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Study on the Mechanism and Cause Mode of the Karst Collapse——Taking Tai’an-Laiwu for Example

Gao Zongjun

Strategic Study of CAE 2008, Volume 10, Issue 4,   Pages 38-43

Abstract: The limestone buried by Quaternary System grows into karst caves, and karst collapse brings enormousThe spatio-temporal distributing characteristics of karst collapse are summed up in detail.The geological condition, artificial function and forming mechanism of karst collapse are discussed.The cause mode of the karst collapse aiming at the existing questions is discussed and the idea for karstcollapse studying in the future is given at last.

Keywords： Tai’an-Laiwu     karst collaps     spatio-temporal distributing characteristics     forming mechanism     cause mode    

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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: assess different probabilities for each scenario and carried out an analysis to ensure if progressive collapsethe first step in view, a pushdown analysis was carried out to determine the severity of progressive collapseFinally, 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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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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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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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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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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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: elements are unable to resist the supplementary loading, they continue to fail, which leads to progressive collapseIn 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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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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A Geometric Understanding of Deep Learning Article

Na Lei, Dongsheng An, Yang Guo, Kehua Su, Shixia Liu, Zhongxuan Luo, Shing-Tung Yau, Xianfeng Gu

Engineering 2020, Volume 6, Issue 3,   Pages 361-374 doi: 10.1016/j.eng.2019.09.010

Abstract: competitive—relation between the generator and the discriminator, and the fundamental reason for modecollapse.transparency, as well as the computational stability and efficiency; in particular, it eliminates the modecollapse.

Keywords： Generative     Adversarial     Deep learning     Optimal transportation     Mode collapse    

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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: the alternate load path to redistribute residual loads and preventing from the potential progressive collapsethis study a ten-storey regular structural building has been considered to investigate progressive collapseSimulation 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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Collapse fragility assessment of steel roof framings with force limiting devices under transient wind

Linjia BAI, Yunfeng ZHANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 199-209 doi: 10.1007/s11709-012-0168-4

Abstract: Collapse of roof could cause severe economic loss and poses safety risk to residents in the building.The buckling of members in a steel roof frame structure, which may lead to progressive collapse, mayThis paper presents a fragility analysis of the collapse of steel roof frame structures under combinedJoist Institute (SJI) K series joist was used to demonstrate the use of force limiting devices for collapseFor the presented fragility assessment of steel roof collapse, a Monte Carlo method combined with response

Keywords： collapse     dynamic response     fragility analysis     Monte Carlo simulation     wind load    

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The influence of slope collapse on water exchange between a pit lake and a heterogeneous aquifer

Bo Zhang, Xilai Zheng, Tianyuan Zheng, Jia Xin, Shuai Sui, Di Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1104-9

Abstract:

Slope collapse will reduce the water exchange.

Slope collapse will affect the spatial distribution

Keywords： Pit lake     Slope collapse     Groundwater–surface water interactions     Numerical simulation    

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Topology optimization and seismic collapse assessment of shape memory alloy (SMA)-braced frames: Effectiveness

Aydin HASSANZADEH; Saber MORADI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3,   Pages 281-301 doi: 10.1007/s11709-022-0807-3

Abstract: The seismic response and collapse safety of topologically optimal SMA-BFs are assessed according to theA comparative study on the optimal SMA-BFs is also presented in terms of total relative cost, collapseThe results demonstrate that Fe-based SMA-BFs exhibit higher collapse capacity and more uniform distribution

Keywords： optimization     shape memory alloy     Fe-based SMA     steel braced frames     performance-based seismic design     collapse    

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Visual chiral recognition of 1,1′-binaphthol through enantioselective collapse of gel based on an amphiphilic

Xuhong Zhang, Haimiao Li, Xin Zhang, Meng An, Weiwei Fang, Haitao Yu

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 231-237 doi: 10.1007/s11705-017-1633-3

Abstract: recognition of enantiomeric 1-(2-hydroxynaphthalen-1-yl)naphthalen-2-ol (BINOL) through selective gel collapse

Keywords： gelator     Schiff base     chiral recognition     gel formation     gel collapse    

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Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 836-849 doi: 10.1007/s11708-017-0444-z

Abstract: It describes a coupling of sliding mode direct torque control (DTC) with sliding mode flux and speedThis algorithm uses direct torque control basics and the sliding mode approach.The sliding mode controller is used to generate reference voltages in stationary frame and give themThe second aim of this paper is to design a sliding mode speed/flux observer which can improve the control

Keywords： induction motor     direct torque control (DTC)     space vector modulation (SVM)     sliding mode control (SMC)     sliding mode observer (SMO)     dS1104    

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Title Author Date Type Operation

Study on the Mechanism and Cause Mode of the Karst Collapse——Taking Tai’an-Laiwu for Example

Gao Zongjun

Journal Article

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

Gholamreza ABDOLLAHZADEH, Hadi FAGHIHMALEKI

Journal Article

Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Journal Article

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

Journal Article

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

Fuwen ZHANG, Xilin LU, Chao YIN,

Journal Article

Stress-strain relationship with soil structural parameter of collapse loess

SHAO Shengjun, YU Qinggao, LONG Jiyong

Journal Article

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

El Houcine MOURID, Said MAMOURI, Adnan IBRAHIMBEGOVIC

Journal Article

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

Jingcai ZHANG; Yong DING; Xinchun GUAN

Journal Article

A Geometric Understanding of Deep Learning

Na Lei, Dongsheng An, Yang Guo, Kehua Su, Shixia Liu, Zhongxuan Luo, Shing-Tung Yau, Xianfeng Gu

Journal Article

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

Iman TABAEYE IZADI, Abdolrasoul RANJBARAN

Journal Article

Collapse fragility assessment of steel roof framings with force limiting devices under transient wind

Linjia BAI, Yunfeng ZHANG

Journal Article

The influence of slope collapse on water exchange between a pit lake and a heterogeneous aquifer

Bo Zhang, Xilai Zheng, Tianyuan Zheng, Jia Xin, Shuai Sui, Di Zhang

Journal Article

Topology optimization and seismic collapse assessment of shape memory alloy (SMA)-braced frames: Effectiveness

Aydin HASSANZADEH; Saber MORADI

Journal Article

Visual chiral recognition of 1,1′-binaphthol through enantioselective collapse of gel based on an amphiphilic

Xuhong Zhang, Haimiao Li, Xin Zhang, Meng An, Weiwei Fang, Haitao Yu

Journal Article

Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode

Abdelkarim AMMAR,Amor BOUREK,Abdelhamid BENAKCHA

Journal Article