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Analytical algorithms of compressive bending capacity of bolted circumferential joint in metro shield

Frontiers of Structural and Civil Engineering   Pages 901-914 doi: 10.1007/s11709-023-0915-8

Abstract: The integrity and bearing capacity of segment joints in shield tunnels are associated closely with thea case study is performed to verify the rationality of the simplified theoretical analysis for the segmentjoint via numerical simulations and experiments.The method for optimizing the joint flexural stiffness is clarified.study can provide a theoretical basis for optimizing the design and prediciting the damage of bolted segment

Keywords： shield tunnel     segment joint     joint structural model     failure mechanism    

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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 circumferentialThe experiment results show that the hand hole becomes the weakest point of the segment joint under ultra-highThe segment joint with MSSF shows higher ultimate bearing capacity and toughness compared to segmentjoint with common concrete.Besides, the MSSF improves the initial cracking load and anti-spallling resistance of the segment joint

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

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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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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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Safety Guarantee Measures for Subsea Shield Tunnel Segments Based on Life Cycle Deterioration Analysis

Liu Sijin,He Chuan,Sun Qi and Feng Kun

Strategic Study of CAE 2017, Volume 19, Issue 6,   Pages 52-60 doi: 10.15302/J-SSCAE-2017.06.008

Abstract:

The segment joint is the weak link in the lining structure of subseaBased on an analysis of existing research into segment joint erosion and deterioration, a tunnel servicejoint over its whole life cycle was subsequently established.The law governing the progressive erosion and deterioration of the segment joints of subsea tunnels overeffects of seawater pressure and ion concentration on the erosion, deterioration, and steel corrosion of segment

Keywords： shield tunnel     safety guarantee     deterioration analysis     ion erosion     segment joint    

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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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Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1095-1104 doi: 10.1007/s11709-019-0538-2

Abstract: Side joint is the weak region of PCS concrete frame and has great influence on seismic behavior of theThus systematically study on the seismic behavior of PCS concrete side joint is necessary.This paper presents a finite element study on behavior of the side joint under seismic loading.

Keywords： PCS concrete side joint     numerical simulation     fiber-beam element joint model     solid element joint model    

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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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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: Furthermore, 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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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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Assembling and defect treatment of large-diameter shield segment

Cheng Xuewu,Xu Weiqing,Yang Zhiyong

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 89-93

Abstract:

In the paper, the segment assembling techniques of large-diameter shieldand the apparent damage reasons and repair technology of large-diameter shield reinforced concrete segmentbelow hance, respectively, assuring the good strength and surface quality of large-diameter shield segment

Keywords： large-diameter shield     segment     assembling     repair    

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Dynamic characteristics of a magnetorheological pin joint for civil structures

Yancheng LI,Jianchun LI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 15-33 doi: 10.1007/s11465-014-0283-0

Abstract:

Magnetorheological (MR) pin joint is a novel device in which its joint moment resistance can be controlledThe smart pin joint is intended to be used as a controllable connector between the columns and beamsstructure, the main purpose of this paper is to test and characterise the hysteretic behaviour of MR pin jointA test scheme is designed to obtain the dynamic performance of MR pin joint in the dominant earthquake

Keywords： Magnetorheological pin joint     hyperbolic hysteresis model experimental testing frequency dependence    

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Human hip joint center analysis for biomechanical design of a hip joint exoskeleton Article

Wei YANG,Can-jun YANG,Ting XU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 8,   Pages 792-802 doi: 10.1631/FITEE.1500286

Abstract: The motions of the hip joint center with variation of the flexion angle were measured and the resultingThe humanexoskeleton model was analyzed to further validate the decrease of the hip joint internal forceduring hip joint flexion or abduction by applying the resulting design.

Keywords： Hip joint exoskeleton     Hip joint center     Compatible joint     Human-machine interaction force    

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Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 289-299 doi: 10.1007/s11465-009-0064-3

Abstract: The paper proposes an identification method of the dynamic stiffness matrix of a bearing joint regionThe dynamic stiffness matrix of the bearing joint region can be identified by measuring the matrix ofresults, and there is very high reliability in the identified dynamic stiffness matrix of the bearing joint

Keywords： frequency response function (FRFs)     dynamic stiffness     finite element     synthetic substructure method     joint    

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Title Author Date Type Operation

Analytical algorithms of compressive bending capacity of bolted circumferential joint in metro shield

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

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

Journal Article

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

Baoguo MA, Dinghua ZOU, Li XU

Journal Article

Safety Guarantee Measures for Subsea Shield Tunnel Segments Based on Life Cycle Deterioration Analysis

Liu Sijin,He Chuan,Sun Qi and Feng Kun

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

Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Journal Article

Calculation of prestressed anchor segment by 3D infinite element

Yanfen WANG, Hongyang XIE, Yuanhan WANG

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

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

Assembling and defect treatment of large-diameter shield segment

Cheng Xuewu,Xu Weiqing,Yang Zhiyong

Journal Article

Dynamic characteristics of a magnetorheological pin joint for civil structures

Yancheng LI,Jianchun LI

Journal Article

Human hip joint center analysis for biomechanical design of a hip joint exoskeleton

Wei YANG,Can-jun YANG,Ting XU

Journal Article

Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Journal Article