Accession Number : ADP001762

Title :   The Response of Reinforced Concrete Structures under Impulsive Loading,

Corporate Author : WEIDLINGER ASSOCIATES MENLO PARK CA

Personal Author(s) : Millavec,William A. ; Isenberg,Jeremy

Report Date : MAY 1983

Pagination or Media Count : 6

Abstract : A finite element method is presented to analyze the effects of airblast-induced ground shock on shallow-buried, flat-roofed, reinforced concrete structures. A finite element based on Timoshenko beam theory is adopted. Material properties are defined in terms of nonlinear stress-strain relations in each of several layers through the thickness of the element. Elastic, ideally plastic constitutive properties for plain concrete are cast in terms of shear-stress/normal-stress variables. Elastic, strain-hardening constitutive properties are assumed for steel. Dynamic explicit and implicit and static solution algorithms are available. This analysis method is applied to simulation of static beam-column tests reported by ACI Committee 318-77. It is then applied to simulation of structural response of experimentally tested shallow-buried box structures subjected to airblast loads in which shear, flexure and combined shear-flexure damage was observed. (Author)

Descriptors :   *Weapons effects, *Explosion effects, *Ground shock, *Reinforced concrete, *Structural response, *Impulse loading, Structures, Buried objects, Shallow depth, Finite element analysis, Simulation, Flexural properties, Stress strain relations, Thickness, Algorithms, Theory, Timoshenko beam, Blast waves, Shear properties, Conferencing(Communications), Symposia

Distribution Statement : APPROVED FOR PUBLIC RELEASE