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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

Dynamická analýza konstrukce zatížená seismickým zatížením / Dynamic analysis of structure with seismic loads

Šnajdárková, Jana January 2016 (has links)
This thesis focuses on creation of two models of high-rise construction - beam and shell. A dynamic analysis is performed on these models. The selected program is RFEM software and the created high-rise construction is Hearst Tower skyscraper, which is interesting for its diagrid system around its perimeter. There is described process of creating both models and associated problems. Dynamic analysis is performed using standard EN 1998-1. There belongs calculations of sufficient number of modal shapes, spectral analysis and time analysis. Then the results are compared on selected point on the both models.
32

Des données accélérométriques au comportement dynamique des bâtiments existants / From accelerometric records to the dynamic behavior of existing buildings

Fernández Lorenzo, Guillermo Wenceslao 17 October 2016 (has links)
L'objectif de cette thèse est de simuler l'histoire temporelle de la réponse d'un bâtiment de grande hauteur sous sollicitation sismique et de proposer des méthodologies simplifiées qui reproduisent correctement une telle réponse. Initialement, un modèle tridimensionnel par éléments finis est produit afin de valider sa fiabilité pour simuler le comportement réel du bâtiment pendant les mouvements du sol, enregistrés à l'aide d'accéléromètres. Il est proposé d'améliorer la précision du modèle numérique en imposant de multiples excitations, compte-tenu des effets de basculement et de la variabilité spatiale sur la sollicitation d'entrée. L'utilisation de fonctions de Green empiriques est proposée pour simuler la réponse sismique directement à partir d'enregistrements d'événements passés, sans avoir besoin de dessins de construction ni d'étalonnage des paramètres mécaniques. Une méthode de sommation stochastique, déjà utilisée pour prédire les mouvements du sol, est adoptée pour générer des signaux synthétiques à des hauteurs différentes du bâtiment, par extension du chemin de propagation des ondes du sol à la structure. Une représentation simplifiée du bâtiment comme une poutre homogène Timoshenko est proposée pour simuler la réponse sismique directement à partir des enregistrements des vibrations ambiantes. Des paramètres mécaniques équivalents sont identifiés à l'aide de l'interférométrie par déconvolution en termes de dispersion des ondes, de fréquences naturelles et de rapport de vitesse des ondes de cisaillement et de compression dans le milieu / The aim of this thesis is to simulate the time history response of a high rise building under seismic excitation and provide simplified methodologies that properly reproduce such response. Firstly, a detailed three-dimensional finite element model is produced to validate its reliability to simulate the real behavior of the building during ground motions, recorded using accelerometers. It is proposed to improve the accuracy of the numerical model by imposing multiple excitations, considering rocking effect and spatial variability on the input motion. The use of empirical Green's functions is proposed to simulate the seismic response directly from past event records, without the need of construction drawings and mechanical parameters calibration. A stochastic summation scheme, already used to predict ground motions, is adopted to generate synthetic signals at different heights of the building, extending the wave propagation path from the ground to the structure. A simplified representation of the building as a homogeneous Timoshenko beam is proposed to simulate the seismic response directly from ambient vibration records. Equivalent mechanical parameters are identified using deconvolution interferometry in terms of wave dispersion, natural frequencies and shear to compressional wave
33

Nové brněnské hlavní nádraží a jeho veřejná prostranství / Brno New Train Station and its Public Spaces

