Comparison of horizontal push-pile model tests between non-beam double-row anti-slide piles and single-row anti-slide piles
-
摘要:
在大型滑坡防治工程设计中，采用何种形式的抗滑桩进行支护是一个关键问题。为了研究双排抗滑桩与单排抗滑桩加固边坡的效果，通过大型物理模拟模型开展了无连梁双排桩与单排桩水平推桩的对比试验，并深入分析了坡体破坏模式及桩体受力特性方面的差异。结果表明：（1）坡体破坏时，单排桩在桩间前后出现土拱效应，而双排桩却因为绕流的原因形成了“八”字形裂缝且后排桩还出现了挠曲现象；（2）无论是单排桩还是双排桩，其桩顶位移曲线都展现了压密变形、弹性变形、加速变形和塑性破坏四个阶段特征，在加速变形阶段，后排桩桩顶位移大约是前排桩的2倍，单排桩桩顶位移大约是同桩位前排桩的1.5倍，受到“遮挡效应”的影响，双排桩的抗滑效果比单排桩好15%左右；（3）桩侧土压力均沿着桩身大致呈三角形—梯形的分布，并且桩后土压力都大于桩前土压力；在桩身弯矩方面，二者均呈现出类似于抛物线的分布趋势，并且在靠近滑面处（滑面之上7 cm）弯矩最大；（4）在水平推力相同的情况下，后排桩的弯矩最大，其次是单排桩，前排桩弯矩最小。由于后排桩的存在使得前排桩的最大弯矩比单排桩降低了27%左右，从而提高了抗滑桩的抗滑效果。研究结果可为滑坡防治工程的设计和治理提供指导。
Abstract:In large-scale landslide control engineering design, the selection of anti-slide pile support is a critical design consideration. To investigate the effectiveness of double-row anti-slide piles compared to single-row reinforcement for slopes, this study conducted comparative tests of unconnected double-row piles and single-row piles using a large-scale physical simulation model, and the differences in slope damage modes and pile force characteristics were analyzed in depth. The results indicate that during slope failure, single-row piles exhibit soil arching effects between the piles, while double-row piles form “eight”-shaped cracks due to flow around the piles, with the rear piles experiencing bending. Both single-row and double-row piles exhibit four stages of deformation characteristics in their pile head displacement curves: densification deformation, elastic deformation, accelerated deformation, and plastic failure. In the accelerated deformation stage, the pile head displacement of rear piles is approximately twice that of front piles for double-row piles, and for single-row piles, it is approximately 1.5 times that of the front piles. Due to the “shielding effect”, the anti-slide effect of double-row piles is approximately 15% higher than that of single-row piles. The lateral soil pressure along the pile body generally exhibits a triangular-trapezoidal distribution, with the soil pressure behind the pile greater than that in front of the pile. Regarding pile bending moments, both exhibit a distribution trend similar to a parabola, with the maximum moment occurring near the sliding surface (7 cm above it). Additionally, under the same horizontal thrust, the rear pile experiences the maximum bending moment, followed by the single-row pile, while the front pile experiences the minimum bending moment. The presence of rear piles reduces the maximum bending moment of front piles by approximately 27% compared to single-row piles, thus enhancing the anti-slide effect of the pile. These findings provide guidance for the design and treatment of landslide control engineering projects.
