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学者姓名：陈适才
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摘要 ：
基于MSC/Patran的建筑结构火灾反应分析系统研究
关键词 ：
FORTRAN FORTRAN MSC/Patran MSC/Patran 软件开发 软件开发 PCL PCL 火灾反应 火灾反应
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| GB/T 7714 | 张海潮 , 侯立群 , 陈适才 et al. 基于MSC/Patran的建筑结构火灾反应分析系统研究 [J]. | 张海潮 , 2021 , 40 (3) : 327-329 . |
| MLA | 张海潮 et al. "基于MSC/Patran的建筑结构火灾反应分析系统研究" . | 张海潮 40 . 3 (2021) : 327-329 . |
| APA | 张海潮 , 侯立群 , 陈适才 , 消防科学与技术 . 基于MSC/Patran的建筑结构火灾反应分析系统研究 . | 张海潮 , 2021 , 40 (3) , 327-329 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
为适应建筑特殊设计与分析的需要,研究了整体结构火灾反应分析的系统实现方法,并以MSC/Patran为平台,利用其提供的PCL,结合Fortran语言,通过客户化以及窗体增设等技术开发了建筑结构火灾反应分析系统。系统采用了自开发纤维梁与分层壳单元模型以及结构瞬态热传导分析模块,能够实现火灾下建筑结构火灾反应过程计算与分析,为建筑结构火灾安全设计与分析提供分析工具和参考依据。
关键词 ：
软件开发 软件开发 MSC/Patran MSC/Patran PCL PCL Fortran Fortran 火灾反应 火灾反应
引用：
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| GB/T 7714 | 张海潮 , 侯立群 , 陈适才 . 基于MSC/Patran的建筑结构火灾反应分析系统研究 [J]. | 消防科学与技术 , 2021 , 40 (03) : 327-329 . |
| MLA | 张海潮 et al. "基于MSC/Patran的建筑结构火灾反应分析系统研究" . | 消防科学与技术 40 . 03 (2021) : 327-329 . |
| APA | 张海潮 , 侯立群 , 陈适才 . 基于MSC/Patran的建筑结构火灾反应分析系统研究 . | 消防科学与技术 , 2021 , 40 (03) , 327-329 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Circular concrete-filled double steel tubular (CFDST) column is a high-performance composite column that has significant potential to be used in the construction of high-rise composite structures. This paper presents experimental and strength computational investigations on CFDST short columns that are subjected to eccentric compression load. A total of sixteen CFDST stub columns, two concrete-filled steel tubular (CFST) columns, and two double-skin concrete-filled steel tubular (DCFST) columns were tested to investigate their structural performance. The test behavior of the CFDST column loaded eccentrically is discussed and compared against its CFST and DCFST counterparts. The test results show that the CFDST column has improved strength and ductility under eccentric loading when compared with other composite columns. The strengths of the CFDST stub columns in this study together with the test strengths from the literature were used to assess the strength predictions by Eurocode 4 and AISC 360-16. It was found that the current predictions generally underestimate or overestimate the strengths. A new reduction factor for predicting the ultimate strengths of CFDST short columns under eccentric compression is proposed based on the test results. By adopting the newly proposed reduction factor and design method, the design predictions are found to be improved that provide reasonable estimations for circular CFDST columns loaded eccentrically.
关键词 ：
Composite columns Composite columns Concrete-filled double steel tubes Concrete-filled double steel tubes Eccentric compression Eccentric compression Stub columns Stub columns Ultimate strength Ultimate strength
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| GB/T 7714 | Ci, Junchang , Ahmed, Mizan , Jia, Hong et al. Testing and strength prediction of eccentrically-loaded circular concrete-filled double steel tubular stub-columns [J]. | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2021 , 186 . |
| MLA | Ci, Junchang et al. "Testing and strength prediction of eccentrically-loaded circular concrete-filled double steel tubular stub-columns" . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH 186 (2021) . |
| APA | Ci, Junchang , Ahmed, Mizan , Jia, Hong , Chen, Shicai , Zhou, Daxing , Hou, Liqun . Testing and strength prediction of eccentrically-loaded circular concrete-filled double steel tubular stub-columns . | JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH , 2021 , 186 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Elliptical concrete-filled stainless steel tubular (CFSST) columns are high-performance composite columns that have the enormous potentiality to be used in composite construction in the near future. However, to date, limited studies on the performance analysis of such columns under axial compression have been performed taking into account the accurate material laws of stainless steel and the confined concrete. This paper presents a mathematical model to investigate the axial performance of elliptical CFSST short columns. Accurate material laws of stainless steel and the confined concrete are incorporated in the numerical modeling to capture their true performance. Independent test results are utilized to validate the accuracy of the mathematical predictions. A parameter study is performed to study the important column parameters on their axial performance. The investigations of the accuracy of the existing design models for CFST columns in designing axially loaded elliptical CFSST columns are performed with the test and numerical predictions.
