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Title:Potresni odziv armiranobetonskih sten, povezanih s ploščami brez povezovalnih gred
Authors:ID Janevski, Antonio (Author)
ID Isaković, Tatjana (Author)
Files:URL URL - Source URL, visit https://www.zveza-dgits.si/wp-content/uploads/2025/03/GV-03-25.pdf
 
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MD5: 9AC13F81809798365D1FA7549182F92B
 
Language:Slovenian
Typology:1.01 - Original Scientific Article
Organization:Logo ZDGITS - Union of associations of Slovenian civil engineers and technicians
Abstract:V članku je predstavljena analiza potresnega odziva armiranobetonskih (AB) sten, povezanih le s ploščami brez gred, ki jih običajno obravnavamo kot konzolne stene. Raziskali smo, kdaj lahko plošče močno povežejo stene in kako to vpliva na njihov potresni odziv. Nelinearne potisne in analize časovnega odziva so pokazale, da je lahko stopnja povezanosti (CL – Coupling Level) do 50%, zlasti pri konfiguracijah z vitkimi stenami (razmerje višina/širina > 4), kjer se lahko aktivira velika sodelujoča širina plošče. Zaradi močne povezanosti se v slopih razvijejo znatne osne sile (tudi do 80% osnih sil zaradi navpične obtežbe), kar vodi do spremembe togosti in nosilnosti ter prerazporeditev vplivov. Strižne sile so se v posameznih slopih povečale tudi do 50%. Na povečanje strižnih sil vplivajo tudi višje nihajne oblike. Povečanje strižnih sil zaradi okvirnega učinka narašča z večanjem CL, medtem ko vpliv višjih nihajnih oblik upada. Raziskali smo tudi, kdaj je treba korigirati strižne sile, določene z nelinearno potisno analizo, saj slednja ne zajema vpliva višjih nihajnih oblik, ter predlagali enostavne izraze za korekcijo. Odstopanje je bilo v večini primerov manj kot 20%.
Keywords:AB-stene, potresni odziv, stopnja povezanosti, okvirni učinek, vpliv višjih nihajnih oblik, povečanje strižnih sil, nelinearna analiza
Publication status:Published
Publication version:Version of Record
Publication date:01.03.2025
Publisher:Zveza društev gradbenih inženirjev in tehnikov Slovenije
Year of publishing:2025
Number of pages:str. 29-44
Numbering:Letn. 74, Št. 1
PID:20.500.12556/DiRROS-22702 New window
UDC:624.041.6:624.012.45
ISSN on article:0017-2774
COBISS.SI-ID:230013699 New window
Note:Nasl. v slov. in angl., besedilo v slov.;
Publication date in DiRROS:18.06.2025
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Downloads:163
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Record is a part of a journal

Title:Gradbeni vestnik : glasilo Zveze društev gradbenih inženirjev in tehnikov Slovenije
Shortened title:Gradb. vestn.
Publisher:Zveza društev gradbenih inženirjev in tehnikov Slovenije
ISSN:0017-2774
COBISS.SI-ID:859140 New window

Licences

License:CC BY-SA 4.0, Creative Commons Attribution-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-sa/4.0/
Description:This Creative Commons license is very similar to the regular Attribution license, but requires the release of all derivative works under this same license.

Secondary language

Language:English
Title:Seismic response of reinforced concrete walls coupled by slabs without coupling beams
Abstract:The article investigates the seismic response of reinforced concrete (RC) walls coupled only by slabs, without coupling beams, a configuration often considered as cantilever walls. The study investigates when slabs significantly couple walls to a significant extent and how this affects their overall seismic behaviour. Non-linear pushover and response history analyses revealed coupling level (CL) of up to 50%, particularly in buildings featuring slender walls (aspect ratio > 4), where a significant effective slab width can be activated. A significant CL caused axial forces in the wall piers to vary by up to 80% of the gravity loads, altering changing stiffness and strength, causing pronounced redistributions of seismic demand among wall piers and amplifying shear forces in individual piers by up to 50%. Additionally, the study highlights that, shear demand can also increase due to higher modes of vibration. While the amplification of shear forces due to frame action increased with increasing CL, it was found that shear force amplification due to higher modes was found to decreased. To address the limitations of non-linear pushover analysis in capturing higher-mode effects, simple correction expressions are proposed, with deviations in most cases under below 20%.
Keywords:RC walls, seismic response, coupling level, frame action, higher mode effects, shear amplification, non-linear analysis


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  1. Gradbeni vestnik

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