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Evaluation of loading test of jet-grouted piles
Čechová, Simona ; Račanský, Václav (referee) ; Chalmovský, Juraj (advisor)
The master thesis consists of a theoretical part and a practical part. In the theoretical part jet-grouting technology is described briefly. Mechanical properties of jet-grouted piles were characterized. Various estimation methods of ultimate pile bearing capacity are described in this thesis – analytical calculation of ultimate bearing capacity for bored piles and estimation of ultimate pile bearing capacity by analysis of load-displacement curve defined by CHIN (1970; 1972). Load transfer method for piles and hyperbolic load-transfer curve are introduced. As a part of the load-trasfer method analysis, a method of estimating ultimate pile shaft friction called beta method is defined. In the practical part were evaluated several static load tests of jet-grouted piles and were constructed their load-displacemnt curves. Then reverse analysis of the results from static load tests was performed using load-transfer method. Then ultimate pile bearing capacity was estimated using analytical calculation of pile bearing capacity for bored piles and using analysis of load-displacement curve with method by CHIN (1970; 1972). By evaluation of load transfer method and beta method ultimate shaft resistence for each pile was estimated. Results and load-displacement curves were compared.
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Determination of load-transfer functions for bored piles
Čechová, Simona ; Račanský, Václav (referee) ; Chalmovský, Juraj (advisor)
The thesis is consisted of theoretical and practical part. In theoretical part was described nowadays commonly used method for analysis of single axially loaded replacement piles defined by Masopust (1994). There was also explained principle of load transfer method and was done analysis of mobilization curves, which are applied abroad, and finally were defined essential entry parameters for construction of selected load transfer curves. In practical part method by Masopust (1994) was transformed, limit shear stresses and tip resistances were calculated and values of deformation parameters for constructing cubic root curve and hyperbolic load transfer curve were deterined. In the last step both types of load transfer curves were constructed for shaft and pile tip of a replacement pile in different depths in fine-grained soil and in coarse-grained soil.
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The teaching of regional geography in Montessori schools
Čechová, Simona ; Matějček, Tomáš (advisor) ; Kocová, Tereza (referee)
The teaching of regional geography in Montessori schools Abstract The goal of this thesis is to present the importance and position of the curriculum of regional geography and to analyze the approaches to teaching methods of regional geography, which are used in Montessori schools in the Czech Republic and are applicable in teaching geography in other types of schools. Specifically, we study pupils in the higher grades of primary schools and the lower grades of a grammar school. The work deals with this topic in two main parts. The first theoretical part is devoted to familiarization with the history of regional geography as a scientific discipline and, subsequently, with the functions and subject of study of regional geography in general. The next section deals with the curriculum and teaching of regional geography. At the end of the theoretical part, there are chapters devoted to Montessori education and methodology utilized in this thesis. The second part summerizes results of qualitative research, including the method of semi-structured interviews with teachers of regional geography and participatory observations in classes. At the end of the thesis, the summary results of qualitative research are proposed and further discussed. Keywords: Teaching geography, regional geography, Montessori, qualitative...
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Evaluation of loading test of jet-grouted piles
Čechová, Simona ; Račanský, Václav (referee) ; Chalmovský, Juraj (advisor)
The master thesis consists of a theoretical part and a practical part. In the theoretical part jet-grouting technology is described briefly. Mechanical properties of jet-grouted piles were characterized. Various estimation methods of ultimate pile bearing capacity are described in this thesis – analytical calculation of ultimate bearing capacity for bored piles and estimation of ultimate pile bearing capacity by analysis of load-displacement curve defined by CHIN (1970; 1972). Load transfer method for piles and hyperbolic load-transfer curve are introduced. As a part of the load-trasfer method analysis, a method of estimating ultimate pile shaft friction called beta method is defined. In the practical part were evaluated several static load tests of jet-grouted piles and were constructed their load-displacemnt curves. Then reverse analysis of the results from static load tests was performed using load-transfer method. Then ultimate pile bearing capacity was estimated using analytical calculation of pile bearing capacity for bored piles and using analysis of load-displacement curve with method by CHIN (1970; 1972). By evaluation of load transfer method and beta method ultimate shaft resistence for each pile was estimated. Results and load-displacement curves were compared.
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Determination of load-transfer functions for bored piles
Čechová, Simona ; Račanský, Václav (referee) ; Chalmovský, Juraj (advisor)
The thesis is consisted of theoretical and practical part. In theoretical part was described nowadays commonly used method for analysis of single axially loaded replacement piles defined by Masopust (1994). There was also explained principle of load transfer method and was done analysis of mobilization curves, which are applied abroad, and finally were defined essential entry parameters for construction of selected load transfer curves. In practical part method by Masopust (1994) was transformed, limit shear stresses and tip resistances were calculated and values of deformation parameters for constructing cubic root curve and hyperbolic load transfer curve were deterined. In the last step both types of load transfer curves were constructed for shaft and pile tip of a replacement pile in different depths in fine-grained soil and in coarse-grained soil.
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