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Foundation pit supporting structure

A technology of foundation pit support and split structure, which is applied in foundation structure engineering, sheet pile wall, excavation and other directions, can solve the problems of low construction efficiency, large impact on construction period, long setting time, etc. Effect

Inactive Publication Date: 2021-03-09
周兆弟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to this construction method, the supporting beams are made on site, and the setting time is long. It usually takes 2-3 days for the strength to meet the design requirements.
Therefore, its construction efficiency is low, which has a great impact on the subsequent construction period.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 1 and figure 2 As shown, the present embodiment provides a support structure for a foundation pit, including a retaining wall 10, which has more than two prefabricated retaining members 1 spliced ​​with each other, and a supporting beam system 20, at least one end of which tendons are And / or part of the embedded parts are mechanically connected and fixed to the embedded parts of the prefabricated enclosure member 1, and the support beam system 20 is arranged substantially horizontally.

[0058] In above-mentioned structure, utilize the enclosure wall 10 that the prefabricated enclosure member 1 that splices together constitutes, the enclosure wall 10 that forms can be used as the outer wall of building various underground buildings such as multi-storey basement, underground railway, underground commercial street, During follow-up construction, it only needs to be modified on the basis of the retaining wall 10, and waterproofing and other treatments can ...

Embodiment 2

[0072] In this embodiment, the same reference numerals are assigned to the same parts as those in Embodiment 1, and the same text descriptions are omitted.

[0073] The difference between this embodiment and Embodiment 1 lies in that the structural forms of the connectors are different.

[0074] In addition, because the connector 3 takes various measures to ensure the dimensional accuracy and manufacturing accuracy of the components during the manufacturing process, the dimensional error of the connector 3 and the position error of each component in the connector 3 are still inevitable, and the gap between components The matching accuracy error is also unavoidable (such as thread clearance error); on the other hand, in order to ensure the smooth progress of the assembly, a certain degree of clearance must be left between the connectors 3 to avoid collisions during the assembly process, and these clearances The existence of also makes there is an inevitable length error between...

Embodiment 3

[0085] In this embodiment, the same reference numerals are assigned to the same parts as in Embodiment 2, and the same text descriptions are omitted.

[0086] The difference between this embodiment and Embodiment 2 lies in that the structural forms of the connectors are different.

[0087] Such as Figure 9 As shown, in this embodiment, the length adjustment part 35 is a clamping adjustment cavity 35b, the butt end of one of the butt joint piece 34 and the connection part 31 has a thick part 35d with a diameter larger than the main body, and the other butt end is provided with a The body passes through the through hole 35e with a minimum diameter smaller than the thick part 35d, the diameter of the clamping adjustment cavity 35b is larger than the maximum outer diameter of the thick part 35d, and the axial length of the clamping adjustment cavity 35b is greater than the axial length of the thick part 35d, It is used for adjusting the mating length of the connecting member 34 ...

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Abstract

The invention provides a foundation pit supporting structure. The foundation pit supporting structure comprises an enclosure wall and a supporting beam system, wherein the enclosure wall is provided with two or more prefabricated enclosure components which are spliced with one another; at least one end of a stress rib and / or part of embedded parts of the supporting beam system are / is mechanicallyconnected and fixed to embedded parts of the prefabricated enclosure components; and the supporting beam system is roughly horizontally arranged. According to the foundation pit supporting structure,the prefabricated supporting beam system is mechanically connected to the enclosure components, the supporting beam system only needs to be hoisted to the ground, the stress rib and / or the embeddedparts of the supporting beam system are / is mechanically connected to the embedded parts of the enclosure components, then earthwork below can be excavated, steel bar binding and concrete pouring do not need to be carried out on site, the situation that concrete is solidified on site is not needed, and the construction time can be greatly saved.

Description

technical field [0001] The invention relates to the technical field of foundation construction, in particular to a foundation pit support structure. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the base level and foundation plane size. Before excavation, the excavation plan should be determined according to the geological and hydrological data, combined with the conditions of the nearby buildings, and the waterproof and drainage work should be done well. If the excavation is not deep, the side slope can be used to stabilize the soil slope, and the slope size is determined according to the relevant construction regulations. For those with deep excavation and nearby buildings, the foundation pit wall support method, shotcrete retaining wall method, and large foundation pit even adopt methods such as underground diaphragm wall and column-type bored pile interlocking to prevent the outer soil layer fro...

Claims

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Application Information

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IPC IPC(8): E02D17/04E02D5/03
CPCE02D5/03E02D17/04E02D2300/002E02D2300/0029
Inventor 周兆弟
Owner 周兆弟
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