A prestressed aqueduct corrugated pipe positioning mesh structure

Abstract

The present invention relates to the technical field of prestressed aqueduct, and specifically to a prestressed aqueduct corrugated pipe positioning mesh structure. It comprises a longitudinal positioning mesh, a transverse positioning mesh and a corrugated pipe, wherein the corrugated pipe is radially positioned by the transverse positioning mesh, and the longitudinal positioning mesh comprises an upper longitudinal positioning mesh and a lower longitudinal positioning mesh separated from each other, an insulating bottom plate is provided at the bottom of the upper longitudinal positioning mesh, and a bottom supporting bottom plate is provided at the bottom of the lower longitudinal positioning mesh, and longitudinal steel bars and vertical supporting steel bars perpendicular to the longitudinal steel bars are provided on the insulating bottom plate and the bottom supporting bottom plate. The longitudinal positioning mesh is divided into an upper longitudinal positioning mesh and a lower longitudinal positioning mesh separated from each other by using the insulating bottom plate, and the stress is dispersed, so that the two ends bear a greater load, the pressure in the middle is reduced, and the structure is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of prestressed aqueducts, and in particular to a prestressed aqueduct corrugated pipe positioning mesh structure. Background Art

[0002] With the rapid development of social economy, aqueducts are widely used in various water conservancy projects due to their advantages. Aqueducts refer to overhead water troughs that transport channel water across rivers, valleys, depressions and roads. They are commonly used for irrigation and water delivery, as well as for flood and sand drainage. Large aqueducts can also be navigable. Aqueducts are mainly built with materials such as stone masonry, concrete and reinforced concrete.

[0003] However, for rectangular prestressed aqueducts, the positioning deviation of the corrugated pipe is large, especially for rectangular aqueducts, which are prone to structural deformation during the process of moving and placing. Therefore, it is necessary to position the prestressed aqueduct.

[0004] Commonly used positioning meshes usually include longitudinal positioning meshes and transverse positioning meshes to achieve longitudinal and radial positioning. Among them, the longitudinal positioning mesh mainly includes longitudinal steel bars that are consistent with the length direction of the aqueduct. The transverse positioning mesh mainly includes arc-shaped steel bars arranged around the inner wall of the aqueduct. Although the commonly used positioning meshes are provided with longitudinal positioning meshes and transverse positioning meshes, the longitudinal positioning mesh is a whole continuous mesh, which has stress concentration, high pressure in the middle, and poor structural stability. Summary of the invention

[0005] The purpose of the present invention is to provide a prestressed aqueduct corrugated pipe positioning mesh structure with high result stability in view of the defects of the prior art.

[0006] The present invention discloses a prestressed aqueduct corrugated pipe positioning mesh structure, and its technical scheme is as follows: it comprises a longitudinal positioning mesh, a transverse positioning mesh and a corrugated pipe, the longitudinal positioning mesh comprises a longitudinal steel bar which is consistent with the length direction of the aqueduct, the transverse positioning mesh comprises an arc-shaped steel bar which is arranged around the inner wall of the aqueduct, the corrugated pipe is arranged parallel to the longitudinal steel bar, and radial positioning is achieved by the transverse positioning mesh, the longitudinal positioning mesh comprises an upper longitudinal positioning mesh and a lower longitudinal positioning mesh which are separated from each other, an isolation bottom plate for isolating the upper longitudinal positioning mesh and the lower longitudinal positioning mesh is provided at the bottom of the upper longitudinal positioning mesh, a bottom supporting bottom plate is provided at the bottom of the lower longitudinal positioning mesh, and longitudinal steel bars and vertical supporting steel bars which are perpendicular to the longitudinal steel bars are provided on both the isolation bottom plate and the bottom supporting bottom plate.

[0007] More preferably, the transverse positioning mesh also includes radial steel bars vertically connected to the arc-shaped steel bars, and the arc-shaped steel bars and radial steel bars each include multiple groups, each group of the arc-shaped steel bars includes two arc-shaped steel bar monomers, and each group of the radial steel bars includes two radial steel bar monomers, and the two arc-shaped steel bar monomers and the two radial steel bar monomers form a limiting space at the intersection for radially limiting the corrugated pipe.

