CN214835039U

CN214835039U - Beam structure changed from shear wall

Info

Publication number: CN214835039U
Application number: CN202121245549.9U
Authority: CN
Inventors: 项明亮; 葛成龙; 李健; 胡富强; 杨肖
Original assignee: Beijing Urban Construction Sixth Group Co Ltd
Current assignee: Beijing Urban Construction Sixth Group Co Ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-11-23
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a beam structure who changes into by shear force wall belongs to engineering construction technical field. The utility model discloses a beam structure by shear force wall change, including former beam structure, new floor and bar planting structure, the setting of staggering of new floor end position and former beam structure guarantees that the construction joint link up from top to bottom, and is provided with the bar planting structure in the new floor, and the bar planting degree of depth more than or equal to 20d of bar planting structure in new floor. The utility model discloses a demolish the position at former beam structure and carry on new floor and carry out the bar planting and consolidate, can carry out the bearing capacity of the shear force wall of plain beam structure greatly, satisfy the atress requirement and the bar planting requirement of leading to car application scenario.

Description

Beam structure changed from shear wall

Technical Field

The utility model relates to an engineering construction technical field especially relates to a beam structure who is changed by shear force wall.

Background

In recent years, high-rise buildings in China are rapidly developed, building scale and building height are continuously increased, foundation scale is also continuously enlarged, in order to modify projects, sometimes a swimming pool needs to be changed into a parking lot, an original swimming pool building structure cannot meet the traffic demand of a parking lot, and under the situation, effective measures are urgently needed to solve the problem that an original shear wall in the swimming pool structure cannot meet the traffic demand and the steel bar planting demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a beam structure who is changed into by the shear force wall, this structure can effectively expand beam structure, satisfies logical car and planting the muscle requirement.

In order to realize the purpose, the following technical scheme is provided:

the utility model provides a beam structure who changes into by shear force wall, including former beam structure, new floor and bar planting structure, new floor end position with former beam structure staggers the setting, guarantees that the non-upper and lower link up of construction joint, just be provided with the bar planting structure in the new floor, the bar planting structure is in bar planting degree of depth more than or equal to 20d in the new floor.

Furthermore, the end position of the new floor slab is staggered by 80mm from the original beam structure.

Further, the embedded bar depth of the embedded bar structure in the new floor slab is 23 d.

Furthermore, the new floor slab and the original floor slab of the original beam structure are arranged at the same horizontal height and fixed with the original beam structure through reinforcing steel bars.

Furthermore, the bar planting structure comprises a top bar, and the top bar is planted into the original beam structure from top to bottom.

Furthermore, the bar planting structure also comprises a thickening raft structure for the floor slab edge.

Furthermore, bodiness raft structure includes raft, two-way reinforcing bar and short reinforcing bar, two-way reinforcing bar is pour in the top layer of raft, short reinforcing bar from the raft up end implant in the raft.

Furthermore, before the new floor slab and the steel bar planting structure are installed, the surface layer of the installation position of the original beam structure is roughened, and the new floor slab and the steel bar planting structure are installed after the roughened surface is exposed.

And further, after the bar planting structure is implanted, coating interface glue on the roughened surface of the original beam structure.

Further, a concrete layer is poured outside the interface glue.

Compared with the prior art, the utility model provides a beam structure by shear force wall change, its construction method is: after the shear wall of the original beam structure is removed, a new floor slab is carried at the floor slab of the original beam structure, and the new floor slab is subjected to bar planting, wherein the bar planting depth is 23 d; the end position of the new floor slab is staggered by 80mm from the original beam structure slab so as to ensure that the construction joint is not communicated up and down and prevent later-stage concrete cracking; and brushing interface glue on the rough surface of the original beam structure, and pouring concrete for reinforcing and sealing. The utility model discloses a beam structure who changes to by the shear force wall is through demolising the position at former beam structure and carry on new floor and carry out the bar planting and consolidate, can carry the bearing capacity of the shear force wall of plateau beam structure greatly, satisfies the atress requirement and the bar planting requirement of leading to the car application scenario.

Drawings

Fig. 1 is a schematic structural diagram of a beam structure modified from a shear wall according to this embodiment.

Reference numerals: 100-original beam structure; 200-new floor slab; 300-planting a rib structure; 400-interface glue; 500-reinforcing steel bars.

Detailed Description

In order to make the technical problems, technical solutions adopted and technical effects achieved by the present invention clearer, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the present embodiment provides a beam structure changed from a shear wall, including an original beam structure 100, a new floor 200 and a bar-planting structure 300, the end position of the new floor 200 is staggered from the original beam structure 100, it is ensured that a construction joint is not through from top to bottom, the bar-planting structure 300 is provided in the new floor 200, and the bar-planting depth of the bar-planting structure 300 in the new floor 200 is greater than or equal to 20 d.

Optionally, new floor 200 end position staggers 80mm with former beam structure 100, and this kind of size can stagger the construction gap well and prevent to link up from top to bottom, prevents later stage concrete fracture.

Preferably, the new floor 200 is fixed to the original beam structure 100 by the reinforcing bars 500 at the same level as the original floor of the original beam structure 100. Preferably, the planting depth of the planting bar structure 300 in the new floor 200 is 23 d. The bar-planted structure 300 includes a top bar that is planted into the original beam structure 100 from top to bottom to better reinforce the modified beam structure.

