基于离心振动台的堆积型滑坡加速度响应特征

doi:10.13722/j.cnki.jrme.2014.1273

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Abstract The law of acceleration response can be used to analyse landslide damage mechanisms and determine the earthquake influencing coefficient reasonably. Hence，a centrifuge shaking table model test of colluvial landslide was designed and carried out on a centrifuge shaking table at 50 gravitational accelerations in order to research its acceleration response characteristics. The model landslide was installed into a rigid aluminum alloy container with the length of 600mm，width of 400mm and height of 500mm. Bedrock wave (Qingxi wave) was inputted from the bottom of the model to study the dynamic response behavior of the colluvial landslide under earthquakes of different intensities by scaling the amplitude of the input seismic wave. And the bedrock wave was derived from the one recorded by Qingxi station during the Wenchuan earthquake. Results show that both the horizontal and vertical peak ground acceleration (PGA) amplification coefficients at landslide surface increase with the increasing height of landslide. The landslide shows an obvious elevation amplification effect，i.e.，the increasing rate of PGA amplification coefficients becomes notably larger approaching the slope crest. The acceleration response characteristics of the landslide surface and landslide body are significantly different under earthquake，which shows the surface effect. The horizontal acceleration at bedrock has amplification effect on input seismic wave along the height of the landslide，but it is weaken much weaker by comparison with that at the landslide surface. The slope crest has an obvious wave mode conversion phenomenon to the input seismic wave. The PGA amplification coefficients along landslide surface decrease with the increasing of the earthquake amplitudes. The results are helpful to reveal acceleration response characteristics of the same type of colluvial landslide under earthquake，and provided valuable references for determining the earthquake influence coefficient and analysing landslide damage mechanisms.

Key words： colluvial landslide centrifuge shaking table acceleration response model test

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1273 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/I7/8

