针对建在宽阔河谷坝址的拱坝因服役多年存在的缺陷或受损问题,提出了可行的加固工程措施和一系列加固方案。结合工程实例,给出了系统的计算数据。研究表明,通过具体的加固措施和调整下游面温度可改善大坝的应力-应变状态,提高整体结构的安全性。 Aiming at the defects or damage problems of the arch dam built at the broad valley dam site for years of service, some feasible reinforcement measures and a series of reinforcement schemes are put forward. With the engineering example, the calculation data of the system is given. The research shows that the stress-strain state of the dam can be improved and the safety of the whole structure can be improved through the concrete reinforcement measures and the adjustment of the downstream surface temperature.