Shaking table testing of as-built and retrofitted clay brick URM cavity-walls

摘要: Abstract Masonry cavity-wall construction incorporates a continuous air gap that separates the inner and outer brick leaves of wall cross-section. This configuration was originally developed because improved thermal performance in particular reduced moisture transmission across wall, as presence air-cavity serves to capture drain back building exterior. However, it subsequently established clay-brick unreinforced masonry (URM) buildings typically exhibit poor seismic due inadequate connections between separate Experimental shaking table testing five cavity-walls undertaken with an emphasis on developing experimentally validating simple efficient retrofit solutions improve capacity. Wall specimens closely simulated in-situ conditions for URM arrangements are most commonly encountered New Zealand. Two different were tested, namely, addition mechanical screw-ties spacings or combination timber strong-backs. Specimen details, procedures, test set-up results presented herein. Reported include observed crack-patterns, peak ground acceleration (PGA) corresponding both induced initial cracking failure, displacement profiles at quantification improvement capacity from using proposed techniques.