Study on Deformation Monitoring and Numerical Simulation of the Construction of Pipe Jacking Working Well Adjacent Retaining Wall
Municipal pipe jacking projects are important parts of national infrastructure construction.In order to en-sure the construction safety of pipe jacking working well adjacent to the retaining wall section,the construction of a same project in Chengdu was taken as an example.The monitoring data on the displacement of the pit and each point of the retaining wall were obtained on site,and then the displacement changes generated in the course of the con-struction of pipe jacking working well were analyzed.The result shows that the impact of pipe jacking working well on the overall stability of the retaining wall structure is relatively smaller,and its structural displacement variables are all within the allowable design.At the same time,a 3D model of the pipe jacking working well was established by Midas GTS NX to verify the influence of the pipe jacking working well construction on the soil around the pit,the well wall and the retaining wall.The result shows that the displacement results obtained by numerical simulation ba-sically matched with the monitoring data on-site,which indicates that the numerical simulation can simulate the ac-tual construction process.The study can provide reference for similar proximity projects.
pipe jacking working wellretaining walldeformation monitoringnumerical simulation
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