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指出了用现有裂缝理论计算钢衬钢筋混凝土压力管道裂缝宽度的局限性 进一步完善了“外部管壁”的力学模型 ,并据此导出了精确度更高的半理论半经验公式 ,该公式考虑了混凝土保护层内外的裂缝宽度差异 最后给出了算例
It is pointed out that the limitation of the crack width of steel liner concrete pressure pipe by using the existing fracture theory further improves the mechanical model of “external pipe wall” and deduces the semi-theoretical semi-empirical formula with higher accuracy. This formula considers the The difference of crack width inside and outside concrete cover is given finally