【摘要】：結(jié)合武漢地鐵3號(hào)線19標(biāo)段雙線隧道施工,利用數(shù)值模擬和現(xiàn)場(chǎng)測(cè)試的方法,研究盾構(gòu)施工過程中建筑物及地表沉降變形特征,并根據(jù)同一建筑物不同部位的沉降差判定施工過程中建筑物的安全性。研究結(jié)果表明:地表沉降在建筑物處明顯增大,建筑物所在位置及其周圍土體呈現(xiàn)整體傾斜變形;隧道橫向上建筑物長(zhǎng)寬比越大,地層滑移角及沉降槽寬度越大;建筑物和基礎(chǔ)的沉降變形與隧道施工動(dòng)態(tài)相關(guān),基礎(chǔ)的不均勻沉降導(dǎo)致建筑物安全性降低。由此可知,盾構(gòu)施工對(duì)上部建筑物的影響非常顯著,研究成果可為今后類似工程設(shè)計(jì)施工提供參考。
[Abstract]:Combined with the construction of double-track tunnel in No. 19 section of Wuhan Metro Line 3, the settlement and deformation characteristics of buildings and ground surface during shield tunneling construction are studied by numerical simulation and field test. According to the settlement difference of different parts of the same building, the safety of the building during construction is determined. The results show that the surface settlement increases obviously in the building, the position of the building and the soil around it are inclined deformation, the larger the aspect ratio of the tunnel is, the greater the slip angle and the width of the settlement trough are. The settlement and deformation of the building and foundation are related to the dynamic of tunnel construction, and the uneven settlement of the foundation leads to the decrease of the safety of the building. It can be seen that the shield construction has a significant influence on the upper building, and the research results can provide reference for the design and construction of similar engineering in the future.
【作者單位】： 武漢地鐵集團(tuán)有限公司;中國(guó)地質(zhì)大學(xué)(武漢)工程學(xué)院;廣州華路交通科技有限公司;
【分類號(hào)】：U455.43

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