Mechanical behavior of steel-concrete composite decks with perfobond shear connectors

다국어 초록 (Multilingual Abstract)

Exodermic deck systems are new composite steel grid deck systems which have been used in various projects during the past decade. One of the eminent features of this system is considerable reduction in the structure weight compared to the ordinary reinforced concrete decks and also reduction in construction time by using precast Exodermic decks. In this study, dynamic properties of the Exodermic deck bridges with alternative perfobond shear connectors are investigated experimentally. In order to evaluate the dynamic properties of the decks, peak picking and Nyquist circle fit methods are employed. Frequencies obtained experimentally are in good agreement with the results of the finite-element solution, and the experimental results show that the first mode is the most effective mode among the obtained modes. The first four modes are the rigid translational motion modes, and the next two modes seem to be rigid rotational motion modes around a horizontal axis. From the 7th mode onwards, modes are flexible. The range of damping ratios is about 0.5%. Furthermore, the static behavior of the Exodermic decks under a static load applied at the center of the decks was investigated. Failure of the decks under positive bending was punching-shear. The bending strength of the decks under negative bending was about 50 percent of their strength under positive bending. In addition, the weight of an Exodermic deck is about 40% of that of an equivalent reinforced concrete slab.

참고문헌 (Reference)

1 Kim, H.Y., "Ultimate strength of a steel-concrete composite bridge deck slab with profiled sheeting" 32 (32): 534-546, 2010

2 Selçuk Emre Görkem, "Ultimate behavior of composite beams with shallow I-sections" 국제구조공학회 14 (14): 493-509, 2013

3 Kim, H.Y., "Steel-concrete composite bridge deck slab with profiled sheeting" 65 (65): 1751-1762, 2009

4 Nishimura, A., "Shear connector utilizing the reinforcing steels in composite girder slab" Japan Society for the Promotion of Science 1971

5 Zellner, W., "Recent designs of composite bridges and a new type of shear connectors" 1987

6 Josef Machacek, "Perforated shear connectors" 국제구조공학회 2 (2): 51-66, 2002

7 Oguejiofor, E.C., "Parametric study of perfobond rib shear connectors" 21 (21): 614-625, 1994

8 Oguejiofor, E.C., "Numerical analysis of push-out specimens with Perfobond rib connectors" 62 (62): 617-624, 1996

9 Leonhardt, E.F., "New improved shear connector with high fatigue strength for composite structures" 12 : 325-331, 1987

10 He, J., "Modal Analysis" Butterworth-Heinemann 2001

11 Kim, S.H., "Experimental study on shear connection in unfilled composite steel grid bridge deck" 66 (66): 1339-1344, 2010

12 Zhongming Hou, "Dynamic analysis and shear connector damage identification of steel-concrete composite beams" 국제구조공학회 13 (13): 327-341, 2012

13 Ciutina, A.L., "Cyclic performances of shear connectors" 2008

14 Velanda, M.R., "Behavior of perfobond rib shear connectors: Push-out tests" 19 (19): 1-10, 1992

15 Oguejiofor, E.C., "Behavior of perfobond rib shear connectors in composite beams: Full-size tests" 19 (19): 224-235, 1992

16 Higgins, C., "Behavior of composite bridge decks with alternative shear connectors" 6 (6): 17-22, 2001

17 The D.S Brown Company, "An Introduction to: Exodermic™ Bridge Decks"

18 "ASTM C33, Standard Specification for Concrete Aggregates"

19 "ACI 318, Building Code Requirements for Structural Concrete and Commentary"