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Seismic fragility assessment of revised MRT buildings considering typical construction changes

Rakesh DUMARU, Hugo RODRIGUES, Humberto VARUM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 241-266 doi: 10.1007/s11709-019-0560-4

Abstract: later modified through variable number of storeys (three, four, and five) and different arrangement of infillwalls (bare frame, soft-storey, irregular infilled, and fully infilled).The application of infill walls increases the fundamental frequencies, stiffness, and maximum strengthThe vulnerability was also reduced through infill walls, where the probability of exceeding partial-collapseAnd increase in number of storeys causes building highly vulnerable although the infill walls were considered

Keywords： mid-rise buildings     revised NBC 205: 2012     masonry infill walls     configurations of infill walls     vulnerability    

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Mechanical properties characterization of different types of masonry infill walls

André FURTADO, Hugo RODRIGUES, António ARÊDE, Humberto VARUM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 411-434 doi: 10.1007/s11709-019-0602-y

Abstract: remarkable, the recent advances concerning the development of numerical modeling frameworks to simulate the infillthis paper is to present an extensive experimental campaign of mechanical characterization tests of infillmasonry walls made with three different types of masonry units: lightweight vertical hollow concreteThe second objective of this study was to compare the mechanical properties of as-built and existing infillwalls.

Keywords： masonry infill walls     experimental characterization     compression strength     shear diagonal strength     flexural    

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Robust design of configurations and parameters of adaptable products

Jian ZHANG,Yongliang CHEN,Deyi XUE,Peihua GU

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 1-14 doi: 10.1007/s11465-014-0296-8

Abstract: Due to the complex architecture, multiple functional requirements, and changes of product configurationsAn adaptable product in this paper is modeled by both configurations and parameters.

Keywords： adaptable product     robust design     optimization     uncertainties    

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Concurrent optimization of structural topology and infill properties with a CBF-based level set method

Long JIANG, Yang GUO, Shikui CHEN, Peng WEI, Na LEI, Xianfeng David GU

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 2,   Pages 171-189 doi: 10.1007/s11465-019-0530-5

Abstract: framework is proposed to concurrently optimize the structural topology at the macroscale and the effective infillWithin the proposed framework, both the structural boundary evolution and the effective infill propertydistance information embedded in the level set model, the wrapping boundary layer and the interior infillThe isotropic infill achieved via the mesoscale topology optimization is conformally fit into the wrappingmethod, which leads to a hierarchical physical structure with optimized overall topology and effective infill

Keywords： concurrent topology optimization     parametric level set method     cardinal basis function     shell-infill structure    

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Slender reinforced concrete shear walls with high-strength concrete boundary elements

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 138-151 doi: 10.1007/s11709-022-0897-y

Abstract: Reinforced concrete structural walls are commonly used for resisting lateral forces in buildings.In this study, the effects of strategic placement of HSC on the performance of slender walls were examined

Keywords： slender walls     high-strength concrete     rectangular and barbell-shaped walls     cold joints    

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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: The application of unbonded post-tensioning (PT) in structural walls has led to the development of advancedThe 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.for different self-centring wall systems to understand the effect of different parameters including configurationsof the walls, material used for construction of the wall (concrete, masonry, timber) and axial stress

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

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Self-centring segmental retaining walls—A new construction system for retaining walls

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 980-1000 doi: 10.1007/s11709-021-0737-5

Abstract: Four post-tensioned segmental retaining walls (PSRWs) were experimentally tested.Each of the walls was constructed using seven T-shaped concrete segments with a dry stack.The walls were tested under incrementally increasing cyclic lateral load.

Keywords： retaining wall     segmental     precast concrete     unbonded post-tensioning     water retaining wall     seawall    

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Performance evaluation of waste electrical and electronic equipment disassembly layout configurations

Ozan Capraz, Olcay Polat, Askiner Gungor

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 5, doi: 10.1007/s11783-017-0992-9

Abstract: This study aims to evaluate alternative layout configurations for WEEE disassembly systems (WDS).In this context, various configurations were compared in terms of pre-defined performance criteria, such

Keywords： WEEE     Recovery     Disassembly     Layout planning     Simulation    

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Experiment and calculation on seismic behavior of RC composite core walls with concealed steel truss

Wanlin CAO , Weihua CHANG , Changjun ZHAO , Jianwei ZHANG ,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 3,   Pages 255-261 doi: 10.1007/s11709-009-0043-0

Abstract: To improve the seismic performance of reinforced concrete core walls, reinforced concrete composite corewalls with concealed steel truss were proposed and systemically investigated.load-carrying capacity, stiffness, ductility, hysteretic behavior and energy dissipation of the core wallsThe test results showed that the seismic performance of core walls is improved greatly by the concealed

Keywords： reinforced concrete     steel truss     core walls     seismic performance    

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Choosing configurations of transmission line tower grounding by back flashover probability value

Dmitry KUKLIN

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 213-226 doi: 10.1007/s11708-016-0398-6

Abstract: There is a considerable number of works devoted to electrical characteristics of grounding. These characteristics are important in general. However, in application to grounding of transmission line towers they are not enough to determine what grounding construction is preferable in some particular case, because these characteristics are calculated or measured apart from the grounded object, and only limited number of current (or voltage) source waveforms is used. This paper indicates reasons in favor of the fact that to choose the optimum design of grounding, the calculation model should include the tower as it is. The probability of back flashover, which provides both qualitative and quantitative estimate of the grounding structure efficiency, can be taken as the criterion for the grounding design. The insulation flashover probability is calculated on the basis of engineering method, which evaluates breakdown strength of insulation for nonstandard waveshapes, and probability data on lightning currents. Different approaches are examined for identifying the back flashover probability, as not only amplitudes but also other parameters can be taken into account. Finite-difference time-domain method is used for calculations of transients. It is found that lightning current waveform can greatly influence calculated back flashover probability value.

