地震作用下深水高桩码头动水压力特性研究  

Characteristics of hydrodynamic pressure about high-piled wharf in deep water under effect of earthquake

作　　者：宋波[1,2] 王海龙[1,2] 林懿翀 陈健 王荣 

机构地区：[1]北京科技大学,北京100083 [2]强震区轨道交通工程抗震研究北京市国际科技合作基地,北京100083 [3]中国港湾建设有限公司,北京100027

出　　处：《水运工程》2015年第5期51-58,共8页Port & Waterway Engineering

基　　金：国家自然科学基金资助项目(No.51178045)

摘　　要：随着一些国家高桩码头建设走向强震区和深水区,地震作用下动水压力对深水高桩码头动力性能的影响成为亟待研究的课题。然而,世界各国针对考虑动水压力的深水高桩码头的地震动力响应研究很少,缺乏适用于强震区深水高桩码头的动水压力计算方法。基于附加质量理论,采用p-y曲线法模拟桩土相互作用,通过简化的Morison动水力计算式,研究深水高桩码头结构地震作用下,考虑动水压力和不考虑动水压力时深水高桩码头各项动力性能指标差异。研究结果表明:动水压力对结构的自振特性和结构动力特性影响较明显;强震区深水高桩码头抗震设计需要考虑动水压力对结构的影响。In view that more and more high-pile wharves are constructed in the earthquake and deep water zones in some countries, the influence of hydrodynamic pressure on the dynamic performance of high-piled wharf in deep water become an urgent research subject. However, there are few research on the subject both at home and abroad, and it is lack of calculation method for the hydrodynamic pressure on high-piled wharf in deep water and earthquake zones. Based on the added water mass theory, p-y curve method is used to simulate the pile-soil interaction, and simplified Morison formula is adopted to calculate the hydrodynamic pressure. So the dynamic performance indicators are compared when the hydrodynamic pressure is considered or not, under the action of the earthquake. The results show that the hydrodynamic pressure not only has an impact on the vibration characteristics of the structure, but also has a greater impact on the structure＇s dynamic performance. Therefore, the hydrodynamic pressure should be taken into consideration in the seismic design for the high-piled wharf in in deep water and earthquake zones.

关 键 词：强震区 深水高桩码头 动水压力 附加质量 近远场地震 

分 类 号：TU375.4[建筑科学—结构工程]