[0008] More preferably, the transverse positioning mesh is divided into an upper transverse positioning mesh, a middle transverse positioning mesh and a bottom transverse positioning mesh along the vertical direction, the upper transverse positioning mesh and the middle transverse positioning mesh are connected by an upper layer separation steel bar, and the middle layer transverse positioning mesh and the bottom transverse positioning mesh are connected by a middle layer separation steel bar.

[0009] More preferably, the upper transverse positioning mesh includes inner main steel bars, upper first arc-shaped steel bars, upper second arc-shaped steel bars and upper separation steel bars distributed in sequence from top to bottom along the vertical direction, and the inner main steel bars, upper first arc-shaped steel bars, upper second arc-shaped steel bars and upper separation steel bars are all arc-shaped steel bars arranged around the inner wall of the aqueduct, and the inner main steel bars, upper first arc-shaped steel bars, upper second arc-shaped steel bars and upper separation steel bars are connected by upper radial steel bars perpendicular to the arc-shaped steel bars.

[0010] More preferably, the middle-layer transverse positioning mesh includes a first oblique steel bar, a second oblique steel bar, a middle-layer arc-shaped steel bar and a middle-layer separating steel bar. The first oblique steel bar and the second oblique steel bar are arranged in an intersecting trend. The middle-layer arc-shaped steel bar and the middle-layer separating steel bar are both arc-shaped steel bars arranged around the inner wall of the aqueduct. One end of the first oblique steel bar and the second oblique steel bar are connected to the upper-layer separating steel bar, and the other end is connected to the middle-layer separating steel bar. The distance between the connection points of the first oblique steel bar, the second oblique steel bar and the upper-layer separating steel bar is greater than the distance between the connection points of the first oblique steel bar, the second oblique steel bar and the middle-layer separating steel bar. It is more preferred that the middle-layer arc-shaped steel bar is arranged between the upper-layer separating steel bar and the middle-layer separating steel bar. The angle between the first oblique steel bar and the second oblique steel bar is 60°.

[0011] More preferably, the bottom layer transverse positioning mesh includes a bottom layer first arc-shaped steel bar, a bottom layer second arc-shaped steel bar, an outer main body steel bar and a bottom layer radial steel bar which are sequentially distributed from top to bottom in the vertical direction; the bottom layer first arc-shaped steel bar, the bottom layer second arc-shaped steel bar and the outer main body steel bar are all arc-shaped steel bars arranged around the inner wall of the aqueduct; the middle layer separation steel bar, the bottom layer first arc-shaped steel bar and the bottom layer second arc-shaped steel bar are connected by bottom layer radial steel bars which are perpendicular to the arc-shaped steel bars; the arc-shaped inner side of the outer main body steel bar is fixedly connected to both ends of all the arc-shaped steel bars in the bottom layer transverse positioning mesh.

[0012] More preferably, it also includes a bellows protection mechanism, which includes a plurality of connecting steel bars and supporting steel rings evenly distributed along the length direction of the connecting steel bars, the connecting steel bars are arranged parallel to the corrugated pipe, the supporting steel rings are arranged perpendicular to the connecting steel bars, and the inner ring of the supporting steel rings is fixedly connected to the side wall of the connecting steel bars to form a steel cage for inserting the corrugated pipe.

[0013] More preferably, the supporting steel ring is a square steel ring, and the number of the connecting steel bars is four, and the four connecting steel bars are respectively fixedly connected to the four corners inside the square steel ring.

[0014] More preferably, the corrugated pipe includes an upper corrugated pipe, a middle corrugated pipe and a bottom corrugated pipe, the upper corrugated pipe is radially positioned by an upper transverse positioning mesh, the middle corrugated pipe is radially positioned by a middle transverse positioning mesh, and the bottom corrugated pipe is radially positioned by a bottom transverse positioning mesh.

[0015] The beneficial effects of the present invention are:

[0016] 1. Use the isolation bottom plate to divide the longitudinal positioning mesh into upper longitudinal positioning mesh and lower longitudinal positioning mesh separated from each other, disperse the stress, make the two ends bear greater load, reduce the pressure in the middle, and make the structure more stable.

