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| 抗力分项系数双重迭代求解算法 | |
| 引用本文： | 闫磊, 张雪林, 贺拴海. 抗力分项系数双重迭代求解算法[J]. 交通运输工程学报, 2011, 11(3): 1-5. doi: 10.19818/j.cnki.1671-1637.2011.03.001 |
| 作者姓名： | 闫磊 张雪林 贺拴海 |
| 作者单位： | 1.长安大学 公路学院, 陕西 西安 710064;;2.诸城市交通运输局, 山东 诸城 262200 |
| 基金项目： | Scientific Research of National West Communications Construction(2007 31882221); Fundamental Research Fund for Central University (CHD2009JC017) |
| 摘 要： | 分析了映射变换法与插值法的嵌套循环特性, 提出了抗力分项系数的双重迭代求解算法, 应用VB编制了计算程序, 计算了活恒载效应比为0.10、0.25、0.50、1.00、1.50、2.50六种工况下的构件抗力分项系数, 将分项系数乘以荷载效应组合值后得到修正抗力值, 针对修正抗力与荷载效应进行了可靠指标校核验算。计算结果表明: 应用双重迭代算法求得构件的可靠指标均大于目标可靠指标, 汽车一般运营状态下构件的可靠指标计算值与目标值的相对误差在0.62%~0.92%之间, 汽车密集运行状态下两者相对误差在0.62%~0.74%之间, 说明双重迭代算法计算结果可靠, 且偏于安全。 |
| 关 键 词： | 桥梁工程 抗力分项系数 双重迭代算法 修正抗力 可靠度 |
| 收稿时间： | 2010-12-22 |
Double iteration solving method of resistance partial factor |
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| YAN Lei, ZHANG Xue-lin, HE Shuan-hai. Double iteration solving method of resistance partial factor[J]. Journal of Traffic and Transportation Engineering, 2011, 11(3): 1-5. doi: 10.19818/j.cnki.1671-1637.2011.03.001 | |
| Authors: | YAN Lei ZHANG Xue-lin HE Shuan-hai |
| Affiliation: | 1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China;;2. Transportation Bureau of Zhucheng, Zhucheng 262200, Shandong, China |
| Abstract: | The characteristics of nested loop for reflection transformation method and interpolation method were analyzed,a double iteration solving method of resistance partial factor was presented,and its program was designed by using VB.The resistance partial factors of bridge components were calculated when the effect ratios of living load to dead load were 0.10,0.25,0.50,1.00,1.50,2.50.The resistance was modified by multiplying load effect combination value by resistance partial factor,and the corresponding relia... |
| Keywords: | bridge engineering resistance partial factor double iteration method modified resistance reliability |
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