A Graphical Method for Swing-bridges: A Rational and Easy Graphical Analysis of the Stresses in Ordinary Swing-bridgesVan Nostrand, 1892 - 104 стор. |
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abutment allel amount analysis arm fully loaded B-A and B-C bending moment bridge center panel chord stresses closed polygon cloth compression condition of loading consider the joint continuous girder convenient scale dead dead-load stresses draw equal spans equation equilibrium polygon external forces figure force in C-A force polygon forces acting forces which meet frame Funicular George McGowan given graphical statics Hand-book ical illus Illustrated independent span latched latter left arm lines representing load curve load line load stresses lower chord Majolica maxima stresses negative reaction obtained one-half panel live opposite direction ordinates outer end panel lengths panel live load panel load panel point parallel pier moment pier reaction point of contraflexure portion principles represent the stresses retrace right arm shown in Fig stress diagram stress in bC stress with reference stresses act swing-bridges table of coefficients tabulated tension tion top chord traflexure truss upper chord vertical writer
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Сторінка 9 - If any number of forces acting at a point can be represented in magnitude and direction by the sides of a POLYGON taken in order, they are in equilibrium.
Сторінка 24 - This plan of lettering consists in assigning a particular letter to each c-nclosed area or space in, and also to each space (enclosed or not) around or bounding the truss, and attaching the same letter to the angle or point of concourse of lines which represents the area in the diagram of forces. Any linear part of the truss or any line of action of an external force applied to it is to be named from the two letters belonging to...
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