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Nano Research 2024年第5期17卷 4639-4640页

作者： Riming Nie Xiaokai Chen Zhongping Li Weicun Chu Si Ma Changqing Li Xiaoming Liu Yonghua Chen Zhuhua Zhang Wanlin Guo State Key Laboratory of Mechanics and Control of Mechanical Structures Key Laboratoryfor Itligent Nano Materials and Devices of the Ministry of EducationInstitute for Frontier ScienceNanjing University of Aeronautics and AstronauticsNarnjing 210016China Department of Chemical and Biomolecular Engineering Yonsei Universit50 Yonsei roSeodaemun-guSeoul 120749Republic of Korea College of Chemistry jilin UniversityChangchun 130012China Department of Energy and Chemical Engineering Ulsan National Instute of Science and Technology(UNIST)50 UNIST-gilEonyang-eupUju-gunUlsan 44919Republic of Korea Key Laboratory of Flexible Electronics(KLoFE) School of Flexible Electronics(Future Technologies)&Institute of Advanced Materials(IAM)Nanjing Tech University(Nanjing Tech)Nanjing 211816China

Erratum to Nano Research,2023,16(7):9387-9397 htps:/oi.or/0.100/1274-023-5603-040(1)One sentence in the article was unfortunately mispresented on page 9392.Instead of As shown in Fig.S19 in the ESM,the A2/A2 values of... 详细信息

关键词： COF columns perovskite

Contribution Regulations for Asian Journal of Traditional Medicines

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Asian Journal of Traditional Medicines 2024年第1期19卷 46-49页

Editorial Policy Asian Journal of Traditional Medicines is an international journal devoted to the advancement of research on traditional medicines.The followed areas are covered:scientific and technological developments and research achievements in the fields of traditional medicine resources,medicinal material processing,pharmacognosy,natural medicinal chemistry,quality control,pharmacology,pharmacy,and clinical efficacy.It has columns for monographs,reviews,full research articles,short articles,newsletters and clinical case reports of traditional Chinese medicines.

关键词： devoted journal columns

Contribution Regulations for Asian Journal of Traditional Medicines

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Asian Journal of Traditional Medicines 2024年第2期19卷 115-118页

关键词： devoted journal columns

Restoring-force model of modified RAC columns with silica fume and hybrid fiber

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Journal of Central South University 2017年第11期24卷 2674-2684页

作者：杨涛王社良刘伟 School of Environmental and Chemical Engineering Xi’an Polytechnic UniversityXi’an 710048China School of Civil Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Academy of Building Research of Shaanxi Provincial Xi’an 710082China

In order to establish a restoring-force model for modified concrete columns with recycled aggregates concrete(RAC), cyclic loading tests were carried out on five concretes with RAC columns and ordinary concrete frame columns under the combined influence with different admixtures and admixtures ratios(silica fume and hybrid fiber). The expressions for characteristic nodes of the skeleton curve were given by the analysis and numerical regression of the test results. In addition, the hysteretic rules of the restoring-force model and the expression for unloading stiffness were presented. Finally, we summed up the complete calculation method of the hysteretic restoring force, whose results were in good agreement with experiment. The results demonstrated that the proposed model could simulate and reflect the corresponding hysteretic behaviors, and the calculation method can provide the theoretical basis for the engineering application.

关键词： modified RAC columns skeleton curve unloading stiffness hysteretic rule restoring-force model

Behaviors of recycled aggregate concrete-filled steel tubular columns under eccentric loadings

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Frontiers of Structural and Civil Engineering 2019年第3期13卷 628-639页

作者： Vivian W.Y.TAM Jianzhuang XIAO Sheng LIU Zixuan CHEN Department of Structural Engineering Tongji UniversityShanghai 200092China University of Western Sydney School of ComputingEngineering and Mathematics and Institute for Infrastructure EngineeringLocked Bag 1797PenrithNSW 2751Australia

The paper investigates the behaviors of recycled aggregate concrete-filled steel tubular(RACFST)columns under eccentric loadings with the incorporation of expansive agents.A total of 16 RACFST columns were tested in this study.The main parameters varied in this study are recycled coarse aggregate replacement percentages(0%,30%,50%,70%,and 100%),expansive agent dosages(0%,8%,and 15%)and an eccentric distance of compressive load from the center of the column(0 and 40 mm).Experimental results showed that the ultimate stresses of RACFST columns decreased with increasing recycled coarse aggregate replacement percentages but appropriate expansive agent dosages can reduce the decrement;the incorporation of expansive agent decreased the ultimate stresses of RACFST columns but an appropriate dosage can increase the deformation ability.The recycled coarse aggregate replacement percentages have limited influence on the ultimate stresses of the RACFST columns and has more effect than that of the normal aggregate concretesteel tubular columns.

关键词： concrete filled steel tubes recycled aggregate concrete columns expansive agent eccentric load

Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural,shear,or axial failure modes

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Frontiers of Structural and Civil Engineering 2019年第5期13卷 1251-1270页

作者： Mohammad Reza AZADI KAKAVAND Reza ALLAHVIRDIZADEH Unit of Strength of Materials and Structural Analysis Institute of Basic Sciences in Engineering SciencesUniversity of InnsbruckInnsbruck 6020Austria ISISE Department of Civil EngineeringUniversity of MinhoGuimaraes 4800-058Portugal

Capacity of components subjected to earthquake actions is still a widely interesting research topic. Hence, developing precise tools for predicting drift capacities of reinforced concrete (RC) columns is of great interest. RC columns are not only frequently constructed, but also their composite behavior makes the capacity prediction a task faced with many uncertainties. In the current article, novel empirical approaches are presented for predicting flexural, shear and axial failure modes in RC columns. To this aim, an extensive experimental database was created by collecting outcomes of previously conducted experimental tests since 1964, which are available in the literature. It serves as the basis for deriving the equations for predicting the drift capacity of RC columns by different regression analyses (both linear with different orders and nonlinear). Furthermore, fragility curves are determined for comparing the obtained results with the experimental results and with previously proposed models, like the ones of ASCE/SEI41-13. It is demonstrated that the proposed equations predict drift capacities, which are in better agreement with experimental results than those computed by previously published models. In addition, the reliability of the proposed equations is higher from a probabilistic point of view.