Zrníková, Kamila January 2020 (has links)
The subject of proposal is a new dominant of the city of Brno. It is a building which will affect panorama of the city, a building which will be important part of a new South district and a new Brno Railway Station. The building will become orientation point in long-distance views as well as in the area. The proposal works with a building which is open and alive thanks to mix-use and public access on different height levels. Greenery forms the corner of the building and creates it’s identity. The base for architectural study became urban concept designed as a pre-diploma project. Important element of the concept is axis which draws the greenery from the river Svratka into the area and connects it with the new station. The Europoint – proposed building – becomes termination of the axis. The building is situated on a unique site which requires unique concept. The motive of the house is greenery and future vision of buildings which enrich surroundings in some ways. The basic volume is triangular and uses area of the site on maximum level with corner towards boulevard. This corner becomes the central element, especially from entry and view from the boulevard. I recreated the corner using vegetation into green and living. The green corner gives a new perspective on creating exposed corners, adds value to the urban area and creates identity of the building. The green motive intertwines with the building from entrance hall up to the bar at the highest floor. The volume of the building is defined by the inside usage and then form follows function. When choosing the functions I took into account needs of the area and took advantage of high-rise building. Commercial areas in the ground floor, administration centre of Czech Railways and conference rooms were created. The administrative use is added by co-working in the middle if the building, the upper part offers flats with view over Brno and in the crown is the highest placed bar in Brno.
34

Mrakodrap " EVO" (Experimentální výškový objekt) / Skyscraper "EVO"

Kohoutová, Zuzana January 2013 (has links)
The subject of this diploma thesis is the architectural design of Skyscraper "EVO" (experimental high-rise building) located in Brno. The building integrates various functions (residential, restaurant, shops, office space and gallery) at relatively small built-up area. The aim of the thesis is to create the design of a high-rise building with appropriate scale and which creates space for interconnection of different functions and will become new dominant of the city. The proposed building is located in the part of the city called Veveří. The building site is defined by Šumavská and Veveří streets. The building is designed as a single rectangular prism shaped volume. The entrances to the building are at the level of surrounding terrain. The building has 31 aboveground floors and 9 underground floors. The simple shape of building is structured by horizontal bands of consoles which create shields against excessive sun exposure and vertical atriums embedded in the main volume. These atriums connect interior and exterior. This atrium create connection between interior and exterior and ease the penetration of natural daylight inside the building. The dominant material used is glass, which is applied both in exterior and interior. The glass used on glazing of atrium sis colored transparent photovoltaic glass. Bands are in white color.
35

Výšková budova AZ Tower - stavebně technologický projekt / High rise building AZ Tower - construction technological project

Hrubá, Denisa January 2014 (has links)
This master´s thesis is dealing with selected part of the construction technology project of the high-rise building AZ Tower. The main content becomes the realization of supporting gross upper structure. It compiles in detail the most optimal proposal of technological processes, working machines, schedule, control and test plan, occupational safety, environment protection, construction site equipment and last but not least, the coordination of four tower cranes. Apart from the architectural and technically impressive draft of the Czech Republic tallest building it will be interesting to deal with progress of the whole construction. New technologies and elementary construction activities adapting to work at extreme altitudes will be used.
36

Spatial Pendulum Tuned Mass Damper with Two Tuning Frequencies

Mohammed, Waled T. A. 20 December 2022 (has links)
No description available.
37

Obchodní dům "Centrum" v Brně / "Centrum" Department Store in Brno

Dvořáková, Zuzana January 2014 (has links)
The subject of the thesis is an architectural study of the reconstruction and extension of the "Centrum" department store in Brno. It is a dominant building designed by the famous czech architect Vladimir Karfík, which is located at the Urban Conservation Area Brno. Object wasn´t realized with the full extent of the original proposal, so in the project is planned a completion of it. The new solution respects the historical quality of Urban Conservation Area Brno with a concurrent view of the location on the lucrative land in the city center. The architectural concept is based on a return to the original idea of the architect and the addition of my own creative contribution within the extension of the new floors. Draft of the extension is intended so that the individual parts of an object communicate with each other, but they are easily recognizable as well. This idea was filled by both parts linked together visually by horizontal lines and ripple, which is used on balconies of the extension and behind the facade of the current building by shielding walls. However it is emphasized the contrast between an enclosed mass and a free-flowing space. The existing part of the building is used especialy as a leasable area of trade and services. On the upper floors there are areas of administration. Furthermore, there will be a restaurant and cafe with exhibition galleries and apartments are designed on the new added floors. The building is adapted to use by person with limited mobility. Newly added uses in the object will increase the attractiveness of the building and its surroundings.

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