Dissertation > Excellent graduate degree dissertation topics show

Seismic Analyses of the Two Pall-typed Frictional Brace Systems

Author: LuAiZhen
Tutor: ZhangJiGang
School: Qingdao Technological University
Course: Structural Engineering
Keywords: Pall-typed frictional damper Steel buckling-restrained brace SMA Hysteretic behavior Seismic behaviors ANSYS
CLC: TU352.1
Type: Master's thesis
Year: 2010
Downloads: 31
Quote: 0
Read: Download Dissertation

Abstract


Frictional energy dissipation technology is a very important research direction in structure vibration control because frictional damper can improve seismic performance of structure with easy fabrication,simple installation,and economical applicability.But the braces of Pall-typed friction damper are easily buckled in a severe earthquake,and its non-recoverable deformation is large.To overcome these shortcomings,this paper proposes two new brace systems,steel buckling-restrained brace and SMA brace, to replace the ordinary braces.and this paper analyzes the hysteretic behaviors of the two new Pall-typed frictional damper using the finite element software ANSYS12.0.In the last,the paper analyzes the seismic performances of the 10-floor steel frame with the two new type Pall dampers and compares their effects with the frame without dampers.The main contents of this paper are as follows:(1) Pall-BRB system,the Pall-typed frictional damper with steel buckling-restained braces(BRB),is proposed.The paper analyzes the hysteretic behaviord of the BRB brace,and studies the effects of the various parameters on the hysteretic behavior.Then the hysteretic behaviors of the single floor steel frame with the new Pall-typed frictional damper are analyzed in detail.The results show that,the brace can easily yielded under tension and comparession and have good capacity to dissipate energy.The results also reveal that the BRB brace system can overcome the default of the ordinary brace and make the force of the frame structure more reasonable.(2) Pall-SMA brace system,the Pall-typed frictional damper with SMA(Shape Memory Alloy) braces,is proposed based on the super-elastic and shape memory properties.The super-elastic and hystereic behaviors of the SMA brace are studied using ANSYS12.0,and the effect of the various material parameters are also analyzed.Then the paper studies the hysteretic behaviors of the single floor steel frame with the new Pall-typed frictional damper in detail,and also analyzes the effects of the length and the stiffness of the SMA brace on it’s hysteretic behavior.The results indicate that the hysteretic loops of the Pall-SMA frictional damper is full and the capability to dissipate energy is better. (3) Taking a steel frame building with the two new Pall-typed frictional dampers as a example in this paper, the responses and the seismic performances of this building subjected to the different predominant period of seismic waves loads are analyzed.The results show that,the two new structures can improve the seismic performance of the frame effectively,and they can also overcome the defaults of the structure with the ordinary Pall-typed frictional dampers.

Related Dissertations

  1. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  2. Broken walnut shell force testing and virtual prototype design of the main components of walnut sheller,S226.4
  3. Osthol on bleomycin- induced pulmonary fibrosis in rats and its mechanism of,R563.9
  4. Pipeline Leakage Detection Technology within the magnetic axis,TH878.3
  5. Real-time medical ultrasound puncture navigation positioning and soft tissue modeling,R318.6
  6. The composite the SMA fibers toughening RPC the mechanics performance and applied research,TU528.572
  7. Key Technology Research for Asphalt Pavement Ultra-thin Overlay,U416.217
  8. Frequency Response Characteristic of the Composite Deposited Confining NiTi SMA Thin Films on the PZT Substrate,TB43
  9. The Effect of Arecoline and Hyperbaric Oxygen to the Expression of α-SMA in Human Umbilical Vein Endothelial Cells,R780.2
  10. Clinical Effection on Abnormal Expression of the Angiopoietin-1&-2 and Receptor Tie-2 in Human Intracranial Aneurysms,R651.1
  11. The Experimental Research of the Interference Effect of Schisandra Chinensis Mixture on Glomerular Fibrosis Progress of Diabetic Nephropathy Mice,R285
  12. Binary Adsorption of Proteins Onto Ion-exchange Chromatographic Media,O647.31
  13. Study on Structural Dynamic of Large Turbine Blade of SMA Composite,TK83
  14. Test Study and Finite Element Analysis of the Work Mechanism of the Rock Anti-Float Anchor,TU472
  15. Study and Application of a New Type SMA Damper on the Performance Based Seismic Design,TU352.11
  16. Study on Crack Resistance Performance of Asphalt Pavement in Cold Region,U416.217
  17. The Main Beam of the 50t/28m Gantry Cranes’ Finite Element Analysis and Structural Optimization and Design,TH213.5
  18. Different types of high-speed railway in non-ballasted track under different loads and deformation of the force,U213.244
  19. Bridges boom Numerical Study of Aerodynamic Performance,U441.3
  20. Research for Vibration Control of High-rise Steel Structure Using SMA Cables,TB123

CLC: > Industrial Technology > Building Science > Building structure > Special Structure > Anti - shock structure,disaster prevention structures > Shock, isolation, and explosion-proof structure
© 2012 www.DissertationTopic.Net  Mobile