Abstract
Steel-concrete composite structure has been applied in bridge tower in recent years. In order to investigate the influence of different cross sections on the mechanical behaviors of composite bridge tower, two composite tower models with different cross sections, including rectangle and rectangle with chamfers, were designed and tested under axial compression. Through analysis of the local buckling modes and axial strain of the panels between the two models, it shows that in composite towers, compared with rectangle section, the section of rectangle with chamfers is more favorable in improving the capability of the tower to resist local buckling. For the panels in the chamfer have the smallest width-thickness ratio, so they can supply more advantageous support to their adjacent panels which are not in the chamfer and with the larger width-thickness ratio.
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