Search Results - "Xu, Guowen"

Enabling Efficient and Geometric Range Query With Access Control Over Encrypted Spatial Data by Xu, Guowen, Li, Hongwei, Dai, Yuanshun, Yang, Kan, Lin, Xiaodong

“…As a basic query function, range query has been exploited in many scenarios such as SQL retrieves, location-based services, and computational geometry…”
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Transversely isotropic creep behavior of phyllite and its influence on the long-term safety of the secondary lining of tunnels by Xu, Guowen, He, Chuan, Chen, Ziquan, Yang, Qinghao

“…Phyllite, which is a low-grade metamorphic rock with well-developed foliations, is encountered frequently during the construction of tunnels in western China…”
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A Case Study on the Asymmetric Deformation Characteristics and Mechanical Behavior of Deep-Buried Tunnel in Phyllite by Chen, Ziquan, He, Chuan, Xu, Guowen, Ma, Gaoyu, Wu, Di

“…When tunneling through deep-buried layered soft strata, asymmetric deformation of surrounding rock and asymmetric mechanical behavior of supporting structures…”
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Experimental investigation of the anisotropic mechanical behavior of phyllite under triaxial compression by Xu, Guowen, He, Chuan, Su, Ang, Chen, Ziquan

“…The physical and mechanical properties (e.g., strength, permeability, and heat transfer) of anisotropic rocks are affected significantly by weak planes…”
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Progressive failure process of secondary lining of a tunnel under creep effect of surrounding rock by Xu, Guowen, He, Chuan, Yang, Qinhao, Wang, Bo

“…During the operation of tunnels, a problem that is encountered often is the cracking of secondary lining caused by the time-dependent deformation of weak…”
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Energy Damage Evolution Mechanism of Rock and Its Application to Brittleness Evaluation by Chen, Ziquan, He, Chuan, Ma, Gaoyu, Xu, Guowen, Ma, Chunchi

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PTAS: Privacy-preserving Thin-client Authentication Scheme in blockchain-based PKI by Jiang, Wenbo, Li, Hongwei, Xu, Guowen, Wen, Mi, Dong, Guishan, Lin, Xiaodong

“…Recent years have witnessed tremendous academic efforts and industry growth in Internet of Things (IoT). Security issues of IoT have become increasingly…”
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Study on the Mechanical Behavior of a Secondary Tunnel Lining with a Yielding Layer in Transversely Isotropic Rock Stratum by Xu, Guowen, He, Chuan, Wang, Jun, Chen, Ziquan

“…For tunnels excavated in soft layered rock strata, the secondary lining is susceptible to asymmetrical pressure and substantial concrete cracking. To solve…”
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Visco-plastic response of deep tunnels based on a fractional damage creep constitutive model by Xu, Guowen, Gutierrez, Marte, Arora, Ketan, Wang, Xin

“…Hard rock tunnels under high geo-stresses, and weak, soft rock tunnels show evident continued deformation after excavation, which is closely associated with…”
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Fracture evolution of transversely isotropic rocks with a pre-existing flaw under compression tests based on moment tensor analysis by Xu, Guowen, Hu, Xiongyu, Tang, Rui, Hou, Zhenkun

“…A numerical approach based on the particle discrete element theory is adopted to study the fracture evolution of transversely isotropic rocks with a…”
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Adaptive privacy-preserving federated learning by Liu, Xiaoyuan, Li, Hongwei, Xu, Guowen, Lu, Rongxing, He, Miao

“…As an emerging training model, federated deep learning has been widely applied in many fields such as speech recognition, image classification and…”
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Modeling of the creep and nonlinear damage effects of rocks and its application in tunnels by Chen, Ziquan, Gutierrez, Marte, Xu, Guowen, Dong, Weijie

“…The creep and nonlinear damage behavior of rocks are two main factors that can cause large deformations and instability in tunnels. In this paper, uniaxial…”
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A Novel Wedge Anchor System for Double-Layer CFRP Plate Cables: Concept, Theoretical Analysis and FEA by Zhang, Zeping, Bai, Jie, Yue, Qingrui, Xu, Guowen, Liu, Xiaogang

“…This study introduces an innovative wedge anchor for double-layer carbon fiber reinforced polymer (CFRP) plate cable to address the current limitation of…”
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Investigation of Phyllite-based Brazilian tests and fracture failure patterns via AE and PFC3D by Bai, Rongmin, He, Chuan, Xu, Guowen, Wang, Shu, Shu, Yueheng

“…Phyllite, characterized by well-developed foliation, is a low-grade metamorphic rock. This study offers a comprehensive investigation into its failure patterns…”
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Face stability of EPB shield tunnels in multilayered ground with soft sand lying on hard rock considering dynamic excavation process: A DEM study by Wang, Jun, Lin, Guojin, Xu, Guowen, Wei, Yanqing, Li, Shiqi, Tang, Xie, He, Chuan

“…•The dynamic excavation process of EPB shield tunnel in multilayered ground is simulated.•The influence of underlying hard rock on the stability of overlying…”
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Transverse Isotropy of Phyllite Under Brazilian Tests: Laboratory Testing and Numerical Simulations by Xu, Guowen, He, Chuan, Chen, Ziquan, Su, Ang

“…Phyllite is a low-grade, metamorphic rock with well-developed foliation. We characterized the fracture pattern and failure strength of phyllite specimens under…”
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Fracture evolution and energy mechanism of deep-buried carbonaceous slate by Chen, Ziquan, He, Chuan, Wu, Di, Xu, Guowen, Yang, Wenbo

“…In order to study the influence of confining pressure and water content on the mechanical properties, fracture evolution and energy damage mechanism of…”
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Effects of the micro-structure and micro-parameters on the mechanical behaviour of transversely isotropic rock in Brazilian tests by Xu, Guowen, He, Chuan, Chen, Ziquan, Wu, Di

“…Based on the Brazilian test results of 23 kinds of transversely isotropic rocks, five trends are obtained for the variation of normalized failure strength…”
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Propagation and coalescence of two infilled parallel fractures in shale: laboratory testing and DEM simulations by Xu, Guowen, Gutierrez, Marte, Hou, Zhenkun, Li, Xing

“…Filling materials exist widely in natural rock fractures, which can impact rock mechanical behavior. However, only limited research has been performed to study…”
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Discrete element modeling of transversely isotropic rocks with non-continuous planar fabrics under Brazilian test by Xu, Guowen, Gutierrez, Marte, He, Chuan, Meng, Wei

“…A new numerical approach based on the particle discrete element method (PDEM) is developed to investigate the mechanical behavior of transversely isotropic…”
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