结合梁钢与混凝土弹模比取值的探讨

Study on Elastic Modulus Ratio of Steel and Concrete under Dead and Live Load for a Composite Bridge

以芜湖长江大桥为例介绍了国内外结合梁恒活载作用下钢与混凝土弹模比的不同取值以及重复荷载作用下混凝土残余变形试验，给出了钢与混凝土弹模比在不同荷载状况下的计算方法，即活载作用下：ｎ０＝Ｅｓ／Ｅｃ，恒载作用下：ｎ１＝ｎ０（１＋）。

Through the medium of Wuhu Changjiang Bridge,the different methods to obtaining elastic mo dulus ratio of steel and concrete under dead and live load for the composite bridges at home and abroad are introduced,and the residual deformation tests of concrete under repeated loading are presented.The computational methods for elastic modulus radio of steel and concrete under different load are given.Namely, n 0=E s/ E c under live load and n 1=n 0(1+φ) under dead load are shown.