scholarly journals Influencing Parameters on the Load‐bearing Capacity of Composite Dowels positioned close to the free Surface of Concrete Slabs

ce/papers ◽  
2019 ◽  
Vol 3 (3-4) ◽  
pp. 295-300
Author(s):  
Yannick Broschart ◽  
Wolfgang Kurz ◽  
Kevin Wolters ◽  
Georgios Christou ◽  
Martin Claßen
Keyword(s):  
Free Surface ◽  
Bearing Capacity ◽  
Concrete Slabs ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Influencing Parameters

scholarly journals A concrete prefabricated slab as a technology for reconstructing damaged, local air-field pavements

2018 ◽  
Vol 2018 (12) ◽  
pp. 51-64
Author(s):  
Mariusz Wesołowski ◽  
Bartosz Świerzewski
Keyword(s):  
Bearing Capacity ◽  
Field Tests ◽  
Working Life ◽  
Concrete Slabs ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
The Real ◽  
International Airport ◽  
Fast Reconstruction

The age of currently operated concrete airfield pavements in Poland exceeds 30 years opera-tion period many times. Such a long working life of airfield pavements forced to search for the efficient and fast technologies of their reconstruction. The article described in detail the technologies of fast reconstruction of airfield concrete slabs using prefabricated slabs. The addressed technology guarantees the reconstruction and even the improvement of the condi-tion of load-bearing capacity of mentioned airfield slabs which was confirmed during labora-tory tests, field tests and practically verified in the real operation in the International Airport Kraków-Balice.

scholarly journals Reconstructing the Load-Bearing Capacity of Deteriorated, Concrete Airfield Pavements Using Prefabricated Slabs

2018 ◽  
Vol 41 (1) ◽  
pp. 31-61
Author(s):  
Mariusz Wesołowski ◽  
Agata Kowalewska ◽  
Bartosz Świerzewski
Keyword(s):  
Bearing Capacity ◽  
Laboratory Tests ◽  
Field Tests ◽  
Working Life ◽  
Concrete Slabs ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Operation Period ◽  
Fast Reconstruction ◽  
Loadbearing Capacity

Abstract The age of currently operated concrete airfield pavements in Poland exceeds 30 years operation period many times. Such a long working life of airfield pavements forced to search for the efficient and fast technologies of their reconstruction. The article described in detail the technologies of fast reconstruction of airfield concrete slabs using prefabricated slabs. The addressed technology guarantees the reconstruction and even the improvement of the condition of loadbearing capacity of mentioned airfield slabs which was confirmed during laboratory tests, field tests and practically verified in the real operation in the International Airport Kraków-Balice.

scholarly journals An Analysis of the Load-Bearing Capacity of Timber-Concrete Composite Beams with Profiled Sheeting

2017 ◽  
Vol 27 (4) ◽  
pp. 143-156 ◽  
Author(s):  
Maciej Szumigała ◽  
Ewa Szumigała ◽  
Łukasz Polus
Keyword(s):  
Numerical Analysis ◽  
Bearing Capacity ◽  
Concrete Slab ◽  
Composite Beams ◽  
Concrete Slabs ◽  
Timber Beam ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Shear Connectors ◽  
Timber Beams

Abstract This paper presents an analysis of timber-concrete composite beams. Said composite beams consist of rectangular timber beams and concrete slabs poured into the steel sheeting. The concrete slab is connected with the timber beam using special shear connectors. The authors of this article are trying to patent these connectors. The article contains results from a numerical analysis. It is demonstrated that the type of steel sheeting used as a lost formwork has an influence on the load-bearing capacity and stiffness of the timber-concrete composite beams.

