The topic of this thesis is a design of stress ribbon bridge across the deep valley. The construction of the footbridge contains stress ribbon bridge with external cables and final prestressing tendons. The bridge deck is in a parabolic arc and the suspension cables are in two bend down parabolic arcs. The construction is reproduced for evaluation of longitudinal direction in the Ansys 14.0 programme and for transversal direction in the Scia Engineer 15.1 programme. The model was solved in several phases, nonlinerally. The pier was reproduced in the Scia Engineer 15.1 programme for local effect of action. The construction was evaluated for dynamic action. The construction is assessed according to the actual EN standards.

The subject of the thesis is design and check of steel load-bearing structure of a footbridge. The footbridge spans the river Svitava in the town Blansko. The span length is 24 metres. The structural design is spatial bar structure with two main trusses. The upper and lower chords are curved in the shape of circular arch and they are connected by diagonal bars. In the level of the upper and lower chords the beams are connected by floor beam. Horizontal rigidity of the upper and lower construction area is secured by bracings. The bridge deck is laid on the lower floor beam. The solution is the result of the comparison and evaluation of two variants.

The subject of the final thesis is timber footbridge for pedestrians and cyclists over the Desna river in Loucna nad Desnou village. The length of the footbridge is 30 m, width 3 m and height is variable from 4 to 5 m. The footbridge is covered with roof inclination of 20° in transverse direction and the roof is arch in longitudinal direction. Roofing is metal sheet. The structure is three-dimensional truss consists of two truss connected by rafters, floor beams and by members of bracing. The 2D-truss consists of bottom chord, top arch chord and webs. There are end posts made of streel bracing frames. The material of structure is mostly glued laminated timber, then timber and steel. The steel is used for connectors and steel bracing frames.

The scope of thesis is to design a curved arch footbridge. The main structure consists of composite deck supported by steel arch. The focus is on finding optimal shape of arch and proper cross-sections of elements. Bridge is analysed according to limit states.

The subject of this diploma thesis is the location and design of a theater building in the body of a regional center - the town of Uherské Hradiště. The existing theater building is housed in a rented Sokolovna (sport-cultural building) on Tyršovo Square. There is also a small stage in a house on Mariánské náměstí. The capacity of the auditorium of the large scene is 370 spectators, corresponding to the needs of the city and the region. However the size of the stage is completely inadequate, the height of the flytower, the absence of back and side stages, Also, the workshops and warehouses are currently located away from the theater. The project addresses the current unfavorable situation of the theater, which is, in the long-term, interest to the city of Uherské Hradiště itself. For my own proposal I chose an unused site inside a meander of the Morava River. Besides direct contact with the river, the place is marked by its wide visual links to the surrounding areas and, at present, also the separation from the city center. As a result of the proposal, my hypothesis is that the overall regeneration and attraction of the embankment area will be enhanced by a proposed placement of a footbridge connecting both river banks. My aim was to build links between the theater and its outdoor spaces, which open up to the city with its publicly accessible areas. I believe that because of the chosen location on the embankment of the Morava river not only do I propose a public building but to extend the city center itself. One of the main objectives was to connect the natural element of the river and the surrounding environment with art, culture and the city itself.

The theme of this doctoral thesis is research of footbridges curved in plan that are formed by stress ribbon. Recently, several noteworthy curved pedestrian bridges, which decks are suspended on their inner edges on suspension or stay cables, have been constructed. However, curved stress ribbon bridges have not been built so far. The goal of this study was to answer the question whether the use of curved stress ribbon structures is even possible. For this reason, in the first stage feasibility study of these structures has been prepared. Knowledge of both curved pedestrian bridges, which decks are suspended on their inner edge and straight stress ribbon has been used. For the mathematical modeling FEM software ANSYS was used. The obtained findings were further used to design a new type of a modern, aesthetic curved bridge for pedestrians. The structure is formed by slender reinforced deck, which is through the steel brackets on the inner side stiffened by steel section. Torsion of the deck, caused by curved structure and asymmetrical cross-section, is reduced by cable situated in the handrail. Footbridge span is 45 m, arc camber in plan is 10 m, free bridge width is 3 m. Described is a general structure effect, detail static and dynamic analysis was carried out. Designed structure including construction stages were experimentally verified on a fully physical functional 1:6 scale model. The thesis describes the model analogy used for the design of the model, its structural design and its implementation. The model was subjected to a series of load tests including the final ultimate strength test. Performed tests confirmed the good match of calculation with the reality, correctness of the design and high resistance of designed construction. Acquired results and experiences from design and realization of model form the basis for practical realization of studied structures.

