基于FLAC3D软件模拟港池疏浚对高桩码头结构及岸坡的影响  

Impact of Simulated Harbor Dredging on the Structure and Bank Slope of High-pile Wharf Based on FLAC3D Software

作　　者：成小飞 徐辰晗 杨岳峰 江浩 白浩然 杨欣昊 CHENG Xiaofei;XU Chenhan;YANG Yuefeng;JIANG Hao;BAI Haoran;YANG Xinhao(School of Civil and Ocean Engineering,Jiangsu Ocean University,Lianyungang 222005,China;School of Ocean Engineering,Jiangsu Ocean University,Lianyungang 222005,China;Fujian Provincial Institute of Building Research Co.,Ltd.,Fuzhou 350004,China;Fujian Provincial Transportation Research Institute Co.,Ltd.,Fuzhou 350000,China)

机构地区：[1]江苏海洋大学土木与港海工程学院,江苏连云港222005 [2]江苏海洋大学海洋工程学院,江苏连云港222005 [3]福建省建筑科学研究院有限责任公司,福建福州350004 [4]福建省交通科研院有限公司,福建福州350000

出　　处：《江苏海洋大学学报（自然科学版）》2024年第3期53-61,共9页Journal of Jiangsu Ocean University:Natural Science Edition

摘　　要：基于内河某码头港池疏浚项目,采用FLAC3D软件建立三维模型,对疏浚前后码头各构件以及岸坡的位移与应力变化进行分析研究。结果表明:疏浚工程会对码头部分构件产生重要位移及应力的影响。疏浚完成后,在码头与驳岸接驳位置产生了较大的沉降,为28 mm左右;在码头斜桩段位置出现了最大水平位移,为4 mm左右;在引桥纵梁正下方,所在区域土层发生了最大水平变形,为70 mm左右。随着码头南端与引桥距离的增加,桩基支撑作用逐渐减弱,桥梁的侧向变形逐渐增大,同时在引桥后方桩位置处出现了最大弯矩与最大剪力。Based on the dredging project of a wharf basin in an inland river,this paper uses FLAC3D software to establish a three-dimensional model,analyzes and studies the displacement and stress changes of each wharf component and bank slope before and after dredging.The results show that the dredging project will have an important impact on the displacement and stress of some components of the wharf.After the dredging is completed,a large settlement occurs at the connection position between the wharf and the revetment,which is about 28 mm.The maximum horizontal displacement occurred at the position of the inclined pile section of the wharf,which is about 4 mm.Directly below the longitudinal beam of the approach bridge,the maximum horizontal deformation of the soil layer in the area is about 70 mm.With the increase of the distance between the south end of the wharf and the approach bridge,the supporting effect of the pile foundation gradually weakens,and the lateral deformation of the bridge gradually increases.At the same time,the maximum bending moment and maximum shear force appear at the position of the pile behind the approach bridge.

关 键 词：码头疏浚 FLAC3D数值模拟 构件变形 应力分析 

分 类 号：U656.113[交通运输工程—港口、海岸及近海工程]