应变控制下舟山岱山海相软土动弹性模量及阻尼比试验研究

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Abstract The strain controlled dynamic triaxial tests to measure the dynamic moduli and the damping ratios were conducted on intact marine samples from sea area at Daishan，in Zhoushan Archipelago. The experimental results show that the hysteresis curves of Zhoushan Daishan marine sediments are not completely closed loops and are strain softening. The values of dynamic modulus and damping ratio under certain strain amplitude fluctuate around constant values respectively which are designated as the representative values of the dynamic moduli and damping ratios under the corresponding strain amplitude. As such，relationships between dynamic moduli and strain amplitude and between damping ratio and strain amplitude under different confining pressures are established，which converge asymptotically. Hardin-Drnevich(H-D) model is modified to fit the experimental data. Meanwhile，the resonant column tests are conducted to measure the elastic moduli of the marine sediments under wave loading. The results from two tests show that the marine sediments from Daishan are sensitive to the confining pressure.

Key words： soil mechanics marine sediments dynamic triaxial tests modified Hardin-Drnevich(H-D) model dynamic elastic modulus damping ratio

Received: 28 November 2013

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https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I7/1503

[1]	HENKEL D J. The role of waves in causing submarine landslides[J]. Geotechnique，1970，20(1)：75-80. " target="_blank">
[2]	COTECCHIA F，CAFARO F，ARESTA B. Structure and mechanical response of sub-Apennine Blue Clays in relation to their geological and recent loading history[J]. Geotechnique，2007，57(2)：167-180. " target="_blank">
[3]	LUNNE T，LONG M. Review of long seabed samplers and criteria for new sampler design[J]. Marine Geology，2006，226(1/2)：145-165. " target="_blank">
[4]	VIJAY K P，SANJEEV K. Role of soil dynamics in the offshore environment[C]// Proceedings of the thirteenth International Offshore and Polar Engineering Coference. Honolulu，Hawaii，USA：the International Society of Offshore and Polar Engineers，2003：530-537. " target="_blank">
[5]	RASHIDIAN V，HASSANLOURAD M. Predicting the shear behavior of cemented and uncemented carbonate sands using a genetic algorithm—based artificial neural network[J]. Geotechnical and Geological Engineering，2013，31(4)：1 231-1 248. " target="_blank">
[6]	ISHIBASHI I，ZHANG X. Unified dynamic shear moduli and damping ratios of sand and clay[J]. Soils and Foundations，1993，33(1)：182-191. " target="_blank">
[7]	陈国兴，刘雪珠. 南京及邻近地区新近沉积土的动剪切模量和阻尼比的试验研究[J]. 岩石力学与工程学报，2004，23(8)：1 403-1 410. (CHEN Guoxing，LIU Xuezhu. Testing study on ratio of dynamic shear moduli and ratio of damping for recently deposited soils in Nanjing and its adjacent areas[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(8)：1 403-1 410.(in Chinese)) " target="_blank">
[8]	TRANDAFIRL A C，ERICKSON B A. Confining stress effects on the stress-strain response of EPS geofoam in cyclic triaxial tests[C]// HAN J，ALZAMORA D E，ed. Proceedings of Geo-Frontiers 2011：Advances in Geotechnical Engineering. Dallas，Texas，USA：American Society of Civil Engineers，2011：2 084-2 091. " target="_blank">
[9]	HARDIN B O，DRNEVICH V P. Shear modulus and damping in soils：design equation and curves[J]. Journal of Soil Mechanics and Foundation Division ASCE，1972，98(7)：667-692. " target="_blank">
