连续梁桥顶升施工关键技术研究

对多跨连续梁桥顶升施工的方法、原理、关键技术进行了研究.垫石加高顶升和截柱顶升两种方法成功应用于原北江大桥引桥的顶升施工中,保证了工程质量,工期缩短、过程顺利安全、成本降低、污染大大减少,保护了生态环境,创造了很好的经济效益和社会效益,并积累了宝贵的施工经验.可以为同类型的桥梁顶升施工提供经验借鉴.

Research on Key Techniques of Continuous Beam Bridge Jacking Construction

In this paper, methods, principles and key technology for multi -span continuous beam bridge jack- ing construction have been discussed. Cushion stone lifting and shafts cut jacking methods have been successfully used in the jacking construction of the approach of old Beijiang Bridge, which could ensure project quality, shorten the construction period, ensure the process smooth and safe, reduce costs, greatly reduce pollution and protect the ecological environment with a good economic and social benefits, as well as valuable experience in construction being obtained, which can provide references for similar bridge jacking construction.