软土地基中倾斜桩水平承载特性研究  

Horizontal bearing characteristics of inclined pile in soft soil foundation

作　　者：杜烨 郭胜忠 刘永超[2,3] 卫超群 王淞 陆鸿宇 Du Ye;Guo Shengzhong;Liu Yongchao;Wei Chaoqun;Wang Song;Lu Hongyu(Tianjin Binhai New Area Construction&Investment Group Co.,Ltd.,Tianjin 300459,China;School of Civil Engineering,Tianjin University,Tianjin 300072,China;Tianjin Foundation Engineering Co.,Ltd.,Tianjin 300301,China)

机构地区：[1]天津滨海新区轨道交通投资发展有限公司,天津300459 [2]天津大学建筑工程学院,天津300072 [3]天津建城基业集团有限公司,天津300301

出　　处：《岩土工程技术》2025年第2期239-246,共8页Geotechnical Engineering Technique

摘　　要：为深入研究倾斜桩在软土地基中的水平承载特性,在天津软土地基开展倾斜桩水平承载试验,并利用ABAQUS数值软件深入分析倾斜桩的受力变形特性。研究结果表明:负斜桩的水平承载性能优于正斜桩,负斜桩的水平承载能力与倾角成正比,正斜桩则相反;水平荷载作用下,倾斜桩桩身位移的主要发生区域为(0~12)d(d为桩径)范围,桩身弯矩和轴力极值点皆位于距桩顶约(6~8)d范围,与正斜桩相比,负斜桩的承载性能受倾角变化的影响更明显;负斜桩侧摩阻力合力方向与正斜桩相反,所产生的正摩阻力利于桩身承载性能发挥。A field horizontal load test of the inclined pile on a soft soil foundation in Tianjin was carried out,and ABAQUS nu-merical software was used to analyze the deformation characteristics of the inclined pile.The results show that the horizontal bearing capacity of negative inclined piles is better than that of positive inclined piles.The horizontal bearing capacity of negative inclined piles is proportional to the inclination angle,while that of positive inclined piles is the opposite;Under the action of horizontal load,the main displacement area of the inclined pile body is within the range of 0~12 diameter,and the maximum of the bending moment and axial force of the pile body are located in the range of about 6~8 diameter from the pile top.Compared with positive inclined piles,the bear-ing performance of negative inclined piles is more significantly affected by the change of inclination angle;The direction of the result-ant force of the lateral frictional resistance of the negative inclined pile is opposite to that of the positive inclined pile,and the positive frictional resistance generated is conducive to the bearing performance of the pile body.

关 键 词：倾斜桩 水平承载特性 现场试验 数值模拟 

分 类 号：TU473[建筑科学—结构工程]