无索区长度对多塔斜拉桥力学行为的影响研究  

ANALYSIS OF THE INFLUENCE OF LENGTH OF CABLE FREE ZONE ON MECHANICAL BEHAVIOROF MULTI TOWER CABLE-STAYED BRIDGE

作　　者：蒋东冰 JIANG Dongbing(Heilongjiang Communications Planning and Design Research Institute Group Co.,Ltd.,Harbin 150080,China)

机构地区：[1]黑龙江省交通规划设计研究院集团有限公司,哈尔滨150080

出　　处：《低温建筑技术》2023年第4期125-128,共4页Low Temperature Architecture Technology

摘　　要：为探讨多塔斜拉桥无索区长度对受力特性的影响,以某多塔斜拉桥为基础,通过改变单一参数的方法,分析了无索区的长度和内力、位移、桥塔位移等指标之间的关系。结果表明在跨中无索区的长度比例为0.14~0.22,塔根无索段的长度之比在0.15~0.19范围内,结构受力较为理想。Based on a multi tower cable-stayed bridge,the relationship between the length of the cable free zone and the internal force,displacement,tower displacement,and other indicators is analyzed by changing the method of a single parameter.The results show that the ratio of the length of the cable free zone in the middle span is 0.14~0.22,and the ratio of the length of the cable free zone in the tower root is 0.15~0.19,so the structural stress is ideal.

关 键 词：斜拉桥 无索区长度 静力分析 力学行为 

分 类 号：TU312[建筑科学—结构工程]