建筑结构学报2025，Vol.46Issue(8)：269-281,13.DOI:10.14006/j.jzjgxb.2024.0673
模块化钢结构顶板连接楼盖平面内受力性能试验研究
Experimental investigation on in-plane mechanical behavior of roof-connected diaphragms in modular steel buildings
摘要
Abstract
To investigate the in-plane mechanical behavior of roof-connected diaphragms in modular steel buildings,three diaphragms with different roof connection types were designed and fabricated.In-plane low-cycle loading tests were conducted to study their hysteretic characteristics,load-bearing capacity,displacement ductility,deformation patterns,stiffness degradation,and failure modes.The load-transfer mechanisms of different roof connections were analyzed,and the in-plane mechanical behavior of roof-connected diaphragms was revealed.The results indicate that the bolted cover plate connection can effectively restrain relative deformation between adjacent modules,alleviates damage to horizontal connecting plates at corner column joints,and improves the overall cooperative performance of modular steel buildings.This connection exhibits strong load-transfer capability and significantly enhances the in-plane capacity,ductility,and stiffness of discontinuous diaphragms,although its energy dissipation capacity remains relatively limited.The overall deformation mode of the roof-connected diaphragms presents a typical shear deformation pattern,making it difficult to satisfy the rigid diaphragm assumption.Based on experimental and theoretical analysis,design suggestions and stiffness calculation methods for bolted cover plate connections were proposed,providing a scientific basis for the theoretical study and engineering application of roof-connected diaphragms in modular steel buildings.关键词
模块化钢结构/顶板连接楼盖/平面内受力性能/低周循环加载试验/滞回特性Key words
modular steel building/roof-connected diaphragm/in-plane mechanical behavior/low-cycle loading test/hysteretic characteristic分类
建筑与水利引用本文复制引用
史奉伟,丁阳,宗亮..模块化钢结构顶板连接楼盖平面内受力性能试验研究[J].建筑结构学报,2025,46(8):269-281,13.基金项目
国家自然科学基金项目(51978456),山东省自然科学基金项目(ZR2024QE480),国家资助博士后研究人员计划(GZC20231497),青岛市自然科学基金项目(24-4-4-zrjj-75-jch). （51978456）