[0017] 2. The transverse positioning mesh is divided into three layers to reduce the impact force of the overall structure and achieve better buffering effect. Specifically, the overall arc radius is positioned and fixed through the inner main steel bars, and the upper radial steel bars play a radial supporting role to disperse the force borne by the structure and prevent stress concentration. The middle-layer support structure is the support structure in the middle of the outer side, which plays a role of connection protection.

[0018] 3. The middle layer of the transverse positioning mesh adopts the first inclined steel bars and the second inclined steel bars which are at an angle to each other to replace the radial steel bars, so that the middle layer forms a continuous triangular support, which greatly improves the stability of the middle layer positioning mesh.

[0019] 4. A steel cage for protection is set outside the corrugated pipe to ensure that the corrugated pipe is not damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the longitudinal positioning mesh of the present invention;

[0021] Figure 2 for Figure 1 A partial enlarged schematic diagram of

[0022] Figure 3 It is a structural schematic diagram of the transverse positioning mesh of the present invention;

[0023] Figure 4 for Figure 3Schematic diagram of the connection between the upper and middle lateral positioning mesh sheets and the middle lateral positioning mesh sheets;

[0024] Figure 5 for Figure 3 Schematic diagram of the connection between the middle-layer lateral positioning mesh and the bottom-layer lateral positioning mesh.

[0025] Figure 6 It is a structural schematic diagram of the bellows protection mechanism.

[0026] In the figure: 1-inner main reinforcement; 2-upper radial reinforcement; 3-upper first arc reinforcement; 4-upper second arc reinforcement; 5-upper separation reinforcement; 6-first diagonal reinforcement; 7-the second inclined steel bar; 8-the upper corrugated pipe; 9-the middle corrugated pipe; 10-the middle separation steel bar; 11-the first arc steel bar of the bottom layer; 12-the second arc steel bar of the bottom layer; 13-the outer main steel bar; 14-the bottom corrugated pipe; 15-the middle horizontal positioning mesh; 16-the bottom radial steel bar; 17-the protective layer; 18-the support steel ring; 19-the connecting steel bar; 20-the upper longitudinal positioning mesh; 21-the isolation bottom plate; 22-the bottom support bottom plate; 23-the side vertical support plate; 24-the first top longitudinal steel bar; 25-the corrugated pipe protection mechanism; 26-the top corrugated pipe; 27-the first top longitudinal steel bar; 28-the top vertical support steel bar; 29-the lower longitudinal steel bar; 30-the lower longitudinal positioning mesh; 31-the middle arc steel bar; 32-the upper horizontal positioning mesh, 33-the bottom horizontal positioning mesh. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not constitute a limitation on the present invention.

[0028] like Figure 1 and 2 As shown, a prestressed aqueduct corrugated pipe positioning mesh structure includes a longitudinal positioning mesh, a transverse positioning mesh and a corrugated pipe, the longitudinal positioning mesh includes a longitudinal steel bar consistent with the length direction of the aqueduct, the transverse positioning mesh includes an arc-shaped steel bar arranged around the inner wall of the aqueduct, the corrugated pipe is arranged parallel to the longitudinal steel bar, and radial positioning is achieved by the transverse positioning mesh, the longitudinal positioning mesh includes an upper longitudinal positioning mesh 20 and a lower longitudinal positioning mesh 30 separated from each other, an isolation bottom plate 21 for isolating the upper longitudinal positioning mesh 20 and the lower longitudinal positioning mesh 30 is provided at the bottom of the upper longitudinal positioning mesh 20, a bottom supporting bottom plate 22 is provided at the bottom of the lower longitudinal positioning mesh 30, and longitudinal steel bars and vertical supporting steel bars perpendicular to the longitudinal steel bars are provided on the isolation bottom plate 21 and the bottom supporting bottom plate 22.

[0029] The upper longitudinal positioning mesh 20 includes an insulating bottom plate 21, a first top longitudinal steel bar 24, a top corrugated pipe 26, a first top longitudinal steel bar 27 and a top vertical supporting steel bar 28. 26 is installed below the first top longitudinal steel bar 24, and the first top longitudinal steel bar 27 is installed below the top corrugated pipe 26. The first top longitudinal steel bar 27 is connected and fixed to the top corrugated pipe 26 through the top vertical supporting steel bar 28. An insulating bottom plate 21 is installed below the first top longitudinal steel bar 27, which divides the structure into two layers and can play a supporting and insulating role.

