模块化钢结构剪力键双层灌浆连接的轴向力学性能OA
Axial mechanical properties of shear key double-layer grouting connection in modular steel structure
模块化钢结构作为一种高效、环保、可持续的建造方式,其单元间的连接将直接影响结构的整体稳定性和抗震性能.模块化钢结构中常见的焊接、螺栓连接和预应力连接等连接方式,存在施工效率低下、安装误差敏感、作业空间受限等问题.对此,本文提出了一种新型剪力键双层灌浆连接,可适用于模块化钢结构的角柱节点、边柱节点和中柱节点.为了评估新型连接的轴向力学性能,本研究制作了 8个连接试件进行推出试验,探究了剪力键间距、灌浆料强度、连接长度、灌浆层数对试件破坏形态、受拉承载力和应变分布的影响.基于理论分析,推导了剪力键双层灌浆连接的受拉承载力计算公式,通过与试验结果进行对比,验证了其有效性和精确度,可为该新型连接在模块化钢结构中的工程应用提供理论依据.
Modular steel structures as an efficient,environmentally friendly,and sustainable construction method,and the connection between the units will directly affect the overall stability and seismic performance of the structure.However,the common connection methods in modular steel structures,such as welding,bolted connections,and prestressed connections,exhibit several challenges including low construction efficiency,susceptibility to installation errors,and limited working space.In this paper,a novel shear key double-layer grouting connection is proposed,which has good applicability to corner column joints,side column joints and middle column joints of modular steel structures.In order to evaluate the axial mechanical properties of the novel connection,8 connection specimens were produced for push-out tests,and the effects of shear key spacing,grout strength,connection length and number of grout layers on the failure forms,tensile capacity and strain distribution of the specimens were investigated.Based on the theoretical analysis,the formula for calculating the tensile capacity of the shear key double-layer grouting connection is derived.The effectiveness and accuracy of the formula are verified by comparing with the test results,which can provide a theoretical basis for the engineering application of the novel connection in the modular steel structure.
白久林;杨季;梁天龙;刘宜丰;金双双;邓世斌
重庆大学山地城镇建设与新技术教育部重点实验室,重庆,400045||重庆大学土木工程学院,重庆,400045重庆大学山地城镇建设与新技术教育部重点实验室,重庆,400045||重庆大学土木工程学院,重庆,400045重庆大学土木工程学院,重庆,400045||中国市政工程中南设计研究总院有限公司,湖北武汉,430000中国建筑西南设计研究院有限公司,四川成都,610042重庆交通大学土木工程学院,重庆,400074中国建筑西南设计研究院有限公司,四川成都,610042
建筑与水利
模块化建筑钢结构剪力键双层灌浆连接推出试验受拉承载力提升
modular constructionsteel structuresshear keydouble-layer grouting connectionspush-out teststensile capacity improvement
《湖南大学学报（自然科学版）》 2026 (1)
31-41,11
国家自然科学基金资助项目(52378481),National Natural Science Foundation of China(52378481)重庆市自然科学基金创新发展联合基金资助项目(CSTB2022NSCQ-LZX0047),Chongqing Natural Science Foundation Innovation and Development Joint Fund(CSTB2022NSCQ-LZX0047)
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