Proračun arminanobetonske konstrukcije metodom postupnog guranja

master's thesis

• Title (english): Seismic assessment of existing reinforced structure with pushover method
• Author: Josipa Karlović
• Mentor: Mario Uroš (mentor)
• Committee member: Josip Atalić (predsjednik povjerenstva)
• Committee member: Marija Demšić (član povjerenstva)
• Committee member: Mario Uroš (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Engineering Mechanics); Zagreb
• Defense date and country: 2024-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

U radu je proveden proračun metodom postupnog guranja postojeće armiranobetonske
konstrukcije. U uvodnom dijelu objašnjene su osnovne seizmičke metode proračuna
konstrukcija s naglaskom na metodu postupnog guranja. U drugom poglavlju dani su ulazni
podaci o svojstvima materijala i presjecima promatrane konstrukcije, koji su pretpostavljeni
prema postojećoj arhivskoj dokumentaciji. Zaključak o stanju građevine, razred važnosti te
potrebna razina obnove navedeni su u trećem poglavlju. Četvrto poglavlje prikazuje
modeliranje konkretne građevine kao i definicije plastičnih zglobova elemenata. Proračun je
proveden nelinearnom statičkom metodom postupnog guranja u programskom paketu ETABS
koristeći metodu koncentrirane plastičnosti kako bi se dobila krivulja kapaciteta zgrade. Na
temelju analize presjeka, definirane su krivulje kapaciteta plastičnih zglobova na kritičnim
elementima. Korišteni su mjerodavni oblici opterećenja te su dobivene krivulje kapaciteta
nosivosti i indeks značajnog oštećenja konstrukcije (IZO). Uz to je dobiven i kritični mehanizam
otkazivanja konstrukcije koji je prikazan u šestom poglavlju. Konačno je napravljen kritički osvrt
na metodu proračuna i izvornu koncepciju konstrukcije zgrade.

Abstract (english)

The paper presents a pushover analysis of an existing reinforced concrete structure. In the
introductory section, fundamental seismic design methods for structures are explained, with
an emphasis on the pushover analysis method. The second chapter provides input data on
material properties and cross-sections of the observed structure, which were assumed based
on the existing archival documentation. Conclusions regarding the building's condition, its
importance class, and the required level of rehabilitation are outlined in the third chapter. The
fourth chapter details the modeling of the specific building, including the definition of plastic
hinges for structural elements. The analysis was performed using the nonlinear static pushover
method within the ETABS software package, applying the concentrated plasticity approach to
generate the building’s capacity curve. Based on the cross-section analysis, capacity curves for
plastic hinges in critical elements were defined. The relevant loading patterns were applied,
and capacity curves for the structure’s load-bearing capacity, as well as the Significant Damage
Index (SDI), were obtained. Additionally, the critical failure mechanism of the structure was
identified and is presented in the sixth chapter. Finally, a critical review of the design method
and the original structural concept of the building is provided.

• Keywords: potres; metoda postupnog guranja; plastični zglobovi; IZO faktor; ETABS
• Keywords (english): earthquake; pushover method; plastic hinges; IZO factor; ETABS
• Language: croatian
• URN:NBN: urn:nbn:hr:237:666463
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-10-07 10:38:48