Deformations of steel cylinder revetment structures under water pressures and wave loads

CHENG Zekun; LIU Yang; HAN Shijie; HAN Xun; CAI Zhengyin

doi:10.11779/CJGE2024S10040

Volume 46 Issue S1

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Chinese Journal of Geotechnical Engineering > 2024 > 46(S1): 92-96. > DOI: 10.11779/CJGE2024S10040

CHENG Zekun, LIU Yang, HAN Shijie, HAN Xun, CAI Zhengyin. Deformations of steel cylinder revetment structures under water pressures and wave loads[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 92-96. DOI: 10.11779/CJGE2024S10040

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Deformations of steel cylinder revetment structures under water pressures and wave loads

1.
CCCC Third Harbor Consultants Co. LTD, Shanghai 200032, China
2.
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China

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Received Date: April 30, 2024

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Abstract

Abstract

The centrifugal model tests are conducted to investigate the stress and deformation characteristics of large-diameter steel cylinder revetment structures under water pressures and wave loads. The displacements and rotation angles of the cylinders under coupled loads are analyzed, and the flow mechanism of the soils is analyzed using the PIV technology. The test results show that during the excavation construction period, the pore pressures of the soils increase rapidly, and after excavation is completed, it gradually tend to be flat. However, the variation of the pore pressures has a hysteresis, and the pore pressures of the soils can only remain stable after a period of time after excavation is completed. As the excavation construction progresses, the cylinders rotate towards the land side, with the fastest rotational speed during excavation. After the excavation is completed, the angle change gradually slows down, with the maximum angle of 0.32 ° and the maximum horizontal displacement of 358 mm towards the land side. Under the influences of the rotation of the cylinders, significant horizontal displacements occur in the foundation soils, but when the distance from the cylinders exceeds 30 m, the displacements of the soils are relatively small and negligible. Overall, the displacements and deformations of the cylinders during the construction period are relatively small, and there is no overturning or obvious sliding failure, indicating that the use of the steel cylinder structures can meet the engineering requirements.
- steel cylinder,
- wave load,
- centrifugal model,
- deformation,
- displacement

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[1]	刘小娇. 港珠澳大桥弧形钢板副格受力分析[D]. 天津: 河北工业大学, 2013. LIU Xiaojiao. Stress Analysis of Curved Steel Vice Grid of Hongkong-Zhuhai-Macao Bridge[D]. Tianjin: Hebei University of Technology, 2013. (in Chinese)
[2]	于长一, 张圣山, 于健, 等. 港珠澳大桥西人工岛大直径钢圆筒实测土压力研究[J]. 中国港湾建设, 2023, 43(4): 54-59. https://www.cnki.com.cn/Article/CJFDTOTAL-GKGC202304011.htm YU Changyi, ZHANG Shengshan, YU Jian, et al. Measured earth pressure on large-diameter steel cylinders installed in west artificial island of Hongkong-Zhuhai-Macao Bridge[J]. China Harbour Engineering, 2023, 43(4): 54-59. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GKGC202304011.htm
[3]	LU W J, LI B, HOU J F, et al. Drivability of large diameter steel cylinders during hammer-group vibratory installation for the Hong Kong–Zhuhai–Macao Bridge[J]. Engineering, 2023, 20(01): 180-191.
[4]	BAI Z G, ZHOU X R, SUN K L, et al. Numerical model of wave forces on continuous cylinder structures[J]. Transactions of Tianjin University, 2001(2): 71-75.
[5]	CHOI S J, LEE K H, GUDMESTAD O T. The effect of dynamic amplification due to a structure׳s vibration on breaking wave impact[J]. Ocean Engineering, 2015, 96: 8-20. doi: 10.1016/j.oceaneng.2014.11.012
[6]	KANG A Z, LIN P Z, LEE Y J, et al. Numerical simulation of wave interaction with vertical circular cylinders of different submergences using immersed boundary method[J]. Computers & Fluids, 2015, 106: 41-53.
[7]	LEE S, HUYNH T, KIM J. Structural identification of gravity-type caisson structure via vibration feature analysis[J]. Smart Structures Systems, 2015, 15(2): 259-281. doi: 10.12989/sss.2015.15.2.259
[8]	王刚, 陈杨, 张建民. 大圆筒结构倾覆稳定分析的有限元法[J]. 岩土力学, 2006, 27(2): 238-241. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200602014.htm WANG Gang, CHEN Yang, ZHANG Jianmin. Finite element method for analyzing overturn stability of large cylindrical structures[J]. Rock and Soil Mechanics, 2006, 27(2): 238-241. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX200602014.htm
[9]	肖忠, 王元战, 及春宁, 等. 波浪作用下加固软基上大圆筒结构稳定性分析[J]. 岩土力学, 2010, 31(8): 2648-2654. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201008051.htm XIAO Zhong, WANG Yuanzhan, JI Chunning, et al. Stability analysis of large cylindrical structure for strengthening soft foundation under wave load[J]. Rock and Soil Mechanics, 2010, 31(8): 2648-2654. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201008051.htm
[10]	周红星, 董志良, 陈平山. 大直径钢圆筒变形特性分析[J]. 水运工程, 2015(3): 21-27. https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201503007.htm ZHOU Hongxing, DONG Zhiliang, CHEN Pinshan. Deformation characteristics of large-diameter steel cylinders[J]. Port & Waterway Engineering, 2015(3): 21-27. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201503007.htm
[11]	龙丽吉, 康海贵, 高鑫林. 深埋式薄壁圆筒结构在滩海地基中的受力特性数值模拟[J]. 水运工程, 2015(12): 41-46. https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201512009.htm LONG Liji, KANG Haigui, GAO Xinlin. Numerical simulation of mechanical properties of embedded large-diameter cylinder structure in foreshore foundation[J]. Port & Waterway Engineering, 2015(12): 41-46. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SYGC201512009.htm