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Irregular foundation pit supporting structure and construction method

A technology of foundation pit support and construction method, which is applied in basic structure engineering, excavation, construction, etc., can solve the problem of insufficient support strength, and achieve the effects of shortening construction period, high safety performance, and high support strength

Inactive Publication Date: 2018-05-18
ZHONGWEI CONSTR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, the support, reinforcement and protection measures are adopted for the side wall of the foundation pit and the surrounding environment. For protection, the sprayed anchor net is equipped with anchor pipes inserted into the side of the foundation pit. Such a foundation pit support structure has insufficient support strength and has potential safety hazards.

Method used

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  • Irregular foundation pit supporting structure and construction method
  • Irregular foundation pit supporting structure and construction method
  • Irregular foundation pit supporting structure and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Embodiment one: if figure 1 , 2 As shown, an irregular foundation pit support structure includes a cement support wall 1 arranged around the foundation pit, and a plurality of cement support walls 1 are evenly pierced on the cement support wall 1 to tighten the cement support wall 1 on the side wall of the foundation pit. The tension anchor 2, the cement support wall 1 includes several support units 11 connected in sequence.

[0044]The cement support wall 1 can prevent the foundation pit from collapsing during excavation and use to a certain extent, ensure the safety of the underground structure construction and the surrounding environment of the foundation pit, and effectively prevent the buildings around the foundation pit from tilting. The connecting columns 112 are fastened together two by two during use, so it is not easy to be partially tilted when subjected to external force during use. In use, because the cement support wall 1 is tightened by the tension ancho...

Embodiment 2

[0050] Embodiment 2: A construction method for an irregular foundation pit support structure, comprising the following construction steps:

[0051] S1. According to the construction drawing, measure and set the construction contour line of the cement mixing pile on site, and draw the contour line with white ash;

[0052] S2. Place the cement mixing pile machine used for construction at the place where construction is required, and lay steel plates and road substrates under the cement mixing pile machine, then move the cement mixing pile machine, check the positioning after the movement, and correct any deviations in time , the pile position deviation is not greater than 50mm, the cement mixing pile machine should be stable and straight in place, and observe with theodolite or wire hammer to ensure the verticality of the drill bit of the cement mixing pile machine;

[0053] S3, on-site stirring to prepare cement slurry;

[0054] S4, start the cement mixing pile machine, drill ...

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Abstract

The invention relates to an irregular foundation pit supporting structure and a construction method. The irregular foundation pit supporting structure comprises a cement supporting wall which is arranged around a foundation pit, wherein a plurality of tensioning anchors for tensioning the cement supporting wall on a side wall of the foundation pit uniformly penetrate through the cement supportingwall; the cement supporting wall comprises a plurality of supporting units which are connected in sequence; each supporting unit comprises a cement supporting column and a cement connecting column located at one side of the cement supporting column; connecting bulges connected with each cement connecting column are symmetrically arranged at two sides of the corresponding cement supporting column;each cement supporting column is provided with a connecting groove matched with the corresponding connecting bulges; a plurality of pre-embedded steel bars are uniformly distributed in each cement supporting column. The cement supporting wall is arranged, so that the side wall of the foundation pit can be effectively supported, the foundation pit does not easily collapse, and the safety performance is high.

Description

technical field [0001] The invention relates to an irregular foundation pit support structure and a construction method. Background technique [0002] With the development of economy, land resources tend to be tense. Civil engineering engineering, especially civil engineering engineering in prosperous areas of the city, began to develop and utilize underground space on a large scale. At present, my country's building structures, especially some commercial building structures, generally have a one-story or two-story basement. Some large-scale building structures even include three-story and four-story basements, and the excavation depth of the foundation pit is less than 16m. At the same time, with the development of rail transit in recent years, the excavation of subway station foundation pits has become more and more common. The excavation depth of subway station foundation pits generally exceeds 20m. There is a certain degree of danger in the construction of foundation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04
CPCE02D17/04
Inventor 朱武
Owner ZHONGWEI CONSTR ENG CO LTD
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