Shake table test of Y-shaped eccentrically braced frames fabricated with high-strength steel
发布时间：2024-08-09
点击次数：
- 所属单位：
- 土木工程学院
- 发表刊物：
- EARTHQUAKES AND STRUCTURES
- 关键字：
- eccentrically braced frames (EBFs) high-strength steel (HSS) shake table test dynamic properties seismic performance numerical simulation
- 摘要：
- To investigate the seismic performance of Y-shaped eccentrically braced frames fabricated with high -strength steel (Y-HSS-EBFs), a shake table test of a 1:2 scaled three-story Y-HSS-EBF specimen was performed. The input wave for the shake table test was generated by the ground motions of El Centro, Taft, and Lanzhou waves. The dynamic properties, acceleration, displacement, and strain responses were obtained from the test specimen and compared with previous test results. In addition, a finite element model of the test specimen was established using the SAP2000 software. Results from the numerical analysis were compared with the test specimen results. During the shake table test, the specimen exhibited sufficient overall structural stiffness and safety but suffered some localized damage. The lateral stiffness of the structure degenerated during the high seismic intensity earthquake. The maximum elastic and elastoplastic interstory drift of the test specimen for different peak ground accelerations were 1/872 and 1/71, respectively. During the high seismic intensity earthquake, the links of the test specimen entered the plastic stage to dissipate the earthquake energy, while other structural members remained in the elastic stage. The Y-HSS-EBF is a safe, dual system with reliable seismic performance. The numerical analysis results were in useful agreement with the test results. This finding indicated that the finite element model in SAP2000 provided a very accurate prediction of the Y-HSS-EBF structure's behavior during the seismic loadings.
- 第一作者：
- 苏明周
- 论文类型：
- 期刊论文
- 通讯作者：
- Lian, Ming
- 学科门类：
- 工学
- 卷号：
- 卷: 12 期: 5 页: 501-513
- ISSN号：
- 2092-7614
- 是否译文：
- 否
- 发表时间：
- 2017-05-01