Structure comprising precast concrete elements with sealing element and corresponding precast building component

Abstract

The structure comprises at least two adjacent structural elements designed as precast concrete elements (6, 10), wherein the precast concrete elements (6, 10) each have a side recess (12) on opposite sides, which together define an area between the precast concrete elements (6, 10) in which at least one reinforcement (16) and a cast-in-place concrete supplement (14) are arranged, which fix the precast concrete elements (6, 10) against each other, wherein in each of the precast concrete elements (6, 10) in the area of ​​the side recess (12) a sealing element (18) is arranged which extends in the direction of a longitudinal extension direction of the side recess (12) and perpendicular to it into the precast concrete and into the cast-in-place concrete supplement (14).

Description

[0001] The present invention relates to a structure comprising at least two adjacent structural elements designed as precast concrete components. The invention further relates to corresponding precast concrete components for use in such a structure.

[0002] Adjacent precast concrete elements form a seam between them. Water or other liquids can penetrate through such a seam if water or other liquids are permanently present on one side of the structure. The seam is typically subsequently sealed using externally applied sealing elements.

[0003] Structures incorporating precast concrete elements are known from the prior art. DE 10 2006 057 134 A1 discloses a structure designed as a precast concrete wall with adjacent precast concrete elements.

[0004] DE 20 2020 102 433 U1 discloses a structure designed as a precast concrete wall with at least two adjacent precast concrete elements. One of the precast concrete elements has a joint sealing strip embedded in an end face of the element, projecting perpendicularly from the end face and running along the end face. The joint sealing strip is located in a recess in an end face of the other precast concrete element. This seals the joint between the two elements.

[0005] The object of the present invention is to provide a structure in which the seam between two adjacent precast concrete elements is reliably and permanently sealed against penetrating water or other liquids in a simple manner.

[0006] The problem is solved by a structure according to claim 1 and by precast concrete elements according to claim 7.

[0007] A bridge structure according to the invention comprises precast concrete elements arranged side by side, each with a lateral recess on opposite sides. These lateral recesses define an area in which reinforcement and a cast-in-place concrete topping are arranged, fixing the precast concrete elements to one another. According to the invention, a sealing element extending in the direction of the lateral recess is arranged in each of the precast concrete elements within the area of ​​the lateral recess. This sealing element extends perpendicularly to the longitudinal direction into the precast concrete and into the cast-in-place concrete topping. The sealing element is already positioned within the area of ​​the lateral recess during the fabrication of the precast concrete element. Such a sealing element penetrates the surface in which the precast concrete and the cast-in-place concrete topping of the structure are in contact with each other in the areas defined by the lateral recesses.The sealing element is embedded on one side in the precast concrete of the precast element and on the other side in the cast-in-place concrete topping. Any gap that may exist between the precast concrete element and the cast-in-place concrete topping, through which water or other liquids could potentially penetrate from one side of the structure to the other, is interrupted by the sealing element, which extends across this gap and along the longitudinal direction of the side recess. The structure is thus permanently and reliably sealed against penetrating water or other liquids.

[0008] Preferably, the sealing element is designed in the form of a strip. Such a sealing element has a length that is greater than its width, with both the length and width being significantly greater than the thickness of the sealing element. Sealing elements preferred according to the invention have a width of 250 mm to 400 mm and a thickness of 1 mm to 2 mm. Such strip-shaped sealing elements are typically sold as rolls with a length of several meters or several dozen meters. They are used with a length that approximately corresponds to the longitudinal extent of the lateral recess of the precast concrete element.

[0009] The length can, for example, range from 1 m to 5 m, depending on the dimensions of the corresponding precast concrete elements. In a preferred embodiment, strip-shaped sealing elements can also include elements arranged transversely to their width. Such elements arranged transversely to the width of the strip-shaped sealing element can, in particular, serve to form formwork for the precast concrete element in the area of ​​the side recess, similar to permanent formwork.

[0010] Preferably, the sealing element is formed by a joint tape or a joint sheet. A joint tape is a sealing element made, for example, of a polymer, particularly PVC. A joint sheet is generally made of a metallic material, particularly steel. Such joint sheets may be coated. Typical coatings are bitumen or bitumen mixtures or polymers. Sealing elements designed as joint tape or joint sheet are readily available, inexpensive, and easy to handle. According to the invention, when producing corresponding precast concrete elements, they can be arranged in the area of ​​the side recess such that they extend perpendicularly to it into the finished concrete, and thus also into the area of ​​the cast-in-place concrete infill in the structure.

