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List of products by author: A. Watanabe
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Construction of highway tunnel with the renovation of the railroad viaduct
Abstract: This paper reports the construction of an underground structure by underpinning where the Tokyo Gaikaku Expressway crosses under the railway viaduct of the JR-Sobu Line without affecting train operation. A large-scale box culvert was immersed on both sides of the existing railway viaduct by pneumatic caisson method. In addition, the box culverts were used as foundations for piers which...
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Invert Construction of an Expressway Tunnel in Service with Significant Heaving of Road Bed
Abstract: In recent years, cases have been reported in which road beds in in-service tunnels have heaved, necessitating suspension of expressway traffic. In Toyasan tunnel, which is a two-lane roadway 2600 m long from Aizubange to Nishi-Aizu along the Banetsu expressway, heaving of the road bed was found along a 126-m section two years after it was opened for traffic.Though the section where the road bed...
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