• Title/Summary/Keyword: J-Type Hook Bolts

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Performance Evaluation of the Cast-in-place Anchor Bolt in Non-cracked Concrete used in Power Plant Facilities (비균열 콘크리트에 매립된 발전설비 정착부 선 설치 앵커의 구조성능 평가)

  • Kim, Dong-Ik;Jong, Woo-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.11
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    • pp.250-258
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    • 2019
  • The seismic performance and stability of operating facilities installed in domestic power plants need to be verified because of the increased incidence of earthquakes resulting in power plant damage due to the overturning failure of electric operating facilities. In this study, a structural performance evaluation of the anchor bolts constructed to setup the operating facilities on concrete slabs was carried out through an on-site inspection of power plants, called Daechung-Dam. M10 J hook and M12 J hook anchor bolts were installed in the field unit. According to the ASTM E 488-96 specifications, anchor bolt pullout and shear tests were carried out and compared with the anchor-bolt design standards. The results from the tension and shear pullout tests showed that the M10 and M12 J hook anchor bolts had higher performance than the required design load. Thus, they were found to be safe enough. Nevertheless, more research in the field of analytical study will be needed in the near future.

Structural Performance of the Cast-in-place Anchor in Cracked Concrete used in Power Plant Facilities (균열 콘크리트에 매립된 발전설비 현장설치용 선 설치 앵커의 구조성능 평가)

  • Kim, Dong-Ik;Jung, Woo-young
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.23 no.7
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    • pp.120-128
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    • 2019
  • It is very important to verify the seismic performance and stability of the power plant fixture in the domestic power plant, because earthquakes have increased in frequency around the world which resulted in the frequent occurrence of power plant damage caused by the failure of electric power facilities. In this study, through the on-site inspection of power plant fixation unit installed in domestic power plants, we carried out structural performance evaluation of the fixation unit anchor bolts installed on the concrete slabs. The field survey showed M12 J hook anchor bolts were used. Anchor bolt pullout and shear performance evaluation were performed based on ASTM E 488-96 standard. Moreover, artificial crack with the width of 0.5 mm was applied during the experiment based on ATM355.4 and ETAG 001. The comparison of M12 J hook anchor bolt pullout and shear test result to design value required in domestic and international design standard, show a satisfactory result. M12 J hook anchor pullout and shear performance was found to be about 35% and 7%, respectively, higher than the required design value.