Proceedings of the Korean Institute of Building Construction Conference (한국건축시공학회:학술대회논문집)

The Korean Institute of Building Construction (한국건축시공학회)
권호 표지

A Study of Change in Current Resistance Value of Electric Motor Requied for Ground Dilling

지반굴착에 소요되는 전기식모터의 전류저항값 변화에 관한 연구

  • 서동남 (우미건설(주) 센터포인트 강남개발 현장) ;
  • 정상훈 (우미건설(주) 품질기술팀) ;
  • 이상현 (우미건설(주) 센터포인트 강남개발 현장) ;
  • 신진섭 (우미건설(주) 건축기획팀) ;
  • 최상호 (큐엘엔지니어링)
  • Published : 2023.05.17
Download PDF
⟨ Previous Next ⟩

Abstract

In this application study, field pilot tests were performed to evaluate the validity of a proposed formula between the exerted electrical energy and SPT N-value based on the result of the basic study. Measurement sensors and recording system were developed to obtain exerted motor current and drilling depth in a field. By using the correlation formula proposed in the basic study, the measured motor current and boring speed were applied to predict SPT N-value and the predicted N-values were compared to SPT N-value of site exploration. From the comparisons it is verified that the exerted electrical energy to bore ground might be used to predict SPT N-value and pile tip location.

Keywords