| 结构可靠度分析的一种实用方法及其时变预测 |
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| 引用本文： | 杨志刚,李友辉,张立翔.结构可靠度分析的一种实用方法及其时变预测[J].江西水利科技,2002,28(1):5-8. |
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| 作者姓名： | 杨志刚 李友辉 张立翔 |
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| 作者单位： | 1. 昆明理工大学,云南,昆明,650051
2. 江西省水利科学研究所,江西,南昌,330029 |
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| 摘 要： | 一次二阶矩方法是传统的可靠度方法，其精度受到验算点处极限状态方程非线形程度影响，将功能函数泰勒展开至二次项，形成二次二阶矩方法可提高可靠度精度，考虑验算点法在计算时要求进行不断迭代，为此在满足设计精度要求的前提下，提出不需迭代的一次性设计点直接进行可靠度计算，从而大大减少计算工作量，对结构在整个使用期内可靠度风险性随机预测，基于灰色理论，建立GM优化模型，求出结构时变可靠度。
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| 关 键 词： | 结构可靠度 二次二阶矩实用方法 时变预测 |
| 文章编号： | 1004-4701(2002)01-0005-04 |
| 修稿时间： | 2001年7月25日 |
A PRACTICAL METHOD OF STRUCTURAL RELIABILITY ANALYSIS AND ITS TIME-VARYING PREDICTION |
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| YANG Zhi gang ,LI You hui ,ZHANG Li xiang.A PRACTICAL METHOD OF STRUCTURAL RELIABILITY ANALYSIS AND ITS TIME-VARYING PREDICTION[J].Jiangxi Hydraulic Science & Technology,2002,28(1):5-8. |
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| Authors: | YANG Zhi gang LI You hui ZHANG Li xiang |
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| Affiliation: | YANG Zhi gang 1,LI You hui 2,ZHANG Li xiang 1 |
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| Abstract: | The first order second moment method is a traditional reliability analysis method .Its accuracy is influenced by unlined situation of the mathematical dot in limited state equation. Developing the performance function to the second order, the second order second moment method can improve the reliability accuracy. In order to reduce the large duplicated calculation in the mathematical dot method,this paper proposed a regular design dot method,which can not only calculate the reliability directly and effectively, but also be satisfied with the requirement. Considering the reliability risk prediction during the whole structural living time and based on the gray system theory, a GM optimize method is built and then the structural reliability is calculated. |
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| Keywords: | Reliability The second order second moment method Time varying prediction |
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