介绍地铁结构计算常用的计算假定,结合地铁常见工法论述总量法与增量法各自的适用范围、计算简图以及适用的计算软件.逆作施工的车站必须选用增量法计算,顺作施工的车站基坑开挖的过程可采用总量法计算,内衬回筑阶段则应选择增量法计算.最后以合肥轨道交通1号线大东门站为例,详述增量法的计算过程,并将计算结果与总量法计算结果对比,说明选择正确的计算方法事关结构的安全与经济,非常重要.%The author introduces the commonly used computation assumptions in subway structural stress analysis. Considering the routine construction method of subway, he introduces " total displacement method" and " increment method", the applicable range of the respective computation models as well as the application of computation softwares. For a top - down excavated station the " incremental method" should be adopted. For a normally constructed station foundation pit the " total displacement method" should be used. For lining fabrication one should choose the "incremental method". Taking Hefei metro Line 1 Dadongmen station as an example, the author introduces the " incremental method" calculation process, and compares the calculated result with those obtained by " total displacement method". Comparison results show that selecting a correct calculation method is concerned with the structural safety and economy.
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