Reliability and quantity based evaluation of structural proportions of several highway precast prestressed I girderbridges designed in an earthquake region

Toker, İldem
Bridges located in earthquake regions are generally designed with using force or displacement methods specified in American and European Codes which are AASHTO and Eurocode basically. Current vision for design purposes proposes that reliability analysis requirements determine the loads, load factors and load combinations by means of statistical approach. The significant uncertainty about earthquake load resulted in use of different design approaches per different specifications. Different design methods and specifications can yield to different material quantity and reliability results. Most of the bridge earthquake design is based on a commonly preferred method that is response spectrum analysis method. The aim of the study is to identify a relation between seismic design reliability and quantity of structural members since there is a limited research on this subject. In this scope, one hundred and sixty two different bridges are analysed for six different seismic cases using finite element analysis program SAP2000. The detailed design calculations are prepared for columns.


Reliability of transportation lifeline systems subjected to earthquake loads
Topkara Özcan, Naz; Yücemen, Mehmet Semih; Department of Civil Engineering (2016)
Lifelines, such as highway, gas, water and power distribution systems, are networks which extend spatially over large geographical regions. The assessment of the reliability of a lifeline under seismic loads requires particular attention, since the proper functioning of these systems during or after a destructive earthquake is very important. The main objective of this study is to investigate the system reliability of lifeline networks subjected to earthquake loads by concentrating on highway systems consis...
Comparison of ASCE/SEI standard (2010) and modal pushover based ground motion scaling procedures for pre-tensioned concrete bridges
Özgenoğlu, Müge; Arıcı, Yalın; Department of Civil Engineering (2015)
The seismic design and evaluation of large bridges is a demanding task owing to the significant size and the structural characteristics of these systems. Although elastic analysis methods are regarded as sufficient for common, uncritical bridges; complex analysis methods such as non-linear time history analysis (NTHA) are often required for non-standard and/or important bridges. The selection of the ground motions that will be used in non-linear time history analysis is a crucial task in this regard as the ...
Probabilistic seismic hazard assessment for earthquake induced landslides
Balal, Onur; Gülerce, Zeynep; Department of Civil Engineering (2013)
Earthquake-induced slope instability is one of the major sources of earthquake hazards in near fault regions. Simplified tools, such as Newmark’s Sliding Block (NSB) Analysis are widely used to represent the stability of a slope under earthquake shaking. The outcome of this analogy is the slope displacement where larger displacement values indicate higher seismic slope instability risk. Recent studies in the literature propose empirical models between the slope displacement and single or multiple ground mot...
Dynamic simulation of shaking table tests for a shearwall building having torsion
Nazırzadeh, Saeıdeh; Yakut, Ahmet; Department of Civil Engineering (2012)
Simulating the non-linear response of reinforced concrete (RC) buildings subjected to a sequence of input earthquake records, is an extremely complex concern in the field of the Earthquake Engineering. Buildings with no symmetry in plan have much more complicated behavior under earthquake effects than symmetric buildings. Torsional irregularity in plan is the main topic of many current researches. In previous decades, considerable amount of numerical and experimental studies have been conducted, but more re...
Comparison of mean site-specific response spectra in Turkey with the design spectra of AASHTO
Mestav Sarıca, Gizem; Askan Gündoğan, Ayşegül; Department of Civil Engineering (2014)
Seismic design of bridges is a significant problem for all seismically-active countries including Turkey which has gone through recent destructive earthquakes. Bridges are important elements of transportation and their robustness is important in the aftermath of major earthquakes. Turkish engineers currently employ a modified version of AASHTO (American Association of State Highway and Transportation Officials) LFD Design Specifications for bridge design. Within the scope of a national project (TÜBİTAK 110G...
Citation Formats
İ. Toker, “Reliability and quantity based evaluation of structural proportions of several highway precast prestressed I girderbridges designed in an earthquake region,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Civil Engineering., Middle East Technical University, 2019.