近断层/远场地震动作用下控制性岩体结构对地下洞室地震稳定性影响研究

doi:10.13722/j.cnki.jrme.2016.0443

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (806 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要当前地下岩石工程地震响应研究中，缺乏对近断层地震动的影响机制的研究，也较少考虑地下岩石工程赋存环境中的地质结构。采用一种非线性节理本构模型模拟不利地质结构面，结合从NGA-West2数据库中选取的近断层脉冲型、近断层无脉冲型、及远场地震记录，分析近断层地震动对不利地质结构地震破坏现象的影响机制，并讨论、提出不利地质结构的地震动潜在破坏势，最后针对受层间错动带C2切割控制的白鹤滩水电站左岸尾水系统1#尾调室，揭示其在近断层脉冲型、无脉冲型、远场地震动作用下的动力响应与稳定性的差异。初步研究结果表明：(1) 仅有近断层脉冲型地震动才具有较大的速度、位移峰值和反应谱长周期值的特点，而近断层无脉冲型地震动特性与远场地震动近似；(2) 相对于近断层的大幅值，速度脉冲才是导致近断层地震动具有较大破坏能力的根本原因，速度脉冲使得岩体结构面两盘产生不可接受的剪切位移，成为洞室在近断层地震动作用下独特的失稳机制；(3) 对于地下工程中的不利地质结构而言，相比最常用的地震动强度参数PGA，PGV，PGD和PGV/PGA是为更理想的地震动潜在破坏势，且近断层/远场地震动可适用一种破坏势；(4) 提出的潜在破坏势参数在白鹤滩尾水系统1#尾调室的地震响应分析中得到了较好的验证，若受近断层脉冲型地震动的影响，洞室可能处于不稳定状态，可能需要针对性的抗震支护措施。结论可供地下洞室的抗震设计与分析参考。

	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
	崔臻1
	2
	盛谦1

关键词 ：岩石力学, 地下洞室, 地震稳定性, 近断层地震动, 地质结构, 连续屈服模型

Abstract：Near-fault ground motion mechanisms have seldom been assessed in the seismic studies of underground rock caverns，especially the caverns controlled by large geological discontinuities. A nonlinear joint model was adopted to simulate the unfavorable geological discontinuities. The near-fault pulse-type，near-fault non-pulse-type and far-field ground motion records collected from the NGA-West2 database were used to analyze the influence of near-fault ground motions on unfavorable geological discontinuities. A damage potential index(DPI) was discussed and proposed for unfavorable geological discontinuities. The surge chamber #1 of the Baihetan hydropower plant，which is controlled by the interlayer shear weakness zone(ISWZ) C2，was used as a case study to investigate the differences between the pulse-type near-fault ground motion，non-pulse-type near-fault ground motion and far field ground motion. The significant velocity and displacement and the higher long-period response spectrum were found to associate with the pulse-type near-fault ground motion，while the non-pulse-type near-fault ground motions displayed the similar characteristics as the far field ground motions. The velocity pulse is responsible for the destructive capabilities of near fault ground motions，which may cause the unacceptable sliding along the discontinuity，leading to potential cavern failure. In comparison with several ground motion parameters，PGV was shown to be the most suitable DPI for large geological discontinuities under the earthquake excitation，which was true for both the near-fault and far-field ground motions. PGV was verified to be an effective DPI via the seismic analysis of the Baihetan surge chamber #1. The cavern becomes fragile when subjected to the near-fault ground motions. Therefore，the special seismic reinforcement measures are recommended. These findings may provide a reference for the seismic design of underground caverns.

引用本文:

崔臻1，2，盛谦1. 近断层/远场地震动作用下控制性岩体结构对地下洞室地震稳定性影响研究[J]. 岩石力学与工程学报, 2017, 36(1): 53-67.
CUI Zhen1，2，SHENG Qian1. Seismic response of underground rock cavern dominated by a large geological discontinuity subjected to near-fault and far-field ground motions. , 2017, 36(1): 53-67.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2016.0443 或 http://www.rockmech.org/CN/Y2017/V36/I1/53