-
-
表 2 模型材料物理力学参数
Table 2. Physical and mechanical parameters of the model materials
名称 材料 重度
/（kN·m−3）黏聚力
/kPa内摩擦角
/（°）泊松比 滑体 黏质砂土 20.5 37 37 0.31 滑床 石英砂岩 26.0 220 45 0.20 抗滑桩 钢筋混凝土 24.0 按弹性材料处理 0.20 
下载: 导出CSV
-
[1] 黎俊杰,肖世国. 穿坡油气管道的框架桩防护结构分析方法[J]. 吉林大学学报(地球科学版),2024,54(5):1615 − 1628. [LI Junjie,XIAO Shiguo. Analysis method of frame-type stabilizing piles for protecting petroleum pipelines through hillslopes[J]. Journal of Jilin University (Earth Science Edition),2024,54(5):1615 − 1628. (in Chinese with English abstract)]
LI Junjie, XIAO Shiguo. Analysis method of frame-type stabilizing piles for protecting petroleum pipelines through hillslopes[J]. Journal of Jilin University （Earth Science Edition）, 2024, 54（5）: 1615 − 1628. （in Chinese with English abstract）
[2] 宫凤梧,刘晨,郭文娟,等. 双排桩双梁组合支护刚度计算的改进与位移分析[J]. 水文地质工程地质,2022,49(1):109 − 116. [GONG Fengwu,LIU Chen,GUO Wenjuan,et al. Improved calculation of the rigidity of double-row piles and double-beam composite support and displacement analysis under different soil properties[J]. Hydrogeology & Engineering Geology,2022,49(1):109 − 116. (in Chinese with English abstract)]
GONG Fengwu, LIU Chen, GUO Wenjuan, et al. Improved calculation of the rigidity of double-row piles and double-beam composite support and displacement analysis under different soil properties[J]. Hydrogeology & Engineering Geology, 2022, 49（1）: 109 − 116. （in Chinese with English abstract）
[3] 李阳,南亚林,贺海超,等. 黄土双排抗滑桩模型试验[J]. 安全与环境学报,2022,22(3):1315 − 1322. [LI Yang,NAN Yalin,HE Haichao,et al. Research on model test of double row anti-slide piles in loess[J]. Journal of Safety and Environment,2022,22(3):1315 − 1322. (in Chinese with English abstract)]
LI Yang, NAN Yalin, HE Haichao, et al. Research on model test of double row anti-slide piles in loess[J]. Journal of Safety and Environment, 2022, 22（3）: 1315 − 1322. （in Chinese with English abstract）
[4] 唐芬,郑颖人,杨波. 双排抗滑桩的推力分担及优化设计[J]. 岩石力学与工程学报,2010,29(增刊1):3162 − 3168. [TANG Fen,ZHENG Yingren,YANG Bo. Thrust share ratios and optimization design for two-row anti-slide piles[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(Sup 1):3162 − 3168. (in Chinese with English abstract)]
TANG Fen, ZHENG Yingren, YANG Bo. Thrust share ratios and optimization design for two-row anti-slide piles[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29（Sup 1）: 3162 − 3168. （in Chinese with English abstract）
[5] 周孝鑫,谭钦文,林志果,等. 京广铁路K1219路基土质边坡深层滑移失稳机制与整治对策[J]. 地质科技通报,2022,41(6):85 − 94. [ZHOU Xiaoxin,TAN Qinwen,LIN Zhiguo,et al. Deep sliding instability mechanism and remediation measures: The subgrade soil slope along the Jingguang Railway at K1219[J]. Bulletin of Geological Science and Technology,2022,41(6):85 − 94. (in Chinese with English abstract)]
ZHOU Xiaoxin, TAN Qinwen, LIN Zhiguo, et al. Deep sliding instability mechanism and remediation measures: The subgrade soil slope along the Jingguang Railway at K1219[J]. Bulletin of Geological Science and Technology, 2022, 41（6）: 85 − 94. （in Chinese with English abstract）
