A STUDY OF DYNAMICALLY LOADED COMPOSITE MEMBERS
Abstract
A study was made to extend the basic information on the behavior of concrete beams reinforced with steel plates and loaded both statically and dynamically at their center lines. The test beams had a steel plate either on the bottom serving as tensile reinforcement or on the top serving as compression reinforcement. Steel studs welded to the plate were used to transfer the shear at the concrete-steel interface. Stud behavior was determined from special push- out tests loaded both statically and dynamically. Comparisons of behavior as obtained from bean and push-out tests were made. The principal variables studied were stud diameter, concrete strength, number of studs per shear span, and type of load. Dynamic loads were obtained by dropping a mass onto a cushioning material resting on the specimen which provided load pulses with two positive slopes. An initial rise time of 3 to 9 milliseconds and a total duration up to 120 milliseconds, and loads up to 80 kips were obtained, The results of this study indicate that beams loaded dynamically have approximately a 50 percent greater flexural resistance than companion beams loaded statically. The results from dynamic push-out tests and beam tests with web reinforcement compared favorably.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1964
- Accession Number
- AD0444111
Entities
People
- Ervin S. Perry
- J. Neils Thompson
- Ned H. Burns
Organizations
- University of Texas at Austin