摘要
根据现有文献资料,对影响钢闸门结构构件抗力衰减的主要因素钢材锈蚀进行了统计分析,得到了锈蚀规律。在此基础上,进一步分析得到了闸门构件抗力的衰减模型。并以受弯构件为例,对)(tj是确定性函数和随机变量、荷载是时不变和时变情况的可靠度进行了分析计算,从而为现役闸门结构使用年限的预测和维修加固奠定了基础。这些工作目前在国内还是首次。
Based on the available information and data about steel corrosion, the main factors influencing the decaying resistance of steel gate structural members are analyzed and a law of corrosion was derived. A model of decaying resistance of gate structural members was proposed. The reliability indices of bending structural member were analyzed and calculated with the consideration of determined ψ(t) or random variable ψ(t) and time-invariant loads or time-variant loads. The present research work can serve as the basis of the service life prediction of existing gate structures as well as the basis of maintenance and consolidation of existing gate structures.
出处
《工程力学》
EI
CSCD
北大核心
2003年第4期104-109,共6页
Engineering Mechanics
关键词
钢闸门结构
抗力模型
钢材锈蚀
时变可靠度
Corrosion resistance
Forecasting
Reliability
Service life
Steel corrosion
Steel structures