[6] WANG Chengtang,WANG Hao,QIN Weimin,et al. Behaviour of pile-anchor reinforced landslides under varying water level,rainfall,and thrust load:Insight from physical modelling[J]. Engineering Geology,2023,325:107293. doi: 10.1016/j.enggeo.2023.107293
[7] 邓时容,肖世国. 嵌固段顶部拓宽型抗滑桩计算方法[J]. 中国地质灾害与防治学报,2022,33(4):84 − 91. [DENG Shirong,XIAO Shiguo. Calculation method of stabilizing piles with broadened top at the built-in section[J]. The Chinese Journal of Geological Hazard and Control,2022,33(4):84 − 91. (in Chinese with English abstract)]
DENG Shirong, XIAO Shiguo. Calculation method of stabilizing piles with broadened top at the built-in section[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33（4）: 84 − 91. （in Chinese with English abstract）
[8] 申永江,黄立,严克伍. 悬臂双排桩桩排距的计算方法研究[J]. 水文地质工程地质,2012,39(5):59 − 63. [SHEN Yongjiang,HUANG Li,YAN Kewu. Calculation method of the piles row distance of cantilever double-row anti-slide piles[J]. Hydrogeology & Engineering Geology,2012,39(5):59 − 63. (in Chinese with English abstract)]
SHEN Yongjiang, HUANG Li, YAN Kewu. Calculation method of the piles row distance of cantilever double-row anti-slide piles[J]. Hydrogeology & Engineering Geology, 2012, 39（5）: 59 − 63. （in Chinese with English abstract）
[9] 敖贵勇,张玉芳,赵尚毅,等. 埋入式抗滑桩承担的滑坡推力分析[J]. 工程力学,2020,37(增刊1):187 − 192. [AO Guiyong,ZHANG Yufang,ZHAO Shangyi,et al. Analysis of landslide thrust acting on embedded anti-slide pile[J]. Engineering Mechanics,2020,37(Sup 1):187 − 192. (in Chinese with English abstract)]
AO Guiyong, ZHANG Yufang, ZHAO Shangyi, et al. Analysis of landslide thrust acting on embedded anti-slide pile[J]. Engineering Mechanics, 2020, 37（Sup 1）: 187 − 192. （in Chinese with English abstract）
[10] 邱志华. 门架式抗滑桩土拱效应的数值分析研究[J]. 土工基础,2018,32(3):318 − 321. [QIU Zhihua. Arching effect of the pile frames and its numerical simulations[J]. Soil Engineering and Foundation,2018,32(3):318 − 321. (in Chinese with English abstract)]
QIU Zhihua. Arching effect of the pile frames and its numerical simulations[J]. Soil Engineering and Foundation, 2018, 32（3）: 318 − 321. （in Chinese with English abstract）
[11] ZHAO Bo,WANG Yunsheng,WANG Yu,et al. Retaining mechanism and structural characteristics of h type anti-slide pile (hTP pile) and experience with its engineering application[J]. Engineering Geology,2017,222:29 − 37 doi: 10.1016/j.enggeo.2017.03.018
[12] 赖杰,郑颖人,刘云,等. 地震作用下双排抗滑桩支护边坡振动台试验研究[J]. 岩土工程学报,2014,36(4):680 − 686. [LAI Jie,ZHENG Yingren,LIU Yun,et al. Shaking table tests on double-row anti-slide piles of slopes under earthquakes[J]. Chinese Journal of Geotechnical Engineering,2014,36(4):680 − 686. (in Chinese with English abstract)] doi: 10.11779/CJGE201404012
LAI Jie, ZHENG Yingren, LIU Yun, et al. Shaking table tests on double-row anti-slide piles of slopes under earthquakes[J]. Chinese Journal of Geotechnical Engineering, 2014, 36（4）: 680 − 686. （in Chinese with English abstract） doi: 10.11779/CJGE201404012
[13] 胡爱国,周伟. 地震与强降雨作用下堆积体滑坡变形破坏机理及防治方案分析[J]. 中国地质灾害与防治学报,2022,33(1):27 − 34. [HU Aiguo,ZHOU Wei. Deformation and failure mechanism and analysis on prevention measures of colluction landslide under earthquake and heavy rainfall[J]. The Chinese Journal of Geological Hazard and Control,2022,33(1):27 − 34. (in Chinese with English abstract)]
