The closure joint is one of the key and difficult points in the construction of immersed tunnel,and its construction process can be divided into various types.Based on the existing engineering experience and its own construction conditions,a new type of closure joint,the jacking segment method closure joint,was proposed for the Dalian Bay immersed tunnel.Through comprehensive comparison,the three closure joint construction techniques of traditional water stop method,jacking segment method,and V-block method are all applicable to the Dalian Bay immersed tunnel.This paper comprehensively compares the characteristics of three closure joint construction techniques from four aspects:structural stress,construction period,construction safety,and construction cost.Finally,it is determined that the closure joint of the jacking segment method is the final construction technology of the Dalian Bay immersed tunnel.
关键词
沉管隧道/最终接头/顶进节段法/V形块体法/传统止水板法
Key words
immersed tunnel/closure joint/jacking segment method/V-block method/traditional water stop method
维普
万方数据