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Title |
Remaining Service Life Estimation Model for Reinforced Concrete Structures Considering Effects of Differential Settlements
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Authors |
이상훈(Sang-Hoon Lee) ; 한선진(Sun-Jin Han) ; 조해창(Hae-Chang Cho) ; 이윤정(Yoon Jung Lee) ; 김강수(Kang Su Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2020.24.1.133 |
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Keywords |
철근콘크리트; 잔존수명; 부등침하; 각변위 reinforced concrete; remaining service life; differential settlement; angular distortion |
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Abstract |
Korea Infrastructure Safety and Technology Corporation (KISTEC) specifies that the safety inspection and precise safety diagnosis of concrete structures shall be conducted in accordance with the 'Special Law on Safety Management of Infrastructure'. The detailed safety inspection and precise safety diagnosis guidelines presented by KISTEC, however, gives only the grade of members and structures, and thus it is impossible to quantify remaining service life (RSL) of the structures and to quantitatively reflect the effect of differential settlements on the RSL. Therefore, this study aims to develop a RSL evaluation model considering the differential settlements. To this end, a simple equation was proposed based on the correlations between differential settlements and angular distortion, by which the angular distortion of structures was then reflected in nominal strengths of structural members. In addition, the effects of the differential settlements on the RSL of structures were analyzed in detail by using the safety diagnosis results of actual concrete structure.
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