Research On Bearing Capacity Of Prestressed Concrete Pipe Pile Foundation Of A Highway Bridg In Guang Dong

Prestressed concrete pipe pile(Referred to as pipe pile) is a single pile with high bearing capacity,wide range of application,wide variety of standard length,low cost,high efficiency of construction,high penetration,reliable and so on;The relevant standard system of pipe pile is basically complete,the advanced production technology,perfect equipment,testing,quality and reliable;The pipe pile has good durability,mature construction technology,reliable quality,good economic performance,strong applicability,and has been applied to many important projects,fully embodies the characteristics of its high security.At present,the application of pipe pile in bridge engineering is not widely used,there is a gap in the specification,but with the continuous development of technology in recent years,its reliability and durability have greatly improved.In bridge engineering, the technology conditions are becoming more and more mature. In this paper, based on a highway bridge pile foundation of guangdong province, to carry out the calculation of vertical bearing capacity of the highway bridge pile foundation research work.This paper collects and analyzes a large amount of data,starting from the stress characteristics of prestressed pipe pile foundation, Based on the characteristics of highway bridge foundation,the failure mode and mechanism of pipe pile are studied and discussed;On the basis of the research and analysis of the relevant calculation theory of the prestressed concrete pipe pile at home and abroad,combining with the field test,the bearing capacity of the concrete is analyzed and studied;According to the results of field test and theoretical calculation,the main factors affecting the bearing capacity are analyzed,and the method of determining the bearing capacity is determined. Determine the cater for the actual construction of highway bridge precision test method,Clear more reasonable method to calculate the vertical bearing capacity of highway bridge specification,To verify the numerical simulation analysis method for highway bridge calculation and analysis of the vertical bearing capacity of pile foundation is feasible.