Water-stopping type prefabricated assembly type foundation pit supporting construction mode

Abstract

The invention discloses a water-stopping type prefabricated assembly type foundation pit supporting construction mode. The mode comprises the following steps of carrying out integral construction budget, prefabricating supporting piles, mounting one-way grouting valve pipes, carrying out supporting pile construction, carrying out subsequent pile-among grouting water stop belt construction, carrying out cement soil stirring embedding fixing layer construction and the like. According to the mode, mortise groove structures are arranged on pile bodies of the supporting piles, a grouting space is formed between every two adjacent mortise grooves of the pile bodies, cement slurry or mixture of water glass and cement slurry are injected into grouting channels in foundation pit supporting engineering, the adjacent pile bodies can be stably connected, water stop belts can be prepared, and the tight connection between every two adjacent pile bodies can be ensured; and the prefabricated supporting piles are used as structural stiffeners and has the characteristics of high strength and high compactness, and meanwhile, the prefabricated supporting pile has the characteristics of large section rigidity, excellent bending resistance and no field maintenance. The construction installation of the prefabricated supporting piles adopts mechanical chemical methods such as a static pressure method,an impact method and the like, the construction speed is extremely rapid, and the construction period can be greatly saved.

Description

technical field [0001] The invention relates to the technical field of civil engineering, and more specifically relates to a water-cutting type prefabricated foundation pit support construction method. Background technique [0002] The foundation pit support is to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit. The support, reinforcement and protection measures are adopted for the side wall of the foundation pit and the surrounding environment; the foundation pit support project is an important part of the underground engineering construction , has very high requirements for its safety and reliability, and at the same time adapts to the project budget, and also has high requirements for the cost of foundation pit support. At present, in the field of civil engineering, there are a wide range of applications for retaining support structures used in river channel revetment engineering, municipal drainage ditches...

AI Technical Summary

Problems solved by technology

[0005] 1. Long construction period: long concrete curing period of the main structure + cumbersome procedures;

[0006] 2. Unable to meet the standard civilized construction requirements: messy construction site, cross-flow of sewage, poor environmental protection;

[0007] 3. High project cost

[0008] 4. With the traditional foundation pit support method, if it is necessary to repair the problematic part, the maintenance is very expensive and the maintenance cost is high

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