magistrsko delo št.: 141/II. GR
Žiga Plevel (Author), Boštjan Pulko (Mentor), Mirko Kosič (Co-mentor)

Abstract

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.

Keywords

gradbeništvo;magistrska dela;GR;armirano-betonska diafragma;zaščita gradbene jame;dinamična analiza;potresna obtežba;Plaxis 2D;psevdostatična analiza;Mononobe-Okabe;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [Ž. Plevel]
UDC: 624.1:624.042.7(497.4)(043.3)
COBISS: 20376067 Link will open in a new window
Views: 1276
Downloads: 482
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Other data

Secondary language: English
Secondary title: Design of reinforced-concrete diaphragm wall for the protection of excavation pit taking into account the seismic load
Secondary abstract: 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.
Secondary keywords: civil engineering;master thesis;reinforced-concrete diaphragm wall;excavation pit protection;dynamic analysis;seismic load;Plaxis 2D;pseudo-static analysis;Mononobe-Okabe;
Type (COBISS): Master's thesis/paper
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: XII, 94 str., [6] f. pril.
ID: 11878553