基于ANSYS的高桩码头轨道梁内力分析

Force analysis for rail beams of high-piled wharf based on ANSYS

采用ANSYS软件对移动机械荷载作用下轨道梁的刚性支承和弹性支承进行有限元模拟,得到不同模型下的结构内力以及支座反力。对计算模型的结果进行对比分析,并探讨支座刚性系数变化对弹性支承轨道梁结构内力的影响。计算结果表明:分布弹性支承对支座处弯矩有较好的削峰效果,也能起到减小跨中弯矩的作用,轨道梁结构内力宜采用分布弹性支承连续梁模型计算;采用不同桩基时支座刚性系数的变化对结构内力影响较小,适当增大支座刚性系数对结构安全有利。

A finite-element simulation is carried out for the rigid support and elastic support of rail beams under traveling mechanical load with the ANSYS software, deducing the internal forces and the reaction of supports in different calculation models. A comparative analysis is conducted for the results of different models, and the influence from the change of supports＇ stiffness coefficient on the structural internal forces of rail beams is discussed. The results reveal that the uniformly distributed elastic support has a beneficial effect on the bending moment＇s peak clipping over the supports＇ edge, and it is also useful for reducing the mid-span bending moment. The continuous beam model with uniformly distributed elastic support is appropriate for the internal force calculation of rail beam structures. It shows that the change of supports＇ stiffness coefficients has a relatively weak effect by using different pile foundations for calculation models, and a proper increase of supports＇ stiffness coefficient is good for the structural safety.