钙质砂循环剪切特性及抗剪强度弱化机制

doi:10.13722/j.cnki.jrme.2024.0364

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Abstract Calcareous sand is one of the important materials for island construction. There are few reports about the change of shear strength of calcareous sand after cyclic shear. In this paper，the shear strength of calcareous sand and quartz sand was obtained through consolidated drained and undrained triaxial shear tests. Based on the shear strength under static load，undrained cyclic traxial tests under different static stress ratios and cyclic stress ratios，as well as undrained triaxial shear tests after cyclic loading，were conducted. The results show that the static stress ratio mainly affects the upper limit of pore pressure development，while the cyclic stress ratio not only affects the upper limit of pore pressure development，but also affects the strain value at the end of the cycle，which is more obvious in calcareous sand. The development of pore pressure is negatively correlated with the static stress ratio and positively correlated with the cyclic stress ratio. The cumulative pore pressure of calcareous sand is greater than that of quartz sand under the same cyclic loading，making it more prone to liquefaction under high cyclic stress ratios. After undrained cyclic traxial tests with different static stress ratios and cyclic stress ratios，the peak deviatoric stress of sand decreases. It is worth noting that compared with the end of undrained cyclic traxial tests，the increase of static stress ratio is beneficial to the improvement of shear strength of calcareous sand after cyclic loading to a certain extent，while the increase of cyclic stress ratio is beneficial to the improvement of shear strength of quartz sand after cyclic loading to a certain extent.

Key words： soil mechanics calcareous sand cyclic loading static stress ratio cyclic stress ratio shear strength

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	Articles by authors
	LYU Yaru1
	DING Sichao1
	LI Xin1
	SU Yuchen1
	WANG Yuan2
	ZUO Dianjun3

Cite this article:

LYU Yaru1,DING Sichao1,LI Xin1, et al. Cyclic shear characteristics and shear strength weakening mechanism of calcareous sand[J]. , 2024, 43(11): 2811-2822.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2024.0364 OR https://rockmech.whrsm.ac.cn/EN/Y2024/V43/I11/2811

