Abstract：In this work, six circular tubed steel-reinforced high-strength concrete (CTSRC) short columns are tested under compression, and the effects of eccentricity and diameter-to-thickness ratio on the tests are particularly investigated.The test results show that the dual constraints from the internal steel and the external steel tube can effectively improve the brittleness of the high-strength concrete and significantly increase the load-bearing capacity of the test specimens; the constraint effect of the steel tube shall be increased significantly with the decrease of the diameter-to-thickness ratio, that is, the smaller diameter-to-thickness ratio may lead to the better ductility and the higher ultimate capacity; however, the improvement extents of ductility and load-bearing capacity of specimens shall be negatively correlated to the eccentricity.On this basis, the ABAQUS software was firstly used to verify the test results, and it was found that the numerical results were in good agreement with the experimental results.Furthermore, the parametric study was conducted by using the FE method to provide more experimental results for the test database.Systematic analyses were performed on some parameters, including eccentricity, diameter-to-thickness ratio, steel strength and concrete strength.It was found that the concrete strength and diameter-to-thickness ratio are the two most important factors affecting the enhancement of load capacity and ductility, but the improvements of the strength and deformation may decrease with the increment of eccentricity.Finally, some suggestions for the columns in practical design were proposed based on the finite element analysis.
王吉忠 张硕 杨柳 王昕培. 圆钢管约束型钢高强混凝土短柱的受压#br#
性能试验研究及有限元分析#br#[J]. 土木工程学报, 2020, 53(6): 21-32.
Wang Jizhong Zhang Shuo Yang Liu Wang Xinpei. Experimental study and finite element analysis on compressive behavior of#br#
circular tubed steel-reinforced high-strength concrete short columns. 土木工程学报, 2020, 53(6): 21-32.
