沈阳高铁站房便线两侧基坑的支护方案对比

文章研究了新建沈阳南站站房内高铁便线两侧基坑开挖问题。建立了有限元开挖模型,模拟分层开挖、分层支护后的高铁轨道底部的变形,结合理正深基坑支护结构设计软件,采用数值模拟软件计算,从高铁轨道下方的沉降量、基坑的稳定性、施工难度、工期方面对2种基坑支护方案做比较,最终确定方案一为基坑支护方案,为今后类似工程的设计、施工等提供一些参考。

Comparison of support schemes of foundation ditch on either sides of temporary railway in building of the Shenyang high speed railway station

This paper deals with the problems of excavation of foundation ditches on either sides of temporary railway in the building of the Shenyang high speed railway station. The excavation model of the finite element is built to simulate bottom deformation of the rail after layered excavation and support. Combined with Lizheng software of structural design of deep foundation ditch support the numerical simulation software is used to make calculation. According to subsidence amount, stability of the excavation ditch, difficult degree of the operation and the duration two schemes are designed and compared. At last the first scheme is selected. The further similar project could refer to its design and operation.