压力型锚杆支护滑坡的地震动力响应特性研究

李楠; 汪班桥; 门玉明; 张妙芝

doi:10.12090/j.issn.1006-6616.2018.24.04.051

压力型锚杆支护滑坡的地震动力响应特性研究

doi: 10.12090/j.issn.1006-6616.2018.24.04.051

1.
长安大学地质工程与测绘学院, 陕西西安 710054
2.
陕西铁路工程职业技术学院, 陕西渭南 714000

基金项目:

国家自然科学基金项目 41440021

国家自然科学基金项目 41572261

国家自然科学基金项目 41502277

中央高校基本科研业务费专项资金项目 310826175029

中央高校基本科研业务费专项资金项目 300102268209

中央高校基本科研业务费专项资金项目 310826171016

详细信息

作者简介:
李楠(1990-), 女, 在读博士, 主要从事滑坡治理及建筑安全研究。E-mail:linan1990111@163.com

通讯作者:
汪班桥(1977-), 女, 博士, 副教授, 主要从事滑坡治理研究。E-mail:dcdgx17@chd.edu.cn

中图分类号: P642.22
计量
- 文章访问数: 153
- HTML全文浏览量: 52
- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2018-01-09
- 修回日期: 2018-03-08
- 刊出日期: 2018-08-28

STUDY ON DYNAMIC RESPONSE OF LANDSLIDE SUPPORTED BY PRESSURE-TYPE ANCHOR UNDER EARTHQUAKE

1.
School of Geology Engineering and Geomatics, Chang an University, Xi'an 710054, Shaanxi, China
2.
School of Shaan'xi Railway Institute, Weinan 714000, Shaanxi, China

摘要

摘要: 为研究地震作用下锚固滑坡的动力响应特征及压力型锚杆的受力机制，采用ABAQUS有限元软件建立了压力型锚杆联合格构梁支护的锚固滑坡模型，在此基础上，分析了锚固滑坡的加速度响应规律、地震动参数对加速度响应的影响以及压力型锚杆的受力特征等。结果表明：地震作用下锚固滑坡具有明显的高程放大效应，坡顶响应最强；不同类型的地震波作用时，由于其频谱特性的差异，锚固滑坡的加速度响应不同，锚固滑坡对输入地震波的低频段存在放大作用，对高频段具有滤波作用；随地震波幅值的增大，锚固滑坡的加速度响应呈先减小后增大的趋势。对于同一根锚杆而言，锚杆杆体轴力分布较均匀；对于同列不同排的锚杆而言，各排锚杆杆体的轴力值差异较大，自上而下呈"C"型分布，底排锚杆和顶排锚杆承担大部分荷载。研究结果对于压力型锚杆支护滑坡的抗震设计具有一定的指导意义。
- 地震 /
- 锚固滑坡 /
- 压力型锚杆 /
- 动力响应 /
- 数值模拟
Abstract: In order to study dynamic response of anchorage landslide and mechanical behaviors of pressure-type anchor under earthquake, the finite element software ABAQUS was adopted and an anchorage landslide model supported by pressure-type anchor and lattice beam was established. On that basis, the acceleration response law of anchorage landslide, the effect of ground motion parameters on acceleration response of the model, and the mechanical behaviors of pressure-type anchor under earthquake were researched respectively. The results indicated that anchorage landslide had elevation amplification effect from bottom to top along with the landslide, and the acceleration response in crest was the strongest. Due to the spectrum characteristics of earthquake, acceleration response is different under different seismic waves. The anchorage landslide had an amplifying effect on lower frequency band and an attenuation function on higher frequency band. With the increase of loading amplitude, the acceleration response of anchorage landslide decreased first and then increased. For the same anchor, axial force distribution was nearly uniform; however, for the anchors at different elevation, axial force of anchors had a great difference, and the strain distribution of anchor body shows the "C"-type from bottom to top. The bottom anchor and the top anchor bear most of the loads. The research results could provide a reasonable foundation for the design of the pressure-type anchor under earthquake.
- earthquake /
- anchorage landslide /
- pressure-type anchor /
- dynamic response /
- numerical simulation

