基于支持向量机的大跨连续刚构桥可靠度分析

发布时间：2018-05-12 15:36

本文选题：支持向量机 + 可靠度　；参考：《交通科学与工程》2014年04期

【摘要】：针对大跨连续刚构桥在可靠性分析过程中功能函数不能显示、表达的问题,提出了一种基于支持向量机分类功能可靠度的计算方法。采用拉丁超立方抽样产生一定样本的数据库,通过改变样本点中效应数据的大小,并结合有限元程序的分析,找出一定精度下离分类面最近的一对样本点,从而得到新的样本库。然后,用新的样本库构造出一个SVM分类器函数。结合蒙特卡罗数值模拟,计算其失效概率。以四川某大跨连续刚构桥为例,验证了该方法的实用性。
[Abstract]:In order to solve the problem that the function of long-span continuous rigid frame bridge can not be displayed and expressed in the process of reliability analysis, a method of calculating the functional reliability based on support vector machine classification is proposed. Using Latin hypercube sampling to produce a certain sample database, by changing the size of the effect data in the sample points and combining with the finite element analysis program, we find out a pair of sample points nearest to the classification surface under certain precision. A new sample base is obtained. Then, a SVM classifier function is constructed with a new sample library. Combined with Monte Carlo numerical simulation, the failure probability is calculated. Taking a long span continuous rigid frame bridge in Sichuan as an example, the practicability of the method is verified.
【作者单位】：长沙理工大学土木与建筑学院;
【基金】：国家自然科学基金资助项目(50608009,51008036) 教育部新世纪优秀人才支持计划(NCET-10-0319) 交通部应用基础研究项目(2006319825070,2010318000006)
【分类号】：U448.23

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