[14]	DAVOODI M，M.K. Jafari b，HADIANI N. Seismic response of embankment dams under near-fault and far-field ground motion excitation[J]. Engineering Geology，2013，158：66-76. " target="_blank">
[28]	ARAYA R，SARAGONI G Earthquake accelerogram destructiveness potential factor[C]// Proceedings of 8th World Conference on Earthquake Engineering. [S. l.]：[s. n.]，1984：835-842. " target="_blank">
[4]	SHIMIZU M，SUZUKI T，KATO S，et al. Historical damage of tunnels in Japan and case studies of damaged railway tunnels in the Mid Niigate prefecture earthquakes[C]// ITAAITES World Tunnel Congress 2007，Prague，Czech Rep.. [S. l.]：[s. n.]，2007：128-139. " target="_blank">
[10]	贾俊峰，杜修力，韩强. 近断层地震动特征及其对工程结构影响的研究进展[J]. 建筑结构学报，2015，36(1)：1-12.(JIA Junfeng，DU Xiuli，HAN Qiang. A state-of-the-art review of near-fault earthquake ground motion characteristics and effects on engineering structures[J]. Journal of Building Structures，2015，36(1)：1-12.(in Chinese))
[18]	Pacific Earthquake Engineering Research Center. PEER NGA-West2 strong-motion database[DB/OL]. http：//peer.Berkeley.edu/ngawest2/，2013-10-27/2015-9-3. " target="_blank">
[2]	HASHASHA Y M A， HOOKA J J，SCHMIDTB B，et al. Seismic design and analysis of underground structures[J]. Tunnelling and Underground Space Technology，2001，16(4)：247-293. " target="_blank">
[8]	LI S，XIE L L. Progress and trend on near-field problems in civil engineering[J]. Acta Seismologica Sinica，2007，20(1)：105-114.
[16]	崔臻，盛谦，冷先伦，等. 基于增量动力分析的大型地下洞室群性能化地震动力稳定性评估[J]. 岩石力学与工程学报，2012，31(4)：703-713.(CUI Zhen，SHENG Qian，LENG Xianlun，et al. Performance-based seismic stability assessment of large underground cavern group with incremental dynamic analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(4)：703-713.(in Chinese))
[22]	LI J C，MA G W. Analysis of blast wave interaction with a rock joint[J]. Rock Mechanics and Rock Engineering，2009，43(6)：777-787. " target="_blank">
[30]	GARINI E，GAZETAS G. Damage potential of near-fault records：sliding displacement against conventional“Intensity Measures”[J]. Bulletin of Earthquake Engineering，2013，11(2)：455-480.
[1]	HOUSNER G W，HUDSON D E. The Port Hueneme earthquake of March 18，1957[J]. Bulletin of The Seismological Society of America，1958，48(2)：163-168. " target="_blank">
[3]	COIGLIANO M，SCANDELLA L，LAI C G，et al. Seismic analysis of deep tunnels in near fault conditions：a case study in Southern Italy[J]. Bulletin of Earthquake Engineering，2011，9(4)：975-995.
[6]	朱育才. 近断层脉冲型地震动作用下隧道抗减震研究[硕士学位论文][D]. 重庆：重庆交通大学，2012.(ZHU Yucai. Study on shock absorption of tunnel under near fault pulse-type round motions[M. S. Thesis][D]. Chongqing：Chongqing Jiaotong University，2012.(in Chinese)) " target="_blank">
[7]	崔臻，盛谦，冷先伦，等. 近断层地震动对大型地下洞室群地震响应的影响研究[J]. 岩土力学，2013，34(11)：3 213-3 222.(CUI Zhen，SHENG Qian，LENG Xianlun，et al. Effects of near-fault ground motion on seismic response of underground caverns[J]. Rock and Soil Mechanics，2013，34(11)：3 213-3 222.(in Chinese))
[11]	LOH C H，WAN S，LIAO W Y. Effects of hysteretic model on seismic demands：consideration of near-fault ground motions[J]. The Structural Design of Tall Buildings，2002，11(3)：155-169. " target="_blank">
[13]	SOMERVILLE P G. Magnitude scaling of the near-fault rupture directivity pulse[J]. Physics of the Earth and Planetary Interiors，2003，137(1/4)：201-212. " target="_blank">
[5]	陈磊，陈国兴. 近断层地震动下双层竖向重叠地铁隧道的地震反应[J]. 防灾减灾工程学报，2008，28(4)：399-409.(CHEN Lei，CHEN Guoxing. Seismic response of vertically double-layered metro tunnel under near-fault strong ground motion[J]. Journal of Disaster Prevention and Mitigation Engineering，2008，28(4)：399-409.(in Chinese))
