초록 ▼

The system comprises a limited number of equal groups of formwork pieces, each group comprising: —intermediate pieces (1) of constant curvature and width along the entire length thereof and—end pieces (2) forming two symmetrical lateral corners of triangular or trapezoidal outline, with a curvature

The system comprises a limited number of equal groups of formwork pieces, each group comprising: —intermediate pieces (1) of constant curvature and width along the entire length thereof and—end pieces (2) forming two symmetrical lateral corners of triangular or trapezoidal outline, with a curvature equal to that of the intermediate pieces. This system allows for forming, with the same groups of pieces, successive formwork segments of varying or constant section for building towers. The invention also includes a building method and the tower thus obtained.

대표청구항 ▼

1. System for building concrete towers applicable in the by-section construction of reinforced or prestressed concrete towers comprising a plurality of equal groups of formwork pieces, which are configured to allow the formation of successive formwork sections, and which delimit an outer surface of

1. System for building concrete towers applicable in the by-section construction of reinforced or prestressed concrete towers comprising a plurality of equal groups of formwork pieces, which are configured to allow the formation of successive formwork sections, and which delimit an outer surface of a section of the tower to be built, said plurality of equal groups being equal to the number of sides or faces of the tower to be built, wherein each group of pieces comprises: a plurality of intermediate pieces, having a base, a top end, and two parallel vertical sides, said intermediate pieces providing a curved surface of constant curvature and width along the entire length thereof and,a plurality of end pieces, forming two symmetrical lateral corners having a triangular or trapezoidal outline, wherein the end pieces have a base, an upper apex, a vertical side and an oblique side; said lateral corners providing: a curved surface having the same curvature as that of the intermediate pieces, and a decreasing width from the base to the upper apex; and the oblique side and the base of the lateral corners, formed by the end pieces, define an angle between them that corresponds to the angle of inclination of the sides of the tower to be built; and the base of the lateral corners, formed by the end pieces, provide the same length as the base of one of the intermediate pieces, or the sum of the bases of two or more intermediate pieces; said groups of pieces being dimensioned to form, by combining a plurality of intermediate pieces, arranged vertically and laterally attached, the sides of a formwork for building a section of a tower of constant cross-section; and to form, by means of the combination of the end pieces and of a varying number of intermediate pieces laterally attached and arranged with a certain inclination with respect to the vertical, sides of a formwork for building a section of a tower of varying cross-section. 2. A method for building a concrete tower having “n” sides, comprising the steps of: a) providing “n” groups of formwork pieces, wherein each group comprises a plurality of end pieces and a plurality of intermediate pieces having a curved surface of constant curvature and width along the entire length thereof, andb) arranging the intermediate pieces in side-by-side relationship;c) arranging a first end piece at a first end of the intermediate pieces and a second end piece at a second end of the intermediate pieces to side of formwork wherein the end pieces are of triangular or trapezoidal outline with the same curved surface of curvature as that of the intermediate pieces, and a decreasing width from the base to an upper apex;d) repeating steps a-c “n” times to form “n” sides of formwork;e) connecting the “n” sides of formwork to form a first formwork section of annular configuration, with “n” of faces or sides, with the same curvature and the same inclination the first formwork section presenting a height-proportional cross-section variation;c) building a first tower section by pouring concrete into the first formwork section;d) lifting the formwork pieces of the first formwork section to a second level, eliminating from each formwork face, the same number of intermediate pieces or end pieces, thereby forming a second formwork section of annular configuration, with “n” faces or sides, the same curvature and the same inclination as the first formwork section, said second formwork section-constituting an extension of varying or constant cross-section of the first section of the tower;e) building a second tower section by pouring concrete into the second formwork section; andf) repeating steps d) and e) until reaching the desired height of the tower. 3. The method for building a concrete tower according to claim 2, wherein said tower comprises “n” sides of constant curvature, formed by respective consecutive sections, at different levels, formed by the intersection of “n” cylindrical surfaces inclined at the same angle at each level and whose intersection defines ridges describing a polygon. 4. The method for building a concrete tower according to claim 3, wherein the tower comprises a section having a cross-section that varies in an increasing or decreasing way in proportion with its height. 5. The method for building a concrete tower according to claim 3, wherein the tower comprises a section of constant cross-section having an end connected with a a section of varying cross-section. 6. A system for building reinforced or prestressed concrete towers, comprising: a plurality of groups of formwork pieces, wherein each group is configured to form successive formwork sections, wherein each group delimits an outer surface of a section of the tower to be built and wherein the number of groups is equal to the number of sides or faces of the tower to be built, wherein each group of formwork pieces comprises: a plurality of substantially similar intermediate pieces arranged in side-by-side relation, wherein each intermediate piece has a base, a top end and two parallel vertical sides;a plurality of end pieces, wherein a first end piece is disposed at a first end of the group of formwork piece and a second end piece is disposed at a second end of the group of formwork pieces;wherein all of the formwork pieces between the first and second end pieces are intermediate pieces and wherein the intermediate pieces provide a curved surface of constant curvature and width along the entire length thereof and,wherein the end pieces form two symmetrical lateral corners having a triangular or trapezoidal outline, wherein the end pieces have a base, an upper apex, a vertical side and an oblique side; said lateral corners providing: a curved surface having the same curvature as that of the intermediate pieces, and a decreasing width from the base to the upper apex; and the oblique side and the base of the lateral corners, formed by the end pieces, define an angle between them that corresponds to the angle of inclination of the sides of the tower to be built; and the base of the lateral corners, formed by the end pieces, provide the same length as the base of one of the intermediate pieces, or the sum of the bases of two or more intermediate pieces;wherein the plurality of groups are arranged to form the sides of a formwork for building a section of a tower of constant cross-section.