POINT LOAD TESTING OF FLEXURAL BEHAVIOR OF SEGMENTED TUNNEL LINING

In tunnel, design of precast tunnel lining are not merely about the strength, but how much its allow to move to account the deflection comes from movement of surrounding soil and load. Thus, the design of tunnel lining is not straight forward. Understanding the flexural behavior of segmented lining is a bonus to optimize design lining in cost effective way. Tunnel lining are designed in segment and have joint that allows tunnel to become flexural and allow deformation taken by the lining load carrying capacity. The objective of this paper is to present some of the research works on segmented tunnel lining conducted in the laboratory. A series of laboratory testing of point load test have been developed to imitate behavior of segmental tunnel lining condition in real. Two types of support system were introduced namely pin-pin and pinroller condition to imitate both rigid and hinge condition of lining. Support mechanisms of pinroller support condition shows variation trend in stress-strain and moment readings and meanwhile for pin-pin it show mirror trend for both result. High stiffness of lining is important at the edge of segment.

[1]  Ling-ling Li,et al.  Complex Variable Solutions for Tunneling-Induced Ground Movement , 2009 .

[2]  Supot Teachavorasinskun,et al.  Influence of segmental joints on tunnel lining , 2010 .

[3]  Harry G. Poulos,et al.  Analytical Prediction for Tunneling-Induced Ground Movements in Clays , 1998 .

[4]  J. R. Booker,et al.  Surface settlements due to deformation of a tunnel in an elastic half plane , 1996 .

[5]  Joost C. Walraven,et al.  Structural analysis of contact deficiencies in segmented lining , 2011 .

[6]  I. Hudoba,et al.  CONTRIBUTION TO STATIC ANALYSIS OF LOAD-BEARING CONCRETE TUNNEL LINING BUILT BY SHIELD-DRIVEN TECHNOLOGY , 1997 .

[7]  Zila Rinaldi,et al.  Structural behaviour of precast tunnel segments in fiber reinforced concrete , 2011 .

[8]  C Sagaseta,et al.  ANALYSIS OF UNDRAINED SOIL DEFORMATION DUE TO GROUND LOSS , 1987 .

[9]  C.B.M. Blom,et al.  Three-dimensional structural analyses of the shield-driven “Green Heart” tunnel of the high-speed line South , 1999 .

[10]  Jun Sheng Chen,et al.  Numerical study on crack problems in segments of shield tunnel using finite element method , 2009 .

[11]  Climent Molins,et al.  Experimental and analytical study of the structural response of segmental tunnel linings based on an in situ loading test. , 2011 .

[12]  S. Shen,et al.  Analysis of shearing effect on tunnel induced by load transfer along longitudinal direction , 2008 .

[13]  Yukinori Koyama,et al.  Present status and technology of shield tunneling method in Japan , 2003 .

[14]  Kazuyoshi Nishikawa.  Development of a prestressed and precast concrete segmental lining , 2003 .

[15]  Zhan Wang,et al.  Construction behavior simulation of a hydraulic tunnel during standpipe lifting , 2011 .

[16]  K. Park.  ELASTIC SOLUTION FOR TUNNELING-INDUCED GROUND MOVEMENTS IN CLAYS , 2004 .

[17]  Jun Sheng Chen,et al.  Study on inner force and dislocation of segments caused by shield machine attitude , 2008 .

[18]  Climent Molins,et al.  Experimental and analytical study of the structural response of segmental tunnel linings based on an in situ loading test. Part 2: Numerical simulation , 2011 .