建筑钢结构进展2013，Vol.15Issue(2)：52-56,5.
提前卸载临时支撑对大跨度空间结构施工过程的影响分析
Analysis on the Effect of Unloading Temporary Supports in Advance on Construction for Large-Span Spatial Structures
摘要
Abstract
It is inevitable to set up temporary supports in the construction of almost all the large-span spatial structures, since temporary supports can improve the mechanical behavior of the structure. However,the auxiliary steel consumption is also increased. For this reason, it is pivotal to realize the balance between safety and economy according to stress conditions. Analysis on unloading the temporary supports of main stadium for the Universidad Sports Centre in advance is discussed in the paper. The results from unloading in advance and normal unloading are compared. On this basis,the paper also gives some suggestions and comments about construction. The results show that unsafe factor of cyclic unloading is large. It is feasible to consider correction of cyclic unloading at key positions during construction. These results provide a reasonable basis for the construction.关键词
提前卸载/临时支撑/大跨度空间结构/有限元分析Key words
unloading in advance/temporary support/large-span spatial structure/finite element analysis分类
建筑与水利引用本文复制引用
田黎敏,郝际平,方敏勇,王先铁,郑江,钟炜辉..提前卸载临时支撑对大跨度空间结构施工过程的影响分析[J].建筑钢结构进展,2013,15(2):52-56,5.基金项目
国家自然科学基金(51178381),高等学校博士学科点专项科研基金(20096120110004) （51178381）
