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Mun-Beom Shin, Dong-Su Park and Young-Kyo Seo
Large-deformation finite element (LDFE) analysis with the coupled Eulerian?Lagrangian (CEL) technique for large-deformation soil functions without twisting or distorting the mesh. However, the model does not consider the strain-softening and strain-rate ...
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Wenbo Chen, Dingli Zhang, Qian Fang, Xuanhao Chen and Tong Xu
The small strain theory underestimates the self-bearing capacity of rock masses, especially for a soft rock tunnel under high geostress. To perform an efficient and accurate calculation and provide a reference for the stiffness design of a tunnel, the fi...
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Xianyang Yu, Jinhao Xie, Yanju Wu, Qiuhong Wu, Zizheng Zhang and Hai Wu
A dynamic numerical method is established to simulate the stability of the surrounding rocks of the retained roadway in FLAC3D, along with a double-yield constitutive model to simulate the re-compaction process of gangue and a strain-softening constituti...
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Duohua Wu, Zhiwen Li, Juli Li, Bo Peng and Hui Shen
To reduce the failure probability of rigid supporting structures caused by large deformation of deeply buried high-stress soft rock roadways, the mechanical properties and failure features of basalt fiber-rubber granular concrete (BFRGC) are investigated...
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Ali Ghorbani, Hadi Hasanzadehshooiili and Lukasz Sadowski
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Wadslin Frenelus, Hui Peng and Jingyu Zhang
The stability of deep soft rock tunnels under seepage conditions is of particular concern. Aiming at thoroughly discussing seepage actions and their consequences on the support schemes of such structures, the host rocks of the Weilai Tunnel situated in t...
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Jonathan Tyrer, Chrysothemis Paraskevopoulou, Ravi Shah, Richard Miller and Michael Kavvadas
Urban tunnelling can be highly challenging, especially in areas where limited ground settlements and environmental disturbance is required. Mechanised tunnelling is usually preferred in such ground environments, specifically Slurry or EPBM (Earth Pressur...
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Kasumi Morita, Masashi Mouri, Riccardo Fincato and Seiichiro Tsutsumi
This paper investigates the fatigue cyclic deformation behavior of mid-carbon steel. Uniaxial tensile loading tests and fatigue tests under constant and multi-step amplitude loading steps are performed to characterize the influence of loading history. Th...
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Gamze S. Bas and Erol Sancaktar
The focus of our study is to identify physical properties of different impact-resistant/toughened structural adhesives and identify/develop an elastic-viscoelastic-plastic model as a function of loading rate by using Ludwik-type equations to be able to p...
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Tae-Young Kwak, Ka-Hyun Park, Joonyoung Kim, Choong-Ki Chung and Sung-Ha Baek
Identifying the spatial distribution of deformation and shear band characteristics is important for accurately modeling soil behavior and ensuring the safety of nearby geotechnical structures. However, most research on the shear behavior of soils has foc...
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Lu Li, Meng Zang, Rongtang Zhang and Haijun Lu
Consolidated undrained triaxial shear tests were performed on undisturbed saturated structured clay at three unloading rates (0.1, 0.25, and 2.5 kPa/min) using a GDS triaxial system to determine the effects of different unloading rates and unloading stre...
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Sheng Zhang, Wei Chen, Deping Gao, Liping Xiao and Longbao Han
The SHPB test method with special measures is developed to study the dynamic compression mechanical properties of the aluminum honeycomb structures at a high strain rate. The stress hardening and softening effects are found, respectively.
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Hao Li, Xie-Fei Ding, Zheng-Nan Yin and Heng Xiao
A new elastoplastic J 2 -flow models with thermal effects is proposed toward simulating thermo-coupled finite deformation behaviors of shape memory polymers. In this new model, an elastic potential evolving with development of plastic flow is inco...
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Jiarun Tang and Dongxia Chen
Granite residual soil (GRS) exhibits favorable engineering properties in its natural state. However, a hot and rainy climate, combined with vibrations generated during mechanical construction, can cause a notable decrease in its strength. In this study, ...
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Hao Chai, Xi?an Li, Biao Qin, Weiping Wang and Mani Axel
The volumetric change in unsaturated loess during loading causes serious damage to the foundation and structure, accompanied by changes in hydraulic conditions. Therefore, quantifying the change in the load effect of loess under hydraulic coupling is of ...
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Zhe Mei, Anfeng Xiao, Jiahao Mei, Jinqiu Hu and Peng Zhang
In order to study the variation law of shear frictional characteristics of the steel pipe jacking and sand interface under different working conditions, the shear stress?strain curve between five different particle sizes of sand and steel pipe jacking un...
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Yujing Jiang, Baocheng Li, Changsheng Wang, Hengjie Luan, Sunhao Zhang, Qinglin Shan and Xianzhen Cheng
To study the shear deformation and failure characteristics of a wellbore and the interaction mechanism with its surrounding rocks induced by a layer slip during natural gas hydrates (NGHs) extraction, this paper conducted a numerical simulation study of ...
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Kangyu Wang, Zhenhuan Chen, Zhe Wang, Qianshen Chen and Dihui Ma
Calcareous sand is a special marine soil rich in calcium carbonate minerals, characterized by brittle particles. It is, therefore, widely used as a filling material in the construction of islands and reefs. In this study, a series of cyclic tri-axial tes...
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Yuqi Sun, Yiqun Zhang, Li Liu, Jingsheng Lu, Shouceng Tian and Gensheng Li
Natural gas hydrates occupy an important position in the development of clean energy around the world in the 21st century. It is of great significance to research the mechanical properties of methane hydrate-bearing sediment (MHBS). In this paper, gas-sa...
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Mingyu Li, Wenjing Sun and Zhanyang Chen
Adding biochar to soil can improve the soil?s physical?chemical properties, microscopic pore structure, and bacterial habitat. This affects the soil?s strength characteristics and the oxidization of methane. Using a Humboldt pneumatic direct shear instru...
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