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目的:活性瓷釉涂层能够显著增强钢筋的防腐蚀能力,同时能够明显提升钢筋与混凝土的粘结力。通过对活性瓷釉涂层钢筋混凝土防护墙在冲击荷载作用下的破坏特征进行试验和数值模拟,为活性瓷釉涂层技术在钢筋混凝土结构中的应用提供理论基础。创新点:1.对活性瓷釉涂层钢筋混凝土防护墙进行爆炸荷载作用下的破坏试验;2.通过数值模拟,探究活性瓷釉钢纤维对钢筋混凝土结构抗爆能力的影响,为结构设计提出建议。方法1.通过对活性瓷釉涂层钢筋防护墙进行爆炸试验(图2),揭示活性瓷釉涂层钢筋混凝土结构的动力破坏特征(图4和5);2.通过数值方法研究活性瓷釉涂层对钢筋混凝土防护墙抗爆性能的影响,揭示在不同钢筋-混凝土粘结强度时钢筋混凝土结构整体性的变化规律(图10、13和15);3.在爆炸试验和数值分析基础上,提出活性瓷釉涂层钢筋混凝土结构抗爆设计建议(图16)。结论:1.活性瓷釉涂层能够显著改善钢筋在混凝土结构中的传力性能;在爆炸荷载作用下,涂层钢筋混凝土结构的破坏程度明显减轻。2.活性瓷釉涂层能够显著改善钢筋混凝土结构的变形特性,并显著增强其耗能能力。3.在采用活性瓷釉涂层进行抗爆设计时,采用直径较小的钢筋可提高结构的吸能能力。
Objective: Activated enamel coating can significantly enhance the corrosion resistance of steel bars, and at the same time, it can obviously improve the bond between steel bar and concrete. Through the experiment and numerical simulation of the failure characteristics of the active enamel coating reinforced concrete protective wall under the impact load, the theoretical basis is provided for the application of the active enamel coating technology in the reinforced concrete structure. Innovative points: 1. Damage test of activated enamel coated reinforced concrete retaining wall under explosive load; 2. Through the numerical simulation, to explore the influence of active enamel steel fiber on the antiknock capability of reinforced concrete structure, and to put forward suggestions for structural design. Method 1. Explosion test of active enamel coated steel bar (Figure 2) reveals the dynamic failure characteristics of the active enamel coated reinforced concrete structure (Figures 4 and 5) .2. Studied the effect of active enamel coating Reinforced concrete protective wall antiknocking performance, reveals the different steel-concrete bond strength of the integrity of reinforced concrete structures (Figure 10, 13 and 15); 3. Explosion test and numerical analysis based on the proposed activity Porcelain enamel coated reinforced concrete structure antiknock design recommendations (Figure 16). Conclusions: 1. Activated enamel coating can significantly improve the transmission performance of reinforced concrete in concrete structures; Under the action of blast load, the damage degree of coated reinforced concrete structures is obviously reduced. 2. Activated enamel coating can significantly improve the deformation characteristics of reinforced concrete structures, and significantly enhance its energy dissipation capacity. 3. In the use of active enamel coating antiknock design, the use of smaller diameter steel can enhance the structure’s energy absorption capacity.