摘要
索网张力结构是一种预应力自平衡结构体系,具有静不定、动不定特征.初始预应力分布计算是张力结构受力分析的基础.文中从力密度法基本方程出发,采用线性调整理论,建立了一种新的张力结构初始预应力分布计算方法,并将这一方法运用于马鞍型单层索网体系初始预应力分布的求解,在此基础上分析了不同预应力水平对体系自振特性、静力承载力的影响.最后,对该体系的结构特性进行了分析.
The tensile cable-net structure is a self-equilibrium pre-stress system with static and kinematic indeterminations. The calculation of the initial pre-stress is the basis for the loading analysis of the structure. In this paper, a new calculation method of the initial pretress of tensile cable-net structure is developed based on the basic formulae of the force density method as well as on the linear adjustment theory. The proposed method is then used to analyze the initial pre-stress distribution of a particular single-layer saddle-shaped cable-net structure, and the effect of the pre-stress on the self-vibration and static load of the structure are analyzed. Finally, the structural performances of the cable-net system are investigated.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第6期25-29,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(10102010)
关键词
线性调整理论
索网结构
张力
初始预应力
单层马鞍型索网
结构特性
linear adjustment theory
cable-net structure
tension
initial pre-stress
single-layer saddle-shaped cable-net
structural performance
