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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.
1

Centrum technických služeb / Centre of Tecnical Services

Babinec, Ondřej January 2014 (has links)
This dissertation deals with the design of the object designated as a technical service center in the town Ivančice. According to the requirements of the client the object contains the following sections: facilities for 25 people, electricians room with the storeroom, premises for the manager, the accountant and the field worker, necessary sanitary facilities, material storeroom, workshop and garages. The building is wheelchair accessible. The main vertical load-bearing constructions are built from brick blocks, the ceiling construction is monolithic reinforced concrete, the load-bearing construction of the roof is made up of wooden rafters. Workshop, garages and warehouses are located in the adjoining steel assembled hall which is sheathed in polyurethane panels.
2

Truhlárna Slaný / Carpenter of Slaný

Cach, Ladislav January 2017 (has links)
The thesis theme is a carpentry production facility with the adjacent office building at Slané. The thesis deals about the proposal of the object with building and construction solutions of the building. The thesis includes a detialed solution of the exhaustion ventilation the technology part of the carpentry. In the office building there is a reception in the 1st floor and the exhibition spaces. The vertical communication in the building is solved by two-arm straight starcases, one in office building and the second in the annexe hall for the employes. The construction system of the hall is reinforced concrete prefabricated system with advanced prestressed girders. Office building is designed like a reinforced concrete monolithic frame. Buildings are divided by dilatation. The object is based on the footings which are connected to base thresholds. The rooftops of the objects are flat.
3

Prefabricerade kontra platsgjutna betongstomväggar: : En utredning ur miljö- och ekonomiskt perspektiv / Prefabricated versus cast-in-situ concrete structures walls : An investigation from an environmental and economic perspective

