| 摘要 |
A retaining wall method for a removal and non-removal type cut-off diaphragm wall using a PC strand is provided to improve bearing capacity of a cut-off diaphragm wall by installing a PC strand into a steel pipe pile placed in a construction site, to offer a support beam suitable for the excavated ground in a construction site by reinforcing the inside of a cut-off diaphragm wall with a PC strand and to reinforce the structure of a cut-off diaphragm wall, to increase durability of a structure, and to solve an environmental problem by removing a strand installed under the ground. A retaining wall method for a removal and non-removal type cut-off diaphragm wall using a PC strand comprises the steps of: installing a cut-off diaphragm wall for ground excavation of a construction site(A) by perforating the ground for installing a cut-off diaphragm wall, inserting a steel pipe to the perforated ground, inserting a PC strand to the inside of the steel pipe and installing an anchor body to be fastened with the PC strand, applying tensile force and installing a load cell, grouting a hollow and covering a head with cap concrete; reinforcing the cut-off diaphragm wall to improve bearing capacity using earth pressure added to the installed cut-off diaphragm wall(B) by tensing the PC strand and providing stiffness, and then fixing the PC strand; and injecting PE(polyethylene) for reinforcement between a steel pipe and a steel pipe(C) by installing a PE water stop reinforcement body formed by injecting PE to the outside of a cut-off diaphragm wall provided with the steel pipe between the steel pipe and the steel pipe to prevent the inflow of soil particle to an installation space of a building. |