[0011] Preferably, the embedment length of the sealing element in both the precast concrete element and the cast-in-place concrete infill is at least 5 cm, preferably at least 10 cm. The embedment length referred to here is the distance by which the sealing element extends into the precast concrete element in a direction perpendicular to the longitudinal direction of the side recess. This ensures a reliable seal against water penetration or the passage of other liquids. With such an embedment length of at least 5 cm, preferably at least 10 cm, the sealing element can form a strong bond with the finished concrete of the precast element or the cast-in-place concrete of the infill. A gap between two adjacent precast concrete elements is thus reliably and securely interrupted and sealed by the sealing element.

[0012] Preferably, the structure features at least one bored pile whose head extends into the area of ​​the lateral recesses between two precast concrete elements. The area between the lateral recesses of adjacent precast concrete elements can thus be used to accommodate a bored pile for the structure's deep foundation. The area between the lateral recesses of the two precast concrete elements is filled with reinforcement and cast-in-place concrete, and a bored pile located in this area is firmly connected to the structure. Constructing a building with a deep foundation is particularly easy with a structure designed in this way.

[0013] The sealing elements are particularly preferably arranged above the bored pile, especially above the pile head, in the side recesses of the precast concrete elements. Such a structure is easy to erect. In particular, this reduces the risk of the bored pile damaging the sealing elements in the side recesses during construction and thus impairing their sealing effect.

[0014] A bored pile typically has connecting reinforcement extending upwards beyond its head. In this case, the sealing elements are located in the area of ​​the connecting reinforcement, preferably above the connecting reinforcement, within the precast concrete elements and the cast-in-place concrete topping. This further reduces the risk of damaging the sealing elements during construction. The structure can be erected more easily and reliably.

[0015] The problem initially posed is also solved by a precast concrete element for use in a structure according to any one of claims 1 to 6. Such a precast concrete element comprises at least one side recess for receiving reinforcement and cast-in-place concrete. The precast concrete element according to the invention has a sealing element arranged in the area of ​​the side recess and extending into the finished concrete in the direction of a longitudinal extension of the side recess and perpendicular thereto, projecting beyond the finished concrete of the precast concrete element. Such a precast concrete element can be used for the construction of a structure according to the invention. For this purpose, two such precast concrete elements are arranged adjacent to each other such that the respective side recesses face each other and form an area between them for receiving reinforcement and a cast-in-place concrete supplement.In this area, reinforcement is installed during the construction of a building, followed by a supplementary layer of cast-in-place concrete.

[0016] Preferably, the sealing element is designed in the form of a strip. Particularly preferably, the sealing element is formed by a joint tape or a joint sheet. Joint tapes or joint sheets are readily available and inexpensive.

[0017] Preferably, the embedment length of the sealing element in the precast concrete element is at least 5 cm, more preferably at least 10 cm. The sealing element preferably protrudes at least 5 cm, and more preferably at least 10 cm, beyond the finished concrete of the precast concrete element.

[0018] Further advantages and details of the invention can be found in the following description of the figures, which include exemplary embodiments of the invention. The figures schematically illustrate: Fig. 1 schematically a building according to the invention with several building elements arranged next to each other and designed as precast concrete elements; Fig. 2 a detailed view of two adjacent precast concrete elements of the Fig. 1 in the area of ​​the side recess in a sectional view.

[0019] Parts that function identically or similarly are, where appropriate, provided with identical reference numerals. Individual technical features of the embodiments described below can be combined with the features of the independent claims as well as with the features of individual embodiments described above to form articles according to the invention.

[0020] Fig. Figure 1 shows a structure 2, designed as a bridge abutment, in a plan view. The bridge abutment comprises an abutment wall 4 and wing walls 8. The abutment wall 4 is formed by abutment elements 6, which are precast concrete components. The wing walls 8 are formed by wing wall elements 10, which are also precast concrete components. Each of the components has side recesses 12 on opposite sides. Adjacent side recesses 12 define an area in which a cast-in-place concrete infill 14 is arranged. Reinforcement 16 is also arranged in the area of ​​the cast-in-place concrete infill 14, as shown in Figure 1. Fig. 2 shown.

