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Flexural and longitudinal shear performance of precast lightweight steel–ultra-high performance concrete

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 704-721 doi: 10.1007/s11709-023-0941-6

Abstract: In this study, the flexural and longitudinal shear performances of two types of precast lightweight steel–ultra-highperformance concrete (UHPC) composite beams are investigated, where a cluster UHPC slab (CUS) and aResults show that the longitudinal shear force of the CUS is greater than that of the NUS, whereas theparameters of the CUS, a parametric study is conducted to investigate their effects on the flexural and longitudinalshear performances.

Keywords： precast steel–UHPC composite beam     flexural performance     longitudinal shear performance     parametric study    

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Innovative hybrid reinforcement constituting conventional longitudinal steel and FRP stirrups for improved

Mostafa FAKHARIFAR,Ahmad DALVAND,Mohammad K. SHARBATDAR,Genda CHEN,Lesley SNEED

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 44-62 doi: 10.1007/s11709-015-0295-9

Abstract: The hybrid reinforcement consists of conventional longitudinal steel reinforcement and FRP stirrups.strength and ductility owing to the considerable confining pressure provided by the FRP stirrups to the longitudinal

Keywords： FRP     ductility     confinement     seismic     shear    

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Micromixing performance of the teethed high shear mixer under semi-batch operation

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 546-559 doi: 10.1007/s11705-021-2069-3

Abstract: Herein the structural and operating parameters of the teethed high shear mixers were adjusted to studythe micromixing performance in the semi-batch operated system, using the Villermaux/Dushman reactionthat the rising of the rotor speed and the number of rotor teeth, the decrease of the width of the shearevolution of the flow pattern and turbulent energy dissipation rate of the semi-batch operated high shearwhich can provide valuable guidance on the design and optimization of the semi-batch operated high shear

Keywords： high shear mixer     semi-batch operation     micromixing performance     Villermaux/Dushman system     segregation    

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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: However, the fatigue shear performance of such beams is unclear.Therefore, beams with hybrid longitudinal bars and hybrid stirrups were designed, and fatigue shear testsFor specimens that failed by fatigue shear, all the glass-fiber-reinforced polymer stirrups and someGlass-fiber-reinforced polymer stirrups were subjected to fatigue tension and shear, and failed owingto shear.

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

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Behavior and strength of headed stud shear connectors in ultra-high performance concrete of composite

Jianan QI, Yuqing HU, Jingquan WANG, Wenchao LI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1138-1149 doi: 10.1007/s11709-019-0542-6

Abstract: This study presents an experimental and numerical investigation on the static behavior of headed stud shearconnectors in ultra-high performance concrete (UHPC) of composite bridges., crushing or splitting was observed on the concrete slab, indicating that UHPC slab exhibited good performanceThe numerical and experimental results indicated that the shear capacity is supposed to be composed oftwo parts stud shank shear contribution and concrete wedge block shear contribution.

Keywords： ultra-high performance concrete     studs     shear strength     FE analysis     push-out test    

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Lateral shear performance of sheathed post-and-beam wooden structures with small panels

Frontiers of Structural and Civil Engineering   Pages 1117-1131 doi: 10.1007/s11709-023-0939-0

Abstract: To verify the lateral shear performance of wood frame shear walls with smaller panels, we subjected 13shear walls, measuring 0.91 m in width and 2.925 m in height, to a low-cycle cyclic loading test withThe results indicate that the hysteretic performance of the walls was mainly determined by the hystereticperformance of the sheathing-frame connection.The shear wall remained in the elastic stage when the drift was 1/250 rad and ductility coefficients

Keywords： post-and-beam wooden structures with sheathed walls     low reversed cyclic loading     bearing capacity     stiffness     numerical simulation    

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Behaviour of self-centring shear walls——A state of the art review

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 53-77 doi: 10.1007/s11709-022-0850-0

Abstract: post-tensioning (PT) in structural walls has led to the development of advanced self-centring (rocking) shearsliding, confinement, seismic performance factors, PT loss, PT force range and residual drifts of shearThe established database was then used to review shear walls’ configurations, material, and componentsThe behaviour of concrete, masonry and timber shear walls were compared and critically analysed.The general behaviour, force-displacement performance of the walls, ductility, and seismic response factors

Keywords： self-centring shear walls     rocking walls     energy dissipation     seismic performance factors     PT loss     residual    

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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 performanceThe shear span to depth ratio had a significant influence on the shear capacity, and the effective prestressingFurther, a new shear design equation was proposed to take into account the effect of the shear span todepth ratio and the steel fiber content on shear capacity.

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

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Numerical investigation and analysis of heat transfer enhancement in channel by longitudinal vortex based

TAO Wenquan, WU Junmei

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 71-78 doi: 10.1007/s11708-008-0001-x

Abstract: It is found that the inherent mechanism of the heat transfer enhancement by longitudinal vortex can beThe longitudinal vortex improves the field synergy of the large downstream region of longitudinal vortexThus, longitudinal vortex can enhance the integral heat transfer of the flow field, while transverse

Keywords： inherent mechanism     integral     surface     rectanglar     longitudinal    

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Performance evaluation of low-rise infilled reinforced concrete frames designed by considering localeffects on column shear demand

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 5,   Pages 686-703 doi: 10.1007/s11709-023-0937-2

Abstract: However, local wall-frame interactions can also lead to increased shear demand in the columns owing toThe performance of these frames was assessed using nonlinear static, and dynamic analyses.The performance of the frames and the failure modes were compared with those of frames designed withoutThe proposed method can eliminate the column shear failure from the building.

