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Steel-Concrete Columns Composed of High-Strength Materials
Röder, Václav ; Štěpánek, Petr (referee) ; Studnička,, Jiří (referee) ; Vičan,, Josef (referee) ; Karmazínová, Marcela (advisor)
The main objective of this thesis is the verification of the buckling strength of the composite compression members which were made from high-strength materials. This thesis is divided into four main chapters which are interconnected. The first chapter summarizes the current state of the problem of the compression members. The basis of this part is the elementary theories and researches, the task of this text is attempted to understand and obtain normative procedures which are important for practical use. The second part deals with the theoretical analysis of composite column, mainly with the examination of the individual effects on the buckling strength. The result of the first and the second parts is analytical algebraic equations which determine the buckling strength of the member. The third part contains the numerical analysis, which leads to create a numerical model of the compression column. The numerical model is used for the verification of the theoretical analysis and for the investigation of the behaviour of the column loaded by axial force. The last part deals with the experimental verification of the previous analyses. There are tested various types of the composite columns, which were made of steel with a yield strength up to 455 MPa and of the concrete with a cube compression strength up to 102 MPa. Experimental results confirmed the high reliability of centrally loaded column and every tested columns failed by flexural buckling. The final step is evaluation and comparison of the results obtained from previous four parts. It was founded that design criteria for centrally loaded steel-concrete column are too conservative and design relationships doesn´t use the positive properties of high-strength materials for economic design.
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Load-bearing structure of sport hall
Králíček, Jiří ; Pešek, Ondřej (referee) ; Balázs, Ivan (advisor)
The aim of the master thesis is design and check the timber construction of the sports hall in two variants. The first variant is a frame, which is formed by three steel columns. The roof structure is made from timber trusses, which is pin-supported beam above both fields. The second variant is a frame, which is formed by three steel-concrete columns. The roof structure is made from timber glulam beam of saddle shape, which is continuous over both fields. Spatial rigidity of the structure is ensured by steel bars. The second variant is calculated in detail by hand and the structure drawings are attached. Input static models and auxiliary static models were created in SCIA Engineer 18.1.
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Entrance hall of multi-storey building in university area
Jež, Matěj ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The objective of the bachelor thesis is to design and verify sufficient resistance of load-bearing construction system and cladding made of structural glass. The object is located in university campus at the suburban area of the city of Ostrava, in district Ostrava Poruba. Floor plan is 8,5 x 12 m. The object is composed of six floors and its total height is 21 m. The object is connected to rest of the building. Main load-bearing system consists of frame made of composite steel and concrete rectangular columns and steel beams. Staircase steel beam and reinforced concrete slab are ensuring spatial rigidity. The object was designed according to currently valid standards using ultimate limit state and serviceability limit state verification.
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Steel Structure of a Winter Stadium
Lobreis, Jan ; Pilgr, Milan (referee) ; Štrba, Michal (advisor)
The work is focused on assessing the structure of urban winter stadium, which will be located in Brno - Komarov. Winter stadium is designed according to standarts of ice hockey with a capacity of approximately 7 000 spectators. Of the 5 850 seating, 1 050 stalls and 100 in the VIP areas. Construction of hockey stadium is made of steel and steel-concrete columns, which together with composit transverse beam, reinforced concrete slab and bracings provide rigidity. Columns are supported by a set of bored piles with capitals. Roofing of the main part of the winter stadium is designed using a flat space frame having a maximum height of 4,5 m. Roof for entrance halls are design by a system of truss girder and purlins, which are hardened bracings to increase spatial rigidity. The structures are made of steel S 355 and concrete C 25/30. For designing steel structures was used software Scia ENGINEER and IDEA RS. Steel columns and composit beams are calculated by hand calculation. The total length of the hockey stadium is 111,5 meters, width outside the entrance hall is 82,02 m and the total width at the entrance hall is 96,85 m. The height of the building at the highest point is 25,6 meters.
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Roofing of railway station "Brno - Main Station"
Jež, Matěj ; Pešek, Ondřej (referee) ; Karmazínová, Marcela (advisor)
The objective of the master thesis is to design and verify sufficient resistance of load-bearing construction system of main station roofing in Brno. The plan shape is irregular, maximal plan shape dimensions are around 260 x 260 m. The roof structure consists of standardised grid. The structure has variable height, roof top edge is 25,060 m above terrain. In this paper, two variants of the structure are compared.
