|本期目录/Table of Contents|

[1]田 俊,王文炜,宋一凡.大跨度斜拉桥斜拉索无应力长度计算方法[J].建筑科学与工程学报,2016,33(02):71-76.
　TIAN Jun,WANG Wen-wei,SONG Yi-fan.Calculation Method for Unstressed Length of Stay Cables in Long-span Cable-stayed Bridges[J].Journal of Architecture and Civil Engineering,2016,33(02):71-76.
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大跨度斜拉桥斜拉索无应力长度计算方法(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
33卷
期数:
2016年02期
页码:
71-76
栏目:
出版日期:
2016-03-30

文章信息/Info

Title:
Calculation Method for Unstressed Length of Stay Cables in Long-span Cable-stayed Bridges
作者:
田 俊，王文炜，宋一凡
东南大学交通学院
Author(s):
TIAN Jun, WANG Wen-wei, SONG Yi-fan
School of Transportation, Southeast University
关键词:
大跨度斜拉桥; 斜拉索; 无应力长度; 计算方法; 施工控制
Keywords:
long-span cable-stayed bridge;  stay cable;  unstressed length of cable;  calculation method;  construction control
分类号:
-
DOI:
-
文献标志码:
A
摘要:
通过对影响斜拉索无应力长度的施工阶段各种因素的敏感性参数进行分析，确定了影响斜拉索无应力长度的显著因素；综合各种影响因素，建立了斜拉索无应力长度精确计算方法。结果表明：主塔的预偏位、主塔的动态变位、主梁的预拱度、主梁的预抬高、主梁的动态变位、温差、斜拉索弹性模量误差以及计算斜拉索弹性伸长修正值所选用的荷载均为敏感性影响因素；建议的方法可以精确地计算斜拉索的无应力长度，避免出现长索无法调整索长的状况。
Abstract:
The sensitivity parameters of various factors that influenced unstressed length of stay cables in different construction stages were analyzed and the most important influence factors were confirmed. Considering various influence factors, the calculation method for unstressed length of stay cable was given. The results show that the pre-deviation and dynamic displacement of main towers, pre-camber, prearranged height and dynamic displacement of main girders, temperature difference, elastic modulus error of stay cables, the load values which are used to calculate modified elastic elongation of stay cables are all the most sensitive factors. The proposed method can accurately calculate the unstressed length of stay cables, and avoid the situation that the length of long cables cannot be adjusted.

参考文献/References:

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[4]李永乐,邸月龙,赵彤,等.大跨高墩城市轨道交通斜拉桥动力特性及抗风性能[J].建筑科学与工程学报,2010,27(04):19.
　LI Yong-le,DI Yue-long,ZHAO Tong,et al.Dynamic Characteristic and Wind Resistance Behavior of High-pierLong-span Cable-stayed Bridge for Urban Rail Transit[J].Journal of Architecture and Civil Engineering,2010,27(02):19.
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备注/Memo

备注/Memo:
更新日期/Last Update: 2016-03-30