A post-tensioned tube foundation for supporting a structure subject to high upset forces is described herein. The post-tensioned tube foundation includes an outer CMP positioned within an excavated hole. A foundation plug is positioned within the cavity of the outer CMP and extends across the bottom of the excavated hole. An inner CMP is positioned within the cavity of the outer CMP such that an annular space is defined between the inner CMP and the outer CMP. A tubular concrete base is positioned within the gap defined between the inner CMP and the outer CMP. A void forming element is positioned within the gap defined between the inner CMP and adjacent the top surface of the foundation plug.

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.

A sheet pile retaining wall system employing corrugated sheet piles not requiring temporary shoring to be used when widening and/or stabilization of existing highway embankment. The wall system provides a front face wall having a plurality of resistance fins perpendicularly extending therefrom via three-way connectors. The fin sheet piles first include a brace fin sheet for reducing stresses in the front face wall, then a series of additional resistance fin sheets terminating at an elevation below the face wall for accommodating a pipe drainage/utility cradle. Between the slope of the existing embankment, a temporary excavation bench, an excavation backslope, and the higher front face wall is reinforced concrete backfill for pre-stressing the wall system when fluidand, when set, optionally engaging supplementary structural features within the set concrete backfill such as dowels/tie down anchors.

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 sheet pile retaining wall system employing corrugated sheet piles not requiring temporary shoring to be used when widening and/or stabilization of existing highway embankment. The wall system provides a front face wall having a plurality of resistance fins perpendicularly extending therefrom via three-way connectors. The fin sheet piles first include a brace fin sheet for reducing stresses in the front face wall, then a series of additional resistance fin sheets terminating at an elevation below the face wall for accommodating a pipe drainage/utility cradle. Between the slope of the existing embankment, a temporary excavation bench, an excavation backslope, and the higher front face wall is reinforced concrete backfill for pre-stressing the wall system when fluidand, when set, optionally engaging supplementary structural features within the set concrete backfill such as dowels/tie down anchors.

A box type duct with circumferential obtuse angle connection. Unit plates respectively located on the upper, lower and two side surfaces are spliced in the circumferential direction to form a unit pipe section, and the unit pipe sections are spliced in the axial direction to form a box type duct; wherein the unit plate is an arc-shaped corrugated plate arched to the outside of the box type duct, and the adjacent unit plates form an obtuse angle of circumferential connection. The cross section of the duct is in an approximately rectangular box shape, so the utilization ratio of clearance of the duct is high; the unit plate adopts an arc-shaped structure, and by utilizing the pipe-soil joint stressing principle, the strength and bearing capacity of the overall structure are maximized; and the box type duct adopts flat flange or angle steel flange connection in the circumferential direction.

A bridge system is provided that utilizes foundation structures that are formed of the combination of a metal-frame structure and cast-in-place concrete.

A corner connection structure of a steel structure comprehensive pipe gallery, where corrugated steel plates respectively located on an upper face, a lower face and two side faces are spliced in a circumferential direction to form pipe joints; when the corrugated steel plates are spliced in the circumferential direction, contact end portions of adjacent corrugated steel plates are provided with a pair of groove-shaped flanges capable of wrapping inner and outer walls of respective corrugated steel plate, contact faces of the pair of groove-shaped flanges are fixedly connected to each other, outer folded edges of the groove-shaped flanges and the outer walls of the corrugated steel plates are separated by gaps, inner folded edges of the groove-shaped flanges and the inner walls of the corrugated steel plates are separated by gaps, and inner reinforcing blocks and/or outer reinforcing blocks are respectively arranged in the gaps.

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 one-step sheet pile retaining wall system for embankment widening typically associated with highway widening not requiring temporary shoring. The wall system may provide a front wall face having a plurality of resistance fins perpendicularly extending therefrom. The fin sheet piles first include a brace fin sheet for reducing stresses in the front wall face, then a series of cradle fin sheets terminating at an elevation below the brace fin sheet for accommodating a pipe drainage/utility cradle, and finally a series of predominantly resistance fin sheets terminating at an elevation above the cradle fin sheets. Between the slope of the existing embankment and the higher front wall face may be cementitious flowable backfill for pre-stressing the wall system when fluid and, when set, supporting the aforementioned cradle, from which the remaining construction can build off of while reducing overall earth pressure acting on the wall face upon completion of construction.