High-strength prestressed concrete culvert pipe

Abstract

The utility model discloses a high-strength prestressed concrete culvert pipe which comprises a concrete pouring pipe body and a steel bar set in the concrete pouring pipe body, and the steel bar set comprises a ring-shaped steel bar set and a connecting steel bar set. The ring-shaped steel bar set comprises a first steel bar ring and a second steel bar ring, the diameter of the first steel bar ring is larger than that of the second steel bar ring, the first steel bar ring and the second steel bar ring are concentric circles on the same plane, gaps are formed between the inner ring of the first steel bar ring and the outer ring of the second steel bar ring, and a plurality of reinforcing steel bar pieces are connected between the gaps. The ring-shaped steel bar sets are distributed on the same straight line at equal intervals in an array mode, a plurality of connecting steel bar sets are connected between every two adjacent ring-shaped steel bar sets, and the reinforcing steel bar pieces form a triangular structure which is high in stability. And the longitudinal structural strength of the pipe body is kept by connecting the corresponding points of the steel bars of the triangular structures of the adjacent ring-shaped steel bar groups, so that the longitudinal strength of the concrete pouring pipe body is further enhanced, and the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete culverts, in particular to a high-strength prestressed concrete culvert. Background Art

[0002] Culvert refers to a pipe buried below the ground surface, cast with reinforced concrete, commonly known as cement pipe. Small culverts are also made of metal materials. It is used as a water diversion pipe under the entire cofferdam dam, and is generally used as a water transmission pipe. Cement pipes are mostly used as culverts for water supply and drainage pipes in most cities in my country. Prestressed concrete structure is a structure that applies pressure to it before it bears the load, so that the internal force of the concrete in the tensile zone under the action of external loads produces compressive stress, which is used to offset or reduce the tensile stress generated by the external load, so that the structure does not crack or cracks later under normal use. The existing culvert structure is too simple, resulting in insufficient functionality. There is no steel structure inside the culvert when it is formed, or the random placement of the steel structure cannot ensure the strength of the side wall of the pipe body. The strength is insufficient, the prestressed design is not in place, and the quality of the culvert product is affected, resulting in the service life of the culvert being affected. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model proposes a high-strength prestressed concrete culvert.

[0004] The utility model provides a high-strength prestressed concrete culvert, comprising a concrete casting pipe body and a steel bar group inside the pipe body, wherein the steel bar group comprises a ring steel bar group and a connecting steel bar group;

[0005] The ring-shaped steel bar group includes a first steel bar ring and a second steel bar ring, the diameter of the first steel bar ring is greater than the diameter of the second steel bar ring, the first steel bar ring and the second steel bar ring are concentric circles on the same plane, there is a gap between the inner circle of the first steel bar ring and the outer circle of the second steel bar ring, and a plurality of reinforcing steel bars are connected between the inner circle of the first steel bar ring and the outer circle of the second steel bar ring;

[0006] The ring-shaped steel bar groups are arranged in an array with equal distances on the same straight line, and multiple groups of connecting steel bar groups are connected between two adjacent groups of the ring-shaped steel bar groups.

[0007] Preferably, the reinforcing steel bar member includes a first reinforcing bar and a second reinforcing bar, the two ends of the first reinforcing bar and the second reinforcing bar are respectively connected between the first reinforcing bar circle and the second reinforcing bar circle, the connection point between the first reinforcing bar and the first reinforcing bar circle and the connection point between the second reinforcing bar and the first reinforcing bar circle coincide with each other and are recorded as point A, the first reinforcing bar and the second reinforcing bar are mirror-symmetric with respect to a straight line connecting point A and the center of the first reinforcing bar circle, the connection point between the first reinforcing bar and the second reinforcing bar circle is recorded as point B, the connection point between the second reinforcing bar and the second reinforcing bar circle is recorded as point C, and there is a distance between point B and point C;

[0008] The reinforcing steel bars are distributed around the midpoint of the first steel bar ring.

[0009] Preferably, the number of reinforcing ribs is at least 20.

[0010] Preferably, the connecting steel bar group includes a first connecting steel bar, a second connecting steel bar and a third connecting steel bar, a first reinforcing bar is connected between points A of adjacent ring-shaped steel bar groups, a second reinforcing bar is connected between points B of adjacent ring-shaped steel bar groups, and a third reinforcing bar is connected between points C of adjacent ring-shaped steel bar groups.

[0011] Preferably, the first connecting steel bar, the second connecting steel bar and the third connecting steel bar are parallel to each other.

[0012] Preferably, the inner ring side wall of the concrete casting tube body has multiple groups of protrusions approaching the axis direction of the concrete casting tube body, and the multiple groups of protrusions are distributed at the inner ring center of the concrete casting tube body.

[0013] Preferably, the protrusions are provided in at least six groups.