[pt] Dentre as diversas metodologias de detecção de danos, destacam-se os métodos de identificação de danos baseados na resposta da vibração (Vibration-based damage identification - VBDI), uma vez que a deterioração presente em elementos estruturais influencia diretamente na resposta dinâmica global e local da estrutura ocasionando alterações nos parâmetros dinâmicos. As diferentes abordagens encontradas na revisão de literatura para detecção dinâmica de danos focam principalmente em estruturas unidimensionais ou retas, que, por sua vez, podem não representar o comportamento dinâmico real de estruturas arrojadas como pontes e passarelas com geometria diferenciada. Alguns índices modais, nomeadamente curvatura modal, flexibilidade modal e energia de deformação modal, foram avaliados para uma passarela de aço com geometria curva. Para isso utilizou-se um modelo de elementos finitos da mesma, de onde foram extraídos os modos de vibração tridimensionais. Além disso, um índice recentemente proposto, denominado vetor resultante, que incorpora coordenadas modais tridimensionais, também é avaliado e comparado aos índices mencionados anteriormente. Os resultados mostram que a precisão dos índices na localização de danos está correlacionada com a região da estrutura onde o dano se encontra. Conclui-se então que para detecção de dano em uma estrutura real, é necessário que se utilize mais de um índice de dano. O impacto da magnitude do dano na acurácia dos índices é também estudado. A influência do dano nas vigas adjacentes e como isso se reflete nos índices também é investigada, a fim de evitar ambiguidade na localização de danos, e para direcionar corretamente programas de inspeção e monitoramento da integridade estrutural. / [en] Among the various damage detection methodologies, the Vibration-based damage identification (VBDI) methods stand out, since the deterioration present in structural elements directly influences the global and local dynamic response of the structure, causing changes in the dynamic parameters. The different approaches found in the literature review for dynamic damage detection focus mainly on one-dimensional or straight structures, which in turn may not represent the actual dynamic behavior of bold structures such as bridges and footbridges with different geometry. Some modal indices, namely modal curvature, modal flexibility, and modal strain energy were evaluated for a steel footbridge with curved geometry. For this purpose, a finite element model of it was used, from which the three-dimensional mode shapes were extracted. In addition, a recently proposed index, called resultant vector, which incorporates three-dimensional modal coordinates, is also evaluated and compared to the aforementioned ones. The results show that the accuracy of the indices for damage localization is correlated with the region of the structure where the damage is located. It is then concluded that for damage detection in a real structure, it is necessary to use more than one damage index. The impact of the damage magnitude on the accuracy of the indices is also studied. The influence of damage in adjacent beams and how this is reflected in the indices is also investigated in order to avoid ambiguity in damage location, and to correctly direct inspections and structural integrity monitoring programs.

The aim of this doctoral thesis is the research of the plan curved footbridges with the deck supported by arch. The research is preceded by the survey of present findings about arch structures with upper deck. The summary of reasons and difficulties of design of plan curved structures follows. The appropriate approach for design of plan curved structure is searched on the basis of methods for design of straight structure. The design of arch which is subjected to minimal bending moments is emphasised. At first, the structure is designed in the same way as straight structure and the limit plan curvature (for which the method is not suitable anymore) is sought. Then the approach based on method of inversion of suspended cable is examined and adapted for designing of plan curved arch geometry. The approach is thoroughly analysed through calculation model and experimentally verified on physical model in scale 1:10. The process of design, construction and testing of the physical model is described in detail. Measured deformations and stresses are compared with expected behaviour based on numerical analysis. The comparison proves good correlation between calculation and measurement, as well as high load bearing capacity of the structure.

