板式模块化钢结构节点抗震性能试验研究

为研究板式模块化钢结构节点抗震性能，开展了4个足尺边节点试件的低周往复荷载试验.基于实测的荷载-位移数据评估了节点的滞回、承载、变形及耗能能力，分析了不同变量下的节点失效模式及抗震性能指标.研究结果表明:失效模式有柱壁板鼓曲、连接件变形和梁翼缘局部屈曲3种；CT2，CT3，CT4试件的滞回曲线呈饱满梭形，最大等效黏滞阻尼系数达0.21~0.25，极限层间位移角达0.07~0.09rad，节点表现出良好的抗震性能及转动能力；核心区柱壁厚度和角钢厚度对节点抗震性能影响显著，柱竖向拼接方式对节点滞回性能和初始抗弯刚度影响显著.研究结果为板式模块化钢结构节点工程应用提供技术支撑.

Experimental Study on Seismic Performance of Joint in Panelised Modular Steel Structure

Pseudo static tests of four full-scale edge joint specimens are implemented to study the seismic performance of joint in panelised modular steel structure. The hysteretic behavior， bearing capacity， deformation and energy dissipation capacity of joints are evaluated based on the measured load-displacement data. Furthermore， the failure modes and the effect of different variables on seismic performance of joint are analyzed. The test results show that failure modes of the joint include column wall bulge， connector deformation and beam flange local buckling. The hysteresis curves of CT2， CT3 and CT4 exhibit plump shuttle shape， the maximum equivalent viscous damping coefficients are 0.21~0.25， the ultimate storey drift angle reaches 0.07~0.09rad， indicating the joint has excellent seismic performance and rotation capacity. Thickness of column wall in panel zone and angle steels would affect the seismic performance of joint significantly， vertical-splicing bolt type has a remarkable effect on the hysteretic performance and initial flexural stiffness of joint. The results provide technical support for the engineering application of the joint in panelised modular steel structure.