Dissertation > Excellent graduate degree dissertation topics show

Regulation of Surface Settlement in Multi-stratum Geological Condition Shallow Tunnels Construction

Author: SongFengChao
Tutor: XuYingZi
School: Shandong University of Technology
Course: Engineering Mechanics
Keywords: tunnel timbering opportunity scheme selection arrangement forms nearly double-arch tunnel dynamic response
CLC: U231.3
Type: Master's thesis
Year: 2013
Downloads: 31
Quote: 0
Read: Download Dissertation

Abstract


With the development of urban underground traffic, the network is more complex and changeable, emerged many engineering and technical problems, also lead to different surface subsidence change forms. Generally urban subway is shallower and ground have many buildings, a proper system to predict the ground settlement and summarize the rules, not only provide technical support for the similar projects, but also can reduce safety accidents induced by tunnel construction. Founded by the excavation engineering section in No.5line of Guangzhou metro, the paper used the methods of numerical simulation, theory analysis and Engineering monitoring data to research the support optimization of3-D shallow tunnel, the selection of tunnel construction scheme, the rules of surface settlement of dual-tunnel arrangement and the double arched tunnel Construction technology, also the double arch tunnel in seismic wave dynamic response were studied systematically, the main contents and conclusions are as follows:(1) Explained the deformation mechanism of surrounding rock and the support mechanism, and showing the necessity to choose the support timing. The finite element software ABAQUS is used to simulate the exploitation processes to the typical section of3D tunnel, drawing load-deformation curves of surrounding rock and initial support system, fitting and interpolation the two characteristic curves, the best initial supporting time is determined.(2) Relying on underground tunnel of Guangzhou metro line NO.5, established mechanical model of three dimensional parallel A4type section tunnel. Calculation and compared of the tunnel in different construction conditions of surrounding rock stress, displacement field shape, plastic zone distribution and supporting structure stress, the optimal construction scheme was determined.(3) According to the subway line in the form of complex, based on the former two research results, and3D double-line tunnel in underground space several arrangement forms were systematically studied. Obtained in the same geological conditions before or after the tunnel excavation stress of tunnel, displacement and other characteristics, formed a certain change rule.(4) Based on A4type and J type tunnel section, using middle pilot heading and CRD construction method studied the nearly arch tunnel in the mining method of construction technology. It is concluded that the lateral and longitudinal surface subsidence rules and other distribution characteristics and compared with Field monitoring results, at the same time take simple research on the have completion double-arch tunnel under the direction in seismic vibration dynamic response.

Related Dissertations

  1. Study on Dynamic Response and Damage of Structures to Blasting Vibration Waves,TU311.3
  2. Dynamic Response and Quantification Analysis of Defective Piles in Low Strain Situations,TU473.16
  3. Electric vehicle drive control system research,U469.72
  4. Dynamic Response Research of Structures under Blasting Vibration and Disaster Control,TU311.3
  5. Study on Dynamic Response of Orthotropic Membranes under Impact Loading,TU312.1
  6. Research on the Passivity-Based Control of Active Clamp Forward Converter with Integrated-magnetics,TM46
  7. Dynamic Responses Analysis of Petrochemical Control Room under Blast Loading,TU352.1
  8. Three Demention Finite Element Static and Dynamic Analysis for Reservoir Intake Tower-Base Structure,TU435
  9. Study of Planning, Control Process and Its Method under ATO Mode in V Company,F273
  10. Research on Dynamic Performance of the Abnormal Aeousto-Optic Steering System and Feature of Converse Light Route,TN927.2
  11. Damage Evolution Analysis of Rc Frames Structure Induced by Mining and Earthquakes,TU311.3
  12. Investigation on Temporal Property of Human Visual System,TP391.41
  13. Impact on of Pennisetum production and photosynthetic physiological ecology of cutting frequency,S543.9
  14. Simulation Study on Drop Impact of Military Product Packages,TB487
  15. Dynamic Response and Applied Research in Project of Model of Vehicle and Road in Railway Grade Crossing,U211.3
  16. Study on the Dynamic Inverse-Analysis of Flexible Pavement Layer Modulus,U416.2
  17. Tunnel Lining Dynamic Response Analysis,U451.4
  18. Hydrodynamic effects and seismic response under arch bridge collision analysis,U441.3
  19. Elasto-plastic FEM Analysis of Dynamic Response of High Earth-rockfill Dams during Earthquake,TV312
  20. 3D Earthquake Dynamic Response Analysis on High Concretefaced Rockfill Dam,TV31
  21. Structural Design and Dynamic Response Analysis of Concrete Platform Used in Shallow Sea,U656.6

CLC: > Transportation > Rail transport > Special railway > Mass Transit Railway > Subway construction , renovation and expansion
© 2012 www.DissertationTopic.Net  Mobile