Prefabricated assembled pier seismic structure with built-in replaceable viscous damper and energy-dissipating steel bars and its construction method

Abstract

The invention discloses a seismic structure of a prefabricated spliced pier internally provided with replaceable viscous damper and energy-consuming reinforcing steel bars and a construction method thereof. The seismic structure of the pier comprises a prefabricated concrete pier stud section provided with a '['-shaped groove a, a double-wall steel sleeve for embedding the upper and lower portionsof the prefabricated concrete pier stud section, a positioning reinforcing steel bar for positioning the pier section, the viscous damper mounted in the '['-shaped groove a and the energy-consuming reinforcing steel bars. The viscous damper and the energy-consuming reinforcing steel bars play a role of a safe air bag in the structure, and have relatively high energy-dissipating capacity under theaction of an earthquake. The viscous damper and the energy-consuming reinforcing steel bars also play a role of a fuse and are centralized positions of seismic damage and can be replaced. By adoptingthe seismic structure, the seismic performance of the prefabricated spliced pier can be improved and meanwhile, the damaged pier can be also quickly repaired.

Description

technical field [0001] The invention belongs to the fields of civil engineering, construction engineering, highway engineering and municipal engineering, and relates to a prefabricated and assembled pier anti-seismic structure with a built-in replaceable viscous damper and energy-dissipating steel bars and a construction method thereof. Background technique [0002] Segmentally assembled prefabricated concrete piers have the advantages of fast construction, reliable quality, little impact on the environment, and little impact on traffic. application. This type of bridge pier divides the pier body into several sections vertically, the longitudinally stressed steel bars are disconnected between the sections, and the sections are connected by dry joints, or filled with epoxy resin, and post-tensioned. connect the segments into a whole. Scholars at home and abroad have found through experiments and theoretical research that prefabricated bridge piers have poor integrity and se...

AI Technical Summary

Problems solved by technology

[0008] To sum up, in the existing anti-seismic and energy-dissipating technologies of prefabricated assembled bridge piers, most of the energy-dissipating steel bars are embedded in the concrete and cannot be replaced, and most of the viscous dampers are externally installed. The applicable position is completely different from the structure of the present invention

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