【摘要】 本文采用横观各向同性层状粘弹性模型模拟半空间之上的层状场地,用阻尼器取代其下部的半空间以吸收振动能量。在求解该场地对环形简谐荷载的响应时,采用薄层元素法导出满足上述边界条件的离散化后的自由振动方程,利用与Kausel等人的正交条件对应的求规格化特征向量的方法,给出了有关系数的计算公式。最后给出了横观各向同性层状场地对环形简谐荷载响应的一般形式。更多还原

【Abstract】 A model of transversely isotropic viscoelastic layered strata is used to simulate the soil layers situated on a half space. At the bottom of the strata, dampers are used to absorb the vibration energy. The thin layer element method is used to derive the discretized free vibration equation, which satisfies above boundary conditions. By using the method of solving normalization eigenvector, which corresponds with Kausel’ 5 orthogonal conditions, the expressions of relevant coefficients are given. And at last, the general formulas of displacement responses of transversely isotropic elastic strata to harmonic ring loads are preserted.更多还原