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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.
41

Nosná konstrukce rodinného domu / Load-bearing structure of the family house

Kabrhelová, Eliška January 2017 (has links)
Master's thesis is focused on the design and assessment of load-bearing structure of the family house. Model reinforced concrete structure is created in RFEM. Elements of reinforced concrete are Assessed in accordance with EN 1992-1-1. Excepting static calculation is part of documentation the technical report and drawings shape and reinforcement.
42

Novostavba polyfunkčního domu / New-build multifunctional building

Kořenek, Tomáš January 2022 (has links)
The diploma thesis deals with the new construction of a multifunctional building in Uherský Brod. The building is located in row houses development as an end house, in the central part of city Uherský Brod. The building is designed as a three-storey with partial basement. In the basement floor a parking slot and a technical facilities will be situated. The multifunctional building will serve as a fitness equipment store and repair shop it and will contain office premises, an e-shop dispensing, sanitary facilities and other house facilities. The structural system of a bulding is designed as a transversal, a constructural system as wall system in combination with columns. The construction technology is masonry system in combination with monolithic columns and ceilings. The vertical load-bearing structures will be built of ground clay bricks. The horizontal load-bearing structures will be reinforced concrete cast-in-placed. The roofs will be built as warm flated, partly as walkable terraces. The staircase is designed as straight, half-turn stairs with a landing, cast-in-place. There is an elevator designed in the mirror staircase. The foundation structures are designed as flat, cast-in-place concrete strip footings. The purpose and functional use of the multifunctional building are designed with regard to people with reduced mobility or orientation. The building is designed as a building with almost zero energy consumption.
43

Endochronic Constitutive Model for Sands and Its Application to Geotechnical Problems

