近年来,我们采用钢拉杆加固桥台后座,桥台翼墙,以及开裂的沉井和开裂的拱圈等,收到了良好的技术经济效果;感到这是一种费用较省,施工简易,受力明确,收效显著的桥梁局部加固方法。现将加固方法简述于后。一、用钢拉杆加固桥台后座修建双曲拱桥时,为了节省圬工,我们常采用分离式桥合。其后座的基础,一般设计在与拱座相同的高程上,且多系奠基于回填灌水捣实的河砂层上。为了进一步减少后座 In recent years, we have adopted the steel pull rod to reinforce the abutment, the abutment wing wall, the cracked caisson and the cracked arch ring, etc., which have received good technical and economic results. This is a more economical and simple construction, Force explicit, significant effect of local bridge reinforcement method. The reinforcement method is outlined below. First, the use of steel rod reinforcement abutment Backseat arch bridge construction, in order to save labor, we often use separate bridge. The base of the rear seat is generally designed on the same elevation as the abutment, and the multi-system is based on the sand layer of the backfill and tamping. In order to further reduce the back seat