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.
出处
《地震工程与工程振动》
CSCD
北大核心
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)
