- 摘 要
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1)廣東省建筑設(shè)計(jì)研究院，廣州，510010；2)中科院廣州地球化學(xué)研究所，廣州，510640；3)中山大學(xué)，廣州，510275。
［提要］隨著圓形平面建筑物和球形建筑物的廣泛使用，環(huán)形的基坑支護(hù)結(jié)構(gòu)也日益增多。但礙于巖土與地下連續(xù)墻復(fù)雜相互作用的不確定性及施工過程的不可控制性，環(huán)形地下連續(xù)墻的空間協(xié)同受力的優(yōu)點(diǎn)一直被忽視。以考慮巖土結(jié)構(gòu)相互作用的彈塑性三維仿真計(jì)算為依據(jù)，利用環(huán)形結(jié)構(gòu)協(xié)同受力的特點(diǎn)，結(jié)合柱支式地下連續(xù)墻逆作法技術(shù)，提出新型的環(huán)形連續(xù)墻結(jié)構(gòu)逆作法技術(shù)。實(shí)際工程應(yīng)用證明，該技術(shù)可有效減小地下連續(xù)墻側(cè)移和彎矩，有縮短工程施工總工期、節(jié)省費(fèi)用等優(yōu)點(diǎn)。
［關(guān)鍵詞］環(huán)形；地下連續(xù)墻；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
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