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。
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。
We specialize in manufacturing and selling cold-rolled precision strip steel, bright strip steel and black strip steel, grilled blue ribbon, and thin-walled tube.
我们专业生产和销售冷轧精密带钢，光亮带钢和黑带钢，烤蓝丝带，和薄壁管。
We specialize in manufacturing and selling cold-rolled precision strip steel, bright strip steel and black strip steel, grilled blue ribbon, and thin-walled tube.
我们专业生产和销售冷轧精密带钢，光亮带钢和黑带钢，烤蓝丝带，和薄壁管。
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