HU Aiguo, ZHOU Wei. Deformation and failure mechanism and analysis on prevention measures of colluction landslide under earthquake and heavy rainfall[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33（1）: 27 − 34. （in Chinese with English abstract）
[14] 申永江,孙红月,尚岳全,等. 滑坡推力在悬臂式双排抗滑桩上的分配[J]. 岩石力学与工程学报,2012,31(增刊1):2668 − 2673. [SHEN Yongjiang,SUN Hongyue,SHANG Yuequan,et al. Distribution of landslide thrust on cantilever double-row anti-sliding piles[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(Sup 1):2668 − 2673. (in Chinese with English abstract)]
SHEN Yongjiang, SUN Hongyue, SHANG Yuequan, et al. Distribution of landslide thrust on cantilever double-row anti-sliding piles[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31（Sup 1）: 2668 − 2673. （in Chinese with English abstract）
[15] 肖世国. 考虑桩间土体抗滑作用的单排抗滑桩受力计算方法[J]. 中国地质灾害与防治学报,2020,31(1):89 − 94. [XIAO Shiguo. A calculation method for one row stabilizing piles considering resistance of soil between adjacent piles[J]. The Chinese Journal of Geological Hazard and Control,2020,31(1):89 − 94. (in Chinese with English abstract)]
XIAO Shiguo. A calculation method for one row stabilizing piles considering resistance of soil between adjacent piles[J]. The Chinese Journal of Geological Hazard and Control, 2020, 31（1）: 89 − 94. （in Chinese with English abstract）
[16] 薛德敏,李天斌,张帅. 基于位移控制的双排桩桩后滑坡推力计算方法[J]. 岩土工程学报,2023,45(9):1979 − 1986. [XUE Demin,LI Tianbin,ZHANG Shuai. Method for calculating landslide thrusts behind double-row piles based on displacement control[J]. Chinese Journal of Geotechnical Engineering,2023,45(9):1979 − 1986. (in Chinese with English abstract)] doi: 10.11779/CJGE20220687
XUE Demin, LI Tianbin, ZHANG Shuai. Method for calculating landslide thrusts behind double-row piles based on displacement control[J]. Chinese Journal of Geotechnical Engineering, 2023, 45（9）: 1979 − 1986. （in Chinese with English abstract） doi: 10.11779/CJGE20220687
[17] XIAO Shiguo,ZENG Jinxiu,YAN Yuping. A rational layout of double-row stabilizing piles for large-scale landslide control[J]. Bulletin of Engineering Geology and the Environment,2017,76(1):309 − 321. doi: 10.1007/s10064-016-0852-z
[18] 曹岩. 平行布设双排抗滑桩受力特性试验研究[D]. 西安:长安大学,2019. [Cao Yan. Experimental study on the mechanical behavior of double-row anti-slide piles installed in parallel[D]. Xi’an:Chang’an University,2019. (in Chinese with English abstract)]
Cao Yan. Experimental study on the mechanical behavior of double-row anti-slide piles installed in parallel[D]. Xi’an: Chang’an University, 2019. （in Chinese with English abstract）
[19] 闫玉平,肖世国. 双排抗滑桩后侧推力分布物理模型试验[J]. 中国地质灾害与防治学报,2022,33(2):79 − 87. [YAN Yuping,XIAO Shiguo. Physical model test on landslide thrust distribution on double-row stabilizing piles[J]. The Chinese Journal of Geological Hazard and Control,2022,33(2):79 − 87. (in Chinese with English abstract)]
YAN Yuping, XIAO Shiguo. Physical model test on landslide thrust distribution on double-row stabilizing piles[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33（2）: 79 − 87. （in Chinese with English abstract）
