钢箱加固法在双曲拱桥加固中的应用研究

Study on Application of Steel Box Strengthening Method in Reinforcement of Double-curved Arch Bridge

钢箱加固法是一种新型的加固方法,其具有加固效果显著、施工方便、加固后结构整体稳定性好、抗扭刚度大等特点,特别适合于梁、拱式桥梁的主要构件加固。分析钢箱加固法加固桥梁的主要原理,并将其应用于双曲拱桥的加固。通过理论分析,并结合实验结果评估了桥梁的加固效果。分析结果表明:双曲拱桥采用钢箱法加固以后,其应力和挠度均得到较大的提高,取得了良好的加固效果,说明钢箱加固法可以用于双曲拱桥的加固。

Steel box strengthening method （SBSM ） is a new reinforcement method featured with remarkable effect ,conve-nient construction ,well whole-stability after reinforcing ,excellent torsion rigidity and so on ,especially ,it is fitted to re-inforce the structures such as beam and arch bridge .The dominant mechanism of bridge strengthening with the SBSM is analyzed here ,and it is applied to the consolidation of double-curved arch bridge .Besides ,the reinforced effect of the bridge is evaluated combined with the theoretical analysis and experimental results .The analysis results show that the double-curved arch bridge’s stress and deflection are improved prominently after reinforcing with the SBSM and the per-fect reinforcing effect is achieved .So the SBSM could be applied to double-curved arch bridge’s reinforcement .