Serviceability limits of reinforced concrete hinges

Schlappal, Thomas; Kalliauer, Johannes; Vill, Markus; Gmainer, Susanne; Mang, Herbert A.; Eberhardsteiner, Josef; Pichler, Bernhard

doi:10.1016/j.engstruct.2019.109861

Cited by 8 publications

(41 citation statements)

References 22 publications

(46 reference statements)

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“…Herein, serviceability and ultimate limit states are defined as follows. The serviceability limit will be reached, if either the maximum stress of concrete reaches the compressive strength, or the steel of a bolt starts to yield, or the bending-induced separation of an unreinforced joint extends across more than half of the initial contact area putting the position stability of the interfaces at risk [11], or if two of these criteria are fulfilled simultaneously. The bearing capacity will be reached, if the structure develops a kinematic mechanism.…”

Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

“…As for integral bridge construction, analytical formulae for verification of serviceability and ultimate limits of reinforced concrete hinges were derived [11,12]. The serviceability limit states indicate that the maximum compressive normal stress of concrete has reached the triaxial compressive strength and/or that the steel rebars have started to yield.…”

Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

“…In "compression-dominated operation," the entire cross-section of the neck is subjected to compressive stresses. The mathematical formulation of the SLE reads as [11]…”

Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

“…In the operating condition "tensile macrocracking up to one half of the width of the neck," the reinforcement is subjected to compressive stresses. The mathematical formulation of the SLE reads [11] , Analysis of eccentric compression tests of reinforced concrete hinges: a identification of serviceability and ultimate limits [11,12]; b experimental data…”

Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

“…Recommendations for verification of serviceability and ultimate limit states of reinforced concrete hinges are the topic of the fourth example. An engineering-mechanics model was established to determine acceptable relative rotations as a function of the normal force transmitted across the neck [11,12]. The usefulness of corresponding dimensionless diagrams was checked by means of experimental data.…”

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confidence: 99%

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Application-oriented fundamental research on concrete and reinforced concrete structures: selected findings from an Austro-Chinese research project

et al. 2020

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In this paper, the significance of application-oriented fundamental research on concrete and reinforced concrete structures for progress regarding practical applications to structural design is addressed based on four examples. They were treated in a joint research project of Vienna University of Technology and Tongji University. The first topic refers to sudden heating or cooling of concrete structures, the second one to highdynamic strength of specimens made of cementitious materials, the third one to structural analysis of segmental tunnel rings used in mechanized tunneling, and the fourth one to serviceability and ultimate limit states of concrete hinges used in integral bridge construction. The first two topics deal with exceptional load cases. Results from the fundamental research call for improvements of state-of-the-art simulation approaches used in civil engineering design. The last two topics refer to reinforced concrete hinges used in mechanized tunneling and integral bridge construction, respectively. Integrative research has led to progress regarding the verification of serviceability and ultimate limit states. In all four examples, results from fundamental research are used to scrutinize state-of-the-art approaches used in practical structural design of civil engineering structures. This allows for identifying interesting directions for the future development of design guidelines and standards.

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Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

“…In "compression-dominated operation," the entire cross-section of the neck is subjected to compressive stresses. The mathematical formulation of the SLE reads as [11]…”

Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

Section: Results From Recent Fundamental Researchmentioning

confidence: 99%

mentioning

confidence: 99%

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Application-oriented fundamental research on concrete and reinforced concrete structures: selected findings from an Austro-Chinese research project

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Langzeitmessungen an einer vorgespannten integralen Rahmenbrücke mit bewehrten Betongelenken – Vergleich Messergebnisse mit numerischen Simulationen – eine Gegenüberstellung nach 8 Jahren Messdauer

Vill

Vospernig

Reiterer

et al. 2022

Beton und Stahlbetonbau

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Im Rahmen des durch die ÖBB‐Infrastruktur AG initiierten Forschungsprojekts im Zuge der Errichtung einer Straßenbrücke beim Neubau des Semmering‐Basistunnels in Österreich wurden umfangreiche Langzeitmessungen des tatsächlichen Bauwerksverhaltens ab Herstellung einer Brücke im Jahr 2014 durchgeführt. Bei der vorliegenden Brücke handelt es sich um eine integrale vorgespannte Rahmenbrücke mit Betongelenken. Bei der Errichtung der Brücke wurden zur Langzeitmessung der Verformungen, Verdrehungen, Temperaturänderungen und Erddruckspannungen unterschiedliche Messsensoren sowohl innerhalb der Betonquerschnitte vor Betonage als auch an der Oberfläche der Betontragstruktur installiert. Die Messungen laufen nun seit der Errichtung der Brücke im Jahr 2014 bzw. der Absenkung des Lehrgerüsts über einen Zeitraum von acht Jahren permanent und stellen damit eine umfassende Grundlage zur Gegenüberstellung von Messung, numerischer Simulation und ingenieurpraktischen Ansätzen auf der Einwirkungs‐ und Widerstandseite dar. Im vorliegenden Beitrag wird die Konstruktion der Brücke einschließlich Herstellungsmethode und Installation der Messtechnik beschrieben. Über den Zeitraum von acht Jahren werden die Messergebnisse in ihrer Gesamtheit sowie auch in einzelnen ausgewählten Detailmessperioden dargestellt und den rechnerisch ermittelten Werten gegenübergestellt. Weiterhin erfolgt auch eine Gegenüberstellung der Ergebnisse der numerischen Simulationen der Betongelenke mit den in situ gemessenen Verformungen und analytisch errechneten Beanspruchungen. Die Ergebnisse über den Messzeitraum zeigen ein sehr träges Temperaturverhalten und sehr geringe Verdrehungen an den Betongelenken. Des Weiteren sind anhand der Messergebnisse zeitabhängige Verformungen des Betons deutlich erkennbar.

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Large‐scale experiments on concrete hinges under general loading

Markić

Kaufmann

2022

Structural Concrete

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The structural behavior of concrete hinges under general loading is far from being properly understood, which is to a large extent due to the lack of pertinent experimental data. This paper contributes to filling this knowledge gap by presenting and discussing the results of an experimental campaign on one‐way Freyssinet concrete hinges. Seven large‐scale concrete hinges were tested in the Large Universal Shell Element Tester, which allowed the investigation of their behavior under general loading by all six stress resultants. A combination of digital image correlation and distributed fiber optic measurements allowed a deeper insight into the structural behavior of the specimens. The tested hinges could sustain very high axial stresses exceeding 4.5 times the uniaxial concrete compressive strength, large rotations of over 60 mrad, and shear stresses in transverse and longitudinal directions up to 2.24 times the axial compressive stress. The resistance to bending moments about the strong axis and torques also proved to be significant. A moderate amount of reinforcement crossing the hinge throat considerably increased the shear resistance at low axial stresses and produced a ductile shear behavior.

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Serviceability limits of reinforced concrete hinges

Cited by 8 publications

References 22 publications

Application-oriented fundamental research on concrete and reinforced concrete structures: selected findings from an Austro-Chinese research project

Application-oriented fundamental research on concrete and reinforced concrete structures: selected findings from an Austro-Chinese research project

Langzeitmessungen an einer vorgespannten integralen Rahmenbrücke mit bewehrten Betongelenken – Vergleich Messergebnisse mit numerischen Simulationen – eine Gegenüberstellung nach 8 Jahren Messdauer

Large‐scale experiments on concrete hinges under general loading

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