筒式基础结构分仓形式对抗倾承载力的影响  

Effect of Different Forms of Cylindrical Bucket Foundation Structure upon Anti-overturning Ability of Cylindrical Bucket Foundation Structure

作　　者：林飘 姚文娟[1] 张峻[1] 刘逸敏[1] 

机构地区：[1]上海大学土木工程系,上海200072

出　　处：《中国港湾建设》2013年第6期30-35,52,共7页China Harbour Engineering

摘　　要：使用ABAQUS建立了4种不同分仓形式的筒式基础结构与土相互作用的非线性弹塑性有限元分析模型，得到了结构在水平荷载作用下的P-S曲线及极限状态的土压力。重点分析筒仓内壁土压力在不同区域的分布和变化趋势，根据结构的P-S曲线评估分仓形式的改变对结构抗倾能力的影响。结果表明，经过分仓优化的结构可更好地发挥其抗倾潜力，其结构承载力可提升15％～25％。Nonlinear elastic-plastic structure-soil interaction finite element model for four different kinds of compartment divi- sion of bucket foundation was established by using ABAQUS software. Curves of earth pressure and P-S curve were obtained for structures in limit state under horizontal loads. The distribution and variation trend of the inner soil stress in different areas of foundation were analyzed. According to the P-S curve of the structure, the influence of change of warehouse form on the anti- overturning capability of a structure was evaluated. The results showed that the structure can further play its anti-overturning a- bility with the increase of bearing capacity by 15 percent to 25 percent, after the optimization of the compartment division of bucket foundations.

关 键 词：ABAQUS 筒式基础结构 仓内土压力 分仓形式优化 

分 类 号：U656.22[交通运输工程—港口、海岸及近海工程]