薄壁楔形构件单元刚度矩阵

The Element Striff Matrix of Thin-Wall Tapered Member

利用近似截面惯性矩代替楔形杆的实际惯性矩，从而可直接得到楔形构件的单元刚度矩阵，便于计算带楔形构件的刚架的内力．

In this paper an approximate moment of inertia is used to take over the real value of tapered member,so as to avoid the dis -advantageous factors of taperednmember.With the approximate moments of inertia the stiff matrix of tapered member is obtained .It is very easy to calculate the internal forces of frame with tapered members.