大直径盾构隧道施工对大堤的影响分析

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摘  要：该文对杭州艮山东路过江隧道施工引起的大堤地表沉降实测数据进行分析。结果表明，在盾构通过时和盾构通过后这2个阶段，沉降值所占总沉降的比值较大，分别为44.5%和25.5%。盾构隧道施工对大堤沉降的影响范围为2.3D（D为隧道直径14.5 m）。

关键词：盾构；过江隧道；地表沉降；大堤；Peck曲线

中图分类号：TU433      文献标志码：A          文章编号：2095-2945（2023）24-0121-04

Abstract： This paper analyzes the measured data of the surface settlement of the embankment caused by the construction of the river-crossing tunnel on the east road of Genshan in Hangzhou. The results show that in the two stages of shield passing and after shield passing， the ratio of settlement value to total settlement is 44.5% and 25.5% respectively. The influence range of shield tunnel construction on embankment settlement is 2.3D （D stands for tunnel diameter 14.5 m）.

Keywords： shield; river-crossing tunnel; surface subsidence; levee; Peck curve

随着城市对交通需求量的增加，过江隧道的修建越来越多，结构外径也越来越大，现多采用泥水式盾构法修建超大直径隧道，例如杭州钱江隧道[1]。（剩余3353字）