| 1. |
- Pavlovic, Marko, et al.
(författare)
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Headed Shear Studs versus High-Strength Bolts in Prefabricated Composite Decks
- 2016
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Ingår i: Composite Construction in Steel and Concrete VII. - New York : American Society of Civil Engineers (ASCE). - 9780784479735 ; , s. 687-702
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Konferensbidrag (refereegranskat)abstract
- Prefabricated steel and concrete composite decks are an interesting option to improve competitiveness and sustainability of the composite structures. Longitudinal shear connection is usually established by grouped headed studs, but possible alternative solution is to use bolted shear connectors. Welded headed studs and bolts (grade 8.8) are experimentally examined in the push-out tests (four tests on each). The same arrangement and dimensions of shear connectors (16 mm diameter and 100 mm height above flange) are considered and their resistances and behaviour are compared. Experimental results showed that headed studs and bolted shear connectors have similar shear resistance, while headed studs are more ductile. FEA is performed by ABAQUS/Explicit solver with damage material models to get more insight into behaviour of the specimens. FEA shows rather good agreement with experimental results. Influence of the bolt to hole clearance on the behaviour of specimens with bolted shear connectors is analysed and discussed
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| 2. |
- Pavlović, Marko, et al.
(författare)
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Recent research of shear connection in prefabricated steel-concrete composite beams
- 2014
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Ingår i: Journal of Applied Engineering Science. - : Centre for Evaluation in Education and Science (CEON/CEES). - 1821-3197. ; 12:1, s. 75-80
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Tidskriftsartikel (refereegranskat)abstract
- Prefabrication of steel-concrete composite decks can improve their competitiveness and sustainability. This paper presents recent studies of longitudinal shear connection at the University of Belgrade, Faculty of Civil Engineering. Grouped welded headed studs and bolted shear connectors, suitable for prefabricated composite construction, has been examined in push-out tests. Totally 30 tests were conducted, and advanced FEA were made using Abaqus/Explicit dynamic solver. Based on the experimental and numerical studies behaviour those two shear connectors are compared.
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| 3. |
- Spremic, Milan, et al.
(författare)
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Push-out experiments of headed shear studs in group arrangements
- 2013
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Ingår i: Advanced steel construction. - 1816-112X. ; 9:2, s. 139-160
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Tidskriftsartikel (refereegranskat)abstract
- Precast concrete slabs connected to the steel beams by headed shear studs arranged in groups may be used in high-rise office buildings to speed up construction process and improve quality by increasing the grade of industrialization. The paper presents experimental research performed on push-out tests at the Faculty of Civil Engineering University in Belgrade. The main goal has been to investigate possible reductions of shear stiffness and strength of five group arrangements consisting always of four headed shear studs, the shank diameter 16 mm and 100 mm height. A shape of group arrangement and its orientation to the applied load, and distance between the studs were variables considered. Intention was to have as small as possible holes in precast concrete slabs so the distance between studs was lower than minimum required in Eurocode 4. Comparison is made with results obtained on specimen with uniformly distributed shear studs, according to requirements of the standard arrangement. Material characteristics were obtained and push-out tests were preformed in procedures that fully comply with Eurocode 4.
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| 4. |
- Andersson, Jörgen, et al.
(författare)
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Design Guide : Dimensionering av ekonomiska och långsiktigt hållbara samverkansbroar med integrerade landfästen.
- 2011
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Denna dimensioneringshandbok är ett resultat av forskningsprojektet RFS-PR-04120 INTAB “Economic and Durable Design of Composite Bridges with Integreral Abutments” (Feldmann, et al., 2010) och det efterföljande disseminationsprojektet RFS – P2 - 08065 INTAB+ “Economic and Durable Design of Composite Bridges with Integreral Abutments” (Feldmann, et al., 2012), som varit delfinansierat av EU:s forskningsfond ”Research Fund for Coal and Steel” (RFCS) samt Svenska Byggbranschens Utvecklingsfond (SBUF). Inom forskningsprojektet har väsentlig kunskap inhämtats för att skapa möjlighet att öka konkurrenskraften hos samverkansbroar med integrerade landfästen. Denna kunskap har inarbetats i denna dimensioneringshandbok, vars engelska version har presenterats vid ett antal internationella seminarier och workshops.
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| 5. |
- Andrade, Pedro, et al.
(författare)
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Assessment and monitoring of a student residential building using an innovative execution solution
- 2013
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Ingår i: Proceedings of SB13 Portugal. - Guimarães, Portugal. - 9789899654372 ; , s. 403-410
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Konferensbidrag (refereegranskat)abstract
- The construction, fit-out, operation and the final demolition of buildings contributes to a large-scale negative impacts on the environment, even at the level of material and energy consumption, or even because the inefficient infrastructure. This document is based on a thorough study that encompasses the design phase, construction, use and, finally,the end of life. This work it is followed by an innovative modular building and execution process, within theFRAMEUP project, which will take place in Lulea, Sweden. The aim of this study is to analyze the sustainability of this future building; first from an energy point of view so as to know the specific energy consumption using specific software, and on the other hand from an environmental stand point by leading a complete life-cycle assessment (cradle-to-grave).
