[1]李枝军,李爱群,缪长青,等.运营状态下南京长江二桥拉索索力测试与分析[J].东南大学学报(自然科学版),2007,37(6):1057-1060.[doi:10.3969/j.issn.1001-0505.2007.06.023]
 Li Zhijun,Li Aiqun,Miao Changqing,et al.Measurement and analysis of cable tension in the second Nanjing Yangtze River Bridge under running condition[J].Journal of Southeast University (Natural Science Edition),2007,37(6):1057-1060.[doi:10.3969/j.issn.1001-0505.2007.06.023]
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运营状态下南京长江二桥拉索索力测试与分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
37
期数:
2007年第6期
页码:
1057-1060
栏目:
交通运输工程
出版日期:
2007-11-20

文章信息/Info

Title:
Measurement and analysis of cable tension in the second Nanjing Yangtze River Bridge under running condition
作者:
李枝军 李爱群 缪长青 丁幼亮
东南大学土木工程学院, 南京 210096
Author(s):
Li Zhijun Li Aiqun Miao Changqing Ding Youliang
School of Civil Engineering, Southeast University, Nanjing 210096, China
关键词:
斜拉桥 拉索 运营状态 车载 阻尼器 温度
Keywords:
cable-stayed bridge cable tension running condition vehicle load damper temperature
分类号:
U442
DOI:
10.3969/j.issn.1001-0505.2007.06.023
摘要:
为准确获取运营状态下拉索索力,采用动测法对南京长江二桥进行了拉索索力测试,讨论了车辆荷载、阻尼器以及环境温度对索力测试的影响,并对运营状态下的索力测试结果进行了对比与分析.研究结果表明:相对于面外振动,拉索面内振动更容易受车辆荷载影响,利用面外振动可以较好的确定拉索的自振频率; 阻尼器和温度对拉索自振频率影响较小.通过对比成桥状态的拉索索力测试值和本次索力测试值,可看出个别拉索索力变化较大,大部分拉索索力变化较小.
Abstract:
The vibration method was used to measure the cable tension of the second Nanjing Yangtze River Bridge under running condition. Some factors influencing on measurement are discussed, such as vehicle load, damper and temperature. The results show that the vehicle load has much more effects on in-plane vibration of the cable than on out-plane ones, and the cable modal frequencies can be better acquired by out-plane vibration signal. Some typical cables were measured in different conditions, including before and after removing the damper and different temperature. The results show that the damper and temperature have no significant effect on the cable modal frequencies. Compared with the ones tested in load experiment, most of the cables’ tension change only a little, however a few cables’ tension change greatly.

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备注/Memo

备注/Memo:
作者简介: 李枝军(1978—),男,博士生; 李爱群(联系人),男,博士,教授,博士生导师,aiqunli@public1.ptt.js.cn.
更新日期/Last Update: 2007-11-20