CN212129193U

CN212129193U - Section steel shear frame flat raft plate foundation

Info

Publication number: CN212129193U
Application number: CN202020406978.9U
Authority: CN
Inventors: 卞锋; 张楠楠; 唐海玲; 王新军
Original assignee: Shanghai Gad Architectural Design Co ltd
Current assignee: Shanghai Gad Architectural Design Co ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-12-11
Anticipated expiration: 2030-03-26

Abstract

The utility model belongs to the building engineering field specifically, relates to a shaped steel shear frame flat raft board basis. Shaped steel shear frame flat raft board basis includes: the foundation raft is placed on the plain concrete cushion layer, and the plain concrete cushion layer is arranged on foundation soil; wherein: the inside shaped steel shear frame that sets up of basic raft. Compared with the prior art, the utility model discloses following beneficial effect has: the bottom steel bars of the bottom plate can be arranged in a pulling-through manner, so that waste caused by respective anchoring of the steel bars is avoided, no thickening region is provided, the consumption of concrete is reduced, the steel bars do not need to be bent, the construction efficiency is improved, the thickening region is cancelled, the bottom plate is arranged in the same thickness, and the efficiency and the reliability of waterproof construction are greatly improved; the foundation excavation does not need to excavate a thickened area, the workload of side templates of the thickened area is reduced, particularly in a rock area, the cost can be greatly reduced, and the working efficiency is improved; the profiled steel shear frame can be prefabricated in a factory, and can be directly installed by hoisting on site, so that the workload of binding on site steel bars is reduced.

Description

Section steel shear frame flat raft plate foundation

Technical Field

The utility model belongs to the building engineering field specifically, relates to a shaped steel shear frame flat raft board basis.

Background

With the development of socio-economy, people have higher and higher requirements on residential buildings, and underground garages become the conventional configuration of residential buildings. The underground garage is generally set as the underground layer, and there is the earthing on roof upper portion, and the bottom plate is located on the basis. Compare the more upper portion building of the number of piles, underground garage post interval rule, the atress is simple, and the load that every post bore is more even and the load is little. Pillar load transmits for the bottom plate, and conventional building structure design can set up bottom plate thickening district in the certain limit of post limit, avoids the post to the die-cut destruction of bottom plate, and the bending resistance problem of solution bottom plate that simultaneously bottom plate thickening district set up also can be fine. However, the arrangement of the thickened area causes that the bottom layer of the steel bar of the bottom plate can not be pulled through continuously, and the steel bar needs to be cut off in the thickened area and anchored respectively, thus causing the waste of the steel bar; due to the existence of the thickened area, the bottom surface of the bottom plate is uneven, and the waterproof construction difficulty is increased; thickened area needs to be excavated alone, and especially when the ground is the rock, the construction degree of difficulty increases, and thickened area lateral wall need set up solitary template, increases template engineering roof beam, and this will lead to the cost of labor to increase.

The raft foundation with the column bottom zone thickened area is a conventional method for designing the foundation of the current underground garage, but the raft foundation has some defects, so that the labor cost is continuously increased nowadays, and a novel foundation form for completing basement floor engineering with high efficiency and economy needs to be explored.

SUMMERY OF THE UTILITY MODEL

To above user demand, the utility model provides a shaped steel shear frame flat raft board basis cancels column bottom raft board thickening district, sets up shaped steel shear frame at the column bottom, satisfies the bending resistance of post lower plate and anti die-cut requirement.

In order to achieve the above purpose, the utility model adopts the following scheme:

shaped steel shear frame flat raft board basis includes: the foundation raft is placed on the plain concrete cushion layer, and the plain concrete cushion layer is arranged on foundation soil; wherein: the inside shaped steel shear frame that sets up of basic raft.

Preferably, raft bottom stay bar is set up to basic raft bottom, and raft top stay bar is set up to basic raft top, and basic raft bottom sets up raft bottom additional reinforcement.

Preferably, set up shaped steel shear frame and be the cruciform structure, shaped steel shear frame is located raft bottom stay-through reinforcing bar, raft top stay-through reinforcing bar between.