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图 1 压力型锚杆结构示意图

Figure 1. The sketch map of a pressure anchor

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图 2 压力型锚杆联合格构梁支护滑坡

Figure 2. The landslide supported by anchor and lattice beam structure pressure-type

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图 3 计算模型

Figure 3. Calculation model of anchorage landslide

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图 4 输入地震波的加速度时程

Figure 4. Time-history of input seismic waves

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图 5 坡面测点PGA放大系数

Figure 5. PGA amplification coefficient of slope surface measuring points

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图 6 测点加速度傅里叶谱

Figure 6. Acceleration fourier spectrums of measuring points

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图 7 不同类型地震波作用下坡面测点PGA放大系数

Figure 7. PGA amplification coefficient of slope surface measuring points under different seismic waves

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图 8 不同幅值地震波作用下边坡测点PGA放大系数

Figure 8. PGA amplification coefficient of slope surface measuring points under different amplitudes

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图 9 不同时间压缩常数下滑坡测点PGA放大系数

Figure 9. PGA amplification coefficient of slope surface measuring points under earthquake in different time similitude constants

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图 10 底排锚杆杆体轴力峰值

Figure 10. Axial force peak values of the bottom anchor body

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图 11 各排锚杆的平均轴力峰值

Figure 11. Average axial force peak values of anchors at each layer

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表 1 锚固滑坡物理力学参数

Table 1. Physical mechanics parameters of anchorage landslide

材料参数	密度/ (kg/m³)	弹性模量/ MPa	泊松比	黏聚力/ KPa	内摩擦角/(°)	阻尼比
土体	2070	450	0.19	35.7	23.5	0.10
格构	2430	2.5×10⁴	0.2	-	-	0.02
杆体	7850	2.1×10⁵	0.3	-	-	0.02
砂浆	1900	1.5×10⁴	0.15	-	-	0.02

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表 2 地震荷载输入工况

Table 2. Information of input seismic waves

工况	地震波类型	幅值/(m/s²)	时间压缩比	持时/s
E-1	El Centro波	0.1g	1	30
E-2	El Centro波	0.2g	1	30
E-3	El Centro波	0.3g	1	30
E-4	El Centro波	0.4g	1	30
E-5	El Centro波	0.6g	1	30
W-1	汶川波	0.3g	1	45
K-1	Kobe波	0.3g	1	25
K-2	Kobe波	0.3g	1.78	14
K-3	Kobe波	0.3g	3.16	7.9

下载: 导出CSV

参考文献(22)

