1) partially saturated soil subgrade
部分饱和地基
1.
Based on the theory of elastic wave propagation in saturated soil subgrade established by the author of this paper, the axisymmetric vertical vibration of a rigid circular foundation resting on partially saturated soil subgrade which is composed of a dry elastic layer and a saturated substratum is studied.
运用作者提出的饱和土弹性波动方程 ,从理论上研究了上覆单相弹性土层的饱和地基上刚性基础的竖向振动轴对称问题 ,即采用Hankel积分变换技术并按混合边值条件建立了部分饱和地基上刚性基础竖向振动的对偶积分方程 ,并将其蜕化为完全饱和地基的情形 ;该对偶积分方程可化为易于数值计算的第二类Fredholm积分方程· 文末的算例给出了地基表面动力柔度系数 Cv随无量纲频率a0 的变化曲
2) partial saturation
部分饱和
3) saturated soil ground
饱和地基
1.
Dispersion of Rayleigh wave in a saturated soil ground;
饱和地基中瑞利波的弥散特性
4) saturated soil
饱和地基
1.
Torsional vibrations of a rigid cylindrical foundation partially embedded in transversely isotropic saturated soil;
横观各向同性饱和地基中埋置刚性圆柱基础的扭转振动
2.
Vertical vibration of rigid foundation embedded in saturated soil
埋置于饱和地基中刚性基础的竖向振动
3.
Considering the interaction between the soil and the side of the foundation,the dynamic response of a rigid cylindrical massive foundation embedded in saturated soil under vertical time-harmonic excitations is investigated based on Biot′s dynamic equations.
运用Biot动力方程,考虑基础侧面和地基的相互作用,研究埋置于饱和地基中有质量的刚性圆柱基础在竖向简谐激振力作用下的动力响应问题。
5) saturated soils
饱和地基
1.
Vertical vibration analysis of transversely isotropic saturated soils with elastic superstratum;
上覆弹性土层横观各向同性饱和地基竖向振动分析
2.
Dynamic Green s functions of saturated soils subjected to the internal excitation;
饱和地基中埋置点源荷载的动力Green函数
3.
Based on the saturated porous medium’s theory,the inertia force of both the soil and the water is considered;the stable vibration problem of transversely isotropic saturated soils is studied.
基于饱和地基多孔介质理论,考虑了水土的惯性及耦合作用,研究了横观各向同性饱和地基的稳态振动问题。
6) saturated ground
饱和地基
1.
The rocking vibration of a flexible circular plate with rigid core resting on saturated ground is studied.
基于饱和土弹性波动方程,研究了饱和地基上含刚核弹性圆板在摇摆谐和力矩作用下的振动特性。
2.
A study of the vertical vibration of a flexible plate with rigid core resting on saturated ground is presented in this paper.
基于作者提出的饱和土弹性波动方程，研究了饱和地基上含刚核弹性圆板在竖向集中谐 和力作用下的振动特性。
3.
On the basis of the existing work, the rocking vibrations of foundations resting on saturated grounds are studied analytically in details .
对于刚性圆板,作者首先采用Hankel变换对波动方程进行求解,得到了该控制方程在Hankel变换域内的通解,然后由混合边值条件建立了饱和地基上刚性基础摇摆振动的对偶积分方程,并将其化为第二类Fredholm积分方程,用数值方法计算了不同频率下基础的动力柔度系数,从而考察孔隙水的存在对基础摇摆振动特性的影响。
补充资料：部分饱和序列
部分饱和序列
磁共振成像术语。也称部分饱和恢复序列(partial saturation recovery sequence)。磁共振成像中，间隔一段重复时间(TR)后重复施加90°射频脉冲的序列。第一次90°脉冲后把纵向磁化矢量(Mz)翻转到XY平面上，Mz消失。经过给定的TR后Mz部分恢复，再施加第二个90°射频脉冲，又将Mz翻转到XY平面上。此时的Mz即为给定的TR内纵向弛豫(Mz)的恢复量。这样，在一定的时间范围内重复，Mz随重复时间(TR)的延长呈指数性增长。这种增长主要依赖于T1弛豫和质子密度。用该序列所获的图像为T1加权或质子密度加权像。TR一般应大于T2而小于T1。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条