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General Properties and Seismic Performance of High Risk Buildings in
Our Country

the age, soil condition and number of floors of the building. It is also possible
to calculate the approximate cost for reinforcement through analyses to be
performed at this stage.

Conclusions

Considering the performance of the building stock in our country in the
past earthquakes, it has been seen that our RC building stock especially
before 2000 has a high earthquake risk. The main reasons that lead to
the inadequate behavior of our RC buildings built before 2000 can be
addressed in three topics; structural deficiencies, regulatory deficiencies,
insufficient labor and materials. the building constructed with poor materials,
workmanship and detailing which are the result of inadequate supervision, in
particular, is not in compliance with its project and relevant regulations. As a
result, contrary to the predicted and expected behavior in the design of the
structure, our buildings exhibit poor performance. It is necessary to reduce
the risk by identifying and strengthening or regenerating these buildings,
which make up about 50 percent of the building stock in our country. A two-
stage approximate method has been proposed here for identifying the high
risk buildings, which are quite a lot in number. It is possible to regenerate or
strengthen the high risk buildings by applying this approach which is fast,
practical and cost-effective. In this scope, attractive residential areas as well as
the cost-effective structural systems to be designed with the new technology
can be developed for the buildings to be regenerated. It is possible to apply
cost-effective and practical reinforcement techniques in order to pave the
way for reinforcement. It is proposed that reinforcement techniques that can
be applied without making the residents leave the building (such as adding
external shear wall and confining the columns with carbon fiber) can play an
important role in reducing the earthquake risks.

References

ABYBHY (1998). Regulations on the Structures to be Built in Disaster Areas, Ministry
of Public Works and Settlement, Ankara, Türkiye.

ABYBHY (2007). Regulations on the Structures to be Built in Disaster Areas, Ministry
of Public Works and Settlement, Ankara, Türkiye.

Bayraktar, A., Altunisik, AC. Türker, T. Karadeniz, H. Erdogdu, S, Angin, Z. Özsahin,
TS. (2015). “Structural Performance Evaluation of 90 RC Buildings Collapsed during
the 2011 Van, Türkiye”, Earthquakes, Journal of Performance of Constructed
Facilities, Issue: 29(6): Year: 2015. 401-417.

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