铰支构件受压试验中支座刚度对试验结果的影响分析  

Analysis on the Influence of Hinged Support Stiffness to Test Results in Compression Tests

作　　者：韩川[1] 

机构地区：[1]同济大学建筑工程系,上海200092

出　　处：《佳木斯大学学报（自然科学版）》2013年第4期522-525,共4页Journal of Jiamusi University：Natural Science Edition

摘　　要：受压试验中常用铰支座来模拟理想铰接的边界条件,由于铰支座与构件刚度不同,导致实际试验为不等刚度杆件加载.本文旨在对比等刚度模型与两端不等刚度模型的极限承载力和变形.先从理论方面进行了初步分析与预测,然后用数值的方法进行求解,印证了理论分析的正确性.结果表明上下支座处的支座刚度对构件的整体稳定性力学性能没有明显影响.Hinged support is frequently used in compression tests to simulate the condition of ideal hinge.However,the actual stiffness of test member is variation due to the unequal stiffness of hinged support.The purpose of this passage is to make a comparison between constant stiffness and variable stiffness models on ultimate bearing capacity and deformation.First,preliminary analysis and forecast were conducted using theoretical method.Then using numerical method,relevant data was obtained to confirm the theoretical analysis.It is shown that the unequal stiffness of supports doesn＇t have much effect on the global stability of test member.

关 键 词：受压试验 钢构件 铰支座 不等刚度模型 

分 类 号：TU311[建筑科学—结构工程]