总结了近十年来混凝土桥梁耐久性的研究进展，并从环境、材料、构件、和结构四个层次上论述了混凝土桥梁耐久性的研究现状。
The status in quo of the durability research of concrete bridge is presented in three levels of material, element, and structure.
混凝土斜拉桥以其耐久性好、造价和维护费用相对较低等优势已成为大跨桥梁结构中极具有竞争力的桥型。
Concrete cable-stayed bridge is a competitive structural system in the long-span bridge family in virtue of its good performance such as durability, low cost of construction and maintenance, etc.
运营中的大跨径预应力混凝土梁桥箱梁普遍开裂，严重影响了桥梁结构的安全性和耐久性，造成了桥梁过早的失效和破坏。
The long-span prestressed concrete beam bridge is likely to craze in operation, which decreases the bridge's safety and durability and then leads to its structure's early failure and destruction.
运营中的大跨径预应力混凝土梁桥箱梁普遍开裂，严重影响了桥梁结构的安全性和耐久性，造成了桥梁过早的失效和破坏。
The long-span prestressed concrete beam bridge is likely to craze in operation, which decreases the bridge's safety and durability and then leads to its structure's early failure and destruction.
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