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Supporting structure of large foundation pit

A technology for supporting structures and foundation pits, which is applied in basic structure engineering, excavation, construction, etc., can solve the problems of high construction cost and easy deformation of horizontal support beams, etc., so as to improve the supporting effect, ensure strength and rigidity, and reliable rigidity Effect

Active Publication Date: 2014-10-15
ZHEJIANG PROVINCE INST OF ARCHITECTURAL DESIGN & RES
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Problems solved by technology

[0006] An object of the present invention is to solve the problems of the existing large-scale foundation pit support structure that the horizontal support beam is easily deformed and the construction cost is high, and to provide a large-scale foundation pit support structure, which can significantly improve the horizontal support beam. strength and rigidity to reduce its construction cost

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 , figure 2As shown, a large-scale foundation pit support structure, the shape of the foundation pit is roughly rectangular, including cast-in-situ piles 1 arranged around the edge of the foundation pit, the cast-in-place piles can be formed by pouring concrete after drilling, or using SMW piles and other existing piles. There is technical completion. In addition, a horizontal first purlin girder 2 is arranged inside the upper end of the cast-in-place pile so as to connect the cast-in-place piles into one body. Then connect the horizontal support beam 4 curved downwards between the first purlin beams on the opposite sides of the long opposite sides of the foundation pit. The horizontal support beam can be a reinforced concrete beam or be made of steel such as I-shaped steel or H-shaped steel. The steel structure beam ...

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Abstract

The invention discloses a supporting structure of a large foundation pit. The supporting structure comprises filling piles, which are arranged around the edge of the foundation pit, and first circuit purlin beams connected to the inner sides of the upper ends of the filling piles, wherein a horizontal support beam, which is downwards bent in an arc-shaped manner, is arranged between the first circuit purlin beams on two opposite sides of the foundation pit, the lower side of the horizontal support beam is connected to a plurality of upright posts at intervals, an opposite support mechanism is arranged between the horizontal support beam and each upright post, the lower ends of the upright posts are buried in a soil layer under a base plate of the foundation pit, and a corner support beam is connected between the adjacent first circuit purlin beams at the corner of the foundation pit. According to the supporting structure, the supporting intensity of the large foundation pit is remarkably improved, and the construction cost of a support system is reduced.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a support structure for the side wall of a large foundation pit. [0002] Background technique [0003] When constructing a building with an underground layer, it is first necessary to excavate a foundation pit, pour a base plate at the bottom of the foundation pit, and then build a corresponding underground structure. Since the depth of the foundation pit is usually more than ten meters, it is necessary to support the side wall of the foundation pit. The common foundation pit support method is to form rows of cast-in-situ piles by pre-drilling around the edge of the foundation pit, and then place the cast-in-place piles The inner side of the upper end is connected to the purlin beams, and then the horizontal support beams are used to support the purlin beams on opposite sides of the foundation pit. However, for some large buildings, there is a problem with this sup...

Claims

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Application Information

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IPC IPC(8): E02D17/04
Inventor 刘兴旺李志飙陈卫林施祖元曹国强
Owner ZHEJIANG PROVINCE INST OF ARCHITECTURAL DESIGN & RES
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