Steel support structure

Abstract

The utility model relates to the technical field of foundation pit supporting construction, and discloses a steel supporting structure which comprises a foundation pit, a pit-in-pit is formed in the foundation pit, a slope is formed between the pit-in-pit and the inner bottom of the foundation pit, a foundation pit bottom plate is poured at the inner bottom of the foundation pit and located on the periphery of the slope, and the foundation pit bottom plate is connected with the foundation pit. A plurality of brackets are fixed to the upper surface of the foundation pit bottom plate in parallel, steel supports are arranged between the brackets and the inner side wall of the foundation pit, a plurality of stand column piles are fixed to the inner bottom of the pit-in-pit, and a plurality of I-shaped steel are symmetrically arranged between the stand column piles. According to the utility model, the requirements on new materials and resources are reduced, the principle of sustainable development is met, the complexity and the cost of construction are reduced, the construction efficiency is expected to be improved, the construction period is shortened, and the overall cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support construction, in particular to a steel support structure. Background Art

[0002] In construction projects, foundation pit support is an important part of ensuring construction safety and the stability of surrounding building structures. Foundation pit design usually involves pit-in-pit structures such as sump wells and elevator shafts. For pit-in-pits at the edge of the foundation pit, traditional foundation pit support structures need to be re-piled, requiring many new structures, and considering the lateral pressure from the edge of the foundation pit, which not only greatly increases the time and cost of the project, but also brings greater safety hazards to the safety of the foundation pit. Therefore, there is an urgent need for a pit-in-pit steel support structure at the edge of the foundation pit to solve the shortcomings of the traditional support structure. For this purpose, a steel support structure is designed. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one purpose of the utility model is to propose a steel support structure, which reduces the demand for new materials and resources, conforms to the principle of sustainable development, reduces the complexity and cost of construction, and is expected to improve construction efficiency, reduce construction period, and reduce overall cost.

[0004] The steel support structure proposed according to the utility model includes a foundation pit, a pit-in-pit is opened inside the foundation pit, a slope is opened between the pit-in-pit and the inner bottom of the foundation pit, a foundation pit bottom plate is cast at the inner bottom of the foundation pit and outside the slope, a plurality of corbels are fixed in parallel to the upper surface of the foundation pit bottom plate, steel supports are arranged between the corbels and the inner side walls of the foundation pit, a plurality of column piles are fixed to the inner bottom of the pit-in-pit, a plurality of I-beams are symmetrically arranged between the column piles, a first connecting steel plate is symmetrically fixed between the upper surfaces of the I-beams and outside the steel supports, a second connecting steel plate is commonly fixed to the top of the first connecting steel plate, and a third connecting steel plate is fixed between adjacent side walls of the I-beams.

[0005] Preferably, a plurality of supporting piles are fixed at the inner bottom of the foundation pit and close to the inner wall of the foundation pit.

[0006] Preferably, steel purlins are fixed to both ends of the steel support, and the steel purlins at both ends are respectively fixed to the inner side wall of the foundation pit and the side wall of the corbel.

[0007] Preferably, steel corbels are symmetrically fixed to the side walls of the column piles, the I-beams are fixed one-to-one on the upper surfaces of the steel corbels, and steel pads are placed at the connections between the steel corbels and the I-beams.

[0008] The beneficial effects of the utility model are: full use is made of the existing structure, especially the foundation pit floor and column piles, without the need to introduce additional new structures, reducing the demand for new materials and resources, and complying with the principle of sustainable development; the corbels cast on the foundation pit floor are used as supports for steel supports, without the need for re-piling, reducing the complexity and cost of construction, and are expected to improve construction efficiency, shorten construction periods, and reduce overall costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the overall structure of the steel support structure proposed by the utility model.

[0010] Figure 2 This is a schematic diagram of the local structure of the steel support structure proposed by the utility model from the first perspective.

[0011] Figure 3 This is a schematic diagram from a second perspective of the local structure of the steel support structure proposed by the utility model.

[0012] Figure 4 This is a schematic diagram from a third perspective of the local structure of the steel support structure proposed by the utility model.

