钢⁃UHTCC组合桥面板弯曲承载性能研究

Research on the Flexural Bearing Performance of Steel⁃UHTCC Composite Bridge Deck Under Positive Bending Moment

为了研究正弯矩作用下钢⁃超高韧性水泥基复合材料(UHTCC)组合桥面板的极限承载力和刚度,进行了相关理论公式的推导,并利用ABAQUS软件建立有限元模型,将有限元计算结果和理论公式计算结果进行对比。结果发现有限元计算得到的承载力和刚度都比理论公式计算得到的承载力和刚度大,有限元计算得到的承载力与理论计算值误差均在10%以内,有限元计算与理论计算刚度值的最大误差不超过5%,表明理论计算与有限元结果吻合良好,验证了这种理论计算方法的可靠性。

In order to study the ultimate bearing capacity and stiffness of the steel⁃UHTCC composite bridge deck under positive bending moment,this paper derives the relevant theoretical formulas,and uses ABAQUS software to establish a finite element model.The results of the theoretical formulas were compared with that from ABAQUS analysis.It was found that the bearing capacity and stiffness calculated by the finite element were larger than those calculated by the theoretical formula.The maximum difference between the bearing capacity calculated by the finite element and the theoretical calculation was below 10%.The maximum difference between the calculated stiffness of the finite element and the theoretical calculated stiffness does not exceed 5%,indicating that the theoretical calculation is in good agreement with the finite element result,which verifies the reliability of this theoretical calculation method.