[20] 刘伟. 无连梁双排抗滑桩受力特性的试验研究[D]. 西安:长安大学,2018. [LIU Wei. Experimental study on the stress characteristics of double-row anti-slide pile without coupling beam[D]. Xi’an:Chang’an University,2018. (in Chinese with English abstract)]
LIU Wei. Experimental study on the stress characteristics of double-row anti-slide pile without coupling beam[D]. Xi’an: Chang’an University, 2018. （in Chinese with English abstract）
[21] MA Xianchun,XIAO Yang,MENG Lu. Model test of cantilevered double-row anti-sliding piles in steeply slipping landslides[J]. IOP Conference Series:Earth and Environmental Science,2020,570(6):062015. doi: 10.1088/1755-1315/570/6/062015
[22] 李永辉,张信,张鼎浩,等. 曲面滑坡条件下h型抗滑桩受力性状模型试验研究[J]. 工程力学,2024,41(7):134 − 146. [LI Yonghui,ZHANG Xin,ZHANG Dinghao,et al. Model test on mechanical behavior of h-type anti-slide pile under curved landslide[J]. Engineering Mechanics,2024,41(7):134 − 146. (in Chinese with English abstract)] doi: 10.6052/j.issn.1000-4750.2022.05.0498
LI Yonghui, ZHANG Xin, ZHANG Dinghao, et al. Model test on mechanical behavior of h-type anti-slide pile under curved landslide[J]. Engineering Mechanics, 2024, 41（7）: 134 − 146. （in Chinese with English abstract） doi: 10.6052/j.issn.1000-4750.2022.05.0498
[23] 赖纬明. 闽北山区土岩质边坡位移监测与稳定性分析[D]. 福州:福建农林大学,2019. [LAI Weiming. Displacement monitoring and stability analysis of soil and rock slope in northern Fujian mountainous area[D]. Fuzhou:Fujian Agriculture and Forestry University,2019. (in Chinese with English abstract)]
LAI Weiming. Displacement monitoring and stability analysis of soil and rock slope in northern Fujian mountainous area[D]. Fuzhou: Fujian Agriculture and Forestry University, 2019. （in Chinese with English abstract）
[24] 郑达,梁力丹,巨能攀. 低周往复荷载作用下预应力锚索震害特征研究[J]. 岩石力学与工程学报,2015,34(7):1353 − 1360. [ZHENG Da,LIANG Lidan,JU Nengpan. Seismic damage of prestressed anchor cables under low frequency cycling loads[J]. Chinese Journal of Rock Mechanics and Engineering,2015,34(7):1353 − 1360. (in Chinese with English abstract)]
ZHENG Da, LIANG Lidan, JU Nengpan. Seismic damage of prestressed anchor cables under low frequency cycling loads[J]. Chinese Journal of Rock Mechanics and Engineering, 2015, 34（7）: 1353 − 1360. （in Chinese with English abstract）
[25] 中华人民共和国国土资源部. 滑坡防治工程设计与施工技术规范:DZ/T 0219—2006[S]. 北京:中国标准出版社,2006. [Ministry of Land and Resources of the People’s Republic of China. Specification of design and construction for landslide stabilization:DZ/T 0219—2006[S]. Beijing:Standards Press of China,2006. (in Chinese)]
Ministry of Land and Resources of the People’s Republic of China. Specification of design and construction for landslide stabilization: DZ/T 0219—2006[S]. Beijing: Standards Press of China, 2006. （in Chinese）
[26] 陈秋南,周亚军,马晓朋,等. 基于双剪强度理论土拱效应的基坑支护桩间距分析[J]. 水文地质工程地质,2012,39(4):38 − 42. [CHEN Qiunan,ZHOU Yajun,MA Xiaopeng,et al. Analysis of the spacing between retaining piles based on twin shear strength theory soil arching effect in pit[J]. Hydrogeology & Engineering Geology,2012,39(4):38 − 42. (in Chinese with English abstract)]
