References of "Odenbreit, Christoph 50002778"
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See detailInfluence of Semi-Continuous Composite Joints on the Natural Frequency and Deflection of Composite Beams
Duarte Da Costa, Job UL; Braun, Matthias; Odenbreit, Christoph UL

in ICASS'2015 International conference series on Advances in Steel Structures & IJSSD 2015 Symposium on Progress in Structural Stability and Dynamics (2015, July)

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See detailThe stress peak at the borehole of point-fitted IGU with undercut anchors
Tibolt, Mike UL; Odenbreit, Christoph UL

in Journal of Facade Design and Engineering (2015), 2(1-2), 33-66

The highest transparency in glass facades is obtained with point fitted glass units. Point fitted insulating glass units minimize thermal bridging and lead to glass facades with better energy efficiency ... [more ▼]

The highest transparency in glass facades is obtained with point fitted glass units. Point fitted insulating glass units minimize thermal bridging and lead to glass facades with better energy efficiency. Though, insufficient knowledge is present to offer a design method for point fittings in insulating glass. Therefore research has been carried out to extend the existing SLG-design-method (Linear superposition of local and global stress components) of Beyer for point fitted single and laminated glass to insulation glass units. This paper presents the first results of this research campaign. Load bearing tests on point fittings in single glazing have been conducted. A finite element model of the point fitting is calibrated by strain comparison. A test campaign for the deviation of a material law for silicone, used as secondary sealant in the edge seal system, is presented. The verified FE-model is implemented in a selected insulation glass unit, and the influence of the edge distance of the point fitting, as well as the edge bond stiffness and geometry on the stress peak at the borehole is investigated. In addition, the size of the so called ‘local area’ is adjusted for insulation glass units. [less ▲]

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See detailPush-out tests with modern deck sheeting and realistic transverse loading
Nellinger, Sebastian UL; Odenbreit, Christoph UL; Lawson, Mark

in 12th International Conference on Steel, Space & Composite Structures (2014, May)

The push-out test as proposed in EN 1994-1-1 originally was developed for solid slabs and not for composite slabs with additional steel sheeting. It leads to a load-slip behaviour of headed shear stud ... [more ▼]

The push-out test as proposed in EN 1994-1-1 originally was developed for solid slabs and not for composite slabs with additional steel sheeting. It leads to a load-slip behaviour of headed shear stud connectors which differs from the behaviour in the real beam. In particular, the vertical forces and negative bending moments of the composite slab at its support are ignored by this setup. Within the European research project “Development of improved shear connection rules in composite beams (DISCCO)” a total of 70 push-out tests was performed to investigate a more realistic push-out test setup. The influence of the transverse loading was investigated to develop a standard push-out test when additional steel sheeting is used. The test regime used to apply transverse loads in this investigation is described and the results of 10 push-out tests with 80 mm deep steel sheeting with pairs of 19 mm diameter headed shear stud connectors are presented. The observed bearing capacities of the shear connectors were over-predicted by the empirical reduction factor given in EN 1994-1-1 and the 6 mm criterion was not always satisfied, especially when no or only low transverse loads were applied. The application of transverse loads improved the ductility of headed shear stud connectors and the bearing capacity increased by up to 41%. [less ▲]

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See detailDevelopment of a constitutive hyperelastic material law for numerical simulations of adhesive steel–glass connections using structural silicone
Dias, Vincent UL; Odenbreit, Christoph UL; Scholzen, Frank UL et al

in International Journal of Adhesion & Adhesives (2014), 48

Silicone elastomers are amongst others employed in glass façades as structural connection materials. They are known to be durable adhesives, able to transfer forces under variable loading and atmospheric ... [more ▼]

Silicone elastomers are amongst others employed in glass façades as structural connection materials. They are known to be durable adhesives, able to transfer forces under variable loading and atmospheric conditions during their design life. For the dimensioning of adhesive joints, numerical simulations are often used, especially for joints which exhibit large deformations and/or for complex geometries. However, silicones have strong non-linear material behaviour already at small strain deformations, are slightly compressible and show a time-depending behaviour. The current existing material laws do not allow for considering these effects properly in simulation, particularly for combined loading. Therefore a hyperelastic material law for silicones has been developed and validated, based on a strain energy function. For this purpose, test series have been carried out to determine all relevant material parameters needed to describe the strain energy potential, namely tension, compression, shear and multi-axial oedometric test series on non-aged and artificially aged specimens. Furthermore, the softening due to low cyclic loading (Mullins’ effect) has been considered and quantified by comparison to quasi-static loading for all test series. The developed hyperelastic model has been implemented into the finite element software Abaqus® for validation and the results of numerical simulations have been compared to experimental results and existing laws. The comparison showed that the proposed model better matched the real behaviour of silicone elastomers and led to an increase in exactness of the numerical simulations of adhesive joints. [less ▲]

