| 摘要 |
A temporary road foundation structure is provided to support an excavation hole for laying a PC culvert in the earth not to collapse, not to be interfered with a PC culvert and to prevent the flexural deformation of a wale by earth pressure. A temporary road foundation structure comprises a pair of earth retaining walls installed on two sides of an underground excavation hole(A) for laying a PC(precast concrete) culvert(S) to support the excavation hole and to cut off water, a wale(20) coupled to the inner circumferential surface of the earth retaining wall, many struts(30) installed to go across a space between the earth retaining walls to support the earth retaining walls, and a wale supporter(100) installed between the struts without interfering with the insertion of the PC culvert to prevent the flexural deformation of the wale and composed of first and second supports(110,120) mounted on the wale at regular intervals and connected to first and second hinge brackets(21,22) welded to one side of the wale by hinges(111,121) to be movable, a tension rod(130) supported to the first and second supports by making two ends pass through holes formed on the other end of the first and second supports and fastening with nuts(131,132) to prevent the swelling phenomenon of the wale between the first and second supports, and first and second anti-distortion rods(140,150) installed between the wale and the first, second supports to prevent the distortion of the first and second supports. |
