边坡地震动力响应的振动台模型试验

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1062 KB) HTML ()
输出: BibTeX | EndNote (RIS)

摘要 The dynamic responses of different slope types are analyzed using the shaking table model test to study the influences of slope position and ground motion parameters on the dynamic response of acceleration. The influences of slope shape, elevation, seismic wave type, vibration intensity, and earthquake frequency on dynamic response are determined. The following conclusions are drawn from the experimental results. (1) The modal parameters of a slope are independent of elevation. The first-order natural frequency of the model system decreases gradually, whereas the damping ratio increases gradually as white noise increases slowly. (2) The acceleration amplification factor of a measuring point on a concave slope is slightly larger than that on a convex slope. The stability of a convex slope is better than that of a concave slope. (3) The elevation amplification effect, which is influenced by slope topography and ground motion parameters, differs under varying seismic loads. The elevation amplification effect of a concave slope is more significant than that of a convex slope. (4) The acceleration amplification coefficient obtained from each measuring point on the slope surface and in the inner region of the slope exhibits an increasing fold line trend. However, the acceleration amplification coefficient of each measuring point on the slope surface is greater than that in the inner region of the slope. (5) The slope dynamic amplification effect is closely related to the natural frequency of a slope. Within a certain range, when the frequency is high, the amplification effect is significant. (6) The influence of vibration strength on the slope dynamic response distribution is minimal along the height direction, whereas the influence on the slope acceleration amplification effect is evident.

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	周志军
	范亚伦
	闫坤伐

关键词 ： road engineering, amplification coefficients of acceleration, shaking table model test, slope dynamic response, earthquake

Abstract：The dynamic responses of different slope types are analyzed using the shaking table model test to study the influences of slope position and ground motion parameters on the dynamic response of acceleration. The influences of slope shape, elevation, seismic wave type, vibration intensity, and earthquake frequency on dynamic response are determined. The following conclusions are drawn from the experimental results. (1) The modal parameters of a slope are independent of elevation. The first-order natural frequency of the model system decreases gradually, whereas the damping ratio increases gradually as white noise increases slowly. (2) The acceleration amplification factor of a measuring point on a concave slope is slightly larger than that on a convex slope. The stability of a convex slope is better than that of a concave slope. (3) The elevation amplification effect, which is influenced by slope topography and ground motion parameters, differs under varying seismic loads. The elevation amplification effect of a concave slope is more significant than that of a convex slope. (4) The acceleration amplification coefficient obtained from each measuring point on the slope surface and in the inner region of the slope exhibits an increasing fold line trend. However, the acceleration amplification coefficient of each measuring point on the slope surface is greater than that in the inner region of the slope. (5) The slope dynamic amplification effect is closely related to the natural frequency of a slope. Within a certain range, when the frequency is high, the amplification effect is significant. (6) The influence of vibration strength on the slope dynamic response distribution is minimal along the height direction, whereas the influence on the slope acceleration amplification effect is evident.

Key words： road engineering amplification coefficients of acceleration shaking table model test slope dynamic response earthquake

收稿日期: 2016-05-16

基金资助:Supported by the Road and Transport R&D Project for Western Regions of China Commissioned by Ministry of Transport (No.2008353361420)

通讯作者: ZHOU Zhi-jun,E-mail address:5974100@qq.com E-mail: 5974100@qq.com

引用本文:

周志军, 范亚伦, 闫坤伐. 边坡地震动力响应的振动台模型试验[J]. Journal of Highway and Transportation Research and Development, 2017, 11(1): 23-32.
ZHOU Zhi-jun, FAN Ya-lun, YAN Kun-fa. Shaking Table Model Test of Slope Seismic Dynamic Response. Journal of Highway and Transportation Research and Development, 2017, 11(1): 23-32.

