Punching shear resistance of lightweight concrete offshore structures for the Arctic :

Abstract

The punching shear resistance of

Punching shear resistance of lightweight concrete offshore structures for the Arctic :

“…(2) The flexural and shear reinforcement ratios should be selected so that a punching shear failure will occur prior to a flexural failure in the specimens. Available literature on the design of Arctic offshore structures indicates that flexural reinforcement ratios range from 1.5 to 2.5 percent [10].…”

“…A previous experimental investigation on punching shear [1] Shear reinforcement -ratios as high as 1 percent have been suggested [10]. To study the contribution of shear reinforcement to punching shear resistance, three ratios of shear reinforcement were selected: 0, 0.22, and 0.44 percent.…”

“…A review of the literature on Arctic offshore structures [10] indicates that the ranges of typical thicknesses are on the order of 2 to 5 ft, with the larger thicknesses in flat plate ice walls.…”

“…The nominal shea r stress acting on the critical section was assumed to be llVf Prestressing values ranging from 300 to 1000 psi (2 to 7 MPa) [10] have been reported in the design of Arctic structures. The prestressing force, by creating a state of triaxial compression in the structures, is expected to have an effect on the failure load and the failure mechanism.…”