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重点研究通过混凝土中的混合钢纤维提高柱延性和韧性的方法。研究目的是评估与钢纤维含量和荷载条件相关的承载能力和变形能力,从而分析钢纤维混凝土和焊接组合方钢管在结构和耐火性能方面的相互作用。横截面形状和边界条件(荷载比)保持不变时,钢纤维混凝土加固的耐火性能可以提高1.1~1.3倍。由于钢纤维混凝土加固能够防止开裂,因此认为其区域耐火性能得到提高。此外,混凝土横截面受损甚微证明了其承载能力显著提高。
Emphasis will be placed on ways to improve column ductility and toughness by mixing steel fibers in concrete. The purpose of the study was to evaluate the bearing capacity and deformation capacity associated with steel fiber content and load conditions to analyze the structural and fire-resistant interaction of steel fiber reinforced concrete and welded square steel pipe. The cross-sectional shape and boundary conditions (load ratio) remain unchanged, the steel fiber reinforced concrete fire resistance can be increased 1.1 to 1.3 times. Since steel fiber reinforced concrete can prevent cracking, it is considered that fire resistance in the area is improved. In addition, little damage to the concrete cross-section proves that its load-bearing capacity is significantly increased.