In-Plane Internal Forces in Reinforced Concrete Diaphragms Subjected to Seismic Forces

Research Area: Volume 5,Issue 2, March 2016 Year: 2016
Type of Publication: Article Keywords: Diaphragms, Collectors, Slabs, Beams, SAP2000
  • Ibrahim Mohammad Arman
Journal: IJEIR Volume: 5
Number: 2 Pages: 185-191
Month: March
ISSN: 2277-5668
This paper focuses on internal membrane forces in reinforced concrete slabs that form diaphragms to transmit horizontal forces like seismic loads to vertical elements like columns and walls. It is found that considerable axial forces exist in the slab near columns in flat plate systems supported by columns and larger axial forces exist in slabs and their beams along walls lines in slabs supported by walls, where horizontal forces are resisted by the walls. These internal forces especially tension must be considered in the design of the slabs and the beams. This issue should be taken into account in using computer softwares which do not design slabs and beams for axial forces.

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