For decades, structural engineers have been using various conventional design approaches for assessing the strength and stability of framed structures for various loads. Today, engineers are still designing without some critical information to insure that their stability assessment yields a safe design for the life of the structure with consideration for extreme loads. Presented in this thesis is new critical information provided from the study of stability analysis and design of steel framed structures accounting for extreme loads associated to load patterns that may be experienced during their lifetime. It is conducted in five main parts. A literature survey is first carried out reviewing the previous research of analyzing frame stability including the consideration of initial geometric imperfections, and also evaluating research of the analysis and design of the increased usage of cold-formed steel (CFS) storage racks. Secondly, the elastic buckling loads for single-storey unbraced steel frames subjected to variable loading is extended to multi-storey unbraced steel frames. The formulations and procedures are developed for the multi-storey unbraced steel frames subjected to variable loading using the storey-based buckling method. Numerical examples are presented as comparisons to the conventional proportional loading approach and to demonstrate the effect of connection rigidity on the maximum and minimum frame-buckling loads. Thirdly, the lateral stiffness of axially loaded columns in unbraced frames accounting for initial geometric imperfections is derived based on the storey-based buckling. A practical method of evaluating column effective length factor with explicit accounting for the initial geometric imperfections is developed and examined using numerical examples. The fourth part is an investigation of the stability for multi-storey unbraced steel frames under variable loading with accounting for initial geometric imperfections. Finally, the stability of CFS storage racks is studied. The effective length factor of CFS storage racks with accounting for the semi-rigid nature of the beam-to-column connections of such structures are evaluated based on experimental data. A parametric study on maximum and minimum frame-buckling loads with or without accounting for initial geometric imperfections is conducted. The proposed stability analysis of multi-storey unbraced frames subjected to variable loading takes into consideration the volatility of live loads during the life span of structures and frame buckling characteristics of the frames under any possible load pattern. From the proposed method, the maximum and minimum frame-buckling loads together with their associated load patterns provides critical information to clearly define the stability capacities of frames under extreme loads. This critical information in concern for the stability of structures is generally not available through a conventional proportional loading analysis. This study of work ends with an appropriate set of conclusions.

published_or_final_version / Housing Management / Master / Master of Housing Management

This doctoral thesis addresses questions of how wind loads acting on multistoreytimber buildings can be dealt with by structural design of such buildings.The conventional use of sheathing either nailed or screwed to a timberframework is considered, together with other stabilizing structures such ascross-laminated timber panels.The finite element method was employed in simulating the structuralbehaviour of stabilizing wall units. A series of studies was carried out of walls inwhich the sheathing was nailed to a timber frame. Different structural levelswere studied starting with modelling the performance of single sheathing-toframingconnections, to the use of models for studying the overall structuralbehaviour of walls. The results of calculations using models for simulation ofwalls subjected to different loading agree reasonably well with experimentalresults. The structural properties of the connections between the sheathing andthe frame, as well as of the connections between the members of the frame,were shown to have a substantial effect on the simulated behaviour of shearwall units. Both these types of connections were studied and described inappended papers.Regarding cross-laminated timber wall panels, it was concluded that walls witha high level of both stiffness and strength can be produced by the use of suchpanels, and also that the connections between the solid wall panels can bedesigned in such a way that the shear forces involved are transmitted from onepanel to the next in an efficient manner.Other topics in the thesis include the properties of connections between shearwalls and the rest of the building. Typically high tension forces occur at specificpoints in a timber structure. These forces need to be transmitted downwards inthe structure, ultimately connecting them to the substrate. A lap-joint that maybe used for this purpose has been studied using generalized Volkersen theory.Finally the maximum capacity of a conventional rail to substrate connection hasbeen examined using linear and nonlinear fracture mechanics.

Les pays industrialisés cherchent aujourd’hui à réduire leur consommation d'énergie et à utiliser des matières premières de substitution, notamment renouvelables dont le bois fait partie. Pour promouvoir son usage, le développement de méthodes favorisant son recours dans les systèmes constructifs pour la construction multiétage est nécessaire.La conception d’un bâtiment est multicritère. Des objectifs contradictoires sont à optimiser simultanément. Des solutions de compromis Pareto-optimaux sont par exemple recherchées entre l’atteinte des meilleures performances d’usage et la limitation de l’impact environnemental du bâtiment. Ces travaux portent ainsi sur le développement d’une méthode d’optimisation multiobjectif de systèmes constructifs bois adaptés au multiétage.Des objectifs de maximisation du confort vibratoire des planchers et de minimisation des besoins de chauffage, d’inconfort thermique, de potentiel de réchauffement climatique et d’énergie grise sont pris en compte. La méthode repose sur un algorithme d’optimisation multiobjectif par essaim particulaire capable de proposer un ensemble de solutions non-dominées constituant le front de Pareto. L’espace des solutions est contraint par des exigences réglementaires nécessaires à la sécurité de l’ouvrage. L’ensemble des fonctions-objectif est modélisé sous forme de fonctions analytiques. Les sorties d’intérêt du modèle de simulation thermique dynamique sont substituées par des métamodèles.La méthode développée est mise en oeuvre sur un cas d’étude. Les résultats obtenus offrent une grande diversité dans un panel de 20 000 solutions optimales. Ces résultats constituent un support de discussion entre les différents acteurs d’un projet de construction. / Industrialised countries are seeking to reduce their energy consumption and to use alternative raw materials, including renewables such as wood. To promote its use, multi-storey timber constructive systems need the development of new design methods.Building required a multicriteria design where conflicting objectives must be optimised simultaneously. Research solutions have to achieve the best Pareto-compromise between use performance and environmental impact of the building. This work aims to develop a multiobjective optimisation method of timber multi-storey building.The objectives of maximising floor vibration comfort and minimising heating needs, thermal discomfort, global warming potential and embodied energy are taken into account. A multi-objective particle swarm optimization algorithm is used to obtain a set of non-dominated solutions which is the Pareto front. The solution space is constrained by regulatory requirements necessary for the safety of the structure. All objective-functions are modelled as analytic functions. Dynamic thermal simulation model outputs are replaced by metamodels.The developed method is implemented on a case study. The results offer a great diversity in a panel of 20 000 optimal solutions. These results provide a basis for discussion between the different actors of a construction project.

