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Systematic engineering method for FY-3 satellite ground segment engineering

Dong Chaohua,Yang Zhongdong,Shi Jinming,Zhang Peng

Strategic Study of CAE 2013, Volume 15, Issue 10,   Pages 24-32

Abstract: purpose, this paper gave an introduction on designing FY-3 function, planning the FY-3 satellite and the groundlocating the receiving stations, and scientifically allocating the task for each functional unit of the groundsystem, so that the ground application system was built with realization of optimized overall function

Keywords： FY-3 satellite     instrument capability     ground segment system     systematic engineering     over all design    

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Shield Driven Tunneling in the Complex Layer：Direction Control of Shield and Preventing Segment Crack

Tan Zhongsheng,Hong Kairong,Wan Jianglin,Wang Mengshu

Strategic Study of CAE 2006, Volume 8, Issue 12,   Pages 92-96

Abstract:

The ground layer of the No.2 Metro Line in Guangzhou has the characteristics of mixed ground conditionsFurthermore, it is also difficult to prevent segment crack and local failure and dislocation of segmentThe main cause of segment crack and local failure of segment, were also studied with numerical simulation, and methods to control segment crack were brought forward.

Keywords： mixed ground     tunnel     attitude control     segment crack     segment dislocation    

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Ground Segments for FY Meteorological Satellites

Xu Jianmin,Niu Yinsheng,Dong Chaohua,Zhang Wenjian,Yang Jun

Strategic Study of CAE 2006, Volume 8, Issue 11,   Pages 13-18

Abstract: Ground segments are major components of FY meteorological satellite projects.the programming, key technology and success rate of the operation of the FY meteorological satellite ground

Keywords： FY meteorological satellite     ground segment     satellite application    

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Design scheme and implementation for HY-2 ground segment mission control

Lan Youguo,Lin Mingsen,Xie Chunhua

Strategic Study of CAE 2014, Volume 16, Issue 6,   Pages 13-20

Abstract:

Design scheme and implementation for HY-2 ground segment is introducedMission control subsystem is responsible for task scheduling，and system monitor，is nerve center of groundsegment.

Keywords： HY-2 ground segmentapplication system     architecture     layered scheduling system     operational model    

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Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Frontiers of Structural and Civil Engineering   Pages 1033-1046 doi: 10.1007/s11709-023-0973-y

Abstract: This study focuses on the bending failure performance of a shield tunnel segment.little effect on the cracking load but significantly influenced the failure and ultimate loads of the segmentIt is suggested that in the reinforcement design of the subway segment, the reinforcement ratio and thelongitudinal reinforcement can be chosen in the range of 0.7%–1.2% and 49%–55%, respectively, allowing the segmentuse the reinforcement and exert the design strength, thereby improving the bearing capacity of the segment

Keywords： shield tunnel     bearing capacity     failure mechanism     segment reinforcement    

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Ground segment of the new general of Fengyun popoar orbit meteorological satellite (FY 3) and its data

Lu Naimeng,Dong Chaohua,Yang Zhongdong,Shi Jinming,Zhang Peng

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 10-19

Abstract: The FY-3 ground segment has the capacity of global data acquisition in short latency.

Keywords： FY-3     multi-spectral     three-dimensional     quantitative remote sensing    

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Manufacturing technique and performance of functionally graded concrete segment in shield tunnel

Baoguo MA, Dinghua ZOU, Li XU

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 101-104 doi: 10.1007/s11709-009-0011-8

Abstract: The quality of segment is very important to the service life of shield tunnel.functionally graded materials was introduced to design and produce the functionally graded concrete segment

Keywords： shield tunnel     functionally graded concrete segment (FGCS)     manufacturing technology     performance    

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A redundantly actuated PRPRP radial mechanism in the segment erector of a shield machine for synchronization

Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 463-467 doi: 10.1007/s11465-011-0225-z

Abstract:

The shield machine is a heavy construction machine for tunnel excavation, and the segment erectorHence, this paper proposes a redundantly actuated PRPRP radial mechanism for the segment erector.

Keywords： redundant actuation     parallel mechanisms     five-bar mechanisms     segment erectors     shield machines    

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Drive system design and error analysis of the 6 degrees of freedom segment erector of shield tunneling

Hu SHI, Guofang GONG, Huayong YANG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 369-376 doi: 10.1007/s11465-011-0223-1

Abstract:

Focusing on a segment erector of a shield-tunneling machine developed with 6 degrees of freedom (DOF) and controlled by electro-hydraulic proportional systems, the kinematics of the segment erection processFormulas for calculating the position and attitude error of the grip hand of the segment erector areerror analysis, providing a foundation for practical designing, manufacturing, and assembling of the segment

Keywords： shield tunneling machine     segment erector     kinematics     position and attitude precision    

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Mechanical responses of multi-layered ground due to shallow tunneling with arbitrary ground surface load

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 745-762 doi: 10.1007/s11709-023-0935-4

Abstract: An analytical model based on complex variable theory is proposed to investigate ground responses dueto shallow tunneling in multi-layered ground with an arbitrary ground surface load.The ground layers are assumed to be linear-elastic with full-stick contact between them.in multi-layered ground; thus, it can be used with assurance to estimate the ground movement and surfacecomposite ground.

