大直径超长群桩有效桩长问题的有限元参数分析

doi:10.7523/j.issn.2095-6134.2012.3.004

中国科学院大学学报 ›› 2012, Vol. ›› Issue (3): 307-311.DOI: 10.7523/j.issn.2095-6134.2012.3.004

大直径超长群桩有效桩长问题的有限元参数分析

陈培震^1,2, 栾茂田^1,2, 罗强^1,2

1. 大连理工大学海岸和近海工程国家重点实验室, 辽宁大连 116024;
2. 大连理工大学土木工程学院岩土工程研究所, 辽宁大连 116024

收稿日期:2011-02-28 修回日期:2011-05-12 发布日期:2012-05-15
通讯作者: 陈培震
基金资助:
国家自然科学基金(51079018)资助

Parametric finite element analysis of effective pile-length in super-long and large-diameter pile groups

CHEN Pei-Zhen^1,2, LUAN Mao-Tian^1,2, LUO Qiang^1,2

1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China;
2. Institute of Geotechncial Engineering, School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China

Received:2011-02-28 Revised:2011-05-12 Published:2012-05-15

摘要/Abstract

摘要： 采用大型有限元软件ABAQUS,针对大直径超长群桩的有效桩长进行三维有限元数值分析. 采用极限承载力控制法,对竖向荷载下不同布桩形式的大直径超长群桩基础的有效桩长进行研究. 结果表明:有效桩长随桩数的增多而增大,随桩距的增大而减小;桩数增多,有效桩长对应的群桩的极限承载力降低,桩距的变化对有效桩长对应的群桩的极限承载力影响不大.

关键词: 大直径超长群桩, 有效桩长, 极限承载力, 有限元分析

Abstract: 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.

Key words: super-long and large-diameter pile groups, effective length of piles, bearing capacity, finite element analysis

中图分类号:

TU473

陈培震, 栾茂田, 罗强. 大直径超长群桩有效桩长问题的有限元参数分析[J]. 中国科学院大学学报, 2012, (3): 307-311.

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]. , 2012, (3): 307-311.

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大直径超长群桩有效桩长问题的有限元参数分析

Parametric finite element analysis of effective pile-length in super-long and large-diameter pile groups

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