Further, before installing the new floor slab 200 and the embedded bar structure 300, the surface layer of the installation position of the original beam structure 100 is roughened, and the new floor slab 200 and the embedded bar structure 300 are installed after the roughened surface is exposed. In order to seal the roughened surface to reinforce the strength of the whole modified beam structure, the roughened surface of the original beam structure 100 is coated with the interface adhesive 400 after the bar-planting structure 300 is implanted. After the glue is applied, a concrete layer is poured outside the interface glue 400.

Preferably, in order to ensure the strength and aging resistance of the roughened surface after coating, the interface adhesive 400 is a modified epoxy interface adhesive. Specifically, the interface adhesive 400 meets the requirements of the grade A adhesive, the shear bonding strength of the interface adhesive 400 is greater than or equal to 3.5MPa, and the interface adhesive is cohesive failure of concrete. The interface adhesive 400 can be cured in water and is qualified through the damp-heat aging test, the shear strength is reduced by less than 10% in the damp-heat aging test for 90 days, and the environment-friendly and non-toxic test is passed.

Further, the bar planting structure 300 further includes a thickening raft structure for the floor slab edge. Specifically, bodiness raft structure includes raft, two-way reinforcing bar and short steel bar, and two-way reinforcing bar is pour on the top layer of raft, and the short steel bar is planted in the raft from raft up end. The number of piles on raft top layer is pour to two-way reinforcing bar is the individual layer, has both satisfied the bodiness requirement of raft, can not waste the material again, increases too much cost. More specifically, to strengthen the bonding strength, the short reinforcing bars are implanted inside the raft and hook the bidirectional reinforcing bars. The depth of the short steel bars implanted into the raft is more than or equal to 15 decimeters. The specification of the short steel bar is phi 12@ 400. The specification of the bidirectional steel bar is phi 18@ 200. The structure can meet the bearing capacity requirement of application occasions of the thickened raft structure for the edges of the floor slab.

Preferably, in order to make the short reinforcing bar implant the raft smoothly, need to chisel hair to raft surface course, implant the short reinforcing bar after exposing the chisel hair layer. Similarly, in order to ensure the strength of the thickened raft and the subsequent smooth concrete pouring, the interface glue is coated on the roughened layer of the raft after the short steel bars are implanted. The interface adhesive is selected the same as the interface adhesive 400 described above, and a modified epoxy interface adhesive is also used. Specifically, the interface adhesive meets the requirements of A-level adhesive, the shear bonding strength of the interface adhesive is greater than or equal to 3.5MPa, and the interface adhesive is in cohesive failure of concrete. The interface adhesive can be cured in water, is qualified through damp-heat aging test, has the shear strength reduced by less than 10 percent in a 90-day damp-heat aging test, and passes an environment-friendly and non-toxic test.

The construction method of the beam structure modified from the shear wall in the embodiment comprises the following steps: after the shear wall of the original beam structure 100 is removed, a new floor slab 200 is carried at the floor slab of the original beam structure 100, and the new floor slab 200 is subjected to bar planting with the bar planting depth of 23 d; the end position of the new floor slab 200 is staggered by 80mm from the floor slab of the original beam structure 100, so that the construction joints are not communicated up and down, and the later-stage concrete cracking is prevented; the interface adhesive 400 is coated on the rough surface of the original beam structure 100, and concrete is poured for reinforcement and compaction.

The beam structure that is changed into by the shear force wall of this embodiment, through demolish position at former beam structure 100 and carry on new floor 200 and carry out the bar planting and consolidate, can improve the bearing capacity of the shear force wall of plateau beam structure 100 greatly, satisfy the atress requirement and the bar planting requirement of traffic application occasion.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a beam structure who changes by shear force wall, its characterized in that, includes former beam structure (100), new floor (200) and bar planting structure (300), new floor (200) end position with former beam structure (100) setting of staggering guarantees that the construction joint is non-link up from top to bottom, just be provided with bar planting structure (300) in new floor (200), bar planting structure (300) are in bar planting degree of depth more than or equal to 20d in new floor (200).

2. A shear wall-modified beam structure according to claim 1, wherein the new floor (200) termination locations are offset by 80mm from the original beam structure (100).

3. A shear wall-modified beam structure according to claim 1, wherein the embedded bar structure (300) has an embedded bar depth of 23d in the new floor slab (200).

4. The shear wall-modified beam structure of claim 1, wherein the new floor (200) is installed at the same level as the original floor of the original beam structure (100), and is fixed to the original beam structure (100) by means of steel bars (500).

5. The shear wall-modified beam structure of claim 1, wherein the bar-planted structure (300) comprises a top bar, and the top bar is planted in the original beam structure (100) from top to bottom.

6. A shear wall-modified beam structure according to claim 5, wherein the tendon-planting structure (300) further comprises a thickened raft structure for floor slab edges.

7. The shear wall-modified beam structure of claim 6, wherein the thickened raft structure comprises a raft, bidirectional reinforcing bars cast on a surface layer of the raft, and short reinforcing bars implanted into the raft from an upper end face of the raft.

8. The shear wall-modified beam structure according to any one of claims 1 to 7, wherein before the new floor slab (200) and the bar-planting structure (300) are installed, the surface layer of the original beam structure (100) at the installation position is roughened, and after the roughened surface is exposed, the new floor slab (200) and the bar-planting structure (300) are installed.

9. The shear wall-modified beam structure of claim 8, wherein the roughened surface of the original beam structure (100) is coated with an interface adhesive (400) after the embedded bar structure (300) is implanted.

10. A shear wall-modified beam structure according to claim 9, wherein the interface cement (400) is over-cast with a concrete layer.