Construction method of interlocking pile for soft soil and soil layer with obstacle

Abstract

The invention relates to a method for constructing a deep foundation, in particular to a method for constructing an occlusive in soft soil and a soil layer with a barrier, comprising the following steps of leveling a site, measuring and arranging a pile, constructing a concrete guide wall, constructing a first pile and constructing a second pile, wherein, the first pile and the second pile are occlusive and are arranged in a spacing way, the first pile is cut at the same time of the construction and pore formation of the second pile, and the pore forming techniques of the first pile and the second pile constructions adopt the hard cutting techniques. The method adopts the hard cutting technique, saves the barrier removing and backfilling processes before the pile formation, improves the efficiency, shortens the time limit for a project, overcomes the prejudice that the second pile should be constructed before the first pile prehardens, avoids the potential risk that the pile is formed completely by depending on the retarder effect, and widens the applicable range of the occlusive pile technique. Meanwhile, the occlusive pile constructed by the method has good fending and water stopping effects.

Description

technical field [0001] The invention relates to a deep foundation construction method, in particular to an occlusal pile construction method suitable for soft soil and soil layers with obstacles. Background technique [0002] Traditional occlusal piles are commonly known as "soft method" occlusal piles. The traditional occlusal pile refers to a foundation pit enclosure structure that adopts mechanical grinding, pressing down the casing, grabbing soil in the casing, pouring in-situ concrete, and interlocking (intersecting) the piles. As a foundation pit enclosure structure, it is suitable for soft soil strata, especially for unfavorable strata such as silt, quicksand, rich water, etc. The addition of rotary spraying has the advantages of little disturbance to the formation, strong anti-seepage ability, low cost, small impact on the environment, and fast construction speed. [0003] However, in the traditional occlusal pile formation process, the occlusal failure mainly depe...

AI Technical Summary

Problems solved by technology

[0003] However, in the traditional occlusal pile formation process, the occlusal failure mainly depends on the effect of the concrete super retarder. Once various external factors are interfered, the pile formation time of the second sequence exceeds the retardation time of the retarder, which will lead to the failure of the occlusal pile. , affect the quality of the project, cause various engineering accidents, and bring huge economic losses

Therefore, the traditional occlusal pile construction technology is difficult to implement in areas with many underground obstacles and complex geological conditions.

Moreover, the traditional "soft method" occlusal piles also need to carry out obstacle removal and backfill compaction procedures before pile formation

Images