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    WU Yue-dong, LI Tong-da, DIAO Hong-guo, ZHANG Peng, WU Chun-bo. Development and application of a new embedded settlement gauge based on dual-pressure sensors[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(s1): 38-42. DOI: 10.11779/CJGE2017S1008
    Citation: WU Yue-dong, LI Tong-da, DIAO Hong-guo, ZHANG Peng, WU Chun-bo. Development and application of a new embedded settlement gauge based on dual-pressure sensors[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(s1): 38-42. DOI: 10.11779/CJGE2017S1008
    shu

    Development and application of a new embedded settlement gauge based on dual-pressure sensors

    • 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China;
      2. Geotechnical Engineering Research Center of Jiangsu Province, Nanjing 210098, China

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    • Received Date: November 27, 2016
    • Published Date: November 19, 2017
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      • Abstract
    • Since the traditional settlement plates have adverse effects on the construction with tedious operations, a new embedded settlement gauge based on the dual-pressure sensors is proposed. Based on the principles of transforming the measurement of ground settlement to that of variations on hydraulic pressure in a full-sealed system, the new embedded settlement gauge comprises a vertical sealed pipe, a standard pressure sensor and a core pressure sensor. Both laboratory and field tests are conducted to describe the detailed operation instructions, including calibration, installation and data collection. It is found that the new gauge is applicable with a precision of 2 mm and repetition error of 2 mm. Compared with the traditional settlement plate, it has several significant advantages: (1) It is embedded underground, thus there are no effects on construction; (2) The settlement can be measured only by reading the sensors, resulting in a high efficiency; (3) It can be employed to measure the post-construction settlement, leading to a low cost.
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      • References (9)
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