基于数值模拟法的某海上风电钢管桩承载力特性研究  

Research on the Bearing Capacity Characteristics of Steel Pile in Offshore Wind Power Based on Numerical Simulation Method

作　　者：邹昌喜 张明峻 王伟 徐炎兵 夏建国 ZOU Changxi;ZHANG Mingjun;WANG Wei;XU Yanbing;XIA Jianguo(Central Southern China Electric Power Design Institute Co.,Ltd.,of China Power Engineering Consulting Group,Wuhan 430000)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,武汉430000

出　　处：《土工基础》2025年第1期108-112,共5页Soil Engineering and Foundation

基　　金：中国电力工程顾问集团中南电力设计院有限公司科技项目(40-1A-KY202210-G501)。

摘　　要：海上风电建设的钢管预制桩的应用十分普遍,以某海上风电钢管桩为例,通过数值模型假设、计算参数的选取、锤击荷载的确定,建立了数值模拟有限元模型,将钢管桩在施工过程中的承载力动测数据与数值模拟结果作对比,对沉桩过程中的桩体承载性能进行研究,研究表明:(1)锤击贯入过程中,桩端阻力和桩侧阻力逐渐增大,贯入速率慢慢减小,桩体位移振荡变化,桩端阻力呈“波动式”的缓慢增大。(2)数值模拟法预测的承载力及贯入度与实测结果符合性较高,模拟准确性较高。The application of prefabricated steel pipe piles in offshore wind power construction is highly prevalent.The numeri-cal simulation method is employed to investigate the bearing capacity of steel pipe piles and predict the penetration depth during pile driving.A steel pipe pile in an offshore wind power project was selected as an example to establish the numerical model throughout the proper selection of analytical parameters,and determination of the hammering load.The dynamic measurement data of the axial capacity of the steel pipe pile during the construction process was compared with the numerical simulation re-sults to study the axial capacity performance of the pile during the pile driving process.The research indicates that:(1)During the hammer penetration process,the tip resistance and lateral resistance of the pile gradually increase,the penetration rate gradually decreases,the displacement of the pile oscillates,and the tip resistance increases slowly in a"fluctuating"manner.(2)The axial capacity and penetration depth predicted by the numerical simulation method are highly consistent with the meas-ured results,and the simulation accuracy is high.

关 键 词：数值模拟 钢管桩 承载力特性 

分 类 号：TU473[建筑科学—结构工程]