基于ANSYS的简支梁桥柔性墩纵向力分配研究

Research on longitudinal force distribution among the flexible piers of simply supported girder bridge with ANSYS program

在刚度耦合模型的基础上,采用大型有限元分析软件ANSYS建立三维实体有限元模型,对连续桥面简支梁桥柔性墩纵向力分配进行仿真分析,通过有限元模拟值与采用刚度耦合模型得到的计算值对比分析表明,刚度耦合模型计算墩顶水平力是合理的,结果是可靠的。采用节点耦合的方式模拟板式橡胶支座,采用弹簧-阻尼单元模拟滑板支座是可行的。

=Based on the computation with stiffness coupling model, it establishes a 3-D FEM solid model with ANSYS program, and carries out the simulation analysis on longitudinal force distribution among the flexible piers of simply supported girder bridge with continuous deck. By comparatively analyzing the results with stiffness coupling model computation and with simulation analysis, it proves that the stiffness coupling model is effective and correct to calculate the longitudinal force distribution on the top of pier, and will be reasonable to simulate laminated rubber bearing with node coupling and to simulate sliding-bearing with spring-damper element.