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Investigation on a mitigation scheme to resist the progressive collapse of reinforced concrete buildings

Iman TABAEYE IZADI, Abdolrasoul RANJBARAN

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 421-430 doi: 10.1007/s11709-012-0181-7

Abstract: to provide the alternate load path to redistribute residual loads and preventing from the potential progressivecollapse of RC buildings.In this study a ten-storey regular structural building has been considered to investigate progressivecollapse potential.Simulation results show that progressive collapse of building that resulted from potential failure of

Keywords： prevent progressive collapse     alternate load path     reinforced concrete buildings     nonlinear dynamic     retrofitting    

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Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 718-728 doi: 10.1007/s11709-022-0815-3

Abstract: However, horizontal stiffness is essential to progressive collapse resistance of structures.This paper presents a simplified model to assess the progressive collapse response of beam-pier substructureProgressive collapse resistance by flexural action of the beam and additional resistance owing to theThe results show that progressive collapse resistance provided by horizontal restraining can be reducedThe equivalent radius of the FPB shows limited effect on the progressive collapse response of FPB isolated

Keywords： friction pendulum bearing     progressive collapse     horizontal stiffness     compressive arching action     catenary    

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Proposal of a probabilistic assessment of structural collapse concomitantly subject to earthquake and

Gholamreza ABDOLLAHZADEH, Hadi FAGHIHMALEKI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 425-437 doi: 10.1007/s11709-017-0427-5

Abstract: tried to assess different probabilities for each scenario and carried out an analysis to ensure if progressivecollapse had set in or not.destructions of the first step in view, a pushdown analysis was carried out to determine the severity of progressivecollapse and assess building robustness.Finally, the annual probability of structural collapse under simultaneous earthquake and blast loads

Keywords： gas blast     pushdown analysis     progressive collapse     annual probability of structural collapse     3D model of    

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A preliminary analysis and discussion of the condominium building collapse in surfside, Florida, US,

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1097-1110 doi: 10.1007/s11709-021-0766-0

Abstract: a 40-year-old reinforced concrete flat plate structure building in Miami suffered a sudden partial collapseThe collapse process was simulated and visualized using a physics engine.The simulated collapse procedure and debris distribution are compared with the actual collapse scenes

Keywords： progressive collapse     flat plate     simulation     punching    

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Seismic progressive-failure analysis of tall steel structures under beam-removal scenarios

Behrouz BEHNAM, Fahimeh SHOJAEI, Hamid Reza RONAGH

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 904-917 doi: 10.1007/s11709-019-0525-7

Abstract: Investigating progressive collapse of tall structures under beam removal scenarios after earthquake isThis imposes considerable loads to the structure leading to a progressive collapse in all the scenarios

Keywords： progressive collapse     tall steel moment-resisting frames     non-linear dynamic analysis     beam-removal scenario    

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Progressive collapse of 2D reinforced concrete structures under sudden column removal

El Houcine MOURID, Said MAMOURI, Adnan IBRAHIMBEGOVIC

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1387-1402 doi: 10.1007/s11709-020-0645-0

Abstract: these elements are unable to resist the supplementary loading, they continue to fail, which leads to progressivecollapse of building.In this paper, an efficient strategy to model and simulate the progressive collapse of multi-story reinforcedMoreover, this contribution pertains to a very thorough investigation of progressive collapse of theThe proposed methodology is applied to a six-story frame, and many different progressive collapse scenarios

Keywords： failure mechanism     MBS dynamic analysis     gravity loads     structure-ground contact     structure-structure contact     energy conserving/decaying scheme    

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Deep reinforcement learning-based critical element identification and demolition planning of frame structures

Shaojun ZHU; Makoto OHSAKI; Kazuki HAYASHI; Shaohan ZONG; Xiaonong GUO

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1397-1414 doi: 10.1007/s11709-022-0860-y

Abstract: Innovative quantitative indices considering the severity of the ultimate collapse scenario are proposedbe directly used as the quantitative index for the decision-making for determining the most expected collapse

Keywords： progressive collapse     alternate load path     demolition planning     reinforcement learning     graph embedding    

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Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 151-160 doi: 10.1007/s11709-008-0020-z

Abstract: Through the tri-axial shearing tests of unsaturated intact loess and based on the concept of comprehensive soil structural potential, this paper reveals the changing laws of soil structural property under the tri-axial stress conditions and establishes a mathematical expression equation of structural parameters, whereby reflecting the effects of unsaturated loess water content, stress and strain states, which is introduced into the shearing stress and shearing strain relation to obtain the structural stress-strain relation. The tests reveal that the loess dilatancy is of shearing contraction and shearing expansion, whereby indicating that there is a good linear relation between the stress ratio and shearing expansion strain ratio. The larger consolidation confining pressure is, the larger the stress of shearing contraction and expansion critical point is; and the larger water content is, the smaller the strain ratio of shearing contraction and expansion critical point is. Finally, the constitutive model is established to reflect the variation in loess structure, stress-strain softening and hardening, and shearing contraction and shearing expansion features. Through the comparative analysis, the stress-strain curves described by the constitutive relationship are found to be in good conformity with test results, whereby testing the rationality of the model in this paper.

