Flexural Behavior of High Strength Concrete-Filled Steel Box Columns

• Main Authors: Yonathan Sudarmadji, 陳建國
• Other Authors: Cheng-Cheng Chen
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/494p8p

碩士 === 國立臺灣科技大學 === 營建工程系 === 99 === This thesis is to experimentally investigate seismic behavior of concrete filled box column (CFBC) subjected to constant axial load combined cyclically lateral loading. This experiment used the material with 3.5 tf/cm2 for steel plate and 700 kgf/cm2 for concrete stress, in which Taiwan SRC code has 560 kgf/cm2 as the limit for concrete stress. The experiment will test 10 columns of CFBC. The parameters studied in this test comprised: the required confining stress of tie rods for CFBC, effectiveness of b/t ratio, and the suitability of high strength concrete. Test result showed that: (1) specimens without tie rods experienced the plastic hinge rotation capacity larger than 3%; (2) confining stress of the tie rods can improve the moment capacity of the column up to 10%; (3) confining stress of tie rods has improved the plastic hinge rotation capacity effectively; (4) the specimen with b/t (width to thickness ratio) of 48 and 60 can be as good as b/t of 40 when the tie rods can provide the confining stress larger than 82 kgf/cm2.