A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Shear Capacity of High Strength Prestressed Concrete Girders
Recent studies have shown that it is commercially feasible to produce prestressed concrete girders utilizing concrete strengths in the 12,000 psi range. However, current codes and specification provisions for important structural parameters such as shear strength are largely empirical and are based on tests using concrete strengths less than 6000 psi. The program was undertaken to evaluate the adequacy of current design provisions for shear capacity when applied to high strength concrete girders. The report summarizes the results of the shear testing of ten pretensioned girder specimens made from concrete with compressive strengths ranging from 10,800 psi to 13,160 psi. Both monolithically cast slabs of high strength concrete and compositely cast slabs of 3300 psi and 5350 psi concrete were utilized. The design methods are acceptable for concrete strengths ranging to at least 12,000 psi. All three design procedures showed little change in conservatism as a function of concrete strengths. The tests indicated that the current maximum shear reinforcement limits could be substantially increased.
Shear Capacity of High Strength Prestressed Concrete Girders
Recent studies have shown that it is commercially feasible to produce prestressed concrete girders utilizing concrete strengths in the 12,000 psi range. However, current codes and specification provisions for important structural parameters such as shear strength are largely empirical and are based on tests using concrete strengths less than 6000 psi. The program was undertaken to evaluate the adequacy of current design provisions for shear capacity when applied to high strength concrete girders. The report summarizes the results of the shear testing of ten pretensioned girder specimens made from concrete with compressive strengths ranging from 10,800 psi to 13,160 psi. Both monolithically cast slabs of high strength concrete and compositely cast slabs of 3300 psi and 5350 psi concrete were utilized. The design methods are acceptable for concrete strengths ranging to at least 12,000 psi. All three design procedures showed little change in conservatism as a function of concrete strengths. The tests indicated that the current maximum shear reinforcement limits could be substantially increased.
Shear Capacity of High Strength Prestressed Concrete Girders
D. L. Hartmann (author) / J. E. Breen (author) / M. E. Kreger (author)
1988
271 pages
Report
No indication
English
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