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Construction method for foundation pit support

A construction method and technology of foundation pit support, which is applied in the direction of foundation structure engineering, excavation, construction, etc., can solve the problems of foundation pit deformation, construction volume and high cost, and achieve the effect of large construction operation area, improved stability and high rigidity

Inactive Publication Date: 2017-07-18
CCCC THIRD HARBOR ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention is to overcome the problems in the prior art that there is still a risk of deformation in the vertical direction of the foundation pit, and the construction volume is large and the cost is high, so as to provide a method that can effectively avoid the deformation of the foundation pit and can effectively reduce the deformation of the foundation pit. The construction method of foundation pit support that shortens the construction speed due to the construction volume

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  • Construction method for foundation pit support
  • Construction method for foundation pit support
  • Construction method for foundation pit support

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Embodiment Construction

[0021] Such as figure 1 and figure 2 as well as image 3 As shown, the present embodiment provides a construction method for foundation pit support, and the steps are as follows: Step S1: Set occlusal piles 11 along the inner wall of the foundation pit, and make the occlusal piles 11 form a closed cofferdam. Excavate the earthwork after the construction of the occlusal pile 11 is completed; step S2: construct the first anchor body, and set the ring beam 12 along the occlusal pile 11, and install the first fish-belly beam tool combination 20 on the on the ring beam 12; step S3: apply prestress to the first fish-belly beam tool combination 20; step S4: continue to excavate the earth, and construct the second anchor 32; step S5: install the second Two fish-belly beam tool combinations 40, applying prestress to the second fish-belly beam tool combination 40; step S6: continue to excavate the earthwork until the bottom of the foundation pit, and pour a cushion at the bottom of t...

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Abstract

The invention relates to a construction method for a foundation pit support. Firstly, occlusion piles are arranged along the inner wall of a foundation pit and are enabled to form a closed cofferdam, and earth is excavated after the occlusion piles are constructed; secondly, a first anchor body is constructed, and a first fish belly beam tool type combination is installed; then, prestress is applied to the first fish belly beam tool type combination; then, a second anchor body is constructed; a second fish belly beam tool type combination is installed and prestress is applied to the second fish belly beam tool type combination; and finally the earth is excavated to the bottom of the foundation pit, and cushion layer concrete is poured at the bottom of the foundation pit. According to the construction method for the foundation pit support, the construction is convenient, the cost and the construction period are reduced, and the deformation of the foundation pit can be avoided.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a construction method for foundation pit support. Background technique [0002] With the continuous development and utilization of urbanization and underground space, the construction of high-rise buildings, the construction of large-scale municipal facilities, and the development of a large number of underground spaces have promoted the rapid development of foundation pit engineering, and related engineering technologies have gradually matured. Since the beginning of the 21st century, foundation pit engineering has shown a development trend of "big, deep, tight, and close". At present, foundation pit projects are gradually showing the characteristics of fast development, wide distribution area, large foundation pit area, deep depth, and complex surrounding environment. More and more large-scale deep foundation pit projects need safe, convenient, fast and economical sup...

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Application Information

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IPC IPC(8): E02D17/04E02D5/36
CPCE02D17/04E02D5/36E02D2250/0046
Inventor 刘永辉曹根祥叶中海李奎钟其飞
Owner CCCC THIRD HARBOR ENG
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