Bond Failure Mechanism of Fully Grouted Rock Bolts

Preface
Contents
1 Introduction
	1.1 Background
	1.2 Book Outline
	References
2 Analysis on the Shear Stress Propagation Mechanism in the Rock Reinforcement System
	2.1 Introduction
	2.2 Previous Study on the Shear Stress Propagation
		2.2.1 Investigation Approaches
		2.2.2 Shear Stress Propagation Mechanism
	2.3 Discussion
	2.4 Conclusions
	References
3 Numerical Simulation of the Shear Behaviour of Cement Grout
	3.1 Introduction
	3.2 Selection of the Software
	3.3 Numerical Simulation Process
		3.3.1 Simulation of the Cement Grout with a Higher Strength
		3.3.2 Simulation of the Cement Grout with a Lower Strength
	3.4 Analysis on the Shear Stress Distribution
	3.5 Recommendation for Further Work
	3.6 Conclusions
	References
4 Analytical Modelling to Study the Load Transfer Performance of Fully Grouted Rock Bolts
	4.1 Introduction
	4.2 Analytical Modelling
		4.2.1 Bond-Slip Model
		4.2.2 Governing Equation
		4.2.3 Pull-Out Stages of Rock Bolts
	4.3 Calibration of the Input Parameters
	4.4 Validation of the Analytical Model
		4.4.1 Validation with a Pull-Out Test
		4.4.2 Validation with the Other Pull-Out Test
	4.5 Parametric Study
		4.5.1 Elastic Modulus of the Confining Medium
		4.5.2 Shear Strength of the Bolt/Grout Interface
		4.5.3 Residual Shear Strength of the Bolt/Grout Interface
	4.6 Conclusions
	References
5 Analytical Studying the Confining Medium Diameter Impact on Load-Carrying Capacity of Rock Bolts
	5.1 Introduction
	5.2 Analytical Modelling Approach
	5.3 Modelling Process and Results
	5.4 Conclusions
	References
6 Studying the Bond Performance of Fully Grouted Rock Bolts Based on the Variable Controlling
	6.1 Introduction
	6.2 Calculating Principal of the Constitutive Equation
	6.3 Parameter Study
		6.3.1 Bolt Diameter
		6.3.2 Elastic Modulus of Bolts
		6.3.3 Grouting Length of Bolts
		6.3.4 Bond Slipping When the Bond Strength Was Reached
	6.4 Limitation of the Current Study
	6.5 Recommendation of Further Work
	6.6 Conclusions
	References
7 Analytical Modelling Rock Bolts with a Closed Nonlinear Model
	7.1 Introduction
	7.2 Illustration of the Analytical Model
	7.3 Validation of the Analytical Model
	7.4 Parametric Study
		7.4.1 The First Coefficient
		7.4.2 The Second Coefficient
		7.4.3 Elastic Modulus of the Rock Bolt
		7.4.4 Rock Bolt Diameter
	7.5 Load Distribution Along a Fully Grouted Rock Bolt
	7.6 Limitation and Recommendation for Future Work
	7.7 Conclusions
	References