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| 6. |
- Andrade, Pedro, et al.
(författare)
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Design and execution of a 3D modular building
- 2014
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Ingår i: Eurosteel 2014. - Brussels, Belgium : European Convention for Constructional Steelwork, ECCS. - 9789291471218 ; , s. 103-104
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Konferensbidrag (refereegranskat)
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| 7. |
- Andrade, Pedro, et al.
(författare)
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Innovative Construction of Student Residences : Frameup concept
- 2015
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Ingår i: The 13th Nordic Steel Construction Conference. - Tampere : Tampere University of Technology, Department of Civil Engineering. - 9789521535789 - 9789521535796 ; , s. 199-200
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Konferensbidrag (refereegranskat)abstract
- Sweden has a strong demand on the construction of student accommodations and therefore significant efforts have been taken towards an affordable and easy solution of the problem. A concept combining these requirements may be based on the use of structural steel frames in combination with prefabricated 3D modules fully equipped and suitable for student accommodations. Therefore, the need to investigate and develop a system suitable for an effective assembly of student residences is considered in this paper, as part of an international project, Optimization of the frames for effective assembling - FRAMEUP. The Fig. 1 reveals an overview of the system within the execution process.The Frameup system introduces a new approach in terms of execution technique which consists of the execution of a building starting from the roof to the 1st floor. The existence of a lifting system constituted of a horizontal rigid frame - grid - in combination with lifting towers - pylons - permits the erection of the building, promoting each time the building is lifted, a clearance of one-floor-height plus tolerances at the ground level. This creates room enough for the assembly of the lower floor from below the previously assembled floor. The procedure is repeated several times according to the number of floors until the 1st floor of the building, the last floor of the execution sequence, is assembled. Moreover the Frameup system introduces an innovation, the Frameup conveyor system, which streamlines the assembly process so to move/slide the elements, as they come, directly from the lorry to their final position in the building.The development of the Frameup system benefits from a stepwise detailed 3D modeling and structural analysis and design tools. However, when it comes to attest the reliability and efficiency of the system, a full scale feasibility test is essential and it is performed on the majority of the sequences of construction.
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| 8. |
- Andrade, Pedro, et al.
(författare)
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Innovative system for the construction and management of student resisdences : Frameup system
- 2016
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Ingår i: IABSE CONGRESS, STOCKHOLM, 2016. - CH - 8093 Zürich, Switzerland : International Association for Bridge and Structural Engineering. - 9783857481444 ; , s. 1364-1370
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Konferensbidrag (refereegranskat)abstract
- Sweden has a strong demand on the construction of student accommodations and consequently significant efforts have been taken to increase and streamline construction methods. In addition, the fluctuation on the number of students admitted at each year, in each university, lead to periods of house shortage or, in opposition to that, to eventual surplus on the housing market. For these reasons urges finding a fast execution process in construction to fulfil the market needs, together with a housing mechanism of control which balances the students’ needs with the housing availability. In this sense, the Frameup system arises as a solution to solve both problems by combining a modular construction with an innovative execution process.The FRAMEUP buildings uses a steel frame in combination with prefabricated 3D modules - fully equipped and suitable for student accommodations – which are assembled by starting from the roof to the 1st floor. The existence of the lifting system permits the erection of the building, promoting each time the building is lifted, a clearance of one-floor-height, at ground level, for the assembly of a new floor. The procedure is repeated several times, according to the number of floors, until the 1st floor of the building, the last floor of the execution sequence, is assembled.Alongside with its advantage on the fast execution, the Frameup system allows to efficiently increase or decrease the number of the floors and consequently its exchangeability with other buildings of same nature. Thus, assuming a net of FRAMEUP buildings at each university, its exchangeability system would create the necessary conditions so that the number of floors at each campus would follow the fluctuations of the students’ population among the different universities on different periods of time, so to suppress the needs for housing or to avoid the surplus on construction.
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| 9. |
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| 10. |
- Andrade, Pedro, et al.
(författare)
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Structural assessment of a column splice with opened slotted holes : Finger Connection
- 2017
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Ingår i: ce/papers. - : Ernst & Sohn Verlag. - 2509-7075. ; 1:2-3, s. 514-521
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Tidskriftsartikel (refereegranskat)abstract
- This paper introduces a novel joint based on a friction connection designed for column-splices. The jointwas developed within the scope of modular construction to improve the fast assembly of prefabricatedframes and to accommodate eventual misalignments. Gaps at the connection are considered on the jointhorizontal and vertical axis to accommodate misalignments whether they are rotations and/ordisplacements and so to allow for the easy fit of the columns. The efficiency of the joint resistance basedon different connection gaps subjected to uniform compression is assessed.
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