[1]	LYU Y R，LI X，WANG Y. Particle breakage of calcareous sand at high strain rates[J]. Powder Technology，2020，366：776-787.
[2]	LI X，LYU Y R，SU Y C，et al. Coupling effects of morphology and inner pore distribution on the mechanical response of calcareous sand particles[J]. Journal of Rock Mechanics and Geotechnical Engineering，2023，15(6)：1 565-1 579.
[3]	LYU Y R，LI F，LIU Y W，et al. Comparative study of coral sand and silica sand in creep under general stress states[J]. Canadian Geotechnical Journal，2017，54(11)：1 601-1 611.
[4]	吕亚茹，王冲，黄厚旭，等. 珊瑚砂细观颗粒结构及破碎特性研究[J]. 岩土力学，2021，42(2)：352-360.(LYU Yaru，WANG Chong，HUANG Houxu，et al. Study on particle structure and crushing behaviors of coral sand[J]. Rock and Soil Mechanics，2021，42(2)：352-360.(in Chinese))
[5]	LYU Y R，LI X，FAN C F，et al. Effects of internal pores on the mechanical properties of marine calcareous sand particles[J]. Acta Geotechnica，2021，16(10)：3 209-3 228.
[6]	纪文栋，张宇亭，裴文斌，等. 加载方式和应力水平对珊瑚砂颗粒破碎影响的试验研究[J]. 岩石力学与工程学报，2018，37(8)： 1 953-1 961.(JI Wendong，ZHANG Yuting，PEI Wenbin，et al. Influence of loading method and stress level on the particle crushing of coral calcareous sand[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(8)：1 953-1 961.(in Chinese))
[7]	SHAHNAZARI H，REZVANI R. Effective parameters for the particle breakage of calcareous sands：An experimental study[J]. Engineering Geology，2013，159：98-105.
[8]	虞海珍，汪稔. 钙质砂动强度试验研究[J]. 岩土力学，1999，20(4)：6-11.(YU Haizhen，WANG Ren. Experimental study on dynamic strength of calcareous sand[J]. Rock and Soil Mechanics，1999，20(4)：6-11.(in Chinese))
[9]	钟丽，陈鑫莲，刘晓璇，等. 不同应力路径下钙质砂的力学及变形特性试验研究[J]. 岩土力学，2023，44(10)：2 929-2 941. (ZHONG Li，CHEN Xinlian，LIU Xiaoxuan，et al. Experimental study on the mechanical and deformation characteristics of calcareous sand under different stress paths[J]. Rock and Soil Mechanics，2023，44(10)：2 929-2 941.(in Chinese))
[10]	张季如，陈敬鑫，王磊，等. 三轴剪切过程中排水条件对钙质砂颗粒破碎、变形和强度特性的影响[J]. 岩土力学，2024，45(2)：375-384.(ZHANG Jiru，CHEN Jingxin，WANG Lei，et al. Effect of drainage conditions during triaxial shearing on particle breakage，deformation，and strength properties of calcareous sand[J]. Rock and Soil Mechanics，2024，45(2)：375-384.(in Chinese))
[11]	沈扬，梁晖，葛华阳，等. 主应力轴变化下各向异性钙质砂的定轴剪切特性[J]. 岩土工程学报，2020，42(增1)：22-26.(SHEN Yang，LIANG Hui，GE Huayang，et al. Fixed-axis shear characteristics of anisotropic calcareous sand under variation of principal stress axes[J]. Chinese Journal of Geotechnical Engineering，2020，42(Supp.1)：22-26.(in Chinese))
[12]	WANG G，WANG Z N，YE Q G，et al. Particle breakage evolution of coral sand using triaxial compression tests[J]. Journal of Rock Mechanics and Geotechnical Engineering，2021，13(2)：321-334.
[13]	DING Z，HE S H，SUN Y F，et al. Comparative study on cyclic behavior of marine calcareous sand and terrigenous siliceous sand for transportation infrastructure applications[J]. Construction and Building Materials，2021，283：122740.
[14]	HE S H，DING Z，XIA T D，et al. Long-term behaviour and degradation of calcareous sand under cyclic loading[J]. Engineering Geology，2020，276：105756.
[15]	WANG X，CUI J，ZHU C Q，et al. Experimental study of the mechanical behavior of calcareous sand under repeated loading- unloading[J]. Bulletin of Engineering Geology and the Environment，2021，80(4)：3 097-3 113.
[16]	KARGAR S H R，SALEHZADEH H，SHAHNAZARI H. Post-cyclic behavior of carbonate sand of the northern coast of the Persian Gulf[J]. Marine Georesources and Geotechnology，2016，34(2)：169-180.
[17]	刘汉龙，胡鼎，肖杨，等. 钙质砂动力液化特性的试验研究[J]. 防灾减灾工程学报，2015，35(6)：707-725.(LIU Hanlong，HU Ding，XIAO Yang，et al. Test study on dynamic liquefaction characteristics of calcareous sand[J]. Journal of Disaster Prevention and Mitigation Engineering，2015，35(6)：707-725.(in Chinese))
[18]	王刚，查京京，魏星. 循环三轴应力路径下钙质砂颗粒破碎演化规律[J]. 岩土工程学报，2019，41(4)：755-760.(WANG Gang，ZHA Jingjing，WEI Xing. Evolution of particle crushing of carbonate sands under cyclic triaxial stress path[J]. Chinese Journal of Geotechnical Engineering，2019，41(4)：755-760.(in Chinese))
[19]	高冉，叶剑红. 中国南海吹填岛礁钙质砂动力特性试验研究[J]. 岩土力学，2019，40(10)：3 897-3 908.(GAO Ran，YE Jianhong. Experimental investigation on the dynamic characteristics of calcareous sand from the reclaimed coral reef islands in the South China Sea[J]. Rock and Soil Mechanics，2019，40(10)：3 897- 3 908.(in Chinese))
