棉花滩碾压混凝土重力坝裂缝计阶跃函数监控模型  

Step Function Monitoring Model of Fissure Meter for Mianhuatan RCC Gravity Dam

作　　者：杨金凯[1,2,3] 包腾飞[1,2,3] 朱凯[2,3] 蔡婷婷[2,3] 康业渊[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]河海大学水利水电学院,江苏南京210098 [3]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

出　　处：《水电能源科学》2013年第10期67-69,128,共4页Water Resources and Power

基　　金：国家自然科学基金青年科学基金资助项目(51209077);新世纪优秀人才支持计划基金资助项目(NCET-11-0628);国家重点实验室专项经费资助项目(2010585212);中国电力投资集团公司科技基金资助项目(2011-042-HHS-KJ-X)

摘　　要：针对混凝土重力坝监测效应量监测裂缝开合度过程线会出现突变问题,以棉花滩混凝土重力坝的裂缝开合度监测数据处理突变点为例,采用计算机删除突变点、识别跃变点并适当引入阶跃函数构建新的统计模型进行逐步回归分析,并对比分析常规模型与带有阶跃函数的模型的模拟结果,验证带有阶跃函数统计模型的优越性。结果表明,该方法拟合精度较高、效果良好,可用于解决类似工程问题。Monitoring process line of crack opening-closing degree will appear a sudden change when we monitor some effect quantities of roller compacted concrete gravity dams. Taking the crack opening-closing degree of monitoring data in Mianhuatan RCC gravity dam for an instance, stepwise regression analysis with a new statistical model in which step function is properly introduced, before this we use the computer program to delete jump points and identify jump points. Compared the simulation results of regression analysis on the basis of the conventional statistical model and the new sta- tistical model with step function, it verifies the superiority of the statistical model with step function. The results show lhat we can get a better fitting accuracy result with new statistical model, which can be used to solve similar engineering problems.

关 键 词：裂缝开合度 阶跃函数 突变点 碾压混凝土重力坝 安全监控 

分 类 号：TV698.11[水利工程—水利水电工程]