砂卵石地层平行顶管沉降研究  

Study on Settlement of Parallel Pipe Jacking in Sandy Cobble Strata

作　　者：胡志能 杨潇航 贾韵涵 Hu Zhineng;Yang Xiaohang;Jia Yunhan(Department of Urban Construction,Beijing University of Technology,Beijing 100124,China;China Construction Third Engineering,Beijing 100097,China)

机构地区：[1]北京工业大学城市建设学部,北京100124 [2]中建三局集团有限公司,北京100097

出　　处：《市政技术》2023年第7期139-143,共5页Journal of Municipal Technology

摘　　要：顶管作为三大非开挖技术之一,显然对地面交通和周围建筑干扰小,但依然会扰动土体。因此以北京市石景山首钢园区顶管工程为背景,考虑了顶管间横向扰动的影响范围,分析了顶管顶进对土体的影响和地层损失,采用叠加后的沉降计算公式,并利用有限元软件计算了在先行管影响下的后行管沉降量。研究结果表明,后行管会受到先行管的扰动,但在管道间距较大的情况下影响较小。As one of the three trenchless technologies,pipe jacking will disturb soil even if it has little disturbance to ground traffic and surrounding buildings.Therefore,based on the pipe jacking project in Shougang Park of Shijingshan District in Beijing,the influence range of lateral disturbance of pipe jacking is considered.The influence of pipe jacking on the soil and the stratum loss are analyzed.Under the influence of the first-run pip,the superimposed settlement calculation formula and the finite element software are adopted to calculate the settlement value of the back-run pipe.The results show that the trailing pipe will be disturbed by the leading pipe,but the influence will be smaller when the pipe spacing is large.

关 键 词：顶管 砂砾石地层 顶进影响 沉降变形 

分 类 号：TU990.3[建筑科学—市政工程]