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Lecture 4: The Force Method ~ Frames

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Lecture 4: The Force Method ~ Frames Powered By Docstoc
					   Analysis of Statically Indeterminate
Structures by the Force Method: Frames
            By Dr. Alberto Guzmán
Force Method on Frames
• Force method very useful for solving statically indeterminate
  frames problems with a single story and unusual geometry.
• For problems involving multistory frames, or those with high
  degree of indeterminacy, are best solved with slope-
  deflection, moment distribution or stiffness method.

Method of Virtual Work
                     1. ∆	=



                      1.   =
Force Method on Frames: Examples

• Determine the support reactions on the frame shown. Take EI
  constant.




                         20KN



                                2m

				
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posted:8/18/2011
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