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Research on the influence of contact surface constraint on mechanical properties of rock-concrete composite

Baoyun ZHAO, Yang LIU, Dongyan LIU, Wei HUANG, Xiaoping WANG, Guibao YU, Shu LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 322-330 doi: 10.1007/s11709-019-0594-7

Abstract: To study the influence of contact surface on the mechanical properties of rock-concrete composite specimensunder compressive loads, the two different contact forms of rock-concrete composite specimens are designedResults show that the stress and strain of rock-concrete composite specimens with contact surface constraintAveragely, compared with composite specimens without the contact surface, the existence of contact surfaceconstraint can increase the axial peak stress of composite specimens by 24% and the axial peak strain

Keywords： rock-concrete     composite specimen     contact surface     mechanical properties     failure mechanism    

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Effects of delamination in drilling glass/polyester composite

Mehdi GANJIANI, Majid SAFARABADI, Nabi MEHRI-KHANSARI, Hossein ORUJI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 552-567 doi: 10.1007/s11709-021-0699-7

Abstract: analysis involving delamination and the corresponding dissipated energy is required, especially for composite

Keywords： delamination     VCCT     ARCAN specimen     drilling     mode II    

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Technological development and engineering applications of novel steel-concrete composite structures

Jianguo NIE, Jiaji WANG, Shuangke GOU, Yaoyu ZHU, Jiansheng FAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 1-14 doi: 10.1007/s11709-019-0514-x

Abstract: community, the development and proposition of novel resource-saving high-performance steel-concrete compositeThis paper summarizes the technical principles and applications of the long-span bi-directional compositeon uplift-restricted and slip-permitted (URSP) connectors, the steel plate concrete composite (SPCC)strengthen technique, and the innovative composite joints.The research results also indicate that the high-performance steel-concrete composite structures have

Keywords： high-performance composite structure     bi-directional composite     composite transfer     uplift-restricted andslip-permitted connectors     steel plate concrete composite strengthen    

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Three-Dimensional Mesoscopic Investigation on the Impact of Specimen Geometry and Bearing Strip Size Article

Zhangyu Wu, Jinhua Zhang, Hongfa Yu, Qin Fang, Haiyan Ma, Li Chen

Engineering 2022, Volume 17, Issue 10,   Pages 110-122 doi: 10.1016/j.eng.2021.02.024

Abstract: investigate the static splitting-tensile behaviors of CAC under the influence of two factors, namely specimenWe established 12 different specimen models with two specimen shapes (i.e., a cube with an edge lengthThe effects of specimen geometry and strip width on the splitting-tensile properties of CAC, such asThe fst values of CAC are associated with both the specimen geometry and width of the bearing strip.

Keywords： Coral aggregate concrete     3D mesoscopic modelling     Split-tension test     Tensile strength     Specimen geometry    

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Effect of strata restraint on seismic performance of prefabricated sidewall joints in fabricated subway stations

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 763-779 doi: 10.1007/s11709-023-0917-6

Abstract: A disadvantage of the conventional quasi-static test method is that it does not consider the soil restraint effect. A new method to test the seismic performance of prefabricated specimens for underground assembled structures is proposed, which can realistically reflect the strata restraint effect on the underground structure. Laboratory work combined with finite element (FE) analysis is performed in this study. Three full-scale sidewall specimens with different joint forms are designed and fabricated. Indices related to the seismic performance and damage modes are analyzed comprehensively to reveal the mechanism of the strata restraint effect on the prefabricated sidewall components. Test results show that the strata restraint effect effectively improves the energy dissipation capacity, load-bearing capacity, and the recoverability of the internal deformation of the precast sidewall components. However, the strata restraint effect reduces the ductility of the precast sidewall components and aggravates the shear and bending deformations in the core region of the connection joints. Additionally, the strata restraint effect significantly affects the seismic performance and damage mode of the prefabricated sidewall components. An FE model that can be used to conduct a seismic performance study of prefabricated specimens for underground assembled structures is proposed, and its feasibility is verified via comparison with test data.

