A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Dynamic testing of as-built clay brick unreinforced masonry parapets
Highlights Shake-table tests of 13 URM parapets having different parapet height and mortar mix. Analysis of the crack-pattern and comparison with post-earthquake observations. Identification of the peak table acceleration at both initial cracking and rocking. Analysis of the free-rocking oscillation and estimation of the rocking period. Estimation of the effective PGA causing parapet failure in multi-storey buildings.
Abstract Unreinforced masonry (URM) parapets are free-standing components located above the perimeter walls of URM buildings and pose a significant falling hazard that has resulted in numerous injuries and costly repairs in recent earthquakes around the world. When subjected to earthquake-induced loads, as-built URM parapets are prone to horizontal cracking at the roof level followed by the initiation of rocking, which leads to cantilever-type out-of-plane failure. In response to these observations, the earthquake performance of 13 full-scale solid clay brick URM parapets when subjected to out-of-plane dynamic loading was experimentally investigated using a shake-table. To mimic in-situ conditions for the most commonly encountered configurations, recycled solid clay bricks and a variety of mortar mixes were used for the tested parapets. Two-leaf-thick (230mm) and 1200mm wide parapets with height ranging between 720mm and 1605mm were tested. Valuable experimental data was attained to assess the dynamic response of as-built URM parapets, and the results were compared with the assessment procedures available in the literature and current guidelines for practice.
Dynamic testing of as-built clay brick unreinforced masonry parapets
Highlights Shake-table tests of 13 URM parapets having different parapet height and mortar mix. Analysis of the crack-pattern and comparison with post-earthquake observations. Identification of the peak table acceleration at both initial cracking and rocking. Analysis of the free-rocking oscillation and estimation of the rocking period. Estimation of the effective PGA causing parapet failure in multi-storey buildings.
Abstract Unreinforced masonry (URM) parapets are free-standing components located above the perimeter walls of URM buildings and pose a significant falling hazard that has resulted in numerous injuries and costly repairs in recent earthquakes around the world. When subjected to earthquake-induced loads, as-built URM parapets are prone to horizontal cracking at the roof level followed by the initiation of rocking, which leads to cantilever-type out-of-plane failure. In response to these observations, the earthquake performance of 13 full-scale solid clay brick URM parapets when subjected to out-of-plane dynamic loading was experimentally investigated using a shake-table. To mimic in-situ conditions for the most commonly encountered configurations, recycled solid clay bricks and a variety of mortar mixes were used for the tested parapets. Two-leaf-thick (230mm) and 1200mm wide parapets with height ranging between 720mm and 1605mm were tested. Valuable experimental data was attained to assess the dynamic response of as-built URM parapets, and the results were compared with the assessment procedures available in the literature and current guidelines for practice.
Dynamic testing of as-built clay brick unreinforced masonry parapets
Giaretton, Marta (author) / Dizhur, Dmytro (author) / Ingham, Jason M. (author)
Engineering Structures ; 127 ; 676-685
2016-09-12
10 pages
Article (Journal)
Electronic Resource
English
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