钢-混凝土结合梁负弯矩区混凝土裂缝宽度计算方法及控制措施

Negative Bending Moment Calculation Method for Concrete Crack of Steel-concrete Composite Beam and Its Control Measures

通过引入裂缝的概念,给出了钢-混凝土结合梁负弯矩区混凝土裂缝宽度的计算方法及研究现状,并给出对应的计算公式。介绍了负弯矩区混凝土裂缝成因,并从设计计算和施工两方面提出控制措施。

This paper gives a detailed calculation method of concrete crack width and research status of negative moment area of steel-concrete girder by introducing the concept of crack, and gives the corre- sponding calculating formula. It introduced the causes of the cracks in negative moment area and then put forward the control measures from two aspects of the calculation and construction.