Research On Construction Technology Of Shield Through Existing Building Of Huang He Road Station To Zi Jing Shan Road Station Of Zhengzhou Metro

This thesis is mainly according to Zhengzhou subway construction project, the study on the river deposition silt silty sand stratum, shield subway tunneling under existing structures during construction may lead to ground subsidence, under the shield tunnel wear existing building construction risk and ground settlement control technology to carry on the analysis, and on the basis of summing up the engineering settlement rules.Firstly, this paper introduces the principle of shield tunneling, the tunneling mode and the disturbance of the earth disturbance.. This paper mainly expounds the mechanism of shield construction to surface subsidence, including the ground subsidence, the development of ground subsidence, and the theoretical study of the control datum of surface subsidence. Finally, the function of ABAQUS is introduced;Followed by the establishment simulation model, calculated the shield to the position of the buildings and the tunnel four conditions, through the analysis of the distance from tunnel central line distance of sedimentation value under the condition of the buildings on the formation of the influence of subsidence situation analysis.Finally the construction tunnel originating process, tunneling technology,segment installation technology, the dregs of improved technology, waterproof construction technology, grouting filling slurry and shield arrival technology are described. And the construction control object of this project is summarized...