顶管穿越下凹式立交桥区道路及挡墙变形控制技术

ROAD AND RETAINING WALL DEFORMATION CONTROL TECHNIQUE FOR PIPE JACKING PASSING THROUGH CONCAVE-DOWN OVERPASS AREA

北京土城北桥区积水治理工程D1400 mm进出水管线施工中,采取顶前预加固,控制顶进速度、出土量、泥水仓压力等技术措施,并根据监测信息及时调整顶管施工,形成动态管理,将变形量控制在允许范围内。

During D1400mm water supply and drainage pipeline construction of Beijing Tucheng Beiqiao District water accumulation treatment project, various technical measures were adopted, such as pre-strengthening before jacking, jacking speed control, earth excavation quantity, slurry chamber pressure, etc. Pipe jacking construction was adjusted timely according to practical monitoring information, to realize dynamic management and to control the deformation within the allowable range.