闸墩冰荷载及过冰能力的模型试验研究  

Model test for ice-force acting on sluice piers and ice-passing capacity

作　　者：宋安[1] 范晓雷[1] 史庆增[1] 王义安[2] 

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

出　　处：《水利学报》2005年第9期1121-1126,1132,共7页Journal of Hydraulic Engineering

摘　　要：本文针对我国东北地区某航电枢纽设计中泄洪闸闸墩的冰荷载以及流冰期排冰的问题进行了对应的物理模拟试验。通过孤立闸墩和双闸墩的冰荷载试验,证实了边界条件对冰荷载的影响,获得了边界影响系数.不同冰速的试验也证明,冰速对于冰力具有明显的影响。文中将试验结果与理论公式计算进行了比较并提出了作者的看法,可供工程设计人员参考。根据现场实测资料,进行了三种江面冰排不同分布和密度的闸墩过冰能力的定性物理模拟试验,阐述了现有工况下闸墩间流冰通过的可能性。Model test was carried out to study the ice-force acting on the sluice piers and the drift icepassing capacity of a hydro project. The effect of boundary on ice load was studied by contrast tests between isolated pier and twin piers, and the boundary effect coefficient was obtained. The test results of different ice velocities show that ice velocity may obviously affect the ice-force. The experimental iceforce was significantly higher than the calculation results of formulas recommended by design standard. The ice-passing capacity of a given project is studied in model test for drift ice flow with three types of ice distribution and various distribution densities.

关 键 词：冰荷载 闸墩 模拟试验 过冰能力 

分 类 号：TV131.6[水利工程—水力学及河流动力学]