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| SHEAR RHEOLOGICAL MODEL FOR HARD STRUCTURAL SURFACE AND TEST NUMERICAL ANALYSIS |
| XIONG Liangxiao1，YU Lijun2，YANG Changbin3 |
| (1. Faculty of Architectural，Civil Engineering and Environment，Ningbo University，Ningbo，Zhejiang 315211，China；2. Zhejiang Geotechnical and Foundation Companay，Ningbo，Zhejiang 315040，China；3. Wuhan Surveying-Geotechnical Research Institute Co.，Ltd. of MCC，Wuhan，Hubei 430080，China) |
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Abstract The shear creep curve of hard structural surface was analyzed by using generalized Kelvin model，Burgers model and six-component rheological model，respectively. The interface element in FLAC3D was improved. The shear rheological model and numerical analysis method of shear creep test of hard structural surface were put forward. The research result shows that the six-component viscoelastic shear rheological model is appropriate for analyzing the shear creep property of hard structural surface. The shear creep deformation increases with increasing slope ratio if the slope ratio is smaller than 45°，while the result will be quite on the contrary if the slope ratio is higher than 45°. In addition，the shear creep deformation will increase with increasing shear stress under fixed normal stress，and the shear creep deformation will decrease with increasing normal stress under fixed shear stress.
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2015, Vol. 34 