[1] WANG L P，ZHANG G. Centrifuge model test study on pile reinforcement behavior of cohesive soil slopes under earthquake conditions[J]. Landslides，2014，11(2)：213–223. [2] 王根龙，张军慧，刘红帅. 汶川地震北川县城地质灾害调查与初步分析[J]. 中国地质灾害与防治学报，2009，20(3)：47–51.(WANG Genlong，ZHANG Junhui，LIU Hongshuai. Investigation and preliminary analysis of geologic disasters in Beichuan County induced by Wenchuan earthquake[J]. The Chinese Journal of Geological Hazard and Control，2009，20(3)：47–51.(in Chinese)) [3] 黄润秋，李为乐. “5. 12”汶川大地震触发地质灾害的发育分布规律研究[J]. 岩石力学与工程学报，2008，27(12)：2 585–2 592. (HUANG Runqiu，LI Weile. Research on development and distribution rules of geohazards induced by Wenchuan earthquake on 12th May，2008[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(12)：2 585–2 592.(in Chinese)) [4] 王福海，王运生，孙刚，等. 地震荷载作用下斜坡响应研究：以四川青川东山–狮子梁剖面为例[J]. 现代地质，2011，25(1)：142–150.(WANG Fuhai，WANG Yunsheng，SUN Gang，et al. Study on slope response under seismic loading taking the Dongshan-Shiziliang profile in Qingchuan，Sichuan as an example[J]. Geoscience，2011，25(1)：142–150. (in Chinese)) [5] 罗永红，王运生，王福海，等. 青川县桅杆梁斜坡地震动响应监测研究[J]. 工程地质学报，2010，18(1)：27–34.(LUO Yonghong，WANG Yunsheng，WANG Fuhai，et al. Monitoring of slope seismic response during aftershocks of Wenchuan earthquake in Qingchuan county[J]. Journal of Engineering Geology，2010，18(1)：27–34.(in Chinese)) [6] 柴红保，曹平，林杭. 竖直向上传播剪切波作用下边坡动力响应规律[J]. 中南大学学报 (自然科学版)，2011，42(4)：1 079–1 084. (CHAI Hongbao，CAO Ping，LIN Hang. Dynamic response laws of slope under vertical shear wave[J]. Journal of Central South University (Science and Technology)，2011，42(4)：1 079–1 084.(in Chinese)) [7] 陈晓利，李杨，洪启宇，等. 地震作用下边坡动力响应的数值模拟研究[J]. 岩石学报，2011，27(6)：1 899–1 908.(CHEN Xiaoli，LI Yang，HONG Qiyu，et al. Numerical simulation of earthquake effects on rock slope[J]. Acta Petrologica Sinica，2011，27(6)：1 899–1 908.(in Chinese)) [8] 冯志仁，刘红帅，于龙. 地震作用下含软弱夹层顺层岩质边坡表面放大效应研究[J]. 防灾减灾工程学报，2014，34(1)：96–100. (FENG Zhiren，LIU Hongshuai，YU Long. Surface amplification effect of bedding rocky slope with weak interlayer under earthquake[J]. Journal of Disaster Prevention and Mitigation Engineering，2014，34(11)：96–100.(in Chinese)) [9] BOUCKOVALAS G D，PAPADIMITRIOU A G. Numerical evalution of slope topography effects on seismic ground motion[J]. Soil Dynamics and Earthquake Engineering，2005，25(7)：547–558. [10] 徐光兴，姚令侃，高召宁，等. 边坡动力特性与动力响应的大型振动台模型试验研究[J]. 岩石力学与工程学报，2008，27(3)：624–632.(XU Guangxing， YAO Lingkan，GAO Zhaoning，et al. Large-scale shaking table model test study on dynamic characteristics and dynamic response of slope[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(3)：624–632. (in Chinese)) [11] 许强，陈建君，冯文凯，等. 斜坡地震响应的物理模拟试验研究[J]. 四川大学学报 (工程科学版)，2009，41(3)：266–272.(XU Qiang，CHEN Jianjun，FENG Wenkai，et al. Experimental study of the seismic response of slopes by physical modeling[J]. Journal of Sichuan University (Engineering Science)，2009，41(3)：266–272.(in Chinese)) [12] 杨国香，伍法权，董金玉，等. 地震作用下岩质边坡动力响应特性及变形破坏机制研究[J]. 岩石力学与工程学报，2012，31(4)：696–702.(YANG Guoxiang， WU Faquan，DONG Jinyu，et al. Study of dynamic response characters and failure mechanism of rock slope under earthquake[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(4)：696–702. (in Chinese)) [13] 于玉贞，邓丽军，李荣建. 砂土边坡地震动力响应离心模型试验[J]. 清华大学学报 (自然科学版)，2007，47(6)：789–792.(YU Yuzhen，DENG Lijun，LI Rongjian. Centrifuge model test of the seismic response behavior of a sand slope[J]. Journal of Tsinghua University (Science and Technology)，2007，47(6)：789–792.(in Chinese)) [14] WANG L，ZHANG G，ZHANG J M. Nail reinforcement mechanism of cohesive soil slopes under earthquake conditions[J]. Soils and Foundations，2010，50(4)：459–469. [15] 叶海林，郑颖人，杜修力，等. 边坡动力破坏特征的振动台模型试验与数值模拟[J]. 土木工程学报，2012，45(9)：128–135.(YE Hailin，ZHENG Yingren，DU Xiuli，et al. Shaking table model test and numerical analysis on dynamic failure characteristics of slope[J]. China Civil Engineering Journal，2012，45(9)：128–135. (in Chinese)) [16] YU Y，DENG L，SUN X，et al. Centrifuge modeling of a dry sandy slope response to earthquake loading[J]. Bulletin of Earthquake Engineering，2008，6(3)：447–461. [17] TABOADA-URTUZUASTEGU V M，MARTINEZ-RAMIREZ G，ABDOUM T. Centrifuge modeling of seismic behavior of a slope in liquefiable soil[J]. Soil Dynamics and Earthquake Engineering，2002，22(9)：1 043–1 049. [18] 刘红帅，王根龙，薄景山. 汶川8.0级特大地震汉源背后山滑坡科考报告[R]. 中国地震局工程力学研究所，防灾科技学院，2008.(LIU Hongshuai，WANG Genlong，BAO Jingshan. Behind mountain landslide research report in Hanyuan county town during the Wenchuan Ms 8.0 earthquake[R]. Institute of Engineering Mechanics，China Earthquake Administration，Institute of Disaster Prevention Science and Technology，2008.(in Chinese)) [19] 南京水利科学研究院土工研究所. 土工试验技术手册[M]. 北京：人民交通出版社，2003：315–370.(Geotechnical Engineering Department，Nanjing Hydraulic Research Institute. Technological manuals of geotechnical test[M]. Beijing：China Communications Press，2003，315–370. (in Chinese)) [20] WANG L，ZHANG G，ZHANG J M. Nail reinforcement mechanism of cohesive soil slopes under earthquake conditions[J]. Soils and Foundations，2010，50(4)：459–469. [21] 杨春宝，朱斌，孔令刚，等. 水位变化诱发粉土边坡失稳离心模型试验[J]. 岩土工程学报，2013，35(7)：1 261–1 271.(YANG Chunbao，ZHU Bin，KONG Linggang，et al. Centrifuge model tests on failure of silty slopes induced by change of water level[J]. Chinese Journal of Geotechnical Engineering，2013，35(7)：1 261–1 271.(in Chinese)) [22] 周燕国，梁甜，李永刚，等. 含黏粒砂土场地液化离心机振动台试验研究[J].岩土工程学报，2013，35(9)：1 650–1 658.(ZHOU Yanguo，LIANG Tian，LI Yonggang，et al. Dynamic centrifuge tests on liquefaction of clayey sand ground[J].Chinese Journal of Geotechnical Engineering，2013， 35(9)：1650–1658. (in Chinese)) [23] 刘红帅，杨俊波，薄景山，等. 汶川地震汉源县城高烈度异常区基岩地震动输入[J]. 地震工程与工程振动，2013，33(2)：27–36.(LIU Hongshuai，YANG Junbo，BO Jingshan，et al. Bedrock ground motion input to high-intensity abnormality area in Hanyuan county town during Wenchuan Ms 8.0 earthquake[J]. Journal of Earthquake Engineering and Engineering Vibration，2013，33(2)：27–36.(in Chinese)) [24] 林宇亮，杨果林，钟正. 不同压实度铁路路堤边坡地震响应振动台试验研究[J]. 岩土力学，2012，33(11)：3 285–3 291.(LIN Yuliang， YANG Guolin，ZHONG Zheng. Shaking table test on seismic response of railway embankment slopes with different compaction degrees[J]. Rock and Soil Mechanics，2012，33(11)：3 285–3 291.(in Chinese))