Author(s)

C. Cuadra, J. Ogawa

Abstract

Experimental errors in pseudodynamic test using conventional testing devices C. Cuadra, J. Ogawa Department of Architecture and Environmental Engineering, Akita Prefectural University, Japan Abstract The pseudodynamic test technique, used to simulate the seismic behavior of structural elements, usually has been related to the use of actuators controlled by servo valves. However, recently, new hardware devices have been developed like a hydraulic pump system that can adjust the rate of oil flow by using an inverter motor and a high-speed on-off valve. This equipment permit to use conventional hydraulic jacks by controlling their movements by means of external signal obtained from displacement transducers. In this report an analysis of the experimental errors, occurred during the test using this new implementation of the pseudodynamic technique, is presented. It is shown that an appropriate implementation of the control program can reduce the undershooting errors. Some res

Keywords