CN111255124A

CN111255124A - Superposed shear wall and bar inserting method thereof

Info

Publication number: CN111255124A
Application number: CN202010170363.5A
Authority: CN
Inventors: 唐丽娜; 周练; 章一萍
Original assignee: Sichuan Architectural Design And Research Institute Co Ltd
Current assignee: Sichuan Architectural Design And Research Institute Co Ltd
Priority date: 2020-03-12
Filing date: 2020-03-12
Publication date: 2020-06-09

Abstract

The invention relates to the technical field of constructional engineering, in particular to a superposed shear wall and a bar inserting method thereof; the adopted technical scheme is as follows: the utility model provides a superimposed shear wall, includes two acanthus leaf and a plurality of dowel, the acanthus leaf is fixed with the connecting piece, connecting piece one end links to each other with the acanthus leaf, the connecting piece other end is located the cast-in-place space that two acanthus leaf enclose, the one end that the connecting piece is located cast-in-place space is equipped with the through-hole, the through-hole is used for inserting and establishes the dowel, the dowel is equipped with the locating part, the locating part is used for preventing the dowel from dropping from the connecting piece. When the dowel bars are installed, the positioning of the dowel bars can be realized only by penetrating the lower ends of the dowel bars through the through holes, the installation is simple, and the construction speed is high; through the position of adjusting the setting element, the location is accurate, and the position is stable, does not need the hand reinforcing bar of manual work, can reduce intensity of labour, raise the efficiency and practice thrift the cost of labor.

Description

Superposed shear wall and bar inserting method thereof

Technical Field

The invention relates to the technical field of constructional engineering, in particular to a superposed shear wall and a bar inserting method thereof.

Background

At present, a fabricated building concrete structure system mainly comprises a fabricated frame structure system and a fabricated shear wall structure system, and in a high-rise building engineering project, the fabricated shear wall structure system is mainly used. Notification of development of <2019 Whole province push assembly type building development work key points > of Sichuan province houses and urban and rural construction halls provides that the assembly rate of 5 trial urban government investment projects of Chengdu, Guang' an, Leshan, Meishan and Xichang is improved to more than 50%; the 'notice of completion of work related to the prefabricated building of the house project invested by the city government of the urban and rural construction bureau (completion of the establishment of the city, No. [2019] 202) indicates that the' assembly rate of the government invested project is not lower than 50%, and the trial demonstration of the prefabricated building on the level A (the assembly rate is 60-75%) and above is carried out.

According to the 'assembled building evaluation standard' (GB/T51129-2017), the requirement that the assembly rate is not lower than 50% is met, and a certain number of assembled vertical stress members are required to be arranged besides laminated floors, partition walls and the like. And the cross reinforcing steel bars at the joints of the superposed beams and columns are more, and the contribution to the assembly rate is smaller, so that the fabricated shear wall is the first choice for improving the assembly rate. The prefabricated solid shear wall is not beneficial to the development of the fabricated building due to the disadvantages of great weight, ribs on four sides, complex connection and the like; the superposed shear wall has the characteristics of light prefabricated parts, no reserved 'beard' ribs on four sides, vertical connection, inserted bar connection, no sleeve grouting and the like, greatly reduces the requirement of hoisting equipment in the production-transportation-construction process, is simple and convenient to produce, store and transport, has no disturbance deformation of the beard ribs, has a simple connection structure, avoids the defects of difficult grouting and positioning of the steel bar sleeve, high construction technical requirement, expensive materials and the like, powerfully ensures the engineering quality, reduces the engineering construction cost, and has obvious economic advantages on high-assembly-rate building technology. However, the vertical connection of the existing superposed shear wall is the connection of the dowel bars, the specification requires that the distance from the prefabricated part is 15mm, the dowel bars are not well positioned, and the dowel bars and the truss steel bars need to be bound to avoid falling.

Disclosure of Invention

Aiming at the technical problem that the prior laminated shear wall is inconvenient to position the dowel bars, the invention provides the laminated shear wall and the dowel bar method thereof, so that the dowel bars are convenient to position, the installation and construction efficiency of the laminated shear wall can be improved, and the building stability can be improved.

The invention is realized by the following technical scheme:

the utility model provides a superimposed shear wall, includes two acanthus leaf and a plurality of dowel, the acanthus leaf is fixed with the connecting piece, connecting piece one end links to each other with the acanthus leaf, the connecting piece other end is located the cast-in-place space that two acanthus leaf enclose, the one end that the connecting piece is located cast-in-place space is equipped with the through-hole, the through-hole is used for inserting and establishes the dowel, the dowel is equipped with the locating part, the locating part is used for preventing the dowel from dropping from the connecting piece.

