Numerical and experimental model studies of the horizontal bearing properties of shaft linings of encased steel or steel fiber reinforced, high strength concrete

作者：Han Tao^*; Yang Wei Hao; Ren Yan Long; Yang Zhi Jiang

来源：Journal of China University of Mining & Technology, 2012, 41(2): 205-211.

• Adjacent layers
• Alluvium
• Bearing properties
• Encased-steel and SFRC
• Experimental models
• High strength concretes
• Horizontal bearing capacity
• Horizontal loading
• Model experiment
• Non-dimensional parameters
• Numerical results
• Reinforcement ratios
• Shaft lining
• Steel linings
• Steel ribs
• Uni-axial compression
• Vertical loadings
• Vertical stress

Numerical and experimental models were used to study the horizontal bearing properties of shaft linings consisting of encased steel or steel fiber reinforced, high strength concrete. The calculations show that a number of non-dimensional parameters have obvious effects on the ultimate horizontal bearing capacity. These factors include the ratio of thickness to outer radius, of vertical stress to uniaxial compression strength, and of the spacing between adjacent layers of steel ribs to total lining thickness. The reinforcement ratio also is seen to have an effect. An equation for ultimate horizontal bearing capacity was derived from the numerical results. The experimental model shows that the encased steel lining deforms in conjunction with the concrete during the vertical loading stage. During horizontal loading the encased steel shows plastic deformation at the yield stress. The shear strain in the encased steel lining approximates the strain in the concrete, -2.3×10-3 to -3.0×10-3, when the lining is damaged. Numerical analysis can be used to estimate the ultimate horizontal bearing properties of both encased steel or steel fiber reinforced, high strength concrete linings.

• 出版日期2012
• 单位中国矿业大学（北京）