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Title: Experimental Investigation on a Precast Bridge Deck Panel System

Author(s): Zhengyu Liu, Brent M. Phares, Seyedamin Mousavi, Katelyn S. Freeseman

Publication: Structural Journal



Appears on pages(s):

Keywords: double panel overhang; laboratory test; precast deck panel; prestressed half-depth deck

DOI: 10.14359/51738504

Date: 1/16/2023

Precast concrete deck panels have been used in the United States for more than half a century. As the precast technique improved and the truck delivery capacity increased, the use of precast deck panels gained increased popularity nationwide since it significantly accelerates bridge construction and reduces the onsite labor cost. This paper aims to evaluate the performance of a new precast deck panel system consisting of the double panel exterior overhang and the partial-depth prestressed interior deck in laboratory conditions. In order to achieve the objective, the design concept of the new deck panel system was presented, and two specimens, each consisting of two exterior double panel overhangs and two prestressed interior deck panels, were fabricated and tested subject to the lateral and horizontal static load, respectively. The results were compared with AASHTO design loading and the test results from similar previous research. The horizontal loading test results indicated that the ultimate negative bending moment of the precast deck overhang is about 91.6 KN-m/m (20.6 kips-in./in.), which is nearly three times that of the AASHTO design moment. The vertical loading test results indicated that both types of panels reached ultimate capacity when a point load reached between 1,068 KN (240 kips) and 1,112 KN (250 kips), leading to a punching shear failure. This value is significantly larger than the wheel load, 71 KN (16 kips) of AASHTO HL93 design loading. The results also indicated that the prestressed panel shows superior performance to the non-prestressed panel when it is subject to vertical loading. It resists cracking at the lower load level and significantly reduces the vertical deflection when it is subject to vertical load.


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