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山东大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (5): 35-41.doi: 10.6040/j.issn.1672-3961.0.2013.345

• 土木工程 • 上一篇    下一篇

非饱和土动剪模量与阻尼比影响因素试验

付昌1,2,3, 蒋明镜1,2,3, 申志福1,2,3, 王华宁4, 吴晓峰2,3   

  1. 1. 同济大学 土木工程防灾国家重点实验室, 上海 200092;
    2. 同济大学 地下建筑与工程系, 上海 200092;
    3. 同济大学 岩土及地下工程教育部重点实验室, 上海 200092;
    4. 同济大学 航空航天与力学学院, 上海 200092
  • 收稿日期:2013-11-19 修回日期:2014-09-24 发布日期:2013-11-19
  • 通讯作者: 蒋明镜(1965-), 男, 江苏如皋人, 教授, 博导, “同济大学特聘教授”, 主要研究方向为天然结构性黏土、砂土、非饱和土、太空土和深海能源土宏观微观试验、本构模型和数值分析.E-mail:mingjing.jiang@tongji.edu.cn E-mail:mingjing.jiang@tongji.edu.cn
  • 作者简介:付昌(1989-), 男, 河南新乡人, 硕士研究生, 主要研究方向为宏观微观土力学.E-mail:fuchang521@163.com
  • 基金资助:
    国家杰出青年科学基金资助项目(51025932);国家自然科学基金资助项目(51179128)

Experiments on influence factors of dynamic shear modulus and damping ratio of unsaturated soil

FU Chang1,2,3, JIANG Mingjing1,2,3, SHEN Zhifu1,2,3, WANG Huaning4, WU Xiaofeng2,3   

  1. 1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;
    2. Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China;
    3.Key Laboratory of Geotechnical & Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;
    4. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
  • Received:2013-11-19 Revised:2014-09-24 Published:2013-11-19

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摘要： 为指导北京某航天着陆冲击试验床的快速铺设,借助DRNEVICH LONG-TOR型共振柱仪开展了若干组试验,研究了含水率、干密度、围压对动剪切模量与阻尼比的影响。试验结果表明:含水率较小时,动剪切模量随含水率增大而增大,而阻尼比无明显变化;干密度增大,动剪切模量增大,阻尼比有减小的趋势;围压增大,动剪切模量增大,阻尼比有减小的趋势。对12组试验结果进行拟合表明,阻尼比与动剪切模量比之间存在很好的线性关系。同时,通过与前人研究对比表明,不同土体其动力特性不同,因此在着陆场地铺设前对土体动力特性进行研究很有必要。

关键词: 干密度, 粉土, 动剪切模量, 含水率, 阻尼比, 围压

Abstract: In order to guide the quick preparation of an experimental landing ground in Beijing, several resonant column tests were conducted on unsaturated soils sampled in-situ to study the effects of moisture content, dry density and confining pressure on dynamic shear modulus and damping ratio by using DRNEVICH LONG-TOR resonant column apparatus. The results showed that the dynamic shear modulus increased with moisture content increasing, while the damping ratio showed negligible correlation with moisture in low moisture content range. The dynamic shear modulus increased while the damping ratio tended to decrease due to either the increasing of dry density or confining pressure. The damping ratio and dynamic shear modulus ratio showed perfectly correlated linearity. The dynamic mechanical responses of different soil were different with different soil, and this was necessary to study the dynamic mechanical responses before landing ground preparation.

Key words: confining pressure, dynamic shear modulus, silty soil, damping ratio, moisture content, dry density

中图分类号: 

