Experimental Investigation of Dendriform Structure Under Static Loading

Ali Abdulmohsin Khamees ； Khalid K. Shadhan

《淡江理工學刊》 24卷1期 (2021/02) Pp. 57-64

https://doi.org/10.6180/jase.202102_24(1).0007

摘要

Tree-like steel columns have been used in vast structures with large spaces like airports and football stadiums. Very few studies dealt with the structural behavior of tree-like columns, and there are non-clear results about it. The objective of this study was to find the effect of the branch's height to total height and specimen's width to total width ratio on the structural behavior of a tree-like steel column (two-branch type). Seventeen plane specimens with a rectangular cross-section area were investigated. All specimens were tested under static load and evaluated in terms of maximum failure load, maximum vertical displacement, and failure mode. The two-branches type was taken, and the cross-section area of each branch was taken half of the trunk's cross-section area. Results showed that maximum failure load and buckling load increased between (2.5 - 28.9) % and (1.4 - 37.5) % respectively when the branch's height to total height ratio increased from 25 to 75 %; furthermore, they decreased between (7.2 - 42.3) % and (8.4 - 48.4) % respectively when the specimen's width to the total width increased from 25 to 100 %. Maximum vertical displacement decreased between (5.9 - 31.3) % when branching height to total height ratio increased; moreover, it increased between (2.0 - 46.2) % when the specimen width to total width increased. All specimens failed with buckling mode.

關鍵字

Tree-like column ； branching structure ； lightweight ； Dendriform structures