[1]余闯,刘松玉,杜广印,等.桩承式路堤土拱效应的三维数值模拟[J].东南大学学报(自然科学版),2009,39(1):58-62.[doi:10.3969/j.issn.1001-0505.2009.01.011]
 Yu Chuang,Liu Songyu,Du Guangyin,et al.Three dimensional simulations on soil arching of piled embankments[J].Journal of Southeast University (Natural Science Edition),2009,39(1):58-62.[doi:10.3969/j.issn.1001-0505.2009.01.011]
点击复制

桩承式路堤土拱效应的三维数值模拟()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第1期
页码:
58-62
栏目:
土木工程
出版日期:
2009-01-20

文章信息/Info

Title:
Three dimensional simulations on soil arching of piled embankments
作者:
余闯12 刘松玉2 杜广印2 杨昭宇1 吴荷君1
1 温州大学建筑与土木工程学院, 温州 325035; 2 东南大学岩土工程研究所, 南京 210096
Author(s):
Yu Chuang12 Liu Songyu2 Du Guangyin2 Yang Zhaoyu1 Wu Hejun1
1 College of Architecture and Civil Engineering, Wenzhou University, Wenzhou 325035, China
2 Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China
关键词:
桩承式路堤 土拱效应 三维数值计算 竖向应力
Keywords:
piled embankments soil arching effect three dimensional simulations vertical stress
分类号:
TU472.3
DOI:
10.3969/j.issn.1001-0505.2009.01.011
摘要:
结合模型试验结果,建立了三维有限元数值模型,对桩承式路堤中土体竖向应力分布规律进行了分析,计算结果和实测结果具有很好的一致性,而且反映出了土体竖向应力随深度的分布规律、土拱作用机理以及土拱的作用范围.模型试验和计算结果显示: 桩承式路堤中土拱内部竖向应力随深度非线性减小,而土拱上部路堤中土体应力随深度近似线性增加.研究还发现,随着荷载水平和桩体-桩间土沉降差的变化,土拱的发生区域也在变化,实际土拱作用的影响范围在路堤底面以上约1倍桩间距的区域,要大于目前理论解答所做的假设.
Abstract:
Based on the model test, a three-dimensional numerical model has been established to simulate the behavior of piled embankments. The simulated results show good agreements with measured data. The presented results demonstrate that the vertical stress in the inner arching decreases with depth non-linearly and reaches the minimum value at the bottom of embankment. Nevertheless, the influenced height of soil aching depends on stress level and differential settlements between pile and soil. The soil aching area is located around one time pile spacing over the bottom of embankment. The results on soil arching influenced area obtained from this paper are bigger than the previous research.

参考文献/References:

[1] 刘松玉.公路地基处理[M].南京:东南大学出版社,2000.
[2] 张留俊,王福胜,刘建都.高速公路软土路基处理技术[M].北京:人民交通出版社,1998.
[3] 陈仁朋,徐正中,陈云敏.桩承式加筋路堤关键问题研究[J].中国公路学报,2007,20(2):7-12.
  Chen Renpeng,Xu Zhengzhong,Chen Yunmin.Research on key problems of pile-supported reinforced embankment [J].China Journal of Highway and Transport,2007,20(2):7-12.(in Chinese)
[4] 余闯.路堤荷载下刚性桩复合地基理论与应用研究[D].南京:东南大学交通学院,2006.
[5] Liu H L,Ng Charles W W,Fei K.Performance of a geogrid-reinforced and pile-supported highway embankment over soft clay:case study[J].Journal of Geotechnical and Geoenvironmental Engineering,2007,133(12):1483-1493.
[6] Terzaghi K. Theoretical soil mechanics[M].New York:John Wiley & Sons,1943.
[7] 曹卫平,陈仁朋,陈云敏.桩承式加筋路堤土拱效应试验研究[J].岩土工程学报,2007,29(3):436-441.
  Cao Weiping,Chen Renpeng,Chen Yunmin.Experimental investigation on soil arching in piled reinforced embankments[J].Chinese Journal of Geotechnical Engineering,2007,29(3):436-441.(in Chinese)
[8] Chen Yunmin,Cao Weiping,Chen Renpeng.An experimental investigation of soil arching within basal reinforced and unreinforced piled embankments[J]. Geotextiles and Geomembranes,2008,26(2):164-174.
[9] Jones C J F P,Lawson C R,Ayres D J.Geotextile reinforced piled embankments[C] //Proc 4th Int Conf on Geotextiles:Geomembranes and Related Products.Rotterdam:Balkema,1990:155-160.
[10] Han J,Akins K.Use of geogrid-reinforced and pile-supported earth structures[C] //Proceedings of International Deep Foundation Congress,ASCE.Orlando,USA,2002:668-679.
[11] Low B K,Tang S K,Choa V.Arching in piled embankments [J].Journal of Geotechnical and Geoenvironmental Engineering,1994,120(11):1917-1938.
[12] Hewlett W J,Randolph M F.Analysis of piled embankments [J].Ground Engineering,1988,21(3):12-18.
[13] 陈云敏,贾宁,陈仁朋.桩承式路堤土拱效应分析[J].中国公路学报,2004,17(4):1-6.
  Chen Yunmin,Jia Ning,Chen Renpeng.Soil arch analysis of pile-supported embankments[J].China Journal of Highway and Transport,2004,17(4):1-6.(in Chinese)
[14] 陈福全,李阿池,吕艳平.桩承式路堤中土拱效应的改进Hewlett 算法[J].岩石力学与工程学报,2007,26(6):1278-1283.
  Chen Fuquan,Li Achi,Lu Yanping.An improved solution of hewlett’s method for soil arching effect on piled embankments[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(6):1278-1283.(in Chinese)
[15] Han J,Gabr M A.A numerical study of load transfer mechanisms in geosynthetic reinforced and pile supported embankments over soft soil[J]. Journal of Geotechnical and Geoenvironmental Engineering,2002,128(1):44-53.
[16] 李海芳.路堤荷载下复合地基沉降计算方法研究[D].杭州:浙江大学建工学院,2004.
[17] Kempton G,Russell D,Pierpoint N,et al.Two and three-dimensional numerical analysis of the performance of piled embankments[C] //The 6th International Conference on Geosynthetics.Atlanta,USA,1998:767-772.
[18] Zaeske D.Zur Wirkungsweise von unbewehrten und bewerten mineralischen Trag-schichten über pfahlartigen Grün-dungselementen[D].Universität Kassel,Beiträge aus der Umweltgeotechnik,2001.
[19] BSI.Code of practice for strengthened/reinforced soils and other fills[S].Landon:British Standard Institution,1995.
[20] Collin J G.Column supported embankment design considerations[C] //Proceedings of the 52nd Annual Geotechnical Engineering Conference.Minneapolis,Minnesota,USA,2004:51-78.
[21] Kempfert H G,Stadel M,Zaeske D.Design of geosynthetic-reinforced bearing layers over piles[J].Bautechnik,1997,74(12):818-825.

相似文献/References:

[1]朱小军,龚维明,赵学亮,等.垫层土拱效应试验与计算方法[J].东南大学学报(自然科学版),2013,43(5):957.[doi:10.3969/j.issn.1001-0505.2013.05.010]
 Zhu Xiaojun,Gong Weiming,Zhao Xueliang,et al.Experiments and calculation methods of soil arching in cushion[J].Journal of Southeast University (Natural Science Edition),2013,43(1):957.[doi:10.3969/j.issn.1001-0505.2013.05.010]

备注/Memo

备注/Memo:
作者简介: 余闯(1977—),男,博士,讲师,geoyuchuang@hotmail.com.
基金项目: 住房和城乡建设部科技计划资助项目(2008-K2-11)、东南大学优秀博士学位论文基金资助项目(YBJJ0513).
引文格式: 余闯,刘松玉,杜广印,等.桩承式路堤土拱效应的三维数值模拟[J].东南大学学报:自然科学版,2009,39(1):58-62.
更新日期/Last Update: 2009-01-20