作用在引航导堤堤头冰力的模型试验研究  

Model Test for Ice Force on the Bank-Head of the Lead-Navigating Bank

作　　者：宋安[1] 孙金亮[1] 史庆增[1] 汪震宇[1] 王义安[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]交通部天津水运工程科学研究所,天津300456

出　　处：《天津大学学报》2006年第5期537-542,共6页Journal of Tianjin University(Science and Technology)

摘　　要：以现场实际工况及观测数据为依据,以确定某水利枢纽关键迎冰部位引航导堤堤头冰荷载问题为目的, 设计并进行了缩尺的冰模拟试验．对试验数据诸如冰速对冰力的影响、冰排作用于垂直面堤头时各向分力的关系比、垂直面与45°斜面冰力关系比以及作用于45°斜面时其水平与垂直冰力的关系比等进行了分析,并得到初步结论．通过将现有冰荷载公式的计算结果与模型试验结果比较,对运用公式确定冰荷载提出了看法与建议．To determine the bank-head＇s ice force of the lead-navigating bank at key position that faces the ice directly of certain water conservancy, ice model test in reduced scale is designed and carried out based on the local situation on the spot and data observed. Preliminary conclusions are got through the analysis of the experi- mental data such as effect of the ice velocity on the ice force ,ratio of components of forces when ice sheet acting on the vertical bank-head, ice force ratio of vertical to 45 °incline as well as ratio of level ice force to the vertical ice force when acting on 45° incline. Finally, suggestions on determination of the ice force using formula are given after comparison between the result calculated by the present formula of ice force and the experimental resuits.

关 键 词：引航导堤 堤头 冰力 模型试验 

分 类 号：TV131.6[水利工程—水力学及河流动力学]