Wallboard type novel underground continuous wall and construction method thereof

Abstract

The invention discloses a wallboard type novel underground continuous wall and a construction method thereof. The continuous wall consists of a plurality of unit slot sections, wherein each unit slot section comprises a reinforced concrete guide wall, two main walls and a milling plate; each milling plate is embedded and fixedly arranged between the corresponding two main walls with an embedded depth being 20-30cm, and is formed by plain concrete or cemented soil pouring. The I-stage main walls give full play to characteristics of large rigidity, resisting moment and small supporting structure deformation of the continuous wall; the foundation pit stability problem is solved by utilizing large embedded depth, large rigidity and the like of the continuous wall; the foundation pit deformation problem is solved by utilizing the large integral rigidity of the continuous wall; and the milling plates and the I-stage main walls achieve the effects of resisting water, proofing leakage, retaining soil between walls and retaining wall. A construction process of the wallboard type novel underground continuous wall is simple, so that material consumption is reduced; the lifting link and the top-pulling link of a joint tube (box) are cancelled, so that the risk that the joint tube is broken by pulling or buried is avoided; and the construction process is high in efficiency and is low in cost.

Description

technical field [0001] The invention relates to the technical field of engineering, and relates to a novel wall plate type underground continuous wall and a construction method thereof, which are suitable for deep foundation pit support projects with shallow buried water levels, deep silt or interactive impermeable layers. Background technique [0002] In recent years, the degree and requirements for the development and utilization of urban underground space in China have become higher and higher. my country has entered the era of large-scale development and utilization of underground space. Large-scale high-rise building basements, underground shopping malls, underground municipal engineering, etc. have deep foundation pit projects , urban buildings are becoming more and more dense, and foundation pits with a depth of more than 15m frequently have problems such as large structural deformation, pit wall instability, pit bottom surge, anti-seepage or precipitation failure, etc....

AI Technical Summary

Problems solved by technology

[0004] The joints of the underground diaphragm wall are the key parts that are prone to problems in the waterproof design of the underground diaphragm wall and its use. The joints of the underground diaphragm wall within the excavation range of the foundation pit and below the foundation pit foundation are very important. Currently, more joints are used. The forms include joint pipes, joint boxes and various partition joints, etc. Due to improper joint construction and other reasons, it is difficult to control the construction quality. Water leakage from wall joints is a common quality problem in the construction of underground diaphragm walls. Leakage not only directly affects The use of underground structures in engineering, and difficult to handle

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