低裙摩擦型吸力式基础及其可贯性对比试验  

Experimental research on development of low skirted friction suction caissons and its penetrability

作　　者：柳晓科 苏敏 鹿群 刘海涛 赵丽红 郭少龙 王清华 LIU Xiaoke;SU Min;LU Qun;LIU Haitao;ZHAO Lihong;GUO Shaolong;WANG Qinghua(North China Municipal Engineering Design and Research Institute Co.,Ltd.,Tianjin 300381,P.R.China;Shandong Wansida Zhizhu Education Technology Co.,Ltd.,Jinan 250000,P.R.China;School of Civil Engineering,Tianjin Chengjian University,Tianjin 300384,P.R.China;Tianjin Hengde Labor Service Co.,Ltd.,Tianjin 300350,P.R.China;STECOL Corporation,Tianjin 300384,P.R.China)

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津300381 [2]山东万斯达智筑教育科技有限公司,济南250000 [3]天津城建大学土木工程学院,天津300384 [4]天津市恒德劳动服务有限公司,天津300350 [5]中国电建市政建设集团有限公司,天津300384

出　　处：《重庆大学学报》2024年第6期24-34,共11页Journal of Chongqing University

基　　金：天津市技术创新引导专项(23YDTPJC00110);中国电建市政建设集团有限公司2020年度重点项目(KHX2020-006);中国市政工程华北设计研究总院有限公司自立课题(2023-20-JIUY)。

摘　　要：为进一步优化吸力式基础结构,减小“土塞”效应,提高吸力式基础的可贯性与承载力,文中提出了低裙摩擦型吸力式基础模型。通过室内模型试验对比研究了不同吸力式基础模型的负压(P)-沉贯量(y)曲线。给出沉贯力、沉贯阻力与沉贯量之间的关系,结合试验数据分析了不同桩型之间的差异,对比得出各类桩型的可贯性及沉贯量。结果表明,低裙摩擦型吸力式基础可贯性良好,能有效减小“土塞”效应,提高桩体承载力。In this study,a low skirted friction type suction caisson model was proposed to optimize suction foundation,reduce soil plugging effect,and improve penetrability and load capacity.Indoor model tests were conducted to investigate the relationship between penetration force,resistance and volume in negative pressure(P)-sinker volume(y)curves with different suction caisson types.Furthermore,the study analyzed differences among various caisson models and confirmed their penetrability and sinker volume.Results demonstrate that the low-skirt friction type suction caisson,offering improved penetrability,effectively mitigates soil plugging and improves caisson bearing capacity.

关 键 词：低裙摩擦型吸力式基础 可贯性 沉贯力 沉贯阻力 

分 类 号：TU354[建筑科学—结构工程]