综合管廊顶管施工地表竖向变形及土体扰动机理研究

Study on Vertical Surface Deformation and Soil Disturbance Mechanism of Pipe Jacking Construction

现代化城市地下空间发展迅速,绿色建造要求越来越高,顶管施工得到普遍应用的同时其理论研究相对滞后,从而导致应对不同施工环境选取合理的施工参数能力不足。文中以综合管廊工程为研究背景,提出了顶管顶进施工过程中新的土体扰动分区,并对扰动机理进行了研究,结合试验段不同施工参数下地层竖向变形监测数据,研究其对地表沉降的影响规律,为指导类似施工环境、达到绿色施工具有良好的理论指导意义。

With the rapid development of modern urban underground space and the widespread application of pipe jacking,Green building is becoming more demanding,its theoretical research lags behind,which leads to the lack of ability to select reasonable construction parameters in response to different construction environments.Based on a specific municipal pipeline project as the research background,this paper proposes a new soil disturbance zone in the process of pipe jacking construction,and studies the disturbance mechanism.Combined with the vertical deformation monitoring data of the stratum under different construction parameters of the test section,this paper studies the law of its influence on the surface settlement.The results has good theoretical significance for guiding similar construction environment.