钢桁梁桥加固方案的探讨

On the reinforcement of steel thruss girder bridge

针对二十世纪六七十年代修建的钢桁梁桥,因修建年代早,荷载等级低,不能满足现在交通需求的问题,结合工程实践,提出了五种加固方案,并逐一分析了每种加固方案在工程造价、工期、技术难度、养护等方面的优缺点。

As the steel thruss girder bridge built in 1960s or 1970s are too low in loading capacity to satisfy the present transportation requirements because of the early building time, it puts forward five reinforcement plans combined with practice, and analyses the advantages and disadvantages of this plan in cost, construction period, technical difficulties and maintenance.