基于振动台试验的顺层及反倾岩质斜坡地震动响应差异性研究

doi:10.13722/j.cnki.jrme.2021.0168

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1576 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要以折多山隧道隧址区内某顺层及反倾岩质斜坡为背景，设计并开展地震动模拟振动台试验，从破坏现象、PGA放大系数及加速度时频特征等方面系统地对比两类斜坡地震动力响应的差异。研究结果表明：在本次振动台试验中，顺层斜坡先于反倾斜坡发生破坏，表明反倾斜坡的地震稳定性优于顺层斜坡。反倾斜坡的损伤破坏主要集中于坡面顶部，而顺层斜坡的失稳破坏模式大致分为坡面腰部开裂、坡顶后缘张裂滑面形成以及失稳崩塌3个阶段。顺层与反倾斜坡加速度响应均表现出较为明显的“高程效应”和“趋表效应”。在0.1 g～0.5 g幅值地震波作用下，顺层斜坡的PGA放大系数大于反倾边坡。随着地震动的加强，顺层斜坡发生失稳破坏，其加速度放大效应弱于反倾斜坡。Hilbert谱和Hilbert边际谱清楚地描述顺层和反倾斜坡地震能量在时频域上的传播特征，两类斜坡地震能量在时频域上的分布相近，差异主要体现在沿高程的放大效应。此外，通过Hilbert边际谱识别出反倾斜坡的地震损伤主要集中在坡肩位置处，而顺层斜坡的破坏发生在坡腰，并在坡腰处形成剪切滑面，这与振动台试验现象基本一致。

	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
	杨长卫1
	张良1
	董陇军2
	童心豪1
	苏珂1
	唐锐3
	李思丰4

关键词 ：边坡工程, 顺层与反倾岩质边坡, 振动台试验, 动力响应差异, 高程放大效应, HHT时频分析

Abstract：Taking a bedding rock slope and a toppling rock slope in the Zheduoshan tunnel area as reference，the shaking table test was designed and carried out. The differences of seismic dynamic responses of the two kinds of slopes are systematically compared from the aspects of failure phenomenon，PGA amplification factor and time-frequency characteristics. The results show that the failure of the bedding slope is prior to that of the toppling slope，which indicates that the seismic stability of the toppling slope is better than that of the bedding slope. The damage of the toppling slope is mainly concentrated on the top of the slope surface，while the failure mode of the bedding slope can be divided into three stages of cracking of the slope waist，formation of the sliding surface at the trailing edge of the slope and collapse and instability of the slope. The acceleration responses of the bedding and toppling rock slopes show obvious “elevation effect” and “surface effect”. Under the action of 0.1 g–0.5 g amplitude seismic waves，the PGA amplification factor of the bedding slope is greater than that of the toppling slope. With strengthening the ground motion，the bedding slope is destroyed before the toppling slope，and its acceleration amplification effect is weaker than that of the toppling slope. Hilbert spectrum and Hilbert marginal spectrum clearly describe the propagation characteristics of the seismic energy in time-frequency domain of bedding and toppling slopes. The distributions of the seismic energy in time-frequency domain of the two kinds of slopes are similar，and the difference is mainly reflected in the amplification effect along the elevation. In addition，according to the Hilbert marginal spectrum，it is identified that the seismic damage of the toppling slope is mainly concentrated at the slope shoulder，while that the damage of the bedding slope occurs at the slope waist where a shear slip surface will form，which is basically consistent with the phenomena observed in shaking table test.

Key words： slope engineering')" href="#">

slope engineering bedding and toppling rock slopes shaking table test difference of dynamic response elevation amplification effect HHT method

引用本文:

杨长卫1，张良1，董陇军2，童心豪1，苏珂1，唐锐3，李思丰4. 基于振动台试验的顺层及反倾岩质斜坡地震动响应差异性研究[J]. 岩石力学与工程学报, 2022, 41(2): 271-281.
YANG Changwei1，ZHANG Liang1，DONG Longjun2，TONG Xinhao1，SU Ke1，TANG Rui3，LI Sifeng4. Research on the difference of dynamic responses between bedding and toppling rock slopes based on shaking table test. , 2022, 41(2): 271-281.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.0168 或 http://rockmech.whrsm.ac.cn/CN/Y2022/V41/I2/271

