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Prototype test study on mechanical characteristics of segmental lining structure of underwater railway

He Chuan,Feng Kun,Yan Qixiang,Qi Chun

Strategic Study of CAE 2012, Volume 14, Issue 10,   Pages 65-72

Abstract: tunnel, Guangzhou Zhujiang River Shiziyang shield tunnel, the prototype test is carried out against its segmentallining structure by using “Multi function Shield Tunnel Structure Test System”.And the mechanical characteristics of segmental lining structure using straight assembling and staggeredThe results show that the mechanical characteristics of segmental lining structure vary from differentstaggered assembling structure.

Keywords： underwater railway shield tunnel     segmental lining structure     prototype test     tenon joint     failure characteristics    

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Deep convolutional neural network for multi-level non-invasive tunnel lining assessment

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 2,   Pages 214-223 doi: 10.1007/s11709-021-0800-2

Abstract: In recent years, great attention has focused on the development of automated procedures for infrastructures control. Many efforts have aimed at greater speed and reliability compared to traditional methods of assessing structural conditions. The paper proposes a multi-level strategy, designed and implemented on the basis of periodic structural monitoring oriented to a cost- and time-efficient tunnel control plan. Such strategy leverages the high capacity of convolutional neural networks to identify and classify potential critical situations. In a supervised learning framework, Ground Penetrating Radar (GPR) profiles and the revealed structural phenomena have been used as input and output to train and test such networks. Image-based analysis and integrative investigations involving video-endoscopy, core drilling, jacking and pull-out testing have been exploited to define the structural conditions linked to GPR profiles and to create the database. The degree of detail and accuracy achieved in identifying a structural condition is high. As a result, this strategy appears of value to infrastructure managers who need to reduce the amount and invasiveness of testing, and thus also to reduce the time and costs associated with inspections made by highly specialized technicians.

Keywords： concrete structure     GPR     damage classification     convolutional neural network     transfer learning    

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Genetic basis of adult-onset nephrotic syndrome and focal segmental glomerulosclerosis

Jian Liu, Weiming Wang

Frontiers of Medicine 2017, Volume 11, Issue 3,   Pages 333-339 doi: 10.1007/s11684-017-0564-1

Abstract: Focal segmental glomerulosclerosis (FSGS) accounts for nearly 20% of NS among children and adults.

Keywords： nephrotic syndrome     focal segmental glomerulosclerosis     genetic    

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Damage on lining concrete in highway tunnels under combined sulfate and chloride attack

Rongrong YIN, Chenchen ZHANG, Qing WU, Baocheng LI, He XIE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 331-340 doi: 10.1007/s11709-017-0421-y

Abstract: The combined effect from sulfate and chloride is one of the important reasons to cause the damage of liningTo investigate the effect of chloride ions on the corrosion of lining concretes under sulfate attack,XRD patterns confirmed that the existence of chloride certainly depressed the corrosion damage on the lining

Keywords： lining concrete     sulfate     chloride     compression     ultrasonic    

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Dynamic response of precast segmental bridge columns under heavy truck impact

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 327-349 doi: 10.1007/s11709-023-0911-z

Abstract: Considering the wide application of precast segmental bridge columns (PSBCs) in engineering practice,

Keywords： precast segmental bridge columns     heavy truck     collision     dynamic response    

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Factors affecting the seismic behavior of segmental precast bridge columns

Haitham DAWOOD,Mohamed ELGAWADY,Joshua HEWES

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 388-398 doi: 10.1007/s11709-014-0264-8

Abstract: manuscript discusses the design parameters that potentially affect the lateral seismic response of segmental

Keywords： finite element analysis     concrete     precast units     bridges    

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Self-centring segmental retaining walls—A new construction system for retaining walls

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 980-1000 doi: 10.1007/s11709-021-0737-5

Abstract: Four post-tensioned segmental retaining walls (PSRWs) were experimentally tested.

Keywords： retaining wall     segmental     precast concrete     unbonded post-tensioning     water retaining wall     seawall    

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Stress observation of shaft lining wall during construction and initial operation

Wen Dehua

Strategic Study of CAE 2012, Volume 14, Issue 2,   Pages 80-84

Abstract:

For searching the stress and deformation law of blended shaft-liningduring construction and initial operation, sensors were buried in interior and exterior wall of shaft-liningWith the law, we can forecast the long-term safety of shaft lining and provide scientific decision evidence

Keywords： shaft lining monitoring     thick topsoil     strain     additional force    

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Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 480-501 doi: 10.1007/s11709-017-0435-5

Abstract: In this paper, semi 3D models for segmental Bridge decks are created in ABAQUS CFD program with the support

Keywords： vortex induced vibration     reynolds number     kinetic energy     vorticity     latin hypercube sampling    

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Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected

Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1495-1509 doi: 10.1007/s11709-019-0574-y

Abstract: XFEM-BCQO) is adopted to quantify the optimum values of four design parameters for a circular tunnel liningThe parameters are: tunnel lining thickness, tunnel diameter, tunnel lining concrete modulus of elasticityand tunnel lining concrete density.Numerical simulations of the tensile damage in the tunnel lining due to a real earthquake in the literaturecoupled approach manifested a significant capability to predict the cracks and spalling of the tunnel lining

Keywords： ovaling deformation     monte carlo sampling     XFEM-BCQO     maximum principal stress    

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Digital microfluidics: A promising technique for biochemical applications

