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Comprehensive Technology Study on Soil Two-Lane Highway Tunnel of Ultra-Shallow Undercrossing Multi-Line Railwawy and Expressway

Author: ZhuZhaoGeng
Tutor: WangMingNian
School: Southwest Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Shallow Railway Tunnel Pipe roof Surface subsidence prediction Numerical calculation Construction process
CLC: U455.4
Type: Master's thesis
Year: 2011
Downloads: 30
Quote: 1
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Abstract


Tunnel in Xiamen as the background , shallow railway tunnel and highway tunnel , has a strong practical engineering value , do the following work : (1) collect a large number of applications bassoon shed support technology engineering examples , selected from the 10 instances of similar Xiamen tunnel project . Focus on understanding the design parameters of the pipe roof , construction techniques and surface subsidence control effect obtained the parameter range of engineering support and sedimentation control standards . (2) different pipe roof parameters numerical calculations and field data analysis shows that the support parameters applicable to engineering . (3) due to a variety of shallow tunnel excavation surface subsidence prediction methods for comparative analysis, and ultimately determine the random theory based unit excavation caused surface subsidence formula and any arc segment on the basis of the formula caused surface subsidence derivation and improvement of the integral formula , and eventually come to surface load of surface subsidence formula . ( 4 ) analysis of the domestic and international advance support , analysis of the characteristics of the various methods , and eventually obtained the engineering steel pipeline shed grouting advance support . ( 5 ) the use of numerical methods railway , highway tunnel to wear under the project co-repair surface and sub- repair two scenarios for comparative analysis of tunnel security , structural mechanics behavior by comparing two scenarios after excavation and excavation displacement and ground , to draw sub repair program is superior to co-repair program . ( 6) the use of numerical methods to wear a railway tunnel under the project , a highway tunnel construction process and bracing to simulate different conditions obtained optimal construction conditions of the tunnel construction . (7 ) In the case of the dynamic load , the analysis of the tunnel center surface subsidence, and obtained the law of surface subsidence and Speed ??of Train .

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CLC: > Transportation > Road transport > Tunnel project > Tunnel construction > Construction methods
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