| 路堤荷载下Y形桩与常规桩型对比研究 |
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| 引用本文： | 王新泉,陈永辉,陈龙,齐昌广.路堤荷载下Y形桩与常规桩型对比研究[J].铁道工程学报,2011(11). |
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| 作者姓名： | 王新泉 陈永辉 陈龙 齐昌广 |
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| 作者单位： | 1. 浙江大学,杭州,310015
2. 河海大学,南京,210098 |
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| 摘 要： | 研究目的:利用ABAQUS有限元分析软件,建立Y形桩、圆形桩和方形桩三种桩型的有限元计算模型,桩采用弹性模型,土体采用Mohr -Coulomb弹塑性模型.在相同布桩方式和相同面积置换率工况下,研究在路堤荷载分级加载过程中,三种桩型的盖板顶沉降、桩间土沉降、盖板顶和桩间土差异沉降、盖板顶平均应力、桩底平均应力等的变化规律.研究结论:通过对比得知:在相同荷载作用下,圆形桩盖板顶产生的沉降最大,其次为方形桩、Y形桩；圆形桩桩间土产生的沉降最大,方形桩前期大于Y形桩,之后又小于Y形桩；盖板顶与桩间土差异沉降基本呈现圆形桩最大,其次为Y形桩、方形桩；盖板顶和桩底平均应力,呈现方形桩最大,其次为圆形桩、Y形桩.
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| 关 键 词： | Y形桩 常规桩型 路堤荷载 有限元分析 沉降 |
Comparative Study on Bearing Characteristics of Y - Section Pile and Common Piles under Embankment Load |
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| WANG Xin-quan,CHEN Yong-hui,CHEN Long,QI Chang-guang.Comparative Study on Bearing Characteristics of Y - Section Pile and Common Piles under Embankment Load[J].Journal of Railway Engineering Society,2011(11). |
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| Authors: | WANG Xin-quan CHEN Yong-hui CHEN Long QI Chang-guang |
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| Institution: | WANG Xin-quan1,CHEN Yong-hui2,CHEN Long2,QI Chang-guang2 (1.Zhejiang University,Hangzhou,Zhejiang 310015,China 2.Hohai University,Nanjing,Jiangsu 210098,China) |
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| Abstract: | Research purposes: Based on the ABAQUS finite element analysis software,three kinds of finite element calculation models for Y-Section Pile,square pile and circular pile were established.The elastic model was employed for the pile,while Mohr-Coulomb elastic-plastic model for the soil.Under the case with the same pile layout and area exchange rate,the variations of the total and different settlements of cover plate and soil among adjacent piles,pile-top and pile-end average stress were investigated in the pr... |
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| Keywords: | Y-Section Pile common piles embankment load finite element analysis settlement |
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