Dissertation > Excellent graduate degree dissertation topics show

Semi-rigid Joint and Global Stability Capacity Research of High-formwork-supports with Couplers

Author: ZhangHuaZhen
Tutor: HuChangMing
School: Xi'an University of Architecture and Technology
Course: Structural Engineering
Keywords: high-formwork-supports system with couplers torsion stiffness load experiment ultimate bearing capacity semi-rigid
CLC: TU755.2
Type: Master's thesis
Year: 2009
Downloads: 137
Quote: 2
Read: Download Dissertation

Abstract


With the quickening of the urbanization process,the application of high-formwork -supports with couplers in the structural construction of cast-in-situ concrete is more and more extensive,and its consumption is the largest,its application is the widest in all form of formwork-supports at present in our country.But because some uncertain, unsafe factors exist in calculation of structural design and set up the frame in practice, caused the collapse of high-formwork-supports with couplers happened again and again, influenced the safety of construction and the use of building seriously.For formwork-supports,high-formwork-supports with couplers are commonly used,its stability capacity is a question which need urgently to solve.So,the paper mainly research the semi-rigid joint and global stability capacity of high-formwork-supports with couplers.The main content and conclusion in this paper are:1、This text investigated the domestic and international existing high-formworksupports with couplers,took the experiments of right-angle coupler of torsion stiffness, lateral stiffness of single frame and instability of whole frame in the laboratory,and gained the initial value of torsion stiffness in different bolt tightening moment by right-angle coupler,the modified factor of transverse stiffness in single frame and ultimate bearing capacity of single bar of high-formwork-support with couplers.2、We generalized and analyzed the value of experiment combine with theory,gained the relation of bolt tightening moment and initial value of torsion stiffness by right-angle coupler,and established the relative formula of effective length factors of columns of high-formwork-supports and bolt screw moment T of right-angle coupler. On the basis of study,we applied the finite element software—sap2000,simulated the experimental model by semi-rigid joint,and loaded the horizontal force of different size on the joint of the model,found that value of ultimate bearing capacity that loaded the horizontal force of 1%ultimate bearing capacity(weak-rigidity direction)on the joint by calculation of finite element is accords with value of experiment of whole frame.3、We carried on field test of high-formwork-supports in Xi’an high-tech industrial development zone,gained some useful data,and verified the above-mentioned achievements by data and finite element analyse.

Related Dissertations

  1. Simplified Analysis of Semi-Rigid Steel Frames under Vertical Loading,TU391
  2. Lining the structure carrying capacity study tunnel fire,U451
  3. Experimental Investigation and Study on the Bridges Strengthened Using Steel Plate and Concrete Composite Strengthening Technique,U445.72
  4. Study on Mechanical Property of Prestressed Concrete Girders Strengthened with CFRP,U441
  5. Research on the Fatigue Performance of Cement Stabilized Subbase Course Materials,U414
  6. The Research of Cold Recycling Asphalt Pavement Materials Stabilized by Cement of Semi-Rigid Base,U414
  7. The Application of the Cold Recycled of Cement Mixture in the Repair Works of Asphalt Pavement,U414
  8. The Research of Rectangular Column Reinforced by Carbon Fiber Based on Secondary Load,TU375.3
  9. Semi-rigid Steel Beam-column Minor Axis Mechanical Properties of the Connection,TU391
  10. Test and Analysis on Load-bearing Capacity of Steel Tubular Falsework with Bowl-button-type Connection,TU755.2
  11. Analysis of the Cable and Tower of Long-Span Suspension Bridges,U448.25
  12. Synthesis and Characterization of Novel Block Polymers Based on Semi-rigid Thermoresponsive Chain,O631.3
  13. Preparation and Characterization of a Novel Semirigid Thermoresponsive Random Copolymers,O631.3
  14. Round button steel formwork Stability Capacity,TU731.2
  15. Experimental and Theoretical Study on Seismic Behavior of Traditional Timber Structures,TU366.2
  16. Tamping Load Experiment and Checking Analysis for 5.5m Stamping Charging Car,TQ520.5
  17. Environmental change on semi- rigid asphalt pavement limit Axle Load,U416.217
  18. Accelerated Pavement Testing Equipment Assembly and Use of Technology,U416.03
  19. Development of a System Based Genetic Algorithm and Back Propagation Neural Networks for Vertical Bearing Capacity Prediction and Design Optimization of Foundation Pile,TU473.11
  20. Lumbar half strong and rigid internal fixation of adjacent segment degeneration comparative study,R687.3
  21. Steel - concrete composite beams Cellular ( hole ) theoretical analysis and experimental study,TU398.9

CLC: > Industrial Technology > Building Science > Construction > The project and the type of work > Concrete and reinforced concrete works > Template project
© 2012 www.DissertationTopic.Net  Mobile