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No.2 (1969/04) >

 
Title :モーメント分配法による非矩形ラーメンの解法
Title alternative :A Method of Analysis for Non-rectangular Rigid Frames by Means of Moment Distribution
Authors :具志, 幸昌
Authors alternative :Gushi, Yukimasa
Issue Date :Apr-1969
Abstract :This method is a kind of moment distribution methods. In an analysis of a non-rectangular rigid frame by the ordinary method of moment distribution, there must be needed to provide temporary support reactions and enforcing displacement forces. But in this method, none of these forces are needed. This method involves two main processes which are called “distribution process” and “allotment process” respectively, the former is utilized in ordinary method of moment distriblltion which satisfies the moment equations at joints, While the latter is a new concept which satisfies shear equations of the slope-deflection method. The “allotment process” is the process enforcing a kind of deformation of frames in which only one independent member rotation angle occures, while the others are kept zero and every joint rotation is fixed. End moments in this process necessarily satisfy corresponding shear equation of the slope deflection method. These end moments can be calculated from the storey moments muliplied by “allotments coefficients.” The storey moments is the minus-signed work done by the loads applied on the frames in the shear eruation, which is virtual work equation of load-and-end-moment system of the frame when only one independent member rotation angle can occure and its value is unit quantity but the others are zero. The “allotment coefficient” is the ratio of the allotment moment(end moment)to the storey moment when only one independent member rotation occure and the others and all joint rotation are kept zero. A member of the rigid frame can have several alltoment coefficients each of of which oorresponds each independent member rotation angle. This method consists in altertive application of distribution process and allotment process. Then moment equations and shear equations in the slope deflection method are iteraly and one by one satisfied approximately. So after several applications, we can get exact solution.
Type Local :紀要論文
ISSN :0387-429X
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/23810
Citation :琉球大学理工学部紀要. 工学篇 = Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering no.2 p.27 -51
Appears in Collections:No.2 (1969/04)

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