Keywords： underground structures     precast sidewall specimen     seismic test method     bearing capacity     energy dissipation    

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Experimental study on compaction-induced anisotropic mechanical property of rockfill material

Xiangtao ZHANG, Yizhao GAO, Yuan WANG, Yu-zhen YU, Xun SUN

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 109-123 doi: 10.1007/s11709-021-0693-0

Abstract: For high-density rockfill materials, a set of specimen preparation devices for inclined compaction planesprincipal stress direction angles can change the extent of the particle interlocking effect, causing the specimen

Keywords： rockfill     inclination of specimen preparation     anisotropy     mechanical property     mechanism    

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Deep eutectic solvent inclusions for high- composite dielectric elastomers

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 996-1002 doi: 10.1007/s11705-022-2138-2

Abstract: The as-prepared composite elastomers showed good stretchability and a greatly enhanced dielectric constantbelieved that low-cost, easy-synthesis and environmentally friendly deep eutectic solvents including composite

Keywords： composite materials     deep eutectic solvent     dielectric elastomer     high dielectric constant    

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An antibiotic composite electrode for improving the sensitivity of electrochemically active biofilm biosensor

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1518-7

Abstract:

• Antibiotic azithromycin employed in graphite electrode for EAB biosensor.

Keywords： AZM@GP composite electrode     EAB-biosensor     Water quality early-warning    

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Structural optimization of filament wound composite pipes

Roham RAFIEE; Reza SHAHZADI; Hossein SPERESP

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 1056-1069 doi: 10.1007/s11709-022-0868-3

Abstract: An optimization procedure is developed for obtaining optimal structural design of filament wound compositeThen, proper computational tools are developed for predicting the structural properties of the composite

Keywords： composite pipes     optimization     experimental validation     computational modeling     filament winding    

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Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 623-642 doi: 10.1007/s11709-021-0726-8

Abstract: study, gradual and sudden reduction methods were combined to simulate a progressive failure in notched compositecomputational cost and is also capable of simultaneously predicting the first and last ply failures (LPFs) in compositethe first ply failure (FPF), LPF, and dominant failure modes of carbon/epoxy and glass/epoxy notched compositeeffects of mechanical properties and different stacking sequences on the propagation of damage in notched compositeit is revealed that the proposed method can accurately simulate the failure propagation in notched composite

Keywords： progressive failure     notched composite plate     Hashin failure criterion     macro mechanics approach     finite    

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Bending and rotational behaviour of semi-continuous composite beams

WANG Jingfeng, LI Guoqiang

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 116-122 doi: 10.1007/s11709-008-0015-9

Abstract: Stresses and deflections were measured in various semi-continuous composite beams.The bending and rotational capacities of the composite connections were measured in terms of beam curvaturesand deflections by using two full-scale semi-rigid composite frames with monotonic loadings.The effect of semi-rigid connections on the performance of composite beams with various loadings wasor continuous composite beams.

Keywords： rotational     effective     deflection calculation     semi-continuous composite     full-scale semi-rigid    

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Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork

Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1271-1287 doi: 10.1007/s11709-019-0556-0

Abstract: To enhance the durability of a reinforced concrete structure, engineered cementitious composite (ECC)This paper presents a new means to address this issue by introducing a composite beam with a U-shapedThe flexural performance of the ECC/RC composite beam has been investigated experimentally with eightAccording to the test results, the failure of a composite beam with a U-shaped ECC formwork is initiatedUnder the same reinforcement configurations, ECC/RC composite beams exhibit increases in flexural performance

Keywords： engineered cementitious composite (ECC)     durability     ECC/RC composite beam     permanent formwork     flexural    

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Bending performance of composite bridge deck with T-shaped ribs

Qingtian SU, Changyuan DAI, Xu JIANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 990-997 doi: 10.1007/s11709-019-0532-8

Abstract: This paper proposes a new type of steel-concrete composite deck, which is composed of orthotropic steelCompared with conventional OSD system, this new type of composite bridge deck can also improve fatigueConsidering that this type of composite deck is not yet applied in practical engineering and its mechanicalThe test results showed that the plastic performance of this kind of composite bridge deck was satisfying

