20.500.12556/RUL-116197
Projektiranje armirano-betonske AB diafragme za zaščito gradbene jame ob upoštevanju potresne obtežbe
magistrsko delo št.: 141/II. GR
Design of reinforced-concrete diaphragm wall for the protection of excavation pit taking into account the seismic load
master thesis
Namen magistrske naloge je analiza vpliva potresne obtežbe na zaščitno konstrukcijo za izkop gradbene jame - večkrat sidrano debelostensko AB diafragmo. V okviru naloge je bila izvedena nelinearna geostatična analiza zaščitne konstrukcije ob upoštevanju ustreznega modela tal in tehnoloških postopkov gradnje. Za stanje po izkopu gradbene jame smo analizirali vpliv jakosti potresne obtežbe na obremenitve AB diafragme. Geostatične in dinamične numerične analize (time-history) so bile izvedene po metodi končnih elementov v pogojih ravninskega deformacijskega stanja (Plaxis 2D) z upoštevanjem medsebojnega vpliva med temeljnimi tlemi in konstrukcijo, pri čemer je bil za temeljna tla upoštevan napredni nelinearen materialni model z upoštevanjem histereznega dušenja ob upoštevanju sestave in lastnosti tal s konkretne lokacije. Na podlagi goeostatičnih in dinamičnih analiz je bil dimenzioniran karakteristični prečni prerez AB diafragme in analiziran velikostni red projektnih obremenitev pridobljenih iz geostatičnih in dinamičnih analiz. V okviru naloge je izvedena tudi primerjava rezultatov dinamične numerične analize s psevdostatično analizo, ki jo predpisuje Evrokod 7 (EC-7) in analitično metodo Mononobe-Okabe.
The purpose of this Master Thesis is to analyse the reinforced-concrete diaphragm wall for the protection of deep excavation pit with a consideration to the seismic load. Firstly, nonlinear geostatic analysis of the diaphragm wall was performed, considering the ground model and technological process of construction. After the diaphragm wall was installed and the pit excavation was completed, dynamic analysis were performed to determine the impact of seismic load on the diaphragm wall and geotechnical anchors. All geostatic and dynamic numerical (time-history) analysis were performed with finite element method in plain strain conditions (Plaxis 2D) by taking into account the soil-structure interaction. The advanced nonlinear material model with hysteresis damping was adopted for the soil in order to achive adequate soil behavior during seismic loading. The ground data and soil charachteristic taken from the specific location were adopoted for the analyses. Based on the analyses the typical cross-section of diaphragm wall was designed and the results of nonlinear geostatic and dynamic (time-history) analysis were compared. Within the scope of this thesis the comparison between dynamic (time-history) analysis, pseudo-static analysis according to EC-7 and analytical method according to Mononobe-Okabe was performed and results discussed.
gradbeništvo
magistrska dela
GR
armirano-betonska diafragma
zaščita gradbene jame
dinamična analiza
potresna obtežba
Plaxis 2D
psevdostatična analiza
Mononobe-Okabe
civil engineering
master thesis
reinforced-concrete diaphragm wall
excavation pit protection
dynamic analysis
seismic load
Plaxis 2D
pseudo-static analysis
Mononobe-Okabe
true
false
false
[Ž. Plevel]
Slovenski jezik
Angleški jezik
Magistrsko delo/naloga
2020-05-22 08:45:21
2020-05-22 08:45:26
2022-12-12 14:17:16
0000-00-00 00:00:00
2020
0
Ljubljana
2020
Ljubljana
XII, 94 str., [6] f. pril.
0000-00-00
NiDoloceno
NiDoloceno
NiDoloceno
0000-00-00
0000-00-00
0000-00-00
624.1:624.042.7(497.4)(043.3)
138967
20376067
3676.pdf
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https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=129611
3677.pdf
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https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=129612
Fakulteta za gradbeništvo in geodezijo
0
0
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