Academic literature on the topic 'Free-storey building'
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Journal articles on the topic "Free-storey building"
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Gajbhiye, Akshay. "Comparative Study of RC Multistorey Building with Floating Column and Shear Wall Subjected To Seismic Load." International Journal for Research in Applied Science and Engineering Technology 9, no. 9 (September 30, 2021): 528–35. http://dx.doi.org/10.22214/ijraset.2021.38011.
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Abstract : In modern multistorey building construction, irregularities like the soft storey, vertical and plan irregularities, floating columns etc are very common. Building with an open ground storey for parking is a common feature that results in floating columns. Floating columns provide column free space and a good aesthetic architectural view of the building. floating column means the end of any vertical element that rests on the beam which leads to discontinuity of columns such that the path of load distribution in multi-storey buildings is disturbed. The use of a floating column also tends to increase the moment in the column, storey shear etc which highly undesirable in seismically active areas. So, the study of the best location where the floating column needs to be provided to reduce the impact due to seismic loads is of primordial importance. Shear wall is a vertical member which is provided from foundation to top storey. In this study shear wall is used in the direction of orientation so that it provides additional strength and stiffness to the buildings. In the present analysis, 8 models are studied. The first model considers a multi-storeyed building without any shear wall and floating column. Other models analysed are with shear wall and by varying the location of floating columns. The analysis and design are done by STAAD.pro V8i SS6 version software and the method used is response spectrum analysis in earthquake zone 4. The effect of floating column location on parameters such as Base shear, Displacement, Maximum moment, storey shear and percentage of steel reinforcement are discussed. The comparison of results of different models is also carried out in detail using graphs and bar charts in this study. The suitable location for providing a floating column with the shear wall is also discussed. Keywords: Floating column, Shear wall, Seismic load, STAAD.pro.v8i, Response Spectrum Analysis.
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Guptaa, Samrat, P. R. Kannanra jkumar, P. T. Ravichandran, and L. Krishnaraj. "Seismic behavior of transfer girder in multi-story building." International Journal of Engineering & Technology 7, no. 3.3 (June 8, 2018): 36. http://dx.doi.org/10.14419/ijet.v7i2.33.13849.
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Urbanization had led to many housing problems in India. Scarcity of land is one such biggest problem in India. This issue is one of the most pivotal issues that need to be provided with a swift and efficient solution if we want to grow as a nation whilst achieving the goals we are aiming at. Hence, there is a rise in many Multi storey and Highrise structure. Rise in car park and open column free space for auditoriums. The study focuses on the study of seismic assessment of the Multi-storey structure with transfer girder. The use of transfer girders in a building will help to a greater extent to minimize the issue regarding the lack of space for car parking. A building prototype model with transfer girder at different level was analyzed using elastic linear response spectrum. Different results such as Base Shear, Time Period, Interstorey Drift and Displacement had been analysed in different model and optimum modeling of Multi storey RC Frame building with transfer girder system using SAP 2000 and also comparison on performance of Multi storey building by placing the transfer girder in different level has been carried out.
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Butt, Faheem, and Piotr Omenzetter. "Evaluation of Seismic Response Trends from Long-Term Monitoring of Two Instrumented RC Buildings Including Soil-Structure Interaction." Advances in Civil Engineering 2012 (2012): 1–18. http://dx.doi.org/10.1155/2012/595238.
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This paper presents analyses of the seismic responses of two reinforced concrete buildings monitored for a period of more than two years. One of the structures was a three-storey reinforced concrete (RC) frame building with a shear core, while the other was a three-storey RC frame building without a core. Both buildings are part of the same large complex but are seismically separated from the rest of it. Statistical analysis of the relationships between maximum free field accelerations and responses at different points on the buildings was conducted and demonstrated strong correlation between those. System identification studies using recorded accelerations were undertaken and revealed that natural frequencies and damping ratios of the building structures vary during different earthquake excitations. This variation was statistically examined and relationships between identified natural frequencies and damping ratios, and the peak response acceleration at the roof level were developed. A general trend of decreasing modal frequencies and increasing damping ratios was observed with increased level of shaking and response. Moreover, the influence of soil structure interaction (SSI) on the modal characteristics was evaluated. SSI effects decreased the modal frequencies and increased some of the damping ratios.
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Burlachenko, Oleg V., Oksana G. Chesnokova, and Tatiana F. Cherednichenko. "The Usage of Modern Inorganic Composite Material in the Design of Insulation of Unheated Smoke-Free Stairwells." Defect and Diffusion Forum 410 (August 17, 2021): 599–604. http://dx.doi.org/10.4028/www.scientific.net/ddf.410.599.
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The article describes the problems that arise during the operation of unheated, smoke-free stairwells in multi-storey residential buildings. Measures are proposed for thermal protection of premises adjacent to stairwells of the H1 type. To solve the problems of improving the energy efficiency of the building, it is proposed to use modern thermal insulation material. In addition, a constructive solution is proposed for the insulation of the internal walls of an unheated, smoke-free stairwell using foam glass, which will ensure the strength, durability and reliability of thermal protection and finishing. Using modern composite materials, it is possible to improve the energy efficiency of the building.
