3 blast furnace, and the key points concerning the design, construction, and inspection of the structure support system, which is consisted of U-steel fence piles, rope anchors and steel pipe supports, are described in this article.

In this article,the author introduces the selection principle of the deep foundation pit support structure of the subway station,and key design points of underground continuous wall and steel pipe support,and discusses the insert depth of underground continuous wall into the soil\|rock compound stratum.

In this paper,by using Huluding Bridge in Nanning as an engineering example,steel pipe piles support method,steel formwork constructions technology and C60 concrete construction technology of long connected continuous steel girder component for 3400t 0# block construction are introduced in detail,and new construction technologies used in 0#bolck are summarized.