李 围, 何 川, 陈晓婷. 配合盾构法建成三连拱地铁车站模型试验研究[J]. 工程力学, 2010, 27(增刊Ⅱ): 245-248.
引用本文: 李 围, 何 川, 陈晓婷. 配合盾构法建成三连拱地铁车站模型试验研究[J]. 工程力学, 2010, 27(增刊Ⅱ): 245-248.
LI Wei, HE Chuan. MODEL TEST OF THREE-BORE METRO STATION CONSTRUCTED WITH THE METHOD OF EXPANDING SECTIONAL SHIELD TUNNELS[J]. Engineering Mechanics, 2010, 27(增刊Ⅱ): 245-248.
Citation: LI Wei, HE Chuan. MODEL TEST OF THREE-BORE METRO STATION CONSTRUCTED WITH THE METHOD OF EXPANDING SECTIONAL SHIELD TUNNELS[J]. Engineering Mechanics, 2010, 27(增刊Ⅱ): 245-248.

配合盾构法建成三连拱地铁车站模型试验研究

MODEL TEST OF THREE-BORE METRO STATION CONSTRUCTED WITH THE METHOD OF EXPANDING SECTIONAL SHIELD TUNNELS

  • 摘要: 采用相似模型试验,进行了在盾构隧道基础上扩挖建成三连拱隧道地铁车站的施工方案研究。结果表明,采用预留核心土台阶法扩挖建成两连拱隧道地铁车站的施工方案是可行的,但需采用双排小导管注浆超前加固,达到其加固效果后,才能进行土体开挖。施工完成后地层竖向位移场呈“U型”分布,不加固条件下,地表和地中位移很大。地表沉降曲线为近似正态分布,施工完成后其沉降槽宽度为3B,B为三连拱结构的总宽度。

     

    Abstract: The construction scheme of the metro station was studied through similar model tests. The metro station is a three-bore structure constructed using the panding method based on shield tunnels. Results show that the construction scheme of the metro station is feasible. But it is necessary to reinforce the surrounding rock of the vault of tunnel arches during the expanding construction. The vertical displacement of the surrounding rock displays a “U” shape distribution after the expanding construction. The displacement of surrounding rock increases if the surrounding rock of the vault of tunnel arches is not reinforced. The settlement curve of the ground surface is approximately normally distributed, and the influencing breadth is 3B, where B is the breadth of the three-bore structure.

     

/

返回文章
返回