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List of products by author: K. Tsuno
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Influence of corroded segment joint on strength of shield tunnel
Abstract: There are some cases where shield tunnels are distorted because of the wide-area ground settle-ment caused by consolidation of surrounding soft clayey ground, adjacent construction and others. To properly maintain the shield tunnels, it is desirable to predict the magnitude of distortion and consider the necessity of measures. Corrosion of segment joints caused by chloride attack is observed in...
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Investigation of the Seismic Performance of the Tunnel Sections with Non-Uniform Heights
Abstract: Tokyo Metro Co. Ltd. operates 9 routes in Capital area of Japan; total length of tunnels is 1.66 km. In Japan, subway tunnels were constructed by the cut & cover method and have typically horizontally oriented double cell box tunnels with rectangular cross sections. Because some tunnels had to be built under narrow roads in Tokyo, there exist some vertically oriented double cell box tunnels...
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Long-term deterioration prediction of cut-and-cover tunnels affected by carbonation or chloride attack based on...
Abstract: In this paper, the parameters for long-term deterioration prediction of subway tunnels in Japan are clarified by the analysis of field data. In Japan, many reinforced concrete structures have been damaged by carbonation or chloride attack, and most of Japanese subway tunnels are built using reinforced concrete. Therefore, it is important to figure out the parameters. The ratio of concrete...
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Monitoring System of Railway Tunnels with Wireless Sensor Network
Abstract: A monitoring method with a wireless sensor network was developed to lighten the workload of data acquisition and reduce the monitoring cost of railway tunnels. A relay method was proposed to transmit the data for a long distance. The performance of the monitoring system was verified by means of field tests in actual railway tunnels. This paper also describes the data processing method which...
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Study on the Behavior Dynamic at the Earthquake of the Crossing Direction of the Tunnel Sections with Non-uniform...
Abstract: Tokyo Metro Co. Ltd. operates 9 routes in Capital area in Japan, total length of the routes is 195.1km. The total length of tunnels is 166km.In Japan, subway tunnels constructed by the open-cut method are typically horizontally oriented double cell box tunnels with rectangular cross sections. The open-cut method involves excavating parts of public roads, installing tunnel frames in place and...
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The situation of the railroad shield tunnel design in the latest Japan
Abstract: In Japan, Tunnel boring machine (TBM) has been used fluently in soft ground at urban area and these tunnels are called “shield tunnel”. Until 1980, the most of all machine was manual excavate type. However, the ground surface settlement was occurred at many sites. As a result, the earth pressure type and slurry type were developed and These are used mainly. Moreover the original design method...
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Tunnel investigation based on hammering sound analysis on Grassmann Manifold
Abstract: Tunnels are fundamental civil infrastructures that greatly facilitate human life. In nowadays, more tunnels are coming to (or even exceeding) the design age, and thus, there is severe challenge to perform efficient condition assessment on aging tunnels so as to manage the risk of failure. In this regard, quite a number of studies have been carried out on tunnel maintenance such as developing...
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