MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGS
Despite unique seismic resistance characteristics of reinforced concrete tunnel form buildings, a literature review surveyed rare research works found for this type of buildi...
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Sharif University of Technology
2017-05-01
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Series: | مهندسی عمران شریف |
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Online Access: | https://sjce.journals.sharif.edu/article_1124_592702ea4d3d86a5ece344733ad1a160.pdf |
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author | S. B. Beheshti-Aval V. Mohsenian |
author_facet | S. B. Beheshti-Aval V. Mohsenian |
author_sort | S. B. Beheshti-Aval |
collection | DOAJ |
description | Despite unique seismic resistance characteristics of reinforced concrete tunnel form buildings, a literature review surveyed rare research works found for this type of buildings. Unfortunately, no special seismic code is published for reinforced concrete wall-slab system with tunnel form, and there is only little information on the seismic behavior of this structural system type in technical and research docs. Therefore, based on reasonable numerical results, seismic behavior and performance of structures constructed with this technique, considering the effective factors in response, is highly noteworthy in a seismic code of development process. The behavior factors in the seismic design codes are based on engineering judgment and are provided based on observations of various performances of structural systems against past strong earthquake shakings. For reinforced concrete tunnel-form buildings, due to lack of enough information and observations of damages induced by past earthquakes, using the behavior factor of reinforced concrete bearing wall system in the current seismic design process appears as notable concerns which are the main
challenges in designing these structures based on the equivalent lateral force method. This type of structural system has recently innovated and used in mass production houses, so there is rare information pertaining to its behavior under strong earthquakes. Since including the behavior factors in seismic codes are based on engineering judgment from observing its past seismic performance, developing these factors for this new system needs more research works.The most distinctive feature of this study with respect to similar studies is multi-level definition of behavior factors, their extraction with respect to seismic intensity, and the accepted damage level as expected performance levels in designing structure. Hence, the demand/capacity behavior factors are determined with a more accurate attitude involving the effective parameters such as ductility, over-strength, redundancy, seismic hazard level, performance levels, etc. The results showed high capacity and resistance of system and good seismic performance of structures under the current study. Thereby, choosing behavior factor of 5 for initial design ensures the immediate occupancy performance level for all three structures under high earthquake intensity considered in seismic design code of Iran. |
first_indexed | 2024-03-12T13:17:48Z |
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institution | Directory Open Access Journal |
issn | 2676-4768 2676-4776 |
language | fas |
last_indexed | 2024-03-12T13:17:48Z |
publishDate | 2017-05-01 |
publisher | Sharif University of Technology |
record_format | Article |
series | مهندسی عمران شریف |
spelling | doaj.art-b9e31a28667243bd82583c5e9ad907802023-08-26T10:21:34ZfasSharif University of Technologyمهندسی عمران شریف2676-47682676-47762017-05-0133.21.2535910.24200/j30.2017.11241124MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGSS. B. Beheshti-Aval0V. Mohsenian1Dept. of Civil Engineering K. N. Toosi University of TechnologyDept. of Civil Engineering University of Science and CultureDespite unique seismic resistance characteristics of reinforced concrete tunnel form buildings, a literature review surveyed rare research works found for this type of buildings. Unfortunately, no special seismic code is published for reinforced concrete wall-slab system with tunnel form, and there is only little information on the seismic behavior of this structural system type in technical and research docs. Therefore, based on reasonable numerical results, seismic behavior and performance of structures constructed with this technique, considering the effective factors in response, is highly noteworthy in a seismic code of development process. The behavior factors in the seismic design codes are based on engineering judgment and are provided based on observations of various performances of structural systems against past strong earthquake shakings. For reinforced concrete tunnel-form buildings, due to lack of enough information and observations of damages induced by past earthquakes, using the behavior factor of reinforced concrete bearing wall system in the current seismic design process appears as notable concerns which are the main challenges in designing these structures based on the equivalent lateral force method. This type of structural system has recently innovated and used in mass production houses, so there is rare information pertaining to its behavior under strong earthquakes. Since including the behavior factors in seismic codes are based on engineering judgment from observing its past seismic performance, developing these factors for this new system needs more research works.The most distinctive feature of this study with respect to similar studies is multi-level definition of behavior factors, their extraction with respect to seismic intensity, and the accepted damage level as expected performance levels in designing structure. Hence, the demand/capacity behavior factors are determined with a more accurate attitude involving the effective parameters such as ductility, over-strength, redundancy, seismic hazard level, performance levels, etc. The results showed high capacity and resistance of system and good seismic performance of structures under the current study. Thereby, choosing behavior factor of 5 for initial design ensures the immediate occupancy performance level for all three structures under high earthquake intensity considered in seismic design code of Iran.https://sjce.journals.sharif.edu/article_1124_592702ea4d3d86a5ece344733ad1a160.pdftunnel form systemresponse modification factordemand r-factorsupply r-factor |
spellingShingle | S. B. Beheshti-Aval V. Mohsenian MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGS مهندسی عمران شریف tunnel form system response modification factor demand r-factor supply r-factor |
title | MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGS |
title_full | MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGS |
title_fullStr | MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGS |
title_full_unstemmed | MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGS |
title_short | MULTI-LEVEL R-FACTOR DETERMINATION FOR RC TUNNEL-FORM BUILDINGS |
title_sort | multi level r factor determination for rc tunnel form buildings |
topic | tunnel form system response modification factor demand r-factor supply r-factor |
url | https://sjce.journals.sharif.edu/article_1124_592702ea4d3d86a5ece344733ad1a160.pdf |
work_keys_str_mv | AT sbbeheshtiaval multilevelrfactordeterminationforrctunnelformbuildings AT vmohsenian multilevelrfactordeterminationforrctunnelformbuildings |