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Truss-arch model for shear strength of seismic-damaged SRC frame columns strengthened with CFRP sheets

Sheng PENG, Chengxiang XU, Xiaoqiang LIU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1324-1337 doi: 10.1007/s11709-019-0557-z

Abstract: materials are important reinforcing substances which are widely used in the shear strengthening of seismic-damageshear strength of SRC frame columns strengthened with CFRP sheets, experimental observations on eight seismic-damagedthat the proposed whole analysis model can improve the accuracy of shear strength predictions of shear seismic-damaged

Keywords： carbon fiber reinforced polymer material     steel reinforced concrete frame column     seismic-damaged     trussed-arch    

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Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets

Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 554-568 doi: 10.1007/s11709-020-0613-8

Abstract: An experimental and numerical program is carried out in this research to investigate the influence of CFRP sheets on the cyclic behavior of unconfined connections made with recycled concrete. Cement is partially replaced by silica fume, iron filling and pulverised fuel ash using two different percentages: 15% and 20%. Each specimen is partially loaded at the first stage and then specimens are repaired using CFRP sheets. The repaired specimens are then laterally loaded until failure. In addition, a finite element model is built in ABAQUS and verified using the experimental results. The experimental results have shown that the repaired specimens have regained almost double the capacity of the un-repaired specimens and hence the adopted repair configuration is recommended for retrofitting seismically vulnerable RC connections. Increasing cement replacement percentage by silica fume, fuel ash or iron filling from 15% to 20% has reduced joint carrying capacity and weakened the joint. It is recommended using 15% pulverised fuel ash or silica fume as cement partial replacement to enhance the strength and ultimate drift of beam-column joints under cyclic loading. Iron filling concrete is also recommended but the enhancement is relatively less than that found with pulverised fuel ash concrete and silica fume concrete.

Keywords： retrofitting     CFRP sheets     recycled concrete     pulverised fuel ash     silica fume     cyclic     beam-column connections    

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

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

Abstract: A new method to test the seismic performance of prefabricated specimens for underground assembled structuresIndices related to the seismic performance and damage modes are analyzed comprehensively to reveal theAdditionally, the strata restraint effect significantly affects the seismic performance and damage modeAn FE model that can be used to conduct a seismic performance study of prefabricated specimens for underground

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

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Effects of green roof damping and configuration on structural seismic response

Frontiers of Structural and Civil Engineering   Pages 1133-1144 doi: 10.1007/s11709-023-0959-9

Abstract: To expand their usage, their inherent damping and layout sensitivity to seismic performance are investigated

Keywords： green infrastructure     green roof     structural resilience     seismic design    

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Performance-based seismic assessment of a historical masonry arch bridge: Effect of pulse-like excitations

Frontiers of Structural and Civil Engineering   Pages 855-869 doi: 10.1007/s11709-023-0972-z

Abstract: Seismic analysis of historical masonry bridges is important for authorities in all countries hostingFifteen seismic records were considered and categorized as far-field, pulse-like near-field, and non-pulse-like

Keywords： masonry arch bridges     seismic behavior     modal properties     pulse-like records     nonlinear time history    

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Variability of waste copper slag concrete and its effect on the seismic safety of reinforced concrete

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 1,   Pages 117-130 doi: 10.1007/s11709-021-0788-7

Abstract: In addition, the paper presents a reliability-based seismic risk assessment of a typical waste copperThe results show that waste copper slag can be safely used for seismic resistant structures as it results

Keywords： waste copper slag     quantification of variability     goodness-of-fit test     seismic risk assessment     PSDM    

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Efficiency of scalar and vector intensity measures for seismic slope displacements

Gang WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 1,   Pages 44-52 doi: 10.1007/s11709-012-0138-x

Abstract: empirical prediction models as well as the ground motion selection criteria for time domain analysis of seismic

Keywords： seismic slope displacements     intensity measures     empirical prediction    

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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 coreThe experimental study on seismic performance under cyclic loading was carried out.The 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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Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1095-1104 doi: 10.1007/s11709-019-0538-2

Abstract: Side joint is the weak region of PCS concrete frame and has great influence on seismic behavior of theThus systematically study on the seismic behavior of PCS concrete side joint is necessary.This paper presents a finite element study on behavior of the side joint under seismic loading.In addition, the overall seismic behavior of the side joints in PCS concrete is better than that of the

Keywords： PCS concrete side joint     numerical simulation     fiber-beam element joint model     solid element joint model     seismic    

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Influence of site conditions on seismic design parameters for foundations as determined via nonlinear

Muhammad Tariq A. CHAUDHARY

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 275-303 doi: 10.1007/s11709-021-0685-0

Abstract: geotechnical properties and the geological setting, influence the near-surface response of strata subjected to seismicthe last three parameters are sensitive to the level of nonlinear strain induced in the strata due to seismicIt was also found that variations in soil properties influenced seismic design parameters in soil typePredictive relationships for , , and were derived based on the 1D seismic site response analysisThe need to incorporate and in the metrics for determining , , and for the seismic design of

