[1]刘朝晖,王鑫.桩承式低填路堤土拱效应的数值模拟[J].深圳大学学报理工版,2014,31(5):529-536.[doi:10.3724/SP.J.1249.2014.05529]
 Liu Zhaohui and Wang Xin.Numerical simulation on soil arching effect of piled low embankment[J].Journal of Shenzhen University Science and Engineering,2014,31(5):529-536.[doi:10.3724/SP.J.1249.2014.05529]
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桩承式低填路堤土拱效应的数值模拟()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第31卷
期数:
2014年第5期
页码:
529-536
栏目:
土木建筑工程
出版日期:
2014-09-20

文章信息/Info

Title:
Numerical simulation on soil arching effect of piled low embankment
文章编号:
201405013
作者:
刘朝晖1王鑫2
1)湖北科技学院资源环境科学与工程学院,湖北咸宁 437000
2)武汉大学土木建筑工程学院,武汉 430072
Author(s):
Liu Zhaohui1 and Wang Xin2
1) College of Resources and Environment Science and Engineering, Hubei University of Science and Technology, Xianning 437000, Hubei Province, P.R.China
2) School of Civil Engineering, Wuhan University, Wuhan 430072, P. R. China
关键词:
路基工程低填路堤土拱效应填土高度桩土应力比扩大头直径
Keywords:
subgrade engineering low embankment soil arching effect fill height pile-soil stress ratio pile head diameter
分类号:
TU 472.3
DOI:
10.3724/SP.J.1249.2014.05529
文献标志码:
A
摘要:
利用数值模拟试验研究低填路堤下土拱效应的特性. 通过建立三维土拱模型,研究影响土拱效应的主要参数——桩布置形式、桩间距、填土高度和扩大头直径间的相互关系. 结果表明,无论是三角形还是正方形布置形式,钉形桩的应力分布具有显著的空间对称性;在布置形式、填土高度和桩间距等参数一定的条件下,随着钉形桩扩大头直径的增加,土拱效应发挥程度降低,当扩大头较大,相邻两桩桩边缘较近时,群桩的挤土作用较明显;在正方形桩体布置形式下,填土路堤中应力分布较均匀,挤土作用下的土拱形态对称性比三角形布置形态要好,但桩土应力比却并不一定比三角形的大. 在设计中需要综合考虑填土高度、扩大头直径以及桩的布置形式等因素.
Abstract:
To study the characteristics of soil arching effect on piled low embankment, a three dimensional soil arch model is conducted to analyze the key parameters influencing soil arching. The results show that pile stress distribution of T-shape column has the characteristics of significant spatial symmetry. For a given condition of pile configuration, soil filling depth and pile spacing, the soil arching effect becomes less moblized as the diameter of pile head of Nail-shape pile increases; whereas if the pile head diameter is large and the adjacent piles are close, the squeezing effect of pile group becomes more significant. Under the arrangement of the square piles, the distribution of stress in the embankment is uniform. The symmetry of soil arching form under soil compaction effect is better than the one of triangle layout, but the pile-soil stress ratio is not necessarily larger than that of the triangle layout. Therefore, it is necessary to comprehensively consider the filling height, the pile head diameter and layout form.

参考文献/References:

