（1 哈尔滨工业大学土木工程学院，哈尔滨 150090; 2 北京交通大学土木建筑工程学院，北京 100044）

［摘要］针对一游泳馆网架结构在使用中出现的杆件严重锈蚀和部分杆件挠曲问题，进行了现场调查和技术分析，阐明了引发问题的主要原因。指出除施工质量问题外，有两点教训值得在今后的设计中注意：一是对于某些处于恶劣工作环境中的钢结构，要特别注意防腐和通风；二是在结构分析中，要注意力学简化模型是否与实际一致，特别是对边界支承条件的处理。

［关键词］游泳馆；网架结构；安全性评估；有限元模型

Structural safety assessment of a grid structure as the roof of a swimming hall

Wu Yue^１, Wang Fenglai^１, Chen Bo^２, Pan Jinglong^１(1 School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China；2 Beijing Jiaotong University,Beijing 100044,China)

Abstract:It was found that a grid structure on a swimming hall arisen severely corrosion and some bars became curving during service. The-field observation and technical analysis were carried out, and some reasonable conclusions were drawn. Except for the construction quality, it can be learned from this lesson that we should pay more attention to anticorrosion and ventilation treatment for steel structures that service in formidable conditions. Meanwhile, we also need to insure that the mechanics model is consistent with the prototype when carry out structure analysis, especially for simplifying the boundary conditions.

Keywords:swimming hall; grid structure; safety assessment; finite element model

*东南大学混凝土及预应力混凝土结构教育部重点实验室访问学者基金资助。

作者简介：武岳，博士，教授。

参考文献

［1］JGJ7—91网架结构设计与施工规程［S］.

［2］GB50009—2001建筑结构荷载规范［S］.

［3］GB50017—2003钢结构设计规范［S］.