Prestressed concrete pipe pile with pretensioning type strands

Abstract

Pretensioning steel strand wire concrete tubular pile consists of annular tubular concrete pile body and end plate. Inside the tubular concrete pile body there equips steel bar framework. The prestressing force main reinforcement in the steel bar framework is steel strand wire, whose end crosses the stretching hole at the end to produce anchor. The screwy reinforcement helically encircles to fix prestressing force main reinforcement and set-up reinforcement as a whole. Because the quality of steel strand wire material is steady, it can not only insure the quality of the high strength prestressing force concrete tubular pile, but also the pile is provided with the advantages of high material strength, strong prestressing force, high bending strength and good carrying capability.

Description

technical field [0001] The invention belongs to the pile foundation engineering technology in the construction field, and relates to a pretensioned steel hinge line prestressed concrete pipe pile. Background technique [0002] Building foundation engineering is the foundation of buildings, and pile foundations have become a widely used foundation form for building various buildings in areas with poor soil quality, especially high-rise buildings, heavy factory buildings and structures with special requirements. The quality of the pile directly affects the quality of the pile foundation. It is not uncommon for major brewing accidents to occur because the quality of the pile foundation does not meet the requirements. At present, in my country's coastal cities, prestressed concrete pipe piles are most commonly used in construction of industrial plants, civil buildings, bridges, power stations, docks, warehouses and other buildings. The main bars of the existing pretensioned pre...

AI Technical Summary

Problems solved by technology

The main bars of the existing pretensioned prestressed concrete pipe piles are all made of steel rods. Because the quality of the steel rods is not stable enough, it is easy to cause brittle fracture. Moreover, the steel rods are anchored by the heading technology, which has a strong impact on the steel rods. The performance of the rod will be greatly affected, which will reduce the mechanical performance index of the steel rod, which will seriously affect the construction quality and service life of the building.

There is also a prestressed concrete pipe pile whose skeleton main reinforcement uses steel wire to replace the traditional steel rod. Although it can save a lot of steel and concrete, its strength is far from meeting the quality requirements. cause and leave serious accident hazards

Images