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See detailAnalytical extension of a climate load model for undercut point fitted IGU
Tibolt, Mike UL; Hechler, Oliver UL; Odenbreit, Christoph UL

in Louter, Christian; Bos, Freek; Belis, Jan (Eds.) et al Challenging Glass 4 & COST Action TU0905 Final Conference (2014)

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See detailCoSFB – Design and Application of a New Generation of Slim-Floor Construction
Braun, Mathias; Obiala, Renata UL; Odenbreit, Christoph UL et al

in 7th European Conference on Steel and Composite Structures (Eurosteel) (2014)

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See detailPush-out tests with modern deck sheeting to evaluate shear connector resistances
Eggert, Florian; Nellinger, Sebastian UL; Kuhlmann, Ulrike et al

in Eurosteel 2008, 7th European Conference on Steel and Composite Structures (2014)

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See detailInvestigation of the material behaviour of bonded connections with silicone
Staudt, Yves UL; Schneider, Jens; Odenbreit, Christoph UL

in Schneider, Jens; Weller, Bernhard (Eds.) engineered transparency. International Conference at glasstec - Glass | Facade | Energy (2014)

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See detailLatest development in steel and glass engineering
Odenbreit, Christoph UL

Presentation (2013, November 27)

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See detailInnovative conception and design of structural systems for flexible floor spaces
Odenbreit, Christoph UL; Hechler, Oliver UL; Braun, Matthias

in ICSA2013 - Conference book (2013, July)

The pressure in the market of high-rise and multistory office buildings is stimulating innovative solutions for the design of structural systems fulfilling the demand for flexible, sustainable floor ... [more ▼]

The pressure in the market of high-rise and multistory office buildings is stimulating innovative solutions for the design of structural systems fulfilling the demand for flexible, sustainable floor layouts. Steel-concrete composite constructions do comply with related challenges. They offer a wide range of structural solutions to design economic, efficient and sustainable buildings. New composite slabs with sheets of up to 220 mm height are able to span up to 9 m without any intermediate support. These sheets can further be placed on the lower flange of the steel beam to reduce the slab thickness in order to build a "Slim-Floor System". By activating composite action for slim-floor beams due to recent innovations grid spans of about 10 x 14 m are enabled, permitting a huge flexibility in the architectural floor layout. Further the design of composite connection provides significant potential for structural optimization. This potential is outlined and design guidance for simplified and sustainable composite design is given. [less ▲]

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See detailAnalyses of the rotational capacity of composite connections for plastic design
Odenbreit, Christoph UL; Hechler, Oliver UL; Jaspart, Jean-Pierre

in CSSC VII - book (2013, July)

The demand for economic and eco-efficient solutions in construction industry is particularly enforcing efficient design and construction methods. The design of composite construction according to the ... [more ▼]

The demand for economic and eco-efficient solutions in construction industry is particularly enforcing efficient design and construction methods. The design of composite construction according to the plastic hinge theory in combination with semi-rigid joints provides one contemporary promising answer to these demands. This combination enables to mobilize almost all cross section- and system reserves. However, the capability for redistribution of the bending moment from internal support to mid-span, to activate these system reserves, requires sufficient rotation capacity of the composite beam and, especially, the connections. This paper presents design guidance on plastic and robust design of composite beams with semi-rigid composite connections with special focus on the influence of the reinforcement (ratio, diameter and type). With the provision of an engineering logic, new opportunities to design elegant and slender structures are given to engineers in a simple way. [less ▲]

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See detailExperimental investigations and numerical modeling of point-fitted glass panes
Tibolt, Mike UL; Odenbreit, Christoph UL; Hechler, Oliver UL

in ICSA2013 - Conference book (2013, July)

