Górnictwo i Geoinżynieria
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ISSN 1732-6702
Issue Date
2011
Volume
R. 35
Number
Nr 2
Description
Journal Volume
Górnictwo i Geoinżynieria
R. 35 (2011)
Projects
Pages
Articles
Lubuski odcinek Odry - analiza stanu technicznego lewostronnego obwałowania rzeki Odry w km 432,60-442,80
(Wydawnictwa AGH, 2011) Asani, Anna
This article presents the results of the technical condition study of the embankments located on the left bank of the Oder river, at 432.60-442.80 km river section. It is a second class embankment, a length of 12.0 kilometres, which protects the following towns: Nowa Sól (Pleszówek), Koserz, Modrzyca, Otyń and Bobrowniki together with adjacent areas of agricultural crops. The scope of works was consistent with the standards and included: fieldwork (stocktalking, probing with DPL probe and small-diameter drilling), laboratory tests (to determine the leading parameters of soil: soil type, bulk density, humidity, degree of plasticity, filtration factor, the organic content, etc.) and assessing the technical condition of the embankment as for its effective flood protection. The studies indicate that the embankment is generally in the medium condition, and primarily the repair of embankments should be carried out in the most vulnerable parts of the landslide, ie at km 0+200-1+050 km 1+550, km 2+450 and km 5+330.
Projektowanie geotechniczne posadowienia turbiny wiatrowej
(Wydawnictwa AGH, 2011) Batog, Andrzej; Hawrysz, Maciej
This paper presents the geotechnical designing method of the wind turbine located in the Pyrzyce Wind Farm. The guidelines for the application of the investigation results obtained from the cone penetration testing for designing of those constructions were presented. The CPT results were used both to determine of geotechnical parameters of soils as well as to the estimation of the subsoil bearing capacity and the value of the foundation settlements. The comparative calculations based on the Polish Standard were performed and the usability, economical advantage and the high safety margin in case of the wind turbine foundation designing were demonstrated.
Analiza przemieszczeń poprzecznie obciążonej grupy pali w ośrodku liniowo sprężystym o cechach losowych
(Wydawnictwa AGH, 2011) Bauer, Jerzy; Puła, Wojciech; Wyjadłowski, Marek; Schleiss, Monika
A probabilistic analysis of limit serviceability state of a pile groups is presented in the paper. Pile heads are interconnected and loaded by a horizontal force. Interaction of piles and subsoil is modelled by a set of springs using classical method called Kx generator. Applying the response surface method for the displacement data calculated from the resulting static model, the reliability indices and sensitivity coefficients are computed for assumed variability of random Young's modulus and random thickness of upper soil layer.
Ocena wpływu domieszek do kruszywa 0-63 mm na poprawę jego wskaźnika nośności na podstawie wyników badań własnych
(Wydawnictwa AGH, 2011) Bednarek, Łukasz; Mazurek, Jakub Kazimierz
In the present study analyzed the effect of admixtures (fly ash, slag, and granulated lime) on the size of load ratio (CBR) of aggregate base, which was sandstone with granulation 0-63 mm. In addition, the fitness of the base material for its use on a foundation of roads. Based on primary blend of grain size was calculated size distribution of mixtures with dopant and found that improved markedly compared to the raw material. On the basis of the CBR rate was noted that used in this study had a positive dopant on the formation of CBR, causing even two and half fold increase in the value of this parameter. It also appeared that the material does not demonstrate a basic utility, as the material used for road foundation.
Wpływ obciążenia dynamicznego na parametry pracy złącza ciernego
(Wydawnictwa AGH, 2011) Brodny, Jarosław
The article presents the results of stand tests for friction joints under a dynamic load. The tests consisted of exerting an axial load (compression) on the friction joint on which a traverse was placed with a mass freely falling from a specific height. The dynamic characteristics of a friction joint's work were identified based on the tests carried out. The characteristics determine a variance in the value of the force transmitted by a friction joint during a dynamic load according to time. Variances in the value of axial forces in the clamps joints were also registered during the tests. The displacements of a friction joint's elements were recorded with a highspeed camera which also enabled to determine their speeds and accelerations. The tests results presented should be used in operating, designing and selecting a yield support for the conditions of a dynamic load hazard.