【摘要】 文章针对曲线区段槽型梁桥的特点,采用空间有限元法进行研究。分别建立Midas单梁模型、Midas梁格模型及ANSYS实体模型,比较相同荷载下的支座反力、竖向挠度、截面纵向应力及剪力滞效应。通过对比发现,采用Midas梁格计算方法误差较小,与实体模型计算结果接近,说明梁格法能较好地适应计算分析要求,从而找到了一种适合此类结构的快捷、准确建模计算方法。可为曲线段槽型梁桥结构设计、施工提供依据,具有理论和工程实际意义。更多还原

【Abstract】 According to the characteristics of curved beam and trough beam,the finite element model is used in this paper.Beam model,beam-grid model and entity model are commonly used in the analysis of curved beam bridge.Midas beam model,Midas beam-grid model and ANSYS entity model are established respectively to compare the calculation results of reaction force,vertical deflection,stresses and shear lag effect under the same load.By contrast,the calculation of using Midas beam-grid model is close to the calculation result of entity model with few errors.It shows Midas beam-grid model is capable to meet the demands of calculation and analysis,and one quick and accurate method was found.This paper provides a basis for the design and construction of trough beam in curved railway bridge,which has theoretical and practical significance.更多还原