Application of prestressed concrete pipe pile planting technology in complex foundation

Abstract

The invention discloses application of a prestressed concrete pipe pile planting technology in a complex foundation. The application comprises the following steps that S1, sweeping is carried out, specifically, the interior of a pile driving area is leveled through a leveling machine, then the leveled land is swept through a sweeping machine, obstacles on the ground and underground are cleared away, and smooth drainage is guaranteed. The application can be applied to soil layers except for karst geological sections. The invention discloses application of the prestressed concrete pipe pile planting technology in the complex foundation, aiming at the characteristic that a prestressed concrete pipe pile is not suitable for hard areas but suitable for soft areas, the construction technology of the prestressed concrete pipe pile which must adopt a pile foundation type in design can be improved by trying to adopt the pile planting method technology, the construction period can be greatly shortened, project investment is saved, pile foundation quality detection is convenient, the civilized construction degree is high, the application is greatly different from a traditional small hole guiding technology, the success rate is high, and the application is worthy of application and popularization.

Description

technical field [0001] The invention relates to the field of pile planting technology, in particular to the application of prestressed concrete pipe pile planting technology in complex foundations. Background technique [0002] PHC pipe piles, that is, prestressed high-strength concrete pipe piles, are made of hollow cylindrical concrete by adopting pre-tensioned prestressed centrifugal forming technology and undergoing steam curing at 10 atmospheres (about 1.0Mpa) and 180 °C. Prefabricated components, the standard section length is 10m, the diameter is from 300mm to 800mm, the concrete strength grade is ≥C80, and the single pile bearing capacity is high. Due to the high concrete strength of the PHC pipe pile body, it can be driven into dense sand layers and strong weathered rock layers. Under the action of pressure, the bearing capacity of the pile tip can be increased by 70% to 80% compared with the original soil quality, and the frictional resistance of the pile side can ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides the application of the prestressed concrete pipe pile technology in complex foundations, which solves the problem that the traditional pile technology does not use complex terrain, and can effectively solve the problems in the background technology

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