随着阻尼、地基系数的改变，系统响应曲线具有“类软刚度特征”。随着参数激励幅值的改变，系统响应曲线具有“类硬刚度特征”。
The characteristic due to hard or soft stiffness may be altered as the parameters of damping, foundation, and excitation on the system are varied.
以土层分层、支撑位置及抗弯刚度变化处等为结点对围护墙体进行单元划分，按地基系数法考虑开挖面下被动土体横向抗力。
In this paper, the retaining wall is divided into finite elements according to the layers of soil, rigidity change of retaining wall, elevations of bracing and so on.
以土层分层、支撑位置及抗弯刚度变化处等为结点对围护墙体进行单元划分，按地基系数法考虑开挖面下被动土体横向抗力。
In this paper, the retaining wall is divided into finite elements according to the layers of soil, rigidity change of retaining wall, elevations of bracing and so on.
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