摘要
以(120+120)m独塔斜拉T构组合桥为背景,研究分丝管索塔锚固区混凝土及索鞍应力分布规律。采用ABAQUS软件建立索塔节段局部有限元模型,通过模拟斜拉索与索鞍的接触关系,研究索塔锚固区混凝土与索鞍的空间应力分布状态,并与等效面荷载分析方式进行对比分析。结果表明:接触分析比面荷载分析更接近实际受力情况,可更准确模拟出斜拉索的横向变形,及受到的索塔两侧不平衡索力的影响。此结果为同类型桥梁索鞍区域受力分析提供参考。
Taking(120+120)m single-tower cable-stayed T structure composite bridge as the background,the stress distribution of concrete and cable saddle in the anchorage zone of filament pipe and cable tower was studied.The local finite element model of the cable pylon segment was established by ABAQUS software.By simulating the contact relationship between the cable and the cable saddle,the spatial stress distribution state of the concrete and the cable saddle in the anchor zone of the cable pylon was studied and compared with the equivalent surface load analysis method.The results showed that the contact analysis was closer to the actual force situation than the surface load analysis,and can accurately simulate the transverse deformation of the cable and the influence of unbalanced cable forces on both sides of the cable pylon.
作者
王立峰
孟祥冬
付宁
刘龙
WANG Lifeng;MENG Xiangdong;FU Ning;LIU Long(School of Civil Engineering,Northeast Forestry University,Harbin 150040,China;China Railway 22nd Bureau Group Co.,Ltd.,Beijing 100043,China)
出处
《森林工程》
北大核心
2022年第1期132-138,共7页
Forest Engineering
基金
中央高校基本科研业务费专项资金项目(2572019CP02)
黑龙江省重点研发计划指导类项目(GZ20210206)。
关键词
铁路桥梁
索塔锚固区
数值计算
分丝管
索鞍
有限元
Railway bridge
anchorage zone of pylon
numerical calculation
filament pipe
cable saddle
finite element