[28]	ZHANG L，YANG C W，MA S J，et al. Seismic response time-frequency analysis of bedding rock slope[J]. Frontiers in Physics，2020，8：558 547.
[7]	DONG L J，LI X B. Comprehensive models for evaluating rockmass stability based on statistical comparisons of multiple classifiers[J]. Mathematical Problems in Engineering，2013，2013：1 256-1 271.
[9]	黄润秋，李果，巨能攀. 层状岩体斜坡强震动力响应的振动台试验[J]. 岩石力学与工程学报，2013，32(5)：865-875.(HUANG Runqiu，LI Guo，JU Nengpan. Shaking table test on strong earthquake response of stratified rock slopes[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(5)：865-875.(in Chinese))
[11]	刘树林，杨忠平，刘新荣，等. 频发微小地震作用下顺层岩质边坡的振动台模型试验与数值分析[J]. 岩石力学与工程学报，2018，37(10)：2 264-2 276.(LIU Shulin，YANG Zhongping，LIU Xinrong，et al. Shaking table model test and numerical analysis of the bedding rock slopes under frequent micro-seismic actions[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(10)：2 264-2 276.(in Chinese))
[13]	范刚，张建经，付晓. 含泥化夹层顺层和反倾岩质边坡动力响应差异性研究[J]. 岩土工程学报，2015，37(4)：692-699.(FAN Gang，ZHANG Jianjing，FU Xiao. Dynamic response differences between bedding and count-tilt rock slopes with siltized intercalation[J]. Chinese Journal of Geotechnical Engineering，2015，37(4)：692-699.(in Chinese))
[5]	LI X B，DONG L J，ZHAO G Y，et al. Stability analysis and comprehensive treatment methods of landslides under complex mining environment—A case study of Dahu landslide from Linbao Henan in China[J]. Safety Science，2012，50(4)：695-704.
[14]	FAN G，ZHANG J J，WU J B，et al. Dynamic response and dynamic failure mode of a weak intercalated rock slope using a shaking table[J]. Rock Mechanics and Rock Engineering，2016，49(8)：3 243-3 256.
[16]	LI L Q，JU N P，ZHANG S，et al. Seismic wave propagation characteristic and its effects on the failure of steep jointed anti-dip rock slope[J]. Landslides，2019，16(1)：105-123.
[23]	HUANG N E，SHEN Z，LONG S R，et al. The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis[J]. Proceedings Mathematical Physical and Engineering Sciences，1998，454(1971)：903-995.
[25]	邱俊，任光明，王云南. 层状反倾-顺倾边坡倾倒变形形成条件及发育规模特征[J]. 岩土力学，2016，37(增2)：513-524.(QIU Jun，REN Guangming，WANG Yunnan. Characteristics of forming conditions and development scale of toppling in anti-dip and dip stratified slopes[J]. Rock and Soil Mechanics，2016，37(Supp.2)：513-524.(in Chinese))
[1]	薛翊国，孔凡猛，杨为民，等. 川藏铁路沿线主要不良地质条件与工程地质问题[J]. 岩石力学与工程学报，2020，39(3)：445-468. (XUE Yiguo，KONG Fanmeng，YANG Weimin，et al. Main unfavorable geological conditions and engineering geological problems along Sichuan—Tibet railway[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(3)：445-468.(in Chinese))
[2]	宋章，张广泽，蒋良文，等. 川藏铁路主要地质灾害特征及地质选线探析[J]. 铁道标准设计，2016，60(1)：14-19.(SONG Zhang，ZHANG Guangze，JIANG Liangwen，et al. Analysis of the characteristics of major geological disasters and geological alignment of Sichuan—Tibet railway[J]. Railway Standard Design，2016，60(1)：14-19.(in Chinese))
[4]	HUANG R Q，PEI X J，FAN X M，et al. The characteristics and failure mechanism of the largest landslide triggered by the Wenchuan earthquake，May 12，2008，China[J]. Landslides，2012，9(1)：131-142.
[6]	黄润秋. 20世纪以来中国的大型滑坡及其发生机制[J]. 岩石力学与工程学报，2007，26(3)：433-454.(HUANG Runqiu. Large-scale landslides and their sliding mechanisms in China since the 20th century[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(6)：433-454.(in Chinese))
