1)广东省建筑设计研究院，广州，510010；2)中科院广州地球化学研究所，广州，510640；3)中山大学，广州，510275。
［提要］随着圆形平面建筑物和球形建筑物的广泛使用，环形的基坑支护结构也日益增多。但碍于岩土与地下连续墙复杂相互作用的不确定性及施工过程的不可控制性，环形地下连续墙的空间协同受力的优点一直被忽视。以考虑岩土结构相互作用的弹塑性三维仿真计算为依据，利用环形结构协同受力的特点，结合柱支式地下连续墙逆作法技术，提出新型的环形连续墙结构逆作法技术。实际工程应用证明，该技术可有效减小地下连续墙侧移和弯矩，有缩短工程施工总工期、节省费用等优点。
［关键词］环形；地下连续墙；逆作法
Application of New Type Annular Underground Diaphragm Wall and Reverse Construction Method/Wang Hong1,2，Chen Xing1，Ou Yanjun1,3 (1 The Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010， China; 2 Guangzhou Institute of Gecchemistry Chinese Academy of Sciences， Guangzhou 510640， China; 3 Sun Yat-sen University， Guangzhou 510275， China)
Abstract:The annular supporting excavations increase with the popularizing of rotundas and sphere buildings. But the advantage of spatial influence of annular underground diaphragm wall was usually ignored due to the uncertainty of soil-wall interaction and uncontrollability of construction process. A new annular underground diaphragm wall reverse construction technique, in which the 3D elasto-plastic simulation of rock-soil-structure interaction, the spatial influence of annular structure and the column-support underground diaphragm wall reverse construction method are all considered and adopted, is proposed. The practice proves that this technique can reduce the lateral shift and moment of underground diaphragm effectively and save construction time and cost.
Keywords: annular; underground diaphragm wall; reverse construction method