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List of products by author: J. Yang
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Damage cause and renovation of base structure of a railway tunnel at slightly-dipping interbedding rocks: a case study
Abstract: The Y.D. Tunnel, designed with double block ballastless tracks in Southwest China was excavated at low-medium thick slightly-dipping interbedding rock mass of medium-weathered mudstone and sandstone. A high uplift appeared in the tunnel floor within the region of K208+620~+629 after the tunnel was put into service, seriously influencing the railway operation. In-situ stress was measured;...
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Evaluating the damage of adjacent framed buildings induced by tunnel construction in soil ground
Abstract: Urban tunnel construction may lead damage to the adjacent surface buildings. Empirical method usually oversimplified the surface structure as an equivalent elastic beam which cannot characterize the realistic behaviour of framed building due to frame action. In this study, numerical analyses were carried out to investigate the damage mechanism of fully infilled framed building with opening in...
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Evaluation Model of Technical Condition for Highway Tunnel Lining Structure Based on Matter-Element Theory
Abstract: It is the largest in the world that the mileage and construction scale of new highway tunnels of China Safety problem of tunnel structure has been more and more emphasized heavily. Based on construction experience, long term safety of highway tunnel is mainly depending on technical status of supporting and lining. Nevertheless, the technical status evaluation has long been based on technicians’...
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Initial proposal and discussion on performance based waterproofing design for mountain tunnels
Abstract: There is a saying: nine in ten tunnels seepage in tunnel and underground engineering in China. It’s not much exaggerated as severe leakage and repeat maintenance. For a long time, we put the problem mainly due to the traditional waterproofing sheets. As to the mountain tunnels of composite tunnel lining the waterproofing sheet membrane is sandwiched between temporary sprayed concrete lining and...
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Research on Cracking Behavior of Tunnel in Carbonaceous Slate Rock Mass during Construction Period
Abstract: A case study of the cracking behavior in a highway tunnel structure during construction period is researched in this article, including fgure out the causes and evolution of cracking. The large deformation of rock mass is the major infuence of the damaging behavior, which is based on the feld investigation. The results highlight the regions of cracking on tunnel bottom structure, emphasize the...
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Soil Conditioning for Shield Tunneling in Argillaceous Siltstone in Nanchang Metro Line 1, China
Abstract: Nanchang Metro Line 1, China was mainly excavated through argillaceous siltstone in some sections. Soil clogging happened in the early construction stage, and so deep investigation was carried out in another section of the metro line to avoid the soil clogging. Based on mineral-ogy investigation, the content of clay minerals is 40.5% in the argillaceous siltstone (kaoline 27.8%, illite 8.3%,...
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The field experiences of Spray-applied Acrylate Waterproofing Membrane for tunnels in alpine and cold areas
Abstract: A number of successful application cases of the Spray-applied Waterproofing (SAW) Method for tunnels have been reported during the last 20 years (Blair et al., 2005; Holter et al., 2014). It has been proved to be a cost-effective way to reduce the serious leakage problem in tunnels and underground structures. Although there are still some discussions on its possibilities and limitations...
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