高陡堆积体滑坡半坡桩无效锚固深度分析
|
摘要
半坡桩与普通抗滑桩的受力机制不同,用常规的设计方法半坡桩的锚固深度不足,可能导致治理工程失效。为了分析半坡桩无效锚固深度,在分析高陡堆积体滑坡特点的基础上,根据抗滑桩受力机制重新厘定了半坡桩的概念;以弹性半坡桩为例,用数值分析方法重点研究了弹性半坡桩无效锚固深度与总的锚固深度、滑面倾角及滑坡推力的关系。结果表明,弹性半坡桩的无效锚固深度受总的锚固深度影响较小,当总的锚固深度增加时,无效锚固深度在小范围内波动;弹性半坡桩的无效锚固深度与滑面倾角及滑坡推力呈指数正相关性,随着滑面倾角及滑坡推力的增加,无效锚固深度也在增加。
The stress mechanism of hemi-slope anti-slide pile is different from that of ordinary anti-slide pile.The lack of anchorage depth of hemi-slope anti-slide pile with conventional design method may lead to the failure of treatment engineering. In order to study invalid anchorage depth analysis of hemi-slope anti-slide pile,on one hand,the concept of hemi-slope anti-slide pile was redefined based on the analysis of the characteristics of high dipping deposit landslide. On the other hand,taking elastic hemi-slope anti-slide pile as an example,the relationship between the ineffective anchorage depth of elastic hemi-slope anti-slide pile and the total anchorage depth,slope angle and landslide thrust was emphatically studied by numerical analysis methods. The study results show that the ineffective anchoring depth was less affected by the total anchoring depth. The increase of total anchoring depth will induce a small fluctuating range of ineffective anchoring depth. Moreover,the ineffective anchorage depth of elastic hemi-slope anti-slide pile had an exponential positive correlation with the inclination angle of slip surface and landslide thrust that with the increase of the inclination angle of sliding surface and the thrust of landslide,the ineffective anchorage depth also increased.
The stress mechanism of hemi-slope anti-slide pile is different from that of ordinary anti-slide pile.The lack of anchorage depth of hemi-slope anti-slide pile with conventional design method may lead to the failure of treatment engineering. In order to study invalid anchorage depth analysis of hemi-slope anti-slide pile,on one hand,the concept of hemi-slope anti-slide pile was redefined based on the analysis of the characteristics of high dipping deposit landslide. On the other hand,taking elastic hemi-slope anti-slide pile as an example,the relationship between the ineffective anchorage depth of elastic hemi-slope anti-slide pile and the total anchorage depth,slope angle and landslide thrust was emphatically studied by numerical analysis methods. The study results show that the ineffective anchoring depth was less affected by the total anchoring depth. The increase of total anchoring depth will induce a small fluctuating range of ineffective anchoring depth. Moreover,the ineffective anchorage depth of elastic hemi-slope anti-slide pile had an exponential positive correlation with the inclination angle of slip surface and landslide thrust that with the increase of the inclination angle of sliding surface and the thrust of landslide,the ineffective anchorage depth also increased.
引文
[1]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.The second survey design institute of railways ministry. Anti-slide pile design and calculation[M].Beijing:China Railway Press,1983.
[2]王恭先.滑坡支挡建筑物的发展动向[C]//滑坡文集(第十三集).北京:中国铁道出版社,1998:60-64.WANG Gongxian. The development trend of the landslide retaining structures[C]//Landslide corpus(Article 13 sets). Beijing:China Railway Press,1998:60-64.
[3]TSCHEBOTARIOF G P. Foundations,retaining,and earth structures[M]. New York:McGraw-Hill,1973.
[4]POULOS H G. Analysis of piles in soil undergoing lateral movement[J]. Jsmfd. Asce, 1973, 99(SM5):391-406.
[5]欧明喜. h型抗滑桩力学机理及其工程应用研究[D].重庆:重庆大学,2012.OU Mingxi. The study on mechanical mechanism of htype anti-slide piles and its engineering applications[D]. Chongqing:Chongqing University,2012.