When the dowel bars are installed, the dowel bars can be positioned only by penetrating the lower ends of the dowel bars through the through holes, the working procedures of binding and fixing the dowel bars and the truss in the existing construction scheme are reduced, the installation is simple, and the construction speed is high. Through the position of adjusting the setting element, alright satisfy on the building code to dowel length, dowel and interior outer leaf plate apart from the regulation of requirement, fix a position accurately. The joint bars are positioned through the connecting pieces, the positions are stable, the joint bars cannot displace when concrete is cast in place, manual steel bar holding is not needed, the labor intensity can be reduced, the efficiency is improved, and the labor cost is saved.

As a specific implementation manner of the limiting part, the limiting part is a connecting rib, and the connecting part connects the joint bars into a joint bar net, so that not only can the positioning of the joint bars be realized, but also the structural strength of the superposed shear wall can be improved.

Furthermore, the lower end of the dowel bar is fixed with a short bar, so that the dowel bar and the blade plate keep a set distance, and the anchoring effect of the dowel bar is enhanced.

As a specific implementation mode of the connecting piece, the connecting piece comprises a connecting plate, a first clamping portion and a second clamping portion are fixed on one surface of the connecting plate, and the distance between the first clamping portion and the second clamping portion is matched with the thickness of the end portion of the blade. When the connecting piece is used, the connecting piece is directly clamped at the end part of the blade plate, the installation is simple and convenient, and the construction efficiency is ensured.

Preferably, two connecting pieces are fixed on the blade plate to ensure the stability of the dowel.

Preferably, the distance between the two connectors is greater than one third of the length of the blade to further ensure the stability of the dowel.

Preferably, the distance between the circle center of the through hole and the side wall of the blade plate is 10-20 mm so as to meet the regulation of building specifications.

As a specific embodiment of the connection of the blades, the two blades are connected through a truss.

The invention also provides a method for inserting the dowel bars of the superposed shear wall, which is used for inserting the dowel bars of the superposed shear wall and comprises the following steps: connecting each inserted bar through a connector to form an inserted bar reinforcing mesh; fixing the two blade plates at preset positions, and fixing connecting pieces on the blade plates; and the lower end of the dowel bar penetrates through the through hole of the connecting piece to complete the dowel bar operation of the superposed shear wall.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1. when the dowel bars are installed, the lower ends of the dowel bars only need to penetrate through the through holes, positioning of the dowel bars can be achieved, the process of binding and fixing the dowel bars and the truss in the existing construction scheme is reduced, installation is simple, and construction speed is high.

2. Through the position of adjusting the setting element, alright satisfy on the building code to dowel length, dowel and interior outer leaf plate apart from the regulation of requirement, fix a position accurately.

3. The joint bars are positioned through the connecting pieces, the positions are stable, the joint bars cannot displace when concrete is cast in place, manual steel bar holding is not needed, the labor intensity can be reduced, the efficiency is improved, and the labor cost is saved.

4. The short ribs are fixed at the lower ends of the joint bars, so that the anchoring effect of the joint bars is enhanced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of the connection of the connector of the present invention to a blade;

FIG. 2 is a schematic view of the web of the present invention;

FIG. 3 is a schematic view of the positioning state of the joint bar according to the present invention;

FIG. 4 is a schematic view of the plane A-A of FIG. 3;

fig. 5 is a schematic view of the connector structure of the present invention.

Reference numbers and corresponding part names in the drawings:

1-leaf plate, 10-floor slab, 2-connecting piece, 20-through hole, 21-connecting plate, 22-first clamping part, 23-second clamping part, 3-cast-in-place space, 4-dowel bar, 41-short bar, 5-connecting bar and 6-truss.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Examples

A kind of superimposed shear wall, including two leaf plates 1 and several dowel bars 4, namely include inner leaf plate and outer leaf plate; the two blades 1 are connected by a truss 6 to form a concrete cast-in-place space 3. The louver board 1 is fixed with connecting

piece

2, 2 one end of connecting piece are connected with the louver board 1, through modes such as anchor, joint, spiro union and the like and louver board 1 fixed connection. The other end of the connecting piece 2 is positioned in a cast-in-place space 3 surrounded by the two blades 1, a through hole 20 is formed in one end of the connecting piece 2 positioned in the cast-in-place space 3, and the through hole 20 is used for inserting the inserting rib 4. Simultaneously the dowel 4 is equipped with locating part 5, locating part 5 is used for preventing dowel 4 from dropping from connecting piece 2, and it can be understood that, locating part 5 can be the arch, the fixed block etc. of setting in the middle part of dowel 4.