Keywords： site effects     1D seismic site response analysis     sensitivity analysis     foundations     shear wave velocity     soil    

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A hybrid LQR-PID control design for seismic control of buildings equipped with ATMD

Amir Hossein HEIDARI, Sadegh ETEDALI, Mohamad Reza JAVAHERI-TAFTI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 44-57 doi: 10.1007/s11709-016-0382-6

Abstract: LQR-PID controller, while having the advantage of the classical PID controller, is easy to implement in seismic-excitedoptimization procedure based on a cuckoo search (CS) algorithm, the LQR-PID controller is designed for a seismicsimulation results indicate that the LQR-PID performs better than the LQR controller in reduction of seismic

Keywords： seismic control     tuned mass dampers     cuckoo search     PID controller     LQR controller    

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Investigation of the seismic behavior of grouted sandy gravel foundations using shaking table tests

Tiancheng WANG; Yu LIANG; Xiaoyong ZHANG; Zhihuan RUAN; Guoxiong MEI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 9,   Pages 1196-1211 doi: 10.1007/s11709-022-0865-6

Abstract: Grouting methods can be used to improve the seismic performance of natural sandy gravel foundations.Few studies have investigated the seismic behavior of sandy gravel foundations before and after groutingthis study, two shaking table tests were performed to evaluate the effect of grouting reinforcement on seismicstress-strain relationships of the two foundations were obtained by a linear inversion method to evaluate the seismic

Keywords： sandy gravel foundation     grouting-treated reinforcement     shaking table test     seismic behavior    

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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 postulate seismicbased on active earth pressure theory, which yields unconservative reinforcement loads required for seismicMost seismic analyses are limited to the determination of maximum reinforcement strength.Using the top-down procedure involves all of the possible failure surfaces for the seismic analyses of, and secondary reinforcement are conducted to investigate seismic impacts on the stability and lateral

Keywords： geosynthetics     reinforced soil     retaining walls     seismic performance    

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A method for examining the seismic performance of steel arch deck bridges

Cheng-Yu LIANG, Airong CHEN,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 311-320 doi: 10.1007/s11709-010-0080-8

Abstract: To examine the seismic resistance performance of a steel arch bridge during a strong earthquake, an approachThe seismic responses of the arch bridge exposed to strong earthquakes in two and three directions wereearthquake motion in the lateral direction on the elasto-plastic earthquake response was discussed, and the seismicThe results show that steel arch bridges have preferable seismic resistance under strong earthquake conditionsIt is feasible to examine the seismic performance of the arch bridge by ascertaining the out-of-plane

Keywords： seismic performance     earthquake damage     steel deck arch bridge    

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Innovative seismic retrofitting strategy of added stories isolation system

Min-Ho CHEY, J. Geoffrey CHASE, John B. MANDER, Athol J. CARR

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1,   Pages 13-23 doi: 10.1007/s11709-013-0195-9

Abstract: The seismic performance of “added stories isolation” (ASI) systems are investigated for 12-story momentanalyses are used to compute various response performances and reduction factors across a wide range of seismicResults show that ASI systems can effectively manage seismic response for multi-degree-of freedom (MDOF

Keywords： added stories     seismic isolation     tuned mass damper     parametric optimization     statistical method    

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Title Author Date Type Operation

Truss-arch model for shear strength of seismic-damaged SRC frame columns strengthened with CFRP sheets

Sheng PENG, Chengxiang XU, Xiaoqiang LIU

Journal Article

Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets

Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT

Journal Article

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

Journal Article

Effects of green roof damping and configuration on structural seismic response

Journal Article

Performance-based seismic assessment of a historical masonry arch bridge: Effect of pulse-like excitations

Journal Article

Variability of waste copper slag concrete and its effect on the seismic safety of reinforced concrete

Journal Article

Efficiency of scalar and vector intensity measures for seismic slope displacements

Gang WANG

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

Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Journal Article

Influence of site conditions on seismic design parameters for foundations as determined via nonlinear

Muhammad Tariq A. CHAUDHARY

Journal Article

A hybrid LQR-PID control design for seismic control of buildings equipped with ATMD

Amir Hossein HEIDARI, Sadegh ETEDALI, Mohamad Reza JAVAHERI-TAFTI

Journal Article

Investigation of the seismic behavior of grouted sandy gravel foundations using shaking table tests

Tiancheng WANG; Yu LIANG; Xiaoyong ZHANG; Zhihuan RUAN; Guoxiong MEI

Journal Article

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

Journal Article

A method for examining the seismic performance of steel arch deck bridges

Cheng-Yu LIANG, Airong CHEN,

Journal Article

Innovative seismic retrofitting strategy of added stories isolation system

Min-Ho CHEY, J. Geoffrey CHASE, John B. MANDER, Athol J. CARR

Journal Article