CHEN Qiunan, ZHOU Yajun, MA Xiaopeng, et al. Analysis of the spacing between retaining piles based on twin shear strength theory soil arching effect in pit[J]. Hydrogeology & Engineering Geology, 2012, 39（4）: 38 − 42. （in Chinese with English abstract）
[27] 尤静霖,王士杰,王昊岚. 考虑土拱效应及中主应力影响的桩间挡板土压力计算方法[J]. 水文地质工程地质,2022,49(5):90 − 95. [YOU Jinglin,WANG Shijie,WANG Haolan. A calculation method of earth pressure on sheeting between two piles considering soil arching effect and intermediate principal stress[J]. Hydrogeology & Engineering Geology,2022,49(5):90 − 95. (in Chinese with English abstract)]
YOU Jinglin, WANG Shijie, WANG Haolan. A calculation method of earth pressure on sheeting between two piles considering soil arching effect and intermediate principal stress[J]. Hydrogeology & Engineering Geology, 2022, 49（5）: 90 − 95. （in Chinese with English abstract）
[28] LAI Hanjiang,ZHENG Junjie,CUI Mingjuan,et al. “Soil arching” for piled embankments:Insights from stress redistribution behaviour of DEM modelling[J]. Acta Geotechnica,2020,15(8):2117 − 2136. doi: 10.1007/s11440-019-00902-x
[29] 申永江,杨明,项正良,等. 双排桩桩排间土拱效应的发育规律研究[J]. 水文地质工程地质,2015,42(1):70 − 74. [SHEN Yongjiang,YANG Ming,XIANG Zhengliang,et al. Development of soil arching between the double-row anti-sliding piles[J]. Hydrogeology & Engineering Geology,2015,42(1):70 − 74. (in Chinese with English abstract)]
SHEN Yongjiang, YANG Ming, XIANG Zhengliang, et al. Development of soil arching between the double-row anti-sliding piles[J]. Hydrogeology & Engineering Geology, 2015, 42（1）: 70 − 74. （in Chinese with English abstract）
[30] GENG Zhe,JIN Dalong,YUAN Dajun. Face stability analysis of cohesion-frictional soils considering the soil arch effect and the instability failure process[J]. Computers and Geotechnics,2023,153:105050. doi: 10.1016/j.compgeo.2022.105050
[31] 许强,汤明高,徐开祥,等. 滑坡时空演化规律及预警预报研究[J]. 岩石力学与工程学报,2008,27(6):1104 − 1112. [XU Qiang,TANG Minggao,XU Kaixiang,et al. Research on space-time evolution laws and early warning-prediction of landslides[J]. Chinese Journal of Rock Mechanics and Engineering,2008,27(6):1104 − 1112. (in Chinese with English abstract)] doi: 10.3321/j.issn:1000-6915.2008.06.003
XU Qiang, TANG Minggao, XU Kaixiang, et al. Research on space-time evolution laws and early warning-prediction of landslides[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27（6）: 1104 − 1112. （in Chinese with English abstract） doi: 10.3321/j.issn:1000-6915.2008.06.003
[32] 郭富赟,张龙生,王信,等. 甘肃黑方台罗家坡滑坡演化过程及运动机制分析[J]. 中国地质灾害与防治学报,2023,34(2):11 − 20. [GUO Fuyun,ZHANG Longsheng,WANG Xin,et al. Analysis on evolution process and movement mechanism of the Luojiapo landslide in Heifangtai,Gansu Province[J]. The Chinese Journal of Geological Hazard and Control,2023,34(2):11 − 20. (in Chinese with English abstract)]
GUO Fuyun, ZHANG Longsheng, WANG Xin, et al. Analysis on evolution process and movement mechanism of the Luojiapo landslide in Heifangtai, Gansu Province[J]. The Chinese Journal of Geological Hazard and Control, 2023, 34（2）: 11 − 20. （in Chinese with English abstract）
-
图(10)
表(2)
计量
- 文章访问数: 32
- PDF下载数: 6
- 施引文献: 0