Precast concrete sheet pile capable of enhancing water-cutting effect of cement-soil mixing pile

Abstract

The invention discloses a precast concrete sheet pile capable of enhancing the water-cutting effect of a cement-soil mixing pile. The precast concrete sheet pile is of an I-shaped reinforced concretesheet pile structure, and can be inserted into the cement-soil mixing pile to form a composite soil retaining and water cutting structure. The precast concrete sheet pile performs high-pressure grouting on the side of the cement-soil mixing pile through a grouting device of a pile body, and the water-cutting effect of the cement-soil mixing pile is effectively enhanced. According to the precast concrete sheet pile capable of enhancing the water-cutting effect of the cement-soil mixing pile, the amount of reinforced steel bars and concrete for a soil retaining structure of a foundation pit canbe reduced, the construction cost is saved, the probability of water leakage of a water-cutting structure is further reduced, and the safety of the foundation pit is improved.

Description

technical field [0001] The invention relates to a construction method for foundation pit support, belongs to the field of construction, and in particular relates to a prefabricated concrete sheet pile for enhancing the water interception effect of a cement-soil mixing pile. Background technique [0002] With the continuous development of the city, the construction site is becoming more and more tense, and more and more foundation pit support projects are adjacent to buildings (structures), underground pipelines, roads, etc. Although grading, soil nail walls, gravity cement-soil walls, etc. The cost is small but requires a large space, which is difficult to be adopted, and the support structure mainly based on vertical support will account for an increasing proportion of urban foundation pit support. Most of the foundation pits excavated below the groundwater level also involve groundwater control issues. In many cities, the precipitation scheme is limited, and the water inte...

AI Technical Summary

Problems solved by technology

However, due to complex and changeable geological conditions, and some unavoidable accidents during construction, such as underground obstacles, mechanical failures, shutdowns under special circumstances, etc., or defects such as discontinuous water interception structures due to lax construction quality control, resulting in Leakage at the bottom or side walls of the foundation pit will bring difficulties to the construction of the earthwork of the foundation pit and the main body of the project. In severe cases, it may cause major safety accidents. At the same time, the long lease period of the section steel and the inability to effectively recover after construction will increase the cost.

[0003] For the existing problems in related technologies, no effective solutions have been proposed yet

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