关键词 ：
Composite columns Composite columns Concrete-filled steel tubes Concrete-filled steel tubes Elliptical cross-section Elliptical cross-section Nonlinear analysis Nonlinear analysis Stainless steel Stainless steel
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| GB/T 7714 | Ahmed, Mizan , Ci, Junchang , Yan, Xi-Feng et al. Nonlinear analysis of elliptical concrete-filled stainless steel tubular short columns under axial compression [J]. | STRUCTURES , 2021 , 32 : 1374-1385 . |
| MLA | Ahmed, Mizan et al. "Nonlinear analysis of elliptical concrete-filled stainless steel tubular short columns under axial compression" . | STRUCTURES 32 (2021) : 1374-1385 . |
| APA | Ahmed, Mizan , Ci, Junchang , Yan, Xi-Feng , Chen, Shicai . Nonlinear analysis of elliptical concrete-filled stainless steel tubular short columns under axial compression . | STRUCTURES , 2021 , 32 , 1374-1385 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In this paper, the structural behavior of concrete-filled double steel tubular (CFDST) stub columns composed of square hollow sections is investigated experimentally and numerically. The experimental program comprises compression tests on short columns loaded concentrically. The test parameters mainly focused on the influences of the width-to-thickness ratios of steel tubes and concrete strength on the axial behavior of CFDST stub columns. Finite element (FE) models are also developed to investigate the influences of a wide range of structural parameters on their axial performance. It is observed that square CFDST columns have improved strength and ductility compared to their CFST and DCFST counterparts. Finally, a calculation formula is proposed to predict their ultimate compressive strengths under the axial compression load.
关键词 ：
axial load axial load concrete-filled steel tube concrete-filled steel tube double steel double steel FE model FE model stub columns stub columns
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| GB/T 7714 | Ci, Junchang , Ahmed, Mizan , Jia, Hong et al. Experimental and numerical investigations of square concrete-filled double steel tubular stub columns [J]. | ADVANCES IN STRUCTURAL ENGINEERING , 2021 , 24 (11) : 2441-2456 . |
| MLA | Ci, Junchang et al. "Experimental and numerical investigations of square concrete-filled double steel tubular stub columns" . | ADVANCES IN STRUCTURAL ENGINEERING 24 . 11 (2021) : 2441-2456 . |
| APA | Ci, Junchang , Ahmed, Mizan , Jia, Hong , Chen, Shicai , Zhou, Daxing , Hou, Liqun . Experimental and numerical investigations of square concrete-filled double steel tubular stub columns . | ADVANCES IN STRUCTURAL ENGINEERING , 2021 , 24 (11) , 2441-2456 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The accurate prediction of the concrete confinement effects in concrete-filled double-skin steel tubular (CFDST) columns composed of a circular section is vital in stimulating their true structural performance. However, existing concrete confinement models for such columns were developed based on limited studies and may not accurately predict their axial responses under axial loading. In this paper, a numerical model is developed to study the nonlinear performance of axially-loaded short CFDST columns incorporating an accurate concrete confinement model. Herein, a novel expression to calculate the lateral confining pressure on the confined concrete of the CFDST column is proposed considering the influences of a wide range of important column parameters. Furthermore, a reduction factor to accurately predict the post-peak behavior of confined concrete is suggested based on the previous test results. The accuracy of the numerical model incorporating the proposed concrete confinement model is verified against the experimental tests. The accuracy of the existing concrete confinement models is also evaluated and compared with the one proposed in this study. It is demonstrated that the proposed confinement model can yield the axial performance of CFDST columns more accurately. A parameter study is then performed to analyze the impacts of important column parameters on the axial performance of such a column. The applicability of the existing design standards in designing CFDST columns is verified. Lastly, a simple and accurate design equation to quantify the ultimate axial load is proposed.
