A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Basic Concepts
Abstract Most concrete construction in the world is cast-in-place reinforced concrete. In reinforced concrete structures, steel reinforcement is placed into the concrete to provide the tensile resistance to flexural loads or to assist the concrete in carrying compressive loads. While a superb building material, reinforced concrete must crack before the steel can significantly contribute to the strength and stiffness. This behavior led engineers to develop prestressed concrete, which uses high-strength steel tendons that are stretched to apply a compensating compressive load to the concrete prior to the application of the service loads. The prestressing force creates a compressive stress in the concrete to counteract the tensile stresses induced by the service loads. While this prestressing force does not result in an intrinsically higher member strength than reinforced concrete, it does delay cracking so that the service loads are carried primarily by uncracked concrete. This allows for the use of longer spans without increasing the member depth, or shallower members for the same span as can be designed with reinforced concrete.
Basic Concepts
Abstract Most concrete construction in the world is cast-in-place reinforced concrete. In reinforced concrete structures, steel reinforcement is placed into the concrete to provide the tensile resistance to flexural loads or to assist the concrete in carrying compressive loads. While a superb building material, reinforced concrete must crack before the steel can significantly contribute to the strength and stiffness. This behavior led engineers to develop prestressed concrete, which uses high-strength steel tendons that are stretched to apply a compensating compressive load to the concrete prior to the application of the service loads. The prestressing force creates a compressive stress in the concrete to counteract the tensile stresses induced by the service loads. While this prestressing force does not result in an intrinsically higher member strength than reinforced concrete, it does delay cracking so that the service loads are carried primarily by uncracked concrete. This allows for the use of longer spans without increasing the member depth, or shallower members for the same span as can be designed with reinforced concrete.
Basic Concepts
Dolan, Charles W. (author) / Hamilton, H. R. (Trey) (author)
Prestressed Concrete ; 1-30
2018-11-15
30 pages
Article/Chapter (Book)
Electronic Resource
English
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