相邻多基坑开挖对周边环境的沉降影响研究

A Study on the Settlement Impact of Adjacent Excavation of Multiple Foundation Pits on the Surrounding Environment

文中以某产业园区基坑项目A和项目B为例,探讨了相邻多基坑开挖对周边环境沉降的影响。数据监测点发现,相邻基坑开挖阶段,沉降与基坑距离产生关联。在空间维度方面,不同监测点的沉降曲线呈现多样趋势,且存在叠加效应。A基坑采用混凝土灌注桩体系,整体稳定性高于B基坑,其竖向位移表现出周期性变化。相邻多基坑共同影响导致沉降,交界处的阳角沉降更为显著。

This study takes A and B foundation pits in a certain industrial park as a case study to explore the impact of adjacent excavation of multiple foundation pits on the settlement of the surrounding environment.Through data from monitoring points,it was found that adjacent excavation stages have a correlation between settlement and distance from the foundation pit.The settlement curves of different monitoring points in terms of spatial dimensions show diverse trends and there are overlapping effects.A foundation pit adopts a concrete cast-in-place pile system,with overall stability higher than B foundation pit,and its vertical displacement shows periodic changes.The joint influence of multiple adjacent foundation pits leads to settlement,especially at the external corners at the junction.