关键词 ：
Composite columns Composite columns Concrete-filled steel tubes Concrete-filled steel tubes Double-skin Double-skin Nonlinear analysis Nonlinear analysis Short columns Short columns
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| GB/T 7714 | Ahmed, Mizan , Ci, Junchang , Yan, Xi-Feng et al. Numerical modeling of axially loaded circular concrete-filled double-skin steel tubular short columns incorporating a new concrete confinement model [J]. | STRUCTURES , 2021 , 30 : 611-627 . |
| MLA | Ahmed, Mizan et al. "Numerical modeling of axially loaded circular concrete-filled double-skin steel tubular short columns incorporating a new concrete confinement model" . | STRUCTURES 30 (2021) : 611-627 . |
| APA | Ahmed, Mizan , Ci, Junchang , Yan, Xi-Feng , Lin, Siqi , Chen, Shicai . Numerical modeling of axially loaded circular concrete-filled double-skin steel tubular short columns incorporating a new concrete confinement model . | STRUCTURES , 2021 , 30 , 611-627 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
Shear walls of cold-formed steel (CFS) with high aspect ratios could be used in buildings with large openings such as doors and windows. However, the performance of CFS shear walls with high aspect ratios remains unclear due to limited test data. This research aimed to explore the mechanic performance and strength reduction factor of CFS shear walls with high aspect ratios through an experimental study. Five full-scale specimens were tested under monotonic loading, and the failure mechanism, bearing capacity, stiffness, ductility, and energy dissipation of the specimens were obtained. The test results indicated that shear walls with small aspect ratios typically fail as a result of connection damage to horizontal seams and corners, whilst shear walls with high aspect ratios commonly buckle at both the end stud and bottom track. As the aspect ratio increased, the initial stiffness and capacity decreased, while the energy dissipation per unit length increased due to greater flexibility. Ultimately, this study proposes a more reasonable design formula for strength reduction factors based upon a regression analysis of the test data. This will facilitate a more sustainable design approach, and fulfills current standards in engineering practice.
关键词 ：
Cold-formed steel shear wall Cold-formed steel shear wall Experimental study Experimental study High aspect ratios High aspect ratios Shear capacity Shear capacity Strength reduction factor Strength reduction factor
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| GB/T 7714 | Yan, Zhao , Cheng, Yu , Shicai, Chen et al. Shear performance of cold-formed steel shear walls with high-aspect-ratios [J]. | STRUCTURES , 2021 , 33 : 1193-1206 . |
| MLA | Yan, Zhao et al. "Shear performance of cold-formed steel shear walls with high-aspect-ratios" . | STRUCTURES 33 (2021) : 1193-1206 . |
| APA | Yan, Zhao , Cheng, Yu , Shicai, Chen , Ziqin, Jiang , Wenying, Zhang . Shear performance of cold-formed steel shear walls with high-aspect-ratios . | STRUCTURES , 2021 , 33 , 1193-1206 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
A circular concrete-filled double steel tubular column (CFDST) with a square hollow section (SHS) as an inner tube is introduced as a new form of a composite column in the paper. A series of axial compression tests that are carried out on this new type of composite column is reported in this study. Three-dimensional models based on the finite element (FE) program ABAQUS are also developed for such columns employing a modified confined concrete constitutive model for the core concrete. The accuracy of the model is verified by comparing the FE model with the experimental results. The effects of various parameters on the load-axial strain response of CFDST short columns are studied by using the validated FE model. The suggested formulas based on the confined concrete model for calculating the bearing capacity of CFDST short columns are proposed. © 2020 Elsevier Ltd
关键词 ：
ABAQUS ABAQUS Columns (structural) Columns (structural) Compression testing Compression testing Concretes Concretes
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| GB/T 7714 | Ci, Junchang , Jia, Hong , Ahmed, Mizan et al. Experimental and numerical analysis of circular concrete-filled double steel tubular stub columns with inner square hollow section [J]. | Engineering Structures , 2021 , 227 . |
| MLA | Ci, Junchang et al. "Experimental and numerical analysis of circular concrete-filled double steel tubular stub columns with inner square hollow section" . | Engineering Structures 227 (2021) . |
| APA | Ci, Junchang , Jia, Hong , Ahmed, Mizan , Chen, Shicai , Zhou, Daxing , Hou, Liqun . Experimental and numerical analysis of circular concrete-filled double steel tubular stub columns with inner square hollow section . | Engineering Structures , 2021 , 227 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
This article investigates the axial compressive performance of concrete-filled double steel tubular (CFDST) short columns composed of circular section loaded concentrically. An experimental program comprised of compression tests on short columns is carried out to examine their structural performance. Axial compression tests on conventional concrete-filled steel tubular (CFST) columns and double-skin concrete-filled steel tubular (DCFST) columns are also performed for comparison purposes. The test parameters include the diameter-to-thickness of the outer and inner steel tubes, concrete strength, and diameter ratio. The test results exhibit that CFDST short columns composed of the circular section have improved structural performance compared to its CFST and DCFST counterparts. A theoretical model is also presented to simulate the test ultimate strengths and load-axial strain relationships of CFDST columns. The existing design models proposed including the codified design specifications are evaluated against the collected test data for predicting the axial compressive strengths of circular CFDST columns. It is seen that the existing codified design models cannot yield their ultimate axial compressive strengths accurately. A practical artificial neural network (ANN) model is proposed to estimate the ultimate load of such columns loaded concentrically.
