杭州湾海域桥梁承台水平方向波浪荷载研究  

Wave horizontal load forced on bridge pile caps in Hangzhou Bay

作　　者：董伟良 邵杰 黄世昌 闫杰超 DONG Weiliang;SHAO Jie;HUANG Shichang;YAN Jiechao(Zhejiang Institute of Hydraulics&Estuary(Zhejiang Institute of Marine Planning and Design),Hangzhou 310020,China;College of Harbour,Coastal and Offshore Engineering,Hohai University,Nanjing 210098,China;China Railway Major Bridge Reconnaissance Design Institute Co.,Ltd.,Wuhan 430101,China)

机构地区：[1]浙江省水利河口研究院(浙江省海洋规划设计研究院),浙江杭州310020 [2]河海大学港口海岸与近海工程学院,江苏南京210098 [3]中铁大桥勘测设计院集团有限公司,湖北武汉430101

出　　处：《人民长江》2023年第10期209-213,共5页Yangtze River

基　　金：浙江省自然科学基金项目(LY20E090001);浙江省省属科研院所扶持专项(海岸A21003);浙江省水利厅计划项目(RA2004)。

摘　　要：针对杭州湾海域跨海桥梁承台最大水平方向波浪荷载缺乏普适性计算公式的问题,收集分析了杭州湾海域波浪特性及主要跨海桥梁通航孔桥墩承台尺寸特征。通过矩形概化承台,构建了三维数值波浪水槽模型,根据承台水平方向波浪荷载系列数值计算结果,提出了适用于跨海桥梁承台最大水平方向波浪荷载的简易计算方法,且讨论了计算方法对不同形状承台和不同流速等情况的适用性。结果表明:承台水平方向波浪荷载计算方法的计算结果和前人研究成果基本一致;受承台阻水作用,矩形承台水平方向波浪荷载大于圆形承台,通过修改公式参数,计算方法也可以用于不同形状承台水平方向波浪荷载计算;随着流速增加,承台水平方向波浪荷载也在逐渐增加,承台水平方向波浪荷载随承台相对长度kb的变化规律与纯波情况基本类似,但最大水平方向波浪荷载对应的kb有所减小。To study the universal calculation method of the maximum wave horizontal force on large pile capof sea-crossing bridges in Hangzhou Bay,the wave characteristics and the size characteristics of large pile caps in Hangzhou Bay are collected and analyzed.A three-dimensional numerical wave flume is established according to a generalized rectangular pile cap,based on which a simplified calculation method of wave horizontal force on large pile caps is obtained.The applicability of the calculation method to different shapes of large pile caps and different flow velocities is discussed.The results show that the wave force calculated by the simplified calculation method is consistent with the previous research results.The horizontal force on a rectangular pile cap is greater than that on a circular pile cap due to the water resistance difference between pile caps.By modifying the parameters,the calculation method is also suitable for the pile cap of different shapes.With the increase in velocity,the horizontal force on the pile cap increases gradually.The variation of horizontal force with kb is similar to that of wave without flow,but kb corresponding to the maximum force decreases.

关 键 词：跨海桥梁 大型承台 水平方向波浪荷载 数值计算 

分 类 号：TU473.1[建筑科学—结构工程]