... Abstract With the increase in tunnel construction scale and service time, the serviceability assessment of shield tunnels has become increasingly critical. The single assessment indicator is not detailed. However, the comprehensive assessment indicator is more qualitative and lacks...

... Abstract As one of the major engineering disasters in tunnel structures, segment lining cracks have significant impacts on the carrying capacity and durability of shield tunnels. This study focused on the lining cracking problems that are induced by annular interfacial unevenness during...

... as the tunnel diameter increases. This study investigates the effects of ground spatial variability on the convergence of shield tunnels in the composite ground, based on a real case of a cross-sea tunnel typically embedded in a ground mixture of soft clay and hard rock in Shenzhen, China. The influence...

... Abstract As the development of underground engineering, shield tunnels in single-pipe and double-deck type have been widely used and promoted to improve the utilization rate of the effective space. For this complex structure, fire may trigger tunnel lining structure damage or even the failure...

... geomechanics strata society iop publishing iop conf shield-driven tunnel conference engineering tunnel geological subdiscipline extension environmental science 861 structural geology shield tunnel excitation interface lining soil-rock interface earthquake engineering 11th Conference of Asian...

... Abstract The safety and performance of shield tunnel structures are essential for metro operations. Therefore, a scientific assessment of the health of the tunnel structure is required during its service life. Although the performance of tunnel structures is affected by complex factors...

... Abstract Compared with the influence of open cut method during the construction of shallow-buried three-lane underground expressway on the surrounding pipelines, urban greening and traffic organization, as a fully-mechanized construction method, shield tunnelling has much smaller disturbance...

... buildings. geology settlement upward displacement proximity geologist construction excavation coefficient tunnel environmental science 861 displacement uplift society iop publishing iop conf simulation shield tunnel underground space technology conference tunnel construction 11th...

... Abstract A numerical plane-strain model is established on the basis of the nonuniform deformation pattern proposed by Loganathan and Poulos. A 2D analysis method of the rock–liner interaction is proposed for the shallow shield tunnel. The accuracy of the proposed method is verified...

... Abstract Synchronous grouting can reduce the disturbance to the stratum and protect the tunnel structure to a certain extent. In this paper, we focus on how to determine the appropriate synchronous grouting pressure, based on a large diameter subsea shield tunnel in rock stratum in Shenzhen...

... been combined with Euler-Bernoulli beam theory to calculate the stress and displacement of the tunnel [6]. tunnel stiffness thickness shield tunnel reservoir geomechanics society iop publishing iop conf rpjt underground space technology geology le efficiency axis conference geologist...

... excavation encountering karst caves, karst grouting treatment technology is gradually developing. However, the construction experience of shield tunnel karst caves treatment grouting may not provide reliable references for underwater shield tunnel construction in karst caves area, especially for underwater...

... Abstract Current underground space development features ever-increasing scales. More and more planned tunnel lines have alignments that are characterized by varying passing depths. Both conditions make it more frequent that the shield tunnel face is exposed to heterogeneous ground consisting...

... Abstract The design and manufacture of the traditional shield machine not only does not strictly consider the various influencing factors of the shield tunneling but also directly selects the existing shield machine or carries on the adaptive transformation to the existing shield machine...

... Abstract Many shield tunnels have been constructed, in urban and mountainous areas, which should be maintained properly to confirm the structural stability and secure the users' safety. However, the influence of geological conditions, the fluctuation of water pressure and the difference...