独塔斜拉桥塔索锚固区空间应力分析

以某独塔斜拉桥为研究背景,建立空间有限元实体模型,研究桥塔在不同荷载工况下塔索锚固区的空间应力情况,重点研究塔索锚固区在不同荷载工况下结构受力情况和作用机理。经过对比分析,在增加环向预应力的基础上可以有效降低塔身截面拉、压应力,改善结构受力状态。

Analysis of Spatial Stress in Pylon-cable Anchorage Zone of Single-pylon Cable-stayed Bridge

Based on the study background of a single-pylon cable-stayed bridge,the spatial finite element solid model is established to study the spatial stress condition in the pylon-cable anchorage zone of the bridge pylon under the different load conditions,and to study the stress condition and action mechanism of the structures in the pylon-cable anchorage zone under the different load conditions in detail.By comparing and analyzing,the tensile and compressive stresses of pylon body can be effectively reduced on the basis of adding the circumferential prestress so as to improve the stress state of structure.