摘要
建立三维有限元模型对采用格型地下连续墙和高桩梁板地下连续墙围护结构的船坞基坑进行分析,计算中假定土体为横观各向同性体,考虑土与结构的共同作用以及土体分区开挖.通过分析实测数据和计算结果,研究了无支撑船坞基坑开挖过程中格型地下连续墙和高桩梁板地下连续墙的变形特性.计算结果表明,船坞基坑围护结构的变形性状受其结构形式以及施工工况的影响,基坑内部桩基对船坞基坑围护结构变形影响较大,船坞基坑的开挖对临近基坑的影响很小.
Three-dimensional finite element method was used to analyze an unbraced dock excavation. Cellular diaphragm wall and high-piled slab ＆ beam diaphragm wall were used as the retaining structures of the excavation. The soil was assumed as cross-isotropy elastic material. The calculated results of retaining wall deflections agree well with the field measurements. The calculated results show that the deformation behavior of the retaining wall is influenced by its structure form and construction sequence of the excavation. The piles in the excavation can control the deformation of the retaining wall effectively. The effect of the dock excavation on the adjacent excavation was also discussed.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2009年第6期972-975,共4页
Journal of Shanghai Jiaotong University
基金
上海市登山行动重大资助项目(00062012005)
国家自然科学基金资助项目(50679041)
关键词
格型地下连续墙
高桩梁板地下连续墙
无支撑
三维有限元方法
变形特性
cellular diaphragm wall
high-piled slab
beam diaphragm wall
unbraced excavation
threedimensional finite element method
deformation performance
