| 요약2 |
Reshoring makes slab deflect and support its own weight. The construction loads on the slabs in lower levels decrease using the reshoring. Simplified analysis proposed by ACI 347.2R-05 showed that if the reshoring is applied, construction loads on slabs and shores, and quantities of forms and shores decreased by 40%, 23%, 40%, and 50%, respectively. Shores' loads were comparatively measured on site. The measured reshore load was half of the load before removing the shores and it was reduced by 35% compared with the measured shore load. To verify the safety of the reshoring, deflections of beams and strains of longitudinal beam bars were also measured. The maximum deflection was only L/5,000 and the maximum strain was only 3.6% of the yield strain. Consequently, reshoring does not cause problems on the safety or serviceability. In addition, the beam load was expected from the measured shores' loads and it well coincides with the predicted value by the ACI 347.2R-05 simplified analysis. |