Keywords： reinforced concrete frames     infill wall     seismic design method     shear failure     wall-frame interaction    

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Load-sharing mechanism in timber-steel hybrid shear wall systems

Zheng LI,Minjuan HE,Frank LAM,Minghao LI

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 203-214 doi: 10.1007/s11709-015-0293-y

Abstract: The lateral performance of timber-steel hybrid shear wall systems with regard to the interaction betweenthe steel frame and the infill wood shear wall was investigated in this paper.A numerical model for the timber-steel hybrid shear wall system was developed and verified against testIn the hybrid shear wall system, the infill wood wall was found to resist a major part of the lateralobserved through different lateral load resisting mechanisms, which provided robustness to the hybrid shear

Keywords： timer-steel hybrid     shear wall     load sharing mechanism     seismic performance     parametric analysis    

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Analytical and numerical investigation into the longitudinal vibration of uniform nanotubes

Masoud MASOUMI,Mehdi MASOUMI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 142-149 doi: 10.1007/s11465-014-0292-z

Abstract: developed, and it is used to model the carbon nanotubes with the aim of the investigating into their longitudinal

Keywords： continuum theory     differential quadrature method     nanorod     longitudinal vibration    

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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: First, pull-out tests were conducted to evaluate the anchoring performance of the connector in concreteThereafter, direct shear tests were conducted to investigate the shear performance of the connector.After the test on the individual performance of the connector, five façade PCSP specimens with the bar-typeBFRP connector were fabricated, and the out-of-plane flexural performance was tested under a uniformlycomposite PCSP; 3) the boundary condition of the panel considerably influenced the out-of-plane flexural performance

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

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Experimental investigation and design of aluminum columns with longitudinal welds

Yun WU, Qilin ZHANG

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 366-373 doi: 10.1007/s11709-011-0101-2

Abstract: This paper presents an experimental investigation of longitudinally welded aluminum alloy I-section columns subjected to pure axial compression. The specimens were fabricated using 6061-T6 heat-treated aluminum alloy. The test program included 20 column tests which were separated into 2 test series of different types of welding sections. Each test series contained 10 columns. All the specimens were welded using the Tungsten Inert Gas welding method. The length of the specimens ranged from 442 to 2433 mm in order to obtain a column curve for each test series. The observed failure mode for the column tests includes mainly flexural buckling around the minor axis and the major axis by applying support except for one column (ZP1217-1) which buckled in the local zone and some columns which failed in the weld. The test strengths were compared with the design strengths predicted by the European Code and China Code for aluminum structures. The purpose of this paper is to present the tests results of two typically longitudinally welded I-section columns, and to check the accuracy of the design rules in the current specifications.

Keywords： aluminum alloy     longitudinal weld     heat-affected zone (HAZ)     reduced strength zone (RSZ)     buckling     column    

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Discontinuous mechanical behaviors of existing shield tunnel with stiffness reduction at longitudinal

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 37-52 doi: 10.1007/s11709-022-0920-3

Abstract: The existing shield tunnel is regarded as a Timoshenko beam with longitudinal joints.The opening and relative dislocation of the longitudinal joints can be calculated using Dirac delta functionsThe effects of the stiffness reduction at the longitudinal joints (α and β), the shearingmethod is suitable for simulating the discontinuous mechanical behaviors of existing shield tunnels with longitudinalThe bending moment and shear force are discontinuous despite slight discontinuities in the deflection

Keywords： tunnel–soil interaction     discontinuous analysis     longitudinal joints     existing shield tunnel     Timoshenko    

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Title Author Date Type Operation

Flexural and longitudinal shear performance of precast lightweight steel–ultra-high performance concrete

Journal Article

Innovative hybrid reinforcement constituting conventional longitudinal steel and FRP stirrups for improved

Mostafa FAKHARIFAR,Ahmad DALVAND,Mohammad K. SHARBATDAR,Genda CHEN,Lesley SNEED

Journal Article

Micromixing performance of the teethed high shear mixer under semi-batch operation

Journal Article

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

Journal Article

Behavior and strength of headed stud shear connectors in ultra-high performance concrete of composite

Jianan QI, Yuqing HU, Jingquan WANG, Wenchao LI

Journal Article

Lateral shear performance of sheathed post-and-beam wooden structures with small panels

Journal Article

Behaviour of self-centring shear walls——A state of the art review

Journal Article

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

Journal Article

Numerical investigation and analysis of heat transfer enhancement in channel by longitudinal vortex based

TAO Wenquan, WU Junmei

Journal Article

Performance evaluation of low-rise infilled reinforced concrete frames designed by considering localeffects on column shear demand

Journal Article

Load-sharing mechanism in timber-steel hybrid shear wall systems

Zheng LI,Minjuan HE,Frank LAM,Minghao LI

Journal Article

Analytical and numerical investigation into the longitudinal vibration of uniform nanotubes

Masoud MASOUMI,Mehdi MASOUMI

Journal Article

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

Journal Article

Experimental investigation and design of aluminum columns with longitudinal welds

Yun WU, Qilin ZHANG

Journal Article

Discontinuous mechanical behaviors of existing shield tunnel with stiffness reduction at longitudinal

Journal Article