关键词： flexural-shear-axial failure drift capacity reinforced concrete columns statistical analysis fragility curves

A General Equation for Calculating the‘True’Height of Transfer Unit in Extraction columns

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Chinese Journal of Chemical Engineering 1998年第3期6卷 49-54页

作者：骆广生李洪波费维扬汪家鼎清华大学化工系北京

Based on single drop mass transfer models and two phase flow equation,a general equationfor calculating the‘true’height of transfer unit of extraction columns was derived and tested withfour types of extraction colu... 详细信息

关键词： mass transfer extraction columns ’true’ height of transfer unit

FE modeling of concrete beams and columns reinforced with FRP composites

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Defence Technology（防务技术） 2021年第1期17卷 1-14页

作者： Farid Abed Chahmi Oucif Yousef Awera Haya H.Mhanna Hakem Alkhraisha Department of Civil Engineering American University of SharjahP.O.Box 26666United Arab Emirates Institute of Structural Mechanics(ISM) Bauhaus-Universitat WeimarMarienstraße 15D-99423WeimarGermany

Compression and flexure members such as columns and beams are critical in a structure as its failure could lead to the collapse of the structure.In the present work,numerical analysis of square and circle short columns,and reinforced concrete(RC)beams reinforced with fiber reinforced polymer composites are carried out.This work is divided into two parts.In the first part,numerical study of axial behavior of square and circular concrete columns reinforced with Glass Fiber Reinforced Polymer(GFRP)and Basalt Fiber Reinforced Polymer(BFRP)bars and spiral,and Carbon Fiber Reinforced Polymer(CFRP)wraps is conducted.The results of the first part showed that the axial capacity of the circular RC columns reinforced with GFRP increases with the increase of the longitudinal reinforcement ratio.In addition,the results of the numerical analysis showed good correlation with the experimental ones.An interaction diagram for BFRP RC columns is also developed with considering various eccentricities.The results of numerical modeling of RC columns strengthened with CFRP wraps revealed that the number and the spacing between the CFRP wraps provide different levels of ductility enhancement to the column.For the cases considered in this study,column with two middle closely spaced CFRP wraps demonstrated the best performance.In the second part of this research,flexural behavior of RC beams reinforced with BFRP,GFRP and CFRP bars is investigated along with validation of the numerical model with the experimental tests.The results resembled the experimental observations that indicate significant effect of the FRP bar diameter and type ont he flexural capacity of the RC beams.It was also shown that Increasing the number of bars while keeping the same reinforcement ratio enhanced the stiffness of the RC beam.

关键词： Numerical analysis BRFP GFRP CFRP columns Beams Experimental tests

Effect of axial load and transverse reinforcements on the seismic performance of reinforced concrete columns

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Frontiers of Structural and Civil Engineering 2019年第4期13卷 831-851页

作者： Mounir Ait BELKACEM Hakim BECHTOULA Nouredine BOURAHLA Adel Ait BELKACEM Department of Earthquake Engineering National Earthquake Engineering Research Centre (C.G.S) Algiers 16005 Algeria Department of Civil Engineering LGGC Laboratory Blida 1-University Blida 09000 Algeria Department of Civil Engineering Science & Technology University (USTHB) Algiers 16111 Algeria

The aim of this research is to assess the seismic performance of reinforced concrete columns under different axial load and transverse reinforcement ratios. These two parameters are very important as for the ductility, strength, stiffness, and energy dissipation capacity for a given reinforced concrete column. Effects of variable axial load ratio and transverse reinforcement ratio on the seismic performance of reinforced concrete columns are thoroughly analyzed. The finite element computer program Seismo-Structure was used to perform the analysis of series of reinforced concrete columns tested by the second author and other researchers. In order to reflect the reality and grasp the actual behavior of the specimens, special attention was paid to select the models for concrete, confined concrete, and steel components. Good agreements were obtained between the experimental and the analytical results either for the lateral force-drift relationships or for the damage progress prediction at different stages of the loading.

关键词： reinforced concrete columns axial load transverse reinforcement ductility

Modeling of co-current and counter-current bubble columns with an extended EMMS approach

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Particuology 2019年第3期17卷 126-135页

作者： Xiaoping Guan Ning Yang State Key Laboratory of Multi-phase Complex System Institute of Process Engineering Chinese Academy of Sciences P.O. Box 353 Beijing 100190 China

Bubble columns can be operated in semi-batch, co-current or counter-current mode. This study attempts to extend the dual-bubble-size (DBS) model, viz., the energy-minimization multi-scale (EMMS) model for gas-liquid systems, to co-current and counter-current bubble columns. With the increase of superficial liquid velocity, the predicted total gas holdup and regime transition are in accordance with experiments. A DBS drag model was then developed and incorporated into the CFD simulation. The total gas holdup and local gas holdup radial distribution in both the co-current and counter-current bubble columns are well estimated. The findings in the present work demonstrate that developing closure laws through the stability condition is of great significance in modeling complicated multi-scale flow in bubble columns.

关键词： Co-current Counter-current Bubble columns CFD Drag model