Advanced Search
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊
Volume 41 Issue S2
Turn off MathJax
Article Contents
Abstract
References
Related Articles
WEI Lai, LU Yu-xia, ZHOU Zheng-hua, WANG Qian, YANG Bo, TANG Hong-min, LI Tong-lin. Dynamic characteristics of unsaturated loess and their influences on ground vibration parameters of sites[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 145-148. DOI: 10.11779/CJGE2019S2037
Citation: WEI Lai, LU Yu-xia, ZHOU Zheng-hua, WANG Qian, YANG Bo, TANG Hong-min, LI Tong-lin. Dynamic characteristics of unsaturated loess and their influences on ground vibration parameters of sites[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 145-148. DOI: 10.11779/CJGE2019S2037
shu

Dynamic characteristics of unsaturated loess and their influences on ground vibration parameters of sites

  • 1. Key Laboratory of Loess Earthquake Engineering, Lanzhou Institute of Seismology, CEA, Lanzhou 730000, China;
    2. Geotechnical Disaster Prevention Engineering Technology Research Center of Gansu, Lanzhou 730000, China;
    3. Earthquake Administration of Gansu Province, Lanzhou 730000, China;
    4.Nanjing Tech University, Nanjing 210009, China

More Information
  • Received Date: April 27, 2019
  • Published Date: July 19, 2019
    Graphical Abstract
    • Abstract
  • The dynamic triaxial tests on the unsaturated loess in Xiji region of Ningxia under different water contents are carried out. Based on the analysis of the influences of water content on the dynamic characteristics of loess, the influences of water content of soil on the surface motion intensity and characteristics of a loess sites are studied by using the method of soil seismic response analysis. The results show that with the increase of water content, the dynamic shear modulus decreases and the damping ratio increases. When the water content reaches the plastic limit, the influences of change of water content are obviously reduced. On the whole, with the increase of input seismic motion and the increase of water content, the PGA and the values of reaction spectral in the loess site increase. And the influences of water content on the ground motion intensity and characteristics are different in different sites. For the thinner site, when the water content reaches 20%, and the input seismic motion is greater than 50 gal, the magnification begins to decrease, and with the increase of the input seismic motion, the decrease amplitude increases, while the value of the long period component of the reaction spectrum increases, and when the input seismic motion of thicker covering site reaches 300 gal, the magnification decreases when the water content reaches 20%, but the value of reaction spectra increased obviously after 0.3 s.
    • FullText(HTML)
    • References (6)
  • [1]
    卢育霞, 石玉成, 万秀红, 等. 近地表速度结构对场地强地震动特征的影响[J]. 地震工程学报, 2014, 36(4): 813-819.
    (LU Yu-xia, SHI Yu-cheng, WAN Xiu-hong, et al.Influence of near-surface Velocity Structure on Site characteristics of Strong Ground Motion[J]. China Earthquake Engineering Journal, 2014, 36(4): 813-819. (in Chinese))
    [2]
    李启鹞, 程显尧, 蔡东艳. 地震荷载下黄土的动力特性[J].西安建筑科技大学学报(自然科学版), 1985(3): 9-37.
    (LI Qi-yao, CHENG Xian-rao, CAI Dong-yan.Dynamic characteristics of loess under seismic load[J]. Journal of Xi'an institute of Metallurgy and Construction Engineering, 1985(3): 9-37. (in Chinese))
    [3]
    骆亚生, 田堪良. 非饱和黄土的动剪模量与阻尼比[J]. 水利学报, 2005(7): 830-834.
    (LUO Ya-sheng, TIAN Kan-liang.Dynamic shear modulus and damping ratio of unsaturated loess[J]. Journal of Hydraulic Engineering, 2005(7): 830-834. (in Chinese))
    [4]
    王志杰, 骆亚生, 王瑞瑞, 等. 不同地区原状黄土动剪切模量与阻尼比试验研究[J]. 岩土工程学报, 2010, 32(9): 1464-1469.
    (WANG Zhi-jie, LUO Ya-sheng, WANF Rui-rui, et al.Experimental study on dynamic shear modulus and damping ratio of undisturbed loess in different regions[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(9): 1464-1469. (in Chinese))
    [5]
    王兰民, 蒲小武, 吴志坚, 等. 地震和降雨耦合作用下黄土边坡动力响应的振动台试验研究[J]. 岩土工程学报, 2018, 40(7): 1287-1293.
    (WANG Lan-min, PU Xiao-wu, WU Zhi-jian, et al.Shaking table tests on dynamic response of loess slopes under coupling effects of earthquakes and rainfalls[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(7): 1287-1293. (in Chinese))
    [6]
    宋丙辉. 兰州黄土的动力特性及其场地地震动反应[D]. 兰州: 兰州大学, 2017.
    (SONG Bing-hui.Study on the dynamic properties of Lanzhou loess and associated site response analysis[D]. Lanzhou: Lanzhou University, 2017. (in Chinese))
    • Related Articles

