A Predictive model for maximum interstory drift ratio (MIDR) and its implementation in probability-based design and performance assessment procedures g

Eroğlu Azak, Tuba
Estimating nonlinear deformation demands is important for the implementation of rational seismic design and assessment methodologies to ensure the safe and reliable response of existing and new buildings against seismic action. The nonlinear deformation demand estimations should consider the variability inground motions as well as the uncertainties involved in structural response. This study presents probability-based seismic design and assessment procedures for code-confirming low- and mid-rise reinforced concrete Turkish buildings. The proposed methodologies account for the regional seismicity, randomness in earthquake ground motions and uncertainty in nonlinear structural response while estimating the maximum interstory drift ratio (MIDR) demands on frame type buildings. The buildings of interest have story numbers ranging between 3 and 9 stories with fundamental periods (T1) ranging from 0.7s to 1.4s. The proposed methodologies are based on probabilistic seismic demand analysis (PSDA) that uses structure-specific predictive models. Thus, a predictive model on MIDR is also presented within the context of this study. The MIDR predictive model is a function of moment magnitude (Mw), source-to-site distance (Joyner-Boore distance, Rjb), site conditions (soft and stiff sites with average shear-wave velocities ranging between 180 m/s and 760 m/s in the upper 30 m of the soil profile) and strength reduction factor (Ry). The proposed probability-based methodologies can be used together with the current force-based design (FBD) and hybrid seismic performance assessment procedures to improve their efficiency for the expected behavior of structural response under target hazard demands.


Assessment of nonlinear static (pushover) analysis procedures using field experience
Dilsiz, Abdullah; Gülkan, Polat; Yakut, Ahmet; Department of Civil Engineering (2013)
Recently, many nonlinear analysis procedures have been proposed for earthquake response determination of the structures. Although, the nonlinear response history analysis (NRHA) is accepted as the most accurate source of information for nonlinear seismic response, nonlinear static procedures (NSP) may also provide reasonable estimates of seismic demand and inelastic behavior. However, all proposed NSPs have limitations, due to the certain approximations and simplifications, such as invariable load pattern a...
Linear modal combination procedure for structural dynamics
Tanışer, Sadun; Sucuoğlu, Haluk; Department of Civil Engineering (2013)
Earthquake engineering practice utilizes different analysis procedures in the estimation of seismic demands on structures. These procedures are mainly divided into two groups as static and dynamic procedures. Dynamic procedures are more accurate than the static procedures since they include the entire history of any response parameter during the ground motion. Nevertheless, there are also approximate but much simpler static analysis procedures that overcome high computational demands and inherent difficulti...
A simplified non-linear procedure for buildings with shear walls
TEKELİ, Hamide; Atimtay, Ergin (Thomas Telford Ltd., 2015-01-01)
A simple and easily applicable analytical method is proposed to obtain the capacity curve of buildings with shear walls as the first stage of a seismic pushover analysis. The method is based on controlling the curvature distribution of shear walls. Accuracy of the method was examined based on data of three sample buildings compiled from the literature. The buildings have different floor areas, number of storeys and cross-sectional areas of shear walls. The method can be economically used with respect to bot...
A Methodology for Seismic Loss Estimation in Urban Regions Based on Ground-Motion Simulations
Ugurhan, Beliz; Askan Gündoğan, Ayşegül; Erberik, Murat Altuğ (2011-04-01)
Seismic vulnerability assessment of residential buildings in regions of high seismicity is an interdisciplinary problem requiring major inputs from fields of seismology and earthquake engineering. The basic two components of loss estimation methods are information on regional seismicity and building stock. This study presents a realistic loss estimation methodology where the first component, input ground motions, is obtained from regional ground-motion simulations using the stochastic finite-fault technique...
A drift capacity prediction model for retrofitted reinforced concrete columns
ÖZCAN, OKAN; Binici, Barış (2022-03-01)
Seismic assessment of reinforced concrete (RC) buildings heavily relies on the deformation capacity predictions of members. Similarly, the prediction of the deformation capacity of retrofitted RC columns has the utmost importance for seismic retrofit design. In this paper, a new unified drift model is proposed in order to estimate the rotation capacity of RC columns retrofitted with concrete jacketing, steel jacketing and fibre-reinforced polymer (FRP) wrapping. In order to generate the model, an extensive ...
Citation Formats
T. Eroğlu Azak, “A Predictive model for maximum interstory drift ratio (MIDR) and its implementation in probability-based design and performance assessment procedures g,” Ph.D. - Doctoral Program, Middle East Technical University, 2013.