本文關(guān)鍵詞： 雙線平行盾構(gòu)隧道 統(tǒng)一解 地面沉降　出處：《現(xiàn)代隧道技術(shù)》2017年02期 　論文類型：期刊論文

【摘要】：文章提出盾構(gòu)法隧道統(tǒng)一土體移動(dòng)模型二維解的修正公式,并利用該公式計(jì)算近距離條件下雙線平行盾構(gòu)施工產(chǎn)生的總的地面沉降。該方法適用于雙線隧道近距離工況,采用近距離界定系數(shù)C=L/(h+R)≤0.66作為本文公式適用條件,當(dāng)C0.66時(shí)本文公式不再適用;當(dāng)C≤0.66時(shí),沉降曲線呈"V"形;當(dāng)0.66C≤0.79時(shí),沉降曲線呈"V-W"形;當(dāng)C0.79時(shí),沉降曲線呈"W"形。算例分析結(jié)果表明:當(dāng)C≤0.66時(shí),本文方法計(jì)算得到的地面沉降值與實(shí)測(cè)值非常吻合;近距離雙線平行盾構(gòu)施工引起的地面沉降曲線符合正態(tài)分布規(guī)律,但最大沉降值有時(shí)會(huì)偏離中軸線。
[Abstract]:In this paper, a modified formula for the two-dimensional solution of the unified soil movement model of shield tunneling is presented. The total ground subsidence caused by the parallel shield tunneling with two lines is calculated by using this formula. The method is suitable for the short distance working condition of the double line tunnel. In this paper, the close-range defining coefficient (C _ (L) / r _ (r)) 鈮，

本文編號(hào)：1472842