多次预应力钢网壳屋盖结构的设计研究与工程实践

Design, Research and Engineering Practice of Multi-Prestressed Steel Lattice Shell Roof Structure

本文对大跨度空间屋盖提出了一种多次预应力钢网壳结构新体系。通过工程实例阐述了设计思想及其原理；用不同模型对网壳进行了静力、动力和整体稳定性的分析研究。实践表明，对大跨、重载的钢同壳结构施加预应力．是改善其受力性能、提高承载能力、增强整体刚度、降低钢材耗量的有效手段和带方向性的新技术，值得进一步研究推广。本文可供设计类似工程时参考。

This paper puts forward a new system of multi-prestressed steel lattice shell structure for large span space roof. The idea of design and its 'principles are elaborated through engineering examples. The analysis and study of static, dynamic and integral stability are made for lattice shells of various models. The practice has shown that applying prestress to large span and heavily loaded steel lattice shell structure is an effective way and directive new technology to improve its performance, can raise the load bearing ability, strengthen integral ridigity and reduce the steel consumption. This paper may serve as a reference to future similar projects.