|Table of Contents|

Dynamic response of anchors-supported slope under earthquake(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2017年03期
Page:
46-55
Research Field:
道路与铁道工程
Publishing date:
2017-08-05

Info

Title:
Dynamic response of anchors-supported slope under earthquake
Author(s):
HAO Jian-bin GUO Jin-yang ZHANG Zhen-bei LI Jin-he
School of Geology Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China
Keywords:
slope anchor lattice beam dynamic response shaking table test sinusoidal wave
PACS:
U416.14
DOI:
-
Abstract:
In order to investigate the dynamic response characteristic and failure mode of anchor in a soil-filled slope, a shaking table mode experiment on clathrate anchors-supported soil slopes was carried out. Sinusoidal motions were used as the incident waves, and the acceleration of slope and the axial strain of anchor were monitored. Analysis result shows that under the same vibration frequency, the axial strain amplitude of anchor increases with the increase of peak acceleration. When the peak acceleration is low, the slope is stable, and the strains of anchors recirculate between a positive value and a negative value. The maximum and minimum strains of anchor are unstable and change slightly with the increase of the peak acceleration, but the slope is still stable. When the peak acceleration reaches to the rupture limit, the axial strains of anchors are no longer regular, and the axial strains of key points on the sliding surface greatly and suddenly change, and the relative displacement is very obvious between the sliding body and the stable body. When the peak acceleration is less, the strains of middle and lower anchors are larger, and the strains of middle anchors are about two times as much as the value of top anchor. When the peak acceleration increases, the strains of top anchors gradually increase, and the middle and upper anchors bear loads mainly. When the peak acceleration reaches to the rupture limit, the maximum dynamic strains of anchors increase sharply, and the changing amplitudes of strains of middle anchors are greatest, a clear gap shows between the sliding body and the sliding bed, and the anchors are pulled out. Obviously, the traditional design idea “strengthening slope waist and reinforcing slope toe” is suitable for the areas of low seismic fortification intensity, and the top and middle anchors should be lengthened properly in the areas of high seismic fortification intensity. 2 tabs, 20 figs, 31 refs.

References:

