钢筋混凝土受弯构件在重复荷载作用下的变形和裂缝宽度计算  

Predicting the Deformation and Crack Opening of Reinforced Concrete Flexural Member under Repeated Loading

作　　者：王瑞敏[1] 赵国藩[1] 王清湘[1] 李树瑶 

机构地区：[1]大连理工大学 [2]华北水利水电学院

出　　处：《中国公路学报》1991年第1期65-71,87,共8页China Journal of Highway and Transport

摘　　要：以钢筋混凝土受弯构件在重复荷载作用下的试验研究为基础,研究了钢筋混凝土受弯件受压区的应变随重复荷载作用次数增加而增大的变化规律,分析研究了钢筋混凝土受弯构件在高周重复荷载作用下刚度和裂缝宽度的变化,给出了刚度和裂缝宽度的计算方法,计算结果和试验实测结果符合良好,证明这一计算模式是可行的。Based on the fatigue tests,a method for predicting the rigidity re- duction and the development of crack opening of reinforced concrete flexural mem- ber under repeated loading is proposed in this paper. In the method, the incre- ment of the strain of concrete in the compressive zone, the initial rigidity and crack opening are used as parameters. The calculated results fit the test data well.

关 键 词：受弯构件 重度荷载 刚度 裂缝宽度 

分 类 号：TU375.02[建筑科学—结构工程]