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...
工程力学  2013 

层状地基中基于虚土桩模型的单桩沉降计算方法

DOI: 10.6052/j.issn.1000-4750.2012.03.0171

Keywords: 单桩沉降,层状地基,虚土桩模型,荷载-沉降曲线,荷载传递法

Full-Text   Cite this paper   Add to My Lib

Abstract:

基于虚土桩模型及荷载传递法,针对理想弹塑性荷载传递函数,推导了均质地基中以桩侧土塑性发展深度为变量的桩顶荷载-沉降曲线计算方法,且进一步利用递推方法将其推广到层状地基中并给出了桩身轴力及桩侧摩阻力的计算方法。在此基础上,给出了荷载传递模型参数的选取方法并分析了虚土桩计算长度的影响因素及取值方法。然后,利用该算法分析了桩及虚土桩压缩模量对荷载-沉降曲线的影响。最后,结合工程实测数据,对比了计算荷载-沉降曲线、实测曲线和由规范方法得到的荷载-沉降曲线,结果表明:在一定的荷载范围内,采用基于虚土桩模型的单桩沉降计算方法计算得到的桩顶沉降值与实测值较为吻合,实际工程应用优于规范法。

References

[1]  Kraft L M,Ray P R,Kagawa T. Theoretical t-z curves [J]. Journal of the Geotechnical Engineering Division, 1981, 107(11): 1543―1561.
[2]  王旭东,魏道垛,宰金珉. 单桩荷载-沉降的非线性分析[J]. (南京建筑工程学院院报), 1994, 28(1): 15―23.Wang Xudong,Wei Daoduo,Zai Jinmin. Nonlinear analysis of load-settlement for single pile [J]. Journal of Nanjing Architectural and Civil Engineering Institute, 1994, 28(1): 15―23. (in Chinese)
[3]  刘齐建,杨林德. 桩基荷载传递函数扰动状态模型及应用[J]. (同济大学学报(自然科学版)), 2006, 34(2): 165―169.Liu Qijian,Yang Linde. New model of load transfer function for pile analysis based on disturbed state model [J]. Journal of Tongji University (Natural Science), 2006, 34(2): 165―169. (in Chinese)
[4]  王传文,梅国雄,宋林辉,宰金珉. 广义荷载传递函数及其应用[J]. (岩土力学), 2007, 28(6): 1217―1220.Wang Chuanwen,Mei Guoxiong,Song Linhui,Zai Jinmin. Generalized load transfer function and its application [J]. Rock and Soil Mechanics, 2007, 28(6): 1217―1220. (in Chinese)
[5]  洪毓康,陈强华. 钻孔灌注桩的荷载传递性能[J]. (岩土工程学报), 1985, 7(5): 22―24.Hong Yukang,Chen Qianghua. Load transfer performance of bored pile [J]. Chinese Journal of Geotechnical Engineering, 1985, 7(5): 22―24. (in Chinese)
[6]  董金荣,林胜天,戴一鸣. 大口径钻孔灌注桩荷载传递性状[J]. (岩土工程学报), 1994, 16(6): 123―131.Dong Jinrong,Lin Shengtian,Dai Yiming. Load transfer of cast-in-place pile [J]. Chinese Journal of Geotechnical Engineering, 1994, 16(6): 123―131. (in Chinese)
[7]  Seed H B,Reese L C. The action of soft clay along friction piles [J]. Proceedings of the American Society of Civil Engineers, 1955, (81): 112―118.
[8]  陈龙珠,梁国钱,朱金颖,葛炜. 桩轴向荷载-沉降曲线的一种解析算法[J]. (岩土工程学报), 1994, 16(16): 30―37.Chen Longzhu,Liang Guoqian,Zhu Jinying,Ge Wei. A parsing algorithm of axial load-settlement curve for pile [J]. Chinese Journal of Geotechnical Engineering, 1994, 16(16): 30―37. (in Chinese)
[9]  朱金颖,陈龙珠,葛炜. 层状地基中桩静载试验数据拟合分析[J]. (岩土工程学报), 1998, 20(3): 34―39.Zhu Jinying,Chen Longzhu,Ge Wei. Test data analysis for axially loaded piles in layered soil [J]. Chinese Journal of Geotechnical Engineering, 1998, 20(3): 34―39. (in Chinese)
[10]  邱钰,胡雪辉,刘松玉. 用荷载传递法计算深长大直径嵌岩桩单桩沉降[J]. (土木工程学报), 2001, 34(5): 72―75.Qiu Yu,Hu Xuehui,Liu Songyu. A formula for calculating the settlement of long rock-socketed single pile [J]. China Civil Engineering Journal, 2001, 34(5): 72―75. (in Chinese)