  • TU411
[1] 杨先建.工业环境振动中的土动力学问题[J].岩土工程学报, 1992, 14(2): 82-88.
[2] 杜修力, 路德春.土动力学与岩土地震工程研究进展[J].岩土力学, 2011, 32(增刊2): 10-20.DU Xiuli, LU Dechun.Advances in soil dynamics and geotechnical earthquake engineering[J].Rock and Soil Mechanics, 2011, 32(Supp 2): 10-20.
[3] 刘汉龙, 余湘娟.土动力学与岩土地震工程研究进展[J].河海大学学报, 1999, 27(1): 6-15.LIU Hanlong, LU Dechun.Advance in soil dynamics and geotechnical earthquake engineering[J].Journal of Hohai University, 1999, 27(1): 6-15.
[4] 孟上九, 陈卓识.轨道交通荷载下路基土的动力学相关进展[J].世界地震工程, 2010, 26(增刊): 373-377.MENG Shangjiu, CHEN Zhuoshi.Advances on soil dynamics of subgrades under rail traffic loading[J].World Earthquake Engineering, 2010, 26(Supp 1): 373-377.
[5] 孙静, 袁晓铭.土的动模量和阻尼比研究述评[J].世界地震工程, 2003, 19(1): 88-95.SUN Jing, YUAN Xiaoming.A state-of-art of research on dynamic modulus and damping ratio of soils[J].World Earthquake Engineering, 2003, 19(1):88-95.
[6] 孙静, 袁晓铭, 孙锐.土动剪切模量和阻尼比的推荐值和规范值的合理性比较[J].世界地震工程, 2004, 24(2): 125-133.SUN Jing, YUAN Xiaoming, SUN Rui.Reasonability comparison between recommended and code values of dynamic shear modulus and damping ratio of soils[J].World Earthquake Engineering, 2004, 24(2): 125-133.
[7] 王绍博, 丁海平.土动力参数对土层动力反应的影响[J].地震工程与工程震动, 2001, 21(1):105-108.WANG Shaobo, DING Haiping.Effect of soil dynamic parameters on seismic response of soil layer[J].Earthquake and Engineering Vibration, 2001, 21(1):105-108.
[8] 陈国兴, 刘雪珠, 朱定华, 等.南京新近沉积土动剪切模量比与阻尼比的试验研究[J].岩土工程学报, 2006, 28(8): 1023-1027.CHEN Guoxing, LIU Xuezhu, ZHU Dinghua, et al.Experimental studies on dynamic shear modulus ratio and damping ratio of recently deposited soils in Nanjing[J].Chinese Journal of Geotechnical Engineering, 2006, 28(8):1023-1027.
[9] 陈国兴, 王炳辉, 刘建达.新近沉积土的动剪切模量和阻尼比试验研究[J].地下空间与工程学报, 2008, 4(3):539-594.CHEN Guoxing, WANG Binghui, LIU Jianda.Experimental study on dynamic shear modulus and damping ratio of recently deposited soils[J].Chinese Journal of Underground Space and Engineering, 2008, 4(3):539-594.
[10] 何晓民, 陈志强, 张婷.武汉砂土动剪切模量与阻尼比的试验研究[J].世界地震工程, 2010, 26(增刊):41-45.HE Xiaomin, CHEN Zhiqiang, ZHANG Ting.Experimental studies on dynamic shear modulus and damping ratio of sandy soil in Wuhan[J].World Earthquake Engineering, 2010, 26(Supp1):41-45.
[11] 张宇, 余飞, 陈善雄, 等.CAS-1 模拟月壤动剪切模量与阻尼比的试验研究[J].岩土力学, 2014, 35(1): 74-82.ZHANG Yu, YU Fei, CHEN Shanxiong, et al.Experimental study of dynamic shear modulus and damping ratio of CAS-1 lunar soil simulant[J].Rock and Soil Mechanics, 2014, 35(1):74-82.
[12] 李剑, 陈善雄, 姜领发, 等.重塑红粘土动剪切模量与阻尼比的共振柱试验[J].四川大学学报:工程科学版, 2013, 45(4): 62-68.LI Jian, CHEN Shanxiong, Jiang Ling-fa, et al.Resonant column test on dynamic shear modulus and damping ratio of the remolded red clay[J].Journal of Sichuan University:English Science Edition, 2013, 45(4): 62-68.
[13] 徐亦敏, 姜朴.在土工测试中共振柱的应用[J].河海大学学报, 1991, 19(6):36-41.XU Yimin, JIANG Pu.Application of resonant column apparatus in geotechnical testing[J].Journal of Hehai University, 1991, 11(6):36-41.