Fatah Laso, Salar, Omer, Haure January 2023 (has links)
År efter år byggs det allt fler byggnader och med tanke på efterfrågan och behoven kommer det att fortsätta göra det framöver. Kommande åtta åren kommer Sverige att behöva bygga ca 600 000 nya bostäder för att möta hushållstillväxten. Trots medvetenheten om byggbranschens utsläpp och miljöpåverkan samt dess kostnader vid framtagning/tillverkning av nya byggnadsmaterial och fortsatt byggande, fortsätter det byggas på grund av bostadsbristen. Parallellt med byggandet pågår en världsomfattande klimatförändring, vilket lett till varmare temperaturer som orsakat naturkatastrofer etc. Sveriges bygg- och fastighetssektorn stod 2019 för hela 21,1% av Sveriges totala koldioxidutsläpp (CO2) som motsvarar 19,3 miljoner ton koldioxidekvivalenter, vilket motsvarar en femtedel av Sveriges totala utsläpp. Ett av de vanligaste byggnadsmaterialen att bygga stommen för ett flerbostadshus med är betong, där den domineras av två stommetoder, prefabricerad- och platsgjutenbetongstomme. 2020 tillverkades 80 procent av Sveriges flerbostadshus med en stomme av betong.Syftet med denna fallstudie är att jämföra skillnaden mellan betongstommetoderna platsgjuten betongstomvägg mot Prefab stomvägg med avseende på koldioxidutsläppen och ur kostnadsaspekten under byggskede A1-A5, detta för att underlätta valet för entreprenören att välja en lönsam stommetod som släpper ut mindre koldioxidekvivalenter.Denna studie har använt olika undersökningsstrategier för att stärka underlaget för empirin, det vill säga litteraturstudier och fallstudier, dokumentanalys, Livscykelanalys och kalkylering. För att besvara frågeställningarna och uppnå målet med fallstudien har sex olika projekt erhållna från Peab Bostad Syd undersökts med avseende på tillverkningsmetoderna massiva Prefab-, Semi-Prefab- och platsgjutna metoden. Livscykelanalys har undersökts med Byggsektorns Miljöberäkningsverktyg och där kostnadskalkylerna undersöktes med Excel med hjälp av MAP kalkyleringsunderlaget.Resultatet indikerar att den platsgjutna stomväggen ger upphov till utsläpp som är 53,5% respektive 75,3% mindre CO2e/m2 Bruttoarea än skalväggarna respektive massiva Prefabväggen. Resultatet indikerar också att den platsgjutna metoden släpper ut 60,4% CO2e/m3 betong mindre än skalväggarna och 84% CO2e/m3 betong mindre än den massiva Prefabmetoden. Den platsgjutna väggen blir 5,6% billigare än skalväggarna och 21,4% billigare än den massiva prefabricerade väggen per m2 bruttoarea. Den platsgjutna väggen blir 10,4% billigare än skalväggarna och 33,6% billigare per m3 betong för den massiva prefabricerade väggen.Slutsatserna ur studien är att den platsgjutna metoden medför mindre CO2 utsläpp och är ett billigare alternativ jämfört med de prefabricerade metoderna. Denna fallstudie iakttar produkt skedet (A1-A3) och byggproduktionsskedet (A4 och A5) för stomväggar av betong enbart. Denna fallstudie har undersökts med avseende på sex byggnader som har en geografiskplacering i södra Sverige, vilket inte tar hänsyn till norra Sverige som har en kallare temperatur. / Sweden's construction and property sector accounted for 21,1% of Sweden's total carbon dioxide emissions (CO2) in 2019, which corresponds to 19,3 million tons of CO2e. One of the most common building materials to build the structure of an apartment building with is concrete, which is dominated by two structural methods, prefabricated and cast-in-place concrete structures. In 2020, 80% of Sweden's apartment buildings were manufactured with concrete structures. The purpose of this study is to compare the difference between the concrete structure methods, cast-in-place concrete structure walls versus Prefab structure walls about CO2 emissions and from the economic aspect during the construction phase, the production phase, and the construction production phase A1-A5, to facilitate the choice for the contractor to choose a profitable structure method that emits less CO2e.The result indicates that the cast-in-place structure wall emits 53,5% and 75,3% less CO2e/m2 gross area than the semi-prefab and solid Prefab wall. The result indicates that the cast-in-place method emits 60,4% CO2e/m3 less concrete than semi-precast and 84% CO2e/m3 less concrete than the massive Prefab method. The cast-in-place wall will be 5,6% cheaper than the semi-prefabricated- and 21,4% cheaper than the massive prefabricated wall m2 gross area. The cast-in-place wall will be 10,4% cheaper than the semi-prefabricated- and 33,6% cheaper SEK/m3 concrete for the massive Prefab walls. The conclusions from the study are that the cast-in-place method entails fewer CO2 emissions and is a cheaper alternative compared to the prefabricated methods. This study observes the LCA stages A1-A5 for concrete structure walls only. This study has investigated about six buildings that have a geographical location in southern Sweden, which does not take into account northern Sweden, which has a colder temperature.
4

Исследование узлов соединения сборных конструкций на основе китайского и российского отраслевого опыта : магистерская диссертация / Analysis of prefabricated construction joints based on Chinese and Russian industry experience

