SEISMIC PERFORMANCE OF A RC SCHOOL BUILDING CONSIDERING DIFFERENT SOIL CLASSES

Yıl 2017, Sayı: 1, 146 - 153, 09.11.2017

Murat Dogru Guray Arslan

Öz

Occurrence of
major material damage and loss of lives due to earthquakes in our country show
that the earthquake safety of existing building stock is not enough. It is
important of great importance to determine seismic performance of existing
buildings. However, some building types have great importance such as school
buildings, hospitals etc. A reliable performance estimation is very important
to achieve seismic safety of this type of buildings. Seismic performance of a
building depends on not only its behavior but also the soil class on which it
is constructed.

 

In this study, performance estimation of an existing RC school buildings
has been conducted considering different soil types. The aim of this study is
to determine the seismic behavior of school type RC buildings considering
different soil classes. For this purpose, a five-story reinforced concrete (RC)
school building was selected to evaluate the seismic performance and this
building designed according to Turkish Seismic Code (TSC) 1975. The seismic
performance of the existing building is estimated according to TSC 2007 using
Nonlinear Static Procedure (NSP) considering different soil classes as A, B, C
and D. NSP is also referred to as Pushover Analysis Method. Pushover curve is
transformed to modal capacity diagram and the inelastic displacement demand of
the building is estimated by intersecting the modal capacity diagram and the
behavior spectrum, which is estimated by transforming the design spectrum given
in TSC 2007. Soil class is considered by changing the corner periods of design
spectrum. Thus, performance level is estimated for the design earthquake by
using the design spectrum.

Anahtar Kelimeler

Seismic performance, reinforced concrete, pushover analysis, soil class

Kaynakça

• ATC, (1996). Seismic Evaluation and Retrofit of Concrete Buildings, Applied Technology Council, Redwood City, California. Gülkan, P., Sözen, M. (1974). Inelastic Response of Reinforced Concrete Structures to Earthquake Motions. ACI Journal, pp. 604-610. Freeman, S. A. (1998). Development and Use of Capacity Spektrum Method, 6th US National Conference on Earthquake Engineering. SEAOC, (1999). Recommended Lateral Force Requirements and Commentary, 7th Ed. Fajfar, P. (2000). A Non-Linear Analysis Method for Performance-Based Seismic Design, Earthquake Spectra, pp. 573-592. Aschheim, M. A., Black, E. F. (2000). Yield Point Spectra for Seismic Design and Rehabilitation, Earthquake Spectra, pp. 317-336. UBC, (1997). Uniform Building Code, International Conference of Building Officials. SAP2000, (2017). Structural Analysis Program, Computers and Structures Inc. Berkeley, California. TSC, (2007). Turkish Seismic Code, Chamber Of Civil Engineering, Ankara.