水上大跨度空间网格结构的低温灾害与防腐技术研究  

Low Temperature Disasters and Anti-Corrosion Technology Research on Long-Span Spatial Lattice Structure upon Water

作　　者：严仁章[1] 陈志华[1,2] 孙国军[1] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]天津大学滨海土木工程结构与安全教育部重点实验室,天津300072

出　　处：《建筑钢结构进展》2012年第1期51-57,共7页Progress in Steel Building Structures

基　　金：天津市建设系统科学技术发展计划(2008-24)

摘　　要：水上大跨度钢屋盖结构在低温雨雪冰冻灾害过程中,钢材性能的变化和材料的腐蚀,都对大跨度空间钢结构的性能产生了一定的影响。基于低温条件下钢材的主要力学性能指标变化,通过APDL语言编程建模,分析了一种典型空间钢网格结构在低温条件下的静力性能变化;引入钢材材料腐蚀级别,得到了腐蚀对结构的静力影响曲线,最后提出了新型建筑钢材的防腐技术,为大跨度空间钢结构防灾防腐提供了一定的参考。When long-span spatial structures upon the water meet the snow and frost disaters , which put the steel structures in low temperature conditions , not only the performance of the steel material will change but also causing the corrosion of steel ,and then it leads to a certain effect upon the performance of the long-span spatial structures . Based on the changes of the steel＇ s main mechanical performance indexes in low temperature conditions , we have analysed the changes of the static performance of a typical spatial structure, by building up numerical models with APDL tools . We input the loss level of the corrosion of steel , and graph the static effect of the structures produced by the corrosion . Some proposals for the anticorrosive technology are also put forward at the end of this paper, which provides a certain reference for the corrosion prevention of long-span steel structure buildings in the future.

关 键 词：空间网格结构 低温 防腐 

分 类 号：TU352.3[建筑科学—结构工程]