To study the behavior and design of tubed circular steel reinforced concrete (TCSRC) short column under axial compressive loads, a nonlinear finite element model (FEM) has been developed to simulate this kind of struc...To study the behavior and design of tubed circular steel reinforced concrete (TCSRC) short column under axial compressive loads, a nonlinear finite element model (FEM) has been developed to simulate this kind of structure. Depending on the FEM results, an elastic-plastic analysis was carried out to clarify the status of steel tube, then a simplified procedure was proposed to predict the compressive axial load strength. The results obtained from this procedure were compared with the test results. It is found that they agree well each other.展开更多
In this study,innovative Lightweight Self-compacting Geopolymer concrete made of industrial and agricultural wastes is developed and used as the in-fill material in Fiber Reinforced Polymer(FRP)composite columns.The a...In this study,innovative Lightweight Self-compacting Geopolymer concrete made of industrial and agricultural wastes is developed and used as the in-fill material in Fiber Reinforced Polymer(FRP)composite columns.The axial compressive performance of the columns is investigated with critical parameter variations such as the effect of the Diameter to thickness(D/t)ratio and fiber orientation of the FRP tube.Two types of D/t ratios,i.e.,30 and 50,and three fiber orientations±0°,±30°,and±45°were used for the key parameter variations.An increased D/t ratio from 30 to 50 reduces the performance in terms of load despite increasing the deformation.The columns containing the fiber orientation of±0°exhibit greater performance compared to other types of fiber orientation(±30°and±45°).The experimental results and failure patterns were compared and validated against the numerical and theoretical studies.A Finite Element model is developed and validated with the experimental results with errors ranging from 0.84%to 4.57%.The experimental results were validated against various existing theoretical prediction models with a percentage error of 7%to 14%An improved theoretical model is proposed for predicting the axial load of concrete-filled FRP composite columns.展开更多
基金Sponsored by the National Natural Science Foundation of China (Grant No.50708027)National Key Technology R&D Program of China(Grant No.2006BAJ01B02)
文摘To study the behavior and design of tubed circular steel reinforced concrete (TCSRC) short column under axial compressive loads, a nonlinear finite element model (FEM) has been developed to simulate this kind of structure. Depending on the FEM results, an elastic-plastic analysis was carried out to clarify the status of steel tube, then a simplified procedure was proposed to predict the compressive axial load strength. The results obtained from this procedure were compared with the test results. It is found that they agree well each other.
基金support by All India Council for Technical Education(AICTE)under Research Promotion Scheme,File No.8232/RIFD/RPS(POLICY-1)/2018-19.
文摘In this study,innovative Lightweight Self-compacting Geopolymer concrete made of industrial and agricultural wastes is developed and used as the in-fill material in Fiber Reinforced Polymer(FRP)composite columns.The axial compressive performance of the columns is investigated with critical parameter variations such as the effect of the Diameter to thickness(D/t)ratio and fiber orientation of the FRP tube.Two types of D/t ratios,i.e.,30 and 50,and three fiber orientations±0°,±30°,and±45°were used for the key parameter variations.An increased D/t ratio from 30 to 50 reduces the performance in terms of load despite increasing the deformation.The columns containing the fiber orientation of±0°exhibit greater performance compared to other types of fiber orientation(±30°and±45°).The experimental results and failure patterns were compared and validated against the numerical and theoretical studies.A Finite Element model is developed and validated with the experimental results with errors ranging from 0.84%to 4.57%.The experimental results were validated against various existing theoretical prediction models with a percentage error of 7%to 14%An improved theoretical model is proposed for predicting the axial load of concrete-filled FRP composite columns.
