混凝土管片内力分布的解析和数值模型比较研究

Analytical and numerical models comparison of internal force distribution in concrete segments

为探究混凝土管片内力的分布特点,以北京地铁10号线盾构隧道为例,分别利用惯用法和有限元方法对管片内力进行计算,并且对两种方法的管片内力分布比较分析。研究结果表明,两种方法得到内力在各截面的变化趋势基本相同,相同截面内力值有一定差异,不同管片内力的模型直接影响着管片内力计算的精度。

In order to study the internal force distribution characteristics of concrete segments, taking the shield of Beijing subway line 10 as anexample, the finite element method and routine method were used to the internal force calculation respectively, and internal force distribution ofthe segments with two methods was compared and analyzed. The study results show that the variation trend of internal forces with the two methodsin all sections is basically the same, and the internal force values of the same section have certain differences, and internal force models of differentsegments directly affect the accuracy of segments internal force calculation.