Impact Loading of a Reinforced Concrete Beam-to-Column Joint


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Title: Impact Loading of a Reinforced Concrete Beam-to-Column Joint

Author(s): Alan J. Watson and John E. lnkester

Publication: Special Publication

Volume: 73


Appears on pages(s): 143-164

Keywords: energy models; beams thods; (supports); columns (supports) ; impact strength; impact tests; joints; static loads; strains. (junctions);

Date: 3/1/1982

The paper describes the behavior of a 1/8th scale model reinforced concrete beam to column joint under an impact load applied to the beam. The load is produced by a 1.68kg steel rod fired from an air gun with an impact velocity of either 8.9 m/s or 13.4 m/s. The column reactions were measured by foil electrical resistance strain gauges on 3 load cells. Similar strain gages gave the incident and reflected stress pulse from which the impact load on the beam has been obtained. The deflections of the beam during the impact were recorded using moving coil linear displacement transducers. The measured behaviour of the joint under impact load has been compared with that of identical specimens under static load and with calculated values.