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100037, China;2. School of Engineering and Technology, China University of Geosciences (Beijing), Beijing 100083, China;3. Haikou Forest Farm, Kunming 650114, China)Abstract:An analysis of the stability of large-diameter circular tunnels and ground settlement during tunnelling by a pressurized shield was presented. An innovative three-dimensional translational multi-block failure mechanism......
analysis method to calculate failure probabilities of slope directly without fitting a approximate limit state surface was studied in this paper. And the method is applicable to the concrete sliding... to the response surface method for reliability analysis[J]. Structural Safety, 2003, 25(1): 99-121. [4] SCH?ELLER G I. On efficient computational scheme to calculate structural failure probability[J......
], LI and STILLBORG [6], BOBET and EINSTEIN [7], and CAI et al [8] proposed the mechanical analysis model of surrounding rocks under bolt support based on the elastic-plastic theory. As for the failure... a theoretical analysis model. The above researches mainly focused on the bolt body breakup and the bonding failures on the bolt/grout interface. But the poor capacity and failure of bonding on the grout/rock......
into the kinematic approach of limit analysis to conduct the evaluation of the stability of 3D slopes. A tangential technique is adopted to simplify the nonlinear failure criterion in the form.... Compared with the solutions derived from plane-strain analysis, the 3D solutions are more sensitive to the values of nonlinear parameters. Key words: three-dimensional slope; nonlinear failure......
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rock mass visually and comprehensively. Key words: stratified rock sample; triaxial compression; failure characteristic; deformation characteristic; numerical analysis 岩土介质在形成及变化过程中,由于地质沉积作... analysis for stratified rock mass under triaxial compression considering strain soften characteristic zhou bin1, 2, zhang ke-neng1, liu qun-yi3 (1. School of Geoscience and Environment Engineering......
410001, China) Abstract: Under the condition of nonlinear failure criterion, the earthquake force was regarded as pseudo-static load. In the framework of the upper bound of limit analysis, the passive... X J, Chen W F. Stability analysis of slopes with general nonlinear failure criterion[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1987, 11(1): 33-50. [14] Soubra......
is studied in this paper. The slope safety factor is computed by combining the kinematic approach of limit analysis using a three-dimensional rotational failure mechanism with the pseudo-dynamic approach... variables and the pseudo-dynamic approach gives more conservative failure probability estimates compared with the pseudo-static approach. Key words: seismic slope stability; pseudo-dynamic analysis......
of the wall, simultaneously, by effectively using the multi-objective optimization. The results obtained by the proposed failure mechanisms show that, while using the upper bound limit analysis approach... element analysis. The critical failure mechanisms were determined via optimization with genetic algorithm. Key words: retaining wall; upper bound; pseudo-static analysis; safety factor; multi......
J. Cent. South Univ. (2017) 24: 2894-2905 DOI: https://doi.org/10.1007/s11771-017-3703-6 Numerical investigations on mechanical characteristics and failure mechanism of outwash deposits based... the complexity of mechanical characteristics and failure mechanism. In this work, random meso-structure of outwash deposits was constructed by the technique of computer random simulation based on characteristics......
