The frequencies and vibration modes of structures are analyzed with pulsating method and structural stiffness is identified with modified simplex method, which is presented by authors.
应用脉动法测到的信号分析结构的固有频率和振型，利用作者提出的改进的单纯形法来识别结构刚度。
The modified fatigue stiffness calculation of corroded reinforcement concrete beams was introduced in this study.
在实验基础上，本文提出了锈蚀钢筋混凝土梁疲劳刚度修正计算公式。
The soil reaction matrix is added to beam element stiffness matrix, and modified beam element stiffness matrix is formed.
将土反力矩阵与梁单元刚度矩阵迭加，形成修正的梁单元刚度矩阵；
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