独塔单索面单边受拉曲梁斜拉桥受力性能分析  

Static Research on Unilateral Curved Cable-Stayed Bridge with Single Tower and Single Plane

作　　者：李睿智 王立彬[1] 王鹏展 刘文峰 LI Ruizhi;Wang Libin;Wang Pengzhan;Liu Wenfeng(School of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China;Jiangsu Feishang Technology Safety Monitoring Consulting Co. Ltd,Zhenjiang 211009,China)

机构地区：[1]南京林业大学土木工程学院,南京210037 [2]江苏飞尚科技安全监测咨询有限公司,江苏镇江211009

出　　处：《森林工程》2018年第2期74-80,共7页Forest Engineering

基　　金：江苏高校优势学科建设工程资助项目(PDPA)

摘　　要：为了对独塔单索面单边受拉曲梁斜拉桥这种新型结构体系的基本力学原理和结构布置对结构静力的影响进行分析,了解这种结构的受力特点和影响因素,以独塔单索面单边受拉曲梁斜拉桥为研究对象,分别讨论分析曲线斜拉桥内侧单边受拉和外侧单边受拉时的受力特点,提出相应结构布置方案,通过Midas/Civil结构分析软件分别建立相应有限元模型,分析索塔锚固位置、环向索对相应结构静力的影响。得到锚固位置和环向索与结构静力的数值关系,结果表明:对于内、外侧单边受拉时,存在一个最佳锚固位置,结构内力整体分布较好;施加环向索力可以改善内侧受拉斜拉桥的力学性能,但对于外侧受拉斜拉桥作用不显著。To study the basic mechanics principle and the effect of structural arrangement on statics of a new structural system unilateral curved cable-stayed bridge with single tower and single plane and study the stress characteristics and influencing factor of the structure,we take unilateral curved cable-stayed bridge with single tower and single plane as research project,cables anchored on inner side or outer side are discussed respectively.Then we analyze the influence of anchor position of the cable-tower connection and hoop cable effect on structural statics by FEM software and get the magnitude relation of anchor position of the cable-tower connection and hoop cable with statics.The results show that there is an optimal anchoring position for the inner and outer unilateral tension,the overall distribution of internal forces is better.The application of hoop cable canimprove structure performance for inner cable plane structure while for the outer cable structure the effect is not obvious.

关 键 词：曲线斜拉桥 单索面 环向索 有限元 单边受拉 静力 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]