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Determination of the Critical Value of Deflection for Embedded Cylindrical Structures
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作者 刘建起 陈滨 王海艳 《China Ocean Engineering》 SCIE EI 2005年第3期519-528,共10页
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 g... 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. 展开更多
关键词 deflection of cylinder critical value of deflection effective anti-overturning ratio moment of thrust calculation of deflection
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沉入式圆筒结构变位临界值及变位计算 被引量:1
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作者 刘建起 左大伟 王敬莎 《天津大学学报》 EI CAS CSCD 北大核心 2006年第2期170-175,共6页
为探讨沉入式圆筒结构的变位临界值及其变位计算方法,采用模型试验实测圆筒结构变位值,分析圆筒转角θ与抗倾有效比η和推力矩MH间的关系,并推导了圆筒变位计算公式.试验研究表明,当转角θ≤0.2°时抗倾有效比η逐渐增大,并在θ≈... 为探讨沉入式圆筒结构的变位临界值及其变位计算方法,采用模型试验实测圆筒结构变位值,分析圆筒转角θ与抗倾有效比η和推力矩MH间的关系,并推导了圆筒变位计算公式.试验研究表明,当转角θ≤0.2°时抗倾有效比η逐渐增大,并在θ≈0.2°时达到最大,此时圆筒抗倾能力最强;而转角θ>0.2°时,η和圆筒抗倾能力都明显减小.据此提出圆筒变位临界值θ=0.2°,此时,由转角θ产生的筒顶水平变位△1与筒高H之比为3.5×10-3. 展开更多
关键词 圆筒变位 变位临界值 变位计算 抗倾有效比 推力矩
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