US 12,421,671 B2
In-situ reconstruction and extension structure of embankment and construction method thereof
Xiang Qiu, Changsha (CN); Siqi Fan, Changsha (CN); Jiyuan Zhu, Changsha (CN); Xiaoming Fan, Changsha (CN); and Jinhong Li, Changsha (CN)
Assigned to Changsha University of Science and Technology, Changsha (CN)
Filed by Changsha University of Science and Technology, Changsha (CN)
Filed on Sep. 25, 2023, as Appl. No. 18/372,420.
Claims priority of application No. 202310434980.5 (CN), filed on Apr. 21, 2023.
Prior Publication US 2024/0352682 A1, Oct. 24, 2024
Int. Cl. E02D 17/00 (2006.01); E01C 3/04 (2006.01); E01C 3/06 (2006.01); E02D 11/00 (2006.01); E02D 17/18 (2006.01); E02D 17/20 (2006.01)
CPC E01C 3/04 (2013.01) [E01C 3/06 (2013.01); E02D 11/00 (2013.01); E02D 17/18 (2013.01); E02D 17/207 (2013.01); E02D 2300/0032 (2013.01); E02D 2300/0037 (2013.01); E02D 2300/0079 (2013.01); E02D 2300/0085 (2013.01); E02D 2600/30 (2013.01); E02D 2600/40 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An in-situ reconstruction and extension structure of an embankment, comprising:
a stepped slope, wherein the stepped slope is formed by excavation on an existing side slope, a gradient of the stepped slope is the same as a gradient of an extension side slope, the stepped slope is intersected with each of a top plane and a bottom plane of the existing side slope; and
a toe of the existing side slope is taken as a toe of the extension side slope, and the gradient of the extension side slope is determined according to a position of the toe and an expanded width of the extension side slope;
wherein an outer side of the stepped slope is filled with a geogrid reinforcement layer in a layered manner, and a slope protection structure is arranged on an outer side of the geogrid reinforcement layer to form the extension side slope; and
wherein a drainage system is arranged at a bottom of the extension side slope and configured for draining water seepage inside in-situ reconstruction and extension structure of an embankment,
wherein excavation of the stepped slope starts from the toe of the existing side slope and extends towards an inner side of the embankment to divide the embankment into a plurality of sub-level construction areas; and
before the excavation of the stepped slope, a top of a tail end of each of the plurality of sub-level construction areas has steel sheet piles punched therein and slip-casting pipes are prefabricated at a corner of the steel sheet piles.