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Bearing Capacity and Critical Punch-Through Depth of Spudcan on Sand Overlying Clay 被引量:3
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作者 刘君 于龙 +1 位作者 周慧 孔宪京 《China Ocean Engineering》 SCIE EI CSCD 2014年第1期139-147,共9页
Spudcan may experience punch-through failure on strong over weak layered soils, such as sand overlying clay. A large deformation finite element method (LDFE) is used to simulate the penetration process of spudcan in... Spudcan may experience punch-through failure on strong over weak layered soils, such as sand overlying clay. A large deformation finite element method (LDFE) is used to simulate the penetration process of spudcan into sand overlying clay. The sand is simulated by smoothed hyperbolic Mohr-Coulomb model, and the clay is simulated by a simple elasto-plastic model which obeys Tresca yield criterion. According to the LDFE results of a large amount of cases, the effects of the strength, unit weight and thickness of the top sand layer, as well as the effect of the strength of the underlying clay on the spudcan punch-through behavior, are investigated. The critical depth occurring punch-through and the critical bearing capacity are presented in charts. Fitting equations to calculate the critical punch-through depth and the critical bearing capacity are proposed for the convenience of engineering practice. 展开更多
关键词 spudcan foundation PUNCH-THROUGH sand overlying clay double layer jack-up platform
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RESEARCH ON THE SEROSITY DURING INJECTING CLAY GROUTS INTO THE OVERLYING ROCK STRATA 被引量:1
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作者 杨逾 范学理 +2 位作者 杨伦 赵德深 刘文生 《Journal of Coal Science & Engineering(China)》 2000年第2期27-30,共4页
On the basis of the mechanism study of injecting clay grouts into overlying strata, the clay grouts are researched in greater detail from three aspects. The flowing state of clay grouts in the strata——the pattern of... On the basis of the mechanism study of injecting clay grouts into overlying strata, the clay grouts are researched in greater detail from three aspects. The flowing state of clay grouts in the strata——the pattern of different direction flowing around a point source is advanced and the flowing equation is put forward which is correspond with experiment result, and the corresponding mechanical model is set up which has its formulistic study, and the function of clay grouts is also discussed after the water in it has been lost, at the same time the concept of similar rock in effective supporting zone is given. It would draw great positive inspiration from what studied in this paper for studying on drawing down the surface subsidence by injecting. 展开更多
关键词 injecting clay grouts into overlying rock strata flowing pattern mechanical model similar rock.
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