表明内（圆）钢管增强方钢管混凝土柱的耐火性能是明显的。
Results show that the fire resisting performance of the columns is efficient.
用试验与数值计算方法研究了普通方钢管混凝土柱的轴压承载能力。
The enhancement of the axial bearing capacity of ordinary square concrete-filled steel tubes was investigated experimentally and numerically.
将方钢管混凝土柱与组合扁梁结合，构成一种新型、高效的住宅钢结构体系。
A new kind of composite structure system composing of CFT columns and composite slim-floor beams was put forward, which has much efficiency.
钢骨-方钢管混凝土柱是一种组合柱设计模式，采用切线模量理论对该组合柱轴向受压稳定承载力进行分析。
Tangent modulus theory was introduced to determine the stability capacity of this new type of composite columns subjected to axial load.
钢骨-方钢管混凝土柱是一种组合柱设计模式，采用切线模量理论对该组合柱轴向受压稳定承载力进行分析。
Square steel tube column filled with steel-reinforced concrete is a new design model of steel-concrete composite columns.
根据变形协调原理，研究了钢管与混凝土轴压分配系数，并基于此提出了方钢管混凝土柱承载力计算的改进公式。
According to the deformation compatibility principle, distribution coefficient of axial force was discussed and the formula to compute the capacity of CFRT was developed.
为了研究方钢管混凝土柱内隔板式节点的抗弯受力性能，完成了3个方钢管混凝土柱内隔板式节点的低周反复荷载试验。
To investigate the flexural capacity of connections for concrete-filled steel square tubular columns with inner diaphragms, 3 specimens were tested under cyclic loading.
数值分析表明该节点用于方钢管混凝土柱与钢筋混凝土梁的节点，具有良好的性能且受力性能与在圆钢管混凝土结构中相似。
The numerical analyze results show that the core steel tube joint applied to concrete filled square steel tubular column and reinforced concrete beam have good mechanical property, and structure beh.
为研究方钢管约束高强混凝土短柱的轴压力学性能，进行了12个试件在循环轴压荷载作用下的试验研究。
To study the axial load behavior of square tube confined HSC short columns, 12 specimens was tested under cyclic axial compression.
以钢管的宽厚比、混凝土强度、钢管高宽比及试件有无纵筋为主要参数进行了20个方钢管约束钢筋高强混凝土轴压短柱的试验研究。
The ductility of the tested columns decrease with the increase of concrete strength and width-to-thickness ratio. (2) 20 square steel tubed RC columns were tested under static axial compression.
并结合方钢管混凝土组合异形柱的推广应用，对梁柱节点和维护墙体作法进行了探讨。
For special-shaped column composed of concrete-filled square steel tubes, research is done by three methods: superposition theory, finite element analysis and axial compression experiment.
并结合方钢管混凝土组合异形柱的推广应用，对梁柱节点和维护墙体作法进行了探讨。
For special-shaped column composed of concrete-filled square steel tubes, research is done by three methods: superposition theory, finite element analysis and axial compression experiment.
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