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

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: Despite the wide application of steel fiber or synthetic fiber in the tunneling, limited researches focuson the structural responses of segment joint with macro structural synthetic fiber (MSSF).In this paper, a 1:2 reduced-scale experiment was conducted to study the structural performance of theSpecial attention is paid to failure mode and structural performance (bearing capacity, deformation,with MSSF shows higher ultimate bearing capacity and toughness compared to segment joint with common concrete

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

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Structural performance of a façade precast concrete sandwich panel enabled by a bar-type basalt fiber-reinforced

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 122-137 doi: 10.1007/s11709-022-0894-1

Abstract: In this study, a novel diagonally inserted bar-type basalt fiber reinforced polymer (BFRP) connectorproposed, aiming to achieve both construction convenience and partially composite behavior in precast concreteFirst, pull-out tests were conducted to evaluate the anchoring performance of the connector in concreteprimarily indicated that 1) the bar-type BFRP connector can achieve a reliable anchorage system in concrete

Keywords： precast concrete sandwich panel     basalt fiber reinforced polymer     pull-out performance     shear performance    

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Crack detection for wading-concrete structures using water irrigation and electric heating

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 368-377 doi: 10.1007/s11709-022-0926-x

Abstract: Cracking in wading-concrete structures has a worse impact on structural safety compared with conventionalconcrete structures.accurate and timely monitoring of crack development plays a significant role in the safety of wading-concreteBased on this, a novel crack-identification method for underwater concrete structures is presented.A series of tests was conducted on a reinforced-concrete beam using this system.

Keywords： structural health monitoring     underwater concrete structure     fiber Bragg grating     crack detection     temperature    

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Hollow-fiber gas penetration electrodes efficiently produce renewable synthetic fuels

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 700-705 doi: 10.1007/s11708-022-0842-8

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Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 411-428 doi: 10.1007/s11709-023-0928-3

Abstract: In this study, ultrahigh-performance fiber-reinforced concrete (UHPFRC) used in a type B70 concrete sleeperThe main parameters investigated are the steel fiber volume fractions (0%, 0.5%, 1%, and 1.5%).Subsequently, the results of the study are applied to UHPFRC sleepers with different concrete volumesstudy results show that the behavior of UHPFRC sleepers improves significantly when the amount of steel fiberSleepers manufactured using UHPFRC with a steel fiber volume fraction of 1% and a concrete volume less

Keywords： pre-stressed concrete sleeper     ultrahigh performance fiber-reinforced concrete     pull-out test     staticbending test     steel fiber     aspect ratio     volume fraction    

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Structural health monitoring with fiber optic sensors

F. ANSARI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 103-110 doi: 10.1007/s11465-009-0032-y

Abstract: Optical fiber sensors have been successfully implemented in aeronautics, mechanical systems, and medicalbasic principles pertaining to practical health monitoring of civil engineering structures with optical fiber

Keywords： Bridges     structural health monitoring     smart skins     cracks     strains     displacements     fiber optic sensors     FBG    

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Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors

Zhupeng ZHENG, Xiaoning SUN, Ying LEI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 316-319 doi: 10.1007/s11465-009-0040-y

Abstract: Corrosion of steel and rebar in concrete structures is one of the most frequent reasons for civil infrastructureIn this paper, using fiber Bragg grating (FBG), a corrosion sensor for monitoring steel rebars embeddedin a concrete structure is developed and validated by experiments., an FBG packaged with fiber-reinforced plastics (FRP) is wrapped on the steel bar.During corrosion, the increase in the bar diameter leads to the increase in fiber strain, which can be

Keywords： fiber Bragg grating (FBG)     corrosion     concrete structures     accelerated corrosion test    

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Material Mechanical Properties Necessary for the Structural Intervention of Concrete Structures Article

Tamon Ueda

Engineering 2019, Volume 5, Issue 6,   Pages 1131-1138 doi: 10.1016/j.eng.2019.02.012

Abstract:

Structural intervention involves the restoration and/or upgrading of the mechanical performances ofIn addition to concrete and steel, which are typical materials for concrete structures, various fiber-reinforcedIn order to predict structural performance, it is necessary to develop a generic method that is applicablestrength at the interface between the substrate concrete and an externally bonded material.This paper presents the mechanical properties of substrate concrete and relevant intervention material

Keywords： Structural intervention     High fracturing strain     No yielding     Low stiffness     Roughness     fiber-reinforced    

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Fatigue shear performance of concrete beams reinforced with hybrid (glass-fiber-reinforced polymer+ steel

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 576-594 doi: 10.1007/s11709-021-0728-6

Abstract: Reinforced concrete beams consisting of both steel and glass-fiber-reinforced polymer rebars exhibitFor specimens that failed by fatigue shear, all the glass-fiber-reinforced polymer stirrups and someThe fatigue strength of the glass-fiber-reinforced polymer stirrups in the specimens was considerablytests on the glass-fiber-reinforced polymer bar, and the failure modes were different.Glass-fiber-reinforced polymer stirrups were subjected to fatigue tension and shear, and failed owing

Keywords： fatigue     shear     hybrid stirrups     hybrid reinforcement     fiber-reinforced polymer    

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Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