[1]	李浩, 杨为民, 黄晓, 等.天水市麦积区税湾地震黄土滑坡特征及其形成机制[J].地质力学学报, 2016, 22(1):12~24. http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20160102&journal_id=dzlxxb LI Hao, YANG Weimin, HUANG Xiao, et al. Characteristics and deformation mechanism of Shuiwan seismic loess landslide in Maiji, Tianshui[J]. Journal of Geomechanics, 2016, 22(1):12~24. (in Chinese with English abstract) http://journal.geomech.ac.cn/ch/reader/view_abstract.aspx?flag=1&file_no=20160102&journal_id=dzlxxb
[2]	周德培, 张建经, 汤涌.汶川地震中道路边坡工程震害分析[J].岩石力学与工程学报, 2010, 29(3):565~576. http://www.cqvip.com/QK/96026X/201003/33175660.html ZHOU Depei, ZHANG Jianjing, TANG Yong. Seismic damage analysis of road slopes in Wenchuan earthquake[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(3):565~576. (in Chinese with English abstract) http://www.cqvip.com/QK/96026X/201003/33175660.html
[3]	Hong Y S, Chen R H, Wu C S, et al. Shaking table tests and stability analysis of steep nailed slopes[J]. Canadian Geotechnical Journal, 2005, 42(5):1264~1279. doi: 10.1139/t05-055
[4]	Wartman J, Seed R B, Bray J D. Shaking table modeling of seismically induced deformations in slopes[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2005, 131(5):610~622. doi: 10.1061/(ASCE)1090-0241(2005)131:5(610)
[5]	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. http://www.cqvip.com/QK/90596X/201203/42027379.html ZHU Hongwei, YAO Lingkan, XIANG Qin. A study of the effect of bolt length on dynamic response of anchored slopes under earthquakes[J]. Hydrogeology & Engineering Geology, 2012, 39(3):54~59. (in Chinese with English abstract) http://www.cqvip.com/QK/90596X/201203/42027379.html
[6]	汪班桥, 郝建斌, 黄毓挺, 等.滑坡防治格构梁锚杆地震动力响应分析[J].四川大学学报(工程科学版), 2016, 48(3):48~54. http://www.cqvip.com/QK/90462B/201603/668855368.html WANG Banqiao, HAO Jianbin, HUANG Yuting, et al. Dynamic response for framed anchors in landslide prevention under earthquake[J]. Journal of Sichuan University (Engineering Science Edition), 2016, 48(3):48~54. (in Chinese with English abstract) http://www.cqvip.com/QK/90462B/201603/668855368.html
[7]	郝建斌, 郭进扬, 张振北, 等.地震作用下锚杆支护边坡动力响应[J].交通运输工程学报, 2017, 17(3):46~55. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gsgydx201005025 HAO Jianbin, GUO Jinyang, ZHANG Zhenbei, et al. Dynamic response of anchors-supported slope under earthquake[J]. Journal of Traffic and Transportation Engineering, 2017, 17(3):46~55. (in Chinese with English abstract) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=gsgydx201005025
[8]	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. http://www.cqvip.com/QK/96026X/201110/39752707.html WEN Changping, YANG Guolin. 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 with English abstract) http://www.cqvip.com/QK/96026X/201110/39752707.html
[9]	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. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zngydxxb201204045 YANG Guolin, WEN Changping. 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 with English abstract) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zngydxxb201204045
[10]	赖杰, 郑颖人, 刘云, 等.抗滑桩和锚杆联合支护下边坡抗震性能振动台试验研究[J].土木工程学报, 2015, 48(9):96~103. http://www.cqvip.com/QK/90342X/201509/665936064.html LAI Jie, ZHENG Yingren, LIU Yun, et al. Shaking table text study on anti-slide piles and anchor bars of slope under earthquake[J]. China Civil Engineering Journal, 2015, 48(9):96~103. (in Chinese with English abstract) http://www.cqvip.com/QK/90342X/201509/665936064.html
[11]	汪鹏程, 朱大勇, 许强.强震作用下加固边坡的动力响应及不同加固方式的比较研究[J].合肥工业大学学报(自然科学版), 2009, 32(10):1501~1504. doi: 10.3969/j.issn.1003-5060.2009.10.012 WANG Pengcheng, ZHU Dayong, XU Qiang. Dynamic response of slopes subjected to intense earthquakes and effect comparison between various support modes[J]. Journal of Hefei University of Technology (Natural Science), 2009, 32(10):1501~1504. (in Chinese with English abstract) doi: 10.3969/j.issn.1003-5060.2009.10.012
