Influence of the Constitutive Model for Shotcrete on the Predicted Structural Behavior of the Shotcrete Shell of a Deep Tunnel

被引：17
|
作者：
Neuner, Matthias [1 ]
Schreter, Magdalena [1 ]
Unteregger, David [1 ]
Hofstetter, Guenter [1 ]
机构：
[1] Univ Innsbruck, Inst Basic Sci Engn Sci, Unit Strength Mat & Struct Anal, Tech Str 13, A-6020 Innsbruck, Austria
来源：
MATERIALS | 2017年 / 10卷 / 06期
关键词：
shotcrete; tunneling; finite element model; numerical simulation; constitutive model; damage model; plasticity model; MULTISURFACE CHEMOPLASTICITY; CONCRETE; CRITERION;
D O I：
10.3390/ma10060577
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The aim of the present paper is to investigate the influence of the constitutive model for shotcrete on the predicted displacements and stresses in shotcrete shells of deep tunnels. Previously proposed shotcrete models as well as a new extended damage plasticity model for shotcrete are evaluated in the context of 2D finite element simulations of the excavation of a stretch of a deep tunnel by means of the New Austrian Tunneling Method. Thereby, the behavior of the surrounding rock mass is described by the commonly used Hoek-Brown model. Differences in predicted evolutions of displacements and stresses in the shotcrete shell, resulting from the different shotcrete models, are discussed and simulation results are compared to available in situ measurement data.
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页数：17
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