SEISMIC PERFORMANCE ASSESSMENT OF CONFINED MASONRY BUILDINGS


Thesis Type: Post Graduate

Institution Of The Thesis: Orta Doğu Teknik Üniversitesi, Faculty of Engineering, Department of Civil Engineering, Turkey

Approval Date: 2016

Student: CİHAN ÇİTİLOĞLU

Consultant: MURAT ALTUĞ ERBERİK

Abstract:

Although it is a known fact that confined masonry construction has many advantages over unreinforced masonry construction, its application has been very limited in Turkish construction practice. One of the reasons for this issue is that the seismic regulations in Turkey do not explicitly enforce or even encourage the use of confined masonry structural systems. Now, being on the verge of releasing a new version of the Turkish seismic code, it seems to be an appropriate time to adapt confined ma-sonry to the Turkish construction practice. This study intents to reveal why such at-tempts are necessary by comparing the behaviour of unreinforced and confined ma-sonry on the building scale. In the first phase of the study, standards for unreinforced masonry and confined ma-sonry buildings around the world are given. Studies regarding unreinforced and con-fined masonry walls are summarized. Idealized tri-linear capacity curves are used to define the wall capacities and pushover analysis is performed to find the storey shear capacities of the critical storey of each model following the theory of Tomazevic. 6 different floor plans are designed as unreinforced masonry and confined masonry buildings with changing geometrical and mechanical properties. Demand is repre-sented by ten real ground motion records of changing PGA values. Capacity spec-trum method of FEMA 440 is used to carry out the performance analysis of build-ings. The results of the performance analysis reveal the superior behaviour of con-fined masonry buildings over unreinforced masonry buildings against the seismic action.