›› 2012, Vol. 33 ›› Issue (2): 558-563.

• Geotechnical Engineering • Previous Articles     Next Articles

Study of road surface settlement rule and controlled criterion for railway tunnel undercrossing highway

ZHU Zheng-guo1, HUANG Song2, ZHU Yong-quan1   

  1. 1. School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China; 2. China Railway Tunnel Survey & Design Institute, Luoyang, Henan 471009, China
  • Received:2010-07-16 Online:2012-02-10 Published:2012-02-14

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Abstract: At present, there is no unified surface settlement rule and controlled criterion for the settlement induced by railway tunnel undercrossing highway, which is researched only based on an actual project. From the aspects of longitudinal-transverse slope, smoothness, and requirements for stability of highway, the requirements for smoothness are adopted to control road surface uneven settlement during construction. According to embankment height, tunnel size, depth, geology, construction method, construction process of single and dual-lane railway tunnels undercrossing highway is simulated by FLAC software. The rule of road surface settlement is studied. In addition, the width coefficient of settling tank and prediction model for the largest settlement are obtained. Based on them, pavement surface settlement controlled criterion is established for railway tunnel undercrossing highway. At the same time, the rationality of controlled criterion is verified through several case studies. The results can provide reference for establishment of pavement surface settlement controlled criterion for railway tunnel undercrossing surface buildings.

Key words: undercrossing, tunnel, smoothness, road surface settlement

CLC Number: 

  • TU 455
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