摘要
本文结合我国东北F大坝32~#坝段的横向扬压力观测资料,用物理推断法和统计相关法选择扬压力统计模型的因子。文中着重对时效因子进行研究,选择三种不同的时效模型与水压因子进行组合,从而用逐步回归分析法求出扬压力的最佳统计模型及回归方程。该模型不仅与当日水头有关,而且与用时效因子表示的坝踵附近的泥沙淤积程度有关。用该统计模型分析实测资料,其分析结果与实测值拟合较好。
Based on the observed data of the lateral uplift of section No.32 of F dam in North-East China,this paper has found out the statistical model factors of uplift using physical inference and statistical dependence methods. Three kinds of time effect models are selected to be combined with water pressure factor,and the optimal statistical model and regression equation are obtained through step-by-step regression analysis.This model is not only related to the waterhead at the time when piezometer is read but also related to the degree of sitting near the dam heel expressed by the factor of time effect.The results obtained from analysing the obser- vation data with this statistical model well fit the observed values.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1989年第1期109-116,共8页
Journal of Hohai University(Natural Sciences)
关键词
混凝土
坝
坝基
扬压力
统计模型
uplift on dam foundation
statistical model
time effect factor
step-by-step regression analysis
