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| 1 | Seismic Behavior of Diaphragm-Through Connections of Concrete-Filled Square Steel Tubular Columns and H-Shaped Steel Beams显示文摘Based on the introductions of a type of diaphragm-through connection between concrete-filled square steel tubular columns (CFSSTCs) and H-shaped steel beams,a finite element model of the connection is developed and used to investigate the seismic behavior of the connection.The results of the finite element model are validated by a set of cyclic loading tests.The cyclic loading tests and the finite element analyses indicate that the failure mode of the suggested connections is plastic hinge at the beam with inelastic rotation angle exceeding 0.04 rad.The suggested connections have sufficient strength,plastic deformation and energy dissipation capacity to be used in composite moment frames as beam-to-column rigid connections. | 荣彬 陈志华 Apostolos Fafitis 苗纪奎 | 2013 | Transactions of Tianjin University2013，19，3： | 6 |
| 2 | Axial Compression Behavior and Analytical Method of L-Shaped Column Composed of Concrete-Filled Square Steel Tubes显示文摘Based on the characteristics of an L-shaped column composed of concrete-filled square steel tubes, the axial compression experiment and nonlinear finite element analysis were carried out to study the mechanical property of the L-shaped column. The load-displacement curve for the L-shaped column, the deflection and load-strain curves for the mono columns were obtained by the axial compression experiment. The results show that the L-shaped column exhibits a flexural-torsional buckling failure mode. The numerical simulation by the finite element analysis shows that the bearing capacity and failure mode are in accordance with those of the axial compression experiment and the feasi- bility of the finite element analysis is proved. For the calculation of the bearing capacity of the L-shaped column com- posed of concrete-filled square steel tubes, an analytical method is proposed based on the theory of the elastic stability and spatial truss model. The results of the analytical method are in good agreement with those of the axial compression experiment and the finite element analysis. | 荣彬 陈志华 APOSTOLOS Fafitis 杨楠 | 2012 | Transactions of Tianjin University2012，18，3： | 5 |
| 3 | Influence of Axial Load Ratio on Shear Behavior of Through-Diaphragm Connections of Concrete-Filled Square Steel Tubular Columns显示文摘Nonlinear finite element analysis and parametric studies were carried out to study the influence of axial load ratio on the shear behavior of the through-diaphragm connections of concrete-filled square steel tubular columns. The analysis reveals that smaller axial load ratio can improve the shear bearing capacity and ductility while larger axial load ratio will decrease the shear behavior of the through-diaphragm connections. The parametric studies indicate that the axial load ratio should be limited to less than 0.4 and its influence should be considered in the analysis and design of such connections. | 张广泰 韩建红 荣彬 Apostolos Fafitis | 2015 | Transactions of Tianjin University2015，21，4： | 2 |
| 4 | Flexural Capacity Formula of Diaphragm-Through Joints of Concrete-Filled Square Steel Tubular Columns显示文摘Finite element analysis and parametric studies were performed to investigate the flexural capacity of the panel zone of diaphragm-through joints between concretefilled square steel tubular columns and H-shaped steel beams.Through the comparisons of failure modes,load–displacement curves,and bearing capacity,it was found that the flexural capacity of the panel zone of diaphragmthrough joints was determined by the tensile action and influence of the web of H-shaped steel beams,and the axial load should be taken into account.The steel tube and the diaphragm were the major parts of the joint that resisted the bending moment.The contribution of in-filled concrete had little influence on the flexural capacity of the panel zone of the joint and could be neglected.According to the results of these numerical studies,a formula that considered the influence of the web of H-shaped steel beams and the axial load was developed based on the yield lines in the diaphragm and the steel tube.The results of the proposed formula were in good agreement with the numerical data of this investigation. | Bin Rong Rui Liu Zhenyu Li Changxi Feng Guangchao You Fafitis Apostolos | 2017 | Transactions of Tianjin University2017，23，3： | 1 |
| 5 | Predictions of Ultimate Behaviour of ConfinedColumns Subjected to Large deformations显示文摘 | Apostolos Fafitis and Surendra P Shah | 1985 | ACI Journal1985，，8235： | 1 |
| 6 | Axial compression stability of a crisscross section column composed of concrete- filled square steel tubes 显示文摘 | Chen Zhihua Rong Bin Fafitis Apostolos | 2009 | J Mech Mater Struct2009，4，10： | 1 |
| 7 | Axial Compression Stability of a Crisscross Section Column Composed of Con- crete-Filled Square Steel Tubes显示文摘 | Chen Zhihua Rong Bin Fafitis Apostolos | 2009 | Journal of Mechanics of Material and Structure2009，4，10： | 1 |
| 8 | Axial compression stability of a crisscross section column composed of concrete-filled square steel tubes 显示文摘 | CHEN ZHIHUA RONG BIN FAFITIS APOSTOLOS | 2009 | Mechanics of Advanced Materials and Structures2009，4，10： | 1 |
| 9 | Axial compressionstability of a crisscross section column composed of concrete-filled square steel tubes 显示文摘 | Chen Zhihua Rong Bin Apostolos Fafitis | 2009 | Journal of Mechanics of Materials andstructures2009，4，10： | 1 |
| 10 | 框架网格划分对钢筋用量的影响显示文摘针对如何节省钢材的问题,提出优化钢筋混凝土框架结构单位面积配筋量的方法.主要技术路线是探索板、梁尺寸及柱数目变化对构件内力分布和配筋量的影响.具体内容是将一个纵、横向长度给定的矩形建筑进行纵向长度均匀网格划分(每个网格线交点设有一根柱子),每种划分得到n个面积相同的网格.一般随着n的增大板配筋变小,梁与柱的配筋则增加,n将存在一个数值,使板、梁和柱的总体配筋量达到极值.模拟一层钢筋混凝土框架结构,分别对板、梁、柱的配筋进行配筋公式推导,得到n与三个构件配筋体积V的函数关系,并进一步转换成单位面积配筋量m与n的关系.以n为优化变量,利用Matlab获得函数变化及最小值,最后通过具体案例进行了演示. | 张培 朱涵 Apostolos Fafitis 刘春生 | 2014 | 沈阳工业大学学报2014，36，2： | 0 |
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