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Impact Analyses for the Safety Checks of Used Wave Dissipation Concrete Block Considering Construction Phases

사용된 소파블록의 안전성 검토를 위한 시공단계별 충돌해석

  • Huh, Taik-Nyung (School of Civil, Environmental and Chemical Engineering, Changwon National University) ;
  • Choi, Chang-Ho (Department of Human Resources, Administration Bureau, Provincial Government of Gyeongnam)
  • 허택녕 (창원대학교 토목환경화공융합공학부) ;
  • 최창호 (경남도청 행정국 인사과)
  • Received : 2018.08.30
  • Accepted : 2018.10.05
  • Published : 2018.10.31

Abstract

Many harbor structures have been constructed, and some structures are now under construction in Korea, which is a peninsular state and a logistics hub in Northeast Asia. Expansions and extensions of existing harbors are also being planned to meet increasing natural disaster threats. Wave-dissipation concrete blocks are recycled or discarded based on the personal experience of engineers only, and there are no safety checks or criteria. To check the safety of used blocks, material evaluations were done by visual inspection of blocks on the ground and under water and from 20 non-destructive measurements of the rebound hardness test and 3 concrete core samples. Wave-dissipation blocks are sometimes fully or partially damaged in the process of transferring and mounting them or during construction. Therefore, a safety check is essential for recycling blocks with an evaluation of materials while considering the construction phases. To do this, a block was modeled with a 3D finite element method using ADINA, and impact analyses were done according to the transfer, mounting, and construction phases. From the results of the impact analyses and material evaluation, the safety checks and reasonable evaluation of used blocks were examined, and detailed construction methods are proposed. The methods are expected to maximize the reuse of used wave-dissipation blocks from an economical point of view.

Keywords

Construction Phase;Impact Analysis;Safety Check;3D Finite Element;Used-Armour Block

Acknowledgement

Supported by : 창원대학교

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