摘要
混凝土梁体上的裂缝对结构耐久性是有影响的，它也是决定混凝土结构耐久性状态的一个指标。依混凝土裂缝宽度对混凝土结构耐久性影响的模糊特性，建立了裂缝宽度隶属耐久性失效的隶属函数，提出了结构耐久性失效的模糊概率计算方法，并建议了结构耐久性状态的划分标准；针对混凝土桥梁裂缝发生、发展的随机性，以裂缝的发生服从非稳态的泊松过程假设为前提。
The cracks on concrete bridges affect the structure durability,and they are also the index that determines the durability state of concrete structures.Based on the fuzzy feature that the concrete crack width affects the concrete structure durability,the membership function that the crack width belongs to the durability failure is established,the calculation method of fuzzy probability about structure durability failure is submitted,and the classifying standard of the structure durability state is proposed.In accordance with the stochastic nature that the cracks occur and grow on the concrete bridges,and by assuming that the crack occurrence obeys the nonstable Poission process,a predicting and evaluating method about future crack condition and durability state of concrete bridge structures has been suggested.
出处
《铁道学报》
EI
CAS
CSCD
北大核心
1997年第4期90-98,共9页
Journal of the China Railway Society
关键词
混凝土桥梁
裂缝
耐久性
评估
concrete bridge
crack
durability
evaluation
