Uporaba šolske potresne mize za simulacijo obnašanja konstrukcij med potresi

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Language:	Slovenian
Year of publishing:	2009
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[M. Brozovič]
UDC:	624.042.7(043.2)
COBISS:	4757601
Views:	1727
Downloads:	858
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	ǂThe ǂuse of an instructional shake table for simulation of a seismic response of structures
Secondary abstract:	In the thesis the behavior of structures during earthquakes is investigated by using the instructional shake table. The main objective of the work was aimed at preparing the various experiments, which are remarked for education of future engineers and general public awareness of earthquake risk. In the first, introductory part, a brief overview of some research centers, which are using shake tables or reaction walls to explore seismic response of buildings, is prepared. In the Section entitled Structures and earthquakes the global characteristics of structures (i.e. strength, ductility, stiffness and damping) that affect the dynamic behavior of structures are briefly summarized. The principle of design force reduction and capacity design method are also explained. In addition to the above, selected damage to buildings, which have occurred during the recent L’Aquila earthquake in Italy, is elaborated. The next section examines the components and the use of the instructional shake table and a review of selected experiments carried out within the framework of University Consortium on Instructional Shake Tables (UCIST). The University of Ljubljana is the partner of the UCIST and was in this way joined to a group of more than a hundred universities including to the most reputable such as University of Stanford and the University of California, Berkeley. In the experimental work a specimen, which symbolically represents the three-storey building, was prepared. The specimen was designed to meet the seismic capacity of the table and to clearly present certain phenomena behavior of structures during the ground movement. Twenty-five experiments in which we demonstrate various forms of mode shapes, the soft storey effect, torsional behavior due to the stiffness or mass irregularities, the concentration of seismic forces in the ground floor and the response of structures for different earthquakes, were performed. Experiments have been carefully documented on a CD so that they are easily accessible to the general public. Conducted experiments show that the instructional shake table is good educational tool, which when properly applied, helps in understanding the dynamic behavior of structures.
Secondary keywords:	graduation thesis;instructional shake table;constructions;earthquakes;simulation;eksperiment;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. Ljubljana, Fakulteta za gradbeništvo in geodezijo
Pages:	XII, 99 str.,
Type (ePrints):	thesis
Title (ePrints):	The use of an instructional shake table for simulation of a seismic response of structures
Keywords (ePrints):	šolska potresna miza;konstrukcije;potresi;simulacija;eksperiment
Keywords (ePrints, secondary language):	instructional shake table;constructions;earthquakes;simulation;experiment
Abstract (ePrints):	V tej nalogi obravnavamo obnašanje konstrukcij med potresi s pomočjo šolske potresne mize. Glavni cilj naloge je bil usmerjen v pripravo različnih eksperimentov, ki so namenjeni izobraževanju bodočih inženirjev ter osveščanju širše javnosti o potresnem tveganju. V prvem, uvodnem delu, smo pripravili kratek pregled nekaterih raziskovalnih centrov, kjer z uporabo potresnih miz ali reakcijskih sten raziskujejo potresni odziv stavb. V poglavju z naslovom Konstrukcije in potresi smo opisali globalne karakteristike konstrukcij, ki vplivajo na njihovo dinamično obnašanje. To so nosilnost, duktilnost, togost in dušenje. Predstavili smo princip redukcije potresnih sil in metodo načrtovanja nosilnosti ter osnovna načela za zasnovo potresnoodpornih konstrukcij. Poleg omenjenega smo opisali nekatere poškodbe na stavbah, ki so se zgodile med nedavnim potresom L'Aquila v Italiji. V naslednjem poglavju opisujemo sestavne dele in upravljanje šolske potresne mize. Naredimo pregled izbranih eksperimentov izvedenih v okviru Združenja univerz za šolske potresne mize (UCIST), v katerega je vključena tudi Univerza v Ljubljani, ki je s tem povezana z več kot sto univerzami med katerimi so tudi najbolj ugledne kot na primer Univerza v Stanfordu in Kalifornijska Univerza, Berkeley. V eksperimentalnem delu naloge smo opisali preizkušanec, ki predstavlja tri-etažno stavbo. Lastnostni preizkušanca so takšne, da ustrezajo kapaciteti potresne mize, njegov odziv pa je dovolj nazoren za prikaz nekaterih fenomenov obnašanja konstrukcij med gibanjem tal. Sledi opis petindvajsetih eksperimentov s katerimi smo prikazali različne lastne nihajne oblike, pojav mehke etaže, torzijsko gibanje zaradi neenakomerno razporejene togosti ali mas po tlorisu konstrukcije, koncentracijo potresnih sil v pritličju konstrukcije in odziv konstrukcij za različne potrese. Eksperimente smo skrbno dokumentirali na zgoščenki, da so lahko dostopni širši javnosti. Opravljeni eksperimenti kažejo, da je šolska potresna miza dober učni pripomoček, ki ob primerni uporabi, pomaga pri razumevanju dinamičnega obnašanje gradbenih konstrukcij.
Abstract (ePrints, secondary language):	In the thesis the behavior of structures during earthquakes is investigated by using the instructional shake table. The main objective of the work was aimed at preparing the various experiments, which are remarked for education of future engineers and general public awareness of earthquake risk. In the first, introductory part, a brief overview of some research centers, which are using shake tables or reaction walls to explore seismic response of buildings, is prepared. In the Section entitled Structures and earthquakes the global characteristics of structures (i.e. strength, ductility, stiffness and damping) that affect the dynamic behavior of structures are briefly summarized. The principle of design force reduction and capacity design method are also explained. In addition to the above, selected damage to buildings, which have occurred during the recent L’Aquila earthquake in Italy, is elaborated. The next section examines the components and the use of the instructional shake table and a review of selected experiments carried out within the framework of University Consortium on Instructional Shake Tables (UCIST). The University of Ljubljana is the partner of the UCIST and was in this way joined to a group of more than a hundred universities including to the most reputable such as University of Stanford and the University of California, Berkeley. In the experimental work a specimen, which symbolically represents the three-storey building, was prepared. The specimen was designed to meet the seismic capacity of the table and to clearly present certain phenomena behavior of structures during the ground movement. Twenty-five experiments in which we demonstrate various forms of mode shapes, the soft storey effect, torsional behavior due to the stiffness or mass irregularities, the concentration of seismic forces in the ground floor and the response of structures for different earthquakes, were performed. Experiments have been carefully documented on a CD so that they are easily accessible to the general public. Conducted experiments show that the instructional shake table is good educational tool, which when properly applied, helps in understanding the dynamic behavior of structures.
Keywords (ePrints, secondary language):	instructional shake table;constructions;earthquakes;simulation;experiment
ID:	8311529