2007
DOI: 10.1007/s00603-007-0137-8
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Visco-Plastic Behaviour around Advancing Tunnels in Squeezing Rock

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Cited by 159 publications
(70 citation statements)
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“…The creep function ([) defined in the CEB-FIP code, once synthesized the information contained in its sections, can be written as in equation [4].…”
Section: Ceb-fip Modelmentioning
confidence: 99%
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“…The creep function ([) defined in the CEB-FIP code, once synthesized the information contained in its sections, can be written as in equation [4].…”
Section: Ceb-fip Modelmentioning
confidence: 99%
“…La función de fluencia ([) definida en el código, una vez sintetizada la información contenida en sus diversas secciones, puede ser escrita como en la ecuación [4]. Donde: t • 0 es la edad a la carga, RH/100 es la humedad relativa ambiental en % (100% • si el hormigón no puede intercambiar humedad con el medio).…”
Section: Modelo Ceb-fipunclassified
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“…The other method is to adopt new theory (such as fracture and damage theory etc.) to construct creep model of rock (Grgic et al 2003;Enrico and Tsutomu 2001;Pellet et al 2005;Fabre and Pellet 2006;Sterpi and Gioda 2009). The proposed rheological models by the above two methods can all describe the accelerating creep stage of rock material.…”
Section: Nonlinear Accelerating Creep Modelmentioning
confidence: 99%
“…The proposed model produces reasonable predictions of the elastoplastic deformation of sandstone under varying stress paths, cyclic loadings, and postpeak behavior. In addition to simulating immediate rock deformation, the time-dependent deformation (i.e., creep deformation) of rock is a major concern in engineering practice (Cristescu 1989;Hoxha et al 2005;Tomanovic 2006;Xie and Shao 2006;Sterpi and Gioda 2009;Weng et al 2010a, b). According to previous studies on creep deformation of sandstone (Tsai et al 2008;Weng et al 2010a), viscoplastic flows indicate that the viscoplastic potential surface has a similar shape to the plastic potential surface, but the size of the viscoplastic potential surface changes with time.…”
Section: Introductionmentioning
confidence: 99%