Keywords： grounding     transmission line tower     back flashover probability     FDTD method    

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Seismic effects on reinforcement load and lateral deformation of geosynthetic-reinforced soil walls

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1001-1015 doi: 10.1007/s11709-021-0734-8

Abstract: Current design methods for the internal stability of geosynthetic-reinforced soil (GRS) walls postulateresistances in the mid and lower layers as evinced by compound failure frequently occurring in GRS wallsreinforcement are conducted to investigate seismic impacts on the stability and lateral deformation of GRS walls

Keywords： geosynthetics     reinforced soil     retaining walls     seismic performance    

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Cyclic behavior of prefabricated reinforced concrete frame with infill slit shear walls

Kui XIAO,Qilin ZHANG,Bin JIA

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 63-71 doi: 10.1007/s11709-015-0294-x

Abstract: A composite structural system consisting of prefabricated reinforced concrete frame with infill slitshear walls (PRCFW), with good ductility, is a new type of earthquake resistant structure.

Keywords： slit shear wall     constitutive model     cyclic     seismic     damage    

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Modeling of shear walls using finite shear connector elements based on continuum plasticity

Ulf Arne GIRHAMMAR, Per Johan GUSTAFSSON, Bo KÄLLSNER

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 143-157 doi: 10.1007/s11709-016-0377-3

Abstract: buildings are often stabilized against lateral loads by using diaphragm action of roofs, floors and wallsof the sheathing-to-framing joints has a significant impact on the structural performance of shear wallsThis paper is focused on the finite element modeling of shear walls.Load-displacement curves for shear walls are calculated using the shear connector model and they are

Keywords： shear walls     wall diaphragms     finite element modelling     plastic shear connector     analytical modelling     experimental    

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Effect of earth reinforcement, soil properties and wall properties on bridge MSE walls

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1209-1221 doi: 10.1007/s11709-021-0764-2

Abstract: Mechanically stabilized earth (MSE) retaining walls are popular for highway bridge structures.cohesion has a minor effect, while the movement increased by 13–20 mm for flexible geogrid reinforced wallscompared with the steel grid walls.

Keywords： mechanically stabilized earth walls     precast concrete panels     backfill soil     finite element modeling    

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Self-centering steel plate shear walls for improving seismic resilience

Patricia M. CLAYTON,Daniel M. DOWDEN,Chao-Hsien LI,Jeffrey W. BERMAN,Michel BRUNEAU,Laura N. LOWES,Keh-Chuan TSAI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3,   Pages 283-290 doi: 10.1007/s11709-016-0344-z

Abstract: The SC-SPSW consists of thin steel infill panels, referred to as web plates that serve as the primary

Keywords： self-centering     steel plate shear walls     large-scale experiment     post-tensioned connections     performance-based    

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Title Author Date Type Operation

Seismic fragility assessment of revised MRT buildings considering typical construction changes

Rakesh DUMARU, Hugo RODRIGUES, Humberto VARUM

Journal Article

Mechanical properties characterization of different types of masonry infill walls

André FURTADO, Hugo RODRIGUES, António ARÊDE, Humberto VARUM

Journal Article

Robust design of configurations and parameters of adaptable products

Jian ZHANG,Yongliang CHEN,Deyi XUE,Peihua GU

Journal Article

Concurrent optimization of structural topology and infill properties with a CBF-based level set method

Long JIANG, Yang GUO, Shikui CHEN, Peng WEI, Na LEI, Xianfeng David GU

Journal Article

Slender reinforced concrete shear walls with high-strength concrete boundary elements

Journal Article

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

Journal Article

Self-centring segmental retaining walls—A new construction system for retaining walls

Journal Article

Performance evaluation of waste electrical and electronic equipment disassembly layout configurations

Ozan Capraz, Olcay Polat, Askiner Gungor

Journal Article

Experiment and calculation on seismic behavior of RC composite core walls with concealed steel truss

Wanlin CAO , Weihua CHANG , Changjun ZHAO , Jianwei ZHANG ,

Journal Article

Choosing configurations of transmission line tower grounding by back flashover probability value

Dmitry KUKLIN

Journal Article

Seismic effects on reinforcement load and lateral deformation of geosynthetic-reinforced soil walls

Journal Article

Cyclic behavior of prefabricated reinforced concrete frame with infill slit shear walls

Kui XIAO,Qilin ZHANG,Bin JIA

Journal Article

Modeling of shear walls using finite shear connector elements based on continuum plasticity

Ulf Arne GIRHAMMAR, Per Johan GUSTAFSSON, Bo KÄLLSNER

Journal Article

Effect of earth reinforcement, soil properties and wall properties on bridge MSE walls

Journal Article

Self-centering steel plate shear walls for improving seismic resilience

Patricia M. CLAYTON,Daniel M. DOWDEN,Chao-Hsien LI,Jeffrey W. BERMAN,Michel BRUNEAU,Laura N. LOWES,Keh-Chuan TSAI

Journal Article