For the cylindrical intersecting-latticed-three-dimensional-beams-system (ILTDBS) reticulated mega-structure with double-layer plane-plate grid substructures, the configuration, form parameters, the support styles of the main structure, and the support ways of the substructures on the main structure are analyzed firstly in this paper. Then the geometrically nonlinear mechanical model and corresponding stability analysis procedure are developed, and the structural stability including buckling modes, ultimate loads under different kinds of conditions and a series of parametric analyses are researched. Moreover, the general failure conditions of the structure are discussed. Finally the basic static properties of the structure are investigated, and a series of parametric analyses with respect to static properties of the structure are performed. All this work will provide theoretical guidance to the actual engineering application of this structure. © 2007 Elsevier Ltd. All rights reserved.

This paper is focused on the research of seismic response of cylindrical latticed-intersectedthree-dimensional-beam-system (LITDBS) reticulated mega-structure with double-layers plane-plate grid sub-structures using response spectrum technique. The distribution law of dynamic internal forces of members in this new structure is researched firstly. Reasonable number of vibration modes recommended for use is discussed. Seismic behaviors of the structure under different directional seismic loads are analyzed; therefore the reasonable required components of seismic loads for seismic design are obtained. A series of geometrical parameters analysis are carried out at last. All the works will provide guides in theory for the use of this structure.

针对子结构为单层膜型网壳的圆柱面交叉立体桁架系巨型网格结构，分析了结构的构成、形体参数，建立了几何非线性力学模型，编制了相应的稳定分析程序。着重研究了整个结构的稳定性能、失稳形式（局部失稳与整体失稳） 、局部失稳与整体失稳模态等，就不同的失稳形式进行了一系列的参数分析，研究了各参数对结构的失稳形式及极限载荷的影响，找出了不同跨度结构在整体与局部失稳临界状态某些参数的取值规律。

本文针对子结构为单层叉筒网壳的圆柱面交叉立体桁架系巨型网格结构，分析了结构的构成、形体参数、支承方式等；建立了几何非线性力学模型，编制了相应的稳定分析程序；针对本结构的特点，着重研究了结构的稳定性能、失稳形式（局部失稳与整体失稳），以参数分析的形式研究了结构局部失稳与整体失稳的关系，找出了不同跨度结构在整体与局部失稳临界状态某些参数的取值规律，并给出了整体与局部失稳状态的分界曲线，可为该结构形式的工程应用提供参考。

面杆系巨型网格结构由主体结构与子结构两级组成主体结构为由组合杆构成的大网格结构，子结构为普通网架结构，布置于主体结构的大网格中。文中就其子结构的布置、组合杆的计算、结构整体优化计算方法进行了分析，并对几种巨型结构形式与普通双层网壳就用钢量方面进行了对比分析，提出了巨型网格结构的实用跨度范围。