在同一地震烈度下，方形钢管混凝土结构在不同地震波作用下的地震反应有所不同。
Under the same earthquake intensity, the concrete-filled steel tubular frame has different response.
目前钢管混凝土结构的主要截面形式为方形和圆形。
At present, the section types of concrete-filled steel tube included square shape and circular shape.
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。
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).
椭圆形截面可以比圆形、方形和多边形截面更有效地折减流体对椭圆形钢管混凝土所作用的荷载。
Compared with the cross-section shape of circle, square, polygon, elliptical section can be more effective in reduction of the load that the fluid ACTS on it.
椭圆形截面可以比圆形、方形和多边形截面更有效地折减流体对椭圆形钢管混凝土所作用的荷载。
Compared with the cross-section shape of circle, square, polygon, elliptical section can be more effective in reduction of the load that the fluid ACTS on it.
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