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Entrance hall of multi-storey building in university area
Jež, Matěj ; Melcher, Jindřich (referee) ; Karmazínová, Marcela (advisor)
The objective of the bachelor thesis is to design and verify sufficient resistance of load-bearing construction system and cladding made of structural glass. The object is located in university campus at the suburban area of the city of Ostrava, in district Ostrava Poruba. Floor plan is 8,5 x 12 m. The object is composed of six floors and its total height is 21 m. The object is connected to rest of the building. Main load-bearing system consists of frame made of composite steel and concrete rectangular columns and steel beams. Staircase steel beam and reinforced concrete slab are ensuring spatial rigidity. The object was designed according to currently valid standards using ultimate limit state and serviceability limit state verification.
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|
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Load-bearing structure of sport hall
Králíček, Jiří ; Pešek, Ondřej (referee) ; Balázs, Ivan (advisor)
The aim of the master thesis is design and check the timber construction of the sports hall in two variants. The first variant is a frame, which is formed by three steel columns. The roof structure is made from timber trusses, which is pin-supported beam above both fields. The second variant is a frame, which is formed by three steel-concrete columns. The roof structure is made from timber glulam beam of saddle shape, which is continuous over both fields. Spatial rigidity of the structure is ensured by steel bars. The second variant is calculated in detail by hand and the structure drawings are attached. Input static models and auxiliary static models were created in SCIA Engineer 18.1.
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|
|
Steel Structure of a Winter Stadium
Lobreis, Jan ; Pilgr, Milan (referee) ; Štrba, Michal (advisor)
The work is focused on assessing the structure of urban winter stadium, which will be located in Brno - Komarov. Winter stadium is designed according to standarts of ice hockey with a capacity of approximately 7 000 spectators. Of the 5 850 seating, 1 050 stalls and 100 in the VIP areas. Construction of hockey stadium is made of steel and steel-concrete columns, which together with composit transverse beam, reinforced concrete slab and bracings provide rigidity. Columns are supported by a set of bored piles with capitals. Roofing of the main part of the winter stadium is designed using a flat space frame having a maximum height of 4,5 m. Roof for entrance halls are design by a system of truss girder and purlins, which are hardened bracings to increase spatial rigidity. The structures are made of steel S 355 and concrete C 25/30. For designing steel structures was used software Scia ENGINEER and IDEA RS. Steel columns and composit beams are calculated by hand calculation. The total length of the hockey stadium is 111,5 meters, width outside the entrance hall is 82,02 m and the total width at the entrance hall is 96,85 m. The height of the building at the highest point is 25,6 meters.
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Steel-Concrete Columns Composed of High-Strength Materials
Röder, Václav ; Štěpánek, Petr (referee) ; Studnička,, Jiří (referee) ; Vičan,, Josef (referee) ; Karmazínová, Marcela (advisor)
The main objective of this thesis is the verification of the buckling strength of the composite compression members which were made from high-strength materials. This thesis is divided into four main chapters which are interconnected. The first chapter summarizes the current state of the problem of the compression members. The basis of this part is the elementary theories and researches, the task of this text is attempted to understand and obtain normative procedures which are important for practical use. The second part deals with the theoretical analysis of composite column, mainly with the examination of the individual effects on the buckling strength. The result of the first and the second parts is analytical algebraic equations which determine the buckling strength of the member. The third part contains the numerical analysis, which leads to create a numerical model of the compression column. The numerical model is used for the verification of the theoretical analysis and for the investigation of the behaviour of the column loaded by axial force. The last part deals with the experimental verification of the previous analyses. There are tested various types of the composite columns, which were made of steel with a yield strength up to 455 MPa and of the concrete with a cube compression strength up to 102 MPa. Experimental results confirmed the high reliability of centrally loaded column and every tested columns failed by flexural buckling. The final step is evaluation and comparison of the results obtained from previous four parts. It was founded that design criteria for centrally loaded steel-concrete column are too conservative and design relationships doesn´t use the positive properties of high-strength materials for economic design.
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