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Use of ultrasonic phased array technique for non-destructive testing of the HRK socket at the VVER 440 reactor
Nováček, Jan ; Kusmič, David (referee) ; Juliš, Martin (advisor)
The bachelor's thesis describes the design of a test system for non-destructive ultrasonic inspection of the HRK on the nuclear reactor VVER 440. Using the designed test system, the basic material interface of the HRK 22K steel shell with the weld on ZIO-8 was verified by the advanced ultrasonic Phased array method. The functionality of the designed test system consisting of the TOPAZ 32 device, the 5L64-A32 probe and the STIX manipulator was tested on three standards with variously large artificial defects. The sensitivity of the test system was set using an artificial defect in the form of a groove 0.7 mm high based on simulations in CIVA 2020 software. The functionality and sufficient sensitivity of the system with a deviation of ± 1 mm for the height of the indication and ± 5 mm for the length of the indication were confirmed by performing experimental measurements on standards.
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Design of bridge on the motorway D48
Holuša, Adam ; Nováček, Jan (referee) ; Zich, Miloš (advisor)
Diploma thesis deals with design of a new bridge on motorway D48 located on bypass of Frýdek – Místek. Total spread of the bridge is 113 meters. Thesis includes 3 studies. For next assesment was chosen concrete girder box construction with 3 spans. Bridge is bulit on falsework. Structural analysis includes influences of construction by TDA method. Load effect is solved in Scia Engineer 18.0. The assessment of the bridge was made according to EC.
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Influence of seismic load on behavior of reinforced concrete frame.
Zlámalová, Pavlína ; Nováček, Jan (referee) ; Zich, Miloš (advisor)
The aim of this work is a static analysis of the reinforced concrete frame structure loaded by the effects of seismic loading. The work deals with the solution of multi-storey reinforced concrete structure designed for common loading conditions and further for possibilities of strengthening of the structure on effect of seismic loading. In the first phase of the work, the static analysis and the design of the main load-bearing elements of the frame structure (columns and main girder) were carried out for the ultimate limit state for the standard design load. In the second phase, the static analysis of the structure for the effects of accidental actions from low and high seismicity was performed and it was assessed whether the main load-bearing elements of the structure would continue to comply. Given that the structure did not satisfy the accidental actions of seismic loading, various ways of structure strengthening were designed and analyzed for their impact on the global and local behaviour of the structure. Also the designing of additional steps for structural reliability were performed. Static analyzes were performed in Scia Engineering and RFEM Dlubal software.
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Analysis of Strengthening Reinforced Concrete Slabs Against Punching Shear
Nováček, Jan ; Halvoník,, Jaroslav (referee) ; Vítek,, Jan (referee) ; Zich, Miloš (advisor)
The thesis deals with the topic of the punching shear of the reinforced concrete structures with a focus on an additional strengthening. The introduction of the thesis is devoted to the research of various types of strengthening against the punching and their efficiency on an increase of load-bearing capacity. Material nonlinear models are formed for strengthening by an additional concrete head, a slab concrete overlay and a column concrete jacketing. The results from the nonlinear analysis are compared with various standards, including the new generation of Eurocodes. Detailed analysis of an additional concrete head is performed regarding governing inputs, which influence load-bearing capacity. Theoretical assumptions were applied to the design of the additional concrete head, where long-term measurement has been performed for the comparison with the analytical assumptions and the material nonlinear model. The second part of the thesis deals with the strengthening of foundation structures, which are accessible only from one surface. There is presented newly developed technology for strengthening by the additional shear reinforcement with the combination of bonding and mechanical anchorage. The assessment of proposed technology is defined for the strengthening against punching shear based on tested samples. The detailed technological procedure is described, including the procedure for the application on the structures below ground water level. Long-term measurement of the shear reinforcement was carried out for the strengthened foundation slab.
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Design of precast concrete hall
Prášek, Martin ; Nováček, Jan (referee) ; Zich, Miloš (advisor)
Master’s thesis describes the structural design and static analysis of selected elements of prefabricated reinforced concrete industrial building, that will be used as storage hall. Purpose of thesis is elaboration of assembly drawings of the project documentation and drawings of formwork and reinforcement assembly of selected elements. Calculations were performed in computer programs for static analysis SCIA Engineer 16, IDEA StatiCa and FIN EC. Drawing were made in programs Allplan 2016 and AutoCad 2015.
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Highway box girder bridge
Ondrůšková, Kamila ; Nováček, Jan (referee) ; Zich, Miloš (advisor)
The subject of the diploma thesis is the bridging design of the valley and Doľanský potok on the D1 motorway in the section Jánovce - Jablonov in Slovakia. Three variants of bridging have been designed and then compared. A post-tensioned construction of the box girder cross section was chosen as the most suitable variant, which was further checked. The static calculation was drawn up according to European standards.
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Foundation of tall buildings
Kubínek, Michal ; Nováček, Jan (referee) ; Zich, Miloš (advisor)
The diploma thesis describes design and assessment of foundation of tall building. Existing reinforced concrete slab-pile foundation structure was assessed as unsatisfactory at the ultimate limit state. Design of two new options was processed: slab-pile foundation with adjusted slab thickness and slab foundation without piles. Both options were assessed at the ultimate limit state and the serviceability limit state. Foundation options were designed as water-impermeable structure of white tank and meet requirements for this type of structures.
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The machinery for open air space and building maintenance
Nováček, Jan ; Dvořák, František (advisor) ; Růžička, Miroslav (referee)
This bachelor thesis has mainly an analytical character and summarizes the results of an extensive survey of the market made by author. Its aim is to provide an overview of the machines mostly used for the maintenance of the free areas and objects and to briefly describe the activities and works performed by them. Further the machines for the maintenance of the airports surfaces, sporting grounds, green belts and objects are described.
First part of the thesis describes the analysis of the activities carried out during this maintenance, whereas in the second one the author pays attention to the typical examples of the machines and appliances used for this maintenance, to their technical parameters and use values. The third part deals with the assessment of the machines from various aspects, the procedures for an expert evaluation of the machines are designed and the expected trends of the future development outlined
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Design of a one-span slab bridge
Dorko, Patrik ; Nováček, Jan (referee) ; Nečas, Radim (advisor)
Bachelor thesis deals with the design of slab bridge structure.The purpose of the bridge is to transfer traffic across a river. This work includes design of two potential variants. The chosen variant is a slab of trapezoidal cross-section made from prestressed concrete, which was assessed to serviceability limit state and ultimate limit state. Internal forces were determined by computing program Scia Engineer 2015 and compared with manual calculation, using method of resisting width. This work also includes static analysis and drawing documentation.
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