The highest transparency of façades is to be obtained by the use of point-fitted glass units. To comply with the demand for energy efficiency the use of insulating glass units is required. However ... [more ▼]

The highest transparency of façades is to be obtained by the use of point-fitted glass units. To comply with the demand for energy efficiency the use of insulating glass units is required. However, insufficient knowledge is present for point fittings in insulating glass which is a drawback of this kind of construction. Therefore research has been carried out to extend an existing design-method, the SLG-method, to insulating glass. In this paper, first, experimental investigations in point-fitted single glass units and the results are presented. Secondly, a numerical model is introduced which has been calibrated to this test data. This model will subsequently be extended to other geometries and the stress peaks at the borehole as well as the size of the local area for the SLG-method will be determined. Therefore this paper presents the preparation process for the application of the SLG-method for insulation glass units. [less ▲]

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See detailNumerical investigation of insulation glass units with undercut point fittings
Tibolt, Mike UL; Odenbreit, Christoph UL; Hechler, Oliver UL

in European COST Action TU0905 - Book (2013, April)

The highest transparency in glass façades is obtained with point fitted glass units. Point fitted insulating glass units minimize thermal bridging and lead to glass façades with better energy efficiency ... [more ▼]

The highest transparency in glass façades is obtained with point fitted glass units. Point fitted insulating glass units minimize thermal bridging and lead to glass façades with better energy efficiency. Though, insufficient knowledge is present to offer a design method for point fittings in insulating glass. Therefore research has been carried out to extend the existing SLG-design-method of Beyer for point fitted single and laminated glass to insulation glass units. This paper presents first results of this research campaign. Load bearing tests on point fittings in single glazing have been conducted. An FEA-model of the point fitting is calibrated by the test data according to the method of Kasper. By means of this verified FEA-model, the influence on the stress peak at the borehole of the edge distance of the point fitting as well as the edge bond is investigated. In addition, the size of the so called “local area” is adjusted for insulation glass units. [less ▲]

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See detailDetermination of the material properties of an epoxy and MS-polymer for adhesive point-fixings
Dispersyn, Jonas; Belis, Jan; Dias, Vincent UL et al

in COST Action TU0905 book (2013, April)

Adhesive point-fixings are being used more frequently because of their numerous advantages compared to traditional bolted connections, such as a better load introduction, the absence of drilling holes in ... [more ▼]

Adhesive point-fixings are being used more frequently because of their numerous advantages compared to traditional bolted connections, such as a better load introduction, the absence of drilling holes in the glass and increased thermal performances. For the analysis of such fixings the use of finite element analyses is necessary. The adhesive properties in these finite element analyses are presented on the basis of stress-strain curves. The determination of the stress-strain curves is done by experimental testing on bulk material of the adhesive. With these tests the displacement rate reliance can also be studied. In this contribution, the fabrication and testing of test samples is described for two selected adhesives. The experimental data show that the selected adhesives behave stiffer under tension as the displacement rate is decreased. [less ▲]

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See detailEnergy performance assessment of an existing double-skin façade: measurements and simulation
Carton, Julien UL; Scholzen, Frank UL; Thomas, Sébastien et al

in Energy Forum - Solar Building Skins, 06 - 07 December 2012, Italy (2012, December)

An existing office building with an active double skin façade in Luxembourg has been analyzed. In the first step in-situ measurements have been performed. For this purpose outside, inside and cavity ... [more ▼]

An existing office building with an active double skin façade in Luxembourg has been analyzed. In the first step in-situ measurements have been performed. For this purpose outside, inside and cavity conditions have been measured for representative summer and winter conditions. In a second step, a thermal simulation using TRNSYS was performed. The simulation model has been compared to the time limited series of measurements and thus has been validated for some of the annual meteorological conditions. Then the model has been extrapolated to a whole year in order to assess the energy performance of the given façade. Further a parametric study of alternative façades has been carried out based on the validated simulation model to assess their own performances. For the given case study building, the double skin concept energetically performs well compared to other concepts with non outside (non weather exposed) solar protection, but worse than an external solar protection. The thermal comfort level in the rooms has also been determined by simulation - the calculated room averaged comfort level is quite optimal, but further investigations regarding the local comfort close to the glazed façades still have to be achieved. [less ▲]

