Large-scale model test on bearing capacity of piled beam-slab 
foundation for wind turbine

MU Lin-long; LIAN Ke-nan; HUANG Mao-song; LI Da-jun

doi:10.16285/j.rsm.2015.07.007

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Large-scale model test on bearing capacity of piled beam-slab foundation for wind turbine

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- Large-scale model test on bearing capacity of piled beam-slab foundation for wind turbine
- Vol. 36, Issue 7, Pages: 1877-1882(2015)
- 作者机构：
  
  1. 同济大学岩土与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
  3. 国华能源投资有限公司,北京,100007
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.07.007
  CLC： TU473
- Online First：13 June 2018，
  
  Published：2015
- 稿件说明：
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MU Lin-long, LIAN Ke-nan, HUANG Mao-song, et al. Large-scale model test on bearing capacity of piled beam-slab foundation for wind turbine[J]. 2015, 36(7): 1877-1882.
DOI：

MU Lin-long, LIAN Ke-nan, HUANG Mao-song, et al. Large-scale model test on bearing capacity of piled beam-slab foundation for wind turbine[J]. 2015, 36(7): 1877-1882. DOI： 10.16285/j.rsm.2015.07.007.

摘要

梁板式桩筏基础与传统桩筏基础一样具有较高的承载力和变形控制能力，且较传统桩筏基础能够节约成本，具有重要经济效应，因而成为了新兴的基础形式被应用于风电基础中。然而目前该基础仍采用传统桩筏基础的设计方法进行计算，造成了巨大的浪费。为了弥补目前梁板式风机基础设计方法的缺陷，采用大型室内模型试验对梁板式风机基础的受力变形特性进行研究，分析了竖向荷载作用下梁板式风机基础内梁、桩、土体等的受力机制及特性。研究表明，在工作荷载范围内，梁板式桩筏基础体系处于弹性状态，且梁板式桩筏基础具有一定的柔性，中央与边缘存在一定的差异沉降。桩-桩相互作用及桩-土相互作用对具有一定柔性的梁板式桩筏基础受力变形特性具有重大的影响，应该修正现行设计时不考虑这几个因素的缺点。

Abstract

The piled beam-slab foundation is a new type of foundations for the wind turbine on land. The bearing capacity and the ability of deformation control of the piled beam-slab foundation are as good as those of the traditional pile-raft foundation. Compared with the traditional pile-raft foundation or the gravity foundation

it is popular for its great advantage in cost savings. Unfortunately

the piled beam-slab foundation is still designed according to the design method for traditional pile-raft foundation since now

which leads to a waste of money. In order to develop a reasonable design method for the piled beam-slab foundation

a large-scale model test is carried out to study the deformation characteristics and the mechanical property of the piled beam-slab foundation under vertical load. The study shows that the behavior of the piled beam-slab foundation system is elastic under the working load. A significant differential settlement occurs between the centre and the edge of the foundation. The pile-pile interaction and the pile-soil interaction which are not considered in the present design method have significant impacts on the behavior of the piled beam-slab foundation. Thus

it should be considered in the future design.

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