[10]	张建民，王刚，陈扬. 海岸岩土工程的物理与数值模拟方法[J].岩土力学，2004，25(增2)：61-74.(ZHANG Jianmin，WANG Gang，CHEN Yang. Physical and numerical modeling methods in coastal geotechnical engineering[J]. Rock and Soil Mechanics，2004，25(Supp.2)：61-74.(in Chinese)) " target="_blank">
[11]	陈国兴，谢君斐，张克绪. 土的动模量和阻尼比的经验估计[J]. 地震工程与工程振动，1995，15(1)：73-84.(CHEN Guoxing，XIE Junfei，ZHANG Kexu. The empirical evaluation of soil moduli and damping ratio for dynamic analysis[J]. Earthquake Engineering and Engineering Vibration，1995，15(1)：73-84.(in Chinese)) " target="_blank">
[12]	王军，蔡袁强，徐长节，等. 循环荷载作用下饱和软黏土应变软化模型研究[J]. 岩石力学与工程学报，2007，26(8)：1 713-1 719. (WANG Jun，CAI Yuanqiang，XU Changjie，et al. Study on strain softening model of saturated soft clay under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(8)：1 713-1 719. (in Chinese)) " target="_blank">
[13]	王军，蔡袁强. 循环荷载作用下饱和软黏土应变累积模型研究[J]. 岩石力学与工程学报，2008，27(2)：331-338.(WANG Jun，CAI Yuanqiang. Study on accumulative plastic strain model of soft clay under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(2)：331-338.(in Chinese))
[14]	王军，蔡袁强，丁光亚，等. 双向激振下饱和软黏土动模量与阻尼变化规律试验研究[J]. 岩石力学与工程学报，2010，29(2)：423-432.(WANG Jun，CAI Yuanqiang，DING Guangya，et al. Experimental research on changing rules of dynamic modulus and damping ratio of saturated soft clay under bidirectional exciting cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(2)：423-432.(in Chinese))
[15]	王军，陈张林，蔡袁强，等. 基于修正Masing准则的萧山软黏土动应力-应变关系研究[J]. 岩石力学与工程学报，2007，26(1)：108-114.(WANG Jun，CHEN Zhanglin，CAI Yuanqiang，et al. Study on dynamic stress-strain relationship of Xiaoshan soft clay based on modified Masing rules[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(1)：108-114.(in Chinese))
[16]	王军，谷川，蔡袁强，等. 动三轴试验中饱和软黏土的孔压特性及其对有效应力路径的影响[J]. 岩石力学与工程学报，2012，31(6)：1 290-1 296.(WANG Jun，GU Chuan，CAI Yuanqiang，et al. Behavior of pore water pressure in dynamic triaxial tests of saturated soft clay and its effect on effective stress path[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(6)：1 290-1 296.(in Chinese)) " target="_blank">
[17]	王军，蔡袁强. 初始剪应力与加荷速率耦合作用下饱和软黏土强度特性试验研究[J]. 岩石力学与工程学报，2008，27(增2)：3 321- 3 327.(WANG Jun，CAI Yuanqiang. Coupling effects of initial shear stress and loading rate on strength behaviors of saturated soft clay[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.2)：3 321-3 327.(in Chinese)) " target="_blank">
[18]	罗潋葱，秦伯强，朱广伟. 太湖沉积物的分布和动力扰动下最大侵蚀深度的确定[J]. 泥沙研究，2004，(1)：9-14.(LUO Liancong，QIN Boqiang，ZHU Guangwei. Sediment distribution and the maximum resuspension depth with disturbance in Taihu lake[J]. Chinese Journal of Sediment Research，2004，(1)：9-14.(in Chinese)) " target="_blank">
[19]	黄世昌，周骥，谢亚力，等. 浙江省海塘塘顶高程的确定[J]. 海洋工程，2001，19(4)：67-71.(HUANG Shichang，ZHOU Ji，XIE Yali，et al. Determination of seawall crest elevation in Zhejiang Province[J]. Chinese Journal of Ocean Engineering，2001，19(4)：67-71.(in Chinese)) " target="_blank">
[20]	ZHONG X G，ZENG X，ROSE J G. Shear modulus and damping ratio of rubber-modified asphalt mixes and unsaturated subgrade soils[J]. Journal of Materials in Civil Engineering，2002，14(6)：496-502. " target="_blank">
[21]	蒋通，刑海灵. 围压对土动剪模量和阻尼比影响的简化计算方法[J]. 岩石力学与工程学报，2007，26(7)：1 432-1 437.(JIANG Tong，XING Hailing. A simple method considering effects of confining pressure on dynamic shear moduli and damping ratio[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(7)：1 432- 1 437.(in Chinese)) " target="_blank">
[22]	王亚军，金峰，张楚汉，等. 舟山海域海相砂土循环激振下的液化破坏孔压模型[J]. 岩石力学与工程学报，2013，32(3)：582-597.(WANG Yajun，JIN Feng，ZHANG Chuhan，et al. Liquefaction failure pore-pressure models of Zhoushan marine sandy soil under cyclic exciting loading[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(3)：582-597.(in Chinese))