  • Related Articles

    [1]LIANG Xiaomin, GU Xiaoqiang, ZHAI Chongpu, WEI Deheng. Anisotropic wave velocities of granular materials and microscopic fabric using X-ray computed tomography[J]. Chinese Journal of Geotechnical Engineering, 2024, 46(7): 1398-1407. DOI: 10.11779/CJGE20230425
    [2]ZHANG He-nian, CHEN Liang, LI Xiong-wei, XI Pei-sheng, MU Lin, HU Cai-yun. Ratio and mechanism of activated magnesium oxide carbonized raw earth block materials[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(S2): 233-236. DOI: 10.11779/CJGE2021S2055
    [3]YAO Jun-kai, YE Yang-sheng, WANG Peng-cheng, CHEN Feng, CAI De-gou. Subgrade heave of sulfate attacking on cement-stabilized filler[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(4): 782-788. DOI: 10.11779/CJGE201904024
    [4]XU Xiao-li, GAO Feng, ZHANG Zhi-zhen, ZHANG Chuan-hu. Energy and structural effects of granite after high temperature[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(5): 961-968. DOI: 10.11779/CJGE201405022
    [5]ZHOU Qiao-yong, XIONG Bao-lin, YANG Guang-qing, LIU Wei-chao. Microstructure of low liquid limit silt[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 439-444.
    [6]YU Hui, DING Xuan-ming, KONG Gang-qiang, ZHENG Chang-jie. Comparative FEM analysis of deformation properties of expressway widening projects with cast-in-situ X-shaped concrete piles and circular pile[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk2): 170-176.
    [7]WANG Cheng-hu, WANG Hong-cai, LIU Li-peng, SUN Dong-sheng, ZHAO Wei-hua. Effects of high temperatures on mechanical performance of basaltic tuff and mechanism analysis[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(10): 1827-1835.
    [8]Micro-experiments on a soft ground improved by cement-mixed soils with gypsum additive[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(8).
    [9]Full scale model tests on vertical bearing characteristics of cast-in-place X-section piles[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(6).
    [10]WU Yanqing, CAO Guangzhu, DING Weihua. Permeability experiment of sandstone under variable seepage pressures by using X-ray CT real-time observation[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(7): 780-785.
    • Supplements (0)

  • Cited by

    Periodical cited type(4)

    1. 王大兵，黄郁东，韩振中，徐考，崔文海，周苏华. 基于贝叶斯逻辑回归模型的边坡稳定性预测. 市政技术. 2023(10): 173-180 .
    2. 曾锃，赵树祥，葛龙进，潘卫平，李敏，殷国峰. 罗闸河二级水电站拱坝右岸边坡变形破坏机制研究及治理后评估. 岩土工程学报. 2021(S1): 171-175 . 本站查看
    3. 夏增选，李萍，曹博，李同录，沈伟，康海伟. 边坡可靠度的Bayes估计及后验稳健性. 河海大学学报(自然科学版). 2020(03): 238-244 .
    4. 谢永利，刘新荣，晏长根，杨忠平，李家春，周志军，岳夏冰. 特殊岩土体工程边坡研究进展. 土木工程学报. 2020(09): 93-105 .

    Other cited types(18)

Catalog

    Get Citation
    PDF
    XML
    Article views (264) PDF downloads (95) Cited by(22)
    Related
    Copyright © 2010 Editorial By Chinese Journal of Geotechnical Engineering 苏ICP备05007122号-11公安联网备案号：32010602011255
    Editorial Office address：34 Hujuguan,Nanjing 210024,ChinaPostal Code：210024Tel：025-85829534，85829556E-mail: ge@nhri.cn

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return