ارزیابی مقاومت و شکل پذیری ساختمانهای بتن مسلح کوتاه
نویسنده
چکیده
واژگان کلیدی : مقاومت، شکلپذیری، مکانیزم شکست، ساختمانهای بتن مسلح کوتاه
کلیدواژهها
عنوان مقاله [English]
Siesmic Assessment og Ductility and Strength Capacities of Low-Rise R. C. Buildings
نویسنده [English]
- F. Nateghi-A and N.A. Hosseinzadeh
This paper presents a methodology for the assessment of ductility and strength capacities in low-rise buildings. This method utilizes the characteristics of force-displacement for the lowest story level or considers the weakest story in any given low-rise building for its primary analysis. Calculations are based on two levels of earthquake motions, namely strong earthquakes (PGA=0.3 g), and very strong earthquakes (PGA=0.45). Failure mechanism for the structure is established based on three criteria which are: a) bending mode, b) shear mode, and c) shear-bending mode. Evaluation is then performed using a five step procedure starting with a: modeling the building, b) developing the non-linear properties of the model, c) strength calculations, d) ductility calculations, and finally, e) assessing the safety of the building under consideration. All these evaluations are performed based on a matrix format, which simplifies the whole procedure. Developed equations and step-by-step procedure are presented and described in this paper Satisfactory results are obtained from the use of the method developed.
Keywords: Strength, Ductility, Failure mechanism, Low-Rise R. C. Buildings
کلیدواژهها [English]
- Strength
- Ductility
- Failure mechanism
- Low-Rise R. C. Buildings
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