Experimental behavior of concrete-filled double-skin steel tubular (CFDST) stub members under axial compression: review of specimen properties and test results
Description
Within the context of a thorough review on the experimental behavior of concrete-filled double-skin steel tubular (CFDST) stub members under axial compression, based on numerous publications over a 20-year time span, the pertinent test results, as well as the properties of the approximately 250 specimens involved in these tests, are accumulated in this worksheet. The information for each specimen includes several geometric characteristics, either already provided by the authors or calculated by the creators of this worksheet based on the available information, material properties of the steel tubes and the concrete core, and other key-parameters, such as the hollowness-ratio, the confinement factor and slenderness. The results of all tests are presented in terms of both ultimate load and absorbed energy, the latter being derived from the area under the available load-displacement curves, digitized for this purpose. As a means of efficiency assessment, the ratio of the ultimate load of each CFDST specimen to the summed-up ultimate loads of its components tested individually is also provided, in addition to similar ratios concerning the amounts of absorbed energy.