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中文摘要：
混凝土保护层的厚度会直接影响构件的破坏形态、承载力、刚度以及耐久性能等．结合型钢高强混凝土柱的剪切黏结破坏特征，以混凝土保护层为对象，根据板弹塑性稳定理论和力扩散原理分别对其受压屈曲失稳和临界开裂时的最小保护层厚度进行理论推导，提出合理的计算公式，计算结果与已有试验结果相吻合．结合工程实际，混凝土保护层厚度还应满足我国现行《混凝土结构设计规范》（GB 50010-2010）中最小保护层厚度的构造要求，并建议型钢高强混凝土构件的最小配箍率宜取0.3%．
英文摘要：
Thickness of the concrete cover has direct impact on the failure pattern, bearing capacity, rigidity and durability of the concrete members. Shear bond failure of steel reinforced high-strength concrete columns is analyzed in this paper. The concrete cover thickness calculation formulas of concrete compressive buckling and critical cracking are derived by using plate elastic-plastic theory and force diffusion principle. The calculated result of concrete cover thickness agrees with the test result. In application, the concrete cover thickness should meet the structural requirement of minimum concrete cover thickness in accordance with Code for Design of Concrete Structures of China. Besides, it is suggested that the stirrup ratio of steel reinforced high-strength concrete members be greater than or equal to 0.3%.
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