基于对Shao-Zhu-Su岩石力学流变模型及其数值算法的分析,发现传统积分算法在处理流变卷积方程时存在变量存储量大和计算效率低的缺点。运用数学变换和Taylor展开提出2种显式积分算法,即非线性显式积分算法(NEIA)和线性显式积分算法(LEIA)。通过蠕变和松弛数值试验对新算法进行验证和比较。提出的显式积分算法变量存储量较少,且避免与加载历史有关的累积求和运算,从而明显提高计算效率,使得此类内时流变模型更适合于大型岩体结构分析。需要指出的是,建议的数值积分方法也可用于其他积分型流变模型的数值处理。 Based on the analysis of the Shao-Zhu-Su rock mechanics rheological model and its numerical algorithm, it is found that the traditional integral algorithm has some disadvantages such as large memory capacity and low computational efficiency when dealing with the rheological convolution equation. Using mathematical transformation and Taylor expansion, two kinds of explicit integral algorithms are proposed, that is, the nonlinear explicit integral algorithm (NEIA) and the linear explicit integral algorithm (LEIA). The new algorithm is verified and compared by creep and relaxation numerical tests. The explicit integral algorithm proposed has less storage capacity and avoids the accumulative summation operation related to loading history, thus obviously increasing the computational efficiency, making such internal rheological model more suitable for large rock mass structure analysis. It should be pointed out that the proposed numerical integration method can also be used for the numerical processing of other integral rheological models.