某新建建筑对既有拱涵影响分析

Analysis of the influence of new building on existing arch culvert

城市建设中新建建筑与已有市政地下管线的冲突越来越多。拱涵结构处在填土中易受外部影响,结合具体工程实例,采用数值分析方法研究了新建建筑采用大直径桩跨越已有拱涵的结构体系对拱涵的影响程度。结果表明,在采用一定的施工措施情况下,基坑施工及建筑加载对拱涵结构的影响有限。目前项目已竣工,施工期间及施工后监测结果表明,沉降变形在规范允许范围内,拱涵正常运行。

More and more conflicts appeared between new buildings and existing municipal underground pipelines in urban construction. The structure of the arch culvert is easily affected by the outside. In this paper,based on a project example,numerical analysis method is used to study the influence of the large diameter pile on the existing arch culvert. The results show that the influence of foundation pit construction and building loading on arch structure is limited under certain construction measures. The project has been completed at present. Monitoring results during and after construction show that the settlement deformation is within the allowable range of the code and the arch culvert is in normal operation.