[0013] In the figure: 1. foundation pit; 2. supporting piles; 3. pit within pit; 4. slope; 5. corbel; 6. steel purlin; 7. steel support; 8. column piles; 9. I-beam; 10. first connecting steel plate; 11. second connecting steel plate; 12. steel corbel; 13. steel pad; 14. foundation pit bottom plate; 15. third connecting steel plate. DETAILED DESCRIPTION

[0014] Reference Figure 1-4The steel support structure comprises a foundation pit 1, a pit in a pit 3 is provided inside the foundation pit 1, a slope 4 is provided between the pit in the pit 3 and the inner bottom of the foundation pit 1, in order to reduce the demand for the supporting structure and improve the flexibility of construction, a slope 4 method is adopted on the side of the non-adjacent supporting piles 2 of the pit in the pit 3, a foundation pit bottom plate 14 is cast at the inner bottom of the foundation pit 1 and located at the periphery of the slope 4, a plurality of corbels 5 are fixed in parallel to the upper surface of the foundation pit bottom plate 14, steel supports 7 are arranged between the corbels 5 and the inner side wall of the foundation pit, a plurality of column piles 8 are fixed to the inner bottom of the pit in the pit 2, a plurality of I-beams 9 are symmetrically arranged between the column piles 8, a plurality of I-beams 9 are symmetrically fixed between the upper surfaces of the I-beams 9 and located outside the steel supports 7 A first connecting steel plate 10 is provided, a second connecting steel plate 11 is fixed on the top of the first connecting steel plate 10, a third connecting steel plate 15 is fixed between adjacent side walls of the I-beam 9, in order to improve the structural rigidity and bending resistance, stiffening ribs are provided at the web position of the I-beam 9, in order to improve the bearing capacity of the structure, a steel pad 13 is provided between the I-beam 9 and the steel corbel 12, in order to make the most of the existing structure, the steel support 7 uses the corbel 5 cast on the foundation pit bottom plate 14 as a support, the steel corbel 12 is welded and fixed to the column pile 8, the I-beam 9 is welded and fixed to the steel corbel 12, and the steel support 7 is welded and fixed to the I-beam 9 through the first connecting steel plate 10 and the second connecting steel plate 11.

[0015] A plurality of support piles 2 are fixed at the inner bottom of the foundation pit 1 and close to the inner wall of the foundation pit 1 .

[0016] Steel purlins 6 are fixed to both ends of the steel support 7, and the steel purlins 6 at both ends are fixed to the inner wall of the foundation pit 1 and the side wall of the corbel 12 respectively.

[0017] Steel corbels 12 are symmetrically fixed to the side walls of the column piles 8, and the I-beams 9 are fixed one by one on the upper surfaces of the steel corbels 12, and steel pads 13 are placed at the connections between the steel corbels 12 and the I-beams 9.

[0018] When the device is assembled, the corbel 5 is fixed on the foundation pit bottom plate 14, the steel corbel 12 is fixed on the column pile 8, and the steel support 7 is fixed on the pit in the pit 3. The corbel 5 is cast on the foundation pit bottom plate 14, and the corbel 5 is connected to the steel support 7 through the steel purlin 6. The steel corbel 12 is welded and fixed to the column pile 8, the I-beam 9 is welded and fixed to the steel corbel 12, and the steel support 7 is welded and fixed to the I-beam 9 through the first connecting steel plate 10 and the second connecting steel plate 11.

Claims

1. A steel support structure, comprising a foundation pit, wherein a pit in a pit is provided inside the foundation pit, and a slope is provided between the pit in a pit and the inner bottom of the foundation pit, wherein: A foundation pit bottom plate is cast at the inner bottom of the foundation pit and located outside the slope, a plurality of corbels are fixed in parallel to the upper surface of the foundation pit bottom plate, steel supports are arranged between the corbels and the inner side walls of the foundation pit, a plurality of column piles are fixed at the inner bottom of the pit-in-pit, a plurality of I-beams are symmetrically arranged between the column piles, a first connecting steel plate is symmetrically fixed between the upper surfaces of the I-beams and located outside the steel supports, a second connecting steel plate is commonly fixed on the top of the first connecting steel plate, and a third connecting steel plate is fixed between adjacent side walls of the I-beams.

2. The steel support structure according to claim 1, characterized in that: A plurality of supporting piles are fixed at the inner bottom of the foundation pit and close to the inner wall of the foundation pit.

3. The steel support structure according to claim 1, characterized in that: Steel purlins are fixed to both ends of the steel support, and the steel purlins at both ends are respectively fixed to the inner side wall of the foundation pit and the side wall of the corbel.

4. The steel support structure according to claim 1, characterized in that: The side walls of the column piles are symmetrically fixed with steel corbels, the I-beams are fixed one by one on the upper surfaces of the steel corbels, and steel pads are placed at the connections between the steel corbels and the I-beams.

Images