基于节线法的地锚式悬索桥缆形计算分析  

Calculation and analysis of the cable shape of the ground-anchored suspension bridge based on the nodal method

作　　者：董福民 宁晓骏[1] 熊云睿 周兴林 DONG Fu-min;NING Xiao-jun;XIONG Yun-rui;ZHOU Xing-lin(College of Construction Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《交通科学与工程》2020年第1期56-62,共7页Journal of Transport Science and Engineering

摘　　要：分别介绍了抛物线法、分段悬链线法及节线法等3种计算理论。并用这3种方法分别计算了地锚式悬索桥成桥坐标和空缆坐标。以分段悬链线法的计算结果作为验算标准,分析了基于Midas/Civil2019软件的节线法在地锚式悬索桥线形分析过程中的优、缺点。研究结果表明:基于节线法的主缆线形计算是以节点平衡为依据进行数值迭代的近似计算,其结果符合工程实际,对于设计和施工都具有借鉴意义。Three calculation theories of the parabolic method,the segmented catenary method and the section line method are introduced.Three methods to calculate the bridge main cable coordinates and empty cable coordinates of the ground-anchored suspension bridge are used.The calculation result of segmented catenary method as the standards of verification,the advantages and disadvantages of the nodal method based on Midas/Civil 2019 software in the linear analysis process of the ground-anchored suspension bridge are described.The calculation of the main cable shape based on the nodal line method is the approximate calculation of numerical iteration is based on the node balance.The result is in line with the engineering practice and has certain practical significance for design and construction.

关 键 词：主缆线形 抛物线法 分段悬链线法 节线法 MIDAS CIVIL 

分 类 号：TU997[建筑科学—市政工程]