One of the steel girders of a crane bridge has arectangular box section 750mm deep and 375mm wideoverall. The flange plates of the box are 30mm thick andthe web plates are 15mm thick. The effective span is 12mand the ends of the girders are simply supported butprevented from rotating about the longitudinal axis.The girder carries three wheels spaced 1.5m apart whichcan move along the length of the girder within the limitsshown in Figure 1. Each wheel transmits a vertical force of240 kN and a horizontal transverse force of 80 kN, bothapplied at a point 530mm vertically above the centroid ofthe section.(a) Calculate the maximum shear stress that occurs due totorsion alone, and also the maximum possible angle oftwist.(b) Determine the maximum shear stress in the web of thebox due to the combined effects of torsion and beamshear force.For the box section Ixx is 373,730 cm4 and lyy is 93,430cm4. For steel G is 80 kN/mm2.0.5m0.5mW WW1.5m 1.5m530mm12mW-240 kNH-80 kNFigure 1

One of the steel girders of a crane bridge has a ectangular box section 750mm deep and 375mm wide verall. The flange plates of the box are 30mm thick and he web plates are 15mm thick. The effective span is 12m nd the ends of the girders are simply supported but revented from rotating about the longitudinal axis. The girder carries three wheels spaced 1.5m apart which

One of the steel girders of a crane bridge has a ectangular box section 750mm deep and 375mm wide verall. The flange plates of the box are 30mm thick and he web plates are 15mm thick. The effective span is 12m nd the ends of the girders are simply supported but revented from rotating about the longitudinal axis. The girder carries three wheels spaced 1.5m apart which

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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