A study on Reinforcement Methods to Improve the Usability of the H-beam Backfill Installation Part in Top-Down Construction Method

역타공법 뒷채움재 설치 구간의 사용성 개선을 위한 보강 방안 연구

Recently, structural damage and defect has occurred in the H-beam backfill installation part of Top-Down construction method. In order to secure structural safety and usability in the adjacent section of the backfilling method, It turns out that it is necessary to analyze by dividing into various cases. The H-beam backfill installation section is divided into the case of adding a vertical plate inside the slab, adding a shear stud, adding a reinforcing bar, changing the thickness of the pressure plate, and filling the H-beam backfill with mortar. Ansys modeling was performed and an appropriate solution was suggested by analysis.