拉条设置形式对实腹式檩条稳定承载力的影响研究  

Study on Influence of Brace Setting Form on Solid-Web Purline Stable Bearing Capacity

作　　者：宋高丽[1] 沈凡[1] 杨光华[1] 

机构地区：[1]昆明学院城建系,昆明650000

出　　处：《结构工程师》2011年第4期40-44,共5页Structural Engineers

摘　　要：通过对不同拉条设置形式下实腹式檩条模型的加载试验研究和理论分析,指出现行规范仅以受压翼缘设置拉条数量进行简单的区分来计算檩条的稳定承载力,不考虑不同拉条设置形式的影响,其计算结果是安全的,但在某些情况下过于保守;实际工程中将拉条设在檩条腹板高度中部的现象存在安全隐患,应避免使用;通过在拉条两端设置帽形支座,实现仅在檩条腹板高度中部设置拉条却能同时约束檩条上、下翼缘的效果。Through the solid-web purline model loading test study and the theoretical analysis under the different braces setting forms,it was indicated that the purline stable bearing capacity suggested in current code,only according to the compression flange number of braces,not taking into account the influence of different braces setting forms is safe,but it is too conservative in some cases.The phenomenon to set the braces in the central of a height of the purline web in a practical engineering is unsafe,which should be avoided using.Through setting the hat shaped pedestal on the both ends of the braces,to realize the braces in the effect of constraining both the up flange and the down flange of a purline in the case to set the braces in the central of the height of a purline web.

关 键 词：拉条 设置形式 檩条 稳定承载力 

分 类 号：TU392.5[建筑科学—结构工程]