Keywords： bending performance     composite bridge deck     T-shaped steel ribs    

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Surface-tailoring chlorine resistant materials and strategies for polyamide thin film composite reverse

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 564-591 doi: 10.1007/s11705-021-2109-z

Abstract: Polyamide thin film composite membranes have dominated current reverse osmosis market on account of theirof polyamide toward chlorine attack has been regarded as the Achilles’s heel of polyamide thin film compositeThe advancement in the development of chlorine resistant polyamide thin film composite membranes is reviewed

Keywords： reverse osmosis     polyamide     thin film composite membranes     chlorine resistance     surface modification    

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Creep-fatigue crack growth behavior in GH4169 superalloy

Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 369-376 doi: 10.1007/s11465-018-0489-7

Abstract: This study aims to examine the crack growth behavior of turbine disc GH4169 superalloy under creep-fatigue loading. Crack growth experiments were performed on compact tension specimens using trapezoidal waveform with dwell time at the maximum load at 650 °C. The crack growth rate of GH4169 superalloy significantly increased with dwell time. The grain boundaries oxidize during the dwell process, thereby inducing an intergranular creep-fatigue fracture mode. In addition, testing data under the same dwell time showed scattering at the crack growth rate. Consequently, a modified model based on the Saxena equation was proposed by introducing a distribution factor for the crack growth rate. Microstructural observation confirmed that the small grain size and high volume fraction of the d phase led to a fast creep-fatigue crack growth rate at 650 °C, thus indicating that two factors, namely, fine grain and presence of the d phase at the grain boundary, increased the amount of weakened interface at high temperature, in which intergranular cracks may form and propagate.

Keywords： crack growth rate     creep-fatigue     GH4169 superalloy     CT specimen     dwell time    

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Title Author Date Type Operation

Research on the influence of contact surface constraint on mechanical properties of rock-concrete composite

Baoyun ZHAO, Yang LIU, Dongyan LIU, Wei HUANG, Xiaoping WANG, Guibao YU, Shu LIU

Journal Article

Effects of delamination in drilling glass/polyester composite

Mehdi GANJIANI, Majid SAFARABADI, Nabi MEHRI-KHANSARI, Hossein ORUJI

Journal Article

Technological development and engineering applications of novel steel-concrete composite structures

Jianguo NIE, Jiaji WANG, Shuangke GOU, Yaoyu ZHU, Jiansheng FAN

Journal Article

Three-Dimensional Mesoscopic Investigation on the Impact of Specimen Geometry and Bearing Strip Size

Zhangyu Wu, Jinhua Zhang, Hongfa Yu, Qin Fang, Haiyan Ma, Li Chen

Journal Article

Effect of strata restraint on seismic performance of prefabricated sidewall joints in fabricated subway stations

Journal Article

Experimental study on compaction-induced anisotropic mechanical property of rockfill material

Xiangtao ZHANG, Yizhao GAO, Yuan WANG, Yu-zhen YU, Xun SUN

Journal Article

Deep eutectic solvent inclusions for high- composite dielectric elastomers

Journal Article

An antibiotic composite electrode for improving the sensitivity of electrochemically active biofilm biosensor

Journal Article

Structural optimization of filament wound composite pipes

Roham RAFIEE; Reza SHAHZADI; Hossein SPERESP

Journal Article

Progressive failure analysis of notched composite plate by utilizing macro mechanics approach

Journal Article

Bending and rotational behaviour of semi-continuous composite beams

WANG Jingfeng, LI Guoqiang

Journal Article

Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork

Zhi QIAO, Zuanfeng PAN, Weichen XUE, Shaoping MENG

Journal Article

Bending performance of composite bridge deck with T-shaped ribs

Qingtian SU, Changyuan DAI, Xu JIANG

Journal Article

Surface-tailoring chlorine resistant materials and strategies for polyamide thin film composite reverse

Journal Article

Creep-fatigue crack growth behavior in GH4169 superalloy

Dianyin HU, Xiyuan WANG, Jianxing MAO, Rongqiao WANG

Journal Article