康定Ms5.8级地震冷竹关坡体内地震动响应特征

doi:10.3969/j.issn.0258-2724.2015.05.011

基金项目:

国家自然科学基金资助项目(41072231)

中国地调局地质调查工作项目(12120113010100)

详细信息

作者简介:
王运生(1960-),男,教授,博士,研究方向为地质灾害,电话:028-84073563,E-mail:wangys60@163.com

计量
- 文章访问数:1005
- HTML全文浏览量:115
- PDF下载量:433
- 被引次数:0
出版历程
- 收稿日期:2015-04-13
- 刊出日期:2015-10-25

Seismic Responses of Lengzhuguan Slope During Kangding Ms5.8 Earthquake

摘要

摘要:为了揭示坡体内不同水平深度峰值加速度变化特征及地震触发大型滑坡形成机理,在冷竹关沟两岸安置强震监测台阵,对斜坡内部不同深度地震动响应进行监测研究.2014年11月25日康定Ms5.8级地震触发了位于坡体内部不同深度的五台强震监测仪,数据揭示:自坡体表面水平向内,各监测点水平向峰值加速度逐渐减小,且0~45 m的表层向内峰值加速度下降幅度较大,在坡体内部的下降幅度变小,洞深99 m处的水平向峰值加速度约为洞口监测仪的60%;水平向加速度反应谱也表明自坡面向内各监测点加速度幅值逐渐减小,标准反应谱的动力放大系数都小于3.5;傅里叶频谱也表明自坡面向内各监测点幅值逐渐减小,且越靠近洞口傅氏谱频率成分越复杂.
- 斜坡地震动响应/
- 衰减规律/
- 加速度反应谱/
- 傅氏谱/
- 冷竹关
Abstract:In order to reveal the characteristics of the peak acceleration at different depths of a slope and seismic landslide formation mechanism, a strong earthquake monitoring array was set up in both sides of the Lengzhuguan slope. Five strong vibrograph at different depths but the same altitude were triggered by Kangding Ms 5.8 earthquake occurred on December 25th, 2014. The data reveals that the horizontal peak acceleration at each monitoring site decreases with the increase of depth. It decreases greatly within the surface range of 0 to 45 m and at the inner slope falls at a slow rate. At the monitoring site (99 m from the hole) the horizontal peak acceleration is about 0.6 times the one at the hole. The acceleration response spectrum shows that the amplitudes at monitoring sites decay with the increase of the depth, and the dynamic magnification factor of standard spectra is less than 3.5. Fourier spectrum shows that the amplitudes also decrease gradually from the outside hole to the inside slope, and near the hole, the components of the spectrum become complex.
- slope seismic response/
- attenuation rule/
- acceleration response spectrum/
- Fourier spectrum/
- Lengzhuguan section

HTML全文

参考文献 (46)

GELI L, BARD P Y, JULLIEN B. The effect of topography on earthquake ground motion: a review and new results

黄润秋,王运生,裴向军,等. 420芦山Ms7.0级地震地质灾害特征

[J]. Bulletin of the Seismological Society of America, 1988, 78: 42-63.

罗永红,王运生. 汶川地震诱发山地斜坡地震动地形放大效应研究

罗永红,王运生,何源,等. 420芦山地震冷竹关地震动响应监测数据分析

[J]. 江南娱乐网页版入口官网下载安装学报,2013,48(4): 581-589. HUANG Runqiu, WANG Yunsheng, PEI Xiangjun, et al. Characteristics of co-seismic landslides triggered by the lushan Ms7.0 earthquake on the 20th of April, Sichuan Province, China

王存玉,王思敬. 边坡模型振动实验研究

[J]. Journal of Southwest Jiaotong University, 2013, 48(4): 581-589.

祁生文,伍法权,孙进忠. 边坡动力响应规律研究

[J]. 山地学报,2013,31(2): 200-210. LUO Yonghong, WANG Yunsheng. A study on the mountain slope ground motion topography amplification effect induced by Wenchuan earthquake

祁生文,伍法权,严福章,等. 岩质边坡动力反应分析

[J]. Journal of Mountain Science, 2013, 31(2): 200-210.

罗学海. 论地震工程研究

SHARMA S, JUDD W R. 地震对地下洞室的破坏

李天斌. 汶川特大地震中山岭隧道变形破坏特征及影响因素分析

[J]. 成都理工大学学报:自然科学版,2013,40(3): 232-241. LUO Yonghong, WANG Yunsheng, HE Yuan, et al. Monitoring result analysis of Lengzhuguan slope ground shock response of Lushan earthquake of Sichuan, China

[J]. Journal of Chengdu University of Technology: Science Technology Edition, 2013, 40(3): 232-241.

罗定伦,高波,申玉生. 关于隧道抗减震模型试验围岩相似材料的研究

申玉生,高波,王英学. 强震区山岭隧道洞口段结构动力特性分析

郑颖人,叶海林,肖强,等. 基于全动力分析法的地震边坡与隧道稳定性分析

[C]//岩体工程地质力学问题(七). 北京:科学出版社,1987: 65-74.

蒋树屏,方林,林志. 不同埋置深度的山岭隧道地震响应分析

[J]. 中国科学:E辑,2003,33(B12): 28-40. QI Shengwen, WU Faquan, SUN Jinzhong. Dynamic response of slope

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]. Science China Technological Sciences, 2003, 33(B12): 28-40.

李杰. 几类反应谱的概念差异及其意义

中华人民共和国国家能源局. DZ/54162009水工建筑物强震动安全监测技术规范

[M]. 北京:科学出版社,2007: 139-142.

[M]. 北京:地震出版社,1988: 495-496.

[J]. 地下空间,1992,12(4): 335-344. SHARMA S, JUDD W R. Underground opening damage from earthquakes

[J]. Underground Space, 1992, 12(4): 335-344.

[J]. 工程地质学报,2008,16(6): 742-750. LI Tianbin. Failure characteristics and influence factor analysis of mountain tunnels at epicenter zones of great Wenchuan earthquake

[J]. Journal of Engineering Geology, 2008, 16(6): 742-750.

[J]. 石家庄铁道学院学报,2008,21(3): 70-73. LUO Dinglun, GAO Bo, SHEN Yusheng. Research on simulating material of surrounding rock in tunnel seismic model experiment

[J]. Journal of Shijiazhuang Railway Institute: Natural Science, 2008, 21(3): 70-73.

[J]. 岩石力学与工程学报, 2009,28(增刊1): 3131-3136. SHEN Yusheng, GAO Bo, WANG Yingxue. Structural dynamic properties analysis for portal part of mountain tunnel in strong earthquake area

[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(Sup.1): 3131-3136.

[J]. 防灾减灾工程学报,2010,30(增刊1): 279-285. ZHENG Yingren, YE Hailin, XIAO Qiang, et al. Seismic slope stability and tunnel analysis method based on full power analysis

[J]. Journal of Disaster Prevention and Mitigation Engineering, 2010, 30(Sup.1): 279-285.

[J]. 岩土力学,2014,35(1): 211-216,225. JIANG Shuping, FANG Lin, LIN Zhi. Seismic response analysis of mountain tunnels in different depths

[J]. Rock and Soil Mechanics, 2014, 35(1): 211-216, 225.

[J]. 岩石力学与工程学报,2012,31(4): 696-702. YANG Guoxinag, 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.

[J]. 世界地震工程,1993,9(4): 9-14. LI Jie. Several response spectrums' conception difference and their significance

[J]. World Earthquake Engineering, 1993, 9(4): 9-14.

[S]. 北京:中国电力出版社,2009.

施引文献

附加材料 (0)

访问统计