›› 2015, Vol. 36 ›› Issue (1): 286-292.doi: 10.16285/j.rsm.2015.01.039

• Testing Technology • Previous Articles     Next Articles

Study of nonlinear response of miniature earth pressure transducer in centrifugal force field

WEI Yong-quan1, 2，LUO Qiang1，ZHANG Liang1，LIU Gang1，ZHANG Li-xiang1，WENG Jun-qi1   

  1. 1. MOE Key Laboratory of High-speed Railway Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China; 2. Anhui Transport Consulting & Design Institute Co., Ltd., Hefei, Anhui 230088, China
  • Received:2013-08-14 Online:2015-01-12 Published:2018-06-13

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Abstract: Matching error can come from the interaction between earth pressure transducer and soil in centrifugal field. To grasp it, characteristics of nonlinear response and main affect factors in high modulus soil are examined with the tests of liquid calibration and the tests of calibration for soil in centrifugal field with the matching error theory. Test results show that the calibration for liquid indicates that the response of the miniature earth pressure transducer is highly linear. The calibration for soil in centrifugal field indicates that the significant nonlinear response of the miniature earth pressure transducer is caused by the change of soil modulus in the loading process. Nonlinear correction of test data with the nonlinear expression can significantly improve the accuracy of the miniature earth pressure transducer in high modulus soil. The nonlinear expression is established between the matching error and the modulus of soil.

Key words: miniature earth pressure transducer, centrifugal force field, high modulus soil media, matching error, nonlinear response

CLC Number: 

  • TU 432
[1] LIANG Shu-xiu , SUN Zhao-chen , ZHANG Wei-ping , WANG Xing-gang，. Nonlinear dynamic response of pile structure under earthquake loading [J]. , 2016, 37(5): 1259-1267.
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[5] ZENG Hui，YU Shang-jiang. Characteristics of matching error of rock-soil pressure transducer [J]. , 2004, 25(12): 2003-2006.
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