Einflussfaktoren auf das Tragverhalten randnaher Verbunddübelleisten/Influencing parameters on the load-bearing behaviour of composite dowels positioned close to the free surface of concrete slabs

Bauingenieur ◽  
2019 ◽  
Vol 94 (06) ◽  
pp. 199-205
Author(s):  
Yannick Broschart ◽  
Wolfgang Kurz ◽  
Kevin Wolters ◽  
Georgios Christou ◽  
Martin Claßen
Keyword(s):  
Free Surface ◽  
Concrete Slabs ◽  
Load Bearing ◽  
Influencing Parameters ◽  
Push Out

Zusammenfassung Verbunddübelleisten bieten im Stahlverbundbau eine wirtschaftliche Alternative zu klassischen Verbundmitteln wie Kopfbolzendübeln. Moderne Verbunddecken werden in zunehmendem Maße filigraner ausgeführt und darüber hinaus werden oftmals haustechnische Funktionen in das tragende Deckenbauteil integriert. Um die hierfür erforderlichen geringen Deckendicken zu realisieren, können Verbunddübelleisten horizontal innerhalb der Betonplatte positioniert werden, woraus ein geringer seitlicher Abstand zum freien Betonplattenrand resultiert. Bisherige Untersuchungen beschreiben unterschiedliche Versagensbilder von Konstruktionen mit Verbunddübelleisten, beispielsweise Spalten der Betonplatte, Ausstanzen eines Betonkegels oder Plastizieren der Stahlzähne. An der Technischen Universität Kaiserslautern wurden im Rahmen eines gemeinsamen Forschungsprojektes mit der RWTH Aachen Push-out-Versuche durchgeführt, anhand derer das Tragverhalten von Verbunddübelleisten mit randnahen Einbaupositionen untersucht wurde. Hierbei wurden bisher unbekannte Versagensmechanismen beobachtet, die durch bestehende Bemessungsansätze für Verbunddübelleisten mit konventionellen (randfernen) Einbaupositionen nicht abgedeckt sind. Im Rahmen dieses Aufsatzes werden die Einflüsse der Parameter Betonfestigkeit, Plattendicke und Bewehrungsführung auf das Trag- und Verformungsverhalten randnaher Verbunddübelleisten analysiert und eine mechanische Modellvorstellung zum Lastabtrag randnaher Leisten vorgestellt.

Narrow Reinforced Concrete Slabs after their Flexural Destruction

2014 ◽  
Vol 969 ◽  
pp. 271-275 ◽  
Author(s):  
Mirosław Wieczorek
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
The Self ◽  
Concrete Slabs ◽  
Building Structures ◽  
Reinforcing Steel ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Horizontal Shift ◽  
Reinforced Concrete Slabs

In the course of the exploitation of building structures frequently situations turn up, in which the structure is not adequately used (it may, for instance, be exposed to considerably greater loads than previously been intended). In the state of an unforeseen overload of the structure, essential reserves of their load-bearing capacity may be disclosed in the case of the self-acting work as a flexible strand. The paper presents the results of investigations concerning the influence of the parameters of reinforcing steel on the mechanism of the destruction of six single-span models of narrow reinforced concrete slabs, in which a horizontal shift of the supports was not possible. The tests were carried out on narrow slabs with the dimensions 3860×480×100 mm. The results of the tests were compared with analytical calculations.

TEXTILE SYNTHETIC SHEETS AND THEIR IMPACT ON THE LOAD BEARING CAPACITY OF CONCRETE-FILLED TEXTILE FLOOR-MATS

2017 ◽  
Vol 7 (3) ◽  
pp. 57-62
Author(s):  
Andrey A. MIKHASEK ◽  
Maxim V. RODIONOV ◽  
Margarita G. LITVINOVA
Keyword(s):  
Bearing Capacity ◽  
Laboratory Study ◽  
Concrete Slabs ◽  
Load Bearing Capacity ◽  
Load Bearing ◽  
Study Results ◽  
Mat Thickness ◽  
The Impact

The calculation of the strength of concrete slabs load bearing capacity does not take into account synthetic sheets impact while calculating concrete-fi lled textile fl oor-mats. Further studies are proposed to assess the impact of sheets in laboratory environments. The authors base their study on the properties of concrete-fi lled textile fl oor-mats as fl exible beams and on synthetic sheets impact on strength indicators. The paper presents a laboratory study results obtained under diff erent conditions of textile synthetic sheets impact on concrete-fi lled textile fl oor-mats load bearing capacity. It provides a function to determine a mat thickness from the condition of its strength.

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