【摘要】 基于纤维模型的有限元方法,建立了典型高墩大跨连续刚构桥的非线性数值分析模型。采用动力增量分析法,即IDA方法对结构进行了非线性动力时程分析,分别探讨了在纵桥向和横桥向地震作用下高墩连续刚构桥梁结构的破坏规律、最大位移和最大曲率的关系,高阶振型效应对高墩大跨连续刚构桥墩身内力和变形的影响及位移和曲率沿墩高变化的规律。更多还原

【Abstract】 Based on the fiber model,the typical nonlinear numerical analysis model of long-span continuous rigid frame bridge with high pier is presented.IDA method is adopted for the nonlinear dynamic history analysis for the structure.The failur e law and the relationship between maximum displacement and maximum curvature of the element are discussed under earthquake in longitudinal and transversal dire ction respectively.The internal force and deformation of piers,affecting by th e high order vibration,and the displacement and curvature along the high of pie r are studied.更多还原