The aim of the diploma thesis is the proposal of a bridge structure in the direction of Přerov – Lipník in the cadastral territory of the Osek nad Bečvou. A bridge is used to overcome the road III/43612 in km 93,550, the stream Lubeň and a field trip. From tree alternatives is selected a post-tensioned two-beam concrete struction and assessed according to the limit states including an impact of phased construction according to the European standards. Also it is prepared a drawing documentation, an accompanying report and a visualization of the beam.

The aim of the diploma thesis is the proposal of a bridge structure in the direction of Frýdek-Místek - Mosty u Jablunkova. A bridge is used to overcome the local road and Malý javorový stream. From three alternatives is selected a post-tensioned two-beam concrete struction and assessed according to the limit states. It is developed clear and detail drawings and visualization of the bridge.

The subject of master thesis is expressway R2 in Slovakia through a valley. Height of the construction is limited by a railway line and a local road. From two designed variants was chosen one and futher examined. The span lenght of bridge fields is 24,5 +5 x 30+24,5m. The structure was designed according to ultimate and serviceability limite states and construction stages were considered in model. In master thesis was processed structural design report, drawnings, visualization and engineering report.

The dynamic behaviour of lightweight footbridges is often susceptible to HumanInduced Loads (HILs). Generally HILs are taken into account as moving harmonicfunctions in which the loading frequency represents the step frequency of the pedestrians.In this way, there may be resonance if the loading frequencies fall within therange of the natural frequencies of the bridge, potentially compromising the serviceabilitylimit state of the structure. Therefore, it is important to understand how toaddress and model HILs in the context of lightweight and slender structures. Furthermore,interesting effects can be considered in the field of footbridge dynamics,such as the Human Structure Interaction (HSI) effect. The HSI effect can be understoodwithin a framework in which pedestrians behave as Tuned Mass Dampers(TMDs), possibly modifying the dynamic behaviour of the footbridge. In addition,the evaluation of the dynamic response of a footbridge is usually made through atime consuming dynamic analysis using the Finite Element Method (FEM). Mostof the analysis of this type of slender structures rely on a prescribed stationary harmonicloading scenario, and this is usually done in the context of a walking crowdevent and not much attention is given to running load events.The aims of this research project are to study the influence of running and walkingloads on the dynamic response of footbridges as well as to investigate and developa closed-form method in order to simulate the dynamic behaviour of footbridgessubjected to HILs. This has been achieved by comparing different approachesin order to simulate running load events for a small number of pedestrians withrespect to experimental results (Paper I). In addition, the simply supported beamand the clamped-clamped beam (Paper II) are studied when subjected to a movingharmonic load in a closed-form framework. Then, a comparison between normalwalking and normal running conditions is made. Finally, a general closed-formsolution for the moving harmonic load problem (Paper III) is developed using the2D Bernoulli–Euler beam theory for a continuous beam system on elastic supports.The results from the study indicate that running is more critical than walking fora single pedestrian crossing, despite the fact that it is easier to achieve a steadystate condition in a normal walking event than in a normal running event. Finally,the general solution of the moving harmonic load problem is found and it can beused to solve any load spectra in the time domain, with its static component, for ageneral multi-span beam system. / Slanka och lätta gångbroar är ofta känsliga för dynamisk belastning från fotgängare.Dessa laster betraktas ofta som harmoniska funktioner där lastfrekvensenberor på stegfrekvensen. Resonans kan uppstå om stegfrekvensen sammanfallermed någon av brons egenfrekvenser vilket potentiellt kan överskrida föreskrivnavibrationsnivåer. Kännedom om dynamisk fotgängarlast är därför viktig, framföralltför dynamiskt känsliga konstruktioner. Samverkan mellan fotgängare ochbro kan också ge upphov till intressanta samband. Fotgängarna kan i detta sammanhangliknas med en massdämpare som kan ändra brons dynamiska egenskaper.Dynamiska analyser av gångbroar utförs ofta med FEM-analyser som kan varatidskrävande. Vanligen baseras analyserna på föreskrivna stationära harmoniskalaster, ofta baserat på gånglaster och sällan med beaktande av löparlaster.Syftet med denna uppsats är att undersöka inverkan av löpar- och gånglasters inverkanpå gångbroars dynamiska respons samt att utveckla en analytisk metod föratt simulera dessa laster och dess respons på broar. Detta har utförts genom attjämföra olika sätt att simulera löparlaster och jämföra broresponsen med experimentelldata (artikel 1). En analytisk lösning för rörliga harmoniska laster redovisasför fallet fritt upplagd och fast inspänd balk (artikel 2), med vilken inverkan av gångochlöparlaster jämförs. En mer generell analytisk lösning för rörliga harmoniskalaster (artikel 3) baseras på Bernoulli-Euler balkteori för kontinuerliga balkar påeftergivliga upplag.Resultaten från föreliggande arbete visar att för en enskild fotgängare är fallet medlöparlast mer kritiskt än gånglast, trots att det är lättare att uppnå ett fortvarighetstillståndför gånglaster jämfört med löparlaster. Den generella lösningen för rörligaharmoniska laster som redovisas kan användas för att lösa godtyckliga lastspektrai tidsdomän, inklusive dess statiska komponent, för generella balkar. / <p>QC 20210302</p>

Main purpose of the diploma thesis is to design a multi-span double-girder bridge which spans the valley of a river. The bridge spans main road of 1st class. Main superstructure of a bridge is made of prestressed concrete which is built span by span. Structure was designed according to limit states in construction stages as well as during the service. Everything was designed according to the latest European normatives. It contains static calculation and drawing documentation.

The aim of this thesis is design of the loadbearing structure of a bridge. Out of two proposed variants was chosen prestressed girder deck of 5 spans. The bridge is built span-by-span in a formwork supported by launching girders. Calculation of load cases is made in software Midas Civil 2021 and Scia Engineer 18.1. The construction is evaluated considering the ultimate limit state and serviceability limit state. The design and evaluation were made according to valid standards.

The subject of this thesis is the design of a prestressed box girder construction with several spans. Two variants are designed and for detailed solving was chosen the variant of the box girder. The length of loadbearing structure is 212 m, the longest span has 60 m. The calculation of load effects is done by software Scia Engineer 19.1. Drawing part is done by software Allplan Engineering 2021. The thesis includes drawings, representation of the construction proces, visualization and a structural design. Designing and assessments were made according to currently valid European standarts.

The final thesis is focused on design of valley bridging on I/38 road at the Havlickuv Brod bypass. The thesis contains study of the bridging area. For detailed assessment was chosen, from three variants, a two-beam cross-section girder of 4 spans. Load-bearing structure is designed as cast-in-place, post-tensioned, concreted at fixed falsework without phased construction. The serviceability limit state and the ultimate limit state were assessed. The thesis contains, apart from structural design, drawings and visualizations of the bridge.

The subject of the thesis is to design and consider steel superstructure of a composite steel-concrete road bridge. It is a continuous beam with seven spans of 36,0 + 57,0 + 75,0 + 90,0 + 75,0 + 57,0 + 36,0 = 426 meters. The superstructure consists of welded I-beams, which pass into closed box girder. The calculations take into account the construction phase.

This thesis occupies with the design of the road bridge over the stream Živný, a railway lane and a projected road between Běleč village and Husinec village. There are designed three variants of bridges. The variant no. 1 – continuous box girded beam – was chosen for the detailed analysis. The pre-stressed concrete road bridge is designed and evaluated according to European standards – Euro codes. The sequential construction influence and its impact on the construction is also considered in the calculations. The drawing documentation and the visualization of the bridge are made.