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    • 5. 发明专利
    • Device and method for detecting reaching of tip of cast-in-place pile at supporting layer
    • 用于检测支撑层中位置桩的提取的装置和方法
    • JP2010031576A
    • 2010-02-12
    • JP2008196161
    • 2008-07-30
    • Kajima Corp鹿島建設株式会社
    • TANAKA SHUNPEIFUJIMURA HIROSHIKANAZAWA HIROYUKIISHII SADAMIKOTAKI YUTAKAAYA MASANORITAKAHASHI TAKASHIFUKUI TSUTOMUKAMEYAMA KENICHIKOJIMA MASAKAZU
    • E02D33/00E02D5/34
    • PROBLEM TO BE SOLVED: To obtain a device and a method for detecting the reaching of a tip of a cast-in-place pile at a supporting layer, which can apply a ground elastic wave speed measurement method, called as PS logging, capable of measuring the hardness ground in a noncontact state for detecting whether or not the hole which has been bored for the preparation of a large-diameter cast-in-place pile reaches the supporting ground which supports the pile, without increasing especially vibrational energy, and which can conduct detection easily and securely only by installing a simple device.
      SOLUTION: A false measurement area is formed by installing a reflecting plate as a false ground surface 5 in proximity to measurement porous wall ground 2 along the measurement porous wall ground 2 of the hole of the large-diameter cast-in-place pile. Then a vibration source 4 is installed in proximity to the center position of the false measurement area, and geophones 6a and 6b are installed in a measurement position.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了获得一种用于检测在支撑层处的现浇桩的到达的装置和方法,其可以应用地弹性波速度测量方法,称为PS测井 能够测量非接触状态下的硬度地,用于检测用于制备大直径现浇桩的钻孔是否到达支撑桩的支撑地,而不增加特别是振动能 ,并且只要安装简单的装置即可方便,安全地进行检测。 解决方案:通过将反射板作为假地面5安装在测量多孔壁地面2附近,沿着大直径就地孔的测量多孔壁地面2形成假测量区域 桩。 然后将振动源4安装在假测量区域的中心位置附近,并将地震检波器6a和6b安装在测量位置。 版权所有(C)2010,JPO&INPIT