Novel combined pile foundation structure suitable for integral bridge and construction method thereof

Abstract

The invention relates to a novel combined pile foundation structure suitable for an integral bridge and a construction method thereof. Mainly aiming to solve the problems that the deformation capability of a traditional common concrete pile foundation cannot met the requirements of the integral bridge, the novel combined pile foundation structure is capable of meeting the requirements of the deformation capability of the integral bridge as well as ensuring the stress performance of the integral bridge. The novel combined pile foundation structure mainly comprises a cylindrical concrete pile body, wherein a reinforcement cage is arranged inside the concrete pile body, a mounting hole is formed in the middle of the top surface of the concrete pile body, a prefabricated protection cylinder isarranged inside the mounting hole, a steel bar is vertically arranged in the middle of the prefabricated protection cylinder, the upper end of the steel bar extends out of the mounting hole and is used for being inserted into an abutment, the lower end of the steel bar is inserted into the concrete pile body, and elastic materials fill the portion between the steel bar and the side wall of the prefabricated protection cylinder to ensure the deformation requirements. According to the novel combined pile foundation structure, the structural design is simple and reasonable, the prefabricated protection cylinder, the steel bar and the elastic materials are utilized to form a deformation assembly, so that the stress deformation performance of a pile foundation is obviously improved without reducing the bearing capacity of the integral bridge pile foundation.

Description

Technical field: [0001] The invention relates to a novel combined pile foundation structure suitable for an integral bridge and a construction method thereof. Background technique: [0002] As the age of the bridge grows, the diseases of the bridge will become more and more prominent, and maintenance and renewal will account for an increasing proportion of the overall construction cost. The expansion device of the bridge is directly exposed to the atmosphere, and it is inevitably corroded by precipitation, dust, debris and heavy traffic impacts, resulting in a very harsh environment for its use. The problems caused by the damage or partial failure of the expansion device are very serious, and it is the most vulnerable part of the bridge to be repaired or replaced. In order to solve the shortcomings of the traditional jointed bridge expansion joints, the whole bridge was born in operation, but for the seamless bridge, it mainly bears the expansion and contraction deformation of t...

AI Technical Summary

Problems solved by technology

Due to our national conditions and construction habits, concrete pile foundations are widely used in our country, but in the overall bridge deformation, concrete pile foundations are easy to crack and crush

Images