Citation: | ZHANG Jianwei, LIU Jiao, LI Xiangyu, CAO Wanlin, SHEN Zhaoxu. Experiment Study of Eccentric Compressive Property of High-strength Concrete Filled Precast High-strength Concrete Tube Column With HRB600 Steel Bars[J]. Journal of Beijing University of Technology, 2019, 45(11): 1041-1049. DOI: 10.11936/bjutxb2019040023 |
To investigate the eccentric compressive properties of high-strength concrete filled precast high-strength concrete tube column with HRB600 steel bars, three columns with cross-section dimensions of 600 mm×600 mm were tested. The influence of design parameters such as the concrete strength of precast tube, and the content of steel fiber of the eccentric compression performance of high-strength concrete filled precast high-strength concrete tube column with HRB600 steel bars was discussed, comparing with the high-strength concrete column with HRB600 steel bars under eccentric compression. Results show that the failure characteristics, load-deflection curves, steel strain development law of high-strength concrete filled precast high-strength concrete tube columns with HRB600 steel bars are basically consistent with high-strength concrete column with HRB600 steel bars. With the increase of the concrete strength of the precast tube, the bearing capacity of column increases. Adding steel fiber improves the bearing capacity and ductility of the columns. Compared with the cast-in-place concrete columns, the precast concrete tube columns with smooth surface is slightly poorer in overall performance, the early stiffness is degraded faster, and the bearing capacity is lower. For high-strength concrete filled precast high-strength concrete tube columns with HRB600 steel bars, it is recommended to calculate the eccentric compression bearing capacity by using the method of superposition method.
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