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Title |
A Study on the Structural Stability of Prefabricated Strut for Ground Excavation Construction
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Authors |
이기선(Ki-Sun Lee) ; 김두환(Doo-Hwan Kim) ; 송관권(Kwan-Kwon Song) ; 김성필(Seong-Pil Kim) ; 김정훈(Jeong-Hoon Kim) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.3.075 |
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Keywords |
고강도 ; 조립식 버팀보 ; 좌굴 안정성 ; 시공성 High strength ; Prefabricated Strut ; Buckling stability ; Constructibility |
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Abstract |
In study, Structural stability was considered when applying the high strength strut method with improved general strut method. considered whether there is sufficient stiffness to so as not buckling to the maximum hypothetical earth pressure. also structure stability of the strut component was reviewed. The high strength strut method is a technique used in place of the general strut method. high strength prefabricated Strut method is a technique that has bolt holes drilled in the upper flange at regular intervals. As a result of the buckling analysis, it was considered that the safety factor increased by about 5 %. also Since the stress generated is below the allowable stress, it is judged that structural stability of the strut is ensured. In particular, the safety factor of axial compressive stress increases about 16 % with use of high strength steel when applying the high strength prefabricated strut method. the high strength strut method is construction method may shorten the construction period and there is no expense to purchase additional materials.
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