Construction Technology Innovation of Large High Speed Railway Station Buildings Overpassing Railway Business Lines
Hangzhounan Railway Station is a modem comprehensive transportation hub in the south of Hangzhou and a key project related to people's livelihood.The steel roof of the main station building overpasses 8 railway business lines during construction,which is the first case in China's construction field,and there is no similar construction experience for reference.According to the construction characteristics of the main structure of Hangzhounan Railway Station,this paper analyzes the opening time,sequence and scope of line transfer,divides the construction sections of the main structure,and determines the construction scheme of"three stages and four transfers".Through trial assembly and welding,the welding method and sequence of 12 steel plates in the"cross"column section are determined,and the precise positioning and butt jointing of steel columns are realized by using technologies such as on-site precise measurement and positioning,double splint fixation,and spatial position correction assisted by measuring robot.Through reasonable division of units,design of reliable sliding system,synchronous sliding,safe positioning,accurate closure and other key links,the key technology of sub-unit sliding construction is formed.The construction of the main structure of Hangzhounan Railway Station has been successfully completed through careful planning,scientific and reasonable organization,comprehensive application of BIM technology and other information means,as well as research and development of a series of tooling under special construction conditions.
high speed railway station buildingoverpassing business line"cross"box columnoverhead slidingprotective shed
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