摘要
通过考虑桩基失效具有随机性和模糊性,引入模糊数学的相关理论,将桩基沉降率作为模糊随机变量,对42组武汉地区预应力混凝土管桩试桩试验数据进行了模糊统计分析,确定了隶属函数,假定沉降率的概率分布,运用模糊事件的概率原理,得出了概率计算公式及可靠性指标计算方法,为工程实践中预应力管桩失效的评判提供参考。
Considering the randomness and fuzziness of the failure of piles, the settlement rate of piles is taken as a fuzzy random variable by using related theory of fuzzy mathematics. The membership function is determined by fuzzy statistical analysis of 42 static load tests of prestressed concrete pipe piles in Wuhan area. The probability formula and the calculation method of reliability index are derived by assuming the probability distribution of settlement rate and using the probability theory of fuzzy event. It provides reference for the judgment of failure of piles in engineering practice.
出处
《岩土工程技术》
2006年第4期194-196,共3页
Geotechnical Engineering Technique
基金
湖北省自然科学基金项目(2005ABA303)
湖北省科技攻关项目(2002AA301C93)
关键词
预应力混凝土管桩
模糊理论
随机方法
可靠性
prestressed concrete pipe piles
fuzzy theory
random method
reliability
