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Experimental Study on Friction Coefficient Between Concrete and the Top Surface of rubble mound foundation

China Ocean Engineering 2005年第2期19卷 287-298页

作者：李炎保蒋学炼郭鸿仪 School of Civil Engineering Tianjin University Tianjin 300072 China

Experimental studies on the friction coefficient between concrete and the top surface of a rubble mound foundation in China are reviewed. Through comparison of different test results, the development of this research is comprehensively analyzed. An experiment is carried out in the condition similar to prototype. The process curve of friction coefficient with the test block sliding is analyzed and a standard for determination of the friction coefficient is defined. The variation features of the friction coefficient are analyzed on the basis of the present experimental results and other studies in China. It is shown that the friction coefficient between concrete and the top surface of a rubble mound foundation decreases with the increase of the foundation pressure, and the friction coefficient for a very fine leveling bed is smaller than that for a fine leveling bed.

关键词： concrete rubble mound foundation friction coefficient foundation pressure fine leveling bed

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Irregular　wave－induced　seepage　action　on　cylinders　resting　on　rubble　mound　foundation

引用

Acta Oceanologica Sinica 1996年第3期15卷 377-396页

作者： Qiu Dahong and Yang Gang (Department of Civil Engineering.Dalian University of TechnolOgy, Dalian 116023, China) Department of Civil Engineering Dalian University of Technology Dalian 116023 China

In this paper, the irregular wave-induced seepage action on cylinders resting on rubble mound foundatoin (RMF) is studied by means of finite element method (FEM). The hydraulic resistance inside RMF is assumed to satisfy the nonlinear Forchheimer's equation and the seepage in the scabed is also considered. Model tests show good agreementwith the numerical results. The influence of several main parameters is discussed on the basis of vast calculations. In addition, the ratio of seepage forces, induced by regular and irregular waves respectively, is analyzed and thus a computaional method is put forward for practical engineering application to simplify the calculation of irregular wave-induced seepage forces.

关键词： Wave-induced seepage forces irregular wave rubble mound foundation

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