);
(c) a second longitudinal rib (22) of the lower prefabricated column (2) penetrates through a bottom plate hole (122) of the connecting box (12) and is fixed by a bolt;
(d) mortar is filled in the first reserved hole channel (111) and the second reserved hole channel (211).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910957187.7A CN110725474A (en) | 2019-10-10 | 2019-10-10 | Self-standing semi-dry prefabricated column connection and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910957187.7A CN110725474A (en) | 2019-10-10 | 2019-10-10 | Self-standing semi-dry prefabricated column connection and construction method thereof |
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| CN110725474A true CN110725474A (en) | 2020-01-24 |
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| CN201910957187.7A Pending CN110725474A (en) | 2019-10-10 | 2019-10-10 | Self-standing semi-dry prefabricated column connection and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236536A (en) * | 2020-02-25 | 2020-06-05 | 东南大学 | Self-supporting prefabricated column hybrid connection and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU732472A1 (en) * | 1977-11-14 | 1980-05-05 | Научно-Исследовательский Институт Бетона И Железобетона Госстроя Ссср | Prefabricated column |
| CN203613719U (en) * | 2013-08-27 | 2014-05-28 | 陕西建科兴业钢结构有限公司 | Prefabricated hollow steel concrete column and splicing structure thereof |
| CN104695626A (en) * | 2015-03-11 | 2015-06-10 | 济南轨道交通集团有限公司 | Separated type prefabricated reinforced concrete cow-leg pillar and construction method thereof |
| CN107288217A (en) * | 2017-07-21 | 2017-10-24 | 长沙远大住宅工业（江苏）有限公司 | Prefabricated post attachment structure |
| CN207032466U (en) * | 2017-05-08 | 2018-02-23 | 姚攀峰 | A kind of superposed type prefabricated reinforced concrete structure system |
-
2019
- 2019-10-10 CN CN201910957187.7A patent/CN110725474A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU732472A1 (en) * | 1977-11-14 | 1980-05-05 | Научно-Исследовательский Институт Бетона И Железобетона Госстроя Ссср | Prefabricated column |
| CN203613719U (en) * | 2013-08-27 | 2014-05-28 | 陕西建科兴业钢结构有限公司 | Prefabricated hollow steel concrete column and splicing structure thereof |
| CN104695626A (en) * | 2015-03-11 | 2015-06-10 | 济南轨道交通集团有限公司 | Separated type prefabricated reinforced concrete cow-leg pillar and construction method thereof |
| CN207032466U (en) * | 2017-05-08 | 2018-02-23 | 姚攀峰 | A kind of superposed type prefabricated reinforced concrete structure system |
| CN107288217A (en) * | 2017-07-21 | 2017-10-24 | 长沙远大住宅工业（江苏）有限公司 | Prefabricated post attachment structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236536A (en) * | 2020-02-25 | 2020-06-05 | 东南大学 | Self-supporting prefabricated column hybrid connection and construction method thereof |
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Application publication date: 20200124 |