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| Mechanism model test of interaction between bucket foundation and soil subjected to torsional resistance |
| 1.Geotechnical and Structural Engineering Research Institute, Shandong University, Jinan, Shandong 250061, China; 2.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221008, China; 3.Civil and Construction College, Shandong University of Science and Technology, Qingdao, Shandong 266510, China; 4.School of Civil Engineering, Ludong University, Yantai, Shandong 264025, China; 5.School of Civil and Architecture Engineering, Northeast Dianli University, Jilin, Jilin 132012, China |
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Abstract Based on the model test, the failure mechanism of bucket foundation subjected to torsional resistance was investigated with different draw radio.
The results show that the curves from model test are in good consistency with numerical calculations. The rotation angle of bucket foundation is increased
by the increasing of torsional loading with almost linear relationship.At initial stage, the remarkable torsional loading variety leads to slight increase
of rotation angle.When the imposed loading reaches a stable value,slight enhancement of torsional loading can result in marked variety of rotation angle
with almost linear relationship. The inside and outside earth pressures of bucket foundation are axial symmetry. The inside earth pressure of foundation is
increased from top to bottom with almost identical outside earth pressure. The annulus shear failure at the bottom of foundation is generated by torsional
loading. The rotated shear deformation around the bucket foundation is generated with foundation axis as centre, and propagates around the foundation.
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Received: 20 October 2011
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2013, Vol. 34 
