Numerical simulation for surface settlement considering face vibration of TBM tunnelling in mixed-face condition

Kwak, Chan; Park, Innjoon

doi:10.9711/ktaj.2015.17.3.333

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The vibration intensity of the ground structures is closely related to the vibration intensity of the source, mechanical properties of the ground, and dynamic characteristics of the building or equipment (Kwak and Park 2015;Namli and Aras 2020). Under complex geological conditions, nite-difference software can be used to perform 3D simulations of TBM and the surrounding environment.…”

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confidence: 99%

Mechanical aspects of construction of new TBM tunnel under existing structures

Zhang

et al. 2021

Preprint

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It is inevitable for the construction of subways to pass under the existing structures in the city; this will cause settlement of the existing structures and affect their safety. The soil is a complex mixture, and hence it is difficult to determine the damage caused by construction using tunnel boring machine (TBM) method to the stress balance of the surrounding soil. Normally, settlement and uplift of the surface are caused during tunneling. Therefore, large-scale 3D simulations are needed to study the interaction between mechanically driven tunnel construction and the surrounding soil to estimate the expected settlement and related damage risks to the existing structures, especially in tunnel construction in urban areas. Qingdao Metro Line 1 in the Haixiao section (Xiaocunzhuang and Haiboqiao stations) was taken up as the research object to study the trend and degree of the effect of TBM tunnel construction using the numerical simulation software Midas GTS NX. The numerical simulation results and measured data were used for the reliability analysis to study the influence of different digging speeds and pressures in TBM construction on ground subsidence, and the effect of vibrations generated at the tunnel face by the TBM cutter head on the ground structure. It is shown that when other factors remain unchanged, the faster the driving speed, the smaller the ground settlement; the higher the surrounding rock pressure, the smaller the ground settlement. The vibration of the ground structure caused by the TBM cutter head complies with the relevant specifications. During construction, the driving parameters should be selected suitably depending on the available budget.

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confidence: 99%

Mechanical aspects of construction of new TBM tunnel under existing structures

Zhang

et al. 2021

Preprint

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show abstract

“…These problems cannot be ignored during TBM tunnel construction. The vibration intensity of the ground structures is closely related to the vibration intensity of the source, mechanical properties of the ground, and dynamic characteristics of the building or equipment (Kwak and Park 2015;Namli and Aras 2020). Under complex geological conditions, finite-difference software can be used to perform 3D simulations of TBM and the surrounding environment.…”

mentioning

confidence: 99%

Mechanical Aspects of Construction of New TBM Tunnel Under Existing Structures

Zhang

et al. 2021

Geotech Geol Eng

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Numerical simulation for surface settlement considering face vibration of TBM tunnelling in mixed-face condition

Cited by 2 publications

References 2 publications

Mechanical aspects of construction of new TBM tunnel under existing structures

Mechanical aspects of construction of new TBM tunnel under existing structures

Mechanical Aspects of Construction of New TBM Tunnel Under Existing Structures

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