复合多层滑床条件下锚索抗滑桩受力特征研究

doi:10.13722/j.cnki.jrme.2019.0349

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1041 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要目前，复杂滑坡中锚索抗滑桩的计算模型对实际地质条件考虑尚不够充分。鉴于此，基于桩–锚变形协调原理，构建了复合多层滑床条件下锚索抗滑桩计算分析模型。考虑滑坡的滑床为复合多层的情况，提出复合多层嵌固段抗滑桩内力和变形计算方法，并通过联立方程组求解出各排锚索拉力，进而得到锚索抗滑桩整个桩身内力和位移分布特征；完善了计算模型的控制条件，采用桩顶位移和桩身侧壁应力共同对改进的计算模型进行了合理性验证。基于MATLAB平台编写了改进算法的计算程序，将改进算法与传统算法应用于2个滑坡实例的计算中，并通过数值模拟与实际监测数据分别对实例1与实例2的计算结果进行对比分析。结果表明：改进算法相比传统算法准确性更高，且改进算法得到的桩身变形及内力均小于传统算法，桩顶位移减小比例分别为17.0%和28.7%，最大弯矩值减小比例分别为10.64%和20.90%，可见，传统算法的设计偏于保守，会导致工程造价偏高。研究方法可为复合多层滑床中锚索抗滑桩设计提供一定的理论依据与借鉴参考。

	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
	王贵华1
	李长冬1
	2
	陈文强1
	熊爽1
	于淼1
	张华伟1

关键词 ：桩基础, 多层滑床, 锚索抗滑桩, 变形协调, 内力计算

Abstract：Aiming at that the existing calculation model of anchored slide-resistant piles fails to fully consider the actual geological conditions，a calculation and analysis model of anchored slide-resistant piles under the condition of compound multilayer sliding bed was established based on the theory of deformation coordination. The tension forces of each row of cables can be solved by simultaneous equations，and then the distributions of the internal force and displacement of anti-slide piles are obtained. The control conditions of the calculation model were improved and the rationality of the improved calculation model was verified by the displacement of the pile top and the stress of the pile side. The computation program of the improvement method was written by MATLAB and two project cases were calculated by both improved and traditional algorithms. Comparisons between the calculation results of two cases by numerical simulation and practical monitoring data show that the improved algorithm is more accurate than the traditional algorithm and that both the deformation and the internal force of the pile calculated by the improved algorithm are smaller than those by the traditional algorithm. For two cases，to be specific，the displacements of the pile top decrease by 17.0% and 28.7% respectively and the maximum bending moments decrease by 10.64% and 20.90% respectively. It is indicated that the traditional method is conservative for design and hence results in a higher project cost. The proposed method can provide a theoretical basis and reference for the design of anchored slide-resistant piles in the area of composite multilayer rock mass.

Key words： pile foundation multilayer sliding bed anchored slide-resistant pile deformation coordination internal force calculation

引用本文:

王贵华1，李长冬1，2，陈文强1，熊爽1，于淼1，张华伟1. 复合多层滑床条件下锚索抗滑桩受力特征研究[J]. 岩石力学与工程学报, 2019, 38(11): 2219-2230.
WANG Guihua1，LI Changdong1，2，CHEN Wenqiang1，XIONG Shuang1，YU Miao1，ZHANG Huawei1. Mechanical characteristics of anchored slide-resistant piles under the condition of composite multilayer sliding bed. , 2019, 38(11): 2219-2230.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2019.0349 或 http://www.rockmech.org/CN/Y2019/V38/I11/2219

