中文摘要：

以PBL剪力连接件群传力机理试验模型为研究对象,采用所建立的荷载-滑移变形协调理论模型及其求解方法对PBL剪力连接件群的传力机理及其极限承载力进行研究。通过与试验结果及三维非线性仿真分析结果的对比进一步验证求解方法的有效性。对PBL剪力连接件群传力机理及其极限承载力的系统研究表明：其荷载传递过程实质上是外荷载作用下钢构件、混凝土构件及各层PBL剪力连接件的刚度、变形及荷载的协调过程,三者耦合影响并共同决定剪力连接件群的传力机理及其极限承载力。鉴于PBL剪力连接件群传力机理及其极限承载力的复杂性,就钢构件、混凝土构件以及PBL剪力连接件等关键影响因素及其效应进行研究,在此基础上对于PBL剪力连接件群的设计理念和设计方法进行探讨,指出PBL剪力连接件群设计需注意的问题及需考虑的主要因素。

英文摘要：

Model tests of PBL shear connector groups are conducted to study the load transmission mechanism and capacity of a PBL shear connector group using a load-slip deformation compatibility theoretical model and a corresponding analytical method.The theoretical model and analytical method presented are further demonstrated by comparing the results of 3-D nonlinear finite element analysis and the model experiments.It is shown that the load transmission of PBL shear connector is essentially a load and deformation compatibility process of the steel and concrete components and the layers of PBL shear connector group.Steel component,concrete component and PBL shear connector group are coupled,and the load transmission mechanism and load capacity of the PBL shear connector group is governed by all these three factors.The key influencing factors,such as steel component,concrete component and PBL shear connector,and the corresponding effect of load transfer mechanism and load capacity of the PBL shear connector group are studied.The design concept and design method for PBL shear connector groups are discussed.