关键词 ：
artificial neural network artificial neural network CFDST columns CFDST columns composite columns composite columns compressive strengths compressive strengths short columns short columns
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| GB/T 7714 | Ci, Junchang , Ahmed, Mizan , Viet-Linh Tran et al. Axial compressive behavior of circular concrete-filled double steel tubular short columns [J]. | ADVANCES IN STRUCTURAL ENGINEERING , 2021 . |
| MLA | Ci, Junchang et al. "Axial compressive behavior of circular concrete-filled double steel tubular short columns" . | ADVANCES IN STRUCTURAL ENGINEERING (2021) . |
| APA | Ci, Junchang , Ahmed, Mizan , Viet-Linh Tran , Jia, Hong , Chen, Shicai . Axial compressive behavior of circular concrete-filled double steel tubular short columns . | ADVANCES IN STRUCTURAL ENGINEERING , 2021 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
In the shaking table tests of underground structures, the scale ratios of the soil and structure are inconsistent. To this end, a scaled model soil was developed in this study. Through a series of tests, the dynamic response of the model soil was investigated. A clay mixed with sawdust was designed for shaking table tests based on the predominant period similarity relationship between the structure and the foundation soil. The sawdust-mixed clay was subjected to a series of shaking table tests at Beijing University of Technology using a rigid prefabricated continuous model box (dimensions: 7.7 m × 3.2 m × 1.2 m). Through the tests, the performance of the model box and the nonlinear seismic behavior of the model soil were studied. The results are as follows: (i) The boundary effect of the model box was negligible during the test. (ii) The predominant frequencies of the model soil shifted toward lower values with increasing shaking intensity. This indicated that the model soil became increasingly softer and that the nonlinear effect of the soil was more evident. (iii) With the increase in the shaking intensity, the peak acceleration of the model soil at the same measured points increased, whereas their amplification factors decreased. In addition, the amplification factors first decreased and then increased from the bottom to the top of the soil. This might have been due to the increase in the shear strain and decrease in the shear modulus of the soil with increasing shaking intensity. (iv) The shear modulus of the soil was closely related to the confining pressure. At the same shaking intensity, the shear stress increased, and the shear strain decreased from top to bottom of the model soil. © 2020 Elsevier Ltd
关键词 ：
Dynamic response Dynamic response Elastic moduli Elastic moduli Shear strain Shear strain Shear stress Shear stress Soils Soils Underground structures Underground structures
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| GB/T 7714 | Chen, Hongjuan , Chen, Su , Chen, Shicai et al. Dynamic behavior of sawdust-mixed soil in shaking table test [J]. | Soil Dynamics and Earthquake Engineering , 2021 , 142 . |
| MLA | Chen, Hongjuan et al. "Dynamic behavior of sawdust-mixed soil in shaking table test" . | Soil Dynamics and Earthquake Engineering 142 (2021) . |
| APA | Chen, Hongjuan , Chen, Su , Chen, Shicai , Zhang, Xueming , Wang, Lihui . Dynamic behavior of sawdust-mixed soil in shaking table test . | Soil Dynamics and Earthquake Engineering , 2021 , 142 . |
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