›› 2015, Vol. 36 ›› Issue (7): 1877-1882.doi: 10.16285/j.rsm.2015.07.007

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

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

MU Lin-long1,2，LIAN Ke-nan1, 2，HUANG Mao-song1, 2，LI Da-jun3   

  1. 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. Guohua Energy Investment Co., Ltd., Beijing 100007, China
  • Received:2014-04-03 Online:2015-07-11 Published:2018-06-13

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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.

Key words: beam-slab foundation, pile-raft foundation, large-scale model test, wind turbine foundation

CLC Number: 

  • TU 473
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