摘要
基于深圳市某车站排水工程,结合现场施工方案及地质勘察数据,利用MIDAS/GTS有限元软件建立三维模型,并对其模拟结果进行数值分析。研究顶管工作井开挖及顶进过程的稳定性,总结了工作井受力以及地下连续墙变形的一般规律,模拟顶管工作井顶力施加对地下连续墙受力变形的影响。随着开挖深度的增大,工作井竖向位移和地下连续墙纵向位移也增大,工作井顶力施加同样产生受力变形,影响工作井的稳定性。结合现场实际监测数据对比分析,该模型基本符合顶管工作井开挖及顶进过程受力变形的特点。
Based on the drainage project of ShenZhen,combined with the site construction scheme and geological survey data,a three-dimensional model was established by using MIDAS/GTS finite element software,and the simulation results were analyzed numerically.The stability of excavation and jacking process of pipe jacking working well is studied,the general law of force of working well and deformation of underground diaphragm wall is summarized,and the influence of jacking force of pipe jacking working well on the force and deformation of underground diaphragm wall is simulated.With the increase of excavation depth,the vertical displacement of the working well and the longitudinal displacement of the underground diaphragm wall also increase,and the application of the top force of the working well also produces stress deformation,which affects the stability of the working well.By combining with the actual monitoring data of the field comparative analysis,the model basically accords with the characteristics of force and deformation during the excavation and jacking of pipe jacking working shaft.
作者
李大为
白蓉
马海彬
Li dawei;Bai rong;Ma haibing
出处
《滁州学院学报》
2022年第2期76-80,85,共6页
Journal of Chuzhou University
基金
中建四局五公司科技研发重点项目“管线综合成套施工技术研究”(CSCEC4b5-2020-YF-22)。
