SEISMIC RETROFIT OF OLD BRIDGES WITH SEISMIC ISOLATION

Date

2017-01-05

Author

Caner, Alp
Shaban, Nefize

Metadata

Show full item record

Item Usage Stats

150
views

0
downloads

A standard highway bridge has usually multi simple spans supported over piers by elastomeric bearings in Turkey. The bearings usually do not provide a positive connection but in contact with girder and pier by only gravitational forces. In this study, a model test bridge of about ½ scale have been shaken under low to moderate earth quakes to determine the change in response of the bridge with different seismic isolation configurations. Three configurations of bearings are elastomeric bearings, lead core bearings and ball rubber bearings. The bridges supported with lead rubber or ball rubber bearings’ deck displacements are dampened out in a short period of time compared to the tests of bridges with elastomeric bearings as expected. The seismic retrofit goals can be defined for the old bridges based on the target structural response in terms of displacements and forces

Subject Keywords

Bridge, Seismic, Isolation, Retrofit

URI

https://www.wcee.nicee.org/wcee/article/16WCEE/WCEE2017-3788.pdf
https://hdl.handle.net/11511/80075

Conference Name

16th World Conference on Earthquake Engineering, 16WCEE (2017)

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Improvement of computational software for composite curved bridge analysis Kalaycı, Ahmet Serhat; Topkaya, Cem; Department of Civil Engineering (2005) In highway bridge construction, composite curved girder bridges are becoming more popular recently. Reduced construction time, long span coverage, economics and aesthetics make them more popular than the other structural systems. Although there exist some methods for the analysis of such systems, each have shortcomings. The use of Finite Element Method (FEM) among these methods is limited except in the academic environments. The use of commercial FEM software packages in the analysis of such systems is cumb...
Sensitivity analysis of bridge decks for high-speed railway bridges Rahman, Abdullah; Caner, Alp; Department of Civil Engineering (2020) Continuous welded rail provides a smooth ride for railway traffic, the use of continuous welded rail allows the trains to reach higher speeds, where tracks are made to be continuous over supporting structure and discontinuities -embankment in front of and behind the bridge- the structure and the track jointly resist the longitudinal forces generated from rail traffic. Bridge structural properties can allow additional stresses in rail due to movement under variable actions. Bridge structure and track are int...
Seismic performance of unbonded elastomeric bearings on bridges : an experimental and parametric study Domaniç, Kemal Arman; Caner, Alp; Department of Civil Engineering (2015) Elastomeric bearings were used in a majority of bridges completed in Turkey. Usually, the connection between bearings and the structure were established only by means of friction. Vertical excitation can contribute to a significant damage in such cases, especially at bearing locations, as indeed was the case in the recent 1999 İzmit Earthquake. In Turkish seismic design practice, a common friction coefficient of 0.20 is frequently used. The aim of this study is to look into the values suggested by specifica...
Experimental and numerical investigation of the wind effects on long span bridge decks Iman, Ashtiani Abdi; Uzol, Oğuz; Kurç, Özgür; Department of Aerospace Engineering (2011) Long span bridges are susceptible to wind. Hence it is important to study their wind-induced vibrations to avoid any probable structural failures. In this thesis, the results of an experimental and computational investigation of the aerodynamic characteristics of trapezoid bridge deck cross-sections with three different aspect ratios (10, 12 and 15) and four different side angles (75º, 60 º, 45 º and 30 º) are analyzed and presented. The flow around rigid fixed bridge deck models is investigated to obtain t...
Cost optimum design of reinforced concrete bridge piers for standard highway bridges Orak, Celil; Binici, Barış; Department of Civil Engineering (2022-2) Bridges are among the most important cost items of transportation projects in Turkey and in the world. In bridge engineering, superstructures are designed with optimization through years of experience. However, the same is not true for infrastructre elements such as piers. The evaluation of the bridge piers,built in Turkey and around the world, considering structural design shows that they are "overdesign" elements suitable for optimization. The ratio of the cost of the piers to the total bridge cost is aro...

Citation Formats

A. Caner and N. Shaban, “SEISMIC RETROFIT OF OLD BRIDGES WITH SEISMIC ISOLATION,” presented at the 16th World Conference on Earthquake Engineering, 16WCEE (2017), Santiago Chile, 2017, Accessed: 00, 2021. [Online]. Available: https://www.wcee.nicee.org/wcee/article/16WCEE/WCEE2017-3788.pdf.