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- 저자 : Abdul Khalim Bin Abdul Rashid (검색결과 1 건)
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Formulation for Free-standing Staircase
Saeid Zahedi Vahid,Mohammad Ali Sadeghian,Siti Aminah Bt. Osman,Abdul Khalim Bin Abdul Rashid 대한토목학회 2015 KSCE JOURNAL OF CIVIL ENGINEERING Vol.19 No.6
In the analysis of a free-standing staircase with slab elements, approximate analytical methods are sometimes used because of the absence of specific code provisions due to their inherent limitations. These approaches, however, cannot predict the actual threedimensional (3D) behavior of the stair slab system. In addition, analytical methods cannot predict the stress resultant distribution in any section. These drawbacks highlight the need for the development of more rational but simple analysis methods for design purposes. Thus, in this study, an extensive numerical study on the behavior of free-standing staircases was performed using the finite element package SAP2000. A sensitivity study on the different geometric parameters and material properties that affect the design force and moments was also conducted. As a result of this study, semi-empirical equations are proposed from which the design forces and moments can be calculated in a single step. The accuracy of the equations within an acceptable limit is established by comparison with the results of rigorous FE analyses. Finally, the proposed design equations lead to a simple, straightforward and safe design while simultaneously representing the true behavior of 3D free-standing stair slabs.
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