[关键词]
[摘要]
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。
[Key word]
[Abstract]
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.
[中图分类号]
TU473. 2
[基金项目]
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,说明选则正确的计算方法事关结构的安全与经济,非常重要。