Seismic performance of chevron braced steel frames with and without viscous fluid dampers as a function of ground motion and damper characteristics

Date

2007-08-01

Author

Dicleli, Murat

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

292
views

0
downloads

This study is aimed at comparing the seismic performance of steel chevron braced frames (CBFs) with and without viscous fluid dampers (VFDs) as a function of the intensity and frequency characteristics of the ground motion and VFD parameters. For this purpose, comparative nonlinear time history (NLTH) analyses of single and multiple story CBFs with and without VFDs are conducted using ground motions with various frequency characteristics scaled to represent small, moderate and large intensity earthquakes. Additionally, NLTH analyses Of Single and multiple story CBFs with VFDs are conducted to study the effect of the damping ratio and velocity exponent of the VFD on the seismic performance of the frames. The analysis results revealed that the seismic performance of the CBFs without VFDs is very poor and sensitive to the frequency characteristics and intensity of the ground motion due to brace buckling effects. Installing VFDs into the CBFs significantly improved their seismic performance by maintaining their elastic behavior. Furthermore, VFDs with smaller velocity exponents and larger damping ratio are observed to be more effective in improving the seismic performance of the CBFs. However, VFDs with damping ratios larger than 50% do not produce significant additional improvement in the seismic performance of the CBFs.

Subject Keywords

Mechanics of Materials, Civil and Structural Engineering, Metals and Alloys, Building and Construction

URI

https://hdl.handle.net/11511/42117

Journal

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH

DOI

https://doi.org/10.1016/j.jcsr.2006.09.005

Collections

Department of Engineering Sciences, Article

Suggestions

OpenMETU
Core

Evolutionary structural optimization of steel gusset plates Khalaf, A. A.; Saka, M. P. (Elsevier BV, 2007-01-01) Evolutionary structural optimization is applied to determine the optimum shape of steel gusset plates subjected to axial forces. A number of different gusset plates used in various types of connections is considered for this purpose. The evolutionary structural optimization approach is employed to find the optimum shapes of a gusset plate used in these connections. The first example considers a gusset plate having two holes which are utilized in the connection of double angle carrying a tensile force. Withi...
Fatigue in jointless bridge H-piles under axial load and thermal movements Karalar, Memduh; Dicleli, Murat (Elsevier BV, 2018-08-01) The seasonal and short-term temperature variations produce cyclic horizontal displacements in the continuous superstructure of jointless bridges and hence in the abutment piles. Thorough study of the available field measurement data for jointless bridges showed that the thermal-induced cyclic flexural strains in steel H-piles (SHPs) at the abutments are composed of large, primary small and secondary small flexural strain cycles. While the SHPs at the abutments of jointless bridges laterally deform and exper...
Analytical prediction of thermal displacement capacity of integral bridges built on sand Dicleli, Murat (SAGE Publications, 2005-02-01) In this research, analytical equations are developed to calculate the lateral displacement capacity and maximum length limits of integral bridges built on sand based on the low-cycle fatigue performance of the piles under cyclic thermal variations and the ultimate strength of the abutment under positive thermal variations. To formulate the displacement capacity and maximum length limits of integral bridges based on the low cycle fatigue performance of steel H-piles under cyclic thermal variations, first, H-...
Seismic performance of a special type of single-story eccentrically braced steel frame Dicleli, Murat (SAGE Publications, 2008-02-01) This research is aimed at studying the seismic response of a single story non-buckling eccentrically braced steel frame (NBF) in relation to conventional moment resisting frame (MRF) and concentrically braced frame (CBF). The NBF is intended to combine the advantages of MRF and CBF and eliminate most of the disadvantages pertinent to these frames. Nonlinear static pushover and time history analyses are conducted to assess the performance of the NBF compared to the performance of MRF and CBF. The analyses re...
Efficient energy dissipating steel-braced frame to resist seismic loads Dicleli, Murat (American Society of Civil Engineers (ASCE), 2007-07-01) In this research, the seismic performance of a proposed efficient energy dissipating steel-braced frame (EEDBF) in relation to that of a moment-resisting frame (MRF) and chevron braced frame (CBF) is studied. The frame is intended to combine the advantages of MRF and CBF and eliminate most of the disadvantages pertinent to these frames. Nonlinear static pushover, time history, and damage analyses of the three frames are conducted to assess the performance of the EEDBF compared to that of MRF and CBE The ana...

Citation Formats

M. Dicleli, “Seismic performance of chevron braced steel frames with and without viscous fluid dampers as a function of ground motion and damper characteristics,” JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH, pp. 1102–1115, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42117.