吸力式沉箱基础极限上拔承载力的上限解  

Upper bound solution for uplift ultimate bearing capacity of suction caisson foundation

作　　者：张庆海 Zhang Qinghai(College of Agriculture ＆ Water Conservancy Engineering,Suihua University Suihua 152000 China)

机构地区：[1]绥化学院农业与水利工程学院,黑龙江绥化152000

出　　处：《黑龙江科技大学学报》2018年第4期467-470,共4页Journal of Heilongjiang University of Science And Technology

基　　金：绥化学院科学技术研究项目(K201702005)

摘　　要：为分析吸力式沉箱基础的竖向上拔极限,选取Hill破坏机构,建立机动位移速度场。考虑土体自重、黏聚力、土压力及摩擦系数,计算不同界面的能量耗散率,进而推导吸力式沉箱基础上拔荷载作用下极限承载力的上限解表达式。利用Matlab软件计算上限解,并与文献中实验数据对比。结果表明,文中公式所得上限解接近实验值,Hill破坏模式较为合理。该研究为吸力式沉箱基础的上拔极限分析提供了参考。This paper is aimed at identifying the ultimate bearing capacity of suction under vertical uplift load. The study building on the Hill failure mode involves field of maneuvering displacement; calculating energy dissipation rate of different interfaces by considering the factors of soil weight, cohesion, friction coefficient and earth pressure in the upper-bound theorem; thereby deriving upper bound solution of bearing capacity of suction caisson foundation ; and calculating the upper bound solution using the Matlab program and comparing the results with data. The results show that the upper bound solution of the formula is close value, and the Hill failure mode is more reasonable. This study may provide a analysis of suction caisson foundations.

关 键 词：吸力式沉箱基础 极限承载力 Hill破坏模式 位移速度场 

分 类 号：TU473[建筑科学—结构工程]