某展示中心屋盖钢结构参数化建模分析  

Parametric modeling and analysis of steel roof structure of an exhibition center

作　　者：张高明[1] 董卫国 赵鹏飞[1] 宋涛[1] 叶昌杰 马宏睿[1] Zhang Gaoming;Dong Weiguo;Zhao Pengfei;Song Taox;Ye Changjie;Ma Hongrui(China Academy of Building Research,Beijing 100013,China;CITIC General Institute of Architectural Design and Research Co.,Ltd.,WuHan 430010,China)

机构地区：[1]中国建筑科学研究院,北京100013 [2]中信建筑设计研究总院有限公司,湖北武汉430010

出　　处：《建筑科学》2019年第11期1-6,共6页Building Science

摘　　要：某网络安全展示中心的屋盖钢结构采用单层自由曲面网格结构,该网壳结构每个位置的构件截面都是不同的,屋盖结构的这种特性为结构建模计算造成了较大的困难,如果采用箱型截面来模拟构件,将造成较大的模型误差,如果采用人工方式赋予杆件的平均截面属性,工作量较大,为了建立精准的计算模型对该网壳结构进行满足力学要求的设计验算,需采用数学方法编制计算程序来生成每一种不规则截面,共计2400多种截面。在精准计算模型的基础上对该结构进行了包括设计验算、稳定验算和节点有限元分析等一系列验算工作,取得了较好的效果。The roof steel structure of a network security exhibition center adopts single-layer free-form surface mesh structure,the cross sections of the members in each position of the latticed shell structure are different. This characteristic of the roof structure makes it difficult to model and calculate the structure. If the box section is used to simulate the members,it will cause larger model errors. In order to establish a precise calculation model for the design checking calculation of the reticulated shell structure to meet the mechanical requirements,it is necessary to use mathematical method to compile a calculation program to generate each irregular section,totaling more than2400 cross sections. On the basis of the precise calculation model,a series of checking computations including design checking,stability checking and finite element analysis of joints are carried out.

关 键 词：自由曲面 单层网壳 参数化建模 有限元分析 

分 类 号：TU312[建筑科学—结构工程]