대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제44권2호
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  • Pages.203-214
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  • 2024
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  • 1015-6348(pISSN)
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  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
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현장시험을 통한 항만 구역 내 블록 포장의 침하 특성 분석

Analysis of Settlement Characteristics of Block Pavement in Port Through Field Tests

  • 하용수 (한국해양과학기술원 해양ICT.모빌리티연구부) ;
  • 김윤태 (부경대학교 해양공학과) ;
  • 오명학 (한국해양과학기술원 해양ICT.모빌리티연구부)
  • Ha, Yong-Soo (Korean Institute of Ocean Science and Technology) ;
  • Kim, Yun-Tae (Pukyong National University.Ocean engineering Department) ;
  • Oh, Myounghak (Korean Institute of Ocean Science and Technology)
  • 투고 : 2023.12.27
  • 심사 : 2024.01.18
  • 발행 : 2024.04.01
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초록

항만은 노상 하부가 연약지반으로 구성되어 있으며, 빈번한 중하중 장비 운행에 따라 부등 침하, 균열 등의 포장 피해가 흔히 발생한다. 본 연구에서는 항만 콘크리트 블록을 개발하여 2가지로 구분되는 포장 단면으로 ◯◯항에 블록 포장을 시공하였으며, 포장체 성능 및 포장 표면에서 나타나는 침하 특성을 분석하였다. 포장체 성능을 분석하기 위하여 3회의 FWD 시험이 수행되었으며, 시간의 흐름에 따른 침하 특성을 분석하기 위하여 3회의 LiDAR 계측을 수행하였다. 시멘트 처리기층 단면의 블록 포장에 대해 시공 7개월 이후 수행된 FWD 시험에서 아스팔트 포장보다 더 낮은 처짐이 발생하여 상대 처짐비가 1보다 적게 나타났다. 이는 항만 운영에 따른 하부지반 안정화로 인해 블록 포장의 지지력이 향상되었기 때문이라고 판단된다. 전체 포장 단면의 침하 특성을 분석하기 위해 수행된 LiDAR 계측에서는 시공 초기 중장비 등의 상재하중으로 인해 쇄석기층 내 다수의 침하 구간이 확인되었다. 상대 처짐비와 LiDAR 계측 결과는 동일한 경향을 나타내었으며, 콘크리트 블록 포장의 높은 활용성과 시멘트 처리기층 단면의 지지력 향상 효과를 바탕으로 다양한 항만 부지에 널리 적용될 수 있을 것으로 판단된다.

Ports often suffer pavement damage due to soft ground and heavy equipment operations, leading to issues such as differential settlement and cracks. In this study, we developed port concrete blocks and applied them to a port in two configurations to figure out settlement characteristics. Falling weight deflectometer (FWD) tests on asphalt pavement and block pavements were conducted to figure out deflection and bearing capacity. The block pavement with the cement treated base showed improved bearing capacity with the port operation since lower settlements were detected than asphalt pavement. In the cement treated base, the relative deflection ratio to asphalt concrete pavement was less than 1, indicating enhanced bearing capacity. LiDAR measurements identified multiple settlements in the crushed-stone base due to surface loads after construction. Both relative deflection ratio and LiDAR measurements suggested that block pavement can be widely applied to various port sites with its applicability and bearing capacity of cement-treated base.

키워드

과제정보

This research was supported by Research service "ICT-based smart block development and application" funded by the Ministry of Oceans and Fisheries, Korea and Korea Institute of Marine Science & Technology Promotion (KIMST) funded by the Ministry of Oceans and Fisheries, Korea (20210659).

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