Keywords： analytical model     mechanical response     multi-layered ground     shallow tunneling     ground surface load    

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The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1200-1213 doi: 10.1007/s11709-019-0546-2

Abstract: The hand hole acts as a weak point and initial damage in the segment joint especially when the circumferentialMoreover, segment joints with MSSF are also tested to evaluate the effects of MSSF on the failure modeand structural performance of the segment joints.A \ /-type crack pattern is always observed before the final failure of the segment joints.The segment joint with MSSF shows higher ultimate bearing capacity and toughness compared to segment

Keywords： shield tunneling     structural synthetic fiber concrete     hand hole     segment joint     ultimate bearing capacity    

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Calculation of prestressed anchor segment by 3D infinite element

Yanfen WANG, Hongyang XIE, Yuanhan WANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 63-66 doi: 10.1007/s11709-009-0006-5

Abstract: coupled with 8-node finite elements to compute the compressive deformation of the prestressed anchor segmentThe results indicate that when the prestressed force acts on the anchor segment, the stresses and displacementsin the rock around the anchor segment are concentrated in the zone center with the anchor axis and are

Keywords： infinite element     prestressed anchor     couple     finite element    

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Sensory innervation of the anterior eye segment in rats: a retrograde tracing study

Haixia LIU MD , Zhiwang LI MD , Min YANG MD , Xiang TIAN MS , Chaoying LI PhD , Lei PEI PhD ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 352-356 doi: 10.1007/s11684-009-0065-y

Abstract: This study aimed to investigate the sensory innervation of the anterior eye segment in rats by retrogradeIn our study, the sensory innervation of distinct elements of the anterior segment of the rat’s

Keywords： trigeminal ganglion     retrograde tracing    

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R&D of the ground-coupled heat pump technology in China

Nairen DIAO, Ping CUI, Junhong LIU, Zhaohong FANG,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 47-54 doi: 10.1007/s11708-009-0080-3

Abstract: The ground-coupled heat pump (GCHP) systems have been identified as one of the best sustainable energyNew models are presented for efficient thermal analysis of ground heat exchangers, of which one- andtwo-dimensional solid cylindrical source models and their analytical solutions are devised to deal with pile ground

Keywords： ground source heat pump     ground heat exchanger     HVAC     China    

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INTERACTIONS BETWEEN ABOVE AND BELOW GROUND PLANT STRUCTURES: MECHANISMS AND ECOSYSTEM SERVICES

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 2,   Pages 197-213 doi: 10.15302/J-FASE-2021433

Abstract:

Interactions between above and below ground parts of plants can be considered under the (overlappingSolar energy powers photosynthesis and transpiration by above ground structures, and drives most wateruptake through roots and supplies energy as organic matter to below ground parts, including diazotrophicNO3– assimilation of above ground parts requires organic N transportInteraction of above and below ground plant parts is an important component of the ecosystem service

Keywords： aerenchyma / carbon accumulation / hormones / phloem / xylem    

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Title Author Date Type Operation

Systematic engineering method for FY-3 satellite ground segment engineering

Dong Chaohua,Yang Zhongdong,Shi Jinming,Zhang Peng

Journal Article

Shield Driven Tunneling in the Complex Layer：Direction Control of Shield and Preventing Segment Crack

Tan Zhongsheng,Hong Kairong,Wan Jianglin,Wang Mengshu

Journal Article

Ground Segments for FY Meteorological Satellites

Xu Jianmin,Niu Yinsheng,Dong Chaohua,Zhang Wenjian,Yang Jun

Journal Article

Design scheme and implementation for HY-2 ground segment mission control

Lan Youguo,Lin Mingsen,Xie Chunhua

Journal Article

Bending failure performance of a shield tunnel segment based on full-scale test and numerical analysis

Journal Article

Ground segment of the new general of Fengyun popoar orbit meteorological satellite (FY 3) and its data

Lu Naimeng,Dong Chaohua,Yang Zhongdong,Shi Jinming,Zhang Peng

Journal Article

Manufacturing technique and performance of functionally graded concrete segment in shield tunnel

Baoguo MA, Dinghua ZOU, Li XU

Journal Article

A redundantly actuated PRPRP radial mechanism in the segment erector of a shield machine for synchronization

Wanghui BU, Zhenyu LIU, Jianrong TAN, Jin CHENG

Journal Article

Drive system design and error analysis of the 6 degrees of freedom segment erector of shield tunneling

Hu SHI, Guofang GONG, Huayong YANG

Journal Article

Mechanical responses of multi-layered ground due to shallow tunneling with arbitrary ground surface load

Journal Article

The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Journal Article

Calculation of prestressed anchor segment by 3D infinite element

Yanfen WANG, Hongyang XIE, Yuanhan WANG

Journal Article

Sensory innervation of the anterior eye segment in rats: a retrograde tracing study

Haixia LIU MD , Zhiwang LI MD , Min YANG MD , Xiang TIAN MS , Chaoying LI PhD , Lei PEI PhD ,

Journal Article

R&D of the ground-coupled heat pump technology in China

Nairen DIAO, Ping CUI, Junhong LIU, Zhaohong FANG,

Journal Article

INTERACTIONS BETWEEN ABOVE AND BELOW GROUND PLANT STRUCTURES: MECHANISMS AND ECOSYSTEM SERVICES

Journal Article