Simplified analysis of stress characteristics of beam-slab type raft foundation for wind turbine on land

WANG Hong-wei; JIU Yong-zhi; MU Lin-long

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Simplified analysis of stress characteristics of beam-slab type raft foundation for wind turbine on land

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- Simplified analysis of stress characteristics of beam-slab type raft foundation for wind turbine on land
- Vol. 33, Issue S1, (2012)
- 作者机构：
  
  1. 国华能源投资有限公司,北京,100007
  2. 同济大学地下建筑与工程系,上海,200092
  3. 同济大学岩土及地下工程教育部重点实验室,上海,200092
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：21 September 2012，
  
  Published：2012
- 稿件说明：
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WANG Hong-wei, JIU Yong-zhi, MU Lin-long. Simplified analysis of stress characteristics of beam-slab type raft foundation for wind turbine on land[J]. 2012, 33(S1).
DOI：

WANG Hong-wei, JIU Yong-zhi, MU Lin-long. Simplified analysis of stress characteristics of beam-slab type raft foundation for wind turbine on land[J]. 2012, 33(S1). DOI：

摘要

提出一种多向荷载同时作用下的刚性桩筏基础简化计算方法，基于Mindlin解，分析桩顶面-桩顶面、桩顶面-土表面、土表面-土表面的相互作用关系。推导多向荷载下桩土体系柔度矩阵，得到刚性桩筏基础的受力和变形的关系，通过与有限元对比证明了文中方法的正确性，在此基础上对耦合荷载作用下的风机基础的受力和变形特性进行分析。研究表明，耦合荷载作用下风机基础将会产生竖向不均匀沉降，并会引起桩顶轴力的的巨大的差异。

Abstract

A simplified analytical approach is proposed to study the behavior of the piled raft foundation with rigid raft subjected coupled loads in layered soils. Based on solutions of Mindlin

the interactions between pile and pile

pile and soil

soil and soil were taken into account to determine the flexibility matrix of the pile group-soil system; then the load-settlement relationship of piled raft foundation subjected coupled loads was obtained. Comparison between the results from the finite elements and the calculated results was carried out

and the feasibility of the present method for analyzing piled raft foundation is proved. Then the method is used to study the stresses and distortion characteristics of the pile raft subjected coupled loads. The numerical results indicate that the piles’ axial force and the settlement of piled raft foundation subjected coupled loads are nonuniform.

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