[0021] Fig. Figure 2 shows a section of two adjacent structural elements with side recesses 12 in a sectional view. The section is perpendicular to one longitudinal direction of the precast concrete elements. A sealing element 18 is arranged in each of the precast concrete elements 6, 10 in the area of ​​the side recess 12. This sealing element is strip-shaped and arranged so that it runs in the direction of the longitudinal direction of the side recess 12 and extends perpendicularly to it into the precast concrete of the precast concrete element 6, 10. The longitudinal direction of the precast concrete elements 6, 10 is perpendicular to the plane of the drawing in the depicted plan view. The sealing element 18 projects beyond the precast concrete of which the precast concrete element 6, 10 is made, so that it also projects into the area of ​​the cast-in-place concrete infill 14. The reinforcement 16 is designed such that areas are recessed for the sealing elements 18.The reinforcement 16 can be inserted into the area limited by the two side recesses 12 in such a way that the sealing elements 18 are not damaged. Each of the sealing elements 18 is embedded perpendicular to the longitudinal direction of the side recess with an embedment length E into the precast concrete element 6,10 and with an embedment length E' into the cast-in-place concrete supplement 14.

[0022] In Fig.Figure 2 shows that the two adjacent precast concrete elements 6, 10 form a gap in the areas where they directly abut each other. The cast-in-place concrete extension 14 with its reinforcement 16 secures the two precast concrete elements 6, 10 against each other. A gap can form between the cast-in-place concrete extension 14 and the finished concrete of the precast concrete element 6, 10, through which water or other liquids present on one side of the structure can reach the other side and escape. The sealing element 18 of the structure, which extends into both the finished concrete of the precast concrete element 6, 10 and the cast-in-place concrete extension 14, reliably interrupts this path. Thus, a reliable and permanent seal of the structure against the penetration of water or other liquids is created in a simple manner. The sealing element 18 is embedded in the finished concrete and the cast-in-place concrete extension and protected from damage.Preferably, the gap between two adjacent precast concrete elements 6,10 on the side where water or other liquids are present is additionally sealed on the outside by a permanently elastic sealant.

Claims

[1] Structure comprising at least two adjacent structural elements designed as precast concrete elements (6, 10), wherein the precast concrete elements (6, 10) each have a side recess (12) on opposite sides, which together define an area between the precast concrete elements (6, 10) in which at least one reinforcement (16) and a cast-in-place concrete supplement (14) are arranged, which fix the precast concrete elements (6, 10) against each other, wherein in each of the precast concrete elements (6, 10) in the area of ​​the side recess (12) a sealing element (18) is arranged which extends in the direction of a longitudinal extension direction of the side recess (12) and perpendicular to it into the precast concrete and into the cast-in-place concrete supplement (14). [2] Structure according to claim 1, characterized by , that the sealing element (18) is designed in the shape of a strip [3] Structure according to claim 1 or 2, characterized by, that the sealing element (18) is formed by a joint tape or a joint sheet. [4] Structure according to any of the preceding claims, characterized by , that the embedment length (E, E') of the sealing element (18) into the precast concrete element (6,10) and into the cast-in-place concrete supplement (14) is at least 5 cm, preferably at least 10 cm. [5] Structure according to any of the preceding claims, characterized by , that it has at least one bored pile whose head extends into the area of ​​the side recesses (12) between two precast concrete elements (6,10). [6] Structure according to claim 5, characterized by , that the sealing elements (18) are arranged above the bored pile in the side recesses (12) of the precast concrete elements (6,10). [7] Precast concrete element (6, 10) for use in a structure according to one of claims 1 to 6, comprising at least one side recess (12) for receiving reinforcement (16) and cast-in-place concrete (14), characterized by, that the precast concrete element (6,10) has a sealing element (18) arranged in the area of ​​the side recess (12) and extending in the direction of a longitudinal extension direction of the side recess (12) and perpendicular to it into the finished concrete and projecting beyond the finished concrete of the precast concrete element (6,10). [8] Precast concrete element (6, 10) according to claim 7, characterized by , that the sealing element (18) is designed in the shape of a strip. [9] Precast concrete element (6, 10) according to claim 7 or 8, characterized by , that the sealing element (18) is formed by a joint tape or a joint sheet. [10] Precast concrete element (6, 10) according to one of claims 7 to 9, characterized by , that the embedment length (E, E') of the sealing element (18) is at least 5 cm, preferably at least 10 cm, and that the sealing element (18) is arranged to protrude at least 5 cm, preferably at least 10 cm, beyond the finished concrete of the precast concrete element (6,10).

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