[1] 郝建斌. 地震作用下边坡稳定性研究进展[J].世界地震工程,2014,30(1):145-153. HAO Jian-bin. Progress of research on stability of slope subjected to seismic excitation[J]. World Earthquake Engineering, 2014, 30(1): 145-153.(in Chinese)
[2] 郭海强,姚令侃,郭沉稳,等.地震强度递增沙堆模型响应机制的研究[J].湖南大学学报:自然科学版,2015,42(5):99-106. GUO Hai-qiang, YAO Ling-kan, GUO Chen-wen, et al. Study on the response mechanism of sandpile model tests with increased seismic loading[J]. Journal of Hunan University:Natural Sciences, 2015, 42(5): 99-106.(in Chinese)
[3] 段书苏,姚令侃,郭沉稳.基于侵蚀循环理论的地震触发崩塌滑坡灾势评价[J].湖南大学学报:自然科学版,2015,42(9): 116- 123. DUAN Shu-su, YAO Ling-kan, GUO Chen-wen. Tendency evaluation of collapse-landslide caused by earthquake based on the erosion cycle theory[J]. Journal of Hunan University:Natural Sciences, 2015, 42(9): 116-123.(in Chinese)
[4] 黄润秋.汶川8.0级地震触发崩滑灾害机制及其地质力学模式[J].岩石力学与工程学报,2009,28(6):1239-1249. HUANG Run-qiu. Mechanism and geomechanical modes of landslide hazards triggered by Wenchuan 8.0 Earthquake[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(6): 1239-1249.(in Chinese)
[5] TAKEMURA J, KUBO H, YAMAZAKI J. Field surveys of anchored slopes after 2004 Niigataken Chuetsu earthquake[C]∥ Thomas Telford. International Conference on Ground Anchorages and Anchored Structures in Service 2007. London: Thomas Telford, 2007: 407-416.
[6] 叶海林,郑颖人,黄润秋,等.锚杆支护岩质边坡地震动力响应分析[J].后勤工程学院学报,2010,26(4):1-7. YE Hai-lin, ZHENG Ying-ren, HUANG Run-qiu, et al. Analysis on dynamic response of rockbolt in rock slope under earthquake[J].Journal of Logistical Engineering University, 2010, 26(4): 1-7.(in Chinese)
[7] 朱宏伟,姚令侃,项 琴.锚固长度对加锚边坡地震动力特性的影响[J].水文地质工程地质,2012,39(3):54-59. ZHU Hong-wei, YAO Ling-kan, XIANG Qin. A study of the effect of bolt length on dynamic response of anchored slopes under earthquakes[J]. Hydrogeology and Engineering Geology, 2012, 39(3): 54-59.(in Chinese)
[8] LI Zhi, XU Qian, LU Gang. Seismic response of anchored slopes to the effect of seismic loads[J]. Electronic Journal of Geotechnical Engineering, 2014, 19: 3733-3744.
[9] STAMATOPOULOS C A, BASSANOU M, BRENNAN A J, et al. Mitigation of the seismic motion near the edge of cliff- type topographies[J]. Soil Dynamics and Earthquake Engineering, 2007, 27(12): 1082-1100.
[10] TRANDAFIR A C, KAMAI T, SIDLE R C. Earthquake-induced displacements of gravity retaining walls and anchor- reinforced slopes[J]. Soil Dynamics and Earthquake Engineering, 2009, 29(3): 428-437.
[11] TANNANT D D, BRUMMER R K, YI X. Rockbolt behaviour under dynamic loading: field tests and modeling[J]. International Journal of Rock Mechanics and Mining Sciences. 1995, 32(6): 537-550.
[12] HONG Y S, CHEN R H, WU C S, et al. Shaking table tests and stability analysis of steep nailed slope[J]. Canadian Geotechnical Journal, 2005, 42(5): 1264-1279.
[13] SHUKLA S K, HOSSAIN M M. Stability analysis of multi-directional anchored rock slope subjected to surcharge and seismic loads[J]. Soil Dynamics and Earthquake Engineering, 2011, 31(5/6): 841-844.
[14] 董建华,朱彦鹏.框架锚杆支护边坡地震响应分析[J].兰州理工大学学报,2008,34(2):118-122. DONG Jian-hua,ZHU Yan-peng. Analysis of response of slope supported with framed anchor to earthquake[J]. Journal of Lanzhou University of Technology, 2008, 34(2): 118-122.(in Chinese)
[15] 叶海林,黄润秋,郑颖人,等.岩质边坡锚杆支护参数地震敏感性分析[J].岩土工程学报,2010,32(9):1374-1379. YE Hai-lin, HUANG Run-qiu, ZHENG Ying-ren, et al. Sensitivity analysis of parameters for bolts in rock slopes under earthquakes[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(9): 1374-1379.(in Chinese)
[16] 彭宁波,言志信,刘子振,等.地震作用下锚固边坡稳定性数值分析[J].工程地质学报,2012,20(1):44-50. PENG Ning-bo, YAN Zhi-xin, LIU Zi-zhen, et al. Numerical analysis on stability of slopes supported with bolts under earthquake[J]. Journal of Engineering Geology, 2012, 20(1): 44-50.(in Chinese)
[17] 龙海涛.层状软岩边坡地震动力响应特征及抗震加固措施研究——以广甘高速公路边坡为例[D].成都:成都理工大学,2012. LONG Hai-tao. Study on the seismic characteristics and anti-seismic strengthening measures of stratiform soft rock slope—take the slope of the Guanggan Highway as an example[D]. Chengdu: Chengdu University of Technology, 2012. (in Chinese)