Сяо, Ш., Xiao, S. January 2023 (has links)
В настоящее время технология сборного строительства быстро развивается в странах мира. Технология монтажа зданий из сборного железобетона являются стандартом индустриализации строительства. С 2015 года Китай энергично занимается развитием сборного строительства, и с этого года доля сборных зданий в новом строительстве значительно увеличилась. Являясь важной частью сборного строительства, узловые соединения играют роль в соединении сборных элементов и влияют на целостность здания и механические свойства области, где расположены элементы. Например, в узловых соединениях сборных конструкций прочность и надежность соединения колонн оказывает непосредственное влияние на способность передачи усилий и координационные характеристики элементов. Для изучения характеристик и силовых возможностей различных типов узловых соединений, и таким образом, для проектирования узловых соединений в проектах сборных конструкций, в данной работе рассматриваются решения и практика узловых соединений и методы сборки, используемые в сборных конструкциях, анализируются преимущества и недостатки различных методов и показатели механических свойств на основе аналитического исследования узловых соединений сборных конструкций, используемых в настоящее время в Китае и России. Ориентируясь на соединительные узлы с цементными втулками в качестве примера, 3 образца из их испытаний были смоделированы с помощью программы конечно-элементного анализа ABAQUS, ссылаясь на испытания исследователя Чжао и др. Результаты показывают, что построенные результаты конечно-элементного моделирования являются более последовательными и могут более точно имитировать фактические характеристики. На основе более точного конечно-элементного моделирования были разработаны 4 модели образцов сборных железобетонных колонн с использованием узлов с цементными втулками с различными уровнями внутренних дефектов, и их механические свойства, эффекты упругого гистерезиса, способность рассеивать энергию и законы деградации жесткости были исследованы с помощью конечно-элементного анализа для обобщения влияния различных уровней внутренних дефектов на механические и структурные свойства таких узлов. / Nowadays, prefabricated construction technology is developing rapidly in countries around the world. The technology for installing precast concrete buildings is the standard for the industrialization of construction. Since 2015, China has been vigorously developing prefabricated construction, and since this year, the proportion of prefabricated buildings in new construction has increased significantly. As an important part of prefabricated construction, nodal joints play a role in connecting prefabricated elements and affect the building integrity and mechanical properties of the area where the elements are located. For example, in the nodal connections of prefabricated structures, the strength and reliability of the column connection has a direct impact on the force transfer capability and coordination characteristics of the elements. In order to study the characteristics and force capabilities of different types of nodal joints, and thus to design nodal joints in prefabricated structure projects, this paper reviews the solutions and practices of nodal joints and assembly methods used in prefabricated structures, analyzes the advantages and disadvantages of different methods and mechanical property indicators based on an analytical study of prefabricated structure nodal joints currently used in China and Russia. Focusing on the connection assemblies with cement sleeves as an example, 3 specimens from their tests were modeled using the finite element analysis program ABAQUS, referring to the tests of Zhao et al. The results show that the constructed finite element modeling results are more consistent and can more accurately simulate the actual performance. Based on the more accurate finite element modeling, 4 specimen models of precast reinforced concrete columns using cement sleeve assemblies with different levels of internal defects were developed, and their mechanical properties, elastic hysteresis effects, energy dissipation ability and stiffness degradation laws were investigated using finite element analysis to generalize the effects of different levels of internal defects on the mechanical and structural properties of such assemblies.
5

En jämförelse mellan prefabricerad och platsgjuten stomme: : Ur ett ekonomiskt och miljömässigt perspektiv / A comparison between prefab and cast-in-situ structures: : From an economical and environmental perspective

Svensson, Josefin, Nilsson, Rasmus January 2019 (has links)
Syfte: Syftet med denna studie är att undersöka skillnader mellan prefabricerad och platsgjuten stomme ur ett miljömässigt samt ett ekonomiskt perspektiv. Detta för att underlätta för olika byggföretag att välja en stomlösning till framtida byggprojekt. Metod: För att uppnå målet och svara på de frågeställningar som innefattas i studien har en fallstudie gjorts bestående av sex projekt. Metoderna för insamlingen av den empiri som krävts för att fullfölja studien är litteraturstudie, dokumentanalys, kalkylering och LCA. Kalkyleringen och livscykelanalyserna i fallstudien har gjorts med hjälp av de digitala verktyg Bidcon och Anavitor. Resultat: Studien visar att den prefabricerade stommen kostar 57–60,7% SEK/m2 BTA och 40,7 – 44,1% SEK/m3 betong mer än den platsgjutna stommen. Studien visar också att den prefabricerade stommen släpper ut 30–35% CO2e/m2 BTA och 17–22% CO2e/m3 betong mer än platsgjuten stomme. Konsekvenser: Denna rapport underlättar att välja den stomtyp som är mest ekonomisk och påverkar miljön minst. Vidare kan både en stommes kostnad och dess miljöpåverkan minskas genom att välja en platsgjuten stomme över en prefabricerad. Begränsningar: Studien är avgränsad till en fallstudie baserad sex projekt där tre är prefabricerade och tre är platsgjutna. Den geografiska platsen är begränsad till södra Sverige samt att endast tre avstånd för respektive stomme har undersökts. Skedet för undersökningen är avgränsat till tillverknings och produktionsledet. Endast den bärande betongstommen bestående av väggar, bjälklag och pelare har undersökts. Grundarbetet förbises i denna studie. Armering och betong är avgränsat till generella kvaliteter och mängder för de olika stommarna. / Purpose: The purpose of this study is to investigate differences between prefabricated and cast-in-situ structures from an environmental and an economic perspective. This to facilitate for different construction companies to choose a structure solution for future construction projects. Method: To achieve the goal and answer the questions that are included in this study, a case study has been conducted consisting of six projects. The methods for collecting the empirical data required to complete the study are literature study, document analysis, calculation and LCA. The calculation and life cycle analyses in the case study are done using the digital tools Bidcon and Anavitor. Findings: The study shows that the prefabricated structure costs 57–60,7% SEK / m2 BTA and 40,7 – 44,1% SEK / m3 concrete more than the cast-in-situ structure. The study also shows that the prefabricated structure releases 30-35% CO2e / m2 BTA and 17-22% CO2e / m3 concrete more than cast-in-situ structure. Implications: The conclusion in this report is to make it easier to choose the type of structure that is the most economical and has the least impact on the environment. Furthermore, the structures cost and environmental impact can be reduced by choosing a cast-in-situ over a prefabricated structure. Limitations: The study is limited to a case study based on six projects where three are prefab and three are cast-in-situ. The stage of the investigation is limited to the manufacturing and production stages. Only the load-bearing concrete structure consisting of walls, beams and pillars is examined. The foundation is overlooked in this study. Rebars and concrete are limited to general qualities and quantities for the different structures.
6

