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Mechanical analysis of the subsystem of the tower crane
Urbánek, Roman ; Venský, Jiří (referee) ; Fuis, Vladimír (advisor)
The bachelor thesis deals with the solution of a subsystem of a tower crane with a passive effect (NNTP). First part describes tower cranes and their parts. The following part is a description of the theoretical and physical laws of statics and dynamics. In the practical part, various states of motion of a specific modeled subsystem are calculated, which shows a trolley of the tower crane. The aim of the calculation of each configuration is to determine the numerical values of the contact forces in the links, to analyze the dynamic quantities and to evaluate the functionality of the links. Numerical values of unknown parameters were calculated by solving a system of linear equations in the calculation software Matlab.
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Back-analysis of instrumented load test of large-diameter bored pile using load-transfer method
Bírošík, Matej ; Koudela, Pavel (referee) ; Chalmovský, Juraj (advisor)
The thesis is divided into four parts. The first part is theoretical and consists of description of load-transfer method and its principal defined by (Reddy a ďaľší, 1998), where is explained calculating algorithm for predicting behaviour of loaded large-diameter bored piles. In the second part are all information about analysed instrumented load tests including measured values, which are interpreted by tables and graphs of load-transfer curves, load transfers in individual sections and shear friction values along the pile. This part also includes analyses of the influence of the pile axial stiffness uncertainty. The third part consists of parametric study. This study displays effects of different parameters on pile behaviour prediction during loading through load-transfer curves and load transfers in individual sections along the pile obtained from the programme developing at the Institute of Geotechnics, Faculty of Civil Engineering BUT in Brno, for large-diameter bored piles behaviour prediction. In the fourth part is evaluation and description of back-analysis of two instrumented load tests by already mentioned programme. The goal in the back-analysis was to reach the same parameters of load-transfer curves and load transfers in individual sections along the pile by surrounding soil parameters adjusting.
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Analýza soustav 6-ti těles s vazbami s pasivním účinkem
Krček, Aleš ; Marcián, Petr (referee) ; Fuis, Vladimír (advisor)
This bachelor thesis deals with analysis of the systém of six solids with links with passive effect. The first part deals with theory which includes basic terms of statics, description and characteristics of the neutral and passive links. The second part comprises of two examples that the influence of passive effects on the motional state are demonstrated on. Aim of each example is the calcuation of contact forces in links and the evaluation of function of links and the motional state. The solution is carried out with the computing software MATLAB.
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Utilization of pressuremeter tests for determination of load-transfer curves
Bírošík, Matej ; Zdražil,, Karel (referee) ; Chalmovský, Juraj (advisor)
The thesis is divided into seven parts. The first part is theoretical and consists of description of load-transfer method and its principal, description of load-transfer curves used for following inverse analysis and method for determining shaft friction in ß method. In the second part, there is an explanation of the determination of Ménard pressuremeter modulus from pressuremeter tests. The third part consists of the pressuremeter tests analysis and description of evaluating process of the pressuremeter modulus for different types of subsoil. In the fourth part states parametric study of load-transfer curves compiled on the basis of the pressuremeter tests, where we display an impact of input parameters on a load-settlement curves. The fifth part contains inverse analysis of pile load tests, which are set in similar geological conditions. Summary of used input parameters for individual load-transfer curves states in the sixth part. These parameters are responsible of achieving the best match of predicted and measured load-settlement curves. The last part is devoted to the thesis conclusion, which is the determination of parameters as inputs to the shape of load-transfer curves for bored piles with utilization of the pressuremeter tests.
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Mechanical analysis of the subsystem of the tower crane
Urbánek, Roman ; Venský, Jiří (referee) ; Fuis, Vladimír (advisor)
The bachelor thesis deals with the solution of a subsystem of a tower crane with a passive effect (NNTP). First part describes tower cranes and their parts. The following part is a description of the theoretical and physical laws of statics and dynamics. In the practical part, various states of motion of a specific modeled subsystem are calculated, which shows a trolley of the tower crane. The aim of the calculation of each configuration is to determine the numerical values of the contact forces in the links, to analyze the dynamic quantities and to evaluate the functionality of the links. Numerical values of unknown parameters were calculated by solving a system of linear equations in the calculation software Matlab.
|
|
|
Utilization of pressuremeter tests for determination of load-transfer curves
Bírošík, Matej ; Zdražil,, Karel (referee) ; Chalmovský, Juraj (advisor)
The thesis is divided into seven parts. The first part is theoretical and consists of description of load-transfer method and its principal, description of load-transfer curves used for following inverse analysis and method for determining shaft friction in ß method. In the second part, there is an explanation of the determination of Ménard pressuremeter modulus from pressuremeter tests. The third part consists of the pressuremeter tests analysis and description of evaluating process of the pressuremeter modulus for different types of subsoil. In the fourth part states parametric study of load-transfer curves compiled on the basis of the pressuremeter tests, where we display an impact of input parameters on a load-settlement curves. The fifth part contains inverse analysis of pile load tests, which are set in similar geological conditions. Summary of used input parameters for individual load-transfer curves states in the sixth part. These parameters are responsible of achieving the best match of predicted and measured load-settlement curves. The last part is devoted to the thesis conclusion, which is the determination of parameters as inputs to the shape of load-transfer curves for bored piles with utilization of the pressuremeter tests.
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Back-analysis of instrumented load test of large-diameter bored pile using load-transfer method
Bírošík, Matej ; Koudela, Pavel (referee) ; Chalmovský, Juraj (advisor)
The thesis is divided into four parts. The first part is theoretical and consists of description of load-transfer method and its principal defined by (Reddy a ďaľší, 1998), where is explained calculating algorithm for predicting behaviour of loaded large-diameter bored piles. In the second part are all information about analysed instrumented load tests including measured values, which are interpreted by tables and graphs of load-transfer curves, load transfers in individual sections and shear friction values along the pile. This part also includes analyses of the influence of the pile axial stiffness uncertainty. The third part consists of parametric study. This study displays effects of different parameters on pile behaviour prediction during loading through load-transfer curves and load transfers in individual sections along the pile obtained from the programme developing at the Institute of Geotechnics, Faculty of Civil Engineering BUT in Brno, for large-diameter bored piles behaviour prediction. In the fourth part is evaluation and description of back-analysis of two instrumented load tests by already mentioned programme. The goal in the back-analysis was to reach the same parameters of load-transfer curves and load transfers in individual sections along the pile by surrounding soil parameters adjusting.
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Analýza soustav 6-ti těles s vazbami s pasivním účinkem
Krček, Aleš ; Marcián, Petr (referee) ; Fuis, Vladimír (advisor)
This bachelor thesis deals with analysis of the systém of six solids with links with passive effect. The first part deals with theory which includes basic terms of statics, description and characteristics of the neutral and passive links. The second part comprises of two examples that the influence of passive effects on the motional state are demonstrated on. Aim of each example is the calcuation of contact forces in links and the evaluation of function of links and the motional state. The solution is carried out with the computing software MATLAB.
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