In this paper,the equation of five moments of comtinuous beam with step cross section on the elastic support under the action of arbitrary loads is introduced,and this equation is checked with the practical example.

It is also the first time to present the way to analysis the force in limit case effect on the marine pipelines during float towing with the help of five-movement equation,and deve.

In this paper,the equation of three moments of continuous Beam of variable Cross Section under the action of arbitrary loads is advanced.

The theoretic studies of the traditional three-moment equation were carried throug h in three respects by taking the additive moment, uniform load and shear deform ation of the shafting int.

The three-moment equation is derived for the plane statically indeterminate stiff jointed frame with tWo intersecting bars at stiff joint and without linear displacement, and some examples are given to show the advantage of using this equation to calculate the frame above mentioned.

This paper presents the dynamic alignment calculation of Controllable-Pitch Propeller(CPP) propulsion shafting based on the improved three-moment equation.

Based on a set of standard solutions to the moment equations for a singly spanned rectangular plate, a general method is presented to derive the three moment equation for a continuous rectangular plate with two simply supported opposite edges on an elastic foundation.