Author
Zhongsheng Tan
Bio: Zhongsheng Tan is an academic researcher from Beijing Jiaotong University. The author has contributed to research in topics: Geotechnical engineering & Geology. The author has an hindex of 4, co-authored 10 publications receiving 140 citations.
Papers
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TL;DR: In this paper, a conformal mapping of the complex variable methods is derived for two-dimensional, steady ground water flow into a horizontal tunnel in a fully saturated, homogeneous, isotropic, and semi-infinite aquifer.
102 citations
TL;DR: In this paper, a controlled drainage scheme is proposed for tunnels under high water level, for which there is no code provision for tunnel design and a suitable structure form is suggested and the distribution of water pressure on tunnel lining is studied by theoretical analysis.
69 citations
Patent•
15 Sep 2010
TL;DR: In this article, a testing method of water pressure distribution law of a subsea tunnel lining is presented, and the method comprises the following steps: selecting similar materials to simulate a prototype tunnel surrounding rock mass and lining materials based on similarity theory, determining the shape of a testing template according to shape of the cross section of the water pressure-resistant lining, and completing the making of a model; arranging measuring points of the model, adopting a fiber Bragg grating to collect strain data of the structure, and adopting a U-shaped mercury manometer to carry out data acquisition of
Abstract: The invention discloses a testing method of water pressure distribution law of a subsea tunnel lining, and the method comprises the following steps: selecting similar materials to simulate a prototype tunnel surrounding rock mass and lining materials based on similarity theory, determining the shape of a testing template according to the shape of the cross section of the water pressure-resistant lining, and completing the making of a model; arranging measuring points of the model, adopting a fiber Bragg grating to collect strain data of the structure, and adopting a U-shaped mercury manometer to carry out data acquisition of water pressure; respectively realizing by controlling a hydraulic jack and the water pressure value of a water pressure gauge at a water inlet of the testing model; and respectively carrying out water pressure distribution on the back of the lining, secondary lining strain acquisition and water discharge acquisition. The testing method can reflect the characteristics of the water pressure distribution law on the back of the tunnel lining under the common function of a strain field and a seepage field, the secondary lining stress and the deformation.
20 citations
TL;DR: In this article, a case study of super-large cross-section tunnel in Zhuhai, China is presented, where the tunnel construction risk is great because the stratum which the tunnel passes through is mainly silt and the construction procedure is complex.
13 citations
TL;DR: Results indicate that the PWW method can reduce the water pressure and strain on the lining under the drained state, and more attention could be paid to the waterproof of the movement joints in the construction process, especially the invert.
Abstract: The water around thenear-sea tunnels is supplied infinitely, and mechanical characteristics of the lining and movement joint are inevitably affected by waterproof methods. The research on the mechanical characteristics of the waterproof system is immature. As a case study of the Gongbei tunnel, a scale model was established in this study, and the stratum, pipe curtain, grouting circle, lining, waterproof board, and movement joint were simulated based on the similarity theories. By changing the externally applied water pressure and drainage discharge, the variation and distribution of the water pressure and strain on the lining with the fully wrapped waterproof (FWW) method, the lining with the partially wrapped waterproof (PWW) method, and the movement joint were investigated. Furthermore, several suggestions on the selection of the waterproof method were presented. The results indicate that the PWW method can reduce the water pressure and strain on the lining under the drained state. Under the state of free drainage, the strain on the lining with the PWW method may get a discount of about 30%. More attention could be paid to the waterproof of the movement joints in the construction process, especially the invert. The research results may offer some valuable insights into the waterproof design of similar near-sea tunnels.
9 citations
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TL;DR: In this paper, a new numerical approach for modeling the localised leakage of shield tunnel lining is proposed, in which the leakage is simulated using a one-dimensional leakage element, which overcomes the limitations on the solid meshing of the leakage element and also reduces computational error due to the size difference between the solid leakage elements and lining element.
123 citations
TL;DR: In this paper, a finite element analysis was conducted to study the ground and tunnel response to partial tunnel leakage coupled with anisotropic soil permeability, a novel and little-known approach that was developed from in-situ inspections of shield tunnel leakage in the Shanghai Metro system.
76 citations
TL;DR: In this paper, the effect of grouting material on tunnel leakage and ground and shield tunnel behavior was investigated in a tunnel in saturated clays, where the authors proposed a dimensionless parameter RP slg integrating the permeability and geometry of the tunnel lining and grouting materials.
69 citations
TL;DR: In this paper, the impact of nonlinearity of low velocity flows on the drainage design of grouted subsea tunnels was investigated by considering non-Darcy effects in the design of tunnel drainage system.
60 citations
TL;DR: In this paper, the pore pressure distribution in the aquifer, external water pressure on the grouted zone and water inflow were investigated for a subsea grouted tunnel and analytical solutions were obtained by the complex variable method (CVM), mirror image method (MIM) and axisymmetric modeling method (AMM).
57 citations