Earthquake Simulation Tests of a Ten-Story Reinforced Concrete Frame with a Discontinued First-Level Beam

摘要

A small-scale, ten-story, reinforced concrete frame structure withrelatively flexible lower stories was subjected successively to simulatedearthquakes of increasing intensity on the University of Illinois EarthquakeSimulator. The test structure comprised two frames situated opposite oneanother with strong axes parallel to a horizontal base motion and with story-masses spanning between. The frames had relatively "tall" first and laststories and a discontinued first floor-level, exterior-span beam. Earthquakesimulation tests were complemented by free-vibration tests and steady-statesinusoidal tests at a series of frequencies bounding the apparent fundamentalfrequency. This report docuents the experimental work, presents data(including time-response histories), and discusses the observed dynamic responsein relation to stiffness, strength, and energy-dissipative capacity.