最后证明了：系统可用动态状态反馈解耦，也可通过拟静态状态反馈进行解耦。
Moreover, we prove that if the disturbance decoupling problem is solvable by a dynamic state feedback, then it is solvable by a quasi static feedback.
首先，采用伽辽金加权余量法推导有限元平衡方程，利用罚方法得到求解拟静态问题的罚有限元公式。
First, the penalty finite element balance equation for quasi-static problem is obtained by the application of Galerkin weighted residual method and the introduction of penalty parameter.
在水平拟静态荷载作用下，分析了土体的非线性，桩土之间接触面的分离，桩的长宽比等因素，对单桩横向响应的重要影响。
In static loads, the significant effect of the nonlinear soil behavior, the pile-soil interface separation, and the pile slenderness and width on the response of a single pile are analyzed.
在水平拟静态荷载作用下，分析了土体的非线性，桩土之间接触面的分离，桩的长宽比等因素，对单桩横向响应的重要影响。
In static loads, the significant effect of the nonlinear soil behavior, the pile-soil interface separation, and the pile slenderness and width on the response of a single pile are analyzed.
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