施工期拱坝横缝开合度垂直向分布模型初探  

Preliminary analysis on vertical opening distribution model of arch dam transversal joint during construction

作　　者：王利杰 黄耀英[2] 周宜红[2] 

机构地区：[1]华电电力科学研究院,浙江杭州310030 [2]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《人民长江》2013年第15期62-64,共3页Yangtze River

基　　金：国家自然科学基金项目(51079079)

摘　　要：为掌握拱坝横缝开合规律,指导大坝接缝灌浆,应用幂级数的处理方法,组合采用测缝计温度、周期项函数、垂直向坐标及对数函数,建立了基于多支测缝计的施工期混凝土拱坝横缝开合度垂直向分布统计模型。结合某在建的混凝土拱坝实测横缝开合度资料,利用逐步回归分析法获得了模型中各系数。实例分析表明,所建立统计模型的拟合精度和短期预报精度均较高,可以有效指导横缝的接缝灌浆。In order to master the opening and closing law of transversal joints of arch dam for guiding joint grouting,by utilizing power series theory,joint meter temperature,periodic function,vertical coordinates and logarithmic function,a statistical model for vertical distribution of joint opening and closing of arch dam based on multiple joint meters in construction period is established.Through obtained joint opening data of arch dam under construction,the coefficients of the model are calculated by stepwise regression analysis.The example shows that the statistical model has high fitting precision and short-term forecast precision.

关 键 词：分布模型 横缝开合度 施工期 混凝土拱坝 

分 类 号：TV642.8[水利工程—水利水电工程]