三星堆古蜀文化遗址博物馆异形柱的稳定验算研究  

Study on stability analysis for irregular columns in Sanxingdui Museum of Ancient Shu Cultural Relics

作　　者：赖程钢 杨文[1] 朱思其 龙卫国[1] 肖克艰[1] 向新岸[1] LAI Chenggang;YANG Wen;ZHU Siqi;LONG Weiguo;XIAO Kejian;XIANG Xin’an(China Southwest Architectural Design and Research Institute Co.,Ltd.,Chengdu 610042,China)

机构地区：[1]中国建筑西南设计研究院有限公司,成都610042

出　　处：《建筑结构》2025年第1期21-26,共6页Building Structure

摘　　要：以三星堆古蜀文化遗址博物馆变截面异形柱为例,分别采用计算长度系数法和直接分析法进行整体分析设计。提出了适用于变截面异形柱中不同截面的等效计算长度系数取值方法,并将得到的计算长度系数代入等截面稳定公式进行验算。阐述了直接分析法的设计流程,尤其是初始缺陷方向的选取。为验证两种方法的有效性,将计算长度系数法和直接分析法的结果进行了对比,并讨论了两种方法的优缺点。最后利用有限单元法对单根变截面异形柱进行弹塑性失稳分析,探究变截面异形柱失稳特点。结果表明:计算长度系数法与直接分析法的计算结果接近,变截面异形柱的强度和稳定均满足要求,异形柱安全可靠。Taking the variable-section irregular columns of Sanxingdui Museum of Ancient Shu Cultural Relics as an example,the overall analysis and design were carried out by using effective length ratio method and direct analysis method respectively.A method for calculating the equivalent effective length ratio method of different sections in variable-section irregular columns was proposed,and the obtained effective length ratio was brought into the equal section stability formula for verification.The design process of direct analysis method was introduced,especially the selection of the initial defect direction.In order to verify the effectiveness of the above two methods,the results of effective length ratio method and direct analysis method were compared,and the advantages and disadvantages of the two methods were discussed.Finally,the finite element method was used to analyze the elastoplastic instability of a single variable-section irregular column,and the instability characteristics of variable-section irregular columns were explored.The results show that the calculation results of effective length ratio method and direct analysis method are closed,and the strength and stability of variable-section irregular columns meet the requirements,and irregular columns are safe and reliable.

关 键 词：三星堆古蜀文化遗址博物馆 变截面异形柱 直接分析法 计算长度系数法 弹塑性失稳 初始缺陷 

分 类 号：TU393[建筑科学—结构工程]