IntroductionPlanksJoists6
Introduction 6
IntroductionzhntoucomOriginal GridDeformed Grid
Introduction 7
Introduction1600N/m900N/m1400mmc)1.0m2.6m2.6m-350mmBR←8
Introduction 8
IntroductionCompressionFreeBodyDiagram,leftpartRTensioncut hereEnlargedViewofStresses9
Introduction 9
The Form of Internal Forces in Beams. Internal forces onBCcross-sections ofbending beams11AOmCFBBmAmMThe internal forces on cross-sectionFsm-m can be simplified as shearingmforces and bending moments atFmBcross-sectional centroidMBFSm10
• Internal forces on cross-sections of bending beams m m F A B FS m m A M FA m m F B FS M FB The internal forces on cross-section m-m can be simplified as shearing forces and bending moments at cross-sectional centroid. The Form of Internal Forces in Beams 10