浅埋暗挖法对地表建筑物的影响研究

发布时间：2018-06-28 04:10

本文选题：地铁隧道 + 浅埋暗挖法　；参考：《建筑技术》2017年11期

【摘要】：为研究浅埋暗挖法地铁隧道施工对地面密集建筑物的影响规律,对地铁施工工程某区段建筑物沉降进行实地观测,并运用三维显式有限差分软件FLAC3D,建立地铁隧道和城市建筑物的数值模型,对比分析典型施工过程对建筑物沉降的影响,发现建筑物沉降规律的数值模拟结果与观测数据基本相符;沉降倾斜变形低于允许值,满足要求;建筑物距离隧道轴线越近倾斜及不均匀沉降越严重,且沉降值随荷载增大而增加,施工工艺水平、基础形式、结构形式及地质水文的差异性对不均匀沉降的影响,建议该工程应用沉降规律分析在数值模拟结果的基础上乘以1.2~1.3的系数。
[Abstract]:In order to study the influence of shallow underground tunneling on ground dense buildings, the settlement of buildings in a section of subway construction project was observed on the spot. The numerical model of subway tunnel and urban building is established by using 3D explicit finite difference software FLAC3D. the influence of typical construction process on building settlement is compared and analyzed. It is found that the numerical simulation results of the building settlement law are basically consistent with the observed data; the inclined settlement deformation is lower than the allowable value, which meets the requirements; the closer the building is to the tunnel axis, the more serious the inclination and uneven settlement are. And the settlement value increases with the increase of load. The influence of construction technology level, foundation form, structure form and geological and hydrological difference on the uneven settlement is discussed. It is suggested that the analysis of settlement law be based on the results of numerical simulation and multiply by the coefficient of 1.2n 1.3.
【作者单位】：郑州升达经贸管理学院;黄河交通学院;河南省建筑科学研究院有限公司;
【基金】：河南省教育厅科学技术研究重点项目(14B880018)
【分类号】：TU433;U231.3;U456.3

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