高强混凝土在长期荷载作用下的变形  

TIME-DEPENDENT DEFORMATION OF HIGH-STRENGTH REINFORCED CONCRETE BEAMS UNDER LONG-TERM LOADING

作　　者：龚志国 戴国亮[2] 蒋永生[2] 梁书亭[2] 

机构地区：[1]江苏建筑科学研究院,南京210008 [2]东南大学土木工程学院,南京210096

出　　处：《工业建筑》2002年第3期45-47,21,共4页Industrial Construction

摘　　要：对两根高强钢筋高强混凝土梁和两根预应力高强混凝土梁在长期荷载作用下的变形进行了试验研究 ,同时用计算机对两种构件的长期变形进行了模拟分析 ,计算中考虑了弯曲变形、剪切变形和高强混凝土徐变及收缩的影响 ,与试验结果吻合良好 ,最后对长期变形的θ值提出了修正建议。Experimental researches have been conducted on the deformation of two high\|strength concrete beams with high\|strength bars and two prestressed high\|strength concrete beams under long\|term concentrated loads. Computer is used to analyze the development of long\|term deflection considering flexure and shear deformation as well as the effects of creep and shrinkage.The calculation results are in good accordance with the test results. In final amendable suggestion on value of θ is also presented.

关 键 词：高强钢筋 高强混凝土 变形 徐变 收缩 荷载 

分 类 号：TU528.31[建筑科学—建筑技术科学]