Preferably, the centre of the cruciform structure of the profiled steel shear frame coincides with the centre of the upper concrete column.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the bottom steel bars of the bottom plate can be arranged in a pulling-through manner, so that waste caused by respectively anchoring the steel bars is avoided, no thickening area is provided, the consumption of concrete is reduced, the steel bars do not need to be bent, and the construction efficiency is improved;

2. a thickened area is eliminated, and the bottom plate is arranged in an equal thickness mode, so that the efficiency and the reliability of waterproof construction are greatly improved;

3. the foundation excavation does not need to excavate a thickened area, the workload of side templates of the thickened area is reduced, particularly in a rock area, the cost can be greatly reduced, and the working efficiency is improved;

4. the profiled steel shear frame can be prefabricated in a factory, and can be directly installed by hoisting on site, so that the workload of binding on site steel bars is reduced.

Drawings

Fig. 1 is a schematic top view of a steel shear frame raft plate foundation structure;

fig. 2 is a schematic cross-sectional view of a foundation structure of a steel shear frame flat raft plate;

in the figure: 1. an upper concrete column, 2, a foundation raft; 3. 4, pulling through steel bars at the bottom of the raft plate, and pulling through steel bars at the top of the raft plate; 5. the raft bottom adds reinforcing bar, 6, shaped steel shear frame, 7, die-cut design cross-section girth, 10, foundation soil, 11, plain concrete bed course.

Detailed Description

As shown in fig. 1, the steel shear frame flat raft base comprises: the foundation raft 2 is placed on a plain concrete cushion layer 11, and the plain concrete cushion layer 11 is arranged on foundation soil 10; the inside shaped steel shear frame 6 that sets up of basic raft 2.

Raft bottom through-pulling steel bars 3 are arranged at the bottom of the basic raft, raft top through-pulling steel bars 4 are arranged at the top of the basic raft, and raft bottom additional steel bars 5 are arranged at the bottom of the basic raft.

Set up shaped steel shear frame 6 and be the cruciform structure, shaped steel shear frame 6 is located raft bottom stay-through reinforcement 3, raft top stay-through reinforcement 4 between.

The center of the cross-shaped structure of the profile steel shear frame 6 coincides with the center of the upper concrete column 1.

When the device is used, firstly, the foundation soil 10 is excavated to the designed elevation, and the plain concrete cushion layer 11 is poured on the upper part of the foundation soil to protect the foundation soil 10. And after the plain concrete cushion layer 11 is hardened, binding the pull-through steel bars 4 at the top of the raft, and setting additional steel bars 5 at the bottom of the raft according to design calculation requirements. After finishing raft bottom bar arrangement, arrange shaped steel shear frame 6 in the reinforcing bar upper strata to it is fixed to install, lay raft top pull-through reinforcing bar 4 at last. And after the bottom plate reinforcing steel bars are laid, binding the wall column reinforcing steel bars, and finally finishing the pouring and tamping of the concrete.

Compare in traditional raft thickening basis under post, the construction process has been simplified greatly to shaped steel shear frame flat raft base, raises the efficiency, and save material has better economic benefits.

Claims

1. The utility model provides a shaped steel shear frame flat raft board basis, includes: the foundation raft is placed on the plain concrete cushion layer, and the plain concrete cushion layer is arranged on foundation soil; the method is characterized in that: the inside of the basic raft is provided with a profile steel shear frame; the raft bottom of foundation raft sets up raft bottom and draws through the reinforcing bar, and basic raft top sets up raft top and draws through the reinforcing bar, and basic raft bottom sets up raft bottom additional reinforcement.

2. The profile steel shear frame flat raft foundation of claim 1, wherein the profile steel shear frame is arranged in a cross-shaped structure, and the profile steel shear frame is located between the raft bottom stay-through rebars and the raft top stay-through rebars.

3. The profile steel shear frame raft plate foundation of claim 2, wherein the center of the cruciform structure of the profile steel shear frame coincides with the center of the upper concrete column.