Uporaba presiometrskih meritev za napoved nosilnosti vertikalno obremenjenih pilotov

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Language:	Slovenian
Year of publishing:	2007
Source:	Ljubljana
Typology:	2.09 - Master's Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[A. Robas]
UDC:	531.7:624.131.5:624.154/.155(043.3)
COBISS:	3591521
Views:	2146
Downloads:	599
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Secondary language:	English
Secondary title:	Application of pressuremeter measrements for the prediction of bearing capacity of vertcaly loaded piles
Secondary abstract:	Pressuremeter is an in situ test widely in operation in France, and in the last decade it has won recognition all over the world, as well as in Slovenia. Basically it is used to determinate the soil characteristics needed for the design of foundations. This thesis deals with the calculation of the bearing capacity of the vertically loaded piles using different methods based on pressuremeter measurements. The thesis deals only with buildings on deep foundations and because the use of Eurocode 7 will become obligatory in Slovenia at the beginning of 2008, we wanted to check how these new regulations influence the bearing capacity computation. For this purposes a short introduction of Eurocode 7 is represented in the second chapter. Further on, the Ménard pressuremeter is presented with the description of the test, from calibration of the equipment, preparation of borehole, running the test to the evaluation of the results (ISO/DIS 22476-4). Based on extensive records of the pressuremeter tests carried out, the present work presents results from seven different locations all over Slovenia, where 15 structures were designed. On those locations we calculated the bearing capacity using different design approaches presented in Eurocode 7 (DA1 and DA2) and different procedures (basic method 1a and alternative methods 1b and 1c) where the determination of the characteristic values plays an important role, and using global safety factor. The main aim of the thesis was to check the difference between the bearing capacity of vertically loaded piles by using the global safety factor and by Eurocode 7, to determine the model factor for the alternative method of the pile bearing capacity that is presented in the National appendix to Eurocode 7, as well as to determine the global factor of safety between the ultimate bearing capacity measured from the load tests on test piles and the bearing capacity calculated by Eurocode 7 based on pressuremeter tests. We also studied the influence of the number of the executed probes on the bearing capacity calculation. Final conclusions are that the bearing capacity calculated by Eurocode 7 compared to the one calculated by the global safety factor is on average by 25% higher, which brings us to cheaper foundations. Besides, the determined global safety factor between the ultimate bearing capacity measured from the static load tests on test piles and the bearing capacity calculated on the base of pressuremeter tests by the Eurocode 7 is higher than 2.
Secondary keywords:	pressurmeter;field tests;bearing capacity of verticaly loaded piles;
File type:	application/pdf
Type (COBISS):	Master's thesis
Thesis comment:	Univ. v Ljubljani, Fakulteta za gradbeništvo in geodezijo
Pages:	XXVIII, 204 str., pril.
Type (ePrints):	thesis
Title (ePrints):	Uporaba presiometrskih meritev za napoved nosilnosti vertikalno obremenjenih pilotov
Keywords (ePrints):	gradbeništvo;magistrska dela;presiometer;terenske preiskave;nosilnost pilotov;vertikalno obremenjeni piloti;
Keywords (ePrints, secondary language):	pressurmeter;field tests;bearing capacity of verticaly loaded piles;
Keywords (ePrints, secondary language):	pressurmeter;field tests;bearing capacity of verticaly loaded piles;
ID:	8312188