A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Field Testing a Reinforced Concrete Highway Bridge
A three span (20 ft -25 ft -20 ft) reinforced concrete slab bridge was loaded to its collapse load. The slab was 32 ft wide and 12 in thick, however, there was a 2 ft -10 in wide by 10 in thick curb cast on each edge of the slab. Loading consisted of a line load across the midspan. This loading was produced by hydraulic rams which were reacted by overhead steel beams that were attached to the piers with tension rods through the slab. The load was increased by intervals until collapse. At each load interval measurements were made on deflection and strains on the concrete surface. Strength of the concrete and steel materials were in excess of the design minimum values with an average 6865 psi cylinder strength compared to a design value of 3000 psi and an average steel coupon yield strength of 53,050 psi compared to a design value of 40,000 psi.
Field Testing a Reinforced Concrete Highway Bridge
A three span (20 ft -25 ft -20 ft) reinforced concrete slab bridge was loaded to its collapse load. The slab was 32 ft wide and 12 in thick, however, there was a 2 ft -10 in wide by 10 in thick curb cast on each edge of the slab. Loading consisted of a line load across the midspan. This loading was produced by hydraulic rams which were reacted by overhead steel beams that were attached to the piers with tension rods through the slab. The load was increased by intervals until collapse. At each load interval measurements were made on deflection and strains on the concrete surface. Strength of the concrete and steel materials were in excess of the design minimum values with an average 6865 psi cylinder strength compared to a design value of 3000 psi and an average steel coupon yield strength of 53,050 psi compared to a design value of 40,000 psi.
Field Testing a Reinforced Concrete Highway Bridge
J. J. Jorgenson (author) / W. Larson (author)
1974
56 pages
Report
No indication
English
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