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。
An axially compressive thin-walled steel element on elastic foundation is adopted to deduce the critical stress and critical diameter to thickness ratio for circular steel tube in local buckling.
在此基础上，把薄壁钢管纵向单元作为支承在弹性地基上的压杆，推导出钢管出现局部屈曲的临界应力和临界径厚比。
The invention discloses a node for a thin-wall steel tube regenerative mixed column and a reinforced concrete beam and a construction method thereof.
本发明公开了薄壁钢管再生混合柱与钢筋混凝土梁的节点及其施工方法。
The present paper described the high strength thin wall tube steel used for oil transferring in the exfremety cold region.
本文介绍了寒冷地区用高强度薄壁地面输油管用钢。
The present paper described the high strength thin wall tube steel used for oil transferring in the exfremety cold region.
本文介绍了寒冷地区用高强度薄壁地面输油管用钢。
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