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Cement soil enclosure wall-cast-in-place pile cantilever type combined support and construction method thereof

A technology of cement-soil mixing piles and retaining walls, which is applied in the field of geotechnical engineering, can solve difficult problems, achieve the effects of reducing impact, reducing lateral displacement and surface settlement outside the pit, and improving mechanical performance

Pending Publication Date: 2020-02-07
上海水业设计工程有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitations of the above aspects, there are great challenges in the design and construction of foundation pit support for new structures (buildings), and the design of foundation pit support under soft soil geological conditions is even more difficult

Method used

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  • Cement soil enclosure wall-cast-in-place pile cantilever type combined support and construction method thereof
  • Cement soil enclosure wall-cast-in-place pile cantilever type combined support and construction method thereof

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Embodiment Construction

[0017] The "a cement-soil retaining wall-cast-in-situ pile cantilever combined support" proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0018] Please refer to Figure 1~2 , this embodiment discloses a cement-soil retaining wall-cast-in-situ pile cantilever type combined support, which includes a cement-soil retaining wall 1, and the outer side of the cement-soil retaining wall 1 is covered with drilled cast-in-place piles 2 to form a combined support. Concrete pressure slab 3 is set on the support roof to increase the integrity of the enclosure structure,...

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Abstract

The invention discloses a cement soil enclosure wall-cast-in-place pile cantilever type combined support. The cement soil enclosure wall-cast-in-place pile cantilever type combined support comprises acement soil stirring pile enclosure wall, and is characterized in that cast-in-place bored piles are driven on the outer side of the cement soil stirring pile enclosure wall to form a combined support; a concrete pressure top plate is arranged at the top of the combined support for improving the integrity of an enclosure structure; and the bottom of a foundation pit on the inner side of the cement soil stirring pile enclosure wall is reinforced, so that the stability of the enclosure structure is improved, and the top and bottom projection deformation is controlled. The combined support can be used for the conditions of limited construction conditions of the enclosure structure or buildings needing to be protected out of the pit, can effectively improve the rigidity of the enclosure structure under the condition of not increasing the width of the enclosure structure, reduces lateral displacement of the enclosure structure and the pit external ground surface settlement, reduces the influence on surrounding environments by foundation pit excavation, reduces the construction period, and achieves excellent applicability and social benefit.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a cement-soil enclosure wall-cast-in-situ pile cantilever type combined support and a construction method thereof. Background technique [0002] A large number of foundation pit support projects are required for new construction (construction) in urban areas, and the construction conditions are often limited, mainly in the following three aspects: (1) The current urban areas generally have regular layouts, compact spaces, and underground pipe networks. Intricate, the construction space is often limited by surrounding structures (buildings) and pipelines, and foundation pits generally do not have the conditions for grading and excavation. (2) During the new construction (construction) period, it is necessary to ensure the normal operation of the surrounding pipelines and structures (buildings), and the displacement of the surrounding structures (buildings) and underground p...

Claims

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Application Information

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IPC IPC(8): E02D17/04
CPCE02D17/04E02D2300/002E02D2600/20
Inventor 卢辰许大鹏郑建建何剑平王国渝
Owner 上海水业设计工程有限公司
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