Investigation of influence of tunneling on existing building and tunnel: model tests and numerical simulations |
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| Authors: | Hossain Md Shahin Teruo Nakai Kenji Ishii Toshikazu Iwata Shou Kuroi |
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| Institution: | 1.Islamic University of Technology,Gazipur,Bangladesh;2.Geo-Research Institute,Nagoya,Japan;3.Kajima Corporation,Tokyo,Japan;4.Nippon Telegram and Telephone West Corporation,Osaka,Japan;5.Okumura Corporation,Miyagi,Japan |
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| Abstract: | To investigate the realistic ground behavior during tunneling, a new device has been developed. With the new device, model tests of tunnel excavation considering an existing tunnel and an existing building were carried out. Non-linear finite element analyses corresponding to the model tests were also conducted using FEMtij-2D software where an elastoplastic subloading t ij model was used to describe the mechanical behavior of soil. Earth pressure distribution around the tunnels and ground movements during tunnel excavation depend on the distance and position between the twin tunnels. There is a significant effect of tunneling on the existing foundation of building even in the case where the tunnel is constructed in deep underground. The numerical analyses capture well the results of the model tests. |
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