Determination of the Critical Value of Deflection for Embedded Cylindrical Structures  

作　　者：刘建起 陈滨 王海艳 

机构地区：[1]Department of Port Engineering, School of Civil Engineering, Tianjin University, Tianjin 300072, China

出　　处：《China Ocean Engineering》2005年第3期519-528,共10页中国海洋工程（英文版）

基　　金：Thisprojectwassupportedbythe9thNationalFiveYearProgramofChina(GrantNo.964150301)

摘　　要：An embedded cylinder is a large-diameter cylinder embedded in a soil foundation. The state of failure of such an embedded cylindrical structure shows large deflection instead of slide and overturn of the traditional gravity type of structure placed on a rubble base or foundation base. The critical value of deflection of the embedded cylindrical structure, which is the maximum allowable deflection for stability calculation of the cylinder, is a vital control value. Through investigation on deflection and soil pressures on an embedded cylinder by model experiments, the variations of the angle of rotation θ of a cylinder with effective anti-overturning ratio η and moment MH of thrust are discussed. On the basis of experimental study, the critical value of deflection of the cylindrical structure is proposed in the paper. Meanwhile, the formulas for calculating deflection of cylinders are derived.An embedded cylinder is a large-diameter cylinder embedded in a soil foundation. The state of failure of such an embedded cylindrical structure shows large deflection instead of slide and overturn of the traditional gravity type of structure placed on a rubble base or foundation base. The critical value of deflection of the embedded cylindrical structure, which is the maximum allowable deflection for stability calculation of the cylinder, is a vital control value. Through investigation on deflection and soil pressures on an embedded cylinder by model experiments, the variations of the angle of rotation θ of a cylinder with effective anti-overturning ratio η and moment MH of thrust are discussed. On the basis of experimental study, the critical value of deflection of the cylindrical structure is proposed in the paper. Meanwhile, the formulas for calculating deflection of cylinders are derived.

关 键 词：deflection of cylinder critical value of deflection effective anti-overturning ratio moment of thrust calculation of deflection 

分 类 号：TU470[建筑科学—结构工程]