Diagnostika a hodnocení prefabrikované železobetonové konstrukce / Diagnostics and assessment of prefabricated reinforced concrete structures

Kocuba, Robert January 2018 (has links)
This thesis deals with inspection and constructionally technical research of reinforced concrete prefabricated construction from the second half of 20th century. In theoretical part, the research of literature, documents and valid standards is performed, with a focus on production and construction of prefabricated elements and also on the metodology of research. In practical part, the detection of reinforcement of individual elements of the construction and concrete properties is performed. The result of this work is the assessment of the state of the construction, static calculation of the ceiling panel and idea proposal for eventual reconstruction.
7

Autodílny s autoškolou / Car repair shop and driving school

Podola, Lukáš January 2015 (has links)
The goal of this diploma thesis is to partly elaborate the project documentation of a car repair shop. The building is situated in Hranice (Přerov district) next to the industrial estates near a town part called Nová. It is a three storey building with two aboveground floors and a basement. The building is divided into two parts. The industrial part is designed as prefabricated structure and the non-industrial part is designed to be bricked in Wienerberger Porotherm system. The building is intended for maintenance and repair of racing cars. There are also the office spaces for the company's management and a room for a driving school in the building.
8

Skladová hala v Šakvicích - stavebně technologický projekt / Warehouse in Šakvice - construction technological project

Knotek, Vít January 2016 (has links)
Main goal of this thesis is effective design and comprehensible description of the assembly of reinforced concrete skeleton warehouse in Šakvice. In several chapters of this thesis is for preparing of this investor´s plan solved supplies prefabricated components. As well as their assembly into construction, equipment of construction site, used technologies, quality control and safety of performed works. There is great emphasis on the construction budget and its chronology. The aim was to use the rapid progress of construction of the supporting skeleton, taking into account the financial coast of the proposed technology.
9

Stavebně technologický projekt domu s pečovatelskou službou Ždírec nad Doubravou / Construction technology project of a nursing home Ždírec nad Doubravou

Soukupová, Daniela Unknown Date (has links)
The diploma thesis deals with the construction of a new nursing home in Ždírec nad Doubravou. It is a four-storey prefabricated structure, where on the first floor there are three surgeries for doctors and on the remaining three floors there are apartments for clients of the building. In hhe work is a implementation study of the main technological stages, assessment of the transport solution, time and financial plan together with the calculation of the main building according to THU. The equipment of the construction site with drawings and design of the main machines and mechanisms is also solved. For selected technological processes, an itemized budget with statement of quantities, time schedule and technological precription for the assembly of prefabricated ceiling elements together with a control and test plan. In the last points, the technological precription for the floors of the clean zone of medical surgeries is solved with a proposal of measures according to the LEED 2009 certification and a noise study.

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