Paper Infomation
Stability Analysis of Bolt-reinforced Slopes Using of 3D DDA
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Author: Peideng Jing, Guangqi Chen
Abstract: This paper provides the stability analysis of blot-reinforced slopes using of 3D DDA (Discontinuous Deformation Analysis). Up to now, the 2D DDA has been developed maturely in theory and practice. However, the usage of 3D DDA is rare according to literature review especially in practical 3D slopes. The function of bolt reinforcement has been fulfilled in the 2D DDA, while it has not been realized and applied in practical engineering in the 3D DDA. For the practical engineering problem, obviously, the 3D analysis is more accurate. Therefore, to fulfil the function of bolt reinforcement and application in practical engineering is still a problem for the 3D DDA. In this research, firstly, some basic theory about the 3D DDA method and the CRLD (Constant Resistance and Large Deformation) bolt model will be illustrated. Secondly, how to add the function of bolt reinforcement to the 3D DDA is illustrated, and then a simple test mode is used to test its accuracy. Lastly, a slope model is used as an example to verify its usage in engineering. In this paper, the process of adding bolt function in the 3D DDA is illustrated and the verification in slope is made, which benefits the future development of 3D DDA in landslide mitigation.
Keywords: 3D DDA; Bolt Mechanism; CRLD
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