T型桩基地连墙组合式码头结构受力特性研究  

Research on stress characteristic of wharf structure combined with T-section pile and diaphragm wall

作　　者：何良德[1] 杨艺平[1] 胡家顺[2] 李元青[2] 李新国[2] 

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098 [2]中交水运规划设计院有限公司,北京100007

出　　处：《水道港口》2012年第6期523-531,共9页Journal of Waterway and Harbor

摘　　要：为了研究T型桩基地连墙组合式新型码头结构在施工期、使用期受力和位移性状,寻求最佳施工方案,以实际工程为依托,通过FLAC 3D软件对码头结构进行三维数值模拟。论证了开挖桩间土的必要性,并分别进行了3组不同的施工方案的比选,并在最佳方案的基础上研究其施工过程中结构位移、弯矩、剪力及地连墙两侧土压力变化规律,及使用期不同荷载作用下分配情况。分析结果表明,以一定坡度开挖桩间土是有必要的,建议与前沿土同时分层开挖。In order to study internat stress and displacement of the wharf structure with T-section piles and diaphragm wall during the construction and operation period, a finite element model of the wharf was built by FLAC 3D on the basis of a real engineering case. The necessity of the excavation for the soil between piles was analyzed, and the comparison of three construction schemes was carried out. Then the best scheme was chosen to analyze the influence of soil excavation on structure displacement, bending moment, shearing force and so on. The results show that it is necessary to excavate the soil between piles with a certain slope,and the stratified excavation of the soil in front of wharf should be done simultaneously.

关 键 词：码头 桩基 地连墙 桩土相互作用 结构变形 

分 类 号：U656.1[交通运输工程—港口、海岸及近海工程] U655.544[交通运输工程—船舶与海洋工程]