Integriertes Deckensystem für den Stahl‐ und Verbundbau

Kopp, Maik; Christou, George; Stark, Alexander; Hegger, Josef; Feldmann, Markus

doi:10.1002/stab.201810569

Cited by 7 publications

(4 citation statements)

References 29 publications

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“…On the other hand, to demonstrate superior strength and stiffness, novel types of shear connectors are developed as alternatives: perfobond shear connectors [38][39][40], Y-type perfobond rib shear connectors [41][42][43], bar-ring shear connectors [44][45][46], puzzle-shaped shear connectors [47][48][49], and clothoid-shaped shear connectors [50][51][52]. Furthermore, recent research has revealed the innovative shear connectors' cyclic and fatigue behavior [53][54][55][56][57] and their mechanical performance with damaged concrete [58]. This research examines the clothoid-shaped shear connectors as a representative case of the novel shear connectors mentioned above.…”

Section: Structural Damage Detection Of a Concrete Slab Using Piezoel...mentioning

confidence: 99%

Structural Damage Detection Technique of Secondary Building Components Using Piezoelectric Sensors

Suzuki,

Liao,

Shibata

et al. 2023

Buildings

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With demand for the long-term continued use of existing building facilities, structural health monitoring and damage detection are attracting interest from society. Sensors of various types have been practically applied in the industry to satisfy this need. Among the sensors, piezoelectric sensors are an extremely promising technology by virtue of their cost advantages and durability. Although they have been used in aerospace and civil engineering, their application for building engineering remains limited. Remarkably, recent catastrophic seismic events have further reinforced the necessity of rapid damage detection and quick judgment about the safe use of facilities. Faced with these circumstances, this study was conducted to assess the applicability of piezoelectric sensors to detect damage to building components stemming from concrete cracks and local buckling. Specifically, this study emphasizes structural damage caused by earthquakes. After first applying them to cyclic loading tests to composite beam component specimens and steel frame subassemblies with a folded roof plate, the prospective damage positions were also found using finite element analysis. Crack propagation and buckling locations were predicted adequately. The piezoelectric sensors provided output when the concrete slab showed tensile cracks or when the folded roof plate experienced local buckling. Furthermore, damage expansion and progression were detected multiple times during loading tests. Results showed that the piezoelectric sensors can detect the structural damage of building components, demonstrating their potential for use in inexpensive and stable monitoring systems.

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Section: Structural Damage Detection Of a Concrete Slab Using Piezoel...mentioning

confidence: 99%

Structural Damage Detection Technique of Secondary Building Components Using Piezoelectric Sensors

Suzuki,

Liao,

Shibata

et al. 2023

Buildings

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“…headed studs. In addition to increased material efficiency [1][2][3] and corresponding lower CO2 emissions, structural components with composite dowels are characterized by a simple manufacturing process. Both the flame cutting process and the welding of the composite dowel strips can be automated [4].…”

Section: Introduction and State Of The Artmentioning

confidence: 99%

Development of a Consistent Design Concept for Composite Dowels

et al. 2023

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Composite dowels are an economically and technically reasonable alternative to the conventional shear connectors, the headed studs. However, their competitiveness is limited by the fact that they are only approved nationally and for a limited period of time, whereas headed studs are firmly anchored in European regulations. Numerous investigations, performed on a national and international level for decades, were necessary in order to enable an integration of composite dowels into the European standards. This paper summarizes the extensive investigations on the influence of cracked concrete, of tensile and combined shear‐tensile loads as well as of composite dowel positions close to the surface on the load‐bearing behaviour of composite dowels. Based on these and former investigations, a consistent design concept for composite dowels was developed, which will also be presented within this paper and shall form the basis for the introduction into European standardization.

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“…While high stiffness is required from the connectors to minimize the deflection of composite girders, they must also be ductile in order to allow for force redistribution within the composite joint and thus a plastic design. Composite dowels possess both these properties and are therefore favoured increasingly both in building [1][2][3][4][5][6] and bridge [7][8][9][10][11][12][13][14][15][16] constructions. These innovative shear connectors are cut into the steel web or into the flanges of steel girders and positioned within the concrete slab, as shown in an example in Figure 1a or Figure 1c.…”

Section: Introductionmentioning

confidence: 99%

Combined Shear-Tension Loading of Composite Dowels in Cracked Concrete—Experimental Investigations and Design

et al. 2022

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The importance of slim decks has led engineers to the exploration of high-strength materials and also of innovative shallow shear connectors, such as composite dowels in the case of composite constructions. Minimizing the overall slab depth often leads to composite girders being weakened by means of web openings that are necessary for installations such as ventilation ducts. Depending on the geometrical and loading conditions, some of the shear connectors are subjected to a combination of tensile and shear forces. However, the load-bearing behaviour of these connectors has only been rudimentarily investigated in the case of shear-tensile interaction. In addition, the load-bearing capacity of composite dowels under combined tensile and shear forces has not been investigated in cracked concrete. Earlier investigations under pure shear and pure tensile loading indicate a dependence of the connectors’ load-bearing behaviour on the crack width, so that under combined loading, a similar influence is expected. In this paper, experimental investigations on composite dowels in transversely cracked concrete under systematically varied shear-tension loading combinations are presented. Hereby, predefined crack widths and patterns were considered using a special test rig. Finally, a design approach for concrete failure of composite dowels under shear-tension loading is proposed based on the test results.

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Integriertes Deckensystem für den Stahl‐ und Verbundbau

Cited by 7 publications

References 29 publications

Structural Damage Detection Technique of Secondary Building Components Using Piezoelectric Sensors

Structural Damage Detection Technique of Secondary Building Components Using Piezoelectric Sensors

Development of a Consistent Design Concept for Composite Dowels

Combined Shear-Tension Loading of Composite Dowels in Cracked Concrete—Experimental Investigations and Design

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