New type of CFTST columns with cold-formed longitudinal straight ribs is put forward to improve the mechanical capability of columns of concrete-filled thin-walled steel tube (CFTST).
为改善薄壁钢管混凝土柱的力学性能，提出了设冷弯直肋方形薄壁钢管混凝土柱的新型结构形式。
The CFST component is consisted of thin steel tube and concrete filled in it.
钢管混凝土构件是由薄钢管和填进的混凝土组成。
The Australian standard AS4100-1900 is the most accurate to calculate the thin wall steel tube strength.
用澳大利亚标准AS4100 - 1900计算薄壁钢管的强度最为准确。
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