One example embodiment includes a steel and foam foundation. The steel and foam foundation includes a main body, where the main body is formed of EPS foam and a sloped exterior. The sloped exterior is formed of EPS foam on an exterior surface of the main body and ensures that the bottom of the steel and foam foundation is wider than the top of the steel and foam foundation. The steel and foam foundation also includes a first I-beam and a second I-beam. The first and second I-beams are placed on opposite edges of the main body. The steel and foam foundation further includes a first piece of L-metal, a second piece of L-metal, a third piece of L-metal, and a fourth piece of L-metal. Each piece of L-metal includes a first flange and a second flange and is placed around the remaining edges of the main body.

An in-situ reconstruction and extension structure of an embankment and a construction method thereof are provided. The structure includes a stepped slope excavated on an existing side slope. A gradient of the stepped slope is the same as that of an extension side slope, the stepped slope is individually intersected with top and bottom planes of existing side slope; a toe of existing side slope is taken as a toe of the extension side slope, and gradient of the extension side slope is determined according to positions of the toe and an expanded width. An outer side of stepped slope is filled with a geogrid reinforcement layer in a layered manner, a slope protection structure is arranged on an outer side of the geogrid reinforcement layer to form extension equivalent side slope; a drainage system is arranged at a bottom of the extension side slope.

A metal fin tube foundation includes a pair of coupled metal plates, each plate being comprised of a plurality of flat panels, wherein each panel is positioned at an angle relative to an adjacent panel, and each plate including a fin on each lateral end of each plate, wherein each fin overlaps a fin of the other metal plate forming two pairs of overlapped fins, wherein the plates are coupled along each of the two pairs of overlapped fins; wherein the plurality of panels of the coupled two metal plates form a closed perimeter polygon shape having an open interior and wherein each pair of overlapped fins form a combined fin element which extends away from the perimeter of the polygon.

The open end friction pile comprises of four steel plates, four brackets, and one driving head. The steel plates have a first bend line and a second bend line that are equidistant from a distal end. The first bend line and second bend line of the steel plates are equidistant from each other creating a center portion. The brackets have a first bend line and a second bend line that are equidistant from a distal end. The first bend line and second bend line of the brackets are equidistant from each other creating a center portion. The bracket has a third bend line along the center portion. One bracket is connected to one steel plate along the distal ends and center portion. All four steel plates and four brackets concurrently connect along the distal ends to form two open-ends. A driving head is connected covering the top open-end.

A manufacturing method of a concrete pile is shown. The method includes the following, that is, pouring concrete in the pile molding space, reducing the pile molding space to compress and mold the concrete, draining water drained from the concrete by compression and molding outside of the formwork from the drainage hole, and holding the concrete a predetermined amount of time to harden the concrete. The formwork includes an outer formwork that molds an outer wall surface of the concrete pile, an inner formwork that molds an inner wall surface of a hollow space of the concrete pile, and a pair of end formwork that mold upper and lower end surfaces of the concrete pile. The drainage hole is a gap between adjacent components when the mold is tightened, and the gap is configured to be capable of being opened larger during cleaning than when the mold is tightened.

A wooden connection structure for seismic resistance in pile foundations includes a base, a supporting pile and four seismic isolation frames; the base is provided with a central groove and a rectangular groove; the supporting pile includes a connecting column, a supporting disc and a central square column; the seismic isolation frame includes a wooden frame and a guide circular tube, the wooden frame is a mortise-and-tenon joint structure; the four seismic isolation frames are respectively sleeved in four rectangular grooves; a lower part of the central square column is sleeved in the square groove, four side facades of the central square column are in contact with side facades of the four seismic isolation frames respectively; and lower parts of the four guide cylinders are respectively sleeved in four guide circular tubes. The wooden connection structure allows for the comprehensive absorption and dispersion of seismic wave energy.

An in-situ reconstruction and extension structure of an embankment and a construction method thereof are provided. The structure includes a stepped slope excavated on an existing side slope. A gradient of the stepped slope is the same as that of an extension side slope, the stepped slope is individually intersected with top and bottom planes of existing side slope; a toe of existing side slope is taken as a toe of the extension side slope, and gradient of the extension side slope is determined according to positions of the toe and an expanded width. An outer side of stepped slope is filled with a geogrid reinforcement layer in a layered manner, a slope protection structure is arranged on an outer side of the geogrid reinforcement layer to form extension equivalent side slope; a drainage system is arranged at a bottom of the extension side slope.

Disclosed herein are a construction structure and method for an underground facility. The construction structure for an underground facility includes: a facility body including a foundation constructed by pouring concrete, and a cover member extending in the front-back direction and having both ends configured to extend downward and be fixed to the top surface of the foundation to form a tunnel-shaped space therebelow; and a soil cover layer formed to cover the facility body with soil. The construction method for an underground facility includes: forming a pit in the ground; constructing a foundation on the bottom surface of the pit; constructing a cover member to cover the top of the foundation; and constructing a soil cover layer by covering the pit with soil to cover the cover member.

An improved soil reinforcing system for use with mechanically stabilized earth (MSE) structures includes a crimped reinforcement element fabricated with a series of crimps and linear portions that may be regularly or irregularly spaced. An anchor connector is positioned at the end thereof and contains anchor contact zones for resistance welding fixing the anchor connector to the end of the crimped reinforcement element. The anchor connectors are formed of bent wire materials with continuous or a series of contact zones or adaptively a shortened plate form with a series of contact zones. The anchor connectors are resistance welded to the end of the reinforcement element and form a unitary soil reinforcing system thereby.