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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.
381

Hledání tvaru skořepinových konstrukcí / Form finding of shell structures

Musil, Jiří January 2017 (has links)
The theme of this doctoral thesis is the design of concrete shell structures with the focus on finding their optimal shape. The optimal shape of a concrete shell is the shape in which for a given load (usually the dead weight of the structure) no significant bending moments are generated in the shell and the structure is in the so-called membrane state. The inspiration for this thesis is the work of Swiss engineer Heinz Isler, who developed the shapes of shell structures using model tests of appropriately loaded flexible membranes. He developed the shell structure for large spans by inverting the resultant shape, which carried its weight almost entirely via membrane forces. The numerical solution of the above experiments using Midas Civil is presented herein. The basic principles of the method are demonstrated on the example of sagged cable. The numerically found shapes are compared with the analytical solution. A shell is designed based on the numerically found shapes and its stress response to dead load is described, particularly in relation to the membrane action. In the next part, the acquired knowledge and methods were used to design three relatively complicated shell structures. Each structure was statically analysed and its static behaviour was described. Structures with perfectly rigid or flexible supports, which simulate real behaviour of the supports, were studied. In the final phase, the results of static analysis of the selected shell were experimentally verified on a physical model in a scale of 1: 55.56. The model has been built using 3D printing. The thesis describes the use of a modelling similarity, the model design, the production process, and the experiment. The load test confirmed the optimal design of the shell structure and the validity of the numerical method for finding their shapes.
382

Zesilování železobetonových sloupů ovinutím FRP tkaninou / Strengthening reinforced concrete column confined by FRP fabric

Kostiha, Vojtěch January 2018 (has links)
The doctoral thesis deals with the strengthening of reinforced concrete columns by FRP fabric wrapping. Its aim is to describe the principles of confinement based on the analytical study, numerical simulations and the results of the experimental program. The description of the confinement philosophy is made with respect to the type of FRP material used. It was therefore possible to present a design process of confinement, which accurately predicts the behaviour of the confined columns. At the same time, some effects limiting the effect of confinement (e.g. the method of wrapping, the number of FRP fabric layers, the slenderness of the element, etc.) are included in the design. The dissertation also presents basic information about FRP material and its properties and gives an overview of design approaches of the FRP confined columns. The dissertation also pointing out the shortcomings of the design code ČSN EN 1992-1-1. The stated example highlights the significant variation in properties of confined concrete determined by selected approaches. This variation of properties complicates the design of this strengthening method. The experimental program was used to verify the basic principles of confinement and, through high columns, allowed a description of the behaviour in almost the whole range of interaction diagram. The conclusions of the work provide information on possible future research direction.
383

Pohybové programy pro ovlivnění tělesného složení a tělesné zdatnosti seniorů / Motion programmes to influence body composition and physical fitness of seniors

Hráský, Pavel January 2014 (has links)
In this work we focused on the application of physical activity, which aimed to reduce the negative impact of physical deprivation and associated functional and structural changes in the musculoskeletal system. The principal criterion was the diagnosis of the organ systems of the locomotor system, focusing on the muscular system. The subsequent application of appropriate forms of exercise intervention was designed to mitigate the effects of the aging process and functional changes in the body of the senior individual. Finally, we wanted to assess the impact of changes in body composition in its own self- sufficiency and independence of older people and the quality of life of older people in terms of physical and psychosocial aspects. The most significant is the loss of muscle mass, sarcopenia development, increase fat mass with frequent reductions in body weight. The focus of our work and its specific purpose is to clarify the influence of the applied physical interventions. To assess changes in body composition are needed for our work used the method of multi Bioanalysis. Results in body composition in older adults have been evaluated and intra-individual measured data were compared with the general senior population. Kinesiology testing shortened muscle groups was carried out repeatedly to reduce...
384

Business centrum / Business Centre

Dušek, Ivo January 2018 (has links)
This Master thesis was about calculation and design of supporting steel bar structure multi storey administrative building. Steel structure with rotation symmetric floor plan has sixteen storey. Maximal size of building is 100x100m. Structural design report is made by a combination of manual calculations and calculations using software RFEM by Dlubal. Structural design report includes calculations of secondary beam, primary beam, column, bracing, purin, truss girder and others part of structure with their connections. Thesis includes drawing documentation and report.
385

Přepočet a variantní návrh nosných konstrukcí objektů administrativního centra / Static verification and variant design of load-carrying structures of administrative center

Fabiánová, Lucie January 2014 (has links)
The aim of this thesis was to develop assessments of existing supporting structure of a rectangular object and design of new options for rectangular and cylindrical object administrative center in the Jihomoravská plynárenská, a.s. in Brno. According to the task have been recalculated construction and design of new structures in accordance with applicable standards. New design of both buildings (rectangular and cylindrical) came from several studies.
386