[6]柳治国. ANSYS在h形抗滑桩设计中的应用[J].公路工程,2013,38(3):144-147.LIU Zhiguo. Application of ANSYS on the design of h form anti-slide pile[J]. Highway Engineering,2013,38(3):144-147.
[7]周翠英,刘祚秋,尚伟,等.门架式双排抗滑桩设计计算新模式[J].岩土力学,2005,26(3):441-445.ZHOU Cuiying,LIU Zuoqiu,SHANG Wei,et al. A new mode for calculation of portal double row antisliding piles[J]. Soil and Rock Mechanics,2005,26(3):441-445.
[8]钱同辉,唐辉明.双排门式抗滑桩的空间计算模型[J].岩土力学,2009,30(4):1137-1141.QIAN Tonghui,TANG Huiming. Spatial calculation model for portal double row anti-slide piles[J]. Rock and Soil Mechanics,2009,30(4):1137-1141.
[9]钱同辉,唐辉明,夏文才,等.框架式抗滑桩的模型试验研究[J].华中科技大学学报:自然科学版,2011,39(12):119-122.QIAN Tonghui,TANG Huiming,XIA Wencai,et al.Model tests of framed anti-sliding piles[J]. Journal Huazhong University of Science and Technology:Natural Science Edition,2011,39(12):119-122.
[10]赵法锁,罗丽娟,王雷.基于性能的拱形抗滑桩墙支护结构体系优化设计的思考[J].工程地质学报,2007,15(4):539-544.ZHAO Fasuo,LUO Lijuan,WANG Lei. Optimization design of arch anti-slide pile wall supporting structure system based on performance[J]. Journal of Engineering Geology,2007,15(4):539-544.
[11]王辉.拱形抗滑桩墙结构体系工作性能试验研究[D].西安:长安大学,2011.WANG Hui. Experimental study on the performance of the arch anti-slide pile-wall supporting structure system[D]. Xi’an:Chang’an University,2011.
[12]戴自航.抗滑桩滑坡推力和桩前滑体抗力分布规律的研究[J].岩石力学与工程学报,2002,21(4):517-521.DAI Zihang. Study on distribution laws of landslide thrust and resistance of sliding mass acting on antislide piles[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(4):517-521.
[13]杨涛,周德培,张俊云,等.抗滑桩滑坡推力分布形式的计算确定[J].岩土工程学报,2006,28(3):322-326.YANG Tao,ZHOU Depei,ZHANG Junyun,et al.Distribution of land-slide thrust on anti-slide piles[J]. China Journal of Geotechnical Engineering,2006,28(3):322-326.
[14]LIN San-Shyan,LIAO Jen-Cheng. Lateral response evaluation of single piles using inclinometer data[J].Journal of Geotechnical and Geoenviromental Engineering,2006,132(12):1566-1573.
[15]张友良,冯夏庭,范建海,等.抗滑桩与滑坡体相互作用的研究[J].岩石力学与工程学报,2002,21(6):839-842.ZHANG Youliang,FENG Xiating,FAN Jianhai,et al. Study on the interaction between landslide and passive piles[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(6):839-842.
[16]黄诚,任伟中.抗滑桩与滑坡相互作用分析的常微分方程组边值法[J].计算力学学报,2012,29(3):421-426.HUANG Cheng, REN Weizhong. Boundary value method of ordinary differential equation system for analyzing interaction between landslide and stabilizing pile[J]. Chinese Journal of Computational Mechanics,2012,29(3):421-426.
[17]KODIKARA J,HAQUE A,LEE K Y. Theoretical py curves for laterally loaded single piles in undrained clay using Bezier curves[J]. Journal of Geotechnical and Geoenvironmental Engineering,2010,136(1):265-268.
[18]周春梅,殷坤龙.双参数法在抗滑桩设计中的运用[J].武汉理工大学学报,2004,26(10):35-37.ZHOU Chunmei,YIN Kunlong. The application of double parameter method in the design of anti-sliding pile[J]. Journal of Wuhan University of Technology,2004,26(10):35-37.