[20]	何绍衡，刘志军，夏唐代，等. 长期循环荷载下珊瑚砂累积变形特性试验研究[J]. 岩土工程学报，2019，41(增2)：161-164.(HE Shaoheng，LIU Zhijun，XIA Tangdai，et al. Experimental study on cumulative deformation characteristics of coral sand under long-term cyclic loading[J]. Chinese Journal of Geotechnical Engineering，2019，41(Supp.2)：161-164.(in Chinese))
[21]	梁珂，何杨，陈国兴. 南沙珊瑚砂的动剪切模量和阻尼比特性试验研究[J]. 岩土力学，2020，41(1)：23-31.(LIANG Ke，HE Yang，CHEN Guoxing. Experimental study of dynamic shear modulus and damping ratio characteristics of coral sand from Nansha Islands[J]. Rock and Soil Mechanics，2020，41(1)：23-31.(in Chinese))
[22]	沈扬，马英豪，芮笑曦. 波浪荷载作用下饱和钙质砂孔压特性及累积损失能量试验研究[J]. 岩土力学，2023，44(8)：2 195-2 204. (SHEN Yang，MA Yinghao，RUI Xiaoxi. Experimental study on pore water pressure characteristics and accumulated loss energy of saturated calcareous sand under wave loading[J]. Rock and Soil Mechanics，2023，44(8)：2 195-2 204.(in Chinese))
[23]	中华人民共和国国家标准编写组. GB/T 50123－2019 土工试验方法标准[S]. 北京：中国计划出版社，2019.(The National Standards Compilation Group of People?s Republic of China. GB/T 50123－2019 Standard for soil test method[S]. Beijing：China Planning Press，2019.(in Chinese))
[24]	LIU L，YAO X F，JI Z P，et al. Cyclic behavior of calcareous sand from the South China Sea[J]. Journal of Marine Science and Engineering，2021，9(9)：1 014.
[25]	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.(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))
[26]	WANG X，ZHU C Q，WANG X Z，et al. Study of dilatancy behaviors of calcareous soils in a triaxial test[J]. Marine Georesources and Geotechnology，2019，37(9)：1 057-1 070.
[27]	袁征，余克服，王英辉，等. 珊瑚礁岩土的工程地质特性研究进展[J]. 热带地理，2016，36(1)：87-93.(YUAN Zheng，YU Kefu，WANG Yinghui，et al. Research progress in the engineering geological characteristics of coral reefs[J]. Tropical Geography，2016，36(1)：87-93.(in Chinese))
[28]	单华刚，汪稔. 钙质砂中的桩基工程研究进展述评[J]. 岩土力学，2000，21(3)：299-304.(SHAN Huagang，WANG Ren. Development of study on pile in calcareous sand[J]. Rock and Soil Mechanics，2000，21(3)：299-304.(in Chinese))
[29]	张晨阳，谌民，胡明鉴，等. 细颗粒组分含量对钙质砂抗剪强度的影响[J]. 岩土力学，2019，40(增1)：195-202.(ZHANG Chenyang，CHEN Min，HU Mingjian，et al. Effect of fine particles content on shear strength of calcareous sand[J]. Rock and Soil Mechanics，2019，40(Supp.1)：195-202.(in Chinese))
[30]	吕亚茹，李治中，李浪. 高应力状态下钙质砂的一维压缩特性及试验影响因素分析[J]. 岩石力学与工程学报，2019，38(增1)： 3 142-3 150.(LYU Yaru，LI Zhizhong，LI Lang. One-dimensional compression behavior of calcareous sand and its experimental technology under high stress conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.1)：3 142-3 150.(in Chinese)).
[31]	李博，陈烈，余闯. 循环荷载作用下钙质砂液化及体变特性[J]. 地震工程与工程振动，2023，43(6)：174-182.(LI Bo，CHEN Lie，YU Chuang. Liquefaction characteristics and volume change of calcareous sand under cyclic loading[J]. Earthquake Engineering and Engineering Dynamics，2023，43(6)：174-182.(in Chinese))
[32]	李能，吴杨，周福霖，等. 岛礁吹填珊瑚砂不排水单调和循环剪切特性试验[J]. 中国公路学报，2023，36(8)：152-161.(LI Neng，WU Yang，ZHOU Fulin，et al. Experiment of undrained monotonic and cyclic shear characteristics of hydraulic filled coral sand from reef island[J]. China Journal of Highway and Transport，2023，36(8)：152-161.(in Chinese)).
[33]	刘萌成，陈茂林，王涓. 钙质砂固结排水剪切特性三轴试验[J]. 中国公路学报，2023，36(1)：47-57.(LIU Mengcheng，CHEN Maolin，WANG Juan. Investigation of shear behavior of calcareous sand in consolidation and drained triaxial test[J]. China Journal of Highway and Transport，2023，36(1)：47-57.(in Chinese))
[34]	WU Y，LI N，WANG X Z，et al. Experimental investigation on mechanical behavior and particle crushing of calcareous sand retrieved from South China Sea[J]. Engineering Geology，2021，280：105932.
[35]	吴杨，吴毅航，马林建，等. 南海岛礁珊瑚砂砾混合料动力特性试验研究[J]. 岩土工程学报，2024，46(1)：63-71.(WU Yang，WU Yihang，MA Linjian，et al. Experimental study on dynamic characteristics of calcareous sand-gravel mixtures from islands in the South China Sea[J]. Chinese Journal of Geotechnical Engineering，2024，46(1)：63-71.(in Chinese))
[36]	THEVANAYAGAM S，MOHAN S. Intergranular state variables and stress-strain behaviour of silty sands[J]. Géotechnique，2000，50(1)：1-23.
[37]	王帅，雷学文，孟庆山，等. 竖向循环荷载下钙质砂单桩沉降特性模型试验研究[J]. 长江科学院院报，2021，38(6)：93-101. (WANG Shuai，LEI Xuewen，MENG Qingshan，et al. Model tests on accumulated settlement of single pile in calcareous sand under vertical cyclic loads[J]. Journal of Changjiang River Scientific Research Institute，2021，38(6)：93-101.(in Chinese))