型钢轻骨料混凝土梁挠度与裂缝宽度的计算  

Calculation of deflection and crack width of steel reinforced lightweight aggregate concrete beams

作　　者：邵永健[1,2] 刘凡[2] 翁晓红[2] 赵鸿铁[1] 殷志文[2] 夏敏[2] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]江苏省结构工程重点实验室(苏州科技学院),苏州215011

出　　处：《建筑结构》2009年第6期22-24,共3页Building Structure

基　　金：建设部科技研究项目(01-2-20)

摘　　要：为研究型钢轻骨料混凝土梁挠度及裂缝宽度的计算方法,对8根型钢轻骨料混凝土试验梁的挠度及裂缝宽度进行了分析,提出了型钢轻骨料混凝土梁刚度计算的"修正钢骨规程法"和裂缝宽度计算的"修正型钢规程法"。当试验荷载分别为0.3Pu,0.5Pu和0.7Pu时,按修正钢骨规程法计算得到的8根试验梁的挠度值与试验实测值的比值,其平均值分别为1.051,1.090和1.065;按修正型钢规程法计算得到的8根试验梁的裂缝宽度与试验实测值的比值,其平均值分别为1.066,1.016和1.045。可见型钢轻骨料混凝土梁用修正钢骨规程法来计算挠度和用修正型钢规程法来计算裂缝宽度是可行的。In order to study the calculation method of the deflection and crack width of steel reinforced lightweight aggregate concrete beams, the deflection and crack width of eight SRLC testing beams were analyzed. ＂Up-dated directive rules of SRC structures＂ used by stiffness calculation and crack width calculation were presented. When the test loads were 0.3 Pu, 0.5 Pu and 0.7Pu, the averages of the ratios of the calculation values according to ＂up-dated directive rules of SRC structures＂ to the measured values for the deflection of eight SRLC testing beams were 1.051, 1.090 and 1.065 respectively, and the averages of the ratios of the calculation values according to ＂up-dated directive rules of SRC structures＂ to the measured values for the crack width of eight SRLC testing beams were 1.066, 1.016 and 1.045 respectively. As a result, it was feasible to adopt ＂up-dated directive rules of SRC structures＂ to calculate the deflection and crack width of SRLC beams.

关 键 词：型钢轻骨料混凝土 梁 挠度 裂缝宽度 计算方法 

分 类 号：TU37[建筑科学—结构工程] TU528.2