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首页> 外文期刊>Geomatics,Natural Hazards & Risk >Monitoring analysis of influence of extra-large complex deep foundation pit on adjacent environment: a case study of Zhengzhou City, China
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Monitoring analysis of influence of extra-large complex deep foundation pit on adjacent environment: a case study of Zhengzhou City, China

机译：超大型复杂深基坑对邻近环境影响的监测分析 - 以郑州市为例

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摘要

Extra-large complex deep foundation pit excavation has an impact on the surrounding environment. The deformation characteristics of deep foundation pits were investigated during excavation, according to the temporal and spatial variations in displacement, using long-term on-site displacement monitoring. The results show that the deformation characteristics of the supporting structure and surrounding buildings can be divided into four stages: earth excavation, cushion construction, internal support removal and cushion completion. In the stages of earthwork excavation and support removal, the settlement deformation of the supporting pile roof, lattice column and adjacent ground is large, and cushion construction has a weakening effect on foundation pit deformation. In the stages of earthwork excavation, cushion construction and internal support removal, the nonuniform settlement between adjacent lattice columns increases the lattice column deformation, and the deformation of the foundation pit tends to be stable after the completion of the internal support. The foundation pit excavation mainly affects the settlement deformation of the adjacent pipe gallery, and its deformation increases rapidly in the early stage of earthwork excavation. Moreover, the influence degree of foundation pit excavation on the surrounding environment decreases with increasing distance from the excavation area.
机译：超大型复杂的深基坑挖掘机对周围环境产生了影响。根据位移的时间和空间变化，在开挖期间研究了深基坑凹坑的变形特性，使用长期现场位移监测。结果表明，支撑结构和周围建筑物的变形特性可分为四个阶段：地球挖掘，垫子结构，内部支撑拆除和垫子完成。在土方工程挖掘和支撑拆卸的阶段，支撑桩屋顶，晶格柱和相邻地的沉降变形大，垫垫结构对基础坑变形的影响疲软。在土方挖掘的阶段，缓冲结构和内部支撑去除，相邻晶格柱之间的非均匀沉降增加了晶格柱变形，并且基础坑的变形趋于在内部支撑件完成后稳定。基础坑挖掘主要影响相邻管道廊的沉降变形，在土方工程挖掘的早期阶段的变形迅速增加。此外，基础凹坑挖掘对周围环境的影响程度随着距离挖掘区域的距离增加而降低。

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