Security of tunnel immersion under waves and a single barge

被引：0
|
作者：
Zuo W. [1 ,2 ]
Zhang X. [1 ,2 ]
Fan T. [3 ,4 ]
Chen J. [1 ,2 ]
机构：
[1] School of Water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou
[2] Collaborative Innovation Center of Water Resources Efficient Utilization and Protection Engineering in He'nan Province, Zhengzhou
[3] School of Civil Engineering and Transportation, South China University of Technology, Guangzhou
[4] Naval Architecture and Ocean Engineering R & D Center of Guangdong Province, Guangzhou
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 07期
关键词：
Barge; Cable tension; Heave movement; Low frequency; Spectral analysis; Spectral density; Tunnel element; Wave frequency;
D O I：
10.11990/jheu.201904015
中图分类号：
学科分类号：
摘要：
In this study, a physical model test was conducted to investigate the dynamic response of the tunnel element and a single barge under the action of waves to solve the security problem associated with tunnel immersion. Further, Welch's method was employed for conducting a spectral analysis of the security problems, including the tension acting on the cable connecting the immersed tunnel element and the barge on the water. In addition, the frequency spectrum characteristics of the cable tension under different effective periods and wave heights were discussed. The results showed that the force on the cable was greater than zero in case of tunnel immersion under a single barge, and there was no slack phenomenon. Furthermore, the force on the cable was less than that required for tunnel immersion using a fixed platform. The frequency of the low-frequency component of cable tension was the same as the natural frequency of the system between the tunnel element and the single barge. The heave motion in the single barge-tunnel element system significantly affected the safety of the cables, and more adjustment cables should be added for construction purposes. © 2020, Editorial Department of Journal of HEU. All right reserved.
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页码：973 / 977
页数：4
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