Based on the framework of FEM software ABAUQS, the three-dimensional numerical analysis for effective length of super-long and large-diameter pile groups is provided. For the pile groups of different arrangements under vertical loading, the effective pile-length was analyzed with the method of bearing capacity control. The results show that the effective pile-length increases with pile number while decreases with the space between piles. The corresponding bearing capacity decreases with pile number while the space between piles has little effect on the corresponding bearing capacity.
CHEN Pei-Zhen
,
LUAN Mao-Tian
,
LUO Qiang
. Parametric finite element analysis of effective pile-length in super-long and large-diameter pile groups[J]. Journal of University of Chinese Academy of Sciences, 2012
, (3)
: 307
-311
.
DOI: 10.7523/j.issn.2095-6134.2012.3.004
[1] Zeng Y J, Zhang W M, Wang N X, et al. Discussion of several problems about effective length of foundation pile[J]. Rock and Soil Mechanics, 2003(S2): 533-538(in Chinese). 曾友金,章为民,王年香,等. 基桩有效桩长几个问题的探讨[J]. 岩土力学,2003(S2):533-538.
[2] Shu X, Huang Y. Determining method for effective length of foundation pile[J]. Industrial Construction, 2001, 31(1): 72-74(in Chinese). 舒翔,黄雨. 基桩有效桩长的确定方法[J]. 工业建筑,2001,31(1):72-74.
[3] Luo W D. Study on load-settlement equation for loaded pile-soil system[J]. Chinese Journal of Geotechnical Engineering, 1990, 12(1): 35-44(in Chinese). 罗惟德. 单桩承载机理分析与载荷-沉降曲线的理论推导[J]. 岩土工程学报,1990,12(1):35-44.
[4] Zeng Y J, Zhang W M. Effective length of foundation pile in the soil layers of deep overlay[J]. Jounal of Southeast University:Natural Science Edition, 2002, 32(5): 823-828(in Chinese). 曾友金,章为民. 深厚覆盖土层中普通桩的有效桩长[J]. 东南大学学报:自然科学版,2002,32(5):823-828.
[5] Zeng Y J, Zhang W M. Determining effective length of common-used pile by method of settlement control[J]. Geotechnical Investigation & Surveying, 2002(6): 6-8(in Chinese). 曾友金,章为民. 按桩顶沉降控制法确定普通桩的有效桩长[J]. 工程勘察,2002(6):6-8.
[6] Zeng Y J, Zhang W M, Wang N X, et al. Determination of effective length of a common pile in deep overlay soil layers with secant rigidity of pile[J]. Rock and Soil Mechanics, 2003(5): 49-54(in Chinese). 曾友金,章为民,王年香,等. 按桩的割线刚度确定深厚覆盖土层中普通桩有效桩长[J]. 岩土力学,2003(5):49-54.
[7] Jiang J P, Gao G Y, Wang M W. FEM numerical simulation on effective length of large diameter and super-long pile[J]. Building Science, 2003(3): 27-29(in Chinese). 蒋建平,高广运,汪明武. 大直径超长桩有效桩长的数值模拟[J]. 建筑科学,2003(3):27-29.
[8] Ding J W, Liu S Y. Discussion on effective length of super-long pile[J]. Journal of Highway and Transportation Research and Development, 2006(10): 83-85(in Chinese). 丁建文,刘松玉. 关于超长桩有效桩长问题的探讨[J]. 公路交通科技,2006(10):83-85.
[9] 张琨. 均质土中超长桩有效桩长的数值分析[J]. 珠江水运,2010(4):66-67.
[10] Hibbitt, Karlsson, Sorensen. ABAQUS scripting user's manual for version6.3[M]. Pawtucket, USA: HKS, 2002.
[11] 庄茁, 张帆, 岑松,等. ABAQUS非线性有限元分析与实例[M]. 北京: 科学出版社, 2005.
[12] 中国建筑科学研究院. JGJ94-94建筑桩基技术规范[S]. 北京: 中国建筑出版社, 1995.
