magistrsko delo št.: 298/II. GR
Gašper Flajs (Author), Vlatko Bosiljkov (Mentor), David Antolinc (Co-mentor)

Abstract

V magistrski nalogi je opravljena analiza potresne odpornosti obstoječe kamnite stavbe v Posočju. Izvedena je tudi študija utrditvenih ukrepov, katere smiselnost se je finančno ovrednotila. V teoretičnem delu so predstavljene ključne značilnosti obnašanja zidanih konstrukcij med potresom. Opisana sta tudi mehanizma porušitve v in izven ravnine zidu. Nadalje so predstavljeni osnovni postopki za ocenjevanje potresne odpornosti v skladu s standardoma Evrokoda SIST EN 1998-1 in SIST EN 1998-3. Na objektu so bile izvedene georadarske preiskave na terenu, s ciljem določiti sestavo kamnitih zidov. Stavba je bila potresno analizirana z uporabo nelinearne statične (potisne) analize (N2), pri čemer je bil uporabljen program 3Muri. V obstoječem stanju je konstrukcija izpolnjevala le 20 % zahtev Evrokoda. Model konstrukcije je bil nato modificiran ob upoštevanju različnih utrditvenih ukrepov, dokler ni izpolnil vseh zahtev Evrokoda. Preizkušen je bil odziv stavbe v različnih scenarijih, vključno z uporabo prednapetih jeklenih vezij, vgradnjo sovprežnih estrihov, zamenjavo lesenih medetažnih konstrukcij z armirano betonskimi ploščami, zamenjavo tankih opečnih zidov z debelejšimi modularnimi opekami, injektiranjem kamnitih zidov ter vgradnjo armirano betonske skeletne konstrukcije znotraj obstoječe stavbe. V zadnjem poglavju je bila narejena stroškovna analiza učinkovitosti posameznih ukrepov. Ugotovljeno je bilo, da bi bila vgradnja armiranobetonskih okvirjev znotraj stavbe najbolj smiseln ukrep za zagotavljanje potresne varnosti objekta.

Keywords

gradbeništvo;magistrska dela;GR;kamniti zidovi;potres;utrditev obstoječih stavb;nelinearna statična analiza;potresna odpornost;Evrokod standardi;neporušne in situ preiskave;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [G. Flajs]
UDC: 624.042.7:624.012(497.4Posočje)(043.3)
COBISS: 178514691 Link will open in a new window
Views: 177
Downloads: 10
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Other data

Secondary language: English
Secondary title: Parametric seismic analysis of different strengthening measures for masonry building from Posočje region considering results of non- destructive testing
Secondary abstract: In the master's thesis, an analysis of the seismic resistance of an existing stone building in the Posočje region has been conducted. Additionally, a study of strengthening measures has been performed, with their financial viability evaluated. The theoretical part introduces key characteristics of the masonry structures behavior during earthquakes. It describes the mechanisms of in-plane and out-of-plane wall failure. Subsequently, the essential procedures for assessing seismic resistance in accordance with Eurocode standards SIST EN 1998-1 and SIST EN 1998-3 are presented. In-situ ground-penetrating radar investigations were carried out on the structure, primarily aimed at determining the structure of the stone walls. The building was seismically assessed using nonlinear static (pushover) analysis (N2), employing the 3Muri software. In its initial condition, the structure only met 20 % of the Eurocode requirements regarding the earthquake load. Various strengthening measures were applied to the structural model until all Eurocode requirements were met. The response of the building was tested for various strengthening techniques like prestressed steel ties, the installation of composite slabs, the replacement of timber floor structures with reinforced concrete slabs, the substitution of thin brick walls with thicker modular blocks, the injection of stone walls, and the installation of a reinforced concrete frame structure within the existing building. In the final chapter, a cost-benefit analysis was carried out considering different strengthening measures. It was determined that the introduction of reinforced concrete frames within the building would be the most competitive option to ensure seismic safety of the structure.
Secondary keywords: civil engineering;master thesis;stone walls;earthquak;strengthening of existing buildings;nonlinear static analisys;seismic resistance;Eurocode standards;non-destructive in situ tests;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XIV, 91 str.
ID: 22264505