[19]任永忠,朱彦鹏,李海军.考虑桩土相互作用的“品”字型抗滑桩计算方法[J].四川大学学报:工程科学版,2015,47(3):29-36.REN Yongzhong, ZHU Yanpeng, LI Haijun.Calculation method of the three piles of facing each other in consideration of the pile-soil interaction[J].Journal of Sichuan University:Engineering Science Edition,2015,47(3):29-36.
[20]王桢.对“半坡桩”有关问题的分析和处理办法[C].中国科协第五届青年学术年会论文集:2004.WANG Zhen. Analyze and handle method of the hemi-slope pile relevant issues[C]. The fifth youth academic essays of China association for science and technology:2004.
[21]叶鹏.半坡桩锚固深度的研究[D].成都:西南交通大学,2009.YE Peng. Study on anchoring depth of the hemi-slope pile[D]. Chengdu:Southwest Jiaotong University,2009.
[22]倪悦.半坡抗滑桩受力特性分析[D].重庆:重庆交通大学,2013.NI Yue. Study on stress analysis of the hemi-slope pile[D]. Chongqing:Chongqing Jiaotong University,2013.
[23]曹兴松.碎裂岩体路堑高边坡失稳机理及防治技术研究[D].成都:西南交通大学,2006.CAO Xingsong. Research on instability mechanism and controlling techniques for cutting high slope in disintegration rock mass[D]. Chengdu:Southwest Jiaotong University,2006.
[2]王恭先.滑坡支挡建筑物的发展动向[C]//滑坡文集(第十三集).北京:中国铁道出版社,1998:60-64.WANG Gongxian. The development trend of the landslide retaining structures[C]//Landslide corpus(Article 13 sets). Beijing:China Railway Press,1998:60-64.
[3]TSCHEBOTARIOF G P. Foundations,retaining,and earth structures[M]. New York:McGraw-Hill,1973.
[4]POULOS H G. Analysis of piles in soil undergoing lateral movement[J]. Jsmfd. Asce, 1973, 99(SM5):391-406.
[5]欧明喜. h型抗滑桩力学机理及其工程应用研究[D].重庆:重庆大学,2012.OU Mingxi. The study on mechanical mechanism of htype anti-slide piles and its engineering applications[D]. Chongqing:Chongqing University,2012.
[6]柳治国. ANSYS在h形抗滑桩设计中的应用[J].公路工程,2013,38(3):144-147.LIU Zhiguo. Application of ANSYS on the design of h form anti-slide pile[J]. Highway Engineering,2013,38(3):144-147.
[7]周翠英,刘祚秋,尚伟,等.门架式双排抗滑桩设计计算新模式[J].岩土力学,2005,26(3):441-445.ZHOU Cuiying,LIU Zuoqiu,SHANG Wei,et al. A new mode for calculation of portal double row antisliding piles[J]. Soil and Rock Mechanics,2005,26(3):441-445.
[8]钱同辉,唐辉明.双排门式抗滑桩的空间计算模型[J].岩土力学,2009,30(4):1137-1141.QIAN Tonghui,TANG Huiming. Spatial calculation model for portal double row anti-slide piles[J]. Rock and Soil Mechanics,2009,30(4):1137-1141.
[9]钱同辉,唐辉明,夏文才,等.框架式抗滑桩的模型试验研究[J].华中科技大学学报:自然科学版,2011,39(12):119-122.QIAN Tonghui,TANG Huiming,XIA Wencai,et al.Model tests of framed anti-sliding piles[J]. Journal Huazhong University of Science and Technology:Natural Science Edition,2011,39(12):119-122.
[10]赵法锁,罗丽娟,王雷.基于性能的拱形抗滑桩墙支护结构体系优化设计的思考[J].工程地质学报,2007,15(4):539-544.ZHAO Fasuo,LUO Lijuan,WANG Lei. Optimization design of arch anti-slide pile wall supporting structure system based on performance[J]. Journal of Engineering Geology,2007,15(4):539-544.
