CONSTRUCTION TECHNOLOGY OF REMOVING THE LEGACY H-SHAPED STEEL IN THE LIMITED SPACE OF THE BUILT STRUCTURE IN THE SHIELD CROSSING AREA
Based on the practical application of the interval project of Qianjiang road station～Fisherman's Wharf Station of Hangzhou metro line 9,this paper adopts the method of manually digging the shaft after constructing the bottom of the structure,and successfully removes the H-shaped steel left under the bottom of the underground structure.This method to overcome the small working space(low clearance)of various construction restrictions,effective control because of the poor geological conditions,rich groundwater,groundwater soil pressure and potential construction risk,but also ensure the safety of both the underground structure,provides an effective solution for similar engineering.
limited spaceH-shaped steelextraction and recovery
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