The stiffness matrix of semi-rigid steel frames and the fixed end moment are deduced, based on the connection element method incorporating the effects of joint flexibility.
采用连接单元法，考虑连接柔性的影响，推导出半刚性框架梁柱的刚度矩阵及半刚性梁的固端弯矩。
The fixed and variable elements of semi-variable costs can be determined by the high-low method .
在半变动成本中固定和变动的因素（成本）可以通过高低点法进行计算（测算）。
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