Dissertation > Excellent graduate degree dissertation topics show

Analysis and Application for Stability against Buckling of High and Thin Arch Dam Based on Arch-cantilever Trial Method

Author: LiHui
Tutor: WangZhengZhong
School: Northwest University of Science and Technology
Course: Hydraulic Structure Engineering
Keywords: High-thin arch dam Arch-cantilever trial load method critical loads horizontal arch rings buckling stability
CLC: TV642.4
Type: Master's thesis
Year: 2013
Downloads: 4
Quote: 0
Read: Download Dissertation

Abstract


The west-China Development and Strategic carry forward the economy, with the rapidconstruction industry of water conservancy and hydropower’s development in the southwestand northwest china, there will a group of high dam is being built in the mountains or canyons,of which there are many scientific issues need to be explored. With the use of high strengthconcrete and continuous progress of optimization design technology, the thickness of archdam is so thin that part of the site is close to the shell structure, the problem of bucklingstability of arch dam has gradually attracted everyone’s attention. The current standards do notcover more than200m range of arch dam, rarely involves the study of buckling of thin shellon evaluate the safety of arch dam, considering the influence of dam arch on curvature and theshear deformation in buckling stability calculation; lack of buckling instability in the designoptimization, in this paper present the following three parts:(1)Because of thickness and arc length are large at the lower&mid dam, which belongsto large curvature, considering the size effect on the critical load case, the third chapter willconsider the large curvature arch in the hinged and fixed support horizontal circle arch ringsunder uniform pressure, critical load is about the nonlinear function of thickness and arclength.(2)In this paper, the finite element results based on arch-cantilever method, defined thesafety coefficient of horizontal arch as the evaluation index of stability for the horizontal archring, the critical loads divided by the horizontal arch ring calculating by arch-cantilevermethod, the ratio is safety coefficient of horizontal arch, improved critical loads of arch ringwhich considering the effect of shear deformation and curvature, five engineering examplesshow that, compared with the cracking possible position and the actual destruction position,the results showed that the trend is consistent. So safety factor as the evaluation index toassess the arch buckling stability is practical significance, and in the end of the chapter thestatistics showed the critical slenderness coefficient.(3)With the development and application of high strength concrete in arch dam, which bebuilt in mountain valleys, optimization design is trend to reduce thickness, rarely focus onthe buckling stability of arch dam, considering the establishment of high and thin arch dam structure optimization model, this paper add resistance to buckling stability conditions for theoptimization calculation, compared with the original optimization scheme, the bucklingstability factor as a control condition is more reasonable.

Related Dissertations

  1. The Research of VP Technologies for the Railway Tank Cars Design,U272.4
  2. Support the position of the light work shaped steel beam lateral stability,TU392.1
  3. Steel - concrete composite box girder stability,TU398.9
  4. The Computation of Critical Loads on Arbitrary Restrainted Thin-walled Members Using Finite Elements Method,TU33
  5. Effects of the Three-Gorge Project on the Ecological Environment of Dongting Lake,X824
  6. Roll stability and earthquake response analysis of reinforced concrete rib arch bridge,U441.3
  7. Gantry crane structural strength and structural optimization design study,TH213
  8. Simulation Analysis of the Songao Bridge’s Stability and Dynamic Performance,U441
  9. Structure Analysis and Research on the Emergency Track Girder of Chongqing Light Railway,U213.2
  10. Study on Stablity Capacity of Q460 High-strength Steel Single-Angle Compression Members,TU511.3
  11. Control Optimization Method of Piezoelectric Structures and Optimum Design on Structural Buckling,O342
  12. The Research on the Effect of Oblique Angle on Load-carrying Properties of Inclined High Piers,U441
  13. Stability and Earthquake Resistance Analysis of the Parabolic Arch Structure,TU352.11
  14. Simulation Analysis on Temperature Stress of RCC Arch Dam and Its Construction Joints Design Research,TV642.2
  15. Analysis and Study of Abutment Stability in Concrete High Arch Dam by Three-Dimensional Nonlinear Finite Element Method,TV642.4
  16. Stability Analysis of Roller Compacted Concrete Gravity Dam Based on Time-history Method,TV642.2
  17. Simulation of Concrete Dam Construction,TV642
  18. Dynamic damage analysis of concrete gravity dam,TV642.3
  19. Cause Analysis on High Uplift Pressure and Safety Assessment of Huaguangtan Arch Dam,TV642.4
  20. Finite element analysis of the temperature field and stress field of the concrete arch dam construction period,TV642.4;TV315
  21. Topology Optimization Method of Gravity Design,TV642.3
  22. Arch border and its transient temperature stress calculation and analysis,TV642.4

CLC: > Industrial Technology > Hydraulic Engineering > Water control,hydraulic structures > Dams > Concrete dam > Arch dam
© 2012 www.DissertationTopic.Net  Mobile