Performance of School Buildings in Turkey During the 1999 Düzce and the 2003 Bingöl Earthquakes

2009 ◽  
Vol 25 (2) ◽  
pp. 239-256 ◽  
Author(s):  
Turel Gur ◽  
AliCihan Pay ◽  
Julio A. Ramirez ◽  
Mete A. Sozen ◽  
Arvid M. Johnson ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
School Buildings ◽  
Floor Plan ◽  
Structural System ◽  
Concrete Frames ◽  
Structural Walls ◽  
Concrete Walls ◽  
Moment Resisting Frame ◽  
Moment Resisting ◽  
The Moment

Several school buildings were surveyed in the disaster areas of the Marmara (17 August 1999, [Formula: see text]), Düzce (12 November 1999, [Formula: see text]), and Bingöl (1 May 2003, [Formula: see text]) earthquakes in Turkey. Among them, 21 reinforced concrete buildings were found to have an identical floor plan. Lateral load resisting structural system consisted of reinforced concrete frames (moment-resisting frame) in 16 of the buildings and structural concrete walls integrated with the moment-resisting frame (dual system) in the remaining five buildings. The number of stories above ground in these buildings ranged from two to four. These school buildings provide a nearly ideal test of the effect of a single important structural characteristic on the performance of buildings with structural designs that are uniform in all other respects. Our observation is that the presence of structural walls improves the behavior of reinforced concrete systems drastically.

scholarly journals Reliability Assessment of Reinforced Concrete Buildings Using Field Data in Tehran

2020 ◽  
Vol 10 (1) ◽  
pp. 39-44
Author(s):  
Aliasghar Amirkardoust ◽  
Seyed Azim Hosseini ◽  
Seyed Mohammad Seyedhosseini ◽  
Hamidreza Rabeifard ◽  
Abbas Akbarpournickghalbrashti
Keyword(s):  
Reinforced Concrete ◽  
Reliability Analysis ◽  
Field Data ◽  
Time History ◽  
Seismic Excitation ◽  
Real Field ◽  
Structural System ◽  
Rc Buildings ◽  
Moment Resisting Frame ◽  
Moment Resisting

AbstractReinforced Concrete (RC) structures are a prevalent type of structure. In each year a lot of RC buildings are constructed and there is a large investment on RC buildings. Dual systems (containing RC shear walls and moment resisting frame) and moment resisting frame systems are the most common type of RC buildings in Iran. Earthquake can cause severe damages to RC buildings and it is important to identify which structural system has better performance under seismic excitation. Some researchers have studied seismic reliability of the bridges structures using field data. However, real field data are not used to analyze the reliability of RC buildings. In this study the reliability analysis is used to evaluate the performance of each structural system. The probability distribution of the concrete and steel bars strength are gathered by nun-destructive tests and bar tensile tests. The mentioned tests are done in 110 RC buildings in Tehran. A series of time history analysis are done to determine the probability of failure. Monte Carlo sampling is used for reliability analysis. The reliability of two prevalent RC structural systems are compared under different earthquake records. It is found that the dual system can have a better performance under seismic excitation and it can reduce damages in the earthquake.

scholarly journals Maximum yield stress in reinforced concrete frames

1969 ◽  
Vol 2 (3) ◽  
pp. 267-269
Author(s):  
D. S. Mackenzie
Keyword(s):  
Reinforced Concrete ◽  
Yield Stress ◽  
Maximum Stress ◽  
Maximum Yield ◽  
Reinforcing Bars ◽  
Concrete Frames ◽  
Standard Specification ◽  
The Past ◽  
Moment Resisting ◽  
Earthquake Moment

In the past steelmakers have tried to ensure that the yield stress of their reinforcing bars has always been above the specified minimum. It now appears that for earthquake moment resisting frames it should always be below some known maximum stress. Such a stress could with justification be included in the Standard Specification for the reinforcing concerned.

Seismic performance of ductile medium height reinforced concrete frame buildings designed in accordance with the provisions of the 1995 National Building Code of Canada

1999 ◽  
Vol 26 (5) ◽  
pp. 606-617 ◽  
Author(s):  
A C Heidebrecht ◽  
N Naumoski
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Frame Structure ◽  
Performance Criteria ◽  
Building Code ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
Moment Resisting Frame ◽  
Moment Resisting ◽  
Interstorey Drift

This paper describes an investigation into the seismic performance of a six-storey ductile moment-resisting frame structure located in Vancouver and designed and detailed in accordance with the seismic provisions of the National Building Code of Canada (1995). Both pushover and dynamic analyses are conducted using an inelastic model of the structure as designed and detailed. The structural performance of a number of design variations is evaluated using interstorey drift and member curvature ductility response as performance measures. All frames studied are expected to perform at an operational level when subjected to design level seismic excitations and to meet life safe performance criteria at excitations of twice the design level.Key words: seismic, building, frames, ductile, design, performance, reinforced concrete, code.

Seismic Rehabilitation of a School Building in Cephalonia, Greece

2020 ◽  
pp. 1-20
Author(s):  
Christos Giarlelis ◽  
Evlalia Lamprinou ◽  
Constantinos Repapis
Keyword(s):  
Reinforced Concrete ◽  
Response Spectrum ◽  
Earthquake Sequence ◽  
School Building ◽  
Structural Walls ◽  
Concrete Walls ◽  
Seismic Rehabilitation ◽  
Reinforced Concrete Walls ◽  
Structural Capacity ◽  
Structural Failures

<p>The 2014 earthquake sequence in Cephalonia, Greece, resulted in a number of structural failures. In Argostoli, the capital of the island, a school building suffered light damage; however, the structural assessment following the analysis procedures of the recently published Greek Code for Structural Interventions, showed that seismic strengthening is required. The structure was built on the aftermath of the catastrophic 1953 Ionian earthquake sequence based on older code requirements, which are much outdated, as indicated from the results of both modal response spectrum analyses and non-linear static analyses. The retrofit aims to increase the very low structural capacity of the building and as a means for that the use of concrete jackets is selected. Based on the results of the assessment, it was decided that concrete jackets should be applied to all columns, while large structural walls running along the transversal direction were strengthened with single-sided reinforced concrete jacketing. The interventions are limited by architectural demands and cost considerations. However, analyses of the strengthened structure show that the interventions improve its seismic behaviour adequately. The detailing of interventions is thoroughly presented. What makes this case study interesting is the unusual structural system of the building, which is an ingenious combination of frame elements and lightly reinforced concrete walls and its behaviour to one of the strongest recent Greek earthquakes. The rehabilitation study had to model correctly the structure and propose interventions that were in agreement with the architectural demands and the cost consideration.</p>

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