| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 98 === The experimental of the concrete filled box column with tie rods test result, according to the Taiwan SRC code the seismic design limited when the material used 3.5tf/cm^2 grade of steel plate and the 420kgf/cm^2 concrete stress. The column sections width-to-thickness ratio should not larger than 42. In this thesis, the experiment will plan 3 specimens of CFBC with b/t of 40, 48 and 60 without tie rods to investigated the flexural behavior and 7 specimens of CFBC with b/t of 48 and 60 equip the tie rods. From the test result, the specimens without tie rod the plastic drift angles are all larger than 3%. It also provides a method of estimating the tie rods confining stress. The confining stress has effectual to improved the plastic drift angles of CFBC, if the plastic drift angles of CFBC with b/t of 48 and 60 can be as good as 40 when the tie rods can provide the confining stress lager than 35kgf/cm^2.
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