混凝土拱坝裂缝光纤监测网络的优化  

Optimization of Optical Fiber Monitoring Network for Crack Detection of Concrete Arch Dam

作　　者：陈洁[1,2,3] 包腾飞[1,2,3] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]河海大学水资源高效利用与工程安全国家工程研究中心,江苏南京210098 [3]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2013年第2期102-105,共4页Water Resources and Power

基　　金：新世纪优秀人才支持计划基金资助项目(NCET-11-0628);河海大学中央高校基本科研业务费基金资助项目(2012B07214)

摘　　要：在多成因相互作用下,混凝土拱坝裂缝的出现具有不可避免和随机的特点。为实现对混凝土拱坝裂缝进行全方位、有效的监测,提出了基于瑞利散射优化裂缝分布式光纤监测网络,在分析正交失效混凝土模型试验结果的基础上,得出采用多组交叉平行的组合传感光路监测拱坝裂缝的可行性,并用有限元软件对某拱坝进行应力分析,寻找可能出现裂缝的关键部位和重点部位,提出了优化拱坝裂缝光纤监测网络布设图。Under the effect of multi-causes,the cracks formation of concrete arch dam has characteristics of inevitability and randomness.To achieve a comprehensive and effective monitoring the cracks of concrete arch dam,distributed optical fiber monitoring network for crack detection are presented based on the Rayleigh scattering optimization.On the basis of analysis of orthogonal failure concrete model test,the multi-group cross-parallel combination of sensing paths is practical for the crack detection.Finite element method is applied to analyze the arch dam stress and identify the potential cracks in key parts of the arch dam.Finally,the optical fiber monitoring network structures are proposed to optimize the cracks of arch dam.

关 键 词：拱坝安全 光纤传感 裂缝监测 网络构型样式及优化 

分 类 号：TV698.1[水利工程—水利水电工程]