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The deformation coordination-dominated design of yielding supports applied in large deformation tunnels
Yielding supports have shown significant advantages in overcoming the problems of large deformations caused by tunnelling in squeezing ground. The purpose of this study is to provide an analytical design metho...
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Article
Open AccessTheoretical investigation of electromagnetic-thermal coupling of double-layer cylindrical concrete under microwave irradiation
Many experiments have been performed to study the heating properties of concrete under microwave irradiation. Microwave provides the non-uniform heating process, which cannot be reflected clearly through the e...
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Chapter
Constant Seepage Pressure Effect on Creep Fracture
High seepage pressure promotes the growth of microcracks in brittle rock, which is of great significance to the micro–macro mechanism of rock. Based on Chap. 5, this chapter p...
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Cyclic Seepage Pressure Effect on Creep Fracture
Deep underground projects often face complex geological environments such as high stress and pore pressure, making the disasters of underground engineering rocks induced by rock instability widespread.
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High Temperature Heat-Treated Effect on Creep Fracture
The creep failure behavior of brittle rocks subsequent to high-temperature heat treatment holds significant implications for the advancement of deep subsurface resource utilization.
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Chemical Effect of Water on Creep Fracture
The safety and stability of rock engineering are closely related to water, such as roadways, dams, tunnels, and underground chambers will inevitably be affected by groundwater. The physical, chemical, and mech...
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Chapter
Introduction
Static creep fracture in brittle solids (e.g., glass, ceramic, concrete, ice and rock et al.) has a great significance for the evaluation of material lifetime in engineering application (e.g., deep underground...
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Chapter
Loading and Unloading Path Effect on Creep Fracture
The stress path has great influence on creep properties of brittle rocks, which provides information on understanding the deformation behavior and time-delayed rockburst mechanism for surrounding rock during e...
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Crack Angle Effect on Creep Fracture
In brittle rock, inclination of microcracks greatly influences its mechanical behavior. Due to the complex distribution of numerous initial microcracks in brittle rocks, effects of microcrack inclination on st...
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Crack Recovery During Creep Fracture
Fatigue failure under cyclic static loading and unloading (i.e., cyclic/fatigue creep failure) in brittle rocks has a great significance for the evaluation of lifetime in underground engineering. The visco-ela...
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Chapter
Static Creep Fracture Mechanism
Brittle rock deformation brings high hazards on the stability of rock mass during deep underground excavation and/or geological evolvement. Natural rocks intrinsically exist numerous microcracks. Microcrack gr...
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Shear Strength Evolution During Creep Fracture
Shear fracture triggered by subcritical crack extension in intact brittle rocks under long-term compressive loading plays a significant role in the evaluation of earthquake mechanisms. Numerous studies into sh...
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Crack Nucleation During Creep Fracture
Some stress drops appear during the process of deformation under triaxial compressive tests in intact brittle rocks in Fig. 6.1, and each stress drop is associated with an individual shear band caused by strai...
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Dynamic Damage Effect on Creep Fracture
After the excavation or operation stage of deep underground engineering caverns, the surrounding rock masses bear constant initial ground stress loads, and rock deformation at this time is creep deformation.
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Article
Open AccessNonlinear analysis on electrical properties in a bended composite piezoelectric semiconductor beam
In this paper, the interactions between the transverse loads and the electrical field quantities are investigated based on the nonlinear constitutive relation. By considering a composite beam consisting of a p...
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Article
A unified design model for estimating tunnel performance considering multiple excavation stoppages
In tunnel construction, excavation stoppages are often encountered due to many irresistible factors. This study reveals the influence mechanism of excavation stoppages on tunnel mechanical response by using ma...
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Article
The current status and future of solid waste recycled building bricks
Solid waste (SW) has become a problem hindering the economic and social development. Achieving the full green cycle from raw material to production of recycled building bricks (RBB) using SW is the focus of fu...
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Article
Determination of Stiffness of Circumferential Yielding Lining Considering the Shotcrete Hardening Property
The safety of circumferential yielding lining is influenced significantly by the shotcrete hardening property. However, presently, negligible research attention has been paid to this topic. This study aims to ...
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Article
An extended 3D limit analysis of slope stability considering prestressed anchor cables reinforcement
Prestressed anchor cables have been extensively utilized in slope reinforcement engineering. Combining limit analysis with the strength reduction method (SRM), this article presents a new method to assess the ...
