本文關(guān)鍵詞：北京地鐵6號線淺埋暗挖法車站施工地表沉降規(guī)律研究　出處：《鐵道建筑》2014年04期 　論文類型：期刊論文

  更多相關(guān)文章： 地鐵車站 暗挖法 地表沉降 沉降槽 影響因素

【摘要】：對北京地鐵6號線淺埋暗挖法車站施工引起的地表沉降規(guī)律進行研究,通過其中10個車站的地表沉降監(jiān)測數(shù)據(jù),分析地表沉降與車站埋深、開挖面積等影響因素的相關(guān)關(guān)系。研究結(jié)果表明:車站埋深與地表沉降不成反比;開挖面積相近時,東四站及其以東的暗挖車站地表沉降值明顯大于其以西的暗挖車站;地表沉降區(qū)間頻率曲線服從正態(tài)分布,地表沉降-40~-60 mm出現(xiàn)的頻率最大;暗挖車站主體小導(dǎo)洞及樁柱體系、初支扣拱、二襯扣拱3個主要施工階段引起的地表沉降比值為38∶14∶5;沉降槽反彎點與隧道中線的距離為10~14 m,地層損失率為0.3%~0.7%。研究結(jié)論可為類似車站周邊環(huán)境風(fēng)險評估及北京規(guī)劃遠期地鐵線路起到指導(dǎo)作用。
[Abstract]:The relationship between the surface settlement and the surface subsidence caused by the construction of the shallow - buried underground excavation method in Beijing Metro Line 6 is studied . The results show that the surface settlement between the surface settlement and the surface settlement is not inversely proportional to the surface settlement . The results show that the surface settlement value of the underground station and the east of the tunnel is obviously larger than that of the underground excavation station in the west . The surface settlement ratio is between 10 and 14 m and the formation loss rate is 0.3 % 锝，

本文編號：1411938