波浪荷载下近海风电高桩承台基础动力响应分析  

Dynamic response analysis for offshore wind power high-pile cap foundation under wave action

作　　者：周静姝[1] 张淑华[1] 陈光明[1] 赵丹会 于可忱[2] ZHOU Jing-shu;ZHANG Shu-hua;CHEN Guang-ming;ZHAO Dan-hui;YU Ke-chen(College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing, Jiangsu 210098, China;Tianjin Communication Architecture Design Institute, Tianjin 300381, China)

机构地区：[1]河海大学港口海岸与近海工程学院,江苏南京210098 [2]天津市交通建筑设计院,天津300381

出　　处：《中国港湾建设》2017年第3期37-42,共6页China Harbour Engineering

摘　　要：为研究波浪荷载作用下近海风电高桩承台基础的动力响应,建立了该结构的桩-土三维有限元模型。引入p-y曲线对斜桩加以修正,并比较修正前后波浪荷载对其的影响,分析工程中是否应当考虑p-y曲线修正系数的影响;考虑不同倾斜方向桩所受波浪力的差异,结合实际工程对波浪作用下带承台约束桩进行动力响应分析;计算桩基的局部冲刷深度,分别取冲刷深度为0 m、2 m、4 m三种工况进行对比,分析局部冲刷对高桩承台动力响应的影响,得到了一些对工程实践有意义的结论。A three dimensional finite element model is established for studying the dynamic response of offshore wind powerhigh pile foundation under wave loading.We introduced p-y curve correction coefficients to modify the batter piles andcompare the dynamic response between before and after the correction,then analyzed whether the influence of correction factorshould be taken into account in the projects.Considering the differences between wave forces on different piles,we combinedwith practical engineering to analyze the dynamic response for piles restrained by cap under wave action.The influence of thelocal scour on the dynamic response of the platform was studied by calculating the local scour depth of pile foundation andcomparing three scour depths0m,2m and4m respectively,and some meaningful results are obtained for engineering practice.

关 键 词：高桩承台基础 斜桩 P-Y曲线 波浪作用 局部冲刷 

分 类 号：U656.6[交通运输工程—港口、海岸及近海工程] TV312[交通运输工程—船舶与海洋工程]