摘要
跨海桥梁桩基基础所受的波流荷载是跨海桥梁设计中重点考虑的荷载之一,实际工程中波流力的计算多参考《港口与航道水文规范:JTS145—2015》中推荐的单桩桩基基础波流力计算方法,未合理考虑局部冲刷形状的影响。以港珠澳大桥为例,在桩基基础波流力和冲刷试验结果的基础上,通过对计算模型中流速、C D、C M等参数的选取进行修正,提出了考虑局部冲刷形状的桩基基础波流力计算方法,在保证工程安全性的同时兼顾了工程的经济性,并成功应用于港珠澳大桥桥梁桩基的设计中。
Wave and current loads on pile foundation of sea-crossing bridges have always been given priority in the design of sea-crossing bridges.The wave-current force in practical projects is usually obtained by the computing method of wave-current force for single pile foundation recommended in the Code of Hydrology for Harbour and Waterway(JTS145—2015),without reasonable consideration of the influence of local scour shape.In this study,Hong Kong-Zhuhai-Macao Bridge has been taken as an example.Based on physical model test results,a calculation method of wave-current force for pile foundation considering local scour patterns is proposed by modifying the selection of such parameters as velocity,C D and C M in the calculation model.The proposed method,which guarantees the project safety and can be cost-effective as well,has been successfully applied to the design of pile foundation of Hong Kong-Zhuhai-Macao Bridge.
作者
孙天霆
王树鹏
潘军宁
王登婷
刘清君
SUN Tianting;WANG Shupeng;PAN Junning;WANG Dengting;LIU Qingjun(Key Laboratory of Port,Waterway and Sedimentation Engineering of the Ministry of Transport,Nanjing Hydraulic Research Institute,Nanjing 210024,China)
出处
《水科学进展》
EI
CAS
CSCD
北大核心
2019年第6期863-871,共9页
Advances in Water Science
基金
国家重点研发计划资助项目(2017YFC1404200)
国家自然科学基金资助项目(51579156
51520105014)~~
关键词
跨海桥梁
桩基基础
波流力
局部冲刷
港珠澳大桥
sea-crossing bridge
pile foundation
wave-current force
local scour
Hong Kong-Zhuhai-Macao Bridge