The main target is to design and asses the steel structure of a administartive multi-storey building. The steel structure is T shaped, with 30m span and 42m length. An analysis of two solutions of the supporting structure was performed. The first variant is consists of rigid bracing system. Trusses bracing in the second variant is an alternative solution. Both variants were compared and the amount of steel was found. The selected option was developed in greater details with static calculation, drawings and material report of steel.

This final thesis deals with a project documentation of a new multifunctional building. The building is located in Žďár nad Sázavou, in the Neumannova street. The building is divided into residential units and areas for a small company and a shop. The house is projected as a detached building with a partial basement and three floors. The residential part has 8 apartments in total – four apartments with three bedrooms, one with two bedrooms and three with one bedroom. It includes also cellars belonging to the apartments. The non-residential part includes space for a shop and an administrative part consisting of a reception, a meeting room, offices, stores and sanitary facilities. The main entrance in to the residential part is located on the level of staircase half landing. Main entrances into the non-residential parts are on the level of the ground floor. The house dispose with 24 parking places, two of them are dedicated for drivers with disabled parking permit. The building is based on concrete strip foundations. The external load-bearing structures are walled with clay masonry in the floors and with permanent formwork in the basement. The ceiling structure is formed with prestressed floor slabs. The house is covered with a warm flat roof. The staircase is pre-fabricated. In the thesis, there was put a stress on the appropriate dispositional, structural, technical and architectural design and on the safety in the use of the building. The drawing documentation is processed in the AutoCAD.

Diploma thesis is processed in the form design documentation for constrution. New bulding of the kindergarten is situated in a cadastre unit of Blansko town. Building is located on a flat terrain.„T“ shaped building is designes as a double-storey in one part, second part of the building is single-story. A construction systém is bricked from ceramic block and it has no basement. The building is roofed by non-walkable flat roof. Part of the building is roofed by a ealkable flat terrace. A ceiling construction is made by hollow core slab. The kindergarten is consisted of three departmen, each for 20 children. There is a kizchen, offices, technical area and office for a logopedie in the building

THIS MASTER´S THESIS DEALS WITH SOLVING THE PROJECT DOCUMENTATION FOR IMPLEMENTING A CONSTRUCTION. THIS MEANS DESIGNING BUILDINGS FOR TEMPORARY ACCOMMODATIONS AND HOTELS. THE NEW BUILDING IS INCLUDED IN THE TĚCHOV LAND REGISTRY. THE LAYOUT SHAPE IS ATYPICAL. THE LEFT PART IS SINGLE-STOREY, COVERED WITH A VEGETATION ROOF AND A ROOF WITH TERRACE. THE RIGHT, THREE-STOREY PART IS COVERED WITH A WARM FLAT ROOF. THE OBJECT IS MADE OF BRICKS, WITHOUT CELLAR, MADE OF CERAMIC BLOCKS. THE FLOOR STRUCTURES IS MADE OF PRESTRESSED HOLLOW CORE SLAB. THE PROJECT ALSO SOLVES THE RESTAURANT EQUIPMENT AND THE PARKING AREA.

The diploma thesis deals with the design of the project documentation of the home for the elderly in the village of Šoporňa, in the territory of the Slovak Republic. The building is designed as a detached building with three above-ground floors, partly underground. The building consists of a public section on the ground floor, where are situated services for residents and the general public such as hairdressing and cosmetics, doctors and dentists, cafes, massages and shop. There are also offices for administation, the dining room for the employees and the guests. First floor and second floor is designed for seniors, there is also a common room on each floor. The cellar part is designed for the interest of the guests, partly serves as a technical room. The third part of cellar serves as space for the maintenance of the building, the general storage areas and storage areas for business activity. Building is covered with warn flat roof with emergency breakwaters. The structure is based on the foundation pads and the structural system of the building is RC frame. The ceramic cavity blocks with contact insulation and ventilated facade are used on the infill walls. In the southern part of the building there will be a relaxing park and a relaxing garden.

The aim of my diploma thesis is a plan of a multifunctional house. The proposed building is designed in low-energy norm. The shape arrangement is an irregular rectangle, covered by two flat roofs. One of the roofs serves as a terrace. It is a five-storey building. Half of the ground floor serves as offices and the other half as an utility space for the flats above. The other four floors are for housing. Aforementioned building is located in Třebíč, in the area Na kopcích, on Modřínová street, plot No.1039/7. Vertical and horizontal construction are designed from POROTHERM building system. The building is based on a concrete foundation slab.