[8]	蒋明镜，江华利，廖优斌，等. 不同形式节理的岩质边坡失稳演化离散元分析[J]. 同济大学学报：自然科学版，2019，47(2)：167-174.(JIANG Mingjing，JIANG Huangli，LIAO Youbin，et al. Distinct element method analysis of the failure evolution of rock slope with different types of joins[J]. Journal of Tongji University：Natural Science，2019，47(2)：167-174.(in Chinese))
[10]	杨忠平，刘树林，刘永权，等. 反复微震作用下顺层及反倾岩质边坡的动力稳定性分析[J]. 岩土工程学报，2017，39(10)：1 807-1 815. (YANG Zhongping，LIU Shulin，LIU Yongquan，et al. Dynamic stability analysis of bedding and toppling rock slopes under repeated micro-seismic action[J]. Chinese Journal of Geotechnical Engineering，2017，39(10)：1 807-1 815.(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))
[12]	胡训健，卞康，李鹏程，等. 水平厚层状岩质边坡地震动力破坏过程颗粒流模拟[J]. 岩石力学与工程学报，2017，36(9)：2 156-2 168. (HU Xunjian，BIAN Kang，LI Pengcheng，et al. Simulation of dynamic failure process of horizontal thick-layered rock slopes using particle flow code[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(9)：2 156-2 168.(in Chinese))
[21]	范刚，张建经，付晓，等. 含软弱夹层顺层岩质边坡动力破坏模式的能量判识方法研究[J]. 岩土工程学报，2016，38(5)：959-966.(FAN Gang，ZHANG Jianjing，FU Xiao，et al. Energy dentification method for dynamic failure mode of bedding rock slope ith soft strata[J]. Chinese Journal of Geotechnical Engineering，2016，38(5)：959-966.(in Chinese))
[15]	吴多华，刘亚群，李海波，等. 地震荷载作用下顺层岩体边坡动力放大效应和破坏机制的振动台试验研究[J]. 岩石力学与工程学报，2020，39(10)：1 945-1 956.(WU Duohua，LIU Yaqun，LI Haibo，et al. Shaking table tests on dynamic amplification and failure mechanism of layered rock slopes under seismic actions[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(10)：1 945-1 956.(in Chinese))
[17]	SONG D Q，CHE A L，ZHU R J，et al. Natural frequency characteristics of rock masses containing a complex geological structure and their effects on the dynamic stability of slopes[J]. Rock Mechanics and Rock Engineering，2019，52：4 457-4 473.
[18]	YANG C W，ZHANG L，LIU Y，et al. Shaking table test on dynamic response of bedding rock slopes with weak structural plane under earthquake[J]. Frontiers in Physics，2020，8：556714.
[20]	SONG D Q，LIU X L，HUANG J，et al. Energy-based analysis of seismic failure mechanism of a rock slope with discontinuities using Hilbert-Huang Transform and Marginal Spectrum in the time-frequency domain[J]. Landslides，2020，18(1)：105-123.
[22]	闫孔明，刘飞成，朱崇浩，等. 地震作用下含倾斜软弱夹层斜坡场地的动力响应特性研究[J]. 岩石力学与工程学报，2017，36(11)：2 686-2 698.(YAN Kongming，LIU Feicheng，ZHU Chonghao，et al. Dynamic responses of slopes with intercalated soft layers under seismic excitations[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(11)：2 686-2 698.(in Chinese))
[24]	顾大钊. 相似材料与相似模型[M]. 徐州：中国矿业大学出版社，1995：11-13.(GUO Dazhao. Similar material and similar model[M]. Xuzhou：China University of Mining and Technology Press，1995：11-13.(in Chinese))
[27]	FAN G，ZHANG L M，ZHANG J J，et al. Energy-based analysis of mechanisms of earthquake-induced landslide using Hilbert-Huang transform and marginal spectrum[J]. Rock Mechanics and Rock Engineering，2017，50(4)：1-17.
[19]	JIANG M J，JIANG T，CROSTA G B，et al. Modeling failure of jointed rock slope with two main joint sets using a novel DEM bond contact model[J]. Engineering Geology，2015，193：79-96.
[26]	杨长卫. 岩质边坡的地震动特性及基覆型边坡的滑坡成因机理、稳定性判识、危害范围评价体系的研究[博士学位论文][D]. 成都：西南交通大学，2013.(YANG Changwei. Study on the seismic characteristics of rock slopes and the formation mechanism，stability identification and hazard range evaluation system of overlying slopes[Ph. D. Thesis][D]. Chengdu：Southwest Jiaotong University，2013.(in Chinese))