异形温室结构的空间有限元分析  

Spatial finite element analysis of heteromorphous greenhouse

作　　者：李成志[1] 梁宗敏[1] 剧锦三[1] 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083

出　　处：《中国农业大学学报》2007年第2期84-87,共4页Journal of China Agricultural University

基　　金：国家重大科技项目(2002BA906A17-3)

摘　　要：为了给空间索杆单元杂交结构的温室提供设计依据,以异形结构温室为例,利用大型有限元分析软件ANSYS10.0对该温室结构进行了静力线性有限元分析。计算得到3种荷载工况下结构主要构件的应力和最大挠度值:上弦杆σmax=170 MPa,ωmax=26 mm;下弦杆σmax=42.5 MPa,ωmax=20 mm;立柱σmax=29.3 MPa,ωmax=20mm;环梁σmax=55.3 MPa,ωmax=20 mm;檩条σmax=72.6 MPa,ωmax=26 mm。应力和变形结果均满足结构强度要求。该有限元分析方法可以推广到类似的温室结构的空间索杆单元杂交结构。In order to provide the basis for designing a greenhouses of cable-truss, an example of the heteromorphous structural greenhouses is given in this paper. The static linear analysis was carried out for the structure by the finite element software ANSYS10.0. The results of the main components＇ stress and deformation are 170 Mpa and 26 mm, respectively, for the upper pole; 42.5 Mpa and 20 mm for the nether pole; 29.3 Mpa and 20 mm for the pillar; 55.3 Mpa and 20 mm for the circum-girder; and 72.6 Mpa and 26 mm for the purline. The results show that the deformation and stress meet the demand of the structural strength, This method can be popularized to a greenhouses of cable-truss and is feasible and effective.

关 键 词：索杆单元 异型温室 ANSYS静力线性分析 有限元分析 空间钢结构 

分 类 号：TU312.2[建筑科学—结构工程]