一、横桥向在满足承载能力情况下的单孔和连孔拱桥均可不予加固。只有当单孔的宽跨比小于1/20情况下,可根据计算结果考虑是否加固。二、顺桥向 (一) 单孔拱桥当单孔拱桥满足承载能力要求时,8°及8°以下的拱桥均可不予加固。但对下述拱 First, the cross-bridge to meet the carrying capacity of single hole and even hole arch bridge may not be reinforced. Only when the width to span ratio of single hole is less than 1/20, the reinforcement can be considered according to the calculation results. Second, the bridge to the (A) single-hole arch bridge When a single-hole arch bridge to meet the requirements of carrying capacity, 8 ° and 8 ° of the arch bridge may not be reinforced. But on the arch below