玻璃纤维增强短钢管构件轴压试验和破坏模式仿真研究  

EXPERIMENTAL AND SIMULATION STUDIES OF FAILURE MODES OF GFRP-REINFORCED SHORT STEEL TUBES UNDER AXIALLY COMPRESSIVE LOADS

作　　者：武启剑 王臣[1,2] 支旭东[1,2] WU Qi-jian;WANG Chen;ZHI Xu-dong(Key Laboratory of Structural Engineering Disaster Control of Education Ministry,Harbin Institute of Technology,Harbin 150090,China;Key Laboratory of Civil Engineering Intelligent Disaster Prevention and Mitigation Control of Ministry of Industry and Information,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]哈尔滨工业大学结构工程灾变与控制教育部重点实验室,哈尔滨150090 [2]哈尔滨工业大学土木工程智能防灾减灾工信部重点实验室,哈尔滨150090

出　　处：《工程力学》2018年第8期184-191,共8页Engineering Mechanics

基　　金：国家自然科学基金项目(51478144)

摘　　要：该文采用试验和数值仿真手段,对缠绕成型玻璃/环氧复合材料(GFRP)增强薄壁圆钢管短柱在轴压荷载作用下的承载能力及破坏特点进行研究,讨论是否缠绕GFRP、径厚比、试件长度以及GFRP缠绕角度(圆管试件轴向到纤维纵向的角度)等因素对试件承载能力的影响。提出较为准确的复合构件数值仿真方法,采用ABAQUS的Explicit求解器并考虑GFRP的Hashin失效准则和GFRP与钢管之间的界面脱粘等因素,获得的模拟结果与试验现象吻合良好。在此基础上,对短管构件在不同GFRP体积率(GFRP体积/构件总体积)下的性能进行分析,获得了GFRP体积率对构件承载力的影响。The bearing capacity and damage features of glass fiber reinforced epoxy resin(GFRP)reinforced thin-walled circular short steel tubes under axially compressive loads were studied using both experimental and numerical methods.The effects of diameter-thickness ratio,specimen’s length and winding angle(the angle between the axis of the tube and the tangential direction of the winding fiber)on specimens’bearing capacity were studied.In the simulation,the explicit solver of ABAQUS was chosen.Moreover the GFRP’s Hashin Failure criterion and the interfacial debond between GFRP and the steel tube were considered.The simulation results agreed well with experiment results.The influence of volume fraction of GFRP(the volume of GFRP/the total volume of component)to specimens’bearing capacity was analyzed.

关 键 词：结构工程 强度 轴压试验 GFRP 钢管 

分 类 号：TU398.9[建筑科学—结构工程]