| 不等跨连拱隧道衬砌结构可靠度及敏感性分析 |
| |
| 引用本文： | 邓建,韩斌. 不等跨连拱隧道衬砌结构可靠度及敏感性分析[J]. 地下空间与工程学报, 2005, 1(6): 841-844 |
| |
| 作者姓名： | 邓建 韩斌 |
| |
| 作者单位： | 中南大学资源与安全工程学院,长沙,410083;中南大学资源与安全工程学院,长沙,410083 |
| |
| 基金项目： | 中国科学院资助项目;湖南省杰出青年科学基金 |
| |
| 摘 要： | 应用基于神经网络的随机有限元，把截面抗压强度条件视为承载能力极限状态，进行某高速公路不等跨连拱隧道衬砌结构可靠度分析，得出了衬砌结构可靠指标的分布规律和衬砌结构的概率破坏规律。进行衬砌结构可靠度对随机变量的敏感性分析，得出随机变量的分布类型与变异系数对可靠指标的影响规律。结论对隧道设计与施工具有参考价值。
|
| 关 键 词： | 不等跨连拱隧道 衬砌 可靠度 敏感性分析 |
| 文章编号： | 1673-0836(2005)06-0841-03 |
| 修稿时间： | 2005-08-05 |
Reliability and Sensitivity Analysis of Unequal Double-arch Tunnel Lining Structures |
| |
| DENG Jian,HAN Bin. Reliability and Sensitivity Analysis of Unequal Double-arch Tunnel Lining Structures[J]. Chinese Journal of Underground Space and Engineering, 2005, 1(6): 841-844 |
| |
| Authors: | DENG Jian HAN Bin |
| |
| Abstract: | A neural network-based model for reliability analysis of unequal double-arch tunnel lining structure was proposed to represent the serviceability performance function.The Monte-Carlo simulation in combination with neural network technique was used to calculate the reliability index of tunnel lining structure.The reliability index in case of normal distributions is bigger than that when all the random variables are assumed to be lognormal distributions.Relationship between reliability index and random variable's coefficient of variance was also investigated.The results show that the coefficient of variance of elastic modulus exerts the greatest influence on the reliability index of tunnel lining structure. |
| |
| Keywords: | unequal double-arch tunnel lining structures reliability analysis sensitivity analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
