Construction device of high-pressure impact water-type Lassen steel sheet pile

Abstract

The invention relates to a construction device of a high-pressure impact water-type Lassen steel sheet pile, and belongs to a construction device of an urban underground integrated pipe gallery. The construction device of the high-pressure impact water-type Lassen steel sheet pile is characterized by comprising a water storage tank, a low-pressure hose, a high-pressure water pump, a high-pressurehose, a high-pressure threaded joint, a fixing plate, a main pressure pipe and conical nozzles. The water storage tank is placed on the ground, the low-pressure hose is arranged at a water outlet of the water storage tank, the high-pressure water pump is arranged at the water outlet end of the low-pressure hose, and the high-pressure hose is arranged at a water outlet of the high-pressure water pump. The high-pressure threaded joint is arranged at the water outlet end of the high-pressure hose, the main pressure pipe is welded to the water outlet end of the high-pressure threaded joint, and the conical nozzles are screwed on water outlet branch pipes of the main pressure pipe. When in use, the high-pressure water pump works and high-pressure water is sprayed out through the conical nozzles, and thus the synchronous construction of high-pressure impact water and Lassen steel sheet piles is realized, the resistance of the steel sheet pile is reduced, and the construction efficiency is improved.

Description

Technical field [0001] The invention belongs to a construction device for an urban underground comprehensive pipe gallery, and particularly relates to a construction device for a Larsen steel sheet pile. Background technique [0002] At present, with the function and positioning of underground comprehensive pipe corridors in urban development, large-scale, multi-functional, and permanent underground comprehensive pipe corridors are the inevitable trend of urban development. However, most underground comprehensive pipe corridors are located in The main line of urban roads requires that the construction of the pipe gallery must be put into use in the shortest time under the premise of meeting the design requirements, and the selection of the support method of the foundation pit is a strong guarantee for the construction progress. The traditional support method is various types of cast-in-place piles. However, during the construction process, there are problems such as large volume ...

AI Technical Summary

Problems solved by technology

The traditional support methods are all kinds of cast-in-place piles. However, during the construction process, there are large volumes of steel bars and concrete, long construction periods, poor water-stop effects, and secondary constructions are easy to occur, resulting in high construction costs and low work efficiency. low, resulting in a waste of human and material resources; when geological conditions permit, using Larsen steel sheet piles (note: this Larsen steel sheet pile is a special steel sheet pile) has more advantages than cast-in-situ piles, and its characteristics are: construction The time is short, the safety factor is high, the turnover times are many, the water-stopping effect is good, and the use is economical and reasonable

However, when the geological conditions contain silt, fine sand and medium-coarse sand, the compactness of silt, fine sand and medium-coarse sand will increase correspondingly after such geological conditions are shaken and squeezed during the construction of Larsen steel sheet piles , increasing the friction of Larsen steel sheet piles, thereby reducing work efficiency and increasing construction difficulty

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