The aim of my work was to project a rural road with an inosculation to a bridge in cadastral plain Komařice. During projection I followed valid norms and laws. Two versions of the rural road had been created and after a consultation with the executive of this graduation theses, one of these have been chosen to be worked out into the stage building licence documentation. The designed rural road should improve accessability to the plots, perform a function of antierosive and scenery composition.

Self-consolidating concrete (SCC) is a new, innovative construction material that can be placed into forms without the need for mechanical vibration. The mixture proportions are critical for producing quality SCC and require an optimized combination of coarse and fine aggregates, cement, water, and chemical and mineral admixtures. The required mixture constituents and proportions may affect the mechanical properties, bond characteristics, and long-term behavior, and SCC may not provide the same inservice performance as conventional concrete (CC). Different SCC mixture constituents and proportions were evaluated for mechanical properties, shear characteristics, bond characteristics, creep, and durability. Variables evaluated included mixture type (CC or SCC), coarse aggregate type (river gravel or limestone), and coarse aggregate volume. To correlate these results with full-scale samples and investigate structural behavior related to strand bond properties, four girder-deck systems, 40 ft (12 m) long, with CC and SCC pretensioned girders were fabricated and tested. Results from the research indicate that the American Association of State Highway Transportation Officials Load and Resistance Factor Design (AASHTO LRFD) Specifications can be used to estimate the mechanical properties of SCC for a concrete compressive strength range of 5 to 10 ksi (34 to 70 MPa). In addition, the research team developed prediction equations for concrete compressive strength ranges from 5 to 16 ksi (34 to 110 MPa). With respect to shear characteristics, a more appropriate expression is proposed to estimate the concrete shear strength for CC and SCC girders with a compressive strength greater than 10 ksi (70 MPa). The author found that girder-deck systems with Type A SCC girders exhibit similar flexural performance as deck-systems with CC girders. The AASHTO LRFD (2006) equations for computing the cracking moment, nominal moment, transfer length, development length, and prestress losses may be used for SCC girder-deck systems similar to those tested in this study. For environments exhibiting freeze-thaw cycles, a minimum 16-hour release strength of 7 ksi (48 MPa) is recommended for SCC mixtures.

This diploma thesis focuses on diagnostics of bridge structures. First part of this diploma thesis will focus on theoretical knowledge about bridge structures and common diagnostic techniques suited for examining material priperties of samples taken from structure. Second part of this thesis will focus on practical use of experiments used in diagnostic branch. I will be doing visual observation of concrete structure followed by experiments on core samples. End of thesis will be evaluating structure from global perspective and will deliver specific sugestions for renovation.

The aim of this thesis is the relocation of roads II/431 and III/4317 near Kojátky village. This is due to the unsuitable layout of current routes which were poorly arranged because of too many horizontal and vertical curves with small radius. Another reason was a bad technical state of bridge structures, one of them was in serious disrepair. The project deals with the relocation of current roads to more suitable routes including the option allowing access to the nearby estates and the connection to the existing cart tracks. The project also addresses two bridge structures across the streams.

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The subject of this thesis is to design a new slab structure instead of the steel concrete slab. The structure of the new load bearing structure is post-stressed cast-in-situ slab with continuous slab structure consisting of three spans. The slab is pre-stressed by monostrands. The load bearing structure is evaluated for first and second limit state too. The construction is modeled in software named Scia Engineer 2011.

This thesis deal with improvement in bridge precision measurment deflection for Mostní a silniční Ltd. Its goal is through analysis of process of measurment and factor location, which have fundamental influence on measurment precision. First, theoretic part, represents the company, formulates problems and goals of thesis, history of bridges, world disasters, sort of bridges measurments, bridges evaluation and questions of giant transportation. In second, practical part, problems with measurment and its evaluation are described. Results are evaluated and corrective measures and recommendation are proposed in the final part.

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.