Frontiers of Structural and Civil Engineering   Pages 1341-1356 doi: 10.1007/s11709-023-0988-4

Abstract: investigated the influence of freeze–thaw cycling on the dynamic splitting tensile properties of steel fiberreinforced concrete (SFRC).were conducted using four loading rates (0.002, 0.02, 0.2, and 2 mm/s) on specimens with four steel fibercaused by freeze–thaw cycling was aggravated with increasing loading rate but mitigated by increasing fiber

Keywords： steel fiber reinforced concrete     freeze–thaw cycling     Brazilian disc splitting test     acoustic emission    

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Shear assessment of compression flanges of structural concrete T-beams

Bj?rn SCHüTTE,Viktor SIGRIST

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 354-361 doi: 10.1007/s11709-014-0082-z

Abstract: As is known, strut-and-tie models represent the force flow within a structural member at ultimate.classical assumptions have to be adapted; in particular by considering the strain dependence of the concrete

Keywords： concrete structures     structural assessment     stress field analysis     shear    

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The damage evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 316-328 doi: 10.1007/s11709-022-0810-8

Abstract: To study the damage evolution behavior of polypropylene fiber reinforced concrete (PFRC) subjected toThe effect of sulfate attack relative to time and fiber hybridization were analyzed and the compressionPFRC could still produce AE signals after peak load due to drawing effect of polypropylene fiber.−0.056 respectively after 150 d of corrosion, indicating that the advantage of hybrid polypropylene fiberwas more obvious than plain concrete and single-doped PFRC.

Keywords： polypropylene fiber reinforced concrete     sulfate attack     damage evolution behavior     acoustic emission    

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Behavior of steel fiber–reinforced high-strength concrete at medium strain rate

Chujie JIAO, Wei SUN, Shi HUAN, Guoping JIANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 131-136 doi: 10.1007/s11709-009-0027-0

Abstract: Impact compression experiments for the steel fiber–reinforced high-strength concrete (SFRHSC) at mediumimproved remarkably because of the superposition effect of the aggregate high-strength matrix and steel fiber

Keywords： steel fiber–reinforced high-strength concrete (SFRHSC)     high strain rates     split Hopkinson press bar (SHPB    

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Shear behavior of ultra-high-performance concrete beams prestressed with external carbon fiber-reinforced

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1426-1440 doi: 10.1007/s11709-021-0783-z

Abstract: The ultra-high-performance concrete (UHPC) and fiber-reinforced polymer (FRP) are well-accepted high-performanceThe combination of these advanced materials could contribute to improvement of structural performancethen applied to evaluate the equations given in different codes/recommendations for FRP-reinforced concreteequation was proposed to take into account the effect of the shear span to depth ratio and the steel fiber

Keywords： beam     external prestressing     ultra-high-performance concrete     fiber-reinforced polymers     shear behavior    

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Fused structures for safer and more economical constructions

Yu-Fei WU, Ying-Wu ZHOU, Biao HU, Xiaoxu HUANG, Scott SMITH

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 1-9 doi: 10.1007/s11709-019-0541-7

Abstract: The use of a fuse will also facilitate safer use of advanced construction materials such as fiber-reinforced

Keywords： fused structures     structural fuse     fiber-reinforced polymer     concrete    

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Title Author Date Type Operation

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

Shaochun WANG, Xi JIANG, Yun BAI

Journal Article

Structural performance of a façade precast concrete sandwich panel enabled by a bar-type basalt fiber-reinforced

Journal Article

Crack detection for wading-concrete structures using water irrigation and electric heating

Journal Article

Hollow-fiber gas penetration electrodes efficiently produce renewable synthetic fuels

Journal Article

Experimental and parametrical investigation of pre-stressed ultrahigh-performance fiber-reinforced concrete

Journal Article

Structural health monitoring with fiber optic sensors

F. ANSARI

Journal Article

Monitoring corrosion of reinforcement in concrete structures via fiber Bragg grating sensors

Zhupeng ZHENG, Xiaoning SUN, Ying LEI

Journal Article

Material Mechanical Properties Necessary for the Structural Intervention of Concrete Structures

Tamon Ueda

Journal Article

Fatigue shear performance of concrete beams reinforced with hybrid (glass-fiber-reinforced polymer+ steel

Journal Article

Acoustic emissions evaluation of the dynamic splitting tensile properties of steel fiber reinforced concrete

Journal Article

Shear assessment of compression flanges of structural concrete T-beams

Bj?rn SCHüTTE,Viktor SIGRIST

Journal Article

The damage evolution behavior of polypropylene fiber reinforced concrete subjected to sulfate attack

Ninghui LIANG; Jinwang MAO; Ru YAN; Xinrong LIU; Xiaohan ZHOU

Journal Article

Behavior of steel fiber–reinforced high-strength concrete at medium strain rate

Chujie JIAO, Wei SUN, Shi HUAN, Guoping JIANG

Journal Article

Shear behavior of ultra-high-performance concrete beams prestressed with external carbon fiber-reinforced

Journal Article

Fused structures for safer and more economical constructions

Yu-Fei WU, Ying-Wu ZHOU, Biao HU, Xiaoxu HUANG, Scott SMITH

Journal Article