摘要:
A system and method are provided for increasing the width of an existing roadway. The system incorporates a reverse-oriented retaining wall and soil nail supports. The retaining wall is formed by a first set of soil nails, wire mesh material, and one or more geotextile material layers. An alternate embodiment forms the retaining wall with a plurality of concrete blocks stacked and spaced to form a block wall. The blocks are mounted over the first set of nails and can be filled with mortar. Backfill material fills a gap between the existing sloping surface and the retaining wall. A second set of soil nails can be provided for additional subsurface support. An upper surface of the backfill material can be paved to form the extended roadway width. The cantilevered configuration of the reverse-oriented retaining wall provides a solution for a less costly retaining wall structure. This reverse-oriented retaining wall is also easier to install than traditional vertical retaining walls that may have to be installed at greater vertical and lateral distances from the existing roadway.
摘要:
A system and method are provided for increasing the width of an existing roadway. The system incorporates a reverse-oriented retaining wall and soil nail supports. The retaining wall is formed by a first set of soil nails, wire mesh material, and one or more geotextile material layers. An alternate embodiment forms the retaining wall with a plurality of concrete blocks stacked and spaced to form a block wall. The blocks are mounted over the first set of nails and can be filled with mortar. Backfill material fills a gap between the existing sloping surface and the retaining wall. A second set of soil nails can be provided for additional subsurface support. An upper surface of the backfill material can be paved to form the extended roadway width. The cantilevered configuration of the reverse-oriented retaining wall provides a solution for a less costly retaining wall structure. This reverse-oriented retaining wall is also easier to install than traditional vertical retaining walls that may have to be installed at greater vertical and lateral distances from the existing roadway.
摘要:
A coupler interconnects adjacent sections of soil nail members to extend a length for a soil nail to be installed. The coupler includes a plurality of projections extending from the exterior surface of the coupler. The projections serve multiple purposes. One purpose is to center the soil nail within a drilled hole. Another purpose is to provide mixing for selected amounts of drilled material to remain within the hole, and/or evacuation of drilled material to be removed from the hole. Another purpose is to create a drilled hole with varying diameters in response to different geological layers encountered during drilling. The coupler with projections therefore serves as a secondary drill bit implement. The size of the projections can be altered to selectively enlarge a desired portion of a drilled hole. The invention further includes a soil nail assembly and a method for installing a soil nail assembly including couplers with projections.