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Sivakumaran, K. S. "Lateral load response of unbraced steel building frames." Canadian Journal of Civil Engineering 17, no. 6 (December 1, 1990): 974–86. http://dx.doi.org/10.1139/l90-109.
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The standard CAN3-S16.1-M84 "Steel structures for buildings — limit states design" recognizes three sets of assumptions in the analysis, design, and construction of steel buildings. In two of them the connections are assumed to be either fully rigid (continuous construction, clause 8.2) or completely free (simple construction, clause 8.3.1). In the third type of construction, termed here as "special simple construction" (clause 8.3.2), the beam-to-column connections are assumed to be completely free (pinned) to resist gravity loads and are assumed to be rigid to resist the lateral loads due to earthquake or wind. Such connnections are designed for moments due to lateral loads only, and thus they are more flexible and may yield at ultimate load levels. This paper illustrates the analysis and design of two (one 5-storey and the other 10-storey) office buildings assumed to be located in Hamilton, Ontario, on the basis of special simple construction. Using realistic connection behaviour, the influence of connection flexibility and strength on the performance of these buildings is studied. In the nonlinear static analysis, the buildings have been subjected to gravity loads and incremental lateral loads until failure. For comparison purposes, the building frames were also analysed and designed, based on continuous construction assumptions. The results showed increased drifts and decreased overall strength due to connection flexibility and strength. Thus, the system based on continuous construction structurally performs better than the system based on special simple construciton. As far as the economy is concerned both systems appear to be equivalent. Key words: building design, steel structures, flexible connections, analysis, wind load, earthquake load, strength.
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Jameel, Mohammed, A. B. M. Saiful Islam, Mohammed Khaleel, and Aslam Amirahmad. "EFFICIENT THREE-DIMENSIONAL MODELLING OF HIGH-RISE BUILDING STRUCTURES." Journal of Civil Engineering and Management 19, no. 6 (October 24, 2013): 811–22. http://dx.doi.org/10.3846/13923730.2013.799096.
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A multi-storey building is habitually modelled as a frame structure which neglects the shear wall/slab openings along with the inclusion of staircases. Furthermore, the structural strength provided by shear walls and slabs is not precisely incorporated. With increasing building height, the effect of lateral loads on a high-rise structure increases substantially. Inclusion of shear walls and slabs with the frame leads to improved lateral stiffness. Besides, their openings may play imperative role in the structural behaviour of such buildings. In this study, 61 multi-storey building configurations have been modelled. Corresponding analyses are performed to cope with the influence of shear walls, slabs, wall openings, masonry walls and staircases in addition to frame modelling. The finite element approach is used in modelling and analysis. Structural responses in each elemental combination are evaluated through equivalent static and free vibration analyses. The assessment reveals that inclusion of only slab components with frame modelling contributes trivial improvement on structural performance. Conversely, the presence of shear wall slabs with frame improves the performance noticeably. Increasing wall openings decreases the structural responses. Furthermore, it is not recommended to model staircases in addition to frame–slab–shear wall modelling, unless the effect of wall openings and slab openings is adequately considered.
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Manz, Heinrich, Daniel Micallef, Simon Paul Borg, and Vincent Buhagiar. "A parametric building energy simulation case study on the potential and limitations of passive design in the Mediterranean climate of Malta." Sustainable Buildings 3 (2018): 4. http://dx.doi.org/10.1051/sbuild/2018004.
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The present case study sets out to investigate the potential and limitations of passive building design in a typical Mediterranean climate. The Maltese Islands were taken as the case study location. Assuming a fully detached, cuboid-shaped, generic multi-storey office building, one representative storey was modelled by means of the building energy simulation code WUFI®Plus. Thermal comfort was analysed based on the adaptive acceptable operative room temperature concept of EN 15251 for buildings without mechanical cooling systems. Assuming neither artificial heating nor cooling, the free-running operative room temperature was evaluated. By means of a parametric study, the robustness of the concept was analysed and the impact of orientation, window to wall area ratio, glazing, shading, thermal insulation, nighttime ventilation and thermal mass on the achievable level of thermal comfort is shown and discussed. It is concluded that in a well-designed building and by means of decent insulation (present case: Uwall = 0.54 W/(m2 · K)), double glazing, variable external shading devices and passive cooling by nighttime ventilation, a high level of thermal comfort is achievable in this climate using only very minor amounts of energy for artificial heating and cooling or possibly even none at all.
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Taki, A. H., and D. L. Loveday. "Surface Convection Coefficients for Building Facades with Vertical Mullion-Type Protrusions." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 210, no. 2 (April 1996): 165–76. http://dx.doi.org/10.1243/pime_proc_1996_210_024_02.
