Dissertation > Excellent graduate degree dissertation topics show

Research on Mechanical Behavior of Pre-stressed Concrete Girder Transfer Floor Structure

Author: HuangBin
Tutor: ChenLan
School: South China University of Technology
Course: Structural Engineering
Keywords: pre-stressed concrete transfer floor structure seismic analysis nonlinear static pushover analysis stress analysis
CLC: TU378.2
Type: Master's thesis
Year: 2010
Downloads: 56
Quote: 0
Read: Download Dissertation

Abstract


In modern tall buildings, in order to satisfy the large-space function requirements of the construction building large-scale shopping malls, garages, halls at the bottom of buildings or across the road, fire access, underground pipe network and so on, transfer layer is setup at the bottom of buildings necessarily. The requirement of 15 meters service space without columns at the bottom of multi-storey and tall buildings is increased. This means the transfer beams should have good carrying capacity with lager vertical load because of supporting more floors. And Pre-stressed concrete with the advantages of high carrying capacity, good crack resistance and light weight will solve engineering problems well. So in recent years more and more transfer members and cantilever members use the pre-stressed technology in our Country. And its mechanical behavior is one pot of the hot domains because of complexity.First, two transfer floor structure is established in this paper, one is used reinforced concrete transfer beam (called model1)and the other used pre-stressed concrete transfer beam(called model2).The two transfer beams have the same deflection under vertical load ,but have different height. Then studied and analyzed the design method of large-span pre-stressed concrete transfer beam using finite element software SAP2000 and ANSYS10.0, mainly focused on the structure analysis under vertical load, model analysis, response spectrum analysis, pushover analysis and stress analysis of transfer beam. At last compare with the analysis of cracks and stress of the two transfer beams. By using SAP2000 and ANSYS program, the conclusion we can get:1. The use of pre-stressed structural members caused by redistribution of internal forces. In model 2 under vertical load the internal forces of pre-stressed concrete transfer beam is much less than that of reinforced concrete transfer beam in model 1.pillrs directly support pre-stressed transfer beam internal forces declined also. Other internal forces of frame-supporting column is get up or get down.2. Modal analysis showed that the pre-stressed have no effect on dynamic characteristics. In horizontal seismic action, the pre-stress main affect the internal force of transfer floor. Internal force of frame-supporting column in model 2 of decreases more than half, and it become more uniformed.3 Pushover Analysis results shows that the model 2 compared to model 1 under the horizontal load effect the transfer pre-stressed reduce the stress of transfer beam, achieve the target displacement the base shear of model 2 is slightly higher than that of model1.4. Pre-stress reduces the tensile stress in the middle section of the tensile area, but has little effect on the stress in other parts of the transfer beam, the crack developing in tendons part have limited effect with larger vertical deflection.

Related Dissertations

  1. Large opening pressure vessel structural finite element analysis and strength design,TH49
  2. Domestic and concrete highway bridge design method comparative analysis,U448.14
  3. Painting robot design and control method of writing,TP242.3
  4. Prestressed concrete bridge damage detection and evaluation methods,U448.35
  5. Varying analysis considering shear lag effects of variable cross-section PC cantilever box girder,U448.213
  6. PC box girder creep effect analysis based on ANSYS secondary development,U448.35;U441
  7. Study on Mechanical Property of Prestressed Concrete Girders Strengthened with CFRP,U441
  8. Mechanical Analysis of the Deck Paving on the Cement Concrete Bridge with Different Waterproof and Cohesive Layers,U443.33
  9. Structural Static Force Analysis and Optimum Design of High Pressure Vessel for CNG Based on ANSYS,TE972
  10. Study on the Relation between Cracks and Stiffness and Load-carrying Capacity of the Prestressed Concrete Box Girder,U448.213
  11. The Optimization Design of Prestressed Concrete Slab-Column Structure,TU378
  12. Mechanical Property Study of T-head Unbonded Prestressed Steel Reinforced Concrete Beam,TU398.9
  13. Research on Design Method of Prestressed Concrete Box Girder with Corrugated Steel Webs,U448.213
  14. Study on Overall Steel Deck Configuration Detail Fatigue of Continuous Steel Truss Bridge with Four-Line Double-Truss,U443.33
  15. Research on Stress Analysis and Durability of the Destruction of Bridge Deck Pavement,U443.33
  16. The Research of Computer Cooperate Optimal Design for Process Equipment Based on CAE Technology,TP391.7
  17. Design and Simulation Analysis of Double Helical Synchronous Belt Transmission,TH132.32
  18. Open type vertical load analysis Prestressed Concrete Piles,TU473.13
  19. Lateral Confinement Analysis and Aided Design for Prestressed Concrete Structure,TU378
  20. Pre-stressed Concrete Pipe Pile’s Bearing Capacity Research,TU473.1
  21. Span roof structure of the thermal power plant steam room scheme comparison,TU231

CLC: > Industrial Technology > Building Science > Building structure > Concrete structure,reinforced concrete structure > Prestressed Concrete Structure > Girder
© 2012 www.DissertationTopic.Net  Mobile