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裂缝是混凝土构件普遍存在的一种现象,铁路桥梁、隧道、涵洞的裂缝屡见不鲜,裂缝的出现,降低结构的防水性、耐久性和承载能力,也给结构的整体外观造成了不良影响。如何阻止或减缓裂缝的产生和发展以及裂缝出现后及时整治,并且不影响桥梁结构的安全和使用寿命,是一项严峻、紧迫而又复杂的系统工程。
Cracks are a common phenomenon in concrete structures. The cracks in railway bridges, tunnels and culverts are common, and the appearance of cracks and the waterproofing, durability and load carrying capacity of the structure also adversely affect the overall appearance of the structure. How to prevent or mitigate the occurrence and development of cracks and timely remediation after the occurrence of cracks, and does not affect the safety and service life of the bridge structure is a serious, urgent and complex system engineering.