全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

柔性基础复合地基的荷载传递规律

, PP. 1-9

Keywords: 道路工程,复合地基,解析法,荷载传递规律,影响因素,柔性基础

Full-Text   Cite this paper   Add to My Lib

Abstract:

?引进“典型单元体”与“虚土桩”模型,将柔性基础-垫层-复合地基-下卧层土体视为上下部共同作用的系统,考虑桩土界面之间允许有相对滑移并假设同高度处桩间土沉降不等,改造了Alamgir型桩间土位移模式,得到了柔性基础下复合地基系统的弹性力学微分方程组及其解;通过工程实例验证并评估了该解析解的合理性与精度;最后基于标准算例,通过所得解析解对系统的等沉面高度、中性点位置、桩身轴向应力、桩土应力比等展开了研究。结果表明:该解析解能较准确地反映柔性基础下复合地基的工作性状,沉降计算精度较复合模量法高;系统各因素对荷载传递规律都有不同程度的影响,必须重视系统上下部共同作用的深入研究。

References

[1]  龚晓南.广义复合地基理论及工程应用[J].岩土工程学报,2007,29(1):1-13.
[2]  郑 伟.柔性基础下复合地基荷载传递机理及变形特性研究[D].杭州:浙江大学,2006.
[3]  刘 超.柔性基础下复合地基的工作形状分析[D].杭州:浙江大学,2008.
[4]  ALAMGIR M,MIURA N,POOROOSHASB H B,et al.Deformation Analysis of Soft Ground Reinforced by Columnar Inclusions[J].Computers and Geotechnics,1996,18(4):267-290.
[5]  YANG Tao.Settlement Analysis of Composite Ground Improved by Flexible Floating Piles Under Road Embankment[J].Chinese Journal of Geotech-nical Engineering,2000,22(6):741-743.
[6]  LIU Jie,ZHANG Ke-neng.Load Transfer Law and Deformation Calculating of the Composite Foundation[J].China Journal of Highway and Transport,2004,17(1):20-23.
[7]  LI Hai-fang,WEN Xiao-gui,GONG Xiao-nan.An-alytical-function for Compressive Deformation of Sta-bilized Layer in Composite Foundation Under Load of Embankment[J].China Civil Engineering Journal,2005,38(3):77-80.
[8]  陈仁朋,许 峰,陈云敏,等.软土地基上刚性桩-路堤共同作用分析[J].中国公路学报,2005,18(3):7-13.
[9]  YU C,LIU S Y,JI T Y.Study on the Performance of the Reinforced Piled Embankment[C]//HAN J,YIN J H,WHITE D J,et al.Advances in Earth Structure-Research to Practice (GSP 151).Shanghai:ASCE,2006:247-254.
[10]  RAITHEL M,KIRCHNER A,SCHADE C,et al.Foundation of Constructions on Very Soft Soils with Geotextile Encased Columns-State of the Art[C]//SCHAEFER V R,BRUCE D A, BYLE M J.Innov-ations in Grouting and Soil Improvement (GSP 136).Austin:ASCE,2005:1-11.
[11]  YI Wei-jian,YANG Sui-xin.Soil-structure Dynamic Interaction Based on Soft Soil Foundation[J].Journal of Architecture and Civil Engineering,2005,22(2):61-65.
[12]  YUE Peng-fei,SHEN Ai-qin,QI Xiu-lin.Calculating Theory of Settlement of Bridge Approach Embankment[J].Journal of Chang'an University:Natural Science Edition,2006,26(5):30-34.
[13]  GONG Xiao-nan.Generalized Composite Foundation Theory and Engineering Application[J].Chinese Journal of Geotechnical Engineering,2007,29(1):1-13.
[14]  ZHENG Wei.Study on Load Transfer Mechanism and Deformation Characteristics of Composite Ground Under Flexible Foundation[D].Hangzhou:Zhejiang University,2006.
[15]  LIU Chao.Analysis of Working Properties of Composite Ground Under Flexible Foundation[D].Hangzhou:Zhejiang University,2008.
[16]  杨 涛.路堤荷载下柔性悬桩复合地基的沉降分析[J].岩土工程学报,2000,22(6):741-743.
[17]  刘 杰,张可能.复合地基荷载传递规律及变形计算[J].中国公路学报,2004,17(1):20-23.
[18]  李海芳,温晓贵,龚晓南.路堤荷载下复合地基加固区压缩量的解析算法[J].土木工程学报,2005,38(3):77-80.
[19]  刘吉福.路堤下复合地基桩、土应力比分析[J].岩石力学与工程学报,2003,22(4):674-677.
[20]  LIU Ji-fu.Analysis on Pile-soil Stress Ratio for Composite Ground Under Embankment[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(4):674-677.
[21]  CHEN Ren-peng, XU Feng, CHEN Yun-min,et al. Analysis of Behavior of Rigid Pile-supported Embankment in Soft Ground[J].China Journal of Highway and Transport,2005,18(3):7-13.
[22]  MIKIL H,NOZU M.Design and Numerical Analysis of Road Embankment with Low Improvement Ratio Deep Mixing Method[C]//YEGIAN M K,KAVAZANJIAN E.Geotechnical Engineering for Transportation Projects (GSP 126).Los Angeles:ASCE,2004:1395-1402.
[23]  易伟建,杨随新.软土地基上的土-结构动力相互作用[J].建筑科学与工程学报,2005,22(2):61-65.
[24]  岳鹏飞,申爱琴,祁秀林.桥台背路基沉降理论计算[J].长安大学学报:自然科学版,2006,26(5):30-34.
[25]  尉学勇,王晓谋,贺培峰.斜坡地基极限承载力下限解计算[J].建筑科学与工程学报,2005,22(4):77-82.
[26]  YU Xue-yong,WANG Xiao-mou,HE Pei-feng.Calculation of Low Limit Solution of Sloping Ground Ultimate Load Capacity[J].Journal of Architecture and Civil Engineering,2005,22(4):77-82.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133