As a specific implementation manner of the limiting member 5, the limiting member 5 is a connecting rib, in this embodiment, the connecting member 5 is transversely disposed and is fixedly connected to the middle portion of the joint bar 4, that is, the connecting member 5 connects the joint bars 4 into a joint bar net, which not only can realize the positioning of the joint bar 4, but also can improve the structural strength of the stacked shear wall.

Furthermore, the short ribs 41 are fixed at the lower ends of the inserting ribs 4, so that the lower ends of the inserting ribs 4 keep a set distance from the blade 1, and the anchoring effect of the inserting ribs 4 is enhanced. It should be noted that the short ribs 41 are fixed to the dowels 4 that are not inserted into the through holes 20, so that the dowels 4 can smoothly pass through the through holes 20. Preferably, the short rib 41 and the stopper 5 are separately provided on both sides opposite to the dowel 4, to further improve the anchoring effect of the dowel 4. The short bars 41 may be arranged perpendicular to the joint bars 4, or may be a plurality of layers of steel bars parallel to the joint bars 4, such as two layers.

As a specific embodiment of the connector 2, the connector 2 includes a connecting plate 21, and a first locking portion 22 and a second locking portion 23 are fixed on one side of the connecting plate 21, and for the convenience of manufacturing the connector 2, the first locking portion 22 and the second locking portion 23 are usually made of two plates. The distance between the first clamping part 22 and the second clamping part 23 is matched with the thickness of the end part of the blade 1. When the connecting piece is used, the connecting piece 2 is directly clamped at the end part of the blade plate 1, the installation is simple and convenient, and the construction efficiency is ensured.

Preferably, two connectors 2 are fixed to the blade 1 to ensure the stability of the dowel 4. The distance between the two connectors 5 is more than one third of the length of the blade 1 to further ensure the stability of the dowel 4. The distance from the circle center of the through hole 20 to the side wall of the blade plate 1 is 10-20 mm, so that the upper part of the dowel bar 4 is kept at a set distance from the blade plate, and the requirement of building specifications is met.

The method for inserting the ribs into the superposed shear wall comprises the following steps: connecting each dowel bar 4 through a connecting bar, fixing the two blade plates 1 at preset positions, and connecting the two blade plates 1 through a truss 6 to form a pouring space 3; and fixing the connecting piece 2 on the blade plate 1, enabling the through hole 20 to be positioned in the pouring space 3, and enabling one end of the dowel bar 4 to penetrate through the through hole 20 to complete the dowel bar operation of the superposed shear wall. The construction of the superposed shear wall can be finished by pouring concrete in the cast-in-place space 3, the construction efficiency is high,

the above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a superimposed shear wall, includes two acanthus leaf (1) and a plurality of dowel (4), its characterized in that, the acanthus leaf is fixed with connecting piece (2), connecting piece (2) one end links to each other with acanthus leaf (1), connecting piece (2) other end is located cast-in-place space (3) that two acanthus leaf (1) enclose, the one end that connecting piece (2) are located cast-in-place space (3) is equipped with through-hole (20), through-hole (20) are used for inserting and establish dowel (4), dowel (4) are equipped with locating part (5), locating part (5) are used for preventing dowel (4) from dropping from connecting piece (2).

2. A laminated shear wall according to claim 1, wherein the stop members (5) are tie bars, and the connecting members (5) connect the respective tie bars (4) into a web of tie bars.

3. A laminated shear wall according to claim 2, wherein the lower ends of the tendons (4) are fixed with short tendons (41).

4. The laminated shear wall of claim 1, wherein the connecting member (2) comprises a connecting plate (21), a first clamping portion (22) and a second clamping portion (23) are fixed on one surface of the connecting plate (21), and the distance between the first clamping portion (22) and the second clamping portion (23) is matched with the thickness of the end portion of the louver (1).

5. A laminated shear wall according to claim 1, wherein two connectors (2) are fixed to the leaf (1).

6. A laminated shear wall according to claim 5, wherein the distance between two connecting members (2) is greater than one third of the length of the leaf (1).

7. The laminated shear wall of claim 6, wherein the distance from the center of the through hole (21) to the side wall of the blade (1) is 10-20 mm.

8. A laminated shear wall according to any one of claims 1 to 7, wherein the two leaf plates (1) are connected by a truss (6).

9. A method for splicing the ribs of a shear wall is characterized by comprising the following steps:

connecting each steel bar (4) through a connector (5) to form a steel bar mesh;

after the two blade plates (1) are fixed at preset positions, fixing a connecting piece (2) on the blade plates (1), wherein the connecting piece (2) is provided with a through hole (20);

and the lower end of the dowel (4) passes through the through hole (20) to complete the dowel operation of the superposed shear wall.

10. A method of splicing shear walls according to claim 9, wherein the lower ends of the said splicing bars (4) are fixed with short bars (41).