Keywords： hardening     shearing expansion     unsaturated     structural property     mathematical expression    

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Multiple effects of grape seed polyphenolics to prevent metabolic diseases

Torey ARVIK, Hyunsook KIM, James SEIBER, Wallace YOKOYAMA

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3,   Pages 351-361 doi: 10.15302/J-FASE-2018235

Abstract: Animal models of obesity consistently show that grape seed procyanidins prevent increases in body and

Keywords： grape seed     obesity     procyanidins     high fat     microbiota     animal models    

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Exome sequencing greatly expedites the progressive research of Mendelian diseases

Xuejun Zhang

Frontiers of Medicine 2014, Volume 8, Issue 1,   Pages 42-57 doi: 10.1007/s11684-014-0303-9

Abstract:

The advent of whole-exome sequencing (WES) has facilitated the discovery of rare structure and functional genetic variants. Combining exome sequencing with linkage studies is one of the most efficient strategies in searching disease genes for Mendelian diseases. WES has achieved great success in the past three years for Mendelian disease genetics and has identified over 150 new Mendelian disease genes. We illustrate the workflow of exome capture and sequencing to highlight the advantages of WES. We also indicate the progress and limitations of WES that can potentially result in failure to identify disease-causing mutations in part of patients. With an affordable cost, WES is expected to become the most commonly used tool for Mendelian disease gene identification. The variants detected cumulatively from previous WES studies will be widely used in future clinical services.

Keywords： genetics     whole-exome sequencing     Mendelian disease     disease gene    

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Strategies on designing multifunctional surfaces to prevent biofilm formation? ?

Yang Lu,Zhanguo Yue,Wei Wang,Zhiqiang Cao

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 324-335 doi: 10.1007/s11705-015-1529-z

Abstract: Bacteria adhesion and biofilm formation have raised severe problems on public health, food industry and many other areas. A variety of reagents and surface coatings have been developed to kill bacteria and/or limit their interaction with surfaces. It has also attracted many efforts to integrate different bactericidal elements together and maximize antibacterial efficiency. Herein, we review mechanisms for both passive and active approaches to resist and kill bacteria respectively, and discuss integrated strategies based on these two approaches. We also offer perspective on future research direction.

Keywords： antimicrobial     surface     multifunctional    

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Numerical simulation and analysis for collapse responses of RC frame structures under earthquake

Fuwen ZHANG, Xilin LU, Chao YIN,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 364-369 doi: 10.1007/s11709-009-0061-y

Abstract: In this paper, a discrete element model for collapse simulation of RC frame structure is constructedcomputer program is developed to simulate the whole process of RC frame structures from initial state to collapseThen, the program is employed to study the collapse mechanism of a real building in Wenchuan earthquake-hitthat the simulation program developed based on the new model can realistically simulate the seismic collapse

Keywords： discrete element method     failure criteria     contact-impact     simulation program    

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Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope

Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 208-224 doi: 10.1007/s11709-011-0111-0

Abstract: The test results show that the collapse of slope is the combination of tension failure at the top andthe compression-shearing failure at the bottom of the slope, and its failure process presents progressive

Keywords： progressive failure     weak-broken rock     slope     model test     bolt    

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Life cycle and performance based seismic design of major bridges in China

FAN Lichu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 261-266 doi: 10.1007/s11709-007-0033-z

Abstract: The vulnerability analysis and progressive collapse analysis, as well as risk assessment, are also proposed

Keywords： controllability     progressive     reparability     different     important    

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Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 293-293 doi: 10.1007/s11709-008-0100-0

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Title Author Date Type Operation

Investigation on a mitigation scheme to resist the progressive collapse of reinforced concrete buildings

Iman TABAEYE IZADI, Abdolrasoul RANJBARAN

Journal Article

Study of the mechanics of progressive collapse of FPB isolated beam-pier substructures

Jingcai ZHANG; Yong DING; Xinchun GUAN

Journal Article

Proposal of a probabilistic assessment of structural collapse concomitantly subject to earthquake and

Gholamreza ABDOLLAHZADEH, Hadi FAGHIHMALEKI

Journal Article

A preliminary analysis and discussion of the condominium building collapse in surfside, Florida, US,

Journal Article

Seismic progressive-failure analysis of tall steel structures under beam-removal scenarios

Behrouz BEHNAM, Fahimeh SHOJAEI, Hamid Reza RONAGH

Journal Article

Progressive collapse of 2D reinforced concrete structures under sudden column removal

El Houcine MOURID, Said MAMOURI, Adnan IBRAHIMBEGOVIC

Journal Article

Deep reinforcement learning-based critical element identification and demolition planning of frame structures

Shaojun ZHU; Makoto OHSAKI; Kazuki HAYASHI; Shaohan ZONG; Xiaonong GUO

Journal Article

Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Journal Article

Multiple effects of grape seed polyphenolics to prevent metabolic diseases

Torey ARVIK, Hyunsook KIM, James SEIBER, Wallace YOKOYAMA

Journal Article

Exome sequencing greatly expedites the progressive research of Mendelian diseases

Xuejun Zhang

Journal Article

Strategies on designing multifunctional surfaces to prevent biofilm formation? ?

Yang Lu,Zhanguo Yue,Wei Wang,Zhiqiang Cao

Journal Article

Numerical simulation and analysis for collapse responses of RC frame structures under earthquake

Fuwen ZHANG, Xilin LU, Chao YIN,

Journal Article

Experimental study on the progressive failure and its anchoring effect of weak-broken rock vertical slope

Hehua ZHU, Qianwei XU, Wenqi DING, Feng HUANG

Journal Article

Life cycle and performance based seismic design of major bridges in China

FAN Lichu

Journal Article

Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Journal Article