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flyinghigh
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United States - Member - New Member

Join Date: May 2008
Location: Arizona
Posts: 355
Good Answers: 4

Horizontal Displacement of Dome Ring Beam

04/02/2010 12:13 PM

If the horizontal displacement of a steel reinforced dome ring beam is a function of 1/E, could you make a case for the E of the composite beam (Ecomp) being found thus: As * Es + Ac * Ec = Acomp * Ecomp, where As = Area of steel, Es = Modulus of Elasticity of steel, etc.?
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passingtongreen
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Join Date: Aug 2009
Location: Glen Mills, PA.
Posts: 2385
Good Answers: 114
#1

Re: Horizontal displacement of dome ring beam.

04/02/2010 5:26 PM

No. If the ring beam is in tension, you disregard the concrete, it is almost certainly cracked and useless in tension. If it is in compression, both materials will be strained by the same amount. Since Es is greater than Ec, the area of steel is multiplied by the ratio to obtain a transformed area. Transformed Ac= Ac + As*Es/Ec.

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