Trafikverket förfogar över närmare 4000 järnvägsbroar i olika skick och ålder runt om i landet. Beståndet är i ständigt behov av underhåll och erfordrar kontinuerliga kontroller. Den här rapporten är utformad som en skadeutredning på en enkelspårig järnvägsbro söder om Solvarbo i Säter kommun. Järnvägsbron är i drift och här passerar över 10 000 tåg/år. Allt från snabbtåg till godståg. Bron är av typ balkbro, fritt upplagd över väg. Rapporten är gjord i samråd med företaget Reinertsen Sverige AB. En utredning av bron utfördes 2013 av Reinertsen Sverige AB i vilken beskrivs att ena landfästet kläms mot överbyggnaden till följd av rörelse. De skador som då noterades var att de rörliga lagren var kraftigt snedställda, överbyggnaden var i kontakt med grusskifte samt att en avsevärd uppsprickning av landfäste hade skett. Skadorna bedömdes påverka konstruktionens funktion och ansågs behöva en fortsatt utredning där brons rörelser och skador studeras mera för att kunna ta ställning till framtida åtgärder. Målet med detta arbete är att analysera hur bron har förändrats sedan upprättandet samt att besvara vad som kan ha föranlett förändringarna. Rapporten tas fram som underlag för att kunna ta ställning till framtida åtgärder enligt ovanstående. För att fastställa hur bron rört sig utfördes en inmätning med en totalstation. Därefter upprättades aktualiserade ritningar över bron som sedan jämfördes med befintliga originalritningarna. För att visa vad som kan föranlett förflyttningen gjordes en glidningskontroll med olika laster. Utöver det utfördes en kartläggning av skador på konstruktionen som sedan utvärderades. Jämförelsen visar en kraftig förflyttning av det östra landfästet mot det västra. Rörelsen av landfästet har gjort att de båda frontmurarna lutar i vertikalled.  Glidningskontrollen slår fast att det inte föreligger risk för glidning av enbart jordtryck men att det föreligger risk för glidning vid belastning av tåg samt bromskraft från tåg. På grund av slitage samt bristande underhåll har skador åsamkats på konstruktionen. De synliga skador som återfunnits på bron är sprickor, kalkutfällningar, snedställning av lager samt korrosion av lager och synlig armering. Det som kunde fastställas är hur bron har förflyttat sig i horisontal- och vertikalled och att en orsak till det östra landfästets förflyttning är de horisontella krafter som de passerande tågen för med sig. Genom att undersöka de skador som uppkommit på bron och jämföra dessa med de krav som Trafikverket har på sina broar kunde det fastställas att några av dessa skador beror på bristande underhåll. / The Swedish Transport Administration manage nearly 4,000 railway bridges in different condition and age around the country. These bridges is in constant need of maintenance and requires continuous inspections. This thesis is designed as a damage investigation on a single-track railway bridge south of Solvarbo in Säter municipality. The railway bridge is in operation and serves over 10,000 trains a year, everything from speed trains to freight trains. The bridge is built as a beam bridge, simply supported over a road. The report is made in consultation with the company Reinertsen Sweden AB. An investigation of the bridge was carried out in 2013 by Reinertsen Sweden AB, which describes that the abutments lean onto the superstructure due to motion. The damage noted was that the movable bearings are seriously tilted, the superstructure is in contact with the breast wall and several cracks were found on the abutment. These damages were considered to affect the function of the structure and found needing further investigation to consider possible future actions. The objective of this thesis is to analyze how the bridge has changed since it was built and to find what may be the underlying causes to these changes. The report is aimed to constitute a foundation and a decision basis for further measures. To determine how the bridge has moved a surveying with a total station was performed. Thereafter updated drawings of the bridge were established and later compared with the existing original drawings. To understand why the bridge has moved a sliding control was performed with different loads. In addition an inspection of structural damages was carried out and evaluated. Comparing the drawings showed a significant displacement of the eastern abutment towards the western. The movement of the abutment has made the two bearing walls tilt. The sliding control showed that there is no risk of sliding when only earth pressure is considered, but when loads of the trains are applied there is a risk of sliding. Wear of the bridge has caused several damages in the bridge structure. The visible damages found were cracks, efflorescence, bearing misalignment and corrosion of bearings and visible reinforcement. What could be determined was that the bridge has moved horizontally and vertically and one reason for the movement in the eastern abutment could be the horizontal forces brought by a passing train. By examining the damage caused to the bridge and compare them with the requirements of the Swedish Transport Administration it could be established that some of these damages have raised due to lack of maintenance.

This diploma thesis deals with the phases measuring deformation of the bridge construction and railway superstructure on the bridge over the river Dyje in Breclav and its surroundings. The main goal was to determine the longitudinal displacements of the rail web and the bridge structure. The object of this thesis was also transverse displacements which have been caused mainly due to temperature changes. The introduction describes the location. The following section discusses the methodology terrestrial deformation measurements and calibrations selected surveying devices. Furthermore, there is stated the processing of measurements and the calculations. In conclusion, the thesis evaluates the longitudinal and transverse displacements, which are shown in the annexes.