四肢楔形格构式轴心受压构件的计算长度系数  

Calculated length coefficients of four-limb wedge-shaped lattice axial compression members

作　　者：刘庆天 林冰[2] LIU Qingtian;LIN Bing(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Technical Center,China State Construction Engineering Co.,Ltd.,Beijing 101300,China)

机构地区：[1]山东建筑大学土木工程学院,济南250101 [2]中国建筑股份有限公司技术中心,北京101300

出　　处：《计算机辅助工程》2023年第1期65-68,73,共5页Computer Aided Engineering

摘　　要：对于四肢楔形变截面格构式构件,利用Ritz法推导弹性屈曲载荷和计算长度系数公式,与Abaqus软件模拟结果进行对比,探讨构件中间部分等截面长度、两端变截面长度等参数影响。结果表明,推导公式具有良好的精度,结果偏于安全,可为变截面受力构件的工程设计提供参考。For wedge-shaped lattice members with variable cross-section of four-limb,the elastic buckling load and effective length coefficient formula are derived by Ritz method,and compared with the simulation results of Abaqus software,the influence of parameters such as the constant cross-section length of the middle part of the member and the variable cross-section length of both ends of the member is discussed.The results show that the derived formula has good accuracy and the results are safety,which can provide a reference for the engineering design of the variable cross-section stressed members.

关 键 词：计算长度系数 屈曲载荷 格构式 变截面 RITZ法 

分 类 号：TU392[建筑科学—结构工程] TB115.1[理学—数学]