粘贴钢板法在普通钢筋混凝土连续箱梁加固中的应用

依托广澳高速公路广珠段坦尾互通A匝道桥、坦尾互通B线1号桥、跨番中公路特大桥的专项加固工程,针对钢筋混凝土连续箱梁裂缝密集的特点,对采用粘贴钢板法加固前后特征位置的正截面抗弯承载能力进行了对比分析。结果表明,粘贴钢板法可以提高正截面的抗弯承载能力,进而提高富余度和梁的安全性能。

Study on Application of Pasting Steel Plate Method in Reinforcing of Ordinary Reinforced Concrete Continuous Box Girder

Being relying on the strengthening project of Ramp A Bridge of Tanwei Interchange,No.1 Bridge of Line B of Tanwei Interchange,Special Large Bridge over passing Pan-zhong Highway of GuangZhu Section of Guang-Macao Expressway,according to the dense cracking characteristics of ordinary reinforced concrete continuous box girder,comparison analysis on the flexural bearing capacity of normal section has been carried out for the position of pasting steel plate between before and after the strengthening,the results have shown that the method of pasting steel plate could improve the flexural bearing capacity of normal section,and then increase the surplus degrees and improve safety performance of beams.