[0030] The lower longitudinal positioning mesh 30 includes a bottom support base plate 22, lower longitudinal reinforcements 29 and side vertical support plates 23. The side vertical support plates 23 are vertically fixed on the bottom support base plate 22, and the lower longitudinal reinforcements 29 are arranged longitudinally and perpendicular to the side vertical support plates 23.

[0031] like Figure 3-5 As shown, the transverse positioning mesh is divided into an upper transverse positioning mesh 32, a middle transverse positioning mesh 15 and a bottom transverse positioning mesh 33 along the vertical direction. The upper transverse positioning mesh 32 and the middle transverse positioning mesh 15 are connected by an upper separating steel bar 5, and the middle transverse positioning mesh 15 and the bottom transverse positioning mesh 33 are connected by a middle separating steel bar 10.

[0032] The upper transverse positioning mesh 32 includes an inner main steel bar 1, an upper first arc steel bar 3, an upper second arc steel bar 4 and an upper separation steel bar 5 which are sequentially distributed from top to bottom in the vertical direction. The inner main steel bar 1, the upper first arc steel bar 3, the upper second arc steel bar 4 and the upper separation steel bar 5 are arc steel bars arranged around the inner wall of the aqueduct. The inner main steel bar 1, the upper first arc steel bar 3, the upper second arc steel bar 4 and the upper separation steel bar 5 are connected by an upper radial steel bar 2 which is perpendicular to the arc steel bars. Among them, the inner main steel bar 1 positions and fixes the overall arc radius to determine the overall size of the structure.

[0033] The middle-layer transverse positioning mesh 15 includes a first diagonal steel bar 6, a second diagonal steel bar 7, a middle-layer arc-shaped steel bar 31 and a middle-layer separation steel bar 10. The first diagonal steel bar 6 and the second diagonal steel bar 7 are arranged in an intersecting trend. The middle-layer arc-shaped steel bar 31 and the middle-layer separation steel bar 10 are arc-shaped steel bars arranged around the inner wall of the aqueduct. One end of the first diagonal steel bar 6 and the second diagonal steel bar 7 are connected to the upper separation steel bar 5, and the other end is connected to the middle-layer separation steel bar 10. The distance between the connection points of the first diagonal steel bar 6, the second diagonal steel bar 7 and the upper separation steel bar 5 is greater than the distance between the connection points of the first diagonal steel bar 6, the second diagonal steel bar 7 and the middle-layer separation steel bar 10. The middle-layer arc-shaped steel bar 31 is arranged between the upper separation steel bar 5 and the middle-layer separation steel bar 10. The angle between the first diagonal steel bar 6 and the second diagonal steel bar 7 is 60°.

[0034] The bottom transverse positioning mesh 33 includes the bottom first arc steel bar 11, the bottom second arc steel bar 12, the outer main steel bar 13 and the bottom radial steel bar 16 which are sequentially distributed from top to bottom in the vertical direction. The bottom first arc steel bar 11, the bottom second arc steel bar 12 and the outer main steel bar 13 are all arc steel bars arranged around the inner wall of the aqueduct. The middle layer separation steel bar 10, the bottom first arc steel bar 11 and the bottom second arc steel bar 12 are connected by the bottom radial steel bar 16 which is perpendicular to the arc steel bar. The arc inner side of the outer main steel bar 13 is fixedly connected to both ends of all the arc steel bars in the bottom transverse positioning mesh. The angles of the upper radial steel bar 2 and the bottom radial steel bar 16 are both radial lines, which bear greater loads and are more stable when used. The bottom radial steel bar 16 is fixed to the bottom first arc steel bar 11 by welding, and the upper end surface of the bottom radial steel bar 16 is welded and fixed with the middle layer support mechanism 15, which is fixed by spot welding to facilitate pre-positioning of the structure.

