门式刚架半刚性端板连接的弯矩—转角曲线的数值方法研究

he end-plate connection form of portal frame is a typical kind of semi-rigid connection form. This paper selects the four parameter exponential model, which simulates the semi-rigid characteristic of the joint，carries on the three dimensional finite element model using the ANSYS finite element software to the end-plate connection, which considers the friction unit, carries on the nonlinear analysis under the function of the moment, and carries on the contrast with four parametric model formula, the result is quite consistent，which dictates that the numerical method is effective and reasonable, and has made the improvement to the four parameter exponential model formula.