基于Pasternak双参数地基模型水平桩简化分析方法

梁发云; 李彦初; 黄茂松

基于Pasternak双参数地基模型水平桩简化分析方法 English Version

梁发云^{1, 2},
李彦初^{1, 2},
黄茂松^{1, 2}

1. 同济大学岩土及地下工程教育部重点实验室，上海 200092；2. 同济大学地下建筑与工程系，上海 200092

基金项目: 国家自然科学基金面上项目（41172246）；中央高校基本科研业务费专项资金项目

详细信息

作者简介:
梁发云(1976- )，男，安徽肥东人，博士，教授，博士生导师，主要从事桩基础、深基坑工程及桥梁冲刷等方面的研究与教学工作。E-mail: fyliang@tongji.edu.cn。

中图分类号: TU471
计量
- 文章访问数: 0628
- HTML全文浏览量: 0
- PDF下载量: 0697
出版历程
- 收稿日期: 2013-02-28
- 发布日期: 2013-07-18

Simplified method for laterally loaded piles based on Pasternak double-parameter spring model for foundations

LIANG Fa-yun^{1, 2},
LI Yan-chu^{1, 2},
HUANG Mao-song^{1, 2}

1. Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China

摘要

摘要: 基于Winkler模型的弹性地基反力法是水平受荷桩分析中应用较为广泛的方法，该模型忽略了土弹簧间的剪切作用，与工程实际不符。引入Pasternak双参数地基模型，考虑土弹簧单元间的相互剪切作用，提出了一种考虑土体剪切作用的双参数水平受荷桩分析方法，在计算中采用了考虑地基反力模量随深度变化的改进方法。算例分析表明，随着土体剪切刚度的增加，剪切刚度对水平受荷桩性状的影响愈加明显，该方法与Winkler地基反力法相比，理论上更为严谨，有效地提高了计算精度。
- Pasternak双参数地基 /
- 剪切作用 /
- 水平受荷桩 /
- 地基模量 /
- 有限差分法
Abstract: The elastic subgrade reaction method based on Winkler foundation model is widely used in the analysis of laterally loaded piles currently. However, the soil is regarded as non-continuum and the shear action between soils is neglected in this method, which is not correspondent with engineering practice. A simplified analysis method based on double-parameter foundation model which can consider shear action is proposed for laterally loaded piles. This method successfully takes into account the change of the subgrade modulus with depth. The results show that the effect of shear action cannot be neglected with the increase of shear modulus of soil. Compared with the elastic subgrade reaction method, the proposed method is more rigorous in theory and has higher calculation accuracy.
- Pasternak double-parameter foundation /
- shear action /
- laterally loaded pile /
- soil modulus /
- finite difference method

HTML全文

参考文献(1)

BROWN D A,SHIE C F. Three dimensional finite element model of laterally loaded piles [J]. Computers and Geotechnics, 1990(10): 59-79.
POULOS H G. Behavior of laterally loaded piles: I - single piles[J]. Journal of the Soil Mechanics and Foundations Division, ASCE, 1971, 97(5): 711-731.
HETENYI M. Beams on elastic foundations[M].Michigan:University of Michigan Press, 1946.
REESE L C,COX W R,KOOP F D. Analysis of laterally loaded piles in sand[C]// Proceedings of the 6th Annual Offshore Technology Conference. Houston, 1974: 473-483.
VLASOV V Z,LEONTIEV N N. Beams, plates and shells on elastic foundation[R]. Washington DC: NTIS Accession No. N67-14238, Israel Program for Scientific Translations, 1966.
PASTERNAK P L. Fundamentals of a new method of analyzing structures on an elastic foundation by means of two foundation constants[M]. Moscow: Gosudarstvennoe Izdatelstro Liberaturi po Stroitelstvui Arkhitekture, 1954.
SUN K. Laterally loaded piles in elastic media[J]. Journal of Geotechnical Engineering, ASCE, 1994, 120: 1324-1344.
张望喜,易韦建,陈友坤,等. 双参数地基推力长桩的水平位移解析解[J]. (建筑科学与工程学报), 2007, 24(4): 34-38.(ZHANG Wang-xi,YI Wei-jian,CHEN You-kun,XIE Xiao-an. Analytical solutions about horizontal displacement of laterally loaded long piles under double-parameter foundation[J]. Journal of Architecture and Civil Engineering, 2007, 24(4): 34-38. (in Chinese))
俞剑,张陈蓉,黄茂松. 被动状态下地埋管线的地基模量[J]. (岩石力学与工程学报), 2012, 31(1): 123-132.(YU Jian,ZHANG Chen-rong,HUANG Mao-song. The subgrade modulus of underground pipelines subjected to soil movements[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(1): 123-132. (in Chinese))
TANAHASHI H. Formulas for an infinitely long Bernoulli-Euler beam on the Pasternak model[J]. Journal of the Japanese Geotechnical Society, 2004, 44(5): 109-118.
YAO W J,YIN W X. Numerical simulation and study for super-long pile group under axis and lateral loads[J]. International Journal of Advanced Structural Engineering, 2010, 13(6): 1139-1151.
VESIC A S. Bending of beams resting on isotropic elastic solids[J]. Journal of Soil Mechanics and Foundation Engineering, ASCE, 1961, 87(2): 35-53.
GOH ATC,TEH CI,WONG KS. Analysis of piles subjected to embankment induced lateral soil movements[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(9): 792-801.
HUANG M S,ZHANG C R,LI Z. A simplified analysis method for the influence of tunneling on grouped piles[J]. Tunneling and Underground Space Technology, 2009, 24(4): 410-422.
FILHO R M,MENDONCA A V,PAIVA J B. Static boundary element analysis of piles submitted to horizontal and vertical loads[J]. Engineering Analysis with Boundary Elements, 2005, 29: 195-203.
KERISEL J,ADAM M. Calcul des forces horizontales applicables aux fondations profondes dans les argiles el limons[J]. Annales d’Institut Technique du Batiment e des Travaux Publics, Paris, 1967, 239: 1653-94.
陈海兵. 轴向与横向荷载作用下单桩分析方法及两桩相互作用系数研究[D]. 上海: 同济大学, 2011.(CHEN Hai-bing. Lateral response of single pile under axial loading and note on two-pile interaction factor[D]. Shanghai: Tongji University, 2011. (in Chinese))
PAK RYS. On the flexure of a partially embedded bar under lateral loads [J]. Journal of Applied Mechanics, 1989, 56(2): 263-269.

施引文献

资源附件(0)

计量

文章访问数:
HTML全文浏览量: 0
PDF下载量:
被引次数: 0

基于Pasternak双参数地基模型水平桩简化分析方法 English Version

作者简介: 梁发云(1976- )，男，安徽肥东人，博士，教授，博士生导师，主要从事桩基础、深基坑工程及桥梁冲刷等方面的研究与教学工作。E-mail: fyliang@tongji.edu.cn。

计量

出版历程

Simplified method for laterally loaded piles based on Pasternak double-parameter spring model for foundations

计量

出版历程

目录

作者简介:
梁发云(1976- )，男，安徽肥东人，博士，教授，博士生导师，主要从事桩基础、深基坑工程及桥梁冲刷等方面的研究与教学工作。E-mail: fyliang@tongji.edu.cn。