大直徑盾構(gòu)隧道施工對(duì)大堤的影響分析

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摘  要：該文對(duì)杭州艮山東路過(guò)江隧道施工引起的大堤地表沉降實(shí)測(cè)數(shù)據(jù)進(jìn)行分析。結(jié)果表明，在盾構(gòu)通過(guò)時(shí)和盾構(gòu)通過(guò)后這2個(gè)階段，沉降值所占總沉降的比值較大，分別為44.5%和25.5%。盾構(gòu)隧道施工對(duì)大堤沉降的影響范圍為2.3D（D為隧道直徑14.5 m）。

關(guān)鍵詞：盾構(gòu)；過(guò)江隧道；地表沉降；大堤；Peck曲線

中圖分類號(hào)：TU433      文獻(xiàn)標(biāo)志碼：A          文章編號(hào)：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

隨著城市對(duì)交通需求量的增加，過(guò)江隧道的修建越來(lái)越多，結(jié)構(gòu)外徑也越來(lái)越大，現(xiàn)多采用泥水式盾構(gòu)法修建超大直徑隧道，例如杭州錢江隧道[1]。（剩余3353字）