State of the art report on stub girder flooring systems

2021 ◽  
pp. 136943322199248
Author(s):  
Reza Masoudina
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Composite Structures ◽  
State Of The Art ◽  
Concrete Slab ◽  
Continuous Steel ◽  
Steel Beam ◽  
Steel Buildings ◽  
Reinforced Concrete Slab ◽  
Timber Construction

Stub girder flooring systems are a widely used system in modern steel buildings. This type of system is a composite flooring system consisting of a continuous steel beam and a reinforced concrete slab set apart by a series of short, and usually wide, flange parts known as stubs. While many studies and research have been conducted on this system in steel-concrete composite structures, comparable comprehensive research has not been done on Stub girder flooring system for timber construction. This study represents a review on stub girders, and focuses on experimental and analytical works in the area. Finally, pervious researches and experimental data about stub girder flooring system have been collected and summarized in a table format which has been listed parameters in the researches.

scholarly journals Operation of a steel-concrete composite beam considering slab cracking

2014 ◽  
Vol 13 (2) ◽  
pp. 265-274
Author(s):  
Marek Łagoda ◽  
Krzysztof Śledziewski
Keyword(s):  
Reinforced Concrete ◽  
Composite Beam ◽  
Composite Structures ◽  
Current Practice ◽  
Concrete Slab ◽  
Experimental Studies ◽  
The State ◽  
Reinforced Concrete Slab ◽  
Continuous Beams ◽  
Indeterminate Structures

The theme of the paper is the effect of scratching of reinforced concrete slab on the work of a steel-concrete composite beam. The paper evaluates the state of knowledge in the field of composite structures, in particular, statically indeterminate structures with concrete in tension zones. Additionally, in a nutshell, it describes the current practice of design. Moreover, experimental studies were described on continuous beams that were made by the authors. A proposal for further work on this topic was also presented.

scholarly journals Numerical Modelling of One-Way Reinforced Concrete Slab in FireTaking Into Account of Spalling

2021 ◽  
Vol 7 (3) ◽  
pp. 477-487
Author(s):  
Guergah Cherif ◽  
Dimia Mohamed Salah ◽  
Benmarce Abdelaziz
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Mechanical Response ◽  
Concrete Slab ◽  
Fire Exposure ◽  
Reinforced Concrete Slab ◽  
Element Analysis ◽  
Finite Element Software ◽  
Rc Slabs

This paper presents a study of the behaviour of Reinforced Concrete (RC) slabs subjected to severe hydrocarbon fire exposure. In which the spalling phenomena of concrete is to be considered. The hydrocarbon curve is applicable where small petroleum fires might occur, i.e. car fuel tanks, petrol or oil tankers, certain petro-chemical facilities, tunnels, parking structures, etc. Spalling is included using a simplified approach where elements with temperatures higher than 400 °C are assumed to occur and the corresponding thermo-mechanical response of RC slabs is evaluated. The nonlinear finite element software SAFIR has been used to perform a numerical analysis of the spalling risk, by removing layers of concrete covering when a set of spalling criteria is checked. The numerical results obtained by finite element analysis of the temperature distribution within the slab and mid-span deflection were compared with published experimental data. Predictions from the numerical model show a good agreement with the experimental data throughout the entire fire exposure to the hydrocarbon fire. This shows that this approach (layering procedure) is very useful in predicting the behaviour of concrete spalling cases. Doi: 10.28991/cej-2021-03091667 Full Text: PDF

Dimension and Frequency Profiles of Concrete Highway Bridges in New Madrid Region of Southeastern Missouri

1997 ◽  
Vol 1594 (1) ◽  
pp. 84-93 ◽  
Author(s):  
Ralph Alan Dusseau
Keyword(s):  
Reinforced Concrete ◽  
Concrete Slab ◽  
Highway Bridges ◽  
Ambient Vibration ◽  
Earthquake Hazards ◽  
Empirical Formulas ◽  
Reinforced Concrete Slab ◽  
Box Girder ◽  
Bridge Spans ◽  
New Madrid

The results of a study funded by the U.S. Geological Survey as part of the National Earthquake Hazards Reduction Program are presented. The first objective of this study was the development of a database for all 211 highway bridges along I-55 in the New Madrid region of southeastern Missouri. Profiles for five key dimension parameters (which are stored in the database) were developed, and the results for concrete highway bridges are presented. The second objective was to perform field ambient vibration analyses on 25 typical highway bridge spans along the I-55 corridor to determine the fundamental vertical and lateral frequencies of the bridge spans measured. These 25 spans included six reinforced concrete slab spans and two reinforced concrete box-girder spans. The third objective was to use these bridge frequency results in conjunction with the dimension parameters stored in the database to develop empirical formulas for estimating bridge fundamental natural frequencies. These formulas were applied to all 211 Interstate highway bridges in southeastern Missouri. Profiles for both fundamental vertical and lateral frequencies were then developed, and the results for concrete highway bridges are presented.

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