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用有限元法进行钢筋混凝土结构徐变分析时，必须应用徐变应变增量方程。采用积分中值定理从理论上更深入地探讨徐变应变增量方程的几种表达式，指出了现有文献中存在的问题，得出了正确的公式。
When creep analysis of reinforced concrete structures is performed using the finite element method, a creep strain increment equation must be applied. The integral mean value theorem is used to theoretically explore several expressions of the creep strain increment equation. The existing problems in the existing literature are pointed out and the correct formula is obtained.