[2]	HASSIOTIS S，CHAMEAU J L，GUNARATNE M. Design method for stabilization of slopes with piles[J]. Journal of Geotechnical and Geoenvironmental Engineering，1997，125(10)：314-323.
[4]	ASHOUR M，NORRIS G. Modeling lateral soil-pile response based on soil-pile interaction[J]. Journal of Geotechnical and Geoenvironmental Engineering，2000，126(5)：420-428.
[3]	KANAGASABAI S. Three-dimensional numerical modelling of rows of discrete piles used to stabilise large landslides[J]. Canadian Geotechnical Journal，2011，48(9)：1 393-1 411.
[6]	MOAYEDI H，NAZIR R，MOSALLANEZHAD M，et al. Lateral deflection of piles in a multilayer soil medium. Case study：the Terengganu seaside platform[J]. Measurement，2018，123：185-192.
[7]	毛明章，邹先锋. 预应力锚索抗滑桩协同工作机制[J]. 地下空间与工程学报，2010，6(增2)：1 552-1 555.(MAO Mingzhang，ZOU Xianfeng. Research on mechanism of collaborative working of prestressed anchor anti-slide piles[J]. Chinese Journal of Underground Space and Engineering，2010，6(Supp.2)：1 552-1 555.(in Chinese))
[10]	励国良. 锚索抗滑桩的设计计算及其试验验证[C]// 滑坡文集(第十集). 北京：中国铁道出版社，2002：121-131.(LI Guoliang. Design calculation and test verification of anchor cable anti-slide pile[C]// Anthologies of Landslides(Vol.10). Beijing：China Railway Publishing House，2002：121-131.(in Chinese))
[16]	ZHAO G Q，YANG Y Y，ZHANG H Q，et al. A case study integrating ?eld measurements and numerical analysis of high?ll slope stabilized with cast-in-place piles in Yunnan，China[J]. Engineering Geology，2019，253：160-170.
[20]	晏鄂川，刘焕斌，李相依，等. 桩锚结构变形协调方法的改进研究[J]. 岩土力学，2009，30(5)：1 446-1 450.(YAN Echuan，LIU Huanbin，LI Xiangyi，et al. Improvement of compatible distortion method for structure of pile-anchor[J]. Rock and Soil Mechanics，2009，30(5)：1 446-1 450.(in Chinese))
[26]	董曼曼，王亮清，葛云峰，等. 考虑滑床复合倾斜岩体综合地基系数的抗滑桩受力特征研究[J]. 岩土力学，2017，38(10)：3 000-3 008. (DONG Manman，WANG Liangqing，GE Yunfeng，et al. Mechanical characteristics of anti-sliding pile considering comprehensive foundation coefficient of sliding bed on composite inclined rock mass[J]. Rock and Soil Mechanics，2017，38(10)：3 000-3 008.(in Chinese))
[30]	曾江波. 龙华新区观湖办事处金园路附属边坡工程设计总说明[R]. 深圳：深圳市勘察测绘院有限公司，2016.(ZENG Jiangbo. The engineering general description about affiliated slope on the side of the Jinyuan road in Guanhu office of Longhua new area[R]. Shenzhen：Shenzhen Geotechnical Investigation and Surveying Institude Co.，Ltd.，2016.(in Chinese))
[8]	李凯玲，门玉明. 锚索抗滑桩与岩土体相互作用研究[J]. 水文地质工程地质，2006，33(1)：20-22.(LI Kailing，MEN Yuming. Study of the interaction among anti-slide pile，anchor and soil body[J]. Hydrogeology and Engineering Geology，2006，33(1)：20-22.(in Chinese))
[18]	陈昌富，肖淑君. 预应力锚固抗滑桩内力计算的加权残值法[J]. 岩土力学，2010，31(3)：896-902.(CHEN Changfu，XIAO Shujun. Stress calculation of prestressed anchor anti-slide pile based on weighted residual method[J]. Rock and Soil Mechanics，2010，31(3)：896-902.(in Chinese))
[28]	李长冬，唐辉明，胡新丽，等. 三峡库区侏罗系地层滑坡中抗滑桩布设和结构优化研究[M]. 武汉：中国地质大学出版社，2015：106-110.(LI Changdong，TANG Huiming，HU Xinli，et al. Plane arrangement and structure optimization of stabilizing piles for landslides developing in Jurassic strata of Three Gorges Reservior Region[M]. Wuhan：China University of Geosciences Press，2015：106-110.(in Chinese))
[1]	NOVAKM. Pile-Soil-Pile Interaction under Small and Large Displacements[C]// Developments in Dynamic Soil-Structure Interaction. [S. l.]：Springer Netherlands，1993：361-380.
[12]	王化卿，李传珠，刘励忠，等. 预应力锚索抗滑桩设计与施工[C]// 滑坡文集(第七集). 北京：中国铁道出版社，1986：34-41.(WANG Huaqing，LI Chuanzhu，LIU Lizhong，et al. Design and construction of prestressed anchor cable anti-slide pile[C]// Anthologies of Landslides (Vol.7). Beijing：China Railway Publishing House，1986：34-41.(in Chinese))