[14] 王瑞芳, 张三定, 龚福洪, 等.动三轴试验在武汉地铁二号线勘察中的应用与分析[J].铁道建筑, 2010, 6:55-57.
[15] 孙仲林, 党进谦, 樊恒辉, 等.分散性土动剪切模量影响因素的试验研究[J].岩土力学, 2012, 33(12):3669-3673.SUN Zhonglin, DANG Jinqian, FAN Henghui, et al.Experimental research on factors influencing dynamic shear modulus of dispersive clay[J].Rock and Soil Mechanics, 2012, 33(12):3669-3673.
[16] 孙锐, 陈红娟, 袁晓铭.土的非线性动剪切模量比和阻尼比不确定性分析[J].岩土工程学报, 2010, 32(8):1228-1235.SUN Rui, CHEN Hongjuan, YUAN Xiaoming.Uncertainty of non-linear dynamic shear modular ratio and damping ratio of soils[J].Chinese Journal of Geotechnical Engineering, 2010, 32(8):1228-1235.
[17] 尚守平, 卢华喜, 任慧, 等.粉质粘土动剪切模量的试验对比研究[J].岩土工程学报, 2006, 28(3): 410-414.SHANG Shouping, LU Huaxi, REN Hui, et al.Comparative study on dynamic shear modulus of silty clay[J].Chinese Journal of Geotechnical Engineering,2006, 28(3): 410-414.
[18] 郑刚, 霍海峰, 雷华阳, 等.振动频率对饱和黏土动力特性的影响[J].天津大学学报:自然科学与工程技术版, 2013, 46(1): 38-43.ZHENG Gang, HUO Haifeng, LEI Huayang, et al.Contrastive Study on the Dynamic Characteristics of Saturated Clay in Different Vibration Frequencies[J].Journal of Tianjin University:Science and Technology, 2013, 46(1): 38-43.
[19] 高志兵, 谭慧明, 陶小三.饱和砂土最大动剪切模量的不同试验对比研究[J].防灾减灾工程学报, 2010, 30(1): 53-57.GAO Zhibing, TAN Huiming, TAO Xiaosan.Comparative analysis on dynamic shear modulus of saturated sandy soil is in laboratory and field tests[J].Journal of Disaster Prevention and Mitigation Engineering, 2010, 30(1): 53-57.
[20] 张国栋, 金星, 李勇.垃圾土动剪切模量和阻尼特性及影响因素分析[J].湖南大学学报:自然科学版, 2008, 35(11): 59-62.ZHANG Guodong, JIN Xing, LI Yong.Characteristic and influencing factors of dynamic modulus and damping of municipal soil waste[J].Journal of Hunan University:Natural Sciences, 2008, 35(11): 59-62.
[21] 中华人民共和国建设部.GB50021—2001岩土工程勘察规范[S].北京: 中国建筑工业出版社, 2009.Ministry of Communications of the Peoples Republic of China.GB50021—2001 Code for investigation of geotechnical engineering[S].Beijing: China Building Industry Press, 2009.
[22] 李华銮, 高培法, 穆乃敏, 等.分散性土的鉴别及改性试验[J].山东大学学报:工学版, 2010, 40(4): 92-95.LI Hualuan, GAO Peifa, MU Naimin, et al.Experiments on dispersive soil identification and modification[J].Journal of Shan Dong University:Engineering Science, 2010, 40(4): 92-95.
[23] 汤连生, 颜波, 张鹏程, 等.非饱和土中有效应力及有关概念的解说与辨析[J].岩土工程学报, 2006, 28(2): 216-220.TANG Liansheng, YAN Bo, ZHANG Pengcheng, et al.Definition and exploration for effective stress and related conception in unsaturated soil[J].Chinese Journal of Geotechnical Engineering, 2006, 28(2): 216-220.
[24] 吴世明.非饱和无粘性土的动剪切模量[J].岩土工程学报, 1985, 7(6): 33-41.WU Shiming.Dynamic modulus of partly saturated cohesionless soils[J].Chinese Journal of Geotechnical Engineering, 1985, 7(6): 33-41.
[25] HORN H M, DEERE D U.Frictional Characteristics of Minerals[J].Friction Characteristic of Minerals, Géotechnique, 1962, 12(4): 319-335.
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