中文摘要：

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．

英文摘要：

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.