桩距对双排钢管桩围堰的受力变形影响分析  

Influence of Pile Distance on Force Deformation of Double-Row Steel Pipe Pile Cofferdam

作　　者：袁聪聪 詹刚毅[2] 侯世磊 江平 章立辰 黄展军 Yuan Congcong;Zhan Gangyi;Hou Shilei;Jiang Ping;Zhang Lichen;Huang Zhanjun(Jiangxi Key Laboratory of Infrastructure Safety Control in Geotechnical Engineering,East China Jiaotong University,Nanchang 330013,China;China Railway Shanghai Design Institute Group Co.,Ltd.,Shanghai 200070,China;China Railway 14th Bureau Group 4th Engineering Co.,Ltd.,Nanchang 330038,China;Jiangxi Port and Shipping Construction Investment Group Port and Shipping Transportation Co.,Ltd.,Nanchang 330038,China;Nanchang Rail Transit Group Co.,Ltd.,Nanchang 330038,China)

机构地区：[1]华东交通大学江西省岩土工程基础设施安全与控制重点实验室,江西南昌330013 [2]中铁上海设计院集团有限公司,上海200070 [3]中铁十四局集团第四工程有限公司,江西南昌330038 [4]江西省港航建设投资集团港航运输有限公司,江西南昌330008 [5]南昌轨道交通集团有限公司,江西南昌330038

出　　处：《华东交通大学学报》2022年第2期45-52,共8页Journal of East China Jiaotong University

基　　金：国家自然科学基金项目(51768020);江西省交通运输厅重点工程科技项目(2019C0010,2019C0011)。

摘　　要：在水下工程中使用双排钢管桩围堰的情况逐渐增多,但是关于围堰各项参数对钢管桩受力变形影响分析的研究较少。建立Plaxis/3D有限元模型研究桩距对钢管桩受力变形影响,将计算结果与实测结果进行对比,验证有限元模型的合理性。通过研究桩间距对钢管桩围堰受力变形的影响,得出结论:随着双排桩桩距的同步增加,钢管桩内力变形会随之增加,增速先提高后减缓;内外侧钢管桩分别增加同样幅度的桩距,增加内侧桩距对围堰变形影响更大;在桩数一定时,增加外侧排桩桩距,比均布钢管桩能更有效控制变形。The use of double-row steel pipe pile cofferdams in subsea engineering is gradually increasing,but there is less analysis on the influence of cofferdam parameters on the deformation and force of steel pipe piles.The calculated results are compared with the measured results to verify the reasonableness of the finite element model.By studying the influence of pile distance on the force deformation of steel pipe pile cofferdam,it is concluded that with the simultaneous increase of double-row pile distance,the internal force deformation of steel pipe pile increases,and then slow down.The pile distance increases by the same magnitude,and the influence of the outer pile distance on the cofferdam is greater than the increase of the inner pile distance.When the number of piles is certain,increasing the outer row pile distance can control the deformation more effectively than evenly distributed steel pipe piles.This paper may provide reference for the design and construction of similar projects.

关 键 词：双排钢管桩围堰 Plaxis/3D 桩距 受力变形 

分 类 号：U655[交通运输工程—港口、海岸及近海工程]