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Article
Dynamic response and failure mode of the twin tunnel-landslide using shaking table tests
Earthquakes are the main factor that provokes landslide deformation and tunnel damage. To study the dynamic response and failure mode of the twin tunnel-landslide, shaking table tests are conducted on tunnels ...
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Article
Elastoplastic modeling cyclic behavior of natural soft clay with principal stress rotation under traffic loading
Subgrade soil subjected to traffic loading imposes significant cyclic principal stress rotation and thus yields complex cyclic behavior. Up to now, the complex cyclic behavior has been validated by experimenta...
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Article
Open AccessDEM modeling direct shearing behavior of sand considering anti-rotation of particle
Considering anti-rotation of sand particles, two-dimensional Discrete Element Method (DEM) has been employed to reproduce direct shear behaviors of sand with different particle distribution sizes, so as to exp...
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Article
Open AccessCracks propagation characteristics of double-hole delay blasting in soft-hard composite rock mass
By researching the distance between blasthole and interface of soft-hard rock strata, as well as the time of delay detonation, blasting effect of the rock mass will be more controllable. Firstly, validity of n...
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Article
Study on Blasting Characteristics of Shallow and Deep Soft-hard Rock Strata Based on Energy Field
The expected blasting effect of rock mass is always affected by the soft-hard rock strata with anisotropic mechanical properties, especially under the influence of in-situ stress. Based on discrete element met...
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Article
Study on toppling deformation of anti-dip slope in centrifuge test based on energy field
Traditional indexes like stress, strain, and displacement can only represent local scale evolutionary characteristics of toppling deformation. The energy can represent not only the deformation characteristics ...
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Article
Open AccessNumerical simulation of size effect of defective rock under compression condition
The existence of various types of damage, small cracks, some large voids and the size of the sample in the rock will make the experimental results show great discreteness. In this paper, based on the results o...
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Article
Experimental and modeling study of water-retention behavior of fine-grained soils with dual-porosity structures
Dual-porosity structures of fine-grained soils can noticeably affect their ability to retain water. This work jointly employs axis translation technique, filter paper method, and vapor equilibrium technique to...
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Article
Constitutive modeling of three-dimensional non-coaxial characteristics of clay
A simple critical state-based constitutive model is proposed to represent the non-coaxial plastic deformations of saturated clay subjected to monotonic shearing with fixed principal stress directions. While ex...
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Chapter and Conference Paper
Influence of Vehicle Braking on Pavement Shakedown Limits
Shakedown analysis has been regarded as a rational pavement design method in recent years. If the value of traffic load does not exceed the critical level (i.e., shakedown limit), pavement will not exhibit con...
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Article
Displacement evolution of reverse-dip rock slope considering the change of the reservoir level
The fluctuation and periodic change of reservoir level are the important incentives that affect the stability of the reverse-dip rock slope. Based on the field monitoring data, this paper investigates the topp...
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Chapter and Conference Paper
Shakedown Analysis of Flexible Pavement on Saturated Subgrade Under Moving Traffic Loading
In this paper, the shakedown behavior of flexible pavement on saturated subsoil subjected to moving vehicle loading is studied. Based on Biot’s dynamic theory of saturated porous media, dynamic stresses of lay...
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Article
Two-dimensional discrete element simulation of the mechanical behavior and strain localization of anisotropic dense sands
This paper presents a microscopic investigation on the effects of initial anisotropy, drainage condition, and consolidation state on the mechanical behavior and strain localization of dense sands. Discrete ele...
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Article
Influences of loading direction and intermediate principal stress ratio on the initiation of strain localization in cross-anisotropic sand
Since cross-anisotropic sand behaves differently when the loading direction or the stress state changes, the influences of the loading direction and the intermediate principal stress ratio (b = (σ ...
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Chapter and Conference Paper
Investigation on Stress-Fabric Relation for Anisotropic Granular Material
In order to build a proper micro-mechanics-based constitutive model, the stress-fabric should be investigated in detail. A micromechanics-based constitutive framework is presented in this work first to predict...
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Chapter and Conference Paper
A Practical Model to Predict Permanent Deformation of Sand Under Cyclic Loading
Sand is the most widely existing granular material for the foundations of extensive constructions which bear various complex cyclic loading such as traffic loading, ocean wave loading and earthquakes. The road...
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Chapter and Conference Paper
Finite Element Modeling of the Bearing Capacity for Transmission Tower Foundations on Expansive Soil
To satisfy the increasing power demands, lots of transmission lines are constructed in the middle-west of China. Expansive soil widely distributes in these areas, and the safety of foundation for transmission...
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Chapter and Conference Paper
Dynamic Shakedown of Cohesive-Frictional Materials Under Moving Traffic Load
Shakedown theory provides a rational tool for prediction of the long-term plastic behavior of pavement subjected to variable or repeated loads. A dynamic lower-bound shakedown solution has been proposed to est...
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Chapter
Dynamic Shakedown Analysis for Anisotropic Material Under Traffic Moving Loading
Shakedown solution is widely used to analyze elastic-plastic behaviors of structures in pavement design. It is an effective way to predict the maximum admissible load (termed ‘shakedown limit’) against excessi...
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Chapter and Conference Paper
Physical and Numerical Modelling of Grouting Induced Enlarged-Base Pile
The grouting induced enlarged-base pile is an uplift pile combining conventional enlarged-base pile with post-grouting technique. This type of uplift pile has great value in engineering practice for its higher...
