某框架结构楼板承受超大荷载型钢加固效果分析  

Analysis on the reinforcement effect of steel beams on the floor of a frame structure subjected to superlarge loads

作　　者：王培江 赵建昌[1] Wang Pei-jiang;Zhao Jian-chang(College of Civil Engineering,Lanzhou Jiaotong University,Lanhou 730070,China)

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《工程抗震与加固改造》2021年第3期131-137,共7页Earthquake Resistant Engineering and Retrofitting

摘　　要：以兰州市某水育早教中心为例,介绍了框架结构楼板在承受超大荷载情况下采用型钢加固的方法,并以其中一榀单层单跨框架为例,采用通用有限元软件ABAQUS对加固前后结构进行对比分析,在分级加载的情况下,分析加固后框架结构楼板和加固型钢的变形、内力及破坏特点。理论分析结果表明:加固后框架结构楼板的承载力提高了约1.55倍,楼板挠度大幅度的减小,结构的刚度、延性均有提高,说明此加固方法可行。Taking the development center for a water birth in lanzhou city as an example,the steel reinforcement,method of the frame structure floor big loads is introduced and in one of the common single single span as an example,the general finite element software ABAQUS is adopted to reinforce the structure before and after the comparative analysis.In the case of a hierarchical loads,the deformation,internal force and failure characteristics of the floor slab and reinforced section steel of the frame structure after reinforce ent.The theoretical analysis results show that the bearing capacity of the floor slab of the frame structure is increased by about 1.55 times after the reinforcement,the floor deflection is greatly reduced,and the stiffness and ductility of the structure are improved,indicating that the reinforcement method is feasible.

关 键 词：型钢加固 楼板 分级加载 数值分析 

分 类 号：TU375.4[建筑科学—结构工程]