In this paper, the intensity of the piers is calculated and their safety reservation analyzed in order to guide and improve CWR design so as to increase safety and save cost.

• 有关“结构的设计安全储备是否应该大幅度提高”的争论作为工程建设界的热点 ,已经持续了五年 ,各方意见不尽相同 ,有的甚至针锋相对。