[11]  赵明华,邹丹,邹新军. 群桩沉降计算的荷载传递法[J]. (工程力学), 2006, 23(7): 119―123.Zhao Minghua,Zou Dan,Zou Xinjun. Settlement calculation of pile groups by load transfer method [J]. Engineering Mechanics, 2006, 23(7): 119―123. (in Chinese)
[12]  张忠苗. 桩基工程[M]. 北京: 中国建筑工业出版社, 2007: 165―180Zhang Zhongmiao. Pile foundation engineering [M]. Beijing: China Architecture and Building Press, 2007: 165―180(in Chinese)
[13]  王旭东,刘宇翼,宰金珉,诸宏博. 考虑剪切刚度系数变化的单桩弹塑性解[J]. (岩土工程学报), 2007, 29(12): 1758―1762.Wang Xudong,Liu Yuyi,Zai Jinmin,Zhu Hongbo. Elastic-plastic solution for axially loaded single pile considering variation of shear stiffness coefficient [J]. Chinese Journal of Geotechnical Engineering, 2007, 29(12): 1758―1762. (in Chinese)
[14]  Cooke R W,Price G,Tarr K. Jacked piles in London clay: A study of load transfer and settlement under working conditions [J]. Geotechnique, 1979, 29(2): 113―147.
[15]  Randolph M F,Worth C P. Analysis of deformation of vertically loaded piles [J]. Journal of Soil Mechanics and Foundations Division, 1978, (12): 56―61.
[16]  赵明华,张玲,杨明辉. 基于剪切位移法的刚性桩复合地基沉降计算[J]. (上海交通大学学报), 2007, 41(6): 965―969.Zhao Minghua,Zhang Ling,Yang Minghui. The settlement calculation of rigid-pile composite foundation by shear displacement method [J]. Journal of Shanghai Jiaotong University, 2007, 41(6): 965―969. (in Chinese)
[17]  高盟,高广运,杨成斌,冯世进,季瑜君. 层状地基群桩沉降计算的剪切位移解析解[J]. (岩土力学), 2010, 31(4): 1072―1077.Gao Meng,Gao Guangyun,Yang Chengbin,Feng Shijin,Ji Yujun. Analytical solution for settlement of group piles in layered group based on shear displacement method [J]. Rock and Soil Mechanics, 2010, 31(4): 1072―1077. (in Chinese)
[18]  Poulos H G. Analysis of settlement of pile groups [J]. Geotechnique, 1968, 18(3): 449―471.
[19]  周红波. 桩侧泥皮和桩底沉渣对钻孔桩承载力影响的数值模拟[J]. (岩土力学), 2007, 28(5): 956―960.Zhou Hongbo. Numerical simulation of effects of mud cake and bottom sediment on bearing capacity of bored pile [J]. Rock and Soils Mechanics, 2007, 28(5): 956―960. (in Chinese)
[20]  JGJ94-2008,建筑桩基技术规范[S]JGJ94-2008, 建筑桩基技术规范[S].北京:中国计划出版社, 2008.JGJ94-2008,Technical code for building pile foundations [S]JGJ94-2008, Technical code for building pile foundations [S].Beijing:China Planning Press, 2008. (in Chinese)
[21]  彭吉五. 考虑基岩埋置深度影响时单桩沉降特性研究[D]. 杭州: 浙江大学, 2007.Peng Jiwu. Research on the settlement of single pile considering the effect of embedded depth for bedrock [D]. Hangzhou: Zhejiang University, 2007. (in Chinese)
[22]  陈嘉熹. 虚土桩法可行性初步研究及分析[D]. 杭州: 浙江大学, 2008.Chen Jiaxi. Preliminary feasibility studies and analysis on method of virtual pile of soil [D]. Hangzhou: Zhejiang University, 2008. (in Chinese)
[23]  Coyle H M,Reese L C. Load transfer for axially loaded piles in clay [J]. Journal of Soil Mechanics and Foundations Division, 1966, 92(Suppl 2): 1―26.
[24]  Vijayvergiya V N. Load-movement characteristics of piles [J]. Coastal and Ocean Division, 1977(2): 269―284.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133