[14]	桂树强，殷坤龙，罗平. 预应力锚索抗滑桩治理滑坡应用研究[J]. 岩土力学，2003，24(增2)：239-243.(GUI Shuqiang，YIN Kunlong，LUO Ping. A study on applications of stabilizing piles with prestressed anchor cables in landslides remediation works[J]. Rock and Soil Mechanics，2003，24(Supp.2)：239-243.(in Chinese))
[22]	铁道部第二勘测设计院. 抗滑桩设计与计算[M]. 北京：中国铁道出版社，1983：81-86.(No.2 Survey and Design Institute，Ministry of Railways. Design and calculation of anti-slide pile[M]. Beijing：China Railway Publishing House，1983：81-86.(in Chinese))
[24]	田景贵，范草原. 预应力锚索抗滑桩机制初步分析及设计[J]. 重庆交通大学学报，1998，17(4)：59-64.(TIAN Jinggui，FAN Caoyuan. The principle and design of retaining piles with prestressing cables[J]. Journal of Chongqing Jiaotong Institute，1998，17(4)：59-64.(in Chinese))
[9]	胡田飞，朱本珍，刘建坤，等. 预应力锚索对微型桩结构抗滑性能影响的试验研究[J]. 中国铁道科学，2017，38(3)：10-18.(HU Tianfei，ZHU Benzhen，LIU Jiankun，et al. Experimental research on effect of prestressed anchor cable on anti-sliding performance of micropile structure[J]. China Railway Science，2017，38(3)：10-18.(in Chinese))
[5]	ASHOUR M，ARDALAN H. Analysis of pile stabilized slopes based on soil-pile interaction[J]. Computers and Geotechnics，2012，39：85-97.
[11]	MA N，WU H G，MA H M，et al. Examining dynamic soil pressures and the e?ectiveness of di?erent pile structures inside reinforced slopes using shaking table tests[J]. Soil Dynamics and Earthquake Engineering，2019，116：293-303.
[13]	周德培，王建松. 预应力锚索桩内力的一种计算方法[J]. 岩石力学与工程学报，2002，21(2)：247-250.(ZHOU Depei，WANG Jiansong. Design method of retaining pile with prestressed cable[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(2)：247-250. (in Chinese))
[15]	周春梅，殷坤龙，罗冲. 锚拉桩应用于水库库岸滑坡治理的关键问题探讨[J]. 岩土力学，2005，26(3)：450-454.(ZHOU Chunmei，YIN Kunlong，LUO Chong. A study on some key questions of cable-anchored piles of landslides in reservoir shore lines[J]. Rock and Soil Mechanics，2005，26(3)：450-454.(in Chinese))
[17]	刘小丽，张占民，周德培. 预应力锚索抗滑桩的改进计算方法[J]. 岩石力学与工程学报，2004，23(15)：2 568-2 572.(LIU Xiaoli，ZHANG Zhanming，ZHOU Depei. Improved method for computing anti-sliding pile with prestressed anchoring cable[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(15)：2 568-2 572.(in Chinese))
[19]	陈昌富，曾松林，刘一俊. 考虑预应力损失桩-锚结构内力计算的加权残值法[J]. 岩土力学，2018，39(12)：4 569-4 576.(CHEN Changfu，ZENG Songlin，LIU Yijun. Calculation of the internal forces of pile-anchor cable structure considering the prestressed loss based on weighted residual method[J]. Rock and Soil Mechanics，2018，39(12)：4 569-4 576.(in Chinese))
[21]	简文星，邓先华. 优化的变形协调条件在桩-锚结构锚索拉力计算中的应用[J]. 岩土力学，2014，35(8)：2 171-2 178.(JIAN Wenxing，DENG Xianhua. Application of optimized deformation consistence condition to anchor cable tensile force calculation of pile-anchor cable structure[J]. Rock and Soil Mechanics，2014，35(8)：2 171-2 178.(in Chinese))
[23]	龙驭球. 结构力学[M]. 北京：高等教育出版社，2012：145-148.(LONG Yuqiu. Structural mechanics[M]. Beijing：Advanced Education Press，2012：145-148.(in Chinese))
[25]	刘卫民，尉学勇，蔡庆娥. 关于预应力锚索抗滑桩设计的思考[J]. 路基工程，2006，(2)：48-51.(LIU Weimin，WEI Xueyong，CAI Qinge. Thinking about the design of the anti-slide pile with prestressed cable[J]. Subgrade Engineering，2006，(2)：48-51.(in Chinese))
[27]	LEI G P，TANG H M，WU W. A pile-soil separation concerned model for laterally loaded piles in layered soils[J]. Springer Series in Geomechanics and Geoengineering，2015：211-228.
[29]	汪班桥. 支挡结构设计[M]. 北京：冶金工业出版社，2012：142-146.(WANG Banqiao. Retaining structure design[M]. Beijing：Metallurgical Industry Press，2012：142-146.(in Chinese))