Dynamic modeling and response of rigid embedded cylinders
Dynamic modeling and response of rigid embedded cylinders
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刚性嵌入式圆柱体的动态建模和响应
DOI：
10.1061/(asce)0733-9399(1995)121:9(1026
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发表时间：
1995
期刊：
影响因子：
--
通讯作者：
A. Younan
中科院分区：
文献类型：
--
作者：
A. Veletsos;A. Younan
在简要回顾了一种流行的技术的局限性建模的土壤作用在深埋圆柱形基础和结构的动态响应分析，确定了限制的来源，并提出了修改，同时保留了原有模型的吸引力，正确地定义了系统的行动。在所提出的方法中，土壤介质是由一系列的弹性约束，而不是无约束，薄的水平层与一个圆孔的中心。建立约束层的阻抗，然后用于评估的动态响应的刚性垂直圆柱体嵌入在一个均匀的粘弹性层的厚度恒定和无限的程度在水平方向上。假定圆柱体和地层支承在一个作匀速水平运动的不变形基底上。谐波和地震引起的地面运动的影响被认为是。The respo.
Following a brief review of the limitations of a popular technique for modeling the soil action in analyses of the dynamic response of deeply embedded cylindrical foundations and structures, the sources of the limitations are identified and a modification is proposed that, while retaining the attractiveness of the original model, defines correctly the action of the system. In the proposed approach, the soil medium is modeled by a series of elastically constrained, rather than unconstrained, thin horizontal layers with a circular hole at the center. The impedances of the constrained layers are established and are then used to evaluate the dynamic response of a rigid vertical cylinder embedded in a uniform viscoelastic stratum of constant thickness and infinite extent in the horizontal direction. The cylinder and the stratum are presumed to be supported on a nondeformable base undergoing a uniform horizontal motion. The effects of both harmonic and earthquake-induced ground motions are considered. The respo...