支座处可滑动的多跨连续索分析与计算  

Analysis and Calculation of Slideable Multi-span Continuous Cable at Support

作　　者：王伟[1] 黄才良[1] WANG Wei;HUANG Cai-liang(School of Civil Engineering,Dalian University of Technology,Dalian 116023,China)

机构地区：[1]大连理工大学土木工程学院

出　　处：《北方交通》2020年第1期20-23,共4页Northern Communications

摘　　要：对缆索在支座处可自由滑动的多跨连续索静力平衡进行了分析,推导出索单元无应力长度发生变化时的滑移刚度公式,提出了已知目标点标高求缆索线型以及已知主索无应力长度求解施工过程线形两种计算模式,并结合实例进行分析,计算结果证明本方法正确,计算精度满足实际工程要求。The static balance of the multi-span continuous cable which can slide freely at the support of cable rope is analyzed,the slippage stiffness formula is derived when the unstressed length of cable element changes,and two calculation modes of getting the cable line type of the known target point elevation and solving the construction process line type of unstressed length of the known main cable are put forward and analyzed by combining with living examples.The calculation results prove that this method is correct and the calculation accuracy meets the actual engineering requirements.

关 键 词：连续索 滑移 非线性 

分 类 号：U448.21+4[建筑科学—桥梁与隧道工程]