access plug and cap

In accordance with the overload failure problem of the manhole-cover, this paper studied failure reasons andreasonable methods to improve load carrying ability and security of manhole-cover with the analyzing software I-DEAS.

针对使用中常出现的检修孔盖超负荷失效问题,本研究以I-DEAS软件为分析工具,研究其失效原因及提高承载能力的结构改进设计,以增强其使用安全性。