成层地基土中水平受荷桩桩身响应的矩阵传递解

竺明星; 龚维明; 何小元

doi:10.11779/CJGE2015S2010

成层地基土中水平受荷桩桩身响应的矩阵传递解 English Version

1. 东南大学土木工程学院,江苏南京 210096; 2. 东南大学混凝土及预应力混凝土结构教育部重点实验室,江苏南京 210096

基金项目: 国家重点基础研究发展计划（“973”计划）项目（2013CB036304）; 国家自然科学基金项目（51478109）; 交通运输重大专项（2011318494160）

详细信息

作者简介:
竺明星(1985- ),男,江苏南京人,博士研究生,主要从事桩基础理论和岩土工程数值分析方面的研究工作。

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出版历程
- 收稿日期: 2015-03-25
- 发布日期: 2015-07-24

Transfer matrix solutions for responses of laterally loaded piles in multilayered soil deposits

1. School of Civil Engineering, Southeast University, Nanjing 210096, China; 2. Key of Laboratory for RC and PRC Structure of Education Ministry, Southeast University, Nanjing 210096, China

摘要

摘要:
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- 水平受荷桩 /
- 成层地基 /
- 桩身响应 /
- 地基反力模型 /
- 矩阵传递法
Abstract: Currently, there are few references available on the researches on the internal force and deflection of laterally loaded piles in multilayered soil deposits. Based on the assumptions of postulating that layered soils are homogeneous elastic media and the pile is a vertically embedded foundation beam, as well as the interaction between pile and soil is simulated by three-parametric subgrade reaction model, the governing differential equations for the pile responses in different soil layers are established, and the transfer matrix coefficients at arbitrary depth are obtained using the Laplace transform. Subsequently, the transfer matrix solutions for pile deflection, slope, bending moment and shear force under lateral loading are obtained. Compared with the conventional finite difference method and power series approach, the transfer matrix method is more convenient to solve pile responses in layered soils. Some comparisons are made between the results of references and the calculated ones by the proposed approach, and reasonable agreement is obtained. Finally, parametric studies on influence factors are also performed. The results indicate that the boundary conditions at pile head have a significant impact on the distribution of pile internal force and deflection along pile shaft. Besides that, z₀ and n of reaction model have a remarkable influence on the maximum pile deflection and bending moment.
- laterally loaded pile /
- multilayered soil deposit /
- pile response /
- subgrade reaction model /
- transfer matrix method

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参考文献(13)

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