Site Experimental Analysis of Pipe Jacking Project

摘要

This paper describes the results of field monitoring of pipe jacking undertaken in the Pipe Jacking Construction Project along Shiqiao Road in Hangzhou, China. A segment is chosen where the disturbance of soil is great and involves a pipe jack in silty soil by earth pressure balance machine (EPBM). The field-testing includes surface deformations; sub-surface movements, earth pressures, pore water pressures and underground water levels on the location. In addition, the total jacking forces and earth pressures in EPBM are also recorded. These measured data are used to study the disturbance and movement of soil during the course of pipe jacking. The results of these tests indicate the values of surface deformations, sub-surface movements, earth pressures, pore water pressures and underground water levels are related to the distance between shield and testing section.