He WANG, Liguo CHEN, Lining SUN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 510-525 doi: 10.1007/s11465-017-0460-z

Abstract:

Digital microfluidics (DMF) is a versatile microfluidics technology that has significant application potential in the areas of automation and miniaturization. In DMF, discrete droplets containing samples and reagents are controlled to implement a series of operations via electrowetting-on-dielectric. This process works by applying electrical potentials to an array of electrodes coated with a hydrophobic dielectric layer. Unlike microchannels, DMF facilitates precise control over multiple reaction processes without using complex pump, microvalve, and tubing networks. DMF also presents other distinct features, such as portability, less sample consumption, shorter chemical reaction time, flexibility, and easier combination with other technology types. Due to its unique advantages, DMF has been applied to a broad range of fields (e.g., chemistry, biology, medicine, and environment). This study reviews the basic principles of droplet actuation, configuration design, and fabrication of the DMF device, as well as discusses the latest progress in DMF from the biochemistry perspective.

Keywords： digital microfluidics     electrowetting on dielectric     discrete droplet     biochemistry    

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Distinct roles of ASIC3 and TRPV1 receptors in electroacupuncture-induced segmental and systemic analgesia

Juanjuan Xin,Yangshuai Su,Zhaokun Yang,Wei He,Hong Shi,Xiaoyu Wang,Ling Hu,Xiaochun Yu,Xianghong Jing,Bing Zhu

Frontiers of Medicine 2016, Volume 10, Issue 4,   Pages 465-472 doi: 10.1007/s11684-016-0482-7

Abstract: ion channel 3 (ASIC3) and transient receptor potential vanilloid 1 (TRPV1) receptors in EA-induced segmentalThe segmental increase in pain thresholds induced by 0.3 mA EA was significantly reduced in ASIC3segmental analgesia of EA with lower intensity is partially mediated by ASIC3 receptor on A&beta

Keywords： electroacupuncture     analgesia     ASIC3     TRPV1     C-fiber reflex    

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Experimental monitoring of the strengthening construction of a segmental box girder bridge and field

Ali Fadhil NASER, Zonglin WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 308-320 doi: 10.1007/s11709-012-0140-3

Abstract: Prestressed concrete segmental box girder bridges are composed of short concrete segments that are eitherare to monitor the construction process of the external prestressing tendons to strengthen the bridge structure

Keywords： prestressed concrete     box girder     monitoring     external tendons     strain     deflection    

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Full scale model test of segmental precast concrete box girder with external and internal tendons

Zheng Kaiqi,Bu Hongqi,Liu Zhao,Hui Zhuo,Lv Zhitao

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 89-94

Abstract:

To investigate the structural behavior of segmental precast prestressed

Keywords： segmental precast     model test     external prestress     full scale test    

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Progress in Study of Standard Room/Corner Fire Test of Lining Materials on Enclosure

Yang Yun,Zhang Heping,Liu Jiyang

Strategic Study of CAE 2003, Volume 5, Issue 4,   Pages 55-60

Abstract: It's mainly used to evaluate lining materials on enclosure.progress in study on fire behavior of linings, which is under this method，including the researches of liningFurthermore, the application of results on the classification and fire hazard evaluation of lining materials

Keywords： lining materials     full-scale     ISO 9705     room/corner fire test    

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Title Author Date Type Operation

Prototype test study on mechanical characteristics of segmental lining structure of underwater railway

He Chuan,Feng Kun,Yan Qixiang,Qi Chun

Journal Article

Deep convolutional neural network for multi-level non-invasive tunnel lining assessment

Journal Article

Genetic basis of adult-onset nephrotic syndrome and focal segmental glomerulosclerosis

Jian Liu, Weiming Wang

Journal Article

Damage on lining concrete in highway tunnels under combined sulfate and chloride attack

Rongrong YIN, Chenchen ZHANG, Qing WU, Baocheng LI, He XIE

Journal Article

Dynamic response of precast segmental bridge columns under heavy truck impact

Journal Article

Factors affecting the seismic behavior of segmental precast bridge columns

Haitham DAWOOD,Mohamed ELGAWADY,Joshua HEWES

Journal Article

Self-centring segmental retaining walls—A new construction system for retaining walls

Journal Article

Stress observation of shaft lining wall during construction and initial operation

Wen Dehua

Journal Article

Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental

Nazim Abdul NARIMAN

Journal Article

Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected

Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD

Journal Article

Digital microfluidics: A promising technique for biochemical applications

He WANG, Liguo CHEN, Lining SUN

Journal Article

Distinct roles of ASIC3 and TRPV1 receptors in electroacupuncture-induced segmental and systemic analgesia

Juanjuan Xin,Yangshuai Su,Zhaokun Yang,Wei He,Hong Shi,Xiaoyu Wang,Ling Hu,Xiaochun Yu,Xianghong Jing,Bing Zhu

Journal Article

Experimental monitoring of the strengthening construction of a segmental box girder bridge and field

Ali Fadhil NASER, Zonglin WANG

Journal Article

Full scale model test of segmental precast concrete box girder with external and internal tendons

Zheng Kaiqi,Bu Hongqi,Liu Zhao,Hui Zhuo,Lv Zhitao

Journal Article

Progress in Study of Standard Room/Corner Fire Test of Lining Materials on Enclosure

Yang Yun,Zhang Heping,Liu Jiyang

Journal Article