[图书][B] Creep and hygrothermal effects in concrete structures

ZP Bažant, M Jirásek - 2018 - Springer
The literature on concrete creep and shrinkage is vast and scattered over many media. A
host of books have already been devoted to this subject. Some are valuable compilations of …

[HTML][HTML] Key features of numerical models for the FE-simulation of deep tunnel advance by the NATM

P Gamnitzer, M Neuner, M Schreter-Fleischhacker… - Underground …, 2024 - Elsevier
In the present work, important aspects of time-dependent nonlinear 3D finite element (FE)
models for deep tunnel advance by the New Austrian Tunneling Method (NATM) …

[HTML][HTML] Experimental study of a wet mix shotcrete for primary tunnel linings—Part I: Evolution of strength, stiffness and ductility

S Smaniotto, M Neuner, A Dummer, T Cordes… - Engineering Fracture …, 2022 - Elsevier
A comprehensive experimental program on the mechanical, hygral and thermal behavior of
a modern wet mix shotcrete is presented. The present part I deals with the evolution of the …

Interaction analysis between composite supports and rheological rock considering progressive hardening characteristic of shotcrete

C Liu, D Zhang, S Zhang, Z Sun - Construction and Building Materials, 2023 - Elsevier
The shotcrete stiffness varies over time in the hardening period, which complexes the
interaction between support structures and rheological rock. This study presents an …

[HTML][HTML] Stress-strain relationship and damage constitutive model of wet concrete under uniaxial compression

F Yang, S Yang, Y Fu, Y Zhang - Case Studies in Construction Materials, 2023 - Elsevier
The deformation and damage of wet shotcrete under geostress in deep mines is a common
issue. To better understand the damage characteristics of rock deformation rates on wet …

From experimental modeling of shotcrete to numerical simulations of tunneling

M Neuner, A Dummer, M Schreter, P Gamnitzer… - Advances in applied …, 2021 - Elsevier
Shotcrete shells constitute an essential part of modern tunnel construction according to the
New Austrian Tunneling Method (NATM). Immediately after excavation of a tunnel segment …

[HTML][HTML] Experimental study of a wet mix shotcrete for primary tunnel linings—Part II: Shrinkage, creep, thermal and hygral behavior of shotcrete

S Smaniotto, M Neuner, T Cordes… - Engineering Fracture …, 2022 - Elsevier
Part II of the study of a wet mix shotcrete focuses on creep and shrinkage as well as on the
thermal and hygral behavior. It deals with the time-dependent mechanical behavior due …

[HTML][HTML] An extended gradient-enhanced damage-plasticity model for concrete considering nonlinear creep and failure due to creep

A Dummer, M Neuner, G Hofstetter - International Journal of Solids and …, 2022 - Elsevier
For high stress levels, the dependence of the creep strain rate of concrete on the acting
stress is nonlinear. Furthermore, very high stress levels may lead to a critical growth of …

[HTML][HTML] Experimental and numerical study on nonlinear basic and drying creep of normal strength concrete under uniaxial compression

A Dummer, S Smaniotto, G Hofstetter - Construction and Building Materials, 2023 - Elsevier
The material behavior of concrete is highly nonlinear and time-dependent. In particular, the
evolution of deformation due to creep is crucially dependent on the acting stress and the …

Time-dependent material properties of shotcrete: Experimental and numerical study

M Neuner, T Cordes, M Drexel, G Hofstetter - Materials, 2017 - mdpi.com
A new experimental program, focusing on the evolution of the Young's modulus, uniaxial
compressive strength, shrinkage and creep of shotcrete is presented. The laboratory tests …