Study On When To Romove The Shoring Beneath The R.C. Slabs And Beams

• Main Authors: Chun Chieh Huang, 黃俊傑
• Other Authors: 黃玉麟
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/46439125866585562902

碩士 === 國立中興大學 === 土木工程學系 === 87 === When to remove the shoring beneath the slabs and beams depends on whether the beam and slab structures have developed into a status which they are able to take all the gravity loads or not. In this study, the timing to remove the shoring is studied by both developments of concrete strength and structure strength. The method of study includes numerical analysis and experiments. The research results indicate that in the first 28 days the development of the structure stiffness can be considered the development of the elasticity of the concrete numerical analysis. The values of the structure stiffness in experiments are a bit greater than those in numerical analysis but both developing rates are very similar. It is recommended that one more choice to decide the removal timing is to refer to the of the structure stiffness. A simple way to perform experiments to measure the stiffness value is suggested herein.