Time-Dependent Behavior of Saint-Martin-La-Porte Exploratory Galleries: Field Data Processing and Numerical Modeling of Excavation in Squeezing Rock Conditions

For a better evaluation of a grouted zone during and after tunnel construction involving weak soil layers, it is necessary to estimate the characteristics of grouted zone effectively. This study suggests a method that can be used for characterizing the time-dependent behavior of pre-reinforced zones around a large section of tunnel in soft ground using elastic waves. Experimental tests were performed to characterize the time-dependent behavior of the pre-reinforced zone. Experimental results show that shear strengths as well as elastic wave velocities increase with the curing time. Thus, shear strength or strength parameters can be uniquely correlated to elastic wave velocities. It is possible to characterize grouted soils around tunnel using elastic waves. Time-dependent strength and stiffness parameters in the experimental tests were applied in a numerical modeling of a large-section tunnel in soft ground, taking into account its construction sequence. According to the results of the numerical modeling, displacement results for fewer than 2~3 days of constant time boundary conditions are nearly identical to the analysis results of the time-dependent condition. The proposed analysis method, which combines experimental and numerical procedures while considering the time-dependent effect of the pre-reinforced zone on the tunnel behavior, will provide a reliable and practical design basis and a means of analysis for large-section tunnels in soft ground.

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Time-dependent behavior of Self-compacting concrete

SCC'2005-China - 1st International Symposium on Design, Performance and Use of Self-Consolidating Concrete ◽

10.1617/2912143624.039 ◽

2005 ◽

Cited By ~ 2

Author(s):

Z. Yu

Keyword(s):

Time Dependent ◽

Self Compacting Concrete ◽

Dependent Behavior

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Time-dependent behavior of nitric oxide excited states under the effect of electron impact

Physics of Plasmas ◽

10.1063/5.0029485 ◽

2021 ◽

Vol 28 (2) ◽

pp. 024503

Author(s):

Mohammed amin Ferdi ◽

Abdelaaziz Bouziane ◽

Mourad Djebli

Keyword(s):

Nitric Oxide ◽

Electron Impact ◽

Excited States ◽

Time Dependent ◽

Dependent Behavior

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Time-Dependent Behavior of Posttensioned Concrete Pavements under Environmental Loading

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/2154-05 ◽

2010 ◽

Vol 2154 (1) ◽

pp. 44-56 ◽

Cited By ~ 1

Author(s):

Seongcheol Choi ◽

Moon C. Won

Keyword(s):

Time Dependent ◽

Concrete Pavements ◽

Environmental Loading ◽

Dependent Behavior ◽

Posttensioned Concrete

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Time-dependent behavior of retaining piles during pre-excavation dewatering in multi-layered saturated soils

Computers and Geotechnics ◽

10.1016/j.compgeo.2021.104300 ◽

2021 ◽

Vol 137 ◽

pp. 104300

Author(s):

Yi Chong Cheng ◽

Ri Hong Zhang ◽

Kui Hua Wang ◽

Zhi Yong Ai

Keyword(s):

Time Dependent ◽

Saturated Soils ◽

Dependent Behavior

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The flow properties of honey–malt spread

Food Science and Technology International ◽

10.1177/1082013217695175 ◽

2017 ◽

Vol 23 (5) ◽

pp. 415-425 ◽

Cited By ~ 2

Author(s):

M Dianat ◽

M Taghizadeh ◽

F Shahidi ◽

SMA Razavi

Keyword(s):

Flow Behavior ◽

Time Dependent ◽

Malt Extract ◽

Barley Malt ◽

First Order ◽

Dependent Behavior ◽

Thixotropic Behaviour ◽

Order Stress ◽

Temperature Levels ◽

Independent Behavior

In this study, the effect of barley malt extract at two brix levels (74 and 79 °Bx) and three ratios of malt extract/honey (65:35, 70:30 and 75:25) on the flow behavior properties of honey–malt spread at three temperature levels (35 ℃, 45 ℃ and 55 ℃) was investigated. Time-dependent behavior data of the spread samples were appropriately fitted to the Weltman, first-order stress decay with a zero stress value and first-order stress decay with a non-zero stress value models. Also, the Power-law, Herschel–Bulkley, Casson and Bingham models were used for curve fitting the time-independent behavior data. Regarding the R2 and root mean square error coefficients, the first-order stress decay with a non-zero stress value and Herschel–Bulkley models were selected as the suitable models to describe the flow behavior of samples. The results for time-dependent properties showed that spread samples exhibit a thixotropic behaviour, as the viscosity for all samples decreased with increase in shearing time at a constant shear rate of 50 s−1.

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Time-Dependent Behavior and Fracture of Functionally Graded Thermal Barrier Coatings under Thermal Shock

Materials Science Forum ◽

10.4028/www.scientific.net/msf.492-493.379 ◽

2005 ◽

Vol 492-493 ◽

pp. 379-384 ◽

Cited By ~ 2

Author(s):

Klod Kokini ◽

Sudarshan V. Rangaraj

Keyword(s):

Thermal Shock ◽

Thermal Barrier Coatings ◽

Functionally Graded ◽

Yttria Stabilized Zirconia ◽

Time Dependent ◽

Thermal Barrier ◽

Stabilized Zirconia ◽

Barrier Coatings ◽

Dependent Behavior ◽

Bond Coat Alloy

The thermal fracture and its dependence on time-dependent behavior in functionally graded yttria stabilized zirconia - NiCoCrAlY bond coat alloy thermal barrier coatings was studied. The response of three coating architectures of similar thermal resistance to laser thermal shock tests was considered, experimentally and computationally.

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