Establishment of strong motion instrumentation program and shake table test on reinforced concrete bridge column
Abstract
The Earthquake Engineering Center (EEC), NWFP University of Engineering and Technology, Peshawar, is working on the establishment of Strong Motion Instrumentation Program (PkSMIP). The project is being sponsored by the Higher Education Commission (HEC) of Pakistan with an estimated cost of Rs. 35 million. In this project strong motion sensors will be installed on ground, bridges and buildings across various regions to record ground motion and response of structures during earthquakes. The recorded ground motion and the response of the structure will be shared with researchers in earth sciences and structural engineering, for updating the seismic codes for bridges and buildings of Pakistan. This paper presents various aspects for successful installation, maintenance and data recording by sensors for which California Geological Survey (CGS) also provided technical assistance. Various aspects are discussed, such as, optimal cost, selection of site, security, maintenance, identification of installation points on structure as well in free field. The first author as part of his PhD studies gathered field data of bridges in northern part of NWFP and Kashmir and conducted the first shake table test on bridge columns. Various important aspects for conducting shake table tests on scaled models are presented. The tests conducted showed that valuable information regarding seismic performance of structures can be obtained through shake table tests, which can be used for improving seismic performance of such structures and for updating seismic design codes to ensure safer designs.
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