JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2009, Vol. 39 ›› Issue (3): 129-134.

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The strain measurement techniques based on the static resistive strain gauge and optical fiber strain sensor and their applications in geo-mechanical model tests

  

  1. LI Yong,ZHU Wei-shen, LI Shu-cai, ZHANG Qiang-yong, WANG Han-peng：Geotechnical ＆ Structural Engineering Research Center, Shandong University, Jinan 250061, China;
    YANG Qiang：Jinan Highway Administration Bureau, Jinan 250013, China
  • Received:2008-10-29 Online:2009-06-16 Published:2009-06-16

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Abstract:

Combined with the technologies used in the 3D geomechanical model test of the Baziling branchingout tunnel, how to apply the two strain measurement technologies to the geomechanical model tests and how to get the values and angles of the principle stress of the measuring points through the received monitoring data of strain were given. Then, the tests measuring results were compared with the numerical simulation results, which were found to be in good agreement. The tests results proved that better experimental data could only be obtained by the combination of resistive strain measuring and optical fiber strain measuring.

Key words: static resistive strain measuring; optical fiber strain measuring; geo-mechanical model test; numerical simulation; geotechnical engineering

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