[11]王辉.拱形抗滑桩墙结构体系工作性能试验研究[D].西安:长安大学,2011.WANG Hui. Experimental study on the performance of the arch anti-slide pile-wall supporting structure system[D]. Xi’an:Chang’an University,2011.
[12]戴自航.抗滑桩滑坡推力和桩前滑体抗力分布规律的研究[J].岩石力学与工程学报,2002,21(4):517-521.DAI Zihang. Study on distribution laws of landslide thrust and resistance of sliding mass acting on antislide piles[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(4):517-521.
[13]杨涛,周德培,张俊云,等.抗滑桩滑坡推力分布形式的计算确定[J].岩土工程学报,2006,28(3):322-326.YANG Tao,ZHOU Depei,ZHANG Junyun,et al.Distribution of land-slide thrust on anti-slide piles[J]. China Journal of Geotechnical Engineering,2006,28(3):322-326.
[14]LIN San-Shyan,LIAO Jen-Cheng. Lateral response evaluation of single piles using inclinometer data[J].Journal of Geotechnical and Geoenviromental Engineering,2006,132(12):1566-1573.
[15]张友良,冯夏庭,范建海,等.抗滑桩与滑坡体相互作用的研究[J].岩石力学与工程学报,2002,21(6):839-842.ZHANG Youliang,FENG Xiating,FAN Jianhai,et al. Study on the interaction between landslide and passive piles[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(6):839-842.
[16]黄诚,任伟中.抗滑桩与滑坡相互作用分析的常微分方程组边值法[J].计算力学学报,2012,29(3):421-426.HUANG Cheng, REN Weizhong. Boundary value method of ordinary differential equation system for analyzing interaction between landslide and stabilizing pile[J]. Chinese Journal of Computational Mechanics,2012,29(3):421-426.
[17]KODIKARA J,HAQUE A,LEE K Y. Theoretical py curves for laterally loaded single piles in undrained clay using Bezier curves[J]. Journal of Geotechnical and Geoenvironmental Engineering,2010,136(1):265-268.
[18]周春梅,殷坤龙.双参数法在抗滑桩设计中的运用[J].武汉理工大学学报,2004,26(10):35-37.ZHOU Chunmei,YIN Kunlong. The application of double parameter method in the design of anti-sliding pile[J]. Journal of Wuhan University of Technology,2004,26(10):35-37.
[19]任永忠,朱彦鹏,李海军.考虑桩土相互作用的“品”字型抗滑桩计算方法[J].四川大学学报:工程科学版,2015,47(3):29-36.REN Yongzhong, ZHU Yanpeng, LI Haijun.Calculation method of the three piles of facing each other in consideration of the pile-soil interaction[J].Journal of Sichuan University:Engineering Science Edition,2015,47(3):29-36.
[20]王桢.对“半坡桩”有关问题的分析和处理办法[C].中国科协第五届青年学术年会论文集:2004.WANG Zhen. Analyze and handle method of the hemi-slope pile relevant issues[C]. The fifth youth academic essays of China association for science and technology:2004.
[21]叶鹏.半坡桩锚固深度的研究[D].成都:西南交通大学,2009.YE Peng. Study on anchoring depth of the hemi-slope pile[D]. Chengdu:Southwest Jiaotong University,2009.
[22]倪悦.半坡抗滑桩受力特性分析[D].重庆:重庆交通大学,2013.NI Yue. Study on stress analysis of the hemi-slope pile[D]. Chongqing:Chongqing Jiaotong University,2013.
[23]曹兴松.碎裂岩体路堑高边坡失稳机理及防治技术研究[D].成都:西南交通大学,2006.CAO Xingsong. Research on instability mechanism and controlling techniques for cutting high slope in disintegration rock mass[D]. Chengdu:Southwest Jiaotong University,2006.