|
|
The Design of Deep Cut Securing
Štainerová, Lenka ; Boštík, Jiří (referee) ; Glisníková, Věra (advisor)
The aim is to design economical and above all safe securing a deep notch, both in the construction phase and throughout the use of the building. In the first part of the thesis Background research will be given an idea of the construction of the geotechnical point of view. The second part will contain the geotechnical design calculation. The third part will be proposed safety recommendations in terms of geotechnical monitoring.
|
|
|
Analysis of the procedure for design of trackbed
Svobodová, Nikola ; Břešťovský,, Petr (referee) ; Plášek, Otto (advisor)
The diploma thesis focuses on analysing the current Railway Infrastructure Administration methodology for designing the sleeper substructure concerning the construction's deformation resistance, its comparison with the multi-layered method, which is used in the road engineering and finite element method. It deals with various methodologies of determining the deformation resistance of the track substructure.
|
|
| |
|
|
Application of fiber reinforcement to improve soil mechanical properties
Šindelářová, Daniela ; Miča, Lumír (referee) ; Chalmovský, Juraj (advisor)
The goal of this thesis was the summarization of available information about Fiber-reinforced soil. In the past, many of the previous works were published around the world. This thesis compares what type of fibres are in previous studies used – especially material, their size and amount in the Fiber-reinforced soil. All of these parameters were quite various, some of the sources used small-sized fibres, some used large-sized fibres. The most common material was polypropylene, although it was not the only one. For example, natural fibres, other synthetic materials, and waste materials can be mentioned. The amount of the fibres in the soil is measured in a few different ways, so in this thesis are these ways compared. It is necessary to run laboratory tests to quantify the effect of the fibres on the mechanical engineering properties of the soil. These tests are quite different compared to tests run on the unreinforced soil, so these differences are mentioned. The ways, how Fiber-reinforced soil was tested in different studies, are compared. From laboratory tests can be mentioned triaxial shear test, direct shear test and for Fiber-reinforced soil typical pullout test. At the end of this thesis are said and compared material models available for Fiber-reinforced soil design.
|
|
| |
|
|
Development and validation of a hypoplastic model for soft clays incorporating rate effects and strength anisotropy
Jerman, Jan ; Mašín, David (advisor) ; Blahůt, Jan (referee) ; Hrubešová, Eva (referee)
The thesis presents modelling framework for soft clays. Soft clays typically occur in marine environment, coastal areas and along rivers, soft clay deposits are also associated with the periglacial conditions. Soft clay seabeds are also prevalent in locations used as foundations of various energy sources (renewable and hydrocarbon). Growing world population increased demand for land, and this, consequently, leads to seaward land reclamation for urban development in coastal areas. Thus, construction on soft soil deposits has become increasingly important as soft clays occur in locations of construction projects for city infrastructure. The stress-strain behaviour of soils, especially clayey soils, is well-known to be rate- dependent. This fact is relevant for specific engineering projects, where the long-term performance of constructions is of interest. This is particularly important for soft clays as the very high degree of compressibility in primary compression and during creep makes rate-dependent soil behaviour an important factor for geotechnical problems. Moreover, the slow slope movements of slow-moving landslides and creeping slopes are controlled mostly by shear creep properties of the shear-zone soil and the effective stress state. Thus, for the case of creeping landslide modelling, a...
|
|
|
Engineering geological survey of the dam of the Šeberák pond end a recommendation for remediation methods
Zimola, Petr ; Malát, Richard (advisor) ; Košťál, Jiří (referee)
This thesis deals with the dam of the Šeberák pond. This water reservoir is included in III. category of historical water works. The dam is currently showing minor defects, but could be seriously damaged by extraordinary circumstances. The aim of this thesis is to accomplish an engineering geological survey of the dam, to assess its competence and recommend remediation measures. For the purpose of the survey, core boreholes and dynamic penetration tests were performed. Soil samples were taken from the drilling cores for laboratory soil tests. Geomorphological, geological and hydrogeological conditions were described, one longitudinal geological section of the dam and four cross-sections were constructed. Based on evaluated field works and obtained data from the pond manager, the engineering geological conditions of the dam body were described. The most serious concern is the intensity of water seep throught the dam in flood situations. Solution options have been recommended for each part and problem of the dam.
|
|
| |
|
|
Analysis of the procedure for design of trackbed
Svobodová, Nikola ; Břešťovský,, Petr (referee) ; Plášek, Otto (advisor)
The diploma thesis focuses on analysing the current Railway Infrastructure Administration methodology for designing the sleeper substructure concerning the construction's deformation resistance, its comparison with the multi-layered method, which is used in the road engineering and finite element method. It deals with various methodologies of determining the deformation resistance of the track substructure.
|
|
|
Application of fiber reinforcement to improve soil mechanical properties
Šindelářová, Daniela ; Miča, Lumír (referee) ; Chalmovský, Juraj (advisor)
The goal of this thesis was the summarization of available information about Fiber-reinforced soil. In the past, many of the previous works were published around the world. This thesis compares what type of fibres are in previous studies used – especially material, their size and amount in the Fiber-reinforced soil. All of these parameters were quite various, some of the sources used small-sized fibres, some used large-sized fibres. The most common material was polypropylene, although it was not the only one. For example, natural fibres, other synthetic materials, and waste materials can be mentioned. The amount of the fibres in the soil is measured in a few different ways, so in this thesis are these ways compared. It is necessary to run laboratory tests to quantify the effect of the fibres on the mechanical engineering properties of the soil. These tests are quite different compared to tests run on the unreinforced soil, so these differences are mentioned. The ways, how Fiber-reinforced soil was tested in different studies, are compared. From laboratory tests can be mentioned triaxial shear test, direct shear test and for Fiber-reinforced soil typical pullout test. At the end of this thesis are said and compared material models available for Fiber-reinforced soil design.
|
guest ::
