董石麟
    (浙江大学土木系 杭州 310027)

[提要]  叙述了我国网架结构应用与发展中的基本情况，特别评论了在网架发展和开拓中的一些新技术，如组合网架、三层网架、预应力网架、斜拉网架等新型网架结构，拟夹层板法、下弦内力法、等代空间桁架位移法等网架结构分析方法，以及若干新型网架节点等。同时，文中还介绍了一些工程实例。
[关键词]  网架结构 新技术 组合网架  三层网架  预应力网架  斜拉网架  拟夹层板法 下弦内力法 等代空间桁架位移法 新节点

This paper briefly describes the general situation in application and development of space truss in China and specially gives a detailed review of the new techniques and structures in development of space truss, such as composite grid, triple-layer grid, prestressed grid and cable-stayed grid, as well as method of sand which plate analogy, bottom chord internal force method, equivalent space truss displacement method and several new joints of space truss. In addition, a lot of important examples are introduced.
Keywords: space truss; new techniques; composite grid; triple-layer grid; prestressed grid; cable-stayed grid; method of sandwich plate analogy; bottom chord internal force method; equivalent space tru.ss displacement emthod; new joint