Model testing of tripod caisson foundations in silty clay subjected to eccentric lateral loads  

作　　者：Shili MA Liquan XIE Tsung-Chow SU 

机构地区：[1]College of Civil Engineering,Tongji University,Shanghai 200092,China [2]Department of Ocean and Mechanical Engineering,Florida Atlantic University,Boca Raton,FL 33431,USA

出　　处：《Frontiers of Structural and Civil Engineering》2023年第3期467-476,共10页结构与土木工程前沿（英文版）

基　　金：The work presented in this paper was supported by the National Natural Science Foundation of China(Grant No.51479137).

摘　　要：In this study,model tests were conducted to investigate the bearing capacities of tripod caisson foundations subjected to eccentric lateral loads in silty clay.Lateral load–rotation curves of five eccentric-shaped tripod suction foundations were plotted to analyze the bearing capacities at different loading angles.It was observed that the loading angle significantly influenced the bearing capacity of the foundations,particularly for eccentric tripod caisson foundations.Compared with eccentric tripod caisson foundations,the traditional tripod foundation has a relatively high ultimate lateral capacity at the omnidirectional loading angle.By analyzing the displacement of the caissons,a formula for the rotational center of the tripod caisson foundation subjected to an eccentric lateral load was derived.The depth of the rotation center was 0.68–0.92 times the height of the caisson when the bearing capacity reached the limit.Under the undrained condition,suction was generated under the lid of the“up-lift”caisson,which helps resist lateral forces from the wind and waves.

关 键 词：tripod caisson foundation silty clay eccentric lateral capacity model tests 

分 类 号：P75[天文地球—海洋科学]