Seismic response of circular concrete columns reinforced with CSA G30.18 500W steel
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Tadele, Sisay
issued: 2023-09-05T18:25:40Z
issued: 2023
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: Bridge structures are essential components of infrastructure that play a pivotal role in connecting areas with difficult geography, such as across a river. Apart from ensuring ultimate life safety and serviceability limit state performance, their performance during seismic events determines the safety of the user and economic growth of the region. With advancements in technology, new construction materials are being produced. One of the commonly promoted types of new materials in construction is high-strength steel (HSS). The use of HSS for instance has a wide range of applications in construction, from reducing bar congestion and reducing labor as well as construction costs. Nonetheless, the use of HSS has been restricted, or no guidelines are available in many cases for the design of seismic-resistant members. In this study, the performance of CSA G30.18 500W is evaluated to study its suitability for the seismic design of reinforced concrete bridges. This study involves extensive experimental research work involving material tests of the HSS reinforcing steel and large-scale reinforced concrete bridge pier tests to assess the performance of the material. The examinations of low-cycle fatigue were conducted with various bar sizes, unsupported lengths, and strain amplitudes. Notably, the CSA G30.18 500W exhibited satisfactory low-cycle fatigue performance, wherein the effect of bar unsupported length and strain amplitude were more pronounced. Additionally, two large-scale bridge piers were tested under seismic loads to study the performance of the reinforced bridge columns, which are the location of plastic hinges in bridges and undergo large inelastic deformation. The test results of the columns indicated that the bridge piers achieved comparable drift levels and energy dissipation capacities with columns reinforced with regular steel ASTM A706 Grade 420. Moreover, the strain limits for performance-based design (PBD) of bridges utilizing CSA G30.18 500W were derive…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/85791
note: SEISMIC RESPONSE OF CIRCULAR CONCRETE COLUMNS REINFORCED WITH CSA G30.18 500W STEEL by Sisay Tadele B.Sc., Technion Israel Institute of Technology, 2020 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE COLLEGE OF GRADUATE STUDIES (Civil Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) August 2023 © Sisay Tadele, 2023 ii The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis entitled: SEISMIC RESPONSE OF CIRCULAR CONCRETE COLUMNS REINFORCED WITH CSA G30.18 500W STEEL submitted by Sisay Tadele in partial fulfillment of the requirements of the degree of Master of Applied Science . Dr. M. Shahria Alam, School of Engineering Supervisor Dr. Ahmad Rteil, School of Engineering Supervisory Committee Member Dr. Suliman Gargoum, School of Engineering Supervisory Committee Member Dr. Sina Kheirkhah, School of Engineering University Examiner iii ABSTRACT Bridge structures are essential components of infrastructure that play a pivotal role in connecting areas with difficult geography, such as across a river. Apart from ensuring ultimate life safety and serviceability limit state performance, their performance during seismic events determines the safety of the user and economic growth of the region. With advancements in technology, new construction materials are being produced. One of the commonly promoted types of new materials in construction is high-strength steel (HSS). The use of HSS for instance has a wide range of applications in construction, from reducing bar congestion and reducing labor as well as construction costs. Nonetheless, the use of HSS has been restricted, or no guidelines are available in many cases for the design of seismic-resistant members. In this study, the performance of CSA G30.18 500W is evaluated to study its suitability for the seismic design of reinforced concrete bridges. This study involves extensive e…
has type: Thesis/Dissertation
date issued: 2023-09
is shown at: 10.14288/1.0435752
language: eng
degree discipline: Civil Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Alam, M. Shahria
type: Text
identifier URI: http://hdl.handle.net/2429/85791