连续梁的杆端转动刚度及其在力矩分配法中的应用

Bar - end Rotation Stiffness of Continuous Beam and its Application in Moment Distribution Method

提出以多跨连续梁为单元参与力矩分配法的设想,导出了任意跨连续梁的杆端转动刚度和结点处弯矩传递系数的递推计算式,使得设想能够实施．改变了传统力矩分配法的渐近解法, 只需一次性分配就可求得精确解．

The paper introduces an idea that taking a multi - span continuous beam as a distribution element joins in the moment distribution method, and recurrence formula which the bar - end rotation stiffness of arbitraryspan continuous beam and carry - over coefficient of joint moment is derived, so the idea can be put in practice. It changes the traditional moment distribution method from a gradually approximate method to an exact method, only carrying through one - off distribution.