单层柱面网壳弹塑性地震反应特征  

Elastic-plastic seismic response of single layer cylindrical lattice shells

作　　者：薛素铎[1,2] 曹资[1,2] 王健宁[1,2] 

机构地区：[1]北京工业大学建筑工程学院 [2]北京 100022

出　　处：《地震工程与工程振动》2002年第1期56-60,共5页Earthquake Engineering and Engineering Dynamics

基　　金：北京市自然科学基金项目(8982004);国家自然科学基金重大项目子课题(59895410)

摘　　要：本文对网壳结构的弹塑性抗震性能进行了探讨．根据结构弹塑性有限元理论，结合网壳结构受力特点，推导出网壳结构单元的弹塑性矩阵表达式。然后对单层柱面网壳结构的弹塑性地震反应进行了具体分析，给出了节点位移和杆件应力变化规律，并讨论了矢跨比变化对网壳弹塑性性能的影响、从而揭示出这类网壳的弹塑性地震反应特点。This paper presents a theoretical study on elastic-plastic seismic performance of lattice shells. Using elastic-plastic finite element theory and considering the internal force behavior of structural element, the elastic-plastic stiffness matrix for lattice shell is first derived. Then, the seismic response analysis of a single-layer cylindrical lattice shell is carried out. A detailed analysis is performed to investigate the elastic-plastic performance of the structure under strong ground motions. The elastic-plastic behaviors for nodal displacements and member stresses of the structure are discussed, and the influence of depth-span ratio is also investigated. Finally, the characteristics for elastic-plastic seismic response of lattice shells are obtained.

关 键 词：网壳 弹塑性性能 地震反应 有限元理论 抗震性能 

分 类 号：P315.9[天文地球—地震学] TU352.1[天文地球—固体地球物理学]