[0035] The transverse positioning mesh also includes radial steel bars vertically connected to the arc-shaped steel bars. The arc-shaped steel bars and radial steel bars each include multiple groups. Each group of arc-shaped steel bars includes two arc-shaped steel bar monomers, and each group of radial steel bars includes two radial steel bar monomers. The two arc-shaped steel bar monomers and the two radial steel bar monomers form a limiting space for radially limiting the corrugated pipe at the intersection. The corrugated pipe includes an upper layer of corrugated pipe 8, a middle layer of corrugated pipe 9 and a bottom layer of corrugated pipe 14. The upper layer of corrugated pipe 8 is radially positioned by the upper layer of transverse positioning mesh, the middle layer of corrugated pipe 9 is radially positioned by the middle layer of transverse positioning mesh, and the bottom layer of corrugated pipe 14 is radially positioned by the bottom layer of transverse positioning mesh. Among them, the intersection of the first inclined steel bar 6 and the second inclined steel bar 7 of the middle layer of transverse positioning mesh 15 and the middle layer of arc-shaped steel bar 31 also forms a limiting space for radially limiting the corrugated pipe, and the radial limiting space is used to radially limit the middle layer of corrugated pipe 9.

[0036] It also includes a bellows protection mechanism 25, which includes a plurality of connecting steel bars 19 and support steel rings 18 evenly distributed along the length direction of the connecting steel bars 19. The connecting steel bars 19 are arranged parallel to the bellows, and the support steel rings 18 are arranged perpendicular to the connecting steel bars 19. The inner ring of the support steel ring 18 is welded to the side wall of the connecting steel bars 19 to form a steel cage for placing the bellows. The support steel ring 18 is a square steel ring, and there are four connecting steel bars 19. The four connecting steel bars 19 are fixedly connected to the four corners inside the square steel ring respectively.

[0037] like Figure 6 As shown, the outer wall of the upper corrugated pipe 8 is covered with a protective layer 17 , and the upper corrugated pipe 8 is arranged in a steel cage formed by four connecting steel bars 19 and a supporting steel ring 18 to achieve radial limitation of the upper corrugated pipe 8 .

[0038] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

Claims

1. A prestressed aqueduct corrugated pipe positioning mesh structure, comprising a longitudinal positioning mesh, a transverse positioning mesh and a corrugated pipe, wherein the longitudinal positioning mesh comprises a longitudinal steel bar in the same direction as the length of the aqueduct, and the transverse positioning mesh comprises an arc-shaped steel bar arranged around the inner wall of the aqueduct, characterized in that: The corrugated pipe is arranged parallel to the longitudinal steel bars, and radial positioning is achieved by a transverse positioning mesh, the longitudinal positioning mesh comprises an upper longitudinal positioning mesh (20) and a lower longitudinal positioning mesh (30) separated from each other, an isolation bottom plate (21) for isolating the upper longitudinal positioning mesh (20) and the lower longitudinal positioning mesh (30) is provided at the bottom of the upper longitudinal positioning mesh (20), a bottom supporting bottom plate (22) is provided at the bottom of the lower longitudinal positioning mesh (30), and longitudinal steel bars and vertical supporting steel bars perpendicular to the longitudinal steel bars are provided on the isolation bottom plate (21) and the bottom supporting bottom plate (22); The transverse positioning mesh also includes radial steel bars vertically connected to the arc-shaped steel bars, and the arc-shaped steel bars and radial steel bars each include multiple groups, each group of the arc-shaped steel bars includes two arc-shaped steel bar monomers, and each group of the radial steel bars includes two radial steel bar monomers, and the two arc-shaped steel bar monomers and the two radial steel bar monomers form a limiting space for radially limiting the corrugated pipe at the intersection; The transverse positioning mesh is divided into an upper transverse positioning mesh (32), a middle transverse positioning mesh (15) and a bottom transverse positioning mesh (33) along the vertical direction; the upper transverse positioning mesh (32) and the middle transverse positioning mesh (15) are connected via an upper separation steel bar (5); and the middle transverse positioning mesh (15) and the bottom transverse positioning mesh (33) are connected via a middle separation steel bar (10).

