Seismic testing and numerical analysis of Y-shaped eccentrically braced frame made of high-strength steel
Release time:2024-08-09
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- Affiliation of Author(s):
- 土木工程学院
- Journal:
- STRUCTURAL DESIGN OF TALL AND SPECIAL BUILDINGS
- Key Words:
- eccentrically braced frame (EBF) finite element analysis high-strength steel (HSS) seismic performance shake table test
- Abstract:
- In eccentrically braced frame made of high-strength steel (HSS-EBF), link and brace are made from conventional steel whereas other structural members use high-strength steel. Using HSS for beams and columns in EBF can reduce steel consumption and increase economic efficiency. In this paper, one shake table test of a 1:2 scaled three-story Y-shaped HSS-EBF (Y-HSS-EBF) specimen was carried out to study its seismic behavior underground motions with different peak ground accelerations. The dynamic properties, base shear force, displacement, and strain responses of the specimen were obtained from this test. In addition, the finite element models of two 10-story Y-HSS-EBF buildings and one 10-story conventional Y-EBF building were evaluated for seismic effects. Nonlinear pushover and dynamic analyses were conducted to compare their seismic performance and economy. The results indicated that the specimen exhibited sufficient lateral stiffness and safety but suffered some localized damages. During the high seismic intensity earthquakes, the links of the test specimen were in inelastic to dissipate the earthquake energy, whereas other structural members remained in the elastic state. Under the same design conditions, Y-HSS-EBF used less steel than that of conventional Y-EBF, which could reduce the amount of steel used in Y-HSS-EBF. The Y-HSS-EBF is a safe, dual system with reliable seismic performance.
- First Author:
- sumingzhou
- Indexed by:
- Journal paper
- Correspondence Author:
- Lian, Ming
- Discipline:
- Engineering
- Volume:
- 卷: 27 期: 6
- ISSN No.:
- 1541-7794
- Translation or Not:
- no
- Date of Publication:
- 2018-04-25