Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Restoration Capacity Prediction of Double-Row Capsule Grouting to Control Tunnel Deformation
The double-row capsule grouting (DRCG) is an innovative technique which can restrain the horizontal and vertical tunnel deformations induced by excavation simultaneously. The real-time and active control capacity of DRCG can overcome the shortcomings in invariance and inefficiency of the traditional protective approaches. However, the performance of DRCG and the prediction method of control effectiveness have not been investigated. A numerical analysis using the hardening soil model with small-strain stiffness (HSS model) is conducted to investigate the influences of the relative buried depth and the grouting volume of capsule on the control effect of DRCG in relation to the restoration ratio of horizontal deformation (Rh), and restoration ratio of vertical deformation (Rv). A polynomial relationship between parameters and restoration ratio is observed. Furthermore, a dimensionless formula, developed from hypothetical cases, shows a high conformity between predicted and numerical results. It can accurately predict the control effectiveness of DRCG.
Restoration Capacity Prediction of Double-Row Capsule Grouting to Control Tunnel Deformation
The double-row capsule grouting (DRCG) is an innovative technique which can restrain the horizontal and vertical tunnel deformations induced by excavation simultaneously. The real-time and active control capacity of DRCG can overcome the shortcomings in invariance and inefficiency of the traditional protective approaches. However, the performance of DRCG and the prediction method of control effectiveness have not been investigated. A numerical analysis using the hardening soil model with small-strain stiffness (HSS model) is conducted to investigate the influences of the relative buried depth and the grouting volume of capsule on the control effect of DRCG in relation to the restoration ratio of horizontal deformation (Rh), and restoration ratio of vertical deformation (Rv). A polynomial relationship between parameters and restoration ratio is observed. Furthermore, a dimensionless formula, developed from hypothetical cases, shows a high conformity between predicted and numerical results. It can accurately predict the control effectiveness of DRCG.
Restoration Capacity Prediction of Double-Row Capsule Grouting to Control Tunnel Deformation
Xiaopei He (Autor:in) / Xiaomin Liu (Autor:in) / Zhaopeng Liu (Autor:in) / Wenming Wang (Autor:in)
2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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