Raji, M January 2013 (has links) (PDF)
The introductions of large digital computers in the field of engineering have rendered possible the solution of a wide variety of problems without the need to violate the equilibrium and compatibility. The major requirement for such analysis is a good constitutive model that represents the stress strain behaviour of the materials in an accurate way. Nowadays for most of the geotechnical engineering applications the elastoplastic models like Mohr Coulomb model are widely used. All the existing constitutive models which represent the plastic behaviour of soil are developed from the fundamentals of classical theory of plasticity. The classical theory of plasticity is always associated with the concept of yield surface and potential surface to represent the plastic behaviour. The definition of yield surface depends on the location of the yield point. But in practical sense it is very difficult to find out the exact yield point for a material. The expression for yield and potential surfaces are simply mathematical expressions formulated for computational efficiency. Experimentally it is very difficult to find out the yield surface in the case of three dimensional stress spaces. The classical theory of plasticity is developed based on the mechanical process. It is believed that a theory which violates the thermodynamic principle is not able to represent the material behaviour accurately. the initial stage and combined to give the final state of stress. It was proved that the equation proposed by Wu and Wang (1983) can be used to represent the triaxial behaviour of sand very well. The dilation and densification behaviour can be predicted very well with the endochronic constitutive equations. The principal aim of this work is to implement the endochronic constitutive equation in the FLAC3D model library like any other constitutive model and validate it with the triaxial test data. After implementation and validation, the application of the particular constitutive model is extended to some practical geotechnical engineering problems like the stresses and displacements around an underground opening such as tunnels, surface settlement due to shallow tunneling, stress distribution below the footing, settlement analysis of footing on various foundation beds such as sand, clay and sand overlying clay bed, lateral displacement of the secant pile wall due to excavation and the force developed in the horizontal support etc. All the three problems validate the model with the analytical, experimental and field data respectively. The equation proposed by Wu and Wang (1983) is used for the present study. In order to validate the equation proposed by Wu and Wang (1983), MatLab programming is used. The hydrostatic, deviatoric and volumetric behaviour is obtained separately using the concerned equations. The equation is coded in the MatLab and analysis is done for a triaxial element test. Both drained and undrained analyses were done in order to study the behaviour. The pore pressure developed is captured separately with the equation proposed by Geoffrey et al (1975). The results obtained from the analysis of the MatLab were compared with that of the experimental results. The analysis shows that the equation captures the least plastic behaviour well for the triaxial element test. The dilation and densification behaviour obtained using the respective equation shows that it matches well with the experimental results. A parametric study is also conducted in MatLab to see how the parameters affect the stress strain and volumetric behaviour of the sand. The parametric study conducted with the MatLab shows that most of the parameters involved in the equation affect the plastic part of the stress strain curve rather than the initial elastic part. User defined constitutive model was written in visual C++ and compiled as DLL (Dynamic Link Library) files that will be loaded whenever it is needed in FLAC3D. In visual C++, header and source files were written by incorporating the constitutive equation proposed by Wu and Wang (1983), defining the variables and other functions etc, and a dynamic link library is created, which is then integrated into the 3D finite difference code FLAC3D using the CPPUDM module to simulate the stress strain behaviour of the materials. CPPUDM module is an additional option in FLAC3D to implement the user defined constitutive models. The visual C++ code was written in the form of incremental stress strain relationship. The model acts like any other constitutive model in the FLAC3D model library and can be loaded whenever it is required. For the validation of the model in FLAC3D, the data for the MatLab simulation were used. Both drained and undrained tests were simulated with the model. The results obtained from the analysis shows that by suitably selecting the parameters the model can simulate the stress strain behaviour of sand very well. The volumetric and deviatoric behaviour were observed and is matching well with the experimental data. In the case of the undrained test the pore pressure generation is well captured by the equation proposed by Geoffrey et al (1975). In urban areas the construction of shallow tunnels results in excessive settlements of the ground surface and thereby causes damage to the existing above ground structures. In order to minimize the settlements and to reduce the impact due to that, a prior analysis of the displacements and stresses around the opening is very important. Nowadays numerical analysis is widely used for the analysis of such structures. The most important requirement of such analysis is a constitutive model that can represent the unloading behaviour around the tunnel opening of sand very well. Here the endochronic constitutive model implemented in the FLAC3D model library is used to evaluate the stresses and displacements around the tunnel. In the analysis the tunnel is simulated as a cylindrical hole in an infinite medium with the in situ stress. The stresses at the springing line was observed and compared with the analytical solution. The results show that the results are matching well with the analytical results. The comparison of the results with that obtained using the Mohr Coulomb model is also done to see how the model differs from a widely used plastic model. By slightly adjusting the parameters the results obtained from both the models are in well agreement. The strain softening effect which is predominant around an underground opening due to the loosening of soil mass is well captured by the endochronic model compared to the Mohr Coulomb model. The settlement analysis shows that the model is almost in close agreement with the closed form solution proposed by Oteo & Sagaseta (1982) and the results obtained with the Mohr Coulomb model. The settlement trough formed for various shapes is wider and deeper than the Mohr Coulomb model. The vertical stress distribution around the opening of the tunnel is studied with varying the shape of the openings using the proposed constitutive model. The results obtained were compared with that of the Mohr Coulomb model. The slightly higher values in the case of endochronic model are basically due to its plastic nature. The displacement and stresses in the axial direction (along the excavation) is