Abstract

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Title:: Seismic Response Analysis of Bamboo-steel Composite Frame Structure Based on Performance of Beam-column Joints

Author(s):: LI Yu-shun; HE Jia-wei; ZHANG Jia-liang; XU Ke-ke; DU Yong-fei; School of Civil Engineering and Environment, Ningbo University

Keywords:: bamboo-steel composite beam column joint; bamboo-steel composite frame; finite element model; seismic wave; seismic performance

Abstract:: In order to study the performance of bamboo-steel composite frame joint which connected bamboo-steel composite column and bamboo-steel composite beam, moment and angle polynomial fitting relationship of semi-rigid joints under different parameters were obtained by quasi-static test. Based on this, the numerical models of six pieces of twolayer bamboo-steel composite frame were built, the finite element analysis under seismic action were carried out, and the influence of joints on the seismic performance of bamboo-steel structure were discussed. In order to fully consider the characteristics of semi-rigid joints, Combin39 nonlinear spring element was used to simulate joint, the maximum displacement and base shear force curves, displacement and base shear time history curves and hysteresis curves of six frames under different situations were studied.The results show that the hysteresis curves of bamboo-steel composite frame is plump, the seismic performance is outstanding, improvements of the bolt strength in the joint and the stiffeners set have obvious influences on improvement of the seismic performance of bamboo-steel frame, the build factors of joints have distinct effects on seismic performance of frame.