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Title |
The Influence Factors on the Compensation of Column Shortening in Tall Buildings
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Authors |
문일원(Il-Won Mun) ; 최기봉(Ki-Bong Choi) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.1.208 |
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Keywords |
기둥축소량 ; 보정 ; 온도 ; 건조수축 ; 크리프 ; 탄성변형 ; 모니터링 ; 안정성 ; 사용성 Column shortening ; Compensation ; Temperature ; Shrinkage ; Creep ; Elastic deformation ; Monitoring ; Stability ; Serviceability |
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Abstract |
The causes of column shrinkage and the codes that have been studied up to now are discussed. The documents mentioned in the code deal with the drying shrinkage, creep, compressive strength and elastic modulus of the specimen, and the elastic deformation calculated from the structural analysis. However, the deformation due to the temperature caused by the long term monitoring is less than that caused by the factors generated by the previous studies. In the previous studies, it was found that dehydration shrinkage, creep, and elastic deformation were not considered for temperature-induced deformation, while for the specimen experiments, the temperature-related items were replaced with the humidity-related terms The compensation value by the proposed equation showed error of 4.9 mm in the upper direction and 1.0mm in the lower direction when calculating column shortening, and it was found that its value by the proposed equation almost coincided with the measurement value in Site. Therefore, it is necessary to further study the temperature that can be omitted in calculating the existing column shortening, to consider the influence factors, and to supplement the criteria for the temperature measurement of the structure as well as the specimen tests.
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