Deformation and Failure of a Monolithic Reinforced Concrete Frame under Accidental Actions

Abstract

Abstract The results of experimental and theoretical studies of deformation and failure of monolithic reinforced concrete (RC) frames under accidental action caused by the sudden removal of one of the columns are suggested. Experimental studies have been conducted on the model of structures of RC frames designed from fine-grained concrete class B40 with reinforcement class A500. Loading of experimental structures of frames was realized by gravitational method using a specially designed lever loading device. Accidental actions in the form of sudden removal of the сentral columns of the frame were modeled using a special designed device in the form of switch-off columns. The calculation of the experimental frame structures is executed on by an analytical method on an energy basis using level calculation schemes. Comparison of the calculation results with the test data on the parameters of deformation of structural elements and strength criteria of frames under the considered actions showed their satisfactory agreement.