Experimental study on characteristics of pore water pressure and dissipated energy of saturated calcareous sand under complex loading conditions

LI Baojian; WANG Zhe; LÜ Guoer; PAN Kun; YANG Zhongxuan; GONG Xiaonan

doi:10.11779/CJGE2023S20039

Volume 45 Issue S2

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Chinese Journal of Geotechnical Engineering > 2023 > 45(S2): 37-41. > DOI: 10.11779/CJGE2023S20039

LI Baojian, WANG Zhe, LÜ Guoer, PAN Kun, YANG Zhongxuan, GONG Xiaonan. Experimental study on characteristics of pore water pressure and dissipated energy of saturated calcareous sand under complex loading conditions[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S2): 37-41. DOI: 10.11779/CJGE2023S20039

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Experimental study on characteristics of pore water pressure and dissipated energy of saturated calcareous sand under complex loading conditions

1.
PowerChina Huadong Engineering Corporation Limited, Hangzhou 311122, China
2.
College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
3.
Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China

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Received Date: November 29, 2023
Available Online: April 19, 2024

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Abstract

Abstract

Calcareous sand, the special soil, is the main material for the filling of islands and reefs in the South China Sea, which is biogenic sediments and skeletal remains of marine organisms. It is of great importance to study its dynamic characteristics. By a series of undrained cyclic triaxial tests on the calcareous sand, the characteristics of pore water pressure are investigated. Besides, the energy method is used to establish the relation between the pore water pressure and the dissipated energy. The results show that the ultimate residual pore pressure ratio of the saturated calcareous sand increases first and then decreases with the change of consolidation stress ratio. The accumulated dissipated energy during cyclic loading is related to the initial static shear stress ratio and relative density of the sample, and has few influences on the cyclic stress ratio. The dissipated energy of the saturated calcareous sand under different test conditions can be predicted by the energy model. The research provides theoretical basis and technical support for the stability analysis of calcareous sand foundations.
- calcareous sand,
- characteristic of pore water pressure,
- dissipated energy,
- initial static shear stress,
- relative density

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[1]	蔡正银, 陈元义, 朱洵, 等. 级配对珊瑚砂颗粒破碎与变形特性的影响[J]. 岩土工程学报, 2023, 45(4): 661-670. doi: 10.11779/CJGE20220884 CAI Zhengyin, CHEN Yuanyi, ZHU Xun, et al. Influences of gradation on particle breakage and deformation characteristics of coral sand[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(4): 661-670. (in Chinese) doi: 10.11779/CJGE20220884
[2]	汪稔, 吴文娟. 珊瑚礁岩土工程地质的探索与研究: 从事珊瑚礁研究30年[J]. 工程地质学报, 2019, 27(1): 202-207. https://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ201901022.htm WANG Ren, WU Wenjuan. Exploration and research on engineering geological properties of coral reefs: engaged in coral reef research for 30 years[J]. Journal of Engineering Geology, 2019, 27(1): 202-207. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-GCDZ201901022.htm
[3]	LI B J, LEI G, GUO P P, et al. Experimental investigation into limit void ratio characteristics of calcareous sands considering various factors[J]. Geofluids, 2021: 3686852.
[4]	王伟光, 姚志华, 李婉, 等. 侧限高压下珊瑚砂-石英砂混合料的压缩特性及颗粒破碎行为[J]. 岩土工程学报, 2022, 44(增刊1): 6-11. doi: 10.11779/CJGE2022S1002 WANG Weiguang, YAO Zhihua, LI Wan, et al. Compression characteristics and particle crushing behavior of coral sand-quartz sand mixture under confined high pressure[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S1): 6-11. (in Chinese) doi: 10.11779/CJGE2022S1002
[5]	汪成贵, 束善治, 肖杨, 等. 考虑钙质砂颗粒破碎的分数阶边界面本构模型[J]. 岩土工程学报, 2023, 45(6): 1162-1170. doi: 10.11779/CJGE20220229 WANG Chenggui, SHU Shanzhi, XIAO Yang, et al. Fractional-order bounding surface model considering breakage of calcareous sand[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(6): 1162-1170. (in Chinese) doi: 10.11779/CJGE20220229
[6]	COOP M R. The mechanics of uncemented carbonate sands[J]. Géotechnique, 1994, 44(3): 607-6264.
[7]	COOP M R, SORENSEN K K, BODAS FREITAS T, et al. Particle breakage during shearing of a carbonate sand[J]. Géotechnique, 2004, 54(3): 157-163. doi: 10.1680/geot.2004.54.3.157
[8]	刘崇权, 汪稔. 钙质砂物理力学性质初探[J]. 岩土力学, 1998, 19(1): 32-37, 44. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX199801005.htm LIU Chongquan, WANG Ren. Preliminary study on physical and mechanical properties of calcareous sand[J]. Rock and Soil Mechanics, 1998, 19(1): 32-37, 44. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX199801005.htm
[9]	蔡正银, 侯贺营, 张晋勋. 考虑颗粒破碎影响的珊瑚砂临界状态与本构模型研究[J]. 岩土工程学报, 2019, 41(6): 989-995. doi: 10.11779/CJGE201906001 CAI Zhengyin, HOU Heying, ZHANG Jinxun, et al. Critical state and constitutive model for coral sand considering particle breakage[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(6): 989-995. (in Chinese) doi: 10.11779/CJGE201906001
[10]	NEMAT-NASSER S, SHOKOOH A. A unified approach to densification and liquefaction of cohesionless sand in cyclic shearing[J]. Canadian Geotechnical Journal, 1979, 16(4): 659-678. doi: 10.1139/t79-076
[11]	KOKUSHO T. Liquefaction potential evaluations: energy-based method versus stress-based method[J]. Canadian Geotechnical Journal, 2013, 50(10): 1088-1099. doi: 10.1139/cgj-2012-0456
[12]	PAN K, YANG Z X. Evaluation of the liquefaction potential of sand under random loading conditions: equivalent approach versus energy-based method[J]. Journal of Earthquake Engineering, 2020, 24(1): 59-83. doi: 10.1080/13632469.2017.1398693
[13]	LIANG L Q, FIGUEROA J L, SAADA A S. Liquefaction under random loading: unit energy approach[J]. Journal of Geotechnical Engineering, ASCE, 1995, 121(11): 776-781. doi: 10.1061/(ASCE)0733-9410(1995)121:11(776)
[14]	JAFARIAN Y, TOWHATA I, BAZIAR M H, et al. Strain energy based evaluation of liquefaction and residual pore water pressure in sands using cyclic torsional shear experiments[J]. Soil Dynamics and Earthquake Engineering, 2012, 35(2): 13-28.