Seismic Performance of Enclosure Wall in Postearthquake Temporary Prefabricated Light-Weight Steel Structure

Abstract

For the postearthquake temporary prefabricated light-weight steel structure, the enclosure walls composed of prefabricated slendercolumnsandprefabricatedstripslabswereusedinthestructure,whichweremanufacturedfromconstructionwaste,such as fragments of bricks and tiles, concrete fragments, and chippings of stones. In order to obtain more accurate seismic performance of enclosure walls, a full-scale two-story experimental model was built to be placed on a shake table. In the test, accelerationtransducerswerefixedtotheenclosurewallsandsteelframe,whichwereusedtoobtainthemaximumaccelerationof theenclosurewallsandsteelframeaswellasnaturalfrequencyoftheexperimentalmodelsubjectedtotheseismicsignalincluding Kobe wave and El-Centro wave. Moreover, pull-on the rope displacement transducers fixed to the exterior walls parallel to the direction of vibration were used to obtain the story drifts. The results of the shake table test show that when the experimental model is subjected to earthquake with maximum acceleration, enclosure walls are not damaged, owing to flexible connection betweenthesteelframeandenclosurewalls.Earthquakereducesthestiffnessofenclosurewalls,andthenaturalfrequencyofthe experimentalmodeldecreaseswithincreasingmaximumaccelerationoftheseismicsignal.Inaddition,basedontheacceleration amplification coefficient, the collaborative performance of the steel frame and enclosure wall is better. Besides, when the experimental model is subjected to earthquake with maximum acceleration, the maximum story drift angle is only 1/2615.