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A Study on the Modified Simple Truss Model to Predict the Punching Shear Strength of PSC Deck Slabs
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 Title & Authors
A Study on the Modified Simple Truss Model to Predict the Punching Shear Strength of PSC Deck Slabs
Park, Woo Jin; Hwang, Hoon Hee;
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 Abstract
In this paper, the simple truss model was modified to predict the punching shear strength of long-span prestressed concrete (PSC) deck slabs under wheel load including the effects of transverse prestressing and long span length between girders. The strength of the compressive zone arounding punching cone was evaluated by the stiffness of inclined strut which was modified by considering aging effective modulus. The stiffness of springs which control lateral displacement of the roller supports consists of the steel reinforcement and prestressing which passed through the punching cone. Initial angle of struts was determined by the experimental observation to compensate for uncertainties in the complexities of the punching shear. The validity of computed punching shear strength by modified simple truss model was shown by comparing with experimental results and the experimental results were also compared with existing punching shear equations to determine level of predictability. The modified simple truss model appeared to better predict the punching shear strength of PSC deck slabs than other available equations. The punching shear strength, which was determined by snap-through critical load of modified simple truss model, can be used effectively to examine punching shear strength of long span PSC deck slabs.
 Keywords
modified simple truss model;punching shear;prestressed deck slab;arching action;
 Language
Korean
 Cited by
 References
1.
A. K. Azad, M. H. Baluch, M. S. A. Abbasi and K. Kareem, "Punching Capacity of Deck Slabs in Girder-Slab Bridges", ACI Structural Journal, Vol. 91, No. 6, pp. 656-662, 1994.

2.
S. Marshe and F. G. Mark, "Punching Behavior of Composite Bridge Decks Transversely Prestressed with Carbon Fibre Reinforced Polymer Tendons", Canadian Journal of Civil Engineering, Vol. 26, pp. 618-630, 1999. crossref(new window)

3.
O. S. Khanna, A. A. Mufti and B. Bakht, "Experimental Investigation of the Role of Reinforcement in the Strength of Concrete Deck Slabs", Canadian Journal of Civil Engineering, Vol. 27, pp. 475-480, 2000. crossref(new window)

4.
J. C. Graddy, J. B. Kim, J. H. Whitt, N. H. Burns and R. E. Klingner, "Punching Shear Behavior of Bridge Decks under Fatigue Loading", ACI Structural Journal, Vol. 99, No. 3, pp. 257-266, 2002.

5.
Matzui, "Technical Development of Deck Slabs - improvement of Durability, Construction Simplication", Bridge and Foundation, Vol. 31, No. 8, pp. 84-94, 1997.

6.
M. F. Petrou and P. C. Perdikaris, "Punching shear failure in Concrete Decks as Snap-through Instability", Journal of Structural Engineering, Vol. 122, No. 9, pp. 998-1005, 1996. crossref(new window)

7.
H. H. Hwang and Y. W. Lee, "Punching Shear Strength in RC Slabs as Snap-through Model", Journal of the Korean Society of Civil Engineers, Vol. 24, No. 5, pp. 551-555, 2004.

8.
Y. W. Lee and H. H. Hwang, "Punching Shear Strength of RC Slabs by Simple Truss Model", Journal of the Korean Society of Civil Engineers, Vol. 28, No. 2, pp. 187-196, 2008.

9.
M. P. Collins and D. Mitchell, "Prestressed Concrete Structure", Prentice Hall, pp. 67-72, 1991.

10.
H. H. Hwang, C. B. Joh, B. S. Kim and Y. W. Lee, "Static Behavior of CIP PSC Deck Slabs for Composite Two-Girder Bridges", Journal of the Korean Society of Civil Engineers, Vol. 27, No. 3, pp. 291-302, 2007.

11.
W. J. Park and H. H. Hwang, "Minimum Thickness of Long Span RC Deck Slabs for Composite 2-girder Bridges Designed by KL-510 Load Model", Journal of the Korean Society of Safety, Vol. 29, No. 3, pp. 72-78, 2014. crossref(new window)