Seismic performance of precast bridge columns connected with grouted corrugated-metal duct through biaxial quasi-static experiment and modeling  

作　　者：Xia Zhanghua Lin Shangshun He Yongbo Ge Jiping Sun Jinlei 

机构地区：[1]Department of Civil Engineering,Fuzhou University,Fuzhou 350116,China [2]Department of Civil Engineering,Fujian University of Technology,Fuzhou 350116,China [3]Department of Civil Engineering,Shanghai Institute of Technology,Shanghai 201418,China

出　　处：《Earthquake Engineering and Engineering Vibration》2021年第3期747-770,共24页地震工程与工程振动（英文刊）

基　　金：National Natural Science Foundation of China under Grant No.51408360;the Natural Science Foundation of Fujian(NSFF)under Grant No.2020J01477;the Technology Project of Fuzhou Science and Technology Bureau(TPFB)under Grant No.2020-GX-18。

摘　　要：In this paper,the seismic behaviors of precast bridge columns connected with grouted corrugated-metal duct(GCMD)were investigated through the biaxial quasi-static experiment and numerical simulation.With a geometric scale ratio of 1:5,five specimens were fabricated,including four precast bridge columns connected with GCMD and one cast-in-place(CIP)bridge column.A finite element analysis model was also established by using OpenSees and was then calibrated by using the experimental results for parameter analysis.The results show the biaxial seismic performance of the precast bridge columns connected with GCMD was similar to the CIP bridge columns regarding ultimate bearing capacity and hysteresis energy,and further,that it could meet the design goal of equivalent performance.The seismic performance of the precast bridge columns connected with GCMD deteriorated more significantly under bi-directional load than under uni-directional load.A proper slenderness ratio(e.g.,7.0-10.0)and longitudinal reinforcement ratio could significantly improve the energy dissipation capacity and deformation capacity of the precast bridge columns,while the axial load ratio and concrete strength had little influence on the above properties.The research results could bring insights to the development of the seismic design of precast bridge columns connected with GCMD.

关 键 词：precast bridge column cast-in-place column grouted corrugated-metal duct connection biaxial quasi-static test seismic performance hysteresis energy 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]