Title: The Leakage Stop of Concrete Settlement Joints in a Subway Station Using Rubber Belts

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Publication: CIA

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Date: 2/13/2011

Abstract:
During the construction of Shanghai 1# metro, leakage problems were occurred in almost all the concrete joints between the main structure and passage and side tunnels due to the settlement difference and incorrect installation of rubber belt. Ordinary Slurry injection and installation of belt usually could not manage leakage problems completely. A comprehensive technology including the installation of internal changeable rubber belt, polymer injection and fillers are studied for leak-proof management, Demonstration projects indicate that leakage problems due to settlement difference between structures could be effectively prevented with this technology.