The development of economy and the improvement of science and technology have made the construction of bridge in China develop at a rapid pace. The level of bridge construction in China has also leapt to the world advanced ranks. However, the bridge structural disease has been plagued by the majority of bridge builders. At present, there are many bridges exposed defects, and some have not far reached the design life of the phenomenon of severe degradation of the durability of the phenomenon, affecting its carrying capacity and service life. Therefore, the use of appropriate reinforcement and transformation of technical measures to restore and improve the carrying capacity of the bridge and the ability to extend the service life of the bridge to meet the needs of modern transport has become very urgent.%经济的发展和科技水平的提高,使我国的桥梁建设得到飞速发展,我国的建桥水平也已跃身世界先进行列.然而,桥梁结构性病害却一直困扰着广大桥梁建设者.目前,已有不少桥梁暴露出缺陷,更有一些在远没有达到设计寿命时出现耐久性能严重退化的现象,影响其承载能力和使用寿命.因此,采用适当的加固和改造技术措施,恢复和提高桥梁的承载能力及通行能力,延长桥梁的使用寿命,以适应现代化交通运输的需要变得十分迫切.
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