Research on Stability Analysis of Rock Bolt Crane Girder Needed

Abstract:

Rock bolt crane girder is a structure form which is widely used in the underground powerhouse of hydropower station. It makes reinforced concrete anchored in the underground powerhouse rock using anchor rod, and makes the reinforced concrete, anchor rod and surrounding rock work together to resist the load. Stability has been a common problem in the realm of engineered construction. This article will analysis the stability of the rock bolt crane girder in a underground powerhouse of hydropower station by using the traditional rigid body limit equilibrium method and the finite element method, and give several destroying forms. The results show that the rigid body limit equilibrium method is flawed, need to be corrected; In overload cases, the contact surface of girder and rock crack, it turns the damage to the bottom O point at the end; When it is simulated by the strength storage method, the crane girder's shear yield slips the damage along the base.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 2622-2625
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.2622
• Online since: May 2011
• Authors: Heng Xiang Zheng, Rong He, Xiao Yang Huang
• Keywords: Crane Girder, Destroying Forms, Stability Analysis, Underground Powerhouse

References

[1] M.Y.Xu, W.M. Wang, and S.H. Chen:Load calculation in 3D rigid body limit equilibrium method and engineering application,Rock and Soil Mechanics,Vol.25(2004), p.755–758

[2] X.M.Lu, C.X. Liu:Mechanical analysis and design of crane beam on rock wall for underground power house, Journal of Hohai University (Natural Science), Vol. 35(2007), p.30–34

[3] G.B. Shi: Analysis of stability for rock-bolt crane beam with non-continuous deformation method, Northwest Water Power ,Vol.1(2006), p.19–21

[4] G.B. Shi, Y.Q. Liu, and J.C.Li:Discussion on limit equilibrium method of rock-wall crane beam rigid body, Northwest Water Power, Vol.5(2005), p.15–21

[5] K. Ivanyts, Y. L. Andreikiv, A.O.: State of limiting equilibrium of cracked bodies for mixed macromechanisms of fracture, Materials Science New York, Vol.39(2003), p.472–480

DOI: 10.1023/b:masc.0000010923.65166.4e

[6] M.M. Stadnyk: Limiting equilibrium of a body with elliptic crack under complex load, Materials Science New York, Vol.106(2009), p.220–226

DOI: 10.1007/s11003-009-9178-3

[7] X.S. Lin:Stability analysis for underground powerhouse and tunnels of Xiao lang di Multipurpose Dam Projec, Challenges for the 21st Century, Vol.2(1999), p.44–50

[8] Central-South survey design institute of China hydropower consultant group: Design specifications for rock bolt crane girder in underground powerhouse(Q/CGECC003-2003), Changsha: Central-South survey design institute, (2008), p.18–26

[9] J.B. Liu, J.H.Ye, Y.X. Liu, S.J.Li,and Z.P. Zhang: Numerical analysis of rock-bolt crane girder based on ANSYS, Journal of Yellow River Conservancy Technical Institute, Vol. 16(2004), p.1–4