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Earthquake and Postearthquake Fire Testing of a Midrise Cold-Formed Steel-Framed Building. Ⅰ: Building Response and Physical Damage
| 题名： | Earthquake and Postearthquake Fire Testing of a Midrise Cold-Formed Steel-Framed Building. Ⅰ: Building Response and Physical Damage |
| 正文语种： | eng |
| 作者： | Hutchinson, Tara C.;Wang, Xiang;Hegemier, Gilbert;Kamath, Praveen;Meacham, Brian |
| 作者单位： | Univ Calif San Diego Dept Struct Engn La Jolla CA 92093 USA;Univ Calif San Diego Dept Struct Engn La Jolla CA 92093 USA;Univ Calif San Diego Dept Struct Engn La Jolla CA 92093 USA;Holmes Fire LP 2-414 Kent St Sydney NSW Australia|Worcester Polytech Inst Dept Fire Protect Engn Worcester MA 01609 USA;Worcester Polytech Inst Dept Fire Protect Engn Worcester MA 01609 USA|Meacham Associates 4 Woodchuck Hill Rd Shrewsbury MA 01545 USA |
| 关键词： | Cold-formed steel (CFS);Fire testing;Light-framed construction;Seismic performance;Shake-table testing |
| 摘要： | To advance understanding of the multihazard performance of midrise cold-formed steel (CFS) construction, a unique multidisciplinary experimental program was conducted on the Large High-Performance Outdoor Shake Table (LHPOST) at the University of California, San Diego (UCSD). The centerpiece of this project involved earthquake and live fire testing of a full-scale 6-story CFS wall braced building. Initially, the building was subjected to seven earthquake tests of increasing motion intensity, sequentially targeting service, design, and maximum credible earthquake (MCE) demands. Subsequently, live fire tests were conducted on the earthquake-damaged building at two select floors. Finally, for the first time, the test building was subjected to two postfire earthquake tests, including a low-amplitude aftershock and an extreme near-fault target MCE-scaled motion. In addition, low-amplitude white noise and ambient vibration data were collected during construction and seismic testing phases to support identification of the dynamic state of the building system. This paper offers an overview of this unique multihazard test program and presents the system-level structural responses and physical damage features of the test building throughout the earthquake-fire-earthquake test phases, whereas the component-level seismic behavior of the shear walls and seismic design implications of CFS-framed building systems are discussed in a companion paper. |
| 出版年： | 2021 |
| 期刊名称： | Journal of structural engineering |
| 卷： | 147 |
| 期： | 9 |
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