2. The prestressed aqueduct corrugated pipe positioning mesh structure according to claim 1 is characterized in that: The upper transverse positioning mesh (32) comprises an inner main body steel bar (1), an upper first arc-shaped steel bar (3), an upper second arc-shaped steel bar (4) and an upper separation steel bar (5) which are arranged in sequence from top to bottom in the vertical direction. The inner main body steel bar (1), the upper first arc-shaped steel bar (3), the upper second arc-shaped steel bar (4) and the upper separation steel bar (5) are all arc-shaped steel bars arranged around the inner wall of the aqueduct. The inner main body steel bar (1), the upper first arc-shaped steel bar (3), the upper second arc-shaped steel bar (4) and the upper separation steel bar (5) are connected by an upper radial steel bar (2) which is perpendicular to the arc-shaped steel bars.

3. The prestressed aqueduct corrugated pipe positioning mesh structure according to claim 1, characterized in that: The middle-layer transverse positioning mesh (15) comprises a first inclined steel bar (6), a second inclined steel bar (7), a middle-layer arc-shaped steel bar (31) and a middle-layer separation steel bar (10); the first inclined steel bar (6) and the second inclined steel bar (7) are arranged in an intersecting trend; the middle-layer arc-shaped steel bar (31) and the middle-layer separation steel bar (10) are arc-shaped steel bars arranged around the inner wall of the aqueduct; one end of the first inclined steel bar (6) and the second inclined steel bar (7) are connected to the upper-layer separation steel bar (5), and the other end is connected to the middle-layer separation steel bar (10); the distance between the connection points of the first inclined steel bar (6) and the second inclined steel bar (7) and the upper-layer separation steel bar (5) is greater than the distance between the connection points of the first inclined steel bar (6) and the second inclined steel bar (7) and the middle-layer separation steel bar (10); the middle-layer arc-shaped steel bar (31) is arranged between the upper-layer separation steel bar (5) and the middle-layer separation steel bar (10).

4. The prestressed aqueduct corrugated pipe positioning mesh structure according to claim 3 is characterized in that: The angle between the first inclined steel bar (6) and the second inclined steel bar (7) is 60°.

5. The prestressed aqueduct corrugated pipe positioning mesh structure according to claim 1, characterized in that: The bottom transverse positioning mesh (33) comprises a bottom first arc-shaped steel bar (11), a bottom second arc-shaped steel bar (12), an outer main body steel bar (13) and a bottom radial steel bar (16) which are sequentially distributed from top to bottom along the vertical direction. The bottom first arc-shaped steel bar (11), the bottom second arc-shaped steel bar (12) and the outer main body steel bar (13) are all arc-shaped steel bars arranged around the inner wall of the aqueduct. The middle layer separation steel bar (10), the bottom first arc-shaped steel bar (11) and the bottom second arc-shaped steel bar (12) are connected by the bottom radial steel bar (16) which is perpendicular to the arc-shaped steel bars. The arc-shaped inner side of the outer main body steel bar (13) is fixedly connected to both ends of all the arc-shaped steel bars in the bottom transverse positioning mesh.

6. The prestressed aqueduct corrugated pipe positioning mesh structure according to claim 1, characterized in that: The invention also comprises a bellows protection mechanism (25), wherein the bellows protection mechanism (25) comprises a plurality of connecting steel bars (19) and support steel rings (18) evenly distributed along the length direction of the connecting steel bars (19), wherein the connecting steel bars (19) are arranged parallel to the bellows, and the support steel rings (18) are arranged perpendicular to the connecting steel bars (19), and the inner ring of the support steel ring (18) is fixedly connected to the side wall of the connecting steel bars (19) to form a steel cage for inserting the bellows.

7. The prestressed aqueduct corrugated pipe positioning mesh structure according to claim 6, characterized in that: The supporting steel ring (18) is a square steel ring, and there are four connecting steel bars (19). The four connecting steel bars (19) are respectively fixedly connected to the four corners inside the square steel ring.

8. The prestressed aqueduct corrugated pipe positioning mesh structure according to claim 1, characterized in that: The corrugated pipe comprises an upper layer corrugated pipe (8), a middle layer corrugated pipe (9) and a bottom layer corrugated pipe (14); the upper layer corrugated pipe (8) is radially positioned by an upper layer transverse positioning mesh, the middle layer corrugated pipe (9) is radially positioned by a middle layer transverse positioning mesh, and the bottom layer corrugated pipe (14) is radially positioned by a bottom layer transverse positioning mesh.

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