整体现浇钢筋混凝土实心板桥力学性能分析及设计应用

Mechanical Properties Analysis and Design Application of Integral Cast-in-place Reinforced Concrete Solid Slab Bridge

整体现浇钢筋混凝土实心板桥因其建筑高度小,构造简单,施工工法方便,且可以满足弯、斜、异形等特殊要求,在高速公路及城市道路立体交叉工程中得到了广泛应用。针对援孟加拉国孟中友谊八桥工程,运用Midas Civil有限元程序建立板单元模型进行计算分析,得到斜交整体实心板桥内力分布规律、支反力分布情况以及变形曲面的位移规律,结合力学分析及规范要求对斜交整体实心板进行计算配筋和构造配筋。可为今后类似工程的设计、施工提供一定的参考。

Due to its low building height,simple structure,convenient construction method,and meeting the special requirements of bending,slanting and special-shaped,the integral cast-in-place reinforced concrete solid slab bridge has been widely used in the grade separation project of highway and urban road.Based on the Eighth Bangladesh-China Friendship Bridge,this paper used Midas Civil finite element program to establish the plate element model for calculation and analysis,the internal force distribution law and the distribution of bearing reaction of skew integral solid slab bridge and the displacement law of deformation surface were obtained.According to the mechanical analysis and the specification requirements,the reinforcement is calculated and constructed for the skew integral solid slab,which can provide certain reference for research,design and construction of similar engineering in the future.