A Construction Method for Reinforcement Treatment of Soft Foundation Steel Pipe Pile in Confined Space

Abstract

The invention discloses a construction method for reinforcement treatment of a soft foundation steel pipe pile in a confined space. By means of the construction method for reinforcement treatment of the soft foundation steel pipe pile in the confined space, construction is easy, convenient and fast. The construction method comprises the following steps of (1) assembly of drilling equipment, (2) drilling operation, (3) cleaning of the steel pipe pile, (4) grouting preparation, (5) grouting operation and (6) forming of the steel pipe pile. By means of the construction method, spatial constraints are avoided, operation is easy and convenient, and secondary disturbance to existing buildings is prevented.

Description

Technical field [0001] The invention relates to the technical field of civil construction, in particular to a construction method for strengthening treatment of soft foundation steel pipe piles in a confined space. Background technique [0002] In engineering construction, soft foundations such as gravel backfill areas and sedimentary layers are often encountered. At present, the conventional treatment methods for steel pipe piles on soft foundations in China are generally large and medium-sized equipment to perform dynamic tamping, hammering, and hydraulic pressure on the steel pipe piles. With limited space and restricted boundary conditions, it is difficult for large and medium-sized equipment to operate, and it is likely to cause secondary disturbance to the original foundation, which will bring disadvantages to the safety and stability of the building itself. Moreover, in soft foundations, steel pipe piles tend to tilt into the ground with low resistance, it is difficult to ...

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Problems solved by technology

[0002] Soft foundations such as gravel backfill areas and sediment layers are often encountered in engineering construction. At present, the conventional treatment methods for steel pipe piles on soft foundations in China are generally large and medium-sized equipment to perform dynamic compaction, hammering, and hydraulic pressure on steel pipe piles. When the site is limited and the boundary conditions are restricted, it is difficult for large and medium-sized equipment and tools to carry out operations, and it is likely to cause secondary disturbances to the original foundation, which will bring unfavorable factors to the safety and stability of the building itself

Moreover, in soft foundations, steel pipe piles tend to incline toward the stratum with low resistance, so it is difficult to control the verticality of steel pipe piles, and the reinforcement effect is not ideal.

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