Loading...
| Friend's email | |
| Your name | |
| Your email | |
| enter code | |
This page was sent successfuly
- Type of Document: M.Sc. Thesis
- Language: English
- Document No: 40276 (53)
- University: Sharif University of Technology, International Campus, Kish Island
- Department: Science and Engineering
- Advisor(s): Kazemi, Mohammad Taghi
- Abstract:
- This thesis investigates the performance of concentrically braced frames through numerical simulation approaches. During a moderate to severe earthquake, the bracing members and their connections are expected to undergo significant inelastic deformations into the post-buckling range. Recently, provisions for special concentrically braced frames (SCBFs) were developed to exhibit stable and ductile behavior in the event of a major earthquake. Special Concentrically Braced Frames (SCBFs) are distinguished from Ordinary Braced Frames in that they possess improved post-buckling capacity. Performance based evaluation of SCBF system as well as ordinary concentrically braced frame (OCBF) system under seismic lateral force is the main concern of this thesis. For this evaluation linear static analysis, linear dynamic analysis (Response spectrum) and nonlinear static analysis (pushover) are used to analyse several braced frames. Ductility demand and capacity of sample structures are studied and compared. The performance of the systems with three, six, nine and twelve-story braced frame buildings, which have been designed for a site in Tehran according to 2800 Iranian code, was studied. The proposed design strategy results in SCBFs frames having more ductile behavior and higher capacity than OCBFs.
- Keywords:
- Seismic Design ; Ordinary Concentric Braced Frame System (OCBF)System ; Special Concentrically Braced Fram System (SCBFS)System
Digital Object List-
محتواي پايان نامه - view
Bookmark- Introduction and Research Objectives
- Introduction:
- Hysteretic Energy Dissipation
- Research Objectives
- . Introduction
- Bracing Members and Connections Behaviors
- Gusset Plate Behavior
- System Behavior
- Columns
- Limits on Effective Slenderness Ratio
- Limits on Width-to-Thickness Ratio
- Bracing Connections Design Requirements
- Special Requirements Related to Bracing Configuration
- Columns and Beams
- Introduction
- Geometry and Details of the Structures
- Structural Materials
- Frame Sections
- Design loads
- Seismic Load Determination
- Equivalent Static Procedure
- Computer Model Description
- Applicable Load Combinations
- Linear Static Procedure
- Basis of Linear Static Procedure
- Three Story SCBF and OCBF Designed Sections with Static Linear Analysis
- Six Story SCBF and OCBF Designed Sections with Static Linear Analysis
- Nine Story SCBF and OCBF Designed Sections with Static Linear Analysis
- Twelve Story SCBF and OCBF Designed Sections with Static Linear Analysis
- Calculation of Story Drifts
- Linear Dynamic Procedure (Response Spectrum)
- Nonlinear Static Procedure Analysis
- Basis of the Nonlinear Static Procedure
- Modeling and Analysis Considerations
- Nonlinear Static Procedure
- Determination of Target Displacement
- Discussions
- Pushover Analysis Results for 3-Story SCBF and OCBF
- Pushover Analysis Results for 6-Story SCBF and OCBF
- Pushover Analysis Results for 9-Story SCBF and OCBF
- Pushover Analysis Results for 12-Story SCBF and OCBF
- Figure 5.17 Pushover curve for 12-story SCBF (kg-m)
- Comparison of the Results
- Conclusion and Future Study