Dissertation > Excellent graduate degree dissertation topics show

Research on the Out-Of-Plane Effective Length Factor of Brace in SHS Truss Using Gapped K-Joint

Author: QinXuFu
Tutor: WuZhenYu
School: Harbin Institute of Technology
Course: Structural Engineering
Keywords: Gapped K-joint Rotational stiffness Out-of-plane effective length factor Finite element analysis Multi-parameter regressive formula
CLC: TU392.3
Type: Master's thesis
Year: 2007
Downloads: 106
Quote: 1
Read: Download Dissertation

Abstract


In HSS (Hollow Structural Sections) truss, the chords provide great restraints on the braces. So the effective length factor of braceμis less than 1.0. According to the Eurocode3, The effective length factor of brace of directly welded HSS truss is 0.75. However, the effective length factor of HSS truss is not specified in Chinese Code. In practice, HSS truss is supposed to be pinned. So it is necessary to do some research on the effective length factor of HSS truss. In this paper, a systematic parametric research on effective length factor of compression brace is carried out by ANSYS.Firstly, the compression brace is simplified as an axial compression member with elastic rotational restraints. According to stability theory of steel structures, the equilibrium differential equation is established. From the equation, the stability formula of compression brace is obtained. Then, the effective length factor of brace is obtained by stability formula and the Euler formula when the rotational stiffness is available.Secondly, the FE model of gapped K-joint is established. Then the out-of-plane rotational stiffness of the joint is calculated. Extensive FE analysis for out-of-plane rotational stiffness of the joint is conducted. Considering the parameters such asβ,γ,τ, g,η,θ, C, more than 300 joints are analyzed and the variation of rotational stiffness of the joint with geometrical parameters are available.Through the multi-parameter regressive analysis, equations calculating out-of-plane rotational stiffness of the joint are acquired. The out-of-plane rotational stiffness of the joint calculated from the equations coincide with the results that are obtained by finite element analysis.According to the stability formula of brace and the rotational stiffness of the joint, the effective length factor is calculated. The variation of effective length factor with the geometrical parameters is obtained. The equation calculating the effective length factor is acquired through multi-parameter regressive analysis.

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. Simplified Analysis of Semi-Rigid Steel Frames under Vertical Loading,TU391
  5. Study on the Design and Biomechanical Behaviors of Individualized Artificial Knee Joint,R318.1
  6. Design of Testing Equipment for Electronic Products,TN06
  7. Multi-pin Internal Fixation of Calcaneal Fractures in Finite Element Analysis,R687.3
  8. Airborne radar antenna pedestal rapid design systems research and development,TN959.73
  9. Sham hose drum drive means and hydraulic system of the structure,TE973
  10. Study of the Tunnelling Laneway Drilling and Anchor Rope Installation Device,TD353
  11. Study on Mechanical Property of Plug-pin Steel Tube Scaffold Platform,U673.3
  12. A strong dynamic load mechanical holder dynamics simulation and finite element analysis,TJ03
  13. TVM subway ticket design and analysis of the transmission device,U293.22
  14. The magnetorheological damper mechanical properties and Gun Recoil,TB535.1
  15. Nonlinear Structural Dynamics Analysis and Optimization Design on Naval Gun Driver,TJ391
  16. Design and Analysis of Automatic Steel Pipes Butt Tool,U673.38
  17. Analysis on Unloading of Large Span Steel Structures and Research on Its Mechanical Analysis,TU391
  18. Study on Virtual Simulation Technology of Safety Valves Based on SolidWorks,TH134
  19. Optimized Design of New Style Mast of ZJ50L Drill Rig,TE923
  20. The Structure Design and Finite Element Analysis for the Light Hydraulic Support with Auxiliary Beam,TD355.4
  21. Analysis on Static-dynamic and Fatigue Characteristics of Metallurgical Overhead Traveling Crane,TH215

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