Dissertation > Excellent graduate degree dissertation topics show

Effective Length Factor of Column in Eccentrically Braced Steel Frames with Semi-rigid Connections

Author: GuoJinChi
Tutor: WangWanZuoï¼›DangXingHai
School: Lanzhou University of Technology
Course: Structural Engineering
Keywords: steel frame eccentrically braced semi-rigid connections effective length finite element analysis
CLC: TU391
Type: Master's thesis
Year: 2009
Downloads: 52
Quote: 3
Read: Download Dissertation

Abstract


There are two systems of conventional tall steel buildings:moment-resisting frames and concentrically braced frames.Moment-resisting frames have good inelastic behavior and are easy in interior planning thanks to being without obstacle between columns.Being with great flexibility,however,it is not economical to meet the inter story driftlimit when the building is high.Concentrically braced frames can provide high elastic stiffness and are widely used.But the buckling of the brace can make the capacity drop.Eccentrically braced frames have the advantages of both moment-resisting frames and concentrically braced frames.This system can provide high elastic stiffness and large inelastic energy dissipation capacity in resisting laterall oadsc ausedb ys eism ic a ctivity.They can reduce material consumption,and keep good ductility at extreme overloads.In high seismic regions,eccentrically braced frames are quite popular,they have good ductility and can sustain to severe cyclic loads, and they are used widely in seismic design.The trditional analysis and design of steel frame assume beam-column connections are fully rigid or ideal pin connections.In fact,all connections of the steel structures,in practice,are between to fully rigid and pin connections and belong to semi-rigid connections.The effect of connection behavior can be described by beam-to column connection moment-rotation curve.On base of concept effective length factor of columns in semi-rigid steel frames stability design,by considering semi-rigid moment-rotation nonlinear behavior of semi-rigid connection in whole loaded range,finite element models of eccentrically braced steel frames with semi-rigid and rigid connections were established using ANSYS program.Nonlinear finite element analysis of steel frames with four angle connections and top-seat angles connections and double web angle connections were conducted in literature.Through buckling analysis of eccentrically braced steel frames with semi-rigid connections,the effective length factor of eccentrically braced steel frames was derived.In conclusion,a simple formula of effective length of column was brought forward for engineering design.

Related Dissertations

  1. Research on the Mainframe System of Powder Mixed EDM and the Craft Experiment,TG661
  2. EDM Electrode Wear Mechanism and Control Research,TG661
  3. Finite Element Analysis and Structure Optimal Design for Combined Seal at Normal Temperature and Low Temperature,TH136
  4. Study on the Design and Biomechanical Behaviors of Individualized Artificial Knee Joint,R318.1
  5. Design of Testing Equipment for Electronic Products,TN06
  6. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  7. Airborne radar antenna pedestal rapid design systems research and development,TN959.73
  8. Sham hose drum drive means and hydraulic system of the structure,TE973
  9. The magnetorheological damper mechanical properties and Gun Recoil,TB535.1
  10. Nonlinear Structural Dynamics Analysis and Optimization Design on Naval Gun Driver,TJ391
  11. Design and Analysis of Automatic Steel Pipes Butt Tool,U673.38
  12. Analysis on Unloading of Large Span Steel Structures and Research on Its Mechanical Analysis,TU391
  13. Research about Standardized Design of the Integrated Building at the Highway Service Area,TU248
  14. Simulation of the Clinching Process Using FEA Method with Steel and Aluminum Alloy Sheets for Automotive Sunroof Frame,U463.83
  15. M1 of CRH2-300 Train Finite Element Analysis and Travelling Comfort,U266
  16. The Design of Telescopic Asphalt Spraying System,U415.524
  17. Development of Post-process System in Sheet Metal Simulation Based on SolidWorks,TP391.72
  18. Failure Analysis and Structural Optimization of the Typical Fine Blanking Punch,TG385.2
  19. The Structure Design of 2000kN Servo Press for Hot Forming,TG385
  20. Al Wire Bonding Failure and Automatic Optical Inspection on Power Device Leadframe,TG441
  21. Simulation Analysis and Experimental Study on Hysteretic Behavior of High-performance Shear Panel Damper,TU352.1

CLC: > Industrial Technology > Building Science > Building structure > Metal structures > Steel
© 2012 www.DissertationTopic.Net  Mobile