Analiza nabrekanja temeljnih tal globokega vkopa Dragučova

magistrsko delo

Janez Kastigar (Author), Ana Petkovšek (Mentor), Matej Maček (Co-mentor)

Abstract

Magistrska naloga obravnava nabrekanje temeljnih tal v globokem avtocestnem vkopu Dragučova, kjer so se kmalu po izgradnji začele pojavljati neravnine na vozišču v obliki neenakomernih dvižkov. V uvodnem delu naloge je na kratko opisana zgodovina geoloških raziskav in gradnje vkopa. V nadaljevanju so predstavljene metode za prepoznavanje nabrekalnega potenciala in teorija računanja vertikalnih deformacij z nelinearno analizo in modelom »Soft soil«, ki ga uporablja program PLAXIS. V osrednjem delu naloge so najprej predstavljeni rezultati laboratorijskih preiskav miocenskega laporja, s katerimi smo določili osnovne geotehnične lastnosti, nabrekalni potencial in izmerili nabrekalne deformacije in nabrekalni tlak. Rezultate laboratorijskih meritev smo uporabili pri nelinearni analizi vertikalnih deformacij, s katero smo računali dvižke temeljnih tal od začetka gradnje vkopa. Nato smo z enakimi parametri izdelali še materialni model vkopa, s katerim smo določili dvižke temeljnih tal in pričakovani časovni razvoj deformacij. Rezultate nelinearne analize in materialnega modela smo primerjali in ugotovili zadovoljivo ujemanje velikosti napovedanih deformacij. Ocenili smo delež že mobiliziranih nabrekalnih deformacij in čas mobilizacije preostalega deleža le teh.

Keywords

gradbeništvo;magistrska dela;AC globoki vkop;analiza;nabrekanje;mehčanje;materialni model;

Data

Language:	Slovenian
Year of publishing:	2016
Typology:	2.09 - Master's Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[J. Kastigar]
UDC:	624.131.1(497.4)(043)
COBISS:	7512929
Views:	1865
Downloads:	522
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Ground swelling analysis of the deep cut Dragučova
Secondary abstract:	The master thesis analyses swelling deformation that appeared in the deep motorway cut at Dragučova near Maribor. Soon after construction the deformation appeared as a pavement differential heave in the longitudinal and transversal direction. In the introduction the thesis presents geological investigation for the design and the history of the deep cut construction. It continues with the introduction of the methods for the recognition of swelling potential and with the theoretical background of a nonlinear analysis of vertical strain and the Soft soil model used by the programme PLAXIS. In the main part of the thesis the results, gathered with the experimental work and including index properties, swelling potential, swelling deformation and swelling pressure, are presented. These results were used for conventional computation of nonlinear vertical deformations and as input for the deep cut material model made in PLAXIS. The calculation results of vertical swelling deformations determined by using the two methods are in good agreement. Finally, the ratio of already mobilized heave and the time development of the expected deformation in the future are estimated.
Secondary keywords:	civil engineering;master of science thesis;Highway deep cut;analysis;swelling;softening;material model;
File type:	application/pdf
Type (COBISS):	Master's thesis/paper
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	X, 61 str.
ID:	9154764