[pt] As estruturas civis durante toda a sua vida útil estão sujeitas a diversas ações de deterioração, desgastes ou corrosão de seus membros, que podem gerar variações em suas características físicas. Estas ações podem causar danos ao seu funcionamento, podendo chegar até ao colapso, em casos mais extremos. Além disso, o avanço tecnológico que permite a concepção de estruturas cada vez mais esbeltas, e que geram assim possíveis vibrações excessivas, elevam o monitoramento estrutural a um patamar de extrema importância e atenção na ótica dos gestores desses sistemas. Particularmente, no caso de obras de infraestrutura como pontes e passarelas, as grandes dimensões são características significativas que tornam as práticas de monitoramento e inspeção mais difíceis. Dessa forma, com o objetivo auxiliar no monitoramento estrutural e direcionar inspeções visuais, diversos métodos de identificação de danos são estudados com base nas características dinâmicas das estruturas, como as frequências naturais e os modos de vibração. A revisão de literatura, porém, demonstra que há uma dificuldade na aplicação desta identificação em estruturas mais complexas de grande porte. Assim, este trabalho visa estudar esta dificuldade e propor uma solução baseada na construção de um índice, composto pelos modos de vibração. Além disso, através da aplicação de algoritmos de aprendizado de máquina e de reconhecimento de padrões, como as Redes Neurais Artificiais (RNAs), propõese aumentar a eficiência do processo de localização espacial e quantificação dos danos. Em seguida, a metodologia proposta é, então, aplicada em um modelo de passarela metálica inspirado em uma estrutura real presente na região do Terminal Centro Olímpico da cidade do Rio de Janeiro – RJ. A identificação de danos é estudada através da aplicação do índice proposto, incorporando as redes neurais e avaliando do impacto da variação dos parâmetros da RNA na eficiência global da detecção. / [en] Civil structures are subjected to different deterioration and corrosion actions throughout their entire service life, which can generate variations in their physical characteristics. These actions can cause damage to its functioning, and possibly leading to collapse in more severe cases. In addition, technology development which allows the design of increasingly slender structures, can produce excessive vibrations, which elevates the importance ofstructural monitoring to a higher level from the perspective of infrastructure managers. Particularly, in the case of bridges and walkaways, due to their large dimensions make monitoring and inspection even more difficult. Thus, with the aim of providing methods to assist in structural monitoring and facilitate visual inspections, several damage identification methods are investigated, which are based on structures dynamic characteristics, such as natural frequencies and mode shapes. The conducted literature review revealed that there is a difficulty in applying these identification methods in large-scale and complex structures. Thus, this research aims to study these barriers and propose a solution based on the development of a new damage index based on the structure s mode shapes. Furthermore, through the application of machine learning algorithms and pattern recognition, such as Artificial Neural Networks (ANN), it is proposed to increase the efficiency of the damage identification and quantification process. Then, the proposed methodology is tested numerically on a steel footbridge model inspired by a real structure located in the region of the Olympic Center Terminal, in the city of Rio de Janeiro – RJ. The damage identification method is studied through the application of the proposed damage index, incorporating the neural network and assessing the impact of ANNs parameters variation in the global efficiency of the damage detection method.

'The inspiration behind this project is the new urbanist idea which combines residential development with green spaces for leisure and sport as well as mixed use commercial areas and storage. The layout of the area is a grid formed by 100m squared plots with residential houses with personal yards. These plots are grouped as complexes and between each complex is a communal green space. On the outside of the inner grid, there are mixed use apartment buildings and a high commercial floor. The square is dominated by a smaller multi-purpose building with a fluid outside space in which community events can be organized. Diagonally connected to the square is a park with a playground and an area with patio seating in addition to three villa houses. The park leads to the river embankment, into which tiered seating will be created. Around the hotel, there is another park with a multi-generational playground. In the northern part is located hotel renovated from the original industrial buildings with added ground floor restaurant area. Around hotel there is a park with green space and multi-generational playground. The terrace houses are located in the northeastern part of the complex and feature an attractive riverside view. Row houses line the the main road and are buffered from street noise by a line of trees. Typology and placement of other, separate houses is inspired by colonies of worker-houses eg. Baťa houses in Zlín. In between each ground these is no fence and are only separated a slight depression in the green.