[12]	叶帅华. 黄土地区框架预应力锚杆支护边坡地震动反应及稳定性分析[D]. 兰州: 兰州理工大学, 2012. YE Shuaihua. Dynamic response and stability analysis of slope supported by frame with pre-stressed anchors under earthquake in loess area[D]. Lanzhou: Lanzhou University of Technology, 2012. (in Chinese with English abstract)
[13]	Ji Q W, Xu Q, Wang T N, et al. Seismic performance analysis of fill slope with pre-stressed anchors[J]. Applied Mechanics and Materials, 2013, 353~356:2052~2056. doi: 10.4028/www.scientific.net/AMM.353-356
[14]	Dong J H, Zhu Y P, Zhou Y, et al. Dynamic calculation model and seismic response for frame supporting structure with prestressed anchors[J]. Science China Technological Sciences, 2010, 53(7):1957~1966. doi: 10.1007/s11431-010-3241-z
[15]	毕忠伟, 张明, 金峰, 等.地震作用下边坡的动态响应规律研究[J].岩土力学, 2009, 30(S1):180~183. http://www.cqvip.com/QK/89807X/201505/664862610.html BI Zhongwei, ZHANG Ming, JIN Feng, et al. Dynamic response of slopes under earthquakes[J]. Rock and Soil Mechanics, 2009, 30(S1):180~183. (in Chinese with English abstract) http://www.cqvip.com/QK/89807X/201505/664862610.html
[16]	张妙芝. 滑坡防治压力型锚固系统地震动力响应分析[D]. 西安: 长安大学, 2016. ZHANG Miaozhi. Study on the dynamic response for compression-type anchorage system under the action of earthquake in landslide prevention[D]. Xi'an: Chang'an University, 2016. (in Chinese with English abstract)
[17]	江学良, 祝中林, 杨慧, 等.含隧道岩石边坡在地震作用下动力响应特性研究[J].自然灾害学报, 2016, 25(2):94~102. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgncslsd200712021 JIANG Xueliang, ZHU Zhonglin, YANG Hui, et al. Study on dynamic response characteristics of rock slope with tunnel under earthquake[J]. Journal of Natural Disasters, 2016, 25(2):94~102. (in Chinese with English abstract) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=zgncslsd200712021
[18]	刘晶波, 谷音, 杜义欣.一致粘弹性人工边界及粘弹性边界单元[J].岩土工程学报, 2006, 28(9):1070~1075. http://www.oalib.com/paper/4372909 LIU Jingbo, GU Yin, DU Yixin. Consistent viscous-spring artificial boundaries and viscous-spring boundary elements[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(9):1070~1075. (in Chinese with English abstract) http://www.oalib.com/paper/4372909
[19]	徐光兴, 姚令侃, 李朝红, 等.边坡地震动力响应规律及地震动参数影响研究[J].岩土工程学报, 2008, 30(6):918~923. http://www.oalib.com/paper/4372820 XU Guangxing, YAO Lingkan, LI Zhaohong, 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 with English abstract) http://www.oalib.com/paper/4372820
[20]	陈新民, 沈建, 魏平, 等.下蜀土边坡地震稳定性的大型振动台试验研究(Ⅱ)——试验结果及分析[J].防灾减灾工程学报, 2010, 30(6):587~594. http://www.cnki.com.cn/Article/CJFDTotal-SGJS201513018.htm CHEN Xinmin, SHEN Jian, WEI Ping, et al. Large-scale shaking table test of seismic stability of Xiashu loess slopes:Analysis of test results (Ⅱ)[J]. Journal of Disaster Prevention and Mitigation Engineering, 2010, 30(6):587~594. (in Chinese with English abstract) http://www.cnki.com.cn/Article/CJFDTotal-SGJS201513018.htm
[21]	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. http://www.cnki.com.cn/Article/CJFDTotal-XAGX201505009.htm HAO Jianbin, YAO Jie, HUANG Yuting, 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 with English abstract) http://www.cnki.com.cn/Article/CJFDTotal-XAGX201505009.htm
[22]	汪班桥, 门玉明, 郝建斌.拉压锚杆锚固性能的对比试验分析[J].长安大学学报(自然科学版), 2013, 33(4):68~74. http://www.oalib.com/paper/4327479 WANG Banqiao, MEN Yuming, HAO Jianbin. Experiment and analysis of anchorage performances of pressure type and tensile type anchor[J]. Journal of Chang'an University (Natural Science Edition), 2013, 33(4):68~74. (in Chinese with English abstract) http://www.oalib.com/paper/4327479