[9]	BOLT B A，ABRAHAMSON N A. Estimation of strong seismic ground motions[M]. [S. l.]：International Handbook of Earthquake and Engineering Seismology，IASPEI，2003：983-1 001. " target="_blank">
[12]	SOMERVILLE P G. Characterizing near fault ground motion for the design and evaluation of bridges[C]// Proceedings of the 3rd National Seismic Conference and Workshop on Bridges and Highways. New York：State University of New York at Buffalo，2002：137-148. " target="_blank">
[17]	ZHANG S R，WANG G H. Effects of near-fault and far-fault ground motions on nonlinear dynamic response and seismic damage of concrete gravity dams[J]. Soil Dynamics and Earthquake Engineering，2013，53(5)：217-229. " target="_blank">
[19]	李明. 近断层地震动对结构抗震设计的影响研究[博士学位论文][D]. 哈尔滨：中国地震局工程力学研究所，2010.(LI Ming. Study of the effect of near-fault ground motion on structural seismic design[Ph. D. Thesis][D]. Harbin：Institute of Engineering Mechanics，China Earthquake Administration，2010.(in Chinese)) " target="_blank">
[23]	CUNDALL P A，LEMOS J V. Numerical simulation of fault instability with the continuously-yielding joint model[C]// Rockbursts and Seismicity in Mines. Rotterdam：Balkema，1990：147-152. " target="_blank">
[26]	郝敏，谢礼立，李爽. 砌体结构的地震动潜在破坏势研究[J]. 哈尔滨工业大学学报，2007，39(10)：1 652-1 656.(HAO Min，XIE Lili，LI Shuang. Study on the damage potential to masonry structures of earthquake ground motions[J]. Journal of Harbin Institute of Technology，2007，39(10)：1 652-1 656.(in Chinese))
[31]	韩淼，段燕玲，孙欢，等. 近断层地震动特征参数对基础隔震结构地震响应的影响分析[J]. 土木工程学报，2013，46(6)：8-14.(HAN Miao，DUAN Yanling，SUN Huan，et al. Influence of characteristics parameters of near-fault ground motions on the seismic responses of base-isolated structures[J]. China Civil Engineering Journal，2013，46(6)：8-14.(in Chinese))
[15]	AKKÖSE M，?IM?EK E. Non-linear seismic response of concrete gravity dams to near-fault ground motions including dam-water- sediment-foundation interaction[J]. Applied Mathematical Modelling，2010，34(11)：3 685-3 700. " target="_blank">
[20]	DOWDING C H，BELYTSCHKO T B，DMYTRYSHYN O. Dynamic response of million block cavern models with parallel processing[J]. Rock Mechanics and Rock Engineering，2000，33(3)：207-214.
[21]	CHEN J C，CHANG Y L，LEE H C. Seismic safety analysis of kukuan underground power cavern[J]. Tunnelling and Underground Space Technology，2004，19(4)：516-527. " target="_blank">
[24]	中国电建集团华东勘测设计研究院有限公司. 白鹤滩水电站可研阶段工程地质报告[R]. 杭州：中国电建集团华东勘测设计研究院有限公司，2006.(PowerChina Huadong Engineering Corporation，Limited. Engineering geology report for dam site selection of the Baihetan hydropower station at the feasibility study stage[R]. Hangzhou：PowerChina Huadong Engineering Corporation，Limited，2006.(in Chinese)) " target="_blank">
[25]	翟长海，谢礼立. 估计和比较地震动潜在破坏势的综合评述[J]. 地震工程与工程振动，2002，22(5)：1-7.(ZHAI Changhai，XIE Lili. A comprehensive method for estimating and comparing the damage potential of strong ground motion[J]. Earthquake Engineering and Engineering Vibration，2002，22(5)：1-7.(in Chinese))
[27]	徐龙军，许昊，谢礼立. 高幅值地震动参数及其潜在破坏势[J]. 哈尔滨工业大学学报，2013，45(10)：7-14.(XUN Longjun，XU Hao，XIE Lili. Parameters and damage potential of large-amplitude ground motions[J]. Journal of Harbin Institute of Technology，2013，45(10)：7-14.(in Chinese))
[29]	CRESPELLANI T，MADIAI C，VANNUCCHI G. Earthquake destructiveness potential factor and slope stability[J]. Geotechnique，1998，48(3)：411-420. " target="_blank">