[1] Jia Haili, Wang Chenghua, Li Jianghong. Discussion on some issues in theory of soil arch[J]. Journal of Southwest Jiaotong University,2003,38(4): 398-402.(in Chinese)
贾海莉,王成华,李江洪. 关于土拱效应的几个问题[J]. 西南交通大学学报,2003,38(4): 398-402.
[2] 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)
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.
[3] Xia Yuanyou, Rui Rui. Experimental analysis of vertical soil arching effect of embankment reinforced by rigid piles[J].Chinese Journal of Geotechnical Engineering,2006,28(3):327-331.(in Chinese)
夏元友,芮瑞.刚性桩加固软土路堤竖向土拱效应的试验研究[J].岩土工程学报,2006,28(3):327-331.
[4] 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)
陈福泉,李阿池,吕艳萍. 桩承式路堤土拱效应的改进Hewlett算法[J]. 岩石力学与工程学报,2007,26(6):1278-1283.
[5] Cao Weiping. Study on soil arching and performance-based design method for piled reinforced embankments[D].Hangzhou:Zhejiang University, 2007.(in Chinese)
曹卫平. 桩承式路堤土拱效应及基于性能的设计方法研究[D]. 杭州:浙江大学, 2007.
[6] 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)
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.
[7] Cao Weiping, Chen Yunmin, Chen Renpeng. Analysis of soil arching in piled embankments considering coupled effect of embankment filling and soil consolidation[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(8): 1610-1616.(in Chinese)
曹卫平,陈云敏,陈仁朋.考虑路堤填筑过程与地基土固结相耦合的桩承式路堤土拱效应分析[J]. 岩石力学与工程学报,2008,27(8): 1610-1616.
[8] 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.(in Chinese)
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.
[9] Qiang Xiaojun, Zhao Youming, Hu Ronghua. Improved algorithm for the soil arching effect of pile-net supported embankment[J]. China Railway Science,2009,30(4): 7-12.(in Chinese)
强小俊,赵有明,胡荣华. 桩网结构支承路堤土拱效应改进算法[J]. 中国铁道科学,2009,30(4): 7-12.
[10] Yu Chuang, Liu Songyu, Du Guangyin. A modified Terzaghi’s method on soil arching in piled embankments[J]. Hydrogeology and Engineering Geology,2010,37(4): 74-76.(in Chinese)
余闯,刘松玉,杜广印. 桩承式路堤土拱效应的改进Terzaghi方法[J]. 水文地质工程地质,2010,37(4): 74-76.
[11] Fei Kang,Wang Junjun,Chen Yi. Experimental and numerical studies of soil arching in piled embankment[J]. Rock and Soil Mechanics,2011,32(7): 1975-1983.(in Chinese)
费康,王军军,陈 毅. 桩承式路堤土拱效应的试验和数值研究[J]. 岩土力学, 2011,32(7): 1975-1983.
[12] Li Bo, Huang Maosong, Ye Guanbao. Analysis of three-dimensional soil arching effect of pile-supported embankment with geosynthetics and its test verification[J].China Journal of Highway and Transport,2012,25(1): 13-20.(in Chinese)
李波,黄茂松,叶观宝. 加筋桩承式路堤的三维土拱效应分析与试验验证[J]. 中国公路学报,2012,25(1): 13-20.
[13] Fei Kang, Wang Junjun, Chen Yi. A three dimensional simplified method for analysis of soil arching effect in the pile-supported embankments[J]. Journal of Civil, Architectural and Environmental Engineering, 2012,34(5): 77-83.(in Chinese)
费康,王军军,陈毅. 桩承式路堤土拱效应三维分析[J]. 土木建筑与环境工程,2012,34(5): 77-83.
[14] Zou Shuguo.The research on applicability of low filled embankment expressway scheme[D]. Shanghai:Tongji University,2008.(in Chinese)
邹淑国. 高速公路低路堤方案适用性研究[D]. 上海: 同济大学, 2008.
[15] Cai Zhi. Analysis on numerical simulation for bearing capacity of single T-shaped mixing pile[J]. Urban Road and Bridge and Flood Control,2010,26(8): 147-149.(in Chinese)
蔡志. 钉形搅拌桩单桩承载力的数值模拟分析[J]. 城市道桥与防洪,2010,26(8): 147-149.
[16] Wachman G S, Biolzi L J, Labuz F. Structural behavior of a pile-supported embankment[J]. Journal of Geotechnical and Geoenvironmental Engineering,2010,136(1): 26-34.
[17] He Lihong,Li Yan,Zhang Nina. Discussion of pile strength testing methods and causes analysis of strength difference of T-shaped bidirectional deep mixing column[J]. Rock and Soil Mechanics,2010,s1: 255-260.(in Chinese)
和礼红,李艳,张妮娜,等. 钉形水泥土双向搅拌桩桩身强度差异原因分析与检测探讨[J]. 岩土力学,2010,s1: 255-260.
[18] Chen Renpeng, Jia Ning, Chen Yunmin. Mechanism and settlement analysis of pile-supported and geodrid-reinforced embankments[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(23):4358-4367.(in Chinese)
陈仁朋,贾宁,陈云敏. 桩承式加筋路堤受力机制及沉降分析[J]. 岩石力学与工程学报,2005,24(23):4358-4367.
[19] Zhuang Y, Ellis E A, Yu H S. The effect of subsoil support in plane strain finite element analysis of arching in a piled embankment[C]// The 12th International Conference of International Association for Computer Methods and Advances in Geomechanics. New Delhi(India): International Association for Computer Methods and Advances in Geomechanics,2008: 4748-4756.

备注/Memo

备注/Memo:
Received:2014-05-04;Accepted:2014-07-24
Foundation:Natural Science Foundation of Hubei Province(2012FFC01401)
Corresponding author:Lecturer Liu Zhaohui. E-mail: gsesa@sina.com
Citation:Liu Zhaohui, Wang Xin. Numerical simulation on soil arching effect of piled low embankment[J]. Journal of Shenzhen University Science and Engineering, 2014, 31(5): 529-536.(in Chinese)
基金项目:湖北省自然科学基金资助项目( 2012FFC01401)
作者简介:刘朝晖(1975—),男(汉族),湖北省咸宁市人,湖北科技学院讲师. E-mail: gsesa@sina.com
引文:刘朝晖,王鑫.桩承式低填路堤土拱效应的数值模拟[J]. 深圳大学学报理工版,2014,31(5):529-536.
更新日期/Last Update: 2014-09-11