轻轨高架桥墩顶帽开裂原因分析及加固措施

Cause analysis and reinforement measures of light rail overhead pierhood crack

通过检测某地铁高架区间既有轻轨桥墩顶帽及垫石开裂情况,分析了桥墩顶帽开裂的原因,并提出了四种可行的桥墩加固措施,同时分析了各种措施的优缺点,综合考虑强度、耐久性、外观、工期及费用等因素,最终选取了部分凿除、替换墩身的加固方案。

Through detecting existing light-rail bridge pier top a nd cushion cracking conditions of the s ubway viaduct intervals, the paper analyzes the bridge pier top cracking causes, puts forward four kinds of feasible bridge pier reinforcement m e a sures, analyzes their merits a nd defects, comprehensively considers strength, durability, appearance, construction schedule a nd cost and other factors, a nd finally selects the reinforce-ment scheme of partial removing replacing pier body.