884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（中國建筑科學研究院建筑結構研究所  北京  100013）
【提要】  對橫穿混凝土后澆帶鋼筋對后澆帶效能的不利影響進行了詳細分析，給出了導致后澆帶失效的橫穿鋼筋最大配筋率ρs，max及應用實例，提出了相應的實用設計建議。如建議近似在0～0.5ρs，max范圍內控制橫穿后澆帶的設計配筋；對橫穿后澆帶
的鋼筋盡可能采用搭接連接方式等。
【關鍵詞】  混凝土收縮  混凝土后澆帶  橫穿后澆帶鋼筋  后澆帶效能
Calculation Analysis for Bad Effect on Efficiency of Postcasting Band in Concrete Structures by Crossed Reinforcing Steel Bars/Pan Li（Institute of Building Structures，China Academy of Building Research，Beijing 100013，China）
Abstract:Based on the calculation analysis about the bad effect on efficiency of postcasting bands in concrete structures by the crossed reinforcing steel bars，the formula of the maximum ratio ρs，maxof crossed steel bars is deduced. Samples of ρs，maxand the useful design proposals are given for the practical need of superlong and continue concrete structures.
Keywords:concrete shrink；postcasting band；steel bars across postcasting concrete band；efficiency of postcasting concrete band