船舶尾流作用下码头抛石基床稳定性物理模型试验研究  

Physical model research on rubble bed stability by ship stern flow

作　　者：张宝华[1] 祝振宇[2] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]中交水运规划设计院有限公司,北京100007

出　　处：《水运工程》2013年第1期144-148,共5页Port & Waterway Engineering

基　　金：中央级公益性科研院所基本科研项目(TKS090202)

摘　　要：采用物理模型试验方法对船舶尾流作用下码头抛石基床稳定性开展研究。选用长14 m,宽8 m,高度1.2 m的开敞式矩形水池作为试验水池,精选颗粒均匀的块石作为试验用基床块石。利用潜水泵模拟拖轮螺旋桨射流,通过调整不同功率潜水泵的出流位置控制研究区域的流速。采用先进的多普勒点式流速仪测量基床抛石前缘和后缘的流速,得到能够对块石基床稳定性造成破坏的流速指标,并经实际工程验证了本模型研究成果的可靠性。The research on rubble bed stability by ship stern flow is carried out using the physical model. The open-type rectangular pool of 14m long, 8m wide, and 1.2m high is chosen as a test pool, and uniform-sized stones are selected as the test bed rock. We use the submersible pump to simulate the tug propeller jet flow, and control the flow rate of the study area by adjusting different power submersible pump positions. The advanced Doppler-point current meter can measure the flow rate of the base bed riprap leading and trailing edge, and get flow rate indicators which can cause damage to the rubble bed stability. Practical engineering has verified the reliability of the research results.

关 键 词：物理模型 抛石基床 水流冲刷 稳定性 

分 类 号：U656.11[交通运输工程—港口、海岸及近海工程]