河流冰撞击实体桥墩的作用力影响因素分析  

ANALYSIS ON THE IMPACT FORCE OF ICE-PIER INTERACTION

作　　者：鄂宇辉 李忠龙[2] 牛津 E Yuhui;LI Zhonglong;NIU Jin(Traffic Engi.Quality and Safety Supervision Bureau of Liaoning Province,Shenyang 110000,China;School of Transportation Science and Engi.,Harbin Institute of Technology,Harbin 150090,China)

机构地区：[1]辽宁省交通工程质量与安全监督局,沈阳110000 [2]哈尔滨工业大学交通科学与工程学院,哈尔滨150090

出　　处：《低温建筑技术》2018年第11期44-47,共4页Low Temperature Architecture Technology

基　　金：国家自然科学基金面上资助项目(51778194)

摘　　要：每年春季开河期,漂浮的冰排在水流作用下向下游移动并冲击水工建筑物,这是寒区跨水桥梁设计中不可忽视的重要问题。本文采用有限单元法,建立冰排撞击桥墩的有限元模型,借助显示动力分析软件ANSYS计算撞击力时程和冰排的破坏情况,分析和讨论冰速、冰厚、冰强度、破冰体形状等因素对流冰撞击力的影响。仿真分析围绕影响撞击力的主要因素开展,对河流冰撞击力的计算和流冰灾害的防治工作有一定的参考价值。When river ice cover breaks up every spring, ice floes move downstream and impinge on hydraulic structures under the action of water flow. This is an important issue that cannot be ignored in the design of cross-water bridges in cold regions. In this paper, the finite element method is used to build simulation model that ice impact bridge pier. The dynamic analysis software ANSYS is utilized to calculate the impact time history and the damage of the ice floe. Influence factors such as ice speed, ice thickness, ice strength, and shape of ice apron are analyzed and discussed in calculating ice impact force. The simulation analysis is carried out around the main factors affecting the impact force, which has certain reference value for the calculation of river ice impact force and the prevention and control of ice drift disaster.

关 键 词：河流冰 冰与结构作用 撞击力 ANSYS 

分 类 号：TU313[建筑科学—结构工程]