[18] 范 刚,张建经,付 晓,等.双排桩加预应力锚索加固边坡锚索轴力地震响应特性研究[J].岩土工程学报,2016,38(6):1095- 1103. FAN Gang, ZHANG Jian-jing, FU Xiao, et al. Axial force of anchor cables in slope reinforced by double-row anti- slide piles and pre-stressed anchor cables[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(6): 1095- 1103.(in Chinese)
[19] 叶海林,郑颖人,陆 新,等.边坡锚杆地震动特性的振动台试验研究[J].土木工程学报,2011,44(增):152-157. YE Hai-lin, ZHENG Ying-ren, LU Xin, et al. Shaking table test on anchor bars of slope under earthquake[J]. China Civil Engineering Journal, 2011, 44(S): 152-157.(in Chinese)
[20] 文畅平,杨果林.格构式框架护坡地震动位移模式的振动台试验研究[J].岩石力学与工程学报,2011,30(10):2076-2083. WEN Chang-ping, YANG Guo-lin. Shaking table model test study of seismic displacement mode of slope with anchor lattice frame structure[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(10): 2076-2083.(in Chinese)
[21] 杨果林,文畅平.格构锚固边坡地震响应的振动台试验研究[J].中南大学学报:自然科学版,2012,43(4):1482-1493. YANG Guo-lin, WEN Chang-ping. Shaking table test study on dynamic response of slope with lattice framed anchor structure during earthquake[J]. Journal of Central South University: Science and Technology, 2012, 43(4): 1482- 1493.(in Chinese)
[22] 郝建斌,姚 婕,黄毓挺,等.动力作用下锚杆格构支护土质边坡动态响应分析[J].地球科学与环境学报,2015,37(5):93-100. HAO Jian-bin, YAO Jie, HUANG Yu-ting, et al. Analysis of dynamic response of soil slope reinforced by anchors and lattices subjected to dynamic loads[J]. Journal of Earth Sciences and Environment, 2015, 37(5): 93-100.(in Chinese)
[23] LIU Yun, GAO Feng, LI Ya. Dynamic stability analysis on a slope supported by anchor bolts and piles[J]. Electronic Journal of Geotechnical Engineering, 2015, 20(7): 1887-1900.
[24] 董建华,张 媛,朱彦鹏,等.框架预应力锚杆边坡锚固结构的随机地震反应及动力可靠度分析[J].中国公路学报,2015,28 (10):26-33. DONG Jian-hua, ZHANG Yuan, ZHU Yan-peng, et al. Random seismic response and dynamic reliability analysis of frame with prestressed anchors for stability[J]. China Journal of Highway and Transport, 2015, 28(10): 26-33.(in Chinese)
[25] LIN Yu-liang, YANG Guo-lin, YANG Xiao, et al. Response of gravity retaining wall with anchoring frame beam supporting a steep rock slope subjected to earthquake loading[J]. Soil Dynamics and Earthquake Engineering, 2017, 92: 633-649.
[26] 杨 明,姚令侃,王 建,等.斜坡堆积体抗震加固措施离心模型试验[J].西南交通大学学报,2008,43(3):335-340. YANG Ming, YAO Ling-kan, WANG Jian, et al. Centrifuge model test of earthquake countermeasures for deposit on slope[J]. Journal of Southwest Jiaotong University, 2008, 43(3): 335-340.(in Chinese)
[27] 朱彦鹏,叶帅华.水平地震下框架锚杆支护边坡简化分析方法[J].工程力学,2011,28(12):27-32. ZHU Yan-peng, YE Shuai-hua. Simplified analysis of slope supported with frame-anchors under lateral seismic loading[J]. Engineering Mechanics, 2011, 28(12): 27-32.(in Chinese)
[28] 叶帅华,朱彦鹏.框架预应力锚杆支护边坡地震动稳定性分析方法[J].煤炭学报,2012,37(12):1994-1998. YE Shuai-hua, ZHU Yan-peng. Stability analysis of slope supported by frame with pre-stressed anchors under earthquake[J]. Journal of China Coal Society, 2012, 37(12): 1994-1998.(in Chinese)
[29] 董建华,朱彦鹏,马 巍,等.框架预应力锚杆边坡支护结构抗震简化设计方法[J].中国公路学报,2012,25(5):38-46. DONG Jian-hua, ZHU Yan-peng, MA Wei, et al. Simplified seismic design method of frame supporting structure with prestressed anchors for slope stability[J]. China Journal of Highway and Transport, 2012, 25(5): 38-46.(in Chinese)
[30] LIU Han-xiang, XU Qiang, LI Yan-rong. Effect of lithology and structure on seismic response of steep slope in a shaking table test[J]. Journal of Mountain Science, 2014, 11(2): 371-383.
[31] 张江伟,高晓莉,李小军,等.土质边坡地震动力响应规律研究[J].震灾防御技术,2016,11(4):771-780. ZHANG Jiang-wei, GAO Xiao-li, LI Xiao-jun. Dynamic response analysis of soil slope under seismic wave[J]. Technology for Earthquake Disaster Prevention, 2006, 11(4): 771-780.(in Chinese)

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Last Update: 2017-08-05