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List of products by author: D. Zhang
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Experimental and Numerical Study on Waterproof Behavior of Segmental Joints in Hydraulic Shield Tunnels
Abstract: Segmental joints are vulnerable parts in the shield tunnels, and the waterproof ability of the sealing gaskets is an important indicator to ensure the safety and operation of the hydraulic tunnel. Based on the Pearl River Delta water resources allocation project, the waterproof capacity of segmental joints is experimentally studied. And a new numerical method, including fluid pressure...
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Numerical modeling of the seepage erosion process around tunnels using DEM
Abstract: For a shield driven tunnel with segmental lining built in saturated soils, the tunnel convergence and differential longitudinal settlement may induce the opening and stagger of segmental joints and generate segmental cracks. Therefore, the leakage frequently happens at the locations such as the circumferential and longitudinal segmental joints, cracks and grouting holes. In the low permeability...
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Numerical Modelling of Bolt Corrosion Impact on Performance of Segmental Shield Tunnel Lining
Abstract: Bolt corrosion has been encountered more often for tunnels embedded under water or in saturated soils with the tunnel operation time. The corrosion of tunnel bolts will definitely reduce the rigidity and ultimate bearing capacity of tunnel lining, increase the deformation of the tunnel convergence, and thus endanger the safety of the tunnel structure. In this paper, the Shanghai metro tunnel...
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Robust Design Method of Large-diameter Shield Tunnels through Multiple Strata
Abstract: Since the large-diameter shield tunnel usually goes through multiple strata, the variation of ground condition may have a very significant impact on the tunnel performance. Unfortunately, the conventional design method cannot consider the effect of uncertainty of the multiple strata. Thus, the robustness design method of large-diameter shield tunnelling through multiple strata is proposed. The...
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