摘要
针对高桩码头结构受后方岸坡不断淤积影响下的变形破坏问题,采用有限差分法分别建立高桩码头与岸坡土体耦合的整体结构段模型和单排架模型,研究了码头桩基随土体淤积进程的位移变化规律。结果表明:码头结构整体以竖向位移为主,并向后方岸侧倾斜,桩基顶部水平位移明显小于桩身下部水平位移,由于桩身弯曲,桩顶处受力最为不利;单排架模型与整体结构段模型中间排架各桩基的位移计算结果更为接近,最大偏差为5.46%,且采用单排架模型可显著提高计算效率,但不能反映出不同位置排架的变形差异。
Aiming at the deformation and failure characteristics of high piled wharf structures under the condition of continuous siltation of the bank slope,we established the wharf-slope coupled models of the whole structure and the single-bent structure respectively using finite element method.The displacement variation of the wharf pile foundation with the process of bank slope siltation was studied.The results show that the structure mainly experiences vertical displacement with an incline towards the shore at its back.The horizontal displacement of the pile top is obviously smaller than that of the lower part of the pile.Due to the curvy shape of the pile body,the least favorable position of stress is at the top of a pile.The simulation result of the single-bent model is closer to that of the middle bent of the whole structural model,with the maximum deviation barely reaching 5.46%.Thus,the single-bent model can significantly improve the calculation efficiency,but it is unable to reflect the differences of deformation results in different bent positions.
作者
张栋
张龙
刘欣昕
程星燎
ZHANG Dong;ZHANG Long;LIU Xinxin;CHENG Xingliao(State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Troops 91112 of Chinese People’s Liberation Army,Ningbo 315046,China;Nanjing R&D Tech Group Co.,Ltd.,Nanjing 210029,China)
出处
《水资源与水工程学报》
CSCD
北大核心
2022年第1期159-163,170,共6页
Journal of Water Resources and Water Engineering
基金
中央级公益性科研院所基本科研业务费项目(Y421005)。
关键词
高桩码头桩基
岸坡淤积
桩基变形规律
数值分析
high piled wharf foundation
bank slope siltation
the deformation law of pile foundation
numerical analysis