链接本文:

http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/ 或 http://manu27.magtech.com.cn/Jwk_gljtkj_en/CN/Y2017/V11/I1/23

[1] ZHANG Li, FU Hong-yuan, FU Kang-lin, et al. Analysis on Influencing Factors of Slope Dynamic Stability Induced by Wenchuan Earthquake[J].Journal of Highway and Transportation Research and Development,2011,28(4):12-18.(in Chinese)
[2] BOUCKOUALAS G D, PAPADIMITRIOU A G. Numerical Evaluation of Slope Topography Effects on Seismic Ground Motion[J].Soil Dynamics and Earthquake Engineering, 2005, 25(7):547-548.
[3] ZHANG C H, PEKAU O A, JIN F, et al. Application of Distinct Element Method in Dynamic Analysis of High Rock Slope and Blocky Structures[J].Soil Dynamics and Earthquake Engineering,1997,16(4):385-394.
[4] KIM D, PAN X, PARADALOS P M. An Enhanced Dynamic Slope Scaling Procedure with Tabu Scheme for Fixed Charge Network Flow Problems[J]. Computational Economics, 2006,6(3):273-293.
[5] XU Guang-xing, YAO Ling-kan, GAO Zhao-ning, et al. Large-scale Shaking Table Model Test Study on Dynamic Characteristics and Dynamic Responses of Slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(3):624-632.(in Chinese)
[6] XU Guang-xing, YAO Ling-kan, LI Zhao-hong, et al. Dynamic Response of Slopes under Earthquakes and Influence of Ground Motion Parameters[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(6):918-923.(in Chinese)
[7] XU Guang-xing. Research on Dynamic Responses and Permanent Displacement of Slope under Earthquake[D]. Chengdu:Southwest Jiaotong University, 2010.(in Chinese)
[8] LIN Mei-ling, WANG Kuo-lung. Seismic Slope Behavior in a Large-scale Shaking Table Model Test[J]. Engineering Geology, 2006, 86(2):118-133.
[9] XU Qiang, CHEN Jian-jun, FENG Wen-kai,et al. Experimental Study of the Seismic Response of Slopes by Physical Modeling[J]. Journal of Sichuan University:Engineering Science Edition, 2009, 41(3):266-272.(in Chinese)[ZK)]
[10] XU Qiang, LIU Han-xiang, ZOU Wei,et al. Large-scale Shaking Table Test Study of Acceleration Dynamic Responses Characteristics of Slopes[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(12):2420-2428.(in Chinese)
[11] FENG Zhi-ren, LIU Hong-shuai, YU Long. Surface Amplification Effect of Bedding Rocky Slope with Weak Interlayer under Earthquake[J]. Journal of Disaster Prevention and Mitigation Engineering, 2014, 34(1):96-100.(in Chinese)
[12] ZHOU Hong-yan. Research on Seismic Response and Dynamical Stability of Slope[D]. Chengdu:Southwest Jiaotong University, 2013.(in Chinese)
[13] YAN Zhi-xin, GAO Le, PENG Ning-bo,et al. Study of Dynamic Response of Bedding Rock Slope under Earthquakes[J]. Rock and Soil Mechanics, 2012, 33(S2):85-90.(in Chinese)
[14] LIU Qiang. Seimic Site Response Analysis and Large-scale Shaking Table Test[D]. Chengdu:Southwest Jiaotong University, 2013.(in Chinese)
[15] GB50011-2010, Code for Seismic Design of Buildings[S]. (in Chinese)
[16] LI Jin-bei, ZHANG Hong-ru, LI Zhi-qiang. Large-scale Shaking Table Model Test for Fill Subgrade of Highway in High-intensity Earthquake Area[J]. Journal of Highway and Transportation Research and Development, 2011, 28(11):1-6.(in Chinese)
[17] REN Zi-ming. Dynamic Response and Stability of Slope under Seismc Excitations[D]. Chengdu:Southwest Jiaotong University, 2007.(in Chinese)
[18] WANG Xi. Study on Deformation Characteristics and Failure Mechanism of Bedding Rock Slope under Earthquake[D].Changchun:Jilin University, 2010.(in Chinese)