网壳结构稳定性研究

对网壳结构稳定性问题的国内外研究现状、研究方法和目前已取得的成果做了介绍，并结合对网壳结构稳定性的分析，提出了今后的研究方向。     

弗留盖圆筒壳理论的广义变分原理

弹性力学广义变分原理是弹性力学体系的重要组成部分。证明了基于精确的弗留盖弹性圆筒壳理论广义变分原理的正确性。     

A study of elastic-plastic buckling of cylindrical shells under torsion

The elastic-plastic buckling of cylindrical shells under torsion is analysed with a deep thick-shell model under various boundary conditions. The word ‘deep’ means that in the general equations of equilibrium the three non-linear terms that involve the torsional force are all retained for the buckling analysis. In the Donnell-type shallow-shell theory, however, only one of such terms is retained. The word ‘thick’ means that in calculating strains and stress resultants the factor (1+z/R) is retained. This factor results from the trapezoid-like shape of the cross-section and is usually neglected in the thin-shell theory. For boundary conditions, not only the conventional geometrical boundary conditions, which are in terms of displacements and rotations, but also the mechanical boundary conditions, which are in terms of forces and moments, are considered. The numerical results of examples assess the effect of the additional non-linear terms, the effect of the factor (1+z/R), and the effect of the mechanical boundary conditions.     

Shell Foundations on Tamped Soil Beds

A method is proposed for the installation of a shell foundation on a bed formed from a compacted soil pillar, which repeats the internal shape of the shell, and which can be formed by a special conical die. Results are cited for full-scale tests under field conditions, and an approximate method is proposed for estimation of the bearing capacity of the soil bed from static-probe data.     

田湾核电站预应力钢束全比例灌浆试验

介绍田湾核电站反应堆厂房内安全壳预应力体系灌浆工艺,材料特点,以及浆体的配合比、搅拌程序、灌注程序和质量控制指标。     

圆柱壳结构的合理设计与温度效应

本文对工程上的贮液、贮仓等圆柱壳结构提出改进的有矩设计理论。着重从计入结构自重的三次超静定，变壁厚回桂壳的设计，以及温度对壳内力的影响等进行壳体结构的内力分析，并与通常设计理论和方法进行对比，阐述圆柱壳结构合理设计的一些途径。     

福建省体育馆工程施工技术研究

福建省体育馆工程是建设部重点实施技术示范工程,在施工中结合工程施工特点和创优目标,研究、开发、应用了四大类共10余项重点实施新技术,完成了推新任务和创优的目标。     

网壳结构平稳与非平稳随机地震响应研究

对虚拟激励方法进行了研究,通过自编程序对单双层网壳的平稳与非平稳地震响应进行了分析,并列举一具体算例进行了说明,从而解决了网格结构中非平稳随机地震响应的问题,得出非平稳地震反应小于平稳地震反应的结论。     

The measurement of imperfections in cylindrical thin-walled members

The structural behaviour of thin-walled circular cylindrical members has been shown to be imperfection sensitive. However, only little information of the exact nature of imperfections in such members is available. In this paper a method of measuring imperfections in circular cylindrical members is described, the method is simple to implement in a laboratory environment while providing accurate measurements. Numerical methods to process the measurements into three-dimensional imperfection maps are also presented along with an algorithm to distinguish between significant imperfection patterns and measurement ‘noise’. Results from a recent research project where this method has been used illustrate the derivations in this paper.     

双层球面落地拱网壳罩棚施工技术

河南省体育运动中心体育场罩棚由网壳与铝合金面板组成 ,结构形式新颖。从结构形式、焊接探伤、节点空间定位、安装等方面分析了安装特点