Shear Strengthening Using Cfrp Sheets for a Prestressed Concrete Highway Bridge in Manitoba, Canada
نویسندگان
چکیده
The use of heavier trucks demanded upgrading of a twenty-seven year old bridge in Winnipeg, Manitoba, Canada. Analysis of the precast prestressed concrete girders using the current AASHTO Code indicates a deficiency in the shear capacity. Shear strengthening using Carbon Fibre Reinforced Polymer (CFRP) sheets provides a low-cost solution by increasing the speed of construction and reducing traffic interruption when compared with conventional methods. Due to a lack of information on the use of CFRP sheets for shear strengthening of I-shaped concrete AASHTO girders, an experimental program has been undertaken at the University of Manitoba. Four ten meter long scale model prestressed concrete girders have been tested to failure at both ends, using six configurations for three types of CFRP. The contribution of the CFRP sheets to the enhanced shear capacity of the girder has been evaluated as well as the effect of the various parameters studied on the shear behaviour of the girder. This paper presents preliminary conclusions and recommendations for the use of this strengthening technique on this particular girder shape.
منابع مشابه
Shear Strengthening Using Frp Sheets for a Idghw a Y Bridge in Manitoba, Canada
The use of heavier trucks demanded upgrading of a twenty-seven year old bridge in Winnipeg, Manitoba, Canada. Analysis of the precast prestressed concrete girders using the current AASHTO Code indicates a deficiency in the shear capacity. Shear strengthening using Carbon Fibre R_einforced Polymer (CFRP) sheets provides a low-cost solution by increasing the speed of construction and reducing tra...
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