Segmental assembled concrete frame pier system with self-reset function and method

Abstract

The invention relates to a segmental assembled concrete frame pier system with a self-reset function and a construction method. One end of each longitudinal reinforcing steel bar penetrates through a concrete pier and a reinforcing steel bar corrugated pipe in a prefabricated concrete cover beam to be fixedly connected with the prefabricated concrete cover beam. High-strength mortar is poured into the reinforcing steel bar corrugated pipes. The other end of each longitudinal reinforcing steel bar penetrates through the corresponding concrete pier to be fixedly connected with a pier head reinforcing steel bar on a platform on the bottom face of a cup opening of a concrete bearing platform. A prestress stranded steel wire penetrates through the concrete bearing platforms, the two concrete piers and the prestress reinforcing steel bar corrugated pipes of the prefabricated concrete cover beams. The two ends of the stranded steel wire are fixedly connected with the prefabricated concrete cover beams respectively. Concrete is arranged in cup openings of the concrete bearing platforms in a post-pouring mode. It can be ensured that the reinforcing steel bars have enough holding and wrapping length under the action of earthquake loads so that force can be effectively transferred. Due to the structure, the segmental assembled concrete frame pier system can be suitable for various types of foundations, the earthquake performance of the system can be better than that of a traditional cast-in-place reinforced concrete pier, and the aim of rapid construction is achieved.

Description

technical field [0001] The invention relates to a prestressed concrete frame pier, in particular to a segmentally assembled prestressed concrete frame pier system with self-resetting capability and a construction method. Background technique [0002] The main challenge facing the development of bridge structures at present is that in addition to the safety and durability of the bridge structure, it is also required to maximize the construction quality and environmental protection level, reduce the interference to the existing traffic and the cost during the operation period. Existing bridges have varying degrees of structural defects and functional defects, and the demolition and reconstruction of old bridges face serious interference with existing traffic and the environment. Rapid bridge construction technology needs to be developed for construction platforms and cross-strait bridges constrained by complex climatic conditions, bridges in plateaus and cold areas lacking gra...

AI Technical Summary

Problems solved by technology

[0003] The mainstream of seismic design of bridge piers is based on the principle of capacity design. Under strong earthquakes, large damage and large residual displacement occur in the plastic hinge area, which affects the normal use after the disaster. It is not an ideal seismic strategy.

Images