Patent ID: 7980789

Claim:
A combination wall for supporting the ground comprising at least two tubular piles adapted to be rammed into the ground and a wall element inserted between two respective adjacent tubular piles, said tubular piles being provided with first interlock profiles that are used to hang the wall element by interlocking second interlock profiles that are provided on the wall element, said first and second interlock profiles defining an interlock connection when engaged, wherein the wall element that is hung between the tubular piles is formed as a segment of a circle with an at least approximately circle-segment-shaped cross-section having a maximum arc length of approximately 180° ; and wherein the interlock connection between the circle-segment-shaped wall element and each respective tubular pile comprises (1) the second interlock profile with a claw having a C-shaped cross-section, the C-shaped claw being formed by two mirror-symmetrical claw strips that protrude from a weld-on base with the free ends thereof defining an interlock jaw and enclosing an inner interlock chamber with an at least approximately circular or oval cross-section, and (2) the first interlock profile with a head strip that engages with the C-shaped claw, the first interlock profile having the head strip formed at the free end of a neck strip which protrudes from a weld-on base, wherein the thickness of the neck strip, viewed perpendicular to its longitudinal direction, is dimensioned smaller than the width of the head strip perpendicular to the longitudinal direction of the neck strip; wherein the weld-on base of the second interlock profile provided with the C-shaped claw is welded to the circle-segment-shaped wall element adjacent a flat side of a longitudinal edge thereof, such that the C-shaped claw with its interlock jaw points away from the flat side of the longitudinal edge in one of (a) a tangential and (b) a radial direction, respectively, of the circle-segment-shaped wall element; and wherein a weld-on strip protrudes from the weld-on base of the second interlock profile.