دانلود رایگان مقاله لاتین طول دوره ساختمان rc از سایت الزویر
عنوان فارسی مقاله:
افزایش طول دوره اساسی یک ساختمان RC در طول توالی ازدحام لرزه Pollino
عنوان انگلیسی مقاله:
Fundamental period elongation of a RC building during the Pollino seismic swarm sequence
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Monitoring is an important tool for identification of the dynamic characteristics of a building and the estimation of their possible changes over time as a result of structural degradation due to earthquakes, aging and/or long-term, intense, operational demands. This approach is more important when considering the increasing number of aging structures and infrastructures, especially exposed to seismic prone activity for seismic risk. In the last two decades several innovative techniques have been proposed to identify the dynamic characteristics of real engineering structures [1–15]. Fast monitoring procedures are gaining ground; they obtain useful information about the extent of damage in a large number of strategic buildings during and after seismic events by using the records from a limited number of sensors located in the structure. According to Non-destructive Damage Evaluation (NDE) methods, the monitoring of the Rotonda building is a I level application, i.e. a method that only assesses if some damage has occurred. This monitoring gave us the opportunity to study the dynamic behaviour and the variation of the fundamental period due to different levels of motion of earthquakes before any damage; this building was not damaged, not even by the main shock (ML = 5). Many recent experimental studies ([16,17] andreference therein) have demonstrated the ability of ambient vibration surveys to estimate the main frequencies of building vibration in the elastic domain. Then, the important issue is to know how the fundamental frequency drop observed during weak to strong earthquake could be considered as a proxy of the damage. Observations about the fundamental frequency variation due to damage can be traced back both to Clinton et al. [18], for the Millikan Library buildings which has experienced several earthquakes, and to Dunand et al. [19] who studied some buildings during the 2003 Boumerdès earthquake. From weak to strong motion, Hans et al. [20] and Michel et al. [21,22] have reported the variation of the fundamental frequency of buildings related to the opening of cracks in the elastic domain. Such nonlinearities may produce a recoverable frequency decrease of about 35% during excitation. On the other hand, it seems that a 60% permanent drop in frequency is a limit before the collapse according to data compiled by Calvi et al. [23].
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کلمات کلیدی:
ESC2016-392 - CO Meeting Organizer meetingorganizer.copernicus.org/ESC2016/ESC2016-392.pdf by MR Gallipoli - 2016 - Related articles Author(s) 2016. CC Attribution 3.0 License. Fundamental period elongation of a RC building during the Pollino seismic swarm sequence. Maria Rosaria Gallipoli ... [PDF]elongation of the fundamental periods of reinforced concrete frame ... www.iitk.ac.in/nicee/wcee/article/14_05-01-0322.PDF by L Lin - Cited by 2 - Related articles determine the relationship between the elongation of the fundamental period ... KEYWORDS: reinforced concrete, building, period, elongation, seismic, analysis. [PDF]STATE-OF-THE-KNOWLEDGE ON THE PERIOD ELONGATION OF ... citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.588.7836&rep=rep1... by GM CALVI - Cited by 36 - Related articles Sep 8, 2006 - concrete (RC) buildings during strong ground shaking due to earthquakes. ... The increase in fundamental period (and associated decrease in ... [PDF]Fundamental period elongation of a RC building during the Pollino ... iranarze.ir/wp-content/uploads/2016/11/E2797.pdf Fundamental period elongation of a RC building during the. Pollino seismic swarm sequence. Maria Rosaria Gallipolia,∗, Tony Alfredo Stabilea, Philippe ... Fundamental periods of vibration of RC buildings in Portugal from in ... link.springer.com/article/10.1007/s10518-009-9162-1 by CS Oliveira - 2010 - Cited by 60 - Related articles Discussion on how to deal with the elongation of the periods of vibration due to ... Ambient vibration Fundamental period RC buildings Infill walls Non-linear ... [PDF]Evaluation and considerations about fundamental periods of ... - NHESS www.nat-hazards-earth-syst-sci.net/13/1903/2013/nhess-13-1903-2013.pdf by R Ditommaso - 2013 - Cited by 22 - Related articles Jul 31, 2013 - of the fundamental period of reinforced concrete buildings ..... been found (max value of the period elongation is around. 30%), in spite of the ... [PDF]Period elongation-based framework for operative assessment ... - strest strest.ethz.ch:8080/opencms/export/.../ref_Trevlopoulos_Gueguen_SDEE2016.pdf by K Trevlopoulos - Cited by 3 - Related articles time-variant vulnerability of reinforced concrete buildings during aftershock sequences. .... Modal analyses are used to compute the fundamental period of the. [PDF]VarIatIoN of VIBratIoN PerIoD of a rC BuILDING DurING the PoLLINo ... www3.ogs.trieste.it/gngts/files/2013/S23/Riassunti/Mucciarelli.pdf evaluation of fundamental periods with the variations observed during weak and strong motions to ... distinguish temporary vs permanent period elongation.
