| 摘要 |
The present invention relates to a method for constructing a gravity type two-column earth-retaining synthetic soil wall, wherein two lines of synthetic soil walls are provided on the poor soil having a deep depth for a support layer and a large earth pressure, such as costal dredging reclaimed land or the like, such that the width of the earth-retaining wall member is enlarged and the earth pressure is supported by their own weight. One preferred embodiment of the present invention comprises the following: (a) a step for assigning a ground surface and an excavation surface with respect to a reference line and constructing a first column wall, in which a plurality of soil cement walls (SCWs) made from H piles as core materials are provided in conjunction with each other, on the ground surface with respect to the reference line; (b) a step for constructing a second column wall, in which a plurality of soil cement walls (SCWs) made from H piles as core materials are provided in conjunction with each other, on the excavation surface with respect to the reference line so as to be parallel to the first column wall at a predetermined interval therefrom; (c) a step for jet-grouting a grout material between the first column wall and the second column wall, which are parallel to each other, and cutting and stirring the ground between the first column wall and the second column wall and simultaneously filling the grout material into a gap so as to harden the same; (d) a step for providing an upper cross beam to the upper end portions of the H piles so as to connect the upper end portions of the first column wall and the second column wall, forming a synthetic soil wall formed from the first column wall and the second column wall, where the grout material and the upper cross beam are placed so as to support the earth pressure by the weight of the synthetic soil wall; and (a) a step for excavating the excavation surface. |
