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对某15孔片石混凝土拱桥的病害情况进行介绍,并对其病害成因进行分析和总结。早期施工质量差,材料强度低,桥面排水措施不当,重车、超重车频繁,结构体系自身的次内力作用等,是导致片石混凝土拱桥发生病害的主要原因。针对桥梁的病害情况,提出全桥的维修加固设计方案。选择截面增大法,对拱桥腹拱圈进行加固。并对其他附属构件,提出维修加固的措施。
The disease situation of a 15-hole stone-slab concrete arch bridge is introduced, and the cause of the disease is analyzed and summarized. Early construction quality is poor, the material strength is low, the bridge deck drainage improper measures, heavy trucks, heavy trucks frequent, structural system itself secondary internal force, which is the main reason leading to the disease of stone-slab concrete arch bridge. Aiming at the condition of the bridge, the design plan of the whole bridge is put forward. Select cross-section increase method, arch arch circle arch reinforcement. And other auxiliary components, put forward measures to repair and reinforcement.