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Underground cement-soil steel wall continuous inserting perpendicularity control construction method

A technology of cement-soil wall and construction method, which is applied in excavation, sheet pile wall, foundation structure engineering and other directions, can solve the problems of enclosure sealing, locking effect, large deviation, etc., so as to solve the problem of narrow construction space and ensure verticality control. and construction quality

Active Publication Date: 2020-10-30
SHANGHAI FOUND ENG GRP
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Problems solved by technology

The verticality control is the key during the construction process. If the verticality of the section steel insertion is not good, the deviation will increase with the continuous insertion of the subsequent section steel, which will affect the closure and locking of the enclosure

Method used

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  • Underground cement-soil steel wall continuous inserting perpendicularity control construction method
  • Underground cement-soil steel wall continuous inserting perpendicularity control construction method
  • Underground cement-soil steel wall continuous inserting perpendicularity control construction method

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Embodiment Construction

[0064] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0065] like Figure 1 to Figure 11 Shown, a kind of underground cement-soil-steel wall continuous insertion verticality control construction method, its steps are as follows:

[0066] S1: Guide wall construction: Before the construction of the underground cement-soil wall, it is advisable to build a guide wall, which is mainly used for the guidance and positioning of the underground cement-soil wall and to prevent the collapse of the groove wall. Most of the guide walls are cast-in-place reinforced concrete structures, and steel guide beams can also be used for multiple uses.

[0067] S2: Cement-soil wall construction: After the guide wall is completed, the cement-soil wall construction can be carried out, and the cement-soil wall groove can be constructed with CSM and TRD construction techniques of equal thickness cement-soil wall constructi...

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Abstract

The invention relates to an underground cement-soil steel wall continuous inserting perpendicularity control construction method. The method comprises the following steps of (1), constructing a guidewall; (2), constructing a cement-soil wall; (3), mounting a guide frame; (4), constructing positioning section steel; (5), mounting a lock catch protective sleeve rod; (6), continuously splicing lockcatch section steel; and (7) displacing, constructing the next groove section, and repeated carrying out the steps (1)-(7) to form an underground continuous enclosure. The construction method adopts the guide frame and the positioning section steel for guide control, and combines the continuous splicing process of the lock catch section steel for the real-time vertical and locking control, so thatthe perpendicularity control and the construction quality in the construction process of an underground cement-soil continuous steel wall are ensured. Meanwhile, custom-made section steel segment splicing connection construction is adopted, and the construction method can well solve the problems of narrow construction space, high work efficiency requirement, large construction difficulty and highverticality control requirement, and has great advantages in construction in downtown areas and complex environments.

Description

technical field [0001] The invention relates to a construction method for foundation pit engineering enclosure, in particular to a construction method for continuously inserting and placing underground cement-soil-steel walls to control the verticality. Background technique [0002] In recent years, my country's infrastructure construction has developed by leaps and bounds, especially cities, which are gradually developing into three-dimensional spaces in the air, ground and underground. At present, foundation pit engineering is the most direct and effective method to form underground space, and has been widely used in urban construction engineering, subway engineering, traffic engineering and other fields. With the development of underground space, the depth of foundation pit excavation is also increasing. Deep foundation pits are mostly located in urban areas, surrounded by many buildings, staggered roads, and vertical and horizontal distribution of underground pipelines....

Claims

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Application Information

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IPC IPC(8): E02D5/18E02D17/04E02D19/18
CPCE02D5/18E02D17/04E02D19/18
Inventor 李耀良郭宏斌罗云峰李吉勇沈斌朱德勇张哲彬张云海
Owner SHANGHAI FOUND ENG GRP
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