钢管混凝土独塔斜拉桥塔墩梁结合段局部受力分析

Local Stress Analysis of Pylon-pier-beam Joint Section of Single Tower Cable-stayed Bridge

钢管混凝土斜拉桥的塔墩梁固结区的构造复杂,且是上部结构荷载传递到桥墩的关键受力部位,需对其进行局部精细化分析以了解其受力特点,为局部构造设计及配筋优化提供理论依据。这里以某淮河大桥为研究背景,选用大型通用软件ANSYS建立独塔斜拉桥塔墩梁结合段的局部空间有限元模型,分析其固结区的应力分布情况。在截面上选取部分特征点,通过对其空间应力的传递和分布进行分析,验证并指导其局部构造设计。

The structure of the tower pier beam consolidation section of the concrete-filled steel tubular cable-stayed bridge is complex,and it is the key force part of the superstructure load transmitted to the pier,so it is necessary to be analyzed locally to understand its stress characteristics and provide theoretical basis for local tectonic design and reinforce ment optimization.Taking on Huaihe River bridge as the research background,this paper selects a large general software ANSYS to establish a local spatial finite element model for the joint section of the pier girder of a single-tower cable-stayed bridge,and analyzes the stress distribution in its consolidation area.Selecting some characteristic points on the section,using the analysis of the spatial stress transmission and distribution,verify and guide the local structural design.