Nosná železobetonová konstrukce objektu administrativní budovy / Load bearing RC structure of office building

Ferencz, Balázs January 2014 (has links)
The Master’s thesis is focused on the analysis and design of selected members of load-bearing structure of an administration building according to the ultimate limit states (ULS) and seviceability limit states (SLS). The calculation and the analysis was supported by design software SCIA ENGINEER 2012. Structural analysis deals with the design of the reinforced concrete (RC) flat slab above the 4rd strorey which is particularly supported by RC columns and particularly lies on RC walls. Furthermore, the Master’s thesis contains analysis of some selected columns of last three storeys, column of lowest storey, construction of stairway between 4rd and 5th storeys. The work beside this deals with the calculation and design of foundation of the object. The rest parts of the load-bearing structure are not solved in the Master’s thesis.
387

Nosná železobetonová konstrukce rodinného domu / Load-bearing reinforced concrete structure of a family house

Borovec, Michael January 2022 (has links)
The final thesis is focused on designing reinforced concrete load-bearing structures of a detached house on two floors and one basement. In the basement will be located the storages, utility room and wine bar. On the ground floor will be located garage for two cars, living room with kitchen and study. On the second floor will be located bedroon and two child’s rooms. The ceiling slab of the second floor, the ceiling slab of the ground floor, the ceiling slab of the basement, spiral staircase, half-turn staircase and walls of the first underground floor with solution as water-resistant construction. Programs SCIA Engineer 21.1 and Dlubal RFEM are used to calculate the internal forces. To varify the accuracy of the results is used manual calculation. The work includes drawings of formwork and reinforcement of the all designing structires. The bulding is designed according to ČSN EN 1992-1-1.
388

Projekt nosné železobetonové konstrukce / Design of Load Bearing Concrete Structure

Klodner, Jan January 2012 (has links)
This thesis is focusing on general issues of floor concrete slabs, technology, implementation, subsoil models, calculation of internal forces and design approaches. Based on these data the thesis monitors the behaviour of floor slabs according to the various parameters. It also includes three versions of design of the real floor slab, made of steel fibre reinforced concrete, reinforced concrete and prestressed concrete. Economic comparison is also included. In addition it developes a design of the chalice base and reinforced concrete column of the supporting hall system, instead of the original usual base with steel column.
389

Rizika související s novelou insolvenčního zákona a jejich řešení / Risks Related to the Amendment to the Insolvency Law and Their Solution

Pajdlhauserová, Eliška January 2018 (has links)
Risk assessment, analysis, insolvency law, insolvency codex, methods, novelisation.
390

Vliv psychosomatické situace matek v těhotenství na prenatální vývoj dítěte / Influence of the psychosomatic situation of mothers in pregnancy on the prenatal development of the child and condition of newborn after delivery

ŠIMEČKOVÁ, Alžběta January 2019 (has links)
Pregnancy is a period full of changes. The perception of life values by the woman and her partner are varied, changes in the life style are encountered and their roles in the life are also altered. The pregnant woman feels that nothing will be like before. She is very sensitive and also easily vulnerable. Contrastingly to the routine prenatal care, prenatal psychology searches for answering questions what the feelings in the pregnancy are in terms of the psychosocial situation, and what the impacts of this course on the newborn condition after the delivery are. The scope of the work is aimed at the importance and forms of the prenatal attachment, course and its impact on the newborn. The targets of the Diploma Work entitled "Effects of the psychosomatic situation of pregnant women on the child prenatal development" are as follows: 1) to assess the pregnant woman psychosomatic situation, 2) to evaluate the influence of psychosomatic situation on prenatal development of child 3) to determine the measure of the pregnant woman (dis)comfort throughout three trimesters and 4) to evaluate the newborn condition after the delivery. Thirty pregnant women were addressed. Fifteen women reflected on the proposal and agreed with completing an anonymous standardized scale. The respondents were contacted within a period of February 2017 to February 2018. The research sample group included the women and their newborns. The choice was intentional. The women completed the Freybergh scale, which is focused on monitoring the psychosocial situation of pregnant women. It comprised 70 questions divided into seven categories. They were answered through the mediation of a compiled web reference at http://mail.scac.cz/mrIWeb/mrIWeb.dll?I.Project=V31_TEHOTENSTVI_PORIZOVANI. The statistically processed results indicated the measure of the deprivationof pregnant women in particular trimesters and condition of the newborn after the delivery based on the pregnancy experienced. The Atlas programme was employed for the qualitative research to develop an anchored statement. From the sample group of 15 women and their 405 answers, 2% of answers were recorded corresponding to an intermediate degree of deprivation. Every respondent suffered frommild deprivation. The results of the present study will find their applications particularly to branches of prenatal psychology and gynaecology. They will serve as pilot results for a CEP project planned.

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