Study on Reliability of Reinforced Concrete Beams Based on Crack Width

Yongping Yu, Yangkai Xiang, Guozheng Wang

Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: By studying the reliability of concrete components, the reliability of reinforced concrete beams based on crack width is studied. Firstly expounds the basic theory of structural reliability, and then, according to a second order moment method based on crack width limit state equation, and then according to the relia-bility index formula to solve the parameters in the formula, to calculate reliability index expression even-tually. According to the reliability index of the calculate formula, you can see that there are many factors that affect the crack width and reliable indicators of the effective height of beam section, steel rebar diameter, root number, beam section width and variable ｌｏａｄ and the ratio of the permanent ｌｏａｄ effect.

Keywords: crack width; format; limit state equation; reliable indicator; reliability