特大桥的单梁实体试验及性能评价

目前桥梁损伤劣化现象日益普遍和严重，很多桥梁虽早已出现病害，但却常年带“病”工作，潜伏着巨大的安全隐患。如不及时消除在用桥梁的安全隐患，必然会造成巨大的经济损失甚至危及人民的生命安全，造成恶劣的社会影响；而不合理的、过早的改造又会带来巨大的经济负担，同时还会带来交通中断等一系列社会问题。因此，对于结构损伤、承载力衰减的在役桥梁，迫切需要进行桥梁的损伤程度、承载潜力、安全储备即桥梁技术状况评定。其中桥梁承载力评定是桥梁技术状况评定的核心内容。

Single-beam Entity Test of Extra-large Bridge and Performance Evaluation

Presently the damage of bridges is becoming more common and serious. Many bridges work with disease year by year, which have great potential safety hazard. If the potential safety hazard of bridges is not eliminated in time, the great economic loss will be brought inevitably, even the life safety of people will be endangered. But illogical and premature reconstruction will bring heavy economic burden and a series of social troubles as traffic disruption. Therefore in allusion to present bridges with structural damage and bearing capacity attenuation, it is urgent to evaluate the technical status such as damage degree, load-bearing potential and safety stock of bridges, thereinto the carrying capacity evaluation is the core.