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See detailDevelopment of material law for silicone to simulate structural adhesive connections
Dias, Vincent UL; Odenbreit, Christoph UL; Hechler, Oliver UL et al

in Jens Schneider, Bernhard Weller (Ed.) Engineered Transparency Handbook (2012, October)

Recently developed adhesive materials enable the transfer of high loads between glass and other materials for structural use. However, for a numerical simulation, the description of the non-linear ... [more ▼]

Recently developed adhesive materials enable the transfer of high loads between glass and other materials for structural use. However, for a numerical simulation, the description of the non-linear behaviour of the adhesives must still be improved. Therefore extensive experimental investigations have been carried out on a structural elastomer and a material constitutive model has been derived based on the experimental results. Via numerical studies, the new constitutive model has been validated and assessed by comparison to test data and existing models. [less ▲]

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See detailDetermination of Adhesives Properties for Non-linear Numerical Simulation of Structural Steel-Glass Connections
Dias, Vincent UL; Odenbreit, Christoph UL; Hechler, Oliver UL

in Bos, Louter, Nijsse, Veer (Ed.) Handbook of the Challenging Glass 3 conference (2012, June)

In the construction of façades, connections between glass and glass as well as other materials with varying properties, e.g. metals, are currently designed with, inter alia, the application of adhesives ... [more ▼]

In the construction of façades, connections between glass and glass as well as other materials with varying properties, e.g. metals, are currently designed with, inter alia, the application of adhesives. The related analytical evaluation of the load bearing characteristics of these kinds of assemblies requires the correct determination of the adhesives’ properties; knowledge in this field is still incomplete. Therefore an extensive test campaign on the load bearing and displacement behaviour of common structural silicone and UV-acrylic was carried out with the aim, to identify appropriate models to describe their properties under quasi-static loading and for their implementation in numerical analyses. The test program, comparisons between the different adhesive materials and a summarised outcome will be presented in this paper. [less ▲]

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See detailDesign concept for point fitting of insulation glass units
Hechler, Oliver UL; Tibolt, Mike UL; Odenbreit, Christoph UL et al

in VI International Congress on Architectural Envelopes - Book (2012, June)

The façade significantly influences the energy efficiency of the building. However, in addition to high insulating properties, modern architecture demands a high transparency for natural illumination and ... [more ▼]

The façade significantly influences the energy efficiency of the building. However, in addition to high insulating properties, modern architecture demands a high transparency for natural illumination and the compliance with inner comfort criteria in the building. The increasing use of glass can be seen as the architectural intention to combine those well-being and energetic principles. The highest transparency can be achieved with point-fitted glass units. Though, insufficient knowledge is present to use point fittings for insulation glass units, which are required to comply with the demand for energy-efficiency. Therefore, research has been carried out to investigate in the load bearing mechanism of different point-fitted insulating glass units in order to find an innovative point fitting connection system for insulating glass units to the steel substructures. This paper presents results of this research campaign and provides information on how to design point-fitted insulating glass units. [less ▲]

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See detailInvestigations into the Safety Level of Marine Steel Sheet Pile Structures with Consideration of Corrosion
Odenbreit, Christoph UL; Osório, Paulo; Van Baars, Stefan UL et al

in Proceedings of the 20th Australasian Coastal and Ocean Engineering Conference 2011 and the 13th Australasian Port and Harbour Conference 2011 (2011, October)

In this paper, several reliability analyses of a sheet pile wall in a marine environment were performed, in which the influence of a wide range of corrosion models was assessed. The influence of the ... [more ▼]

In this paper, several reliability analyses of a sheet pile wall in a marine environment were performed, in which the influence of a wide range of corrosion models was assessed. The influence of the corrosion was compared in structures with different conditions (two different sheet pile profiles were used, as well as two values of the sheet pile length and also two different values of the surcharge). To perform the reliability analyses, the First Order Reliability Method (FORM) was used and reliability analyses were performed using a combination of different programs. The effect that the variation of the coefficient of variation v of the probability distributions has on the measured level of safety is not linear. For certain ranges of v, the influence on the safety level is not very significant, whereas in other ranges it causes an abrupt reduction of the safety, meaning that access to data of thickness loss due to corrosion of good quality (that represent reality as accurately as possible) is very important to avoid erroneous conclusions about the safety. [less ▲]

Detailed reference viewed: 67 (1 UL)