BEHAVIOR OF REINFORCED CONCRETE BEAMS WITH OPENINGS IN THE SHEAR ZONE

سال انتشار: 1388
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 2,011

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شناسه ملی سند علمی:

ICCT01_016

تاریخ نمایه سازی: 19 شهریور 1388

چکیده مقاله:

This paper presents results of nonlinear finite element analyses of reinforced concrete beams, with and without openings using ANSYS. The results are used to study the effect of the presence of rectangular openings in the shear span of reinforced concrete beams. Effects of both opening size and its distance from support are investigated. It is shown that opening presence reduces beam strength and increases its deflection and crack intensity. It is also shown that these opening effects become more pronounced as the opening size increases or as the opening becomes closer to the support. Four alternative methods to enhance the beam strength and stiffness were studied: using extra stirrups; addingdiagonal bars around opening; increasing section breadth in opening zone; and using intense (closely-spaced) stirrups at opening ends. The suggested enhancement solutions improved the beam behavior and partially regained the strength and stiffness of the original beams (i.e. beams without openings).

نویسندگان

OSMAN M. Ramadan

Faculty of Engineering/Cairo University

AHMED M. SALEH

Faculty of Engineering/Cairo University

ABDULKAREEM Y. AL-KHATTABI

Faculty of Engineering/Cairo University

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