滁州市来安县塔山桥为6×15m石拱桥,矢跨比1/5,桥宽8m。原设计荷载:汽-15,挂-80;塔山桥加固根据平铰拱理论,将主拱圈按2平铰拱结构,腹拱圈转按3平铰拱结构计算,拱圈内力重分配后只需对拱顶进行加固处理,本项目采用波形钢加固主拱圈1/4～3/4范围,使全桥承载力达到预期效果。加固方法简单易行,在类似石拱桥的加固工程中能获得良好的加固效果和经济价值。 Laoshan Chuzhou Lai Shanxian Tashan Bridge 6 × 15m stone arch, pitch than 1/5, the bridge width of 8m. The original design load: steam -15, hanging -80; Tieshan Bridge reinforcement According to the flat hinge theory, the main arch by 2 flat hinge arch structure, belly arch ring turn 3 arch hinge arch structure calculation, after arch ring internal force redistribution Only need to reinforce the vault, the project uses corrugated steel reinforcement of the main arch 1/4 ~ 3/4 range, so that the full-bridge bearing capacity to achieve the desired results. Reinforcement method is simple and easy, in a similar stone arch reinforcement project can get good reinforcement effect and economic value.