observed with the model. In the case of shallow tunnel the surface get influenced by the loosening of the soil mass which necessitates the use of the support system. The study shows that the model can be used for the simulation of underground opening like tunnel and will capture the behaviour well. Footings are structures used to support the buildings constructed above the ground. The settlement analysis of footings is very important when we consider the stability of the structures supported by it. The vertical stress distribution below the footing is studied using the endochronic constitutive model and compared with the analytical solution proposed by Boussinesq (1885). In the elastic range the model shows matching results with the Boussinesq’s solution. The settlement analysis of footing on various foundation beds such as sand, clay and sand overlying the clay bed were studied using the endochronic constitutive model implemented in the FLAC3D model library. The experimental data conducted in our lab (Sireesh (2006)) was used for the study. The results show that with the chosen parameters the results obtained with the endochronic model are in good agreement with the experimental data. The Mohr Coulomb model over predicts the results. This shows higher modulus value for the Mohr Coulomb model. By conducting the parametric study it was seen that by reducing the value of modulus for the Mohr Coulomb model, the results are in good agreement with the experimental value. The displacement and stress contours obtained for the two models were compared. By analyzing the displacement contours it is seen that the Mohr Coulomb model shows uniform settlement. In the case of endochronic model uniform settlement is observed for about 5% settlement that is in the elastic range. After a certain strain level the displacement contours are tilted more towards one side showing the rotational failure. Here the endochronic model captures the anisotropic behaviour associated with the materials like sand at higher strain level. This result is a concrete evidence that the model can capture the realistic behaviour very well compared to any other model. Even though the model developed is for sand its application can be extended to clay also. The size and shape of the footing is varied to study its effect on the pressure settlement curve. The analysis is done with square shape of 150mm side and circular shape of 150mm diameter. As there is not much variation in the area of influence, the shape has little influence on the pressure settlement curve. As the size of the footing increases the settlement increases for a given pressure. A parametric study is conducted by varying the modulus value used. The study shows that as the modulus value increases, the settlement reduces for a given bearing pressure. The endochronic model analysed with the lower modulus value shows that the model predicts the perfectly plastic behaviour, here the settlement increases for low value of bearing pressure. The application of endochronic model for the simulation of complex geotechnical engineering problems like footings is highly explored in the study. Nowadays most of the infrastructure facilities are concentrated towards the underground space. The excavation and construction of such structures in the urban areas results in damage to the existing above ground structures if the construction is done in close proximity to the structures. In the present study a staged excavation of an underground construction for the Bangalore metro project is simulated with the endochronic constitutive model. In the Bangalore metro project the excavation for the underground station is done at the cricket stadium site. At the site there are two major buildings such as the six storied Hindustan Aeronautical Limited building and 100 years old BSNL masonry building. To minimize the impact on these structures were a major concern during the construction of the work. A robust support system consists of secant pile walls, soldier piles and horizontal struts are installed at the site. The OSV method known as the Onsite Visualization and monitoring is conducted to minimize the damage to the existing structures and the accidents at the construction site. Sensors are connected to LEDs which show change in color when the displacements and forces cross the triggered value. The field instrumentation is done with inclinometers, tilt meters and strain gauges connected to the sensors to observe the lateral deformation of the secant pile wall, tilt of the HAL building and the forces developed in the horizontal struts. The monitoring of field data is done for a period of five months from July to November. From the analysis of the field observed data it is clear that the support system provided were strong enough to resist the forces due to unloading. The lateral deformation of the secant pile wall and the forces developed in the strut were numerically analysed using the endochronic constitutive model and the results were compared with the field monitored data. The results show that the model captures the behaviour very close to the field data for a slightly higher modulus than that reported in the geotechnical report (BMRC report). This may be due to the fact that the value of modulus calculated experimentally might have some error. The analysis with the Mohr Coulomb model shows that the model over predicts the results very close to the surface of the excavation. This indicates that the influence of load is more on that particular depth for the Mohr Coulomb model. But the stiffness of the lateral support system is uniform throughout the depth; the endochronic model predicts the result more accurately than the Mohr Coulomb model. The strut forces developed in the horizontal support system is observed using the two models. The strut forces in the field is affected by so many factors such as the temperature variation, stages of excavation and other live loads acting on the site, so an exact comparison with the field data is quite difficult. The analysis shows that even though it is difficult to simulate the exact three dimensional nature of the problem in the present study the endochronic constitutive model captures the behaviour very well. The results obtained shows that the endochronic constitutive model implemented in the FLAC3D model library provides a very promising solution like any other constitutive model. As the theory is based on the irreversible law of thermodynamics and the formulation of the constitutive equation are based on the internal energy concept it can represent the material behaviour in accordance with the laws of continuum mechanics. The anisotropic behaviour of soil at higher strain level is well represented through the footing problem. The endochronic constitutive model is a very simple one to simulate the stress strain behaviour of the materials without the concept of yield surface; the parameters used in the equation can be obtained directly from a single triaxial stress strain plot. This study highlights the importance of a model without the concept of yield surface to capture the stress strain behaviour of any materials. Since the model is of completely plastic nature it has its own uniqueness in capturing the material behaviour due to loading and unloading.
44

