Experimental study on dynamic strength of breakwater foundation under wave loads

LI Zhipeng; LI Yiliang; ZHANG Yuting

doi:10.11779/CJGE2024S10027

Volume 46 Issue S1

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Chinese Journal of Geotechnical Engineering > 2024 > 46(S1): 186-190. > DOI: 10.11779/CJGE2024S10027

LI Zhipeng, LI Yiliang, ZHANG Yuting. Experimental study on dynamic strength of breakwater foundation under wave loads[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(S1): 186-190. DOI: 10.11779/CJGE2024S10027

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Experimental study on dynamic strength of breakwater foundation under wave loads

1.
Tianjin Survey and Design Institute for Water Transport Engineering Co., Ltd., Tianjin Key Laboratory of Surveying and Mapping for Waterway Transport Engineering, Tianjin 300456, China
2.
Tianjin Research Institute for Water Transport Engineering, M.O.T., National Engineering Laboratory for Port Hydraulic Construction Technology, Tianjin 300456, China
3.
Henan Academy of Geology, Zhengzhou 450001, China

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Received Date: April 27, 2024

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Abstract

Abstract

By simulating wave loads, the dynamic triaxial shear tests foundation soils of on breakwaters under isobaric consolidation and undrained flow are carried out. The analysis shows that the cyclic shear stress ratio can be fitted by the power function with failure frequency, but the fitting parameters are not constant. The pore water pressure of soils will increase continuously in the course of shear, but it does not reach the initial value of confining pressure. When it reaches the failure standard, it is about 60%~80% of the initial confining pressure. The relationship between the dynamic pore pressure ratio and the vibration frequency ratio can be well fitted by the power function, and the fitting parameters are not constant, which are related to soil properties. At the beginning, the axial strain is very small, and the compressive strain is less than the tensile strain. At the middle and later stages, the axial strain increases rapidly, and the compressive strain gradually exceeds the tensile strain.
- wave load,
- dynamic triaxial test,
- dynamic strength,
- vibration,
- pore water pressure,
- strain

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References

[1]	刘丹. 波浪荷载对海洋黏土力学性状影响的试验研究[D]. 南京: 南京水利科学研究院, 2010. LIU Dan. Experimental Study on the Mechanical Properties of Marine Clay Influenced by Wave Load[D]. Nanjing: Nanjing Hydraulic Research Institute, 2010. (in Chinese)
[2]	张晨明, 董秀竹, 郭莹, 等. 波浪荷载作用下砂土变形特性的模拟试验研究[J]. 地震工程与工程振动, 2005, 25(2): 155-159. https://www.cnki.com.cn/Article/CJFDTOTAL-DGGC20050200Q.htm ZHANG Chenmin, DONG Xiuzhu, GUO Yin, et al. Experimental study on dynamic deformation behavior of sand under wave-induced loading[J]. Earthquake Engineering and Engineering Vibration, 2005, 25(2): 155-159. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DGGC20050200Q.htm
[3]	孟凡丽, 卢成原, 王姗姗. 波浪荷载下粉质土动应变和动强度的试验研究[J]. 浙江工业大学学报, 2007, 35(6): 671-674. doi: 10.3969/j.issn.1006-4303.2007.06.019 MENG Fanli, LU Chengyuan, WANG Sansan. Experimental study on dynamic strain and strength of silt under wave load[J]. Journal of Zhejiang University of Technology, 2007, 35(6): 671-674. (in Chinese) doi: 10.3969/j.issn.1006-4303.2007.06.019
[4]	闫澍旺, 封晓伟. 天津港软黏土强度循环弱化试验研究及应用[J]. 天津大学学报, 2010, 43(11): 943-948. doi: 10.3969/j.issn.0493-2137.2010.11.001 YAN Shuwang, FENG Xiaowei. Test on strength cyclic softening of Tianjin harbor soft clay and its application[J]. Journal of Tianjin University, 2010, 43(11): 943-948. (in Chinese) doi: 10.3969/j.issn.0493-2137.2010.11.001
[5]	张建民, 王稳祥. 振动频率对饱和砂土动力特性的影响[J]. 岩土工程学报, 1990, 12(1): 89-97. http://cge.nhri.cn/cn/article/id/9344 ZHANG Jianmin, WANG Wenxiang. Effect of vibrationg frequency on dynamic behavior of saturated sand[J]. Chinese Journal of Geotechnical Engineering, 1990, 12(1): 89-97. (in Chinese) http://cge.nhri.cn/cn/article/id/9344
[6]	陈国兴, 刘雪珠. 南京粉质黏上与粉砂互层土及粉细砂的振动孔压发展规律研究[J]. 岩土工程学报, 2004, 26(1): 79-82. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200401015.htm CHEN Guoxing, LIU Xuezhu. Study on dynamic pore water pressure in silty clay inter bedded with fine sand of nanjing[J]. Chinese Journal of Geoteclnical Engineering, 2004, 26(1): 79-82. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC200401015.htm
[7]	SEED H B, LEE K L. Liquefaction of saturated sands during cyclic loading[J]. Journal of the Soil Mechanics and Foundation Divisions, ASCE, 1966, 92(6): 105-34. doi: 10.1061/JSFEAQ.0000913
[8]	曾长女, 刘汉龙, 丰土根, 等. 饱和粉土孔隙水压力性状试验研究[J]. 岩土力学, 2005, 26(12): 1963-1966. doi: 10.3969/j.issn.1000-7598.2005.12.020 ZENG Changnü, LIU Hanlong, FENG Tugen, et al. Test study on pore water pressure mode of saturated silt[J]. Rock and Soil Mechanics, 2005, 26(12): 1963-1966. (in Chinese) doi: 10.3969/j.issn.1000-7598.2005.12.020
[9]	郭莹, 贺林. 振动频率对饱和砂土液化强度的影响[J]. 防灾减灾工程学报, 2009, 29(6): 618-623. https://www.cnki.com.cn/Article/CJFDTOTAL-DZXK200906003.htm GUO Ying, HE Lin. The influences of vibration frequencies on liquefactiong strength of saturated sands[J]. Journal of Disaster Preventiong and Mitigationg Engineering, 2009, 29(6): 618-623. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-DZXK200906003.htm
[10]	张健, 高玉峰, 沈扬, 等. 波浪荷载作用下饱和粉土反正弦孔压拟合参数影响因素分析[J]. 岩土力学, 2011, 32(3): 727-732. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201103015.htm ZHANG Jian, GAO Yufeng, SHEN Yang, et al. Factor analysis of fitting parameter for saturated silt arcsin pore water pressure under wave loading[J]. Rock and Soil Mechanics, 2011, 32(3): 727-732. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201103015.htm