[0014] In the utility model, a high-strength prestressed concrete culvert is proposed, in which a plurality of ring-shaped steel bar groups are arranged in the inner cavity of each concrete casting pipe body, and the plurality of ring-shaped steel bar groups are arranged at equal distances inside the culvert to enhance the strength of the concrete culvert. The steel bar ring of the ring-shaped steel bar group is provided with two rings, and a reinforcing steel bar is provided between the two rings of steel bar rings to enhance the strength between the steel bar rings.

[0015] When the pipe body is pre-buried, it is used to withstand the pressure on the side of the concrete casting pipe body. During the service of the structure, the pre-compressive stress can fully or partially offset the tensile stress caused by the load to avoid structural damage. The first reinforcing rib, the second reinforcing rib and the first steel bar ring and the second steel bar ring in the reinforced rigid rib form a triangular structure. Preferably, the angle between the first reinforcing rib and the second reinforcing rib is 60 degrees. The triangle formed by the above components is an equilateral triangle with strong stability. Adjacent ring-shaped steel bar groups are connected by the first reinforcing rib, the second reinforcing rib and the third reinforcing rib, so that the corresponding points of the steel bars of the triangular structure of adjacent ring-shaped steel bar groups are connected to maintain the longitudinal structural strength of the pipe body. When the concrete casting pipe body is cast, the above-mentioned steel bar structure is placed between the outer mold and the inner mold, poured with concrete, and integrally formed with the protrusion, located on the inner wall of the pipe body, which can further enhance the longitudinal strength of the concrete casting pipe body, greatly improve the service life, and does not affect its internal water flow and other functions, and is easy to promote and apply.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the ring-shaped steel bar group in the utility model.

[0019] Figure 3 It is a structural schematic diagram of the steel bar group in the utility model.

[0020] Figure 4 It is a structural schematic diagram of the ring-shaped steel bar group and the connecting steel bar group in the utility model.

[0021] Figure 5 It is an exploded view of the ring-shaped steel bar group and the connecting steel bar group in the utility model.

[0022] Explanation of the reference numerals in the figure: 1, first reinforcing steel ring; 2, second reinforcing steel ring; 3, reinforcing steel bar; 301, first reinforcing rib; 302, second reinforcing rib;

[0023] 4. Connecting steel bar group; 401. first connecting steel bar; 402. second connecting steel bar; 403. third connecting steel bar;

[0024] 5. Concrete pouring pipe body; 501. Protrusion. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] like Figure 1-Figure 5 A high-strength prestressed concrete culvert shown includes a concrete casting pipe body 5 and a steel bar group inside the pipe body, wherein the steel bar group includes a ring steel bar group and a connecting steel bar group 4;

[0027] The ring-shaped steel bar group includes a first steel bar ring 1 and a second steel bar ring 2, the diameter of the first steel bar ring 1 is greater than the diameter of the second steel bar ring 2, the first steel bar ring 1 and the second steel bar ring 2 are concentric circles on the same plane, there is a gap between the inner circle of the first steel bar ring 1 and the outer circle of the second steel bar ring 2, and a plurality of reinforcing steel bars 3 are connected between the inner circle of the first steel bar ring 1 and the outer circle of the second steel bar ring 2;

[0028] The ring-shaped steel bar groups are arranged in an array with equal distances on the same straight line, and multiple groups of connecting steel bar groups 4 are connected between two adjacent groups of ring-shaped steel bar groups.

[0029] Multiple groups of ring-shaped steel bars are arranged in the inner cavity of each concrete casting pipe body 5, and the multiple groups of ring-shaped steel bars are arranged at equal distances inside the inner cavity to enhance the strength of the concrete culvert. The steel bars of the ring-shaped steel bars are arranged in two circles, and a reinforcing steel bar 3 is arranged between the two circles of steel bars to enhance the strength between the steel bars. When the pipe body is pre-buried, it is used to withstand the pressure on the side of the concrete casting pipe body 5. During the service life of the structure, the pre-compression stress can fully or partially offset the tensile stress caused by the load to avoid structural damage.

[0030] Preferably, the reinforcing steel bar member 3 includes a first reinforcing rib 301 and a second reinforcing rib 302, the two ends of the first reinforcing rib 301 and the second reinforcing rib 302 are respectively connected between the first reinforcing bar ring 1 and the second reinforcing rib 2, the connection point between the first reinforcing rib 301 and the first reinforcing bar ring 1 and the connection point between the second reinforcing rib 302 and the first reinforcing bar ring 1 coincide with each other and are recorded as point A, the first reinforcing rib 301 and the second reinforcing rib 302 are mirror-symmetrical about the straight line connecting the point A and the center of the first reinforcing bar ring 1, the connection point between the first reinforcing rib 301 and the second reinforcing bar ring 2 is recorded as point B, the connection point between the second reinforcing rib 302 and the second reinforcing bar ring 2 is recorded as point C, and there is a distance between point B and point C;

[0031] The reinforcing steel bars are distributed around the midpoint of the first steel bar ring 1 .

