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 Seismic performance of an infilled moment-resisting steel frame during the 2016 Central Italy Earthquake
Tác giả hoặc Nhóm tác giả: Phan Hoang Nam, Fabrizio Paolacci, Phuong Hoa Hoang
Nơi đăng: The 3rd Int. Conf. on Transport Infrastructure & Sustainable Development (TISDIC 2019); Số: N/A;Từ->đến trang: N/A;Năm: 2019
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
A sequence of earthquakes occurred between the end of August 2016 and the end of October 2016 in Central Italy causing significant damage and major disruption in a wide area. The sequence of events is composed of five events with magnitude between Mw 5.5 to 6.5. As a consequence, numerous residential buildings in the affected area was not particularly resistant to the shaking, resulting in the collapse and heavy damage. With a particular focus on masonry infilled steel frames, this paper evaluates the seismic performance of an infilled moment-resisting steel frame located in Amatrice, Central Italy, which suffered significant damage during the August 2016 Central Italy earthquake. The aim is to investigate the effect of the masonry infill to the seismic performance of the building. The three-dimensional (3D) frame building is modeled using the Opensees software, where the beam and column elements are modeled by using a nonlinear hinge model and the infill is idealized as diagonal struts with nonlinear hysteretic behavior. Nonlinear static and dynamic analyses are performed for both bare and infill frames in order to assess the effect of the masonry infill on the overall seismic response and confirm the actual damage pattern surveyed in the aftermath of the 2016 Central Italy earthquake of the case study.
ABSTRACT
A sequence of earthquakes occurred between the end of August 2016 and the end of October 2016 in Central Italy causing significant damage and major disruption in a wide area. The sequence of events is composed of five events with magnitude between Mw 5.5 to 6.5. As a consequence, numerous residential buildings in the affected area was not particularly resistant to the shaking, resulting in the collapse and heavy damage. With a particular focus on masonry infilled steel frames, this paper evaluates the seismic performance of an infilled moment-resisting steel frame located in Amatrice, Central Italy, which suffered significant damage during the August 2016 Central Italy earthquake. The aim is to investigate the effect of the masonry infill to the seismic performance of the building. The three-dimensional (3D) frame building is modeled using the Opensees software, where the beam and column elements are modeled by using a nonlinear hinge model and the infill is idealized as diagonal struts with nonlinear hysteretic behavior. Nonlinear static and dynamic analyses are performed for both bare and infill frames in order to assess the effect of the masonry infill on the overall seismic response and confirm the actual damage pattern surveyed in the aftermath of the 2016 Central Italy earthquake of the case study.
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