高速列车荷载下桩承加筋路堤变形机制数值分析

李西斌; 吴金耀

高速列车荷载下桩承加筋路堤变形机制数值分析 English Version

李西斌¹,
吴金耀²

1.浙江农林大学土木工程系,浙江杭州 311300 ； 2. 福州大学土木工程学院,福建福州 350108

基金项目: 浙江农林大学科研启动基金项目( 2010FR043)

详细信息

作者简介:
李西斌 (1977 – ) ,男,山东冠县人,博士,副教授,主要从事软土固结理论、路基处理等方面的研究与教学工作。

中图分类号: U416.1
计量
- 文章访问数: 01257
- HTML全文浏览量: 0
- PDF下载量: 0604
出版历程
- 收稿日期: 2011-08-01
- 发布日期: 2011-12-06

Deformation mechanism of geosynthetic reinforced pile supported embankment under high-speed train loads

LI Xi-bin¹,
WU Jin-yao²

1. Civil Engineering Department, Zhejiang A & F University, Hangzhou 311300, China; 2. School of Civil Engineering, Fuzhou University, Fuzhou 350108, China

摘要

摘要: 桩承加筋路堤是近来发展起来的软土地基处理技术,具有用桩数量少,节约工程成本,加快工程进度的优点。采用有限元方法研究了高速列车荷载下桩承加筋路堤的变形规律,分析了软土的变形模量、桩弹性模量、格栅弹性模量和桩间距对路堤各部分沉降以及最大侧向位移的影响。分析结果表明,上述四个因素对桩顶沉降、填土顶面沉降、桩间土沉降、路堤最大侧向位移都有一定的影响。
- 桩承式加筋路堤 /
- 高速列车荷载 /
- ABAQUS /
- 复合地基 /
- 位移
Abstract: The geosynthetic reinforced pile supported embankment is a new ground treatment technology developed in recent years. The advantages of this technology include reduction of number of piles, decrease of project costs and increase of construction speed. Finite element method is used to analyze the deformations in geosynthetic reinforced pile supported embankments under high-speed train loads. The influences of soft soil deformation modulus, elastic modulus of piles, elastic modulus of geogrid and the space between piles on the settlement of each part of the embankment and the maximum lateral displacement of the embankment are investigated. The results show that the four factors have effects on the pile settlement, the surface settlement of the filling soil, the displacement of the soil between piles and the maximum lateral displacement of the embankment.
- geosynthetic reinforced pile supported embankment /
- high-speed train load /
- ABAQUS /
- composite foundation displacement /
- undefined

HTML全文

参考文献(11)

[1]	TB10020 ─ 2009 高速铁路设计规范（试行） [S]. 北京 : 中国铁道出版社 , 2009. (TB10020-2009 Code for design of high speed railway[S]. Beijing: China Railway Press, 2009. (in Chinese))
[2]	贾宁 , 陈仁朋 , 陈云敏 , 等 . 杭甬高速公路拓宽工程理论分析及监测 [J]. 岩土工程学报 , 2004, 26 (6): 755 – 760. (JIA Ning, CHEN Ren-peng, CHEN Yun-min, et al. Theoretical analysis and measurement for widening project of Hangzhou-Ningbo Expressway[J]. Chinese Journal of Geotechnical Engineering, 2004, 26 (6): 755 – 760. (in Chinese))
[3]	谢新宇 , 刘开富 , 张清华 , 等 . 温州粮库水泥搅拌桩联合加筋垫层复合地基性状分析 . 岩土工程学报 , 2005, 27 (12): 1468 – 1471. (XIE Xin-yu, LIU Kai-fu, ZHANG Qing-hua, et al. Properties of composite foundation of deep mixing cement piles and geotextile-reinforced cushion at Wenzhou Grain Depot[J]. Chinese Journal of Geotechnical Engineering, 2005, 27 (12): 1468 – 1471. (in Chinese))
[4]	ALMEIDA M S S, EHRLICH M, SPOTTI A P, et al. Embankment supported on piles with biaxial geogrids[C]// Proceedings of the Institution of Civil Engineers, Geotechnical Engineering 160, 2007, Issue GE4: 185 – 192.
[5]	JONES C J F P, LAWSON C R, AYRES D J. Geotextile reinforced piled embankments[C]// HOEDT(ed), Proc 4th Int Conf on Geotextiles: Geomembranes and Related Products, DEN 1990, Rotterdam: Balkema, 155 – 160.
[6]	HAN J, GABR M A. Numerical analysis of Geosynthetic- reinforced and pile-supported earth platforms over soft soil[J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE. 2002, 128 (1): 44 – 53.
[7]	HEWLETT W J, RANDOLPH M F. Analysis of Piled embankments[J]. Ground Engineering, 1998, 21 (3): 12 – 18.
[8]	LI Jun-shi, LI Ke-chuan. Finite element analysis for dynamic response of roadbed of highspeed railway[J]. Journal of The China Railway Society, 1995, 17 (1): 66 – 75. (in Chinese))
[9]	丁铭绩 , 王连俊 , 高速铁路软土复合地基路基的位移数值计算分析 . 铁道勘察 , 2007(3): 17 – 20. (DING Ming-ji, WANG Lian-jun. Analysis on settlement numerical calculation for soft composite foundation and embankment of high speed railway. Railway Investigation and Surveying, 2007(3): 17 – 20. (in Chinese))
[10]	饶为国 , 赵成刚 . 桩–网复合地基应力比分析与计算 . 土木工程学报 , 2002, 35 (2): 74 – 80. (RAO Wei-guo, ZHAO Cheng-gang. The behavior of pile-net composite foundation[J]. China Civil Engineering Journal, 2002, 35 (2): 74 – 80. (in Chinese))
[11]	饶为国 , 江辉煌 , 侯庆华 . 桩–网复合地基工后沉降的薄板理论解 . 水利学报 , 2002(4): 23 – 27. (RAO Wei-guo, JIANG Hui-huang, HOU Qing-hua. Deformation of sheet plate due to residual settlement of pile2net composite foundation[J]. Journal of Hydraulic Engineering, 2002(4): 23 – 27. (in Chinese))