基于多尺度方法的钢结构停车库破坏机理  

The Damage Mechanism of Steel Garages Based on Multi-scale Method

作　　者：王卫永[1] 张永亮 秦凤江[1] 贺拥军[2] WANG Weiyong;ZHANG Yongliang;QIN Fengjiang;HE Yongjun(College of Civil Engineering,Chongqing University,Chongqing 400045,China;College of Civil Engineering,Hunan University,Changsha 410082,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]湖南大学土木工程学院,长沙410082

出　　处：《建筑钢结构进展》2020年第3期105-113,120,共10页Progress in Steel Building Structures

基　　金：“十三五”国家重点研发计划(2016YFC0701202)。

摘　　要：为了利用最小的计算代价得到钢结构外伸端板节点准确的局部分析结果和钢结构停车库的整体结构性能,引入了基于8节点六面体单元界面约束方程的多尺度有限元计算方法,从而使精细的微观单元模型可以同宏观单元模型实现不同尺度间的变形协调。通过算例验证了基于有限元软件ABAQUS建立的多尺度有限元模型和计算结果的准确性。采用多尺度方法分析了外伸端板节点连接的钢结构停车库的破坏机理,给出了由应变能判定钢结构停车库的失效准则。In order to obtain accurate local analysis results of extended end-plate joints in steel structures and global capacity of steel garages by paying lowest cost in calculation,multi-scale finite element calculation method is applied based on restrained functions of eight-node hexahedron element.Therefore,the deformation consistency in different scales is achieved between refined microscopic element model and macroscopic element model.The accuracy of the established multi-scale element model and analysis results is validated by an example based on finite element software ABAQUS.The damage mechanism of steel garages connected by extended end-plate joints is analyzed by employing multi-scale method,and a failure criterion using strain energy is proposed for steel garages.

关 键 词：多尺度方法 外伸端板节点 钢结构停车库 破坏机理 应变能 失效准则 

分 类 号：TU312[建筑科学—结构工程]