Connecting method and structure of socket and embedded steel bar combined prefabricated hollow pier-bearing platform

Abstract

The invention discloses a connecting method and structure of a socket and embedded steel bar combined prefabricated hollow pier-bearing platform. The structure comprises a prefabricated hollow pier column, a prefabricated bearing platform, core filling concrete and a high-performance grouting material; the prefabricated hollow pier column is composed of pier column longitudinal bars, pier column stirrups, small U-shaped bars and large U-shaped bars, and the outer surface of the pier column at the connecting position of the bottom and a socket groove is in a corrugated shape; the prefabricated bearing platform is composed of connecting steel bars, bearing platform stirrups, the socket groove and a steel bar net; the surface of the inner wall of the socket groove is corrugated; and the connecting steel bars are common steel bars, and anchor heads are arranged at the ends. In order to guarantee the connecting strength of the prefabricated hollow pier column and the bearing platform, the structural integrity of the pier column and the bearing platform is enhanced through a socket and spigot joint mode and a pre-embedded connecting steel bar combined connection method. By prefabricating important components such as the bridge pier column and the bearing platform, rapid construction is achieved, the construction quality is guaranteed, meanwhile, the construction progress is accelerated, the socket depth is reduced, the good stress performance of the overall structure is guaranteed, and the requirement for the anti-seismic performance of a bridge is met.

Description

technical field [0001] The invention relates to the field of bridge engineering, in particular to a prefabricated hollow pier-capped connection method and structure suitable for a combination of sockets and pre-embedded steel bars in high-intensity areas. Background technique [0002] With the growth of my country's economic strength, the number and scale of bridge structures in my country have gradually reached the world-class level, and construction technology has also made great progress, but there are still many technical problems that need to be further solved, and the rapid construction technology of bridges in high-intensity areas Exactly one of them. my country is located between the Pacific Rim and the Eurasian seismic belt, and earthquakes occur frequently in the southwest region. Such high-intensity areas have stricter requirements on the construction period, seismic performance, and environmental disturbance of bridge structures. Therefore, bridge construction in ...

AI Technical Summary

Problems solved by technology

The grouting sleeve method requires high construction accuracy, and it needs to be used with caution in high-intensity areas; the grouting metal bellows method requires a long anchorage length of steel bars; a large amount of concrete is poured on-site for the cast-in-place wet joint, and the efficiency is reduced; the traditional socket structure is Factory prefabrication has the advantages of rapid construction, excellent seismic performance, and green construction, but in order to meet the insertion depth requirements, the cap is thick and the cost is high

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