期刊论文

Li, Y.-S.(liyongsuo@126.com)

中文

岩土力学

1000-7598

2011

32

12

3701-3707

10.3969/j.issn.1000-7598.2011.12.027

国家自然科学基金项目（No.50978036） 中国建筑股份有限公司科研项目（No.CSCEC-2009-Z-19） 湖南省自然科学基金资助项目（No.11JJ4031） 湖南省教育厅一般研究项目（No.11C0246）

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沈阳地铁2号线某暗挖车站是国内首个采用管幕预筑法施工的地下工程,对该工法施工引起的地面沉降进行了监测,并建立了修正的Peck模型对沉降进行预测,结果表明:（1）管幕预筑隧道施工引起的地表沉降预测值与实测值基本吻合;（2）管幕预筑浅埋大断面隧道施工地表沉降表现为整体下沉特点,沉降值与地下结构基础的沉降值基本相等,控制管幕预筑隧道结构的墙脚下沉可以有效控制地表的沉降;（3）管幕预筑法隧道施工预先施作的地下永久结构对隧道围岩的约束作用明显,砂土地层中地层损失率为0.000 5%～0.002 0%,沉降槽宽度系数为0.5;（4）管幕预筑法建造地下空间,引起的地表沉降较常规施工方法小得多,环境效...

Underground station of Shenyang Metro line 2 is the first underground engineering built by pipe-roof pre-construction method (PPM). The surface subsidence caused by the construction was monitored; and revised Peck model was developed to predict the subsidence. Some conclusions are drawn as follows. (1) The predicted result is consistent well with the monitoring data. (2) Surface subsidence caused by tunnel construction with PPM is characterized by the whole subsidence; and the subsidence value is pretty equal to the one of underground structure foundation, and it is effective to control surfac...