diplomska naloga
Janko Lisjak (Author), Darko Beg (Mentor), Boštjan Pulko (Thesis defence commission member), Janko Logar (Thesis defence commission member), Franc Sinur (Co-mentor)

Abstract

Robustnost jeklenih okvirnih konstrukcij

Keywords

gradbeništvo;UNI;diplomska dela;robustnost;jeklene okvirne konstrukcije;nesorazmerna porušitev;nezgodna obtežba;ključni element;metoda namišljene odstranitve;

Data

Language: Slovenian
Year of publishing:
Source: Ljubljana
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [J. Lisjak]
UDC: 006:624:014:2(043.2)
COBISS: 6448225 Link will open in a new window
Views: 2146
Downloads: 668
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Other data

Secondary language: English
Secondary title: Structural robustness of steel framed buildings
Secondary abstract: The diploma thesis deals with structural robustness of steel framed buildings. The design guidance and the strategies in accordance with the Eurocodes (SIST EN 1990 and SIST EN 1991), applicable for structural robustness and designing for the avoidance of disproportionate collapse are presented. The structure has to be robust to withstand extra load in the cases of accidental events like fire, explosions, impact or the consequences of human error. SIST EN 1991-1-7 provides a method to categorise buildings in consequences classes. The building categorisation considers the building type, occupancy and size. For lower consequences of failure class we presented the provision of a minimum level of horizontal tying. In higher classes, the provision of vertical ties was provided in addition. We also showed the notional removal method, where the nonlinear response of the structure was checked in case of a removed column. The key element method was used, where the limit of admissible local damage was exceeded. We presented the design of most important structural elements to sustain the nominal accidental load. For the building in the class with the highest consequences of failure, a simplified systematic risk assessment was undertaken, taking into account the event of a vehicle impact. The total economic risk was monitored while changing the input data about the frequency and amplitude probability of the event.
Secondary keywords: graduation thesis;civil engineering;robustness;steel framed buildings;progressive collapse;accidental load;key element;notional removal;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XVI, 158 str.
Type (ePrints): thesis
Title (ePrints): Structural robustness of steel framed buildings
Keywords (ePrints): robustnost;jeklene okvirne konstrukcije;nesorazmerna porušitev;nezgodna obtežba;ključni element;metoda namišljene odstranitve
Keywords (ePrints, secondary language): robustness;steel framed buildings;progressive collapse;accidental load;key element;notional removal
Abstract (ePrints): V diplomski nalogi sem se ukvarjal z robustnostjo jeklenih okvirnih konstrukcij. Predstavil sem zahteve in priporočila standardov Evrokod (SIST EN 1990 in SIST EN 1991) glede preprečevanja poškodb in porušitev konstrukcije ter zunanje vplive, ki jih je potrebno upoštevati. Za prenašanje dodatnih obremenitev, ki jih predstavljajo nezgodni vplivi (požar, eksplozije, vpliv oziroma posledice človeških napak in trki), glavno vlogo odigra robustnost konstrukcije. Glede na velikost, obiskanost in družbeni pomen, so zgradbe razvrščene v različne razrede posledic, za katere so določene posamezne zahteve in ukrepi za zagotavljanje ustrezne robustnosti. Z velikostjo in pomembnostjo zgradbe naraščajo tudi zahteve glede robustnosti. Pri najnižjem razredu sem prikazal zagotavljanje minimalnih horizontalnih vezi v spojih. V višjih razredih sem v konstrukciji zagotavljal efektivne horizontalne in vertikalne vezi. Prikazal sem uporabo metode namišljene odstranitve elementov, kjer je potrebna nelinearna analiza odziva konstrukcije ob odstranjenem stebru. S to metodo preverimo ali je konstrukcija robustna. Kjer te metode nisem smel uporabiti zaradi dogovorjene omejitve poškodb, sem nato uporabil metodo ključnih elementov, s katero varujemo elemente, ki so ključnega pomena za globalno stabilnost konstrukcije. Pri zgradbi, ki je uvrščena v najvišji razred, sem predstavil poenostavljen postopek analize ocene tveganj. S pomočjo določenih predpostavk sem izračunal finančno tveganje za konstrukcijo v njeni življenjski dobi v primeru trka vozila. Prikazal sem tudi vpliv posameznih parametrov, ki so bili upoštevani v analizi, na rezultat končnega tveganja.
Abstract (ePrints, secondary language): The diploma thesis deals with structural robustness of steel framed buildings. The design guidance and the strategies in accordance with the Eurocodes (SIST EN 1990 and SIST EN 1991), applicable for structural robustness and designing for the avoidance of disproportionate collapse are presented. The structure has to be robust to withstand extra load in the cases of accidental events like fire, explosions, impact or the consequences of human error. SIST EN 1991-1-7 provides a method to categorise buildings in consequences classes. The building categorisation considers the building type, occupancy and size. For lower consequences of failure class we presented the provision of a minimum level of horizontal tying. In higher classes, the provision of vertical ties was provided in addition. We also showed the notional removal method, where the nonlinear response of the structure was checked in case of a removed column. The key element method was used, where the limit of admissible local damage was exceeded. We presented the design of most important structural elements to sustain the nominal accidental load. For the building in the class with the highest consequences of failure, a simplified systematic risk assessment was undertaken, taking into account the event of a vehicle impact. The total economic risk was monitored while changing the input data about the frequency and amplitude probability of the event.
Keywords (ePrints, secondary language): robustness;steel framed buildings;progressive collapse;accidental load;key element;notional removal
ID: 8313066