Bytový dům / Residential Building

Štěpánková, Věra January 2013 (has links)
The project addresses the design documentation of a residential building. It is a detached house. The building has one basement and three floors. Residential house is a basement with a flat roof. The structural system consists of reinforced concrete columns and reinforced concrete ceiling. Perimeter and interior masonry infill masonry infill is composed of blocks YTONG. The roof is a single casing. The construction is based on the foundation footings and passports.
45

Polyfunkční dům / multi-functional building

Navrátil, Tomáš January 2013 (has links)
The Master’s thesis on the theme „Multi function house“ is drafted as a building documentation according to the relevant laws and standards. The project processes a documentation of a new multi fiction apartment house construction with overall 16 flats. Their sizes are from a flat 2+1 to a flat with 4 rooms and kitchenette. Every flat has a garage and a cellar in the first floor. In the house there are 2 offices with a capacity about 12 employees and also 3 commercial premises. Hairdressing parlor and an Apple store are going to by situated into two smaller premises. In the last premise with 263 m2 of floorspace there is going to be a cycling shop. The project is designed as a brick building without basement. The building has two parts with four floors and these parts are united by a single-storey part. The whole building is symetric. The roof is designed as a platform with tend of 3%. On top of the first floor there is going to be a vegetation roof and a roof teracce with a flagging. On the fourth floor there are going to be roof teracces with ceramic pavement. Over the fourth floor there is going to be a roof cllading laden by pebbles. The house is situated in the town Kroměříž, in the pacific neighbourhood near to the historical town center. The neighbourhood of the object is determined for a building-up of family houses. Nearby the house there is a primary school and an athletic ground. The brick object is designed by a construction system Livetherm on the wall footings. The ceiling constructions are from concrete. The Master’s thesis is made as a project realization of building construction part with studies and design fundamentals. The part of the thesis is also the thermal technical recognition, fire recognition of the object and concept of canalization.
46

Autobusové nádraží / Bus station

Kadlecová, Kateřina January 2014 (has links)
Master’s thesis addresses the design and implementation documentation of the three storey bus station in the Czech Krumlov Street Hospital . From this street is also suggested links to the transport infrastructure of the entire plot of land at 497/1 . Object Bus Station is located on the western part of the site . The main entrance is oriented to the southeast side of the building. The main hall on the first floor is primarily used for passengers. There is a waiting room , treasury , information and Internet room. Further, the circuit layout is 7 retail space with a pharmacy for dispensing drugs. The left wing spaces are public toilets and sanitary facilities for employees. There is also a buffet with 30 seats . The second floor space small cafe with a terrace where you can view the historical part of the city . Furthermore, the time of day or a rest room for drivers and office spaces with sanitary facilities . On the third floor are offices spaces again and archives there is also a ventilation machine room and a sprinkler system.
47

Autosalon / Autosalon

Bajer, Radim January 2015 (has links)
This master thesis is focused on elaboration of project documentation for constructing autosalon in Žďár nad Sázavou. Project and appendix are processed by current applicable laws, regulations and standarts. Designed object is situated on plat #6167/2. Both plat sis parts of cadastral area of Žďár nad Sázavou. There are all needed engineering netwoeks nearby. Object is divided on two functional parts, which are operationally and constructionally connected. First part is exhibition and representatice hall, which are capacity of 7 exhibited vehicles. Other partis formed by administrative facilities for staff including sanitary facilities for both staff and visitors. Second part is service for personal and light commercial vehicles with four working stations. Construction is designed reinforced concrete columnar structural system. Plan dimension autosalon is 31,06x22,6m. Plan dimension autoservise is 30,74x18,84m. The cladding autosalon is designed of ceramic tile 250mm. The cladding autoservis is designed of sandwich panel. Roof of building accross the surface is flat roof. Establishment of the object is a combination of footings and foundation belts. Cladding of exhibition hal lis more than 50% glazed. Parts of autosalon and autoservise are designed as sigle storey objects, while administrative part is designed as a two.
48

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.
49

Škola / School

Filla, Josef January 2015 (has links)
The thesis aims to project documentation stage for the execution of the project. It is an object of school for first and second grade. Documentation is prepared on the basis provided architectural studies. The building is situated on the flat, gently sloping land. The work consists of drawing and text documentation, evaluation of thermal, structural and acoustic and lighting requirements for construction, fire safety design of the building. The work includes specialized project on HVAC - heating namely, draft power and boiler room layout and design of concrete structures specialized namely design and dimensioning of cross continuous reinforced slab.
50

Planetárium / Planetarium

Chytil, Lukáš January 2016 (has links)
This diploma thesis focuses on a project of new building of Planetarium in Prostějov in Olomouc district. The project is in accordance eith official assignment and with contemporary Czech standards and legislation. Building is placed to biggest park of Prostějov, next to the centre of city on an empty plot owned by city. Object should serve to the people as a cultural centre. The building plan is irregullarly-sharped with maximum dimensions 47,6 x 26,6 m and has three floors. On the first floor is galery, literature store and cafe and on the second floor is projection room and observatory. Structural systém is skelet and walls from reiforced concrete. Foundations of the building are made of concrete strip foundation and reiforced concrete square footings and strip foundations. Ceilings are made of reiforced concrete panels. There are roofs made by steel cupolas. Unsound walls are made of porous fittings. All external walls and cupolas are insulated with mineral wool. Doors and windows have aluminium frame and triple glazing, inner doors are wooden. As result there’s structurally, operationally and aesthetically functional complex, that will be benefit for the city and its citizens, especially for their cultural life.

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