沿海及跨海桥梁下部结构防腐与加固

Corrosion-Protection and Strengthening of Bridge Substructures along and over Sea

在桥梁建设期和长期运营阶段,下部结构的质量和安全关系到整个桥梁工程的成败。跨海工程通常要求设计基准期为100年,但由于海洋复杂的腐蚀环境,桥梁下部结构通常会遭到腐蚀并破坏,而且一旦破坏,维修工程较难实施,因而防腐和加固措施对于桥梁的"全寿命"至关重要。因此,探讨沿海及跨海大桥下部结构腐蚀的机理、防腐措施以及补强加固方案,对提高新建跨海、沿海大桥的耐久性是很有必要的。

The success or failure of the bridge engineering depends on the quality and the safety of substructure in the construction period and use stage. The design reference period of these projects over sea are usually 100 years. Bridge substructures are usually corroded and destroyed because of the complex ocean corrosion environment, and it is difficult to repair when the substructure is destroyed, thus, the corrosion- protection and strengthening of the substructure is very important to the life-cycle of the bridges. So it is necessary to enhance the durability of new bridges along and over sea by study the mechanism of the corrosion, the corrosion-protection measures and strengthening methods.