钢塔斜拉桥复合式锚固结构研究和分析

复合式锚固结构用于钢塔斜拉桥可以简化塔内构造布置,有效传递斜拉索索力。复合式锚固系统主要由钢锚箱和环向加劲组成,斜拉索水平分力由钢锚箱承担,不平衡水平力由环向加劲承担,竖向分力由加强加劲肋与桥塔承担。通过对复合式锚固结构的有限元分析,总结了该锚固结构的受力性能和特点,为同类型斜拉桥塔上锚固结构的设计提供参考。

Study and Analysis on Composite Anchor Structure of Steel-pylon Cable-Stayed Bridge

The composite anchorage structure used for steel-pylon cable-stayed bridge can simplify the structure layout in the pylon and effectively transfer the cable force of stayed cable.The composite anchoring system is mainly composed of steel anchor box and ring stiffener.The horizontal component of stayed cable is assumed by steel anchor box.The unbalanced horizontal component is assumed by ring stiffener.The vertical component is assumed by stiffening rib and bridge pylon.Through the finite element analysis of the composite anchor structure,the mechanical properties and characteristics of this anchor structure are summarized,which provides a reference for the design of the anchor structure on the pylon of the similar cable-stayed bridges.