To determine the ultimate bearing capacity of foundations on sloping ground surface in practice, energy dissipation method was used to formulate the beating capacity as programming problem, and full-scale model experi...To determine the ultimate bearing capacity of foundations on sloping ground surface in practice, energy dissipation method was used to formulate the beating capacity as programming problem, and full-scale model experiments were investigated to analyze the performance of the soil slopes loaded by a strip footing in laboratory. The soil failure is governed by a linear Mohr-Coulomb yield criterion, and soil deformation follows an associated flow rule. Based on the energy dissipation method of plastic mechanics, a multi-wedge translational failure mechanism was employed to obtain the three bearing capacity factors related to cohesion, equivalent surcharge load and the unit gravity for various slope inclination angles. Numerical results were compared with those of the published solutions using finite element method and those of model experiments. The bearing capacity factors were presented in the form of design charts for practical use in engineering. The results show that limit analysis solutions approximate to those of model tests, and that the energy dissipation method is effective to estimate bearing capacity of soil slope.展开更多
China has long been a coal-based energyconsumption country.The coal's combustion process andits particle size are closely related.Because there are stilldifficulties in understanding and mastering the energyconsum...China has long been a coal-based energyconsumption country.The coal's combustion process andits particle size are closely related.Because there are stilldifficulties in understanding and mastering the energyconsumption of comminution,the economic fineness tobalance comminution and burning is mainly obtainedaccording to experience.With the increasingly wide andextensive use of coal,the energy consumption of coalcomminution has been paid more and more attention.Inthis paper,the research on energy consumption ofcomminution is analyzed and summarized to provide areference for the energy consumption of coalcomminution.展开更多
基金Project(50408020) supported by the National Natural Science Foundation of Chinaproject(05-0686) supported by the Program of New Century Excellent Talents in Universityproject(200550) supported by the Foundation for the Author of National Excellent Doctoral Dissertation of China
文摘To determine the ultimate bearing capacity of foundations on sloping ground surface in practice, energy dissipation method was used to formulate the beating capacity as programming problem, and full-scale model experiments were investigated to analyze the performance of the soil slopes loaded by a strip footing in laboratory. The soil failure is governed by a linear Mohr-Coulomb yield criterion, and soil deformation follows an associated flow rule. Based on the energy dissipation method of plastic mechanics, a multi-wedge translational failure mechanism was employed to obtain the three bearing capacity factors related to cohesion, equivalent surcharge load and the unit gravity for various slope inclination angles. Numerical results were compared with those of the published solutions using finite element method and those of model experiments. The bearing capacity factors were presented in the form of design charts for practical use in engineering. The results show that limit analysis solutions approximate to those of model tests, and that the energy dissipation method is effective to estimate bearing capacity of soil slope.
文摘China has long been a coal-based energyconsumption country.The coal's combustion process andits particle size are closely related.Because there are stilldifficulties in understanding and mastering the energyconsumption of comminution,the economic fineness tobalance comminution and burning is mainly obtainedaccording to experience.With the increasingly wide andextensive use of coal,the energy consumption of coalcomminution has been paid more and more attention.Inthis paper,the research on energy consumption ofcomminution is analyzed and summarized to provide areference for the energy consumption of coalcomminution.
