水利水电技术2018，Vol.49Issue(5)：38-43,6.DOI:10.13928/j.cnki.wrahe.2018.05.006
改进温度分量的拱坝变形时空分布模型
Improved temperature component-based spatio-temporal distribution model for arch dam deformation
摘要
Abstract
Through the study made on the hysteresis behavior of concrete arch dam deformation,the law of the influence from temperature effect on the displacement of the dam body is analyzed,while an arch dam deformation monitoring statistical model with improved temperature component is built up by introducing Rayleigh distribution function.Moreover,an improved temperature component-based spatio-temporal distribution model for arch dam is established through introducing spatial coordinates and considering the spatial continuity of deformation value.Due to more factors,the established monitoring model is parametrically optimized with both particle swarm optimization and stepwise regression analysis.Finally,the established spatio-temporal distribution model for arch dam deformation is applied to the deformation monitoring of an arch dam.The result shows that the number of the influencing factors is reduced,while the multi-correlation coefficient and the root-mean-square error are better than those of the conventional model,thus the accuracy of the established model is higher than that of the conventional dam deformation monitoring model with better fitting effect.关键词
拱坝变形/温度滞后效应/粒子群算法/逐步回归分析/时空分布模型Key words
archdam deformation/temperature hysteresis effect/particle swarm optimization/stepwise regression analysis/spatio-temporal distribution model分类
水利科学引用本文复制引用
沈晶鑫,郑东健..改进温度分量的拱坝变形时空分布模型[J].水利水电技术,2018,49(5):38-43,6.基金项目
国家自然科学基金(51279052,51579085) （51279052,51579085）
水文水资源与水利工程科学国家重点实验室研究项目(20145028312) （20145028312）
