Reliability of transportation lifeline systems subjected to earthquake loads

Download

index.pdf

Date

2016

Author

Topkara Özcan, Naz

Metadata

Show full item record

Item Usage Stats

159
views

67
downloads

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 consisting of viaducts, bridges, roads and highways. System reliability analysis basically evaluates the performance of a system in terms of the reliability of its components. Reliability of a structural component which is subjected to earthquake forces is determined based on the seismic capacity of the structure and earthquake loads on the structure. In this study, determination of the future earthquake threat on the components is calculated by performing a probabilistic seismic hazard analysis. Failure reasons of bridges and asphalt roads are explained and behaviors of these components under earthquake loads are discussed to determine the seismic capacity of them. In this respect, the system reliability concepts are utilized and bounds on the seismic reliability of a system are established. A case study based on real life data is also presented in order to illustrate the implementation of the method.

Subject Keywords

Highway engineering., Earthquake engineering., Earthquake hazard analysis., Lifeline earthquake engineering.

URI

http://etd.lib.metu.edu.tr/upload/12619858/index.pdf
https://hdl.handle.net/11511/25539

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

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...
Investigation of seismic isolation efficiency for building structures Özdemir, Seda; Yakut, Ahmet; Ay, Bekir Özer; Department of Earthquake Studies (2016) The main goal of this study is to assess the efﬁcacy of seismic isolation for building type of structures with different structural systems, namely, dual systems and moment frame systems having also different number of ﬂoors. Speciﬁc to this study, the main parameters employed for efﬁcacy assessment will be the interstorey drift ratio and ﬂoor acceleration since both structural and non-structural damage to be occured in a system are directly related to these two parameters. To assess the variations in inter...
Reliability of lifeline networks with multiple sources under seismic hazard Kestel, Sevtap Ayşe (2000-01-01) Lifelines are networks extending spatially over large areas. Transportation systems, pipelines, communication and power transmission systems are examples of lifelines. The performance of a lifeline after a major earthquake is particularly vital for a community because of the emergency services that are usually required after such events. Performance measures are usually expressed in terms of quantities that are assessed based on statistical and probabilistic methodologies. The major performance measure is t...
Multi-hazard reliability of electric power transmission networks with spatially correlated components Altay, Umut; Dener Akkaya, Ayşen.; Department of Statistics (2019) Many network systems such as, gas and water pipelines, power transmission and distribution systems, highways and communication systems extend spatially over large geographical regions. Such network systems are composed of interconnected components which form paths. Correlation, resulting from similar topography, soil conditions as well as external loading due to the same environmental factors, between the behaviour of those elements should be taken into consideration and be quantified. In this respect the s...
Reliability and quantity based evaluation of structural proportions of several highway precast prestressed I girderbridges designed in an earthquake region Toker, İldem; Caner, Alp; Department of Civil Engineering (2019) 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...

Citation Formats

N. Topkara Özcan, “Reliability of transportation lifeline systems subjected to earthquake loads,” M.S. - Master of Science, Middle East Technical University, 2016.