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Accurate knowledge of the heat transfer processes that take place at the external surfaces of a building is necessary for thermal modelling and for design purposes. Using a heated test plate fixed at the sixth-floor level to the wall of an eight-storey building, correlations are presented for the external convection coefficient, hc, as a function of wind speeds measured 1 metre from the test surface and 11 metres above the roof in the free stream. The effects of vertical mullion-type protrusions on the value of hc are measured for a range of protrusion heights separated by a fixed spacing, the geometries tested relating to facade configurations which are commonly found in British commercial high-rise buildings. Regression correlations are derived which may be used by designers and thermal modellers for the prediction of hc values for a range of typical building facades with vertical mullion-type protrusions.
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Peretolchina, Lyudmila V., and Lyudmila V. Glebushkina. "Analysis of the current state of multi-storey residential areas in the city of Dushanbe." Journal «Izvestiya vuzov. Investitsiyi. Stroyitelstvo. Nedvizhimost» 10, no. 3 (2020): 460–69. http://dx.doi.org/10.21285/2227-2917-2020-3-460-469.
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The aim is to identify the parameters of inter-highway micro-district areas having a significant impact on the quality of the urban environment. A classification of the inter-highway areas of existing multi-storey building systems in Dushanbe was proposed according to the following urban development indicators: absolute (micro-district area, building area, total area of the housing stock, area of all floors of buildings and structures, population); relative (population density, housing stock density); specific (land-to-building ratio, building development density factor). The classification covering 36 micro-districts of the central area of the Dushanbe agglomeration was developed using the method of hierarchical clustering implemented in the Statistical Package for the Social Sciences software. A dendrogram constructed using the method of intra-group connections showed that the existing development of Dushanbe features both problematic and problem-free inter-highway areas. Prob-lematic inter-highway areas are those micro-districts where the density of population and housing stock are overestimated in comparison with their values specified by the regulatory framework 1958–89 adopted across the entire USSR. Problem-free inter-highway areas are those micro-districts where the urban development indicators meet the regulatory requirements of both previous and mod-ern periods. The proposed classification of inter-highway areas in Dushanbe can be used as a con-ceptual and methodological basis for planning new housing construction in the sites under recon-struction and vacant sites.
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Guerrero Bobadilla, Héctor, Tianjian Ji, and José Alberto Escobar. "EXPERIMENTAL STUDIES OF A STEEL FRAME MODEL WITH AND WITHOUT BUCKLING-RESTRAINED BRACES." Revista de Ingeniería Sísmica, no. 95 (December 31, 2016): 33–52. http://dx.doi.org/10.18867/ris.95.338.
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This paper presents comparative experimental studies of a five-storey steel-frame model at a scale of 1/10 with, and without, buckling-restrained braces (BRBs). The building model was subjected to free vibration tests and shaking table tests. The latter were conducted using low-intensity white noise and seismic input. From the free vibration tests and shaking table tests with low-intensity white noise, it was found that the BRBs contributed a significant amount of damping. This happened to the model even at low levels of vibration. The shaking table tests with seismic input were conducted using seven earthquake records, taken in the lakebed zone of Mexico City with seismic intensities from pga=0.1g to 0.25g. At an intensity of pga=0.1g, the results show that the model fitted with BRBs had a significantly smaller response than the bare model, in terms of displacement, inter-storey drift, floor velocity and floor acceleration. The higher intensities were only applied to the model fitted with BRBs. The results indicate that the model with BRBs was able to withstand about 2.5 times the seismic intensity of the bare model, in terms of lateral displacement, inter-storey drift and Arias Intensity, as a measure of the energy contents of the movement. At the end of the tests, all BRBs were removed and the model remained in its original undamaged state.
Dissertations / Theses on the topic "Free-storey building"
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Srpek, Stanislav. "Dům s pečovatelskou službou v Libčanech." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265674.
Full textConference papers on the topic "Free-storey building"
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Chen, Hsiao-Hui, and Udo Dietrich. "Urban density for a carbon free city in different climates." In 24th ISUF 2017 - City and Territory in the Globalization Age. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/isuf2017.2017.5487.
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In a carbon free city, the energy demand, including thermal energy (heating, cooling and hot water), power (ventilation and artificial light) in buildings and transport, need to be covered by the renewables gained on site or in the surrounding area outside of the town. This means a huge compensating area is required for harvesting renewable energy. This paper aims to explore the urban density that could potentially achieve the balance among three requirements: energy saving, land saving, and human scale. By holding constant of building type, estate size, thermal energy system, power harvesting system, lighting system and traffic energy (electric car), different scenarios of urban density in various climate zones were compared. The results show that, although increasing urban density by increasing number of storey does reduce transportation energy consumption, the rate of decreased transportation energy consumption slows down as the number of storey increases. Also, artificial light will reach saturation (100% of hours of use) with increased number of storeys and, therefore, increase building energy consumption. For cold or moderate climates, the optimal scenario would be 4 to 6 storeys with street width of 25m. For the hot and humid climates, the optimal choice would be 6 to 8 storeys and the effect of urban density on the land-use requirement is larger than the effect of compensating area because heating is power-based. These optimal ranges of number of storey provide good daylight access and also fall into the range of human scale.