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Projektiranje armirano-betonske AB diafragme za zaščito gradbene jame ob upoštevanju potresne obtežbe : magistrsko delo št.: 141/II. GR
Plevel, Žiga (Author), Pulko, Boštjan (Mentor) More about this mentor... This link opens in a new window, Kosič, Mirko (Co-mentor)

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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.

Language:Slovenian
Keywords:gradbeništvo, magistrska dela, GR, armirano-betonska diafragma, zaščita gradbene jame, dinamična analiza, potresna obtežba, Plaxis 2D, psevdostatična analiza, Mononobe-Okabe
Work type:Master's thesis/paper (mb22)
Tipology:2.09 - Master's Thesis
Organization:FGG - Faculty of Civil and Geodetic Engineering
Year:2020
Publisher:[Ž. Plevel]
Number of pages:XII, 94 str., [6] f. pril.
UDC:624.1:624.042.7(497.4)(043.3)
COBISS.SI-ID:20376067 Link is opened in a new window
Views:211
Downloads:131
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Secondary language

Language:English
Title:Design of reinforced-concrete diaphragm wall for the protection of excavation pit taking into account the seismic load : master thesis
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.

Keywords:civil engineering, master thesis, reinforced-concrete diaphragm wall, excavation pit protection, dynamic analysis, seismic load, Plaxis 2D, pseudo-static analysis, Mononobe-Okabe

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