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Title:Potresni odziv večetažnih strižnih zidanih sten in učinek utrjevanja s kompozitnimi oblogami
Authors:ID Triller, Petra (Author)
ID Tomaževič, Miha (Author)
ID Gams, Matija (Author)
Files:.pdf PDF - Presentation file, download (7,47 MB)
MD5: FF28FEC7C9CFA87E5FC38A11DB0D1D0C
 
URL URL - Source URL, visit http://arhiv.izs.si/fileadmin/dokumenti/msg/Gradbeni-vestnik-april-2018.pdf
 
Language:Slovenian
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:večetažnih sten, sezidanih iz modularnih zidakov, s poudarkom na opazovanju mehanizmov odziva in porušitve, ki se razvijejo v večetažnih stenah z odprtinami. Druga tema je osredotočena na raziskave utrjevanja takšnega zidovja z malto, armirano z mrežicami iz steklenih vlaken. Za raziskave smo na Zavodu za gradbeništvo Slovenije zgradili in preiskali posamezne zidove in večji trietažni preizkušanec v naravni velikosti. V cikličnem strigu pri konstantnem tlaku smo preizkusili več referenčnih in utrjenih zidov ter trietažni model dimenzij 4 x 4 m v tlorisu in višine 6,7 m. Trietažni model smo najprej obremenili do večjih, a popravljivih poškodb. Zatem smo poškodovani preizkušanec utrdili s kompozitnimi oblogami iz malte, armirane s steklenimi vlakni (GFRP), ter ga ponovno preiskali, tokrat skoraj do porušitve. V obeh primerih je bil odziv modela na vodoravno obtežbo s t. i. etažnim mehanizmom, pri katerem se večina poškodb skoncentrira v zidovih najšibkejše etaže. V zidovih smo opazili tipične strižne poškodbe z diagonalnimi razpokami. Potresno obnašanje posameznih zidov je bilo zelo podobno odzivu zidnih slopov večetažnega preizkušanca. Rezultati kažejo, da je mogoče z ustreznim načinom utrjevanja zidov doseči občutno izboljšanje potresnega obnašanja.
Keywords:nearmirano zidovje, laboratorijske preiskave, ciklične strižne preiskave, GFRP-kompoziti, utrjevanje
Publication status:Published
Publication version:Version of Record
Publication date:01.04.2018
Publisher:Zveza društev gradbenih inženirjev in tehnikov Slovenije
Year of publishing:2018
Number of pages:str. 74-85
Numbering:Letn. 67
PID:20.500.12556/DiRROS-17546 New window
UDC:624.042.7:692.2(497.4)
ISSN on article:0017-2774
COBISS.SI-ID:8442465 New window
Publication date in DiRROS:13.12.2023
Views:509
Downloads:250
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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

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:J2-6749
Name:OBNAŠANJE VEČETAŽNIH STRIŽNIH STEN Z ODPRTINAMI PRI POTRESNI OBTEŽBI

Funder:ARRS - Slovenian Research Agency
Project number:ARRS-MR-496
Acronym:Mladi raziskovalci

Licences

License:CC BY-NC-SA 4.0, Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International
Link:http://creativecommons.org/licenses/by-nc-sa/4.0/
Description:A Creative Commons license that bans commercial use and requires the user to release any modified works under this license.

Secondary language

Language:English
Title:Seismic response of multistorey plain masonry walls and efficiency of strengthening with composites
Abstract:Two topics are presented in the paper. The first one deals with seismic behaviour of multistorey masonry shear walls with openings built from hollow clay units. Special attention is given to the response and failure mechanisms. The second one deals with strengthening of such masonry with fibre reinforced mortar coatings. To study these topics, full scale walls as well as a full scale three storey model were built and tested at Slovenian National Building and Civil Engineering Institute. Reference and strengthened walls as well as the three storey building model with plan dimensions 4 m x 4 m and height of 6.7 m were tested in cyclic shear under constant compressive load. First, the multistorey model was tested in its original state until major but still repairable damage. Then, the damaged model was strengthened with glass fibre (GFRP) mesh reinforced mortar and re-tested to near collapse. In both cases the response to horizontal loads was with storey mechanism, with the majority of damage concentrated in the walls of the weakest storey. The dominant damage was of the diagonal shear type. The seismic response of individual walls tested in cyclic shear was very similar to what was observed in the walls of the multistorey model. Results show that seismic response of masonry structures can be significantly improved by an appropriate strengthening method.
Keywords:unreinforced masonry, laboratory testing, cyclic shear test, glass fibre reinforced polymers (GFRP), strengthening


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