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Abstract:This study conducted bearing capacity test of high-steep rock slope foundation under different slope angles and slope distances to investigate the bearing capacity of high-steep rock slope foundation. We carried out numerical simulation to analyze the influencing factors of the bearing capacity of the high-steep rock slope foundation,combined with the deep waste pit project. The results show that: (1)The capacity coefficient η gradually decreases with the increase of the slope angle β,and increases nonlinearly with the increase of slope distance B. When the slope distance B exceeds a certain value, the bearing capacity coefficient η no longer increases and approximates 1. 0. (2)Compared with slope angle β,geological strength index GSI exerts significant influence on the bearing capacity coefficient, and both of them increase nonlinear synchronously. (3)Anchor cable could improve the bearing capacity coefficient η. When four anchor cables are set,the bearing capacity coefficient η demonstrates more significant improvement. Yet,further increase in the number of anchor cables has little effect on the bearing capacity coefficient η. [ABSTRACT FROM AUTHOR]

Nowadays many countries plan to increase the percentages of renewable energies by developing offshore wind power. Due to the large sizes of offshore foundations, such as spudcan footings of jack-up barges or pile anchors of wind turbines, the affected soil depth range caused by the foundation under loading can be relatively deep, so the affected range may include a single thick layer or stratified soils. This paper utilizes limit analysis and FLAC numerical simulation to investigate the bearing capacity of a footing on single thick stratum or two-layered cohesive soils. Under nature deposition condition, the undrained shear strength of most cohesive soil approximately increases linearly as the depth increases. The closed-form upper bound solutions of fully rough or fully smooth footings on thick cohesive soils are provided, for the purpose of fast evaluations in practical engineering, and the outcomes are within the results from the FLAC simulation and slip circle method. The problems of punch-through shear failure or soil squeezing could be critical for two-layered soils under some conditions, and the associated bearing factors and the failure mechanisms from different methods are demonstrated and discussed in the article.

Nowadays many countries plan to increase the percentages of renewable energies by developing offshore wind power. Due to the large sizes of offshore foundations, such as spudcan footings of jack-up barges or pile anchors of wind turbines, the affected soil depth range caused by the foundation under loading can be relatively deep, so the affected range may include a single thick layer or stratified soils. This paper utilizes limit analysis and FLAC numerical simulation to investigate the bearing capacity of a footing on single thick stratum or two-layered cohesive soils. Under nature deposition condition, the undrained shear strength of most cohesive soil approximately increases linearly as the depth increases. The closed-form upper bound solutions of fully rough or fully smooth footings on thick cohesive soils are provided, for the purpose of fast evaluations in practical engineering, and the outcomes are within the results from the FLAC simulation and slip circle method. The problems of punch-through shear failure or soil squeezing could be critical for two-layered soils under some conditions, and the associated bearing factors and the failure mechanisms from different methods are demonstrated and discussed in the article. [ABSTRACT FROM AUTHOR]