Dissertation > Excellent graduate degree dissertation topics show

A Beam on Elastic Foundation with Support of Vertical Piles Including the Effects of Large Deflection and Horizontal Friction

Author: ZhouHui
Tutor: LuoSongNan
School: Hunan University
Course: Solid Mechanics
Keywords: Beam on elastic foundation Large deformation Horizontal resistance Vertical piles supporting Internal forces Deflection
CLC: U213.1
Type: Master's thesis
Year: 2009
Downloads: 130
Quote: 0
Read: Download Dissertation

Abstract


Railway and highway construction, when the line passing through the soft soil section, subgrade settlement is one of the most important issue to resolve, therefore the foundations of a variety of ways to strengthen the beams are widely used in subgrade engineering. In this paper, geometric non-linear relationship, taking into account the ground reaction force and the horizontal resistance force and deformation analysis of elastic foundation beam with vertical piles supporting the strengthening In this paper, some of the basic concepts of elastic foundation beam comprehensive overview, summary and analysis of the design and method of calculation of the elastic foundation beam. Overcome only consider small deformation and foundation defects perpendicular to the direction of the reaction force, considering the large deformation and horizontal resistance, and set the horizontal resistance and vertical support reaction force is proportional to arbitrary symmetric loads finite length of elastic foundation beam integro-differential equations; reasonable displacement shape function assumes that the calculus of equations into a nonlinear algebraic equation group using the Galerkin method, iterative method for solving elastic foundation beam displacement and internal force solution. Analysis of the impact of the large deformation and horizontal resistance force and deformation of elastic foundation beam, excluding the vertical piles supporting instance, draw only consider large deformation and horizontal resistance, limited in any symmetric loads long elastic beam displacement and internal force solution, the level of frictional resistance of the elastic foundation beam internal force. The analysis shows that the level of friction on the elastic foundation beam deflection and shear, and the great influence of the bending moments and axial force, so when you want to consider the intensity of the beam on elastic foundation, we must consider the impact of the level of frictional resistance. Examples of elastic foundation beam with vertical piles supporting the strengthening will the vertical piles supporting simplify suitable spring support, taking into account large deformation and horizontal resistance, any symmetric loads with vertical piles supporting the limited long elastic beam displacement and internal force solution. The calculation results show that the vertical piles support can greatly change the elastic foundation beam deformation and stress state, arranged vertical piles can greatly reduce the elastic foundation beam deflection and moment. The innovation of this paper is based on the the winkler beam theory, considering the large deflection and horizontal resistance, the establishment of the basic equations of elastic foundation beam with vertical piles supporting arbitrary symmetric loads, the shape function and Galerkin method to solve to get the curve of displacements and internal forces along the axis of the beam on elastic foundation under various loads. The conclusion of the text provides a new method and design basis for engineering applications.

Related Dissertations

  1. Theoretical Analysis and Related Tests on Concrete Beam Prestressed with FRP Bars,TU375.1
  2. Study on the Excavation and Supporting Technology of Deformationproperties of Soft and Weak Surrounding Rock in Tunnel,U455.7
  3. Steel-High Strength Concrete Beams Nonlinear Analysis,TU398.9
  4. Analysis of the Inner Corridor Concrete Frame Safety Performance in the Site of Ground Fracture,TU375.4
  5. Full-face Formwork Pre-camber Analysis and Design for Continuous Beam Bridge,U448.215
  6. Analysis of Structure Simulation for Long-span Prestressed Concrete Continuous Rigid-frame Bridge,U448.23
  7. Modeling Theory and Experiment Research for Flexible Multibody System with Large Deformation,TB122
  8. The Evaluation of Void Beneath Slab in Old Concrete Pavement,U416.216
  9. Characteristic Analysis of AC arc in water,TM501.2
  10. Research on Driving Technology of Liquid Crystal Optical Phased Array for Beam Steering,TN141.9
  11. Theoretical and Experimental Research on Deflection Control of Simply-supported-continuous Girder Bridges,U448.213
  12. Analysis of Loading Mechanism and Economy for I-Type Beam of Corrugated Web,TU391
  13. Influence of Deformation Temperature and Deformation Times on Microstructure and Properties of 7A04 Aluminum Alloy,TG146.21
  14. The Analysis of the Mechanical-electro Nonlinear Deformation and Failure Modes of Elastic Polymer Membranes,O484.2
  15. Study of Stability and Disaster Control of Consequent Bedding Rock Slope on Ramp a of Tangtun Expressway,U418.52
  16. Research on Dynamic Response of Pile-soil Interaction Under the Large Ground Displacement Induced by Eearthquake Liquefaction,TU473.1
  17. The Anti-earthquake Study of a New Steel Seismic Isolation Layer,TU352.12
  18. Finite Element Analysis on Mechanical Behavior of the Reinforced Concrete Strengthened with CFRP,TU375.1
  19. Carbon nanotube NEMS switch based design , simulation and process,TB383.1
  20. Structural Health Monitoring of Grand Bridge Based on Neural Network,TP183
  21. Axle load spectrum based on measured axle load conversion with Asphalt Pavement Design Parameters,U416.217

CLC: > Transportation > Rail transport > Railway Line Project > Line constructed > Subgrade
© 2012 www.DissertationTopic.Net  Mobile