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介绍了格型地下连续墙这种主体工程与支护结构相结合的半重力式围护结构及其在既有船坞接长工程中的应用。结合外高桥2号船坞接长工程,对空间效应较为明显的格型地下连续墙结构进行考虑结构与土体共同作用的三维数值分析,并与现场实测数据进行了对比。分析表明,这种新型的自立式结构不需要内部支撑,通过合理的前后墙与隔墙的布置,能够较好地发挥格仓内部土体的作用,有效的控制围护结构的变形,可为周围环境条件要求较高的船坞接长工程可以提供有效的工程解决方案。
This paper introduces the semi - gravity enclosure structure combined with the main project and supporting structure of the underground diaphragm wall and its application in the existing dock docking project. In combination with the docking project of Waigaoqiao No.2 Dock, three-dimensional numerical analysis considering the interaction between structure and soil was conducted on the underground diaphragm wall structure with obvious spatial effect, and compared with the measured data. The analysis shows that this new type of self-supporting structure does not require internal support. The rational arrangement of the front and rear walls and the partition wall can give full play to the soil inside the cells and effectively control the deformation of the envelope structure. Docking projects requiring high ambient conditions can provide an effective engineering solution.