Evaluation of Dynamic Resistance for Application of Portable In-situ Device to Extra Target Depth

Sang Yeob Kim; Jong Sub Lee; Geunwoo Park; Won Taek Hong

doi:10.1007/s12205-022-2031-z

Evaluation of Dynamic Resistance for Application of Portable In-situ Device to Extra Target Depth

Sang Yeob Kim, Jong Sub Lee, Geunwoo Park, Won Taek Hong

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The strength profiles of the subgrade must be assessed for the prediction and prevention of geo-hazards. This study aimed to evaluate the dynamic resistance (q_d) for the application of an instrumented dynamic cone penetrometer (IDCP). An IDCP test and a cone penetration test (CPT) were conducted at an equivalent site up to the extra target depth. The dynamic cone penetration index (DCPI), N-value (N_IDCP), and q_d were estimated from the IDCP test, and the static resistance (q_c) was measured from the CPT. The test results show that the DCPI, N_IDCP, and q_c can be used to detect the loose and hard layers; however, the N_IDCP might underestimate the strength profile in an extra target depth owing to the excessive energy loss. However, q_c has a linearly proportional relationship with q_c, which considers the transferred driving energy at the cone tip. Thus, the q_d estimated from the IDCP test can be used for reliable strength assessment at the extra target depth.

Original language	English
Pages (from-to)	4195-4201
Number of pages	7
Journal	KSCE Journal of Civil Engineering
Volume	26
Issue number	10
DOIs	https://doi.org/10.1007/s12205-022-2031-z
Publication status	Published - 2022 Oct

Keywords

Dynamic resistance
Energy loss
Extra target depth
Instrumented dynamic cone
penetrometer
Static resistance

ASJC Scopus subject areas

Civil and Structural Engineering

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10.1007/s12205-022-2031-z

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title = "Evaluation of Dynamic Resistance for Application of Portable In-situ Device to Extra Target Depth",

abstract = "The strength profiles of the subgrade must be assessed for the prediction and prevention of geo-hazards. This study aimed to evaluate the dynamic resistance (qd) for the application of an instrumented dynamic cone penetrometer (IDCP). An IDCP test and a cone penetration test (CPT) were conducted at an equivalent site up to the extra target depth. The dynamic cone penetration index (DCPI), N-value (NIDCP), and qd were estimated from the IDCP test, and the static resistance (qc) was measured from the CPT. The test results show that the DCPI, NIDCP, and qc can be used to detect the loose and hard layers; however, the NIDCP might underestimate the strength profile in an extra target depth owing to the excessive energy loss. However, qc has a linearly proportional relationship with qc, which considers the transferred driving energy at the cone tip. Thus, the qd estimated from the IDCP test can be used for reliable strength assessment at the extra target depth.",

keywords = "Dynamic resistance, Energy loss, Extra target depth, Instrumented dynamic cone, penetrometer, Static resistance",

author = "Kim, {Sang Yeob} and Lee, {Jong Sub} and Geunwoo Park and Hong, {Won Taek}",

note = "Funding Information: This work is supported by Smart City R&D project of the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 22NSPS-B149830-05), by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 22CTAP-C164152-02). Publisher Copyright: {\textcopyright} 2022, Korean Society of Civil Engineers.",

year = "2022",

month = oct,

doi = "10.1007/s12205-022-2031-z",

language = "English",

volume = "26",

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journal = "KSCE Journal of Civil Engineering",

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AU - Kim, Sang Yeob

AU - Lee, Jong Sub

AU - Park, Geunwoo

AU - Hong, Won Taek

N1 - Funding Information: This work is supported by Smart City R&D project of the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 22NSPS-B149830-05), by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 22CTAP-C164152-02). Publisher Copyright: © 2022, Korean Society of Civil Engineers.

PY - 2022/10

Y1 - 2022/10

N2 - The strength profiles of the subgrade must be assessed for the prediction and prevention of geo-hazards. This study aimed to evaluate the dynamic resistance (qd) for the application of an instrumented dynamic cone penetrometer (IDCP). An IDCP test and a cone penetration test (CPT) were conducted at an equivalent site up to the extra target depth. The dynamic cone penetration index (DCPI), N-value (NIDCP), and qd were estimated from the IDCP test, and the static resistance (qc) was measured from the CPT. The test results show that the DCPI, NIDCP, and qc can be used to detect the loose and hard layers; however, the NIDCP might underestimate the strength profile in an extra target depth owing to the excessive energy loss. However, qc has a linearly proportional relationship with qc, which considers the transferred driving energy at the cone tip. Thus, the qd estimated from the IDCP test can be used for reliable strength assessment at the extra target depth.

AB - The strength profiles of the subgrade must be assessed for the prediction and prevention of geo-hazards. This study aimed to evaluate the dynamic resistance (qd) for the application of an instrumented dynamic cone penetrometer (IDCP). An IDCP test and a cone penetration test (CPT) were conducted at an equivalent site up to the extra target depth. The dynamic cone penetration index (DCPI), N-value (NIDCP), and qd were estimated from the IDCP test, and the static resistance (qc) was measured from the CPT. The test results show that the DCPI, NIDCP, and qc can be used to detect the loose and hard layers; however, the NIDCP might underestimate the strength profile in an extra target depth owing to the excessive energy loss. However, qc has a linearly proportional relationship with qc, which considers the transferred driving energy at the cone tip. Thus, the qd estimated from the IDCP test can be used for reliable strength assessment at the extra target depth.

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Evaluation of Dynamic Resistance for Application of Portable In-situ Device to Extra Target Depth

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Keywords

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