[0032] The first reinforcing rib 301, the second reinforcing rib 302 and the first steel ring 1 and the second steel ring 2 in the reinforcing rib member form a triangular structure. Preferably, the angle between the first reinforcing rib 301 and the second reinforcing rib 302 is 60 degrees. The triangle formed by the above components is an equilateral triangle and has strong stability.

[0033] Preferably, the number of reinforcing ribs is at least 20.

[0034] The center of the reinforcing rib is distributed in the gap between the first reinforcing bar ring 1 and the second reinforcing bar ring 2, which can well ensure the stability of the side wall of the pipe body when subjected to forces in all directions and ensure the strength.

[0035] Preferably, the connecting steel bar group 4 includes a first connecting steel bar 401, a second connecting steel bar 402 and a third connecting steel bar 403, a first reinforcing rib 301 is connected between points A of adjacent ring-shaped steel bar groups, a second reinforcing rib 302 is connected between points B of adjacent ring-shaped steel bar groups, and a third reinforcing rib is connected between points C of adjacent ring-shaped steel bar groups.

[0036] Adjacent ring-shaped steel bar groups are connected by the first reinforcing rib 301, the second reinforcing rib 302 and the third reinforcing rib, so that the corresponding points of the steel bars of the triangular structure of the adjacent ring-shaped steel bar groups are connected to maintain the longitudinal structural strength of the tube body.

[0037] Preferably, the first connecting steel bar 401, the second connecting steel bar 402 and the third connecting steel bar 403 are parallel to each other.

[0038] Preferably, the inner circle side wall of the concrete casting tube body 5 has multiple groups of protrusions 501 approaching the axial direction of the concrete casting tube body 5 , and the multiple groups of protrusions 501 are distributed at the inner circle center of the concrete casting tube body 5 .

[0039] Preferably, the protrusions 501 are provided in at least six groups.

[0040] When the concrete casting pipe body 5 is cast and formed, the above-mentioned steel bar structure is placed between the outer mold and the inner mold, and concrete is poured into it. It is integrally formed with the protrusion 501 and is located on the inner wall of the pipe body. This can further enhance the longitudinal strength of the concrete casting pipe body 5, greatly improve its service life, and does not affect its internal water flow and other functions, and is easy to promote and apply.

[0041] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-strength prestressed concrete culvert, comprising a concrete casting pipe body (5) and a steel bar group inside the pipe body, characterized in that: The steel bar group comprises a ring steel bar group and a connecting steel bar group (4); The ring-shaped steel bar group comprises a first steel bar ring (1) and a second steel bar ring (2), the diameter of the first steel bar ring (1) is greater than the diameter of the second steel bar ring (2), the first steel bar ring (1) and the second steel bar ring (2) are concentric circles on the same plane, there is a gap between the inner ring of the first steel bar ring (1) and the outer ring of the second steel bar ring (2), and a plurality of reinforcing steel bars (3) are connected between the inner ring of the first steel bar ring (1) and the outer ring of the second steel bar ring (2); The ring-shaped steel bar groups are arranged in an array with equal distances on the same straight line, and a plurality of connecting steel bar groups (4) are connected between two adjacent ring-shaped steel bar groups; The reinforcing steel bar member (3) comprises a first reinforcing bar (301) and a second reinforcing bar (302), the two ends of the first reinforcing bar (301) and the second reinforcing bar (302) are respectively connected between the first reinforcing bar ring (1) and the second reinforcing bar ring (2), the connection point between the first reinforcing bar (301) and the first reinforcing bar ring (1) and the connection point between the second reinforcing bar (302) and the first reinforcing bar ring (1) coincide with each other and are recorded as point A, the first reinforcing bar (301) and the second reinforcing bar (302) are mirror-symmetrical about a straight line connecting point A and the center of the first reinforcing bar ring (1), the connection point between the first reinforcing bar (301) and the second reinforcing bar ring (2) is recorded as point B, the connection point between the second reinforcing bar (302) and the second reinforcing bar ring (2) is recorded as point C, and there is a distance between point B and point C; The reinforcing steel bar members (3) are distributed around the midpoint of the first steel bar ring (1); at least 20 groups of reinforcing steel bar members are provided; the connecting steel bar group (4) comprises a first connecting steel bar (401), a second connecting steel bar (402) and a third connecting steel bar (403); the first reinforcing bar (301) is connected between the A points of adjacent ring-shaped steel bar groups, the second reinforcing bar (302) is connected between the B points of adjacent ring-shaped steel bar groups, and the third reinforcing bar (401), the second connecting steel bar (402) and the third connecting steel bar (403) are parallel to each other.

2. A high-strength prestressed concrete culvert according to claim 1, characterized in that: The inner ring side wall of the concrete casting tube body (5) has multiple groups of protrusions (501) close to the axis direction of the concrete casting tube body (5), and the multiple groups of protrusions (501) are distributed at the center of the inner ring of the concrete casting tube body (5).

3. A high-strength prestressed concrete culvert according to claim 2, characterized in that: The protrusions (501) are provided in at least six groups.

Images