Fabricated prestressed square culvert structure

Abstract

The utility model relates to the technical field of traffic construction assembly square culverts, and discloses an assembly type prestress square culvert structure which comprises a square culvert base and a square culvert upper frame, the interior of the square culvert base and the interior of the square culvert upper frame are filled with steel bar frameworks according to the contours of the square culvert base and the square culvert upper frame during pouring, and two lower side plates are provided with V-shaped grooves. The two lower side plates are each provided with two fixing penetrating holes, the fixing penetrating holes penetrate out of the outer surfaces of the lower side plates from the V-shaped grooves, acting force can be transmitted downwards to the tensile steel bar columns through the steel keel frame, and at the moment, the acting force transmitted to the tensile steel bar columns can be dispersed to the square culvert base by the lower side plates to be borne; by means of the design, acting force can be evenly distributed on the whole structure, the problem of local stress concentration is reduced, and meanwhile the problem that due to the fact that no reasonable stress dispersion mechanism exists in a traditional structure, too high stress is likely to be generated on the local portion of the structure, and the structure is damaged is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to traffic construction assembly square culvert technical field, concretely is a kind of assembly type prestressed square culvert structure. BACKGROUND

[0002] Square culvert, as its name implies, refers to the culvert with reinforced concrete box type section, and its cross section shape is square or rectangular. This structure form has a wide range of applications in engineering, especially in places where water flow, vehicles or pedestrians need to be accommodated and guided, such as roads, bridges and tunnels. In the assembly type prestressed square culvert structure, the square culvert is the main load-bearing and flow-guiding component, which is manufactured in the factory by prefabrication and assembled on site. This prefabricated component method has many advantages, such as fast construction speed, controllable quality, material saving and environmental protection, etc.

[0003] In the traditional assembly type square culvert structure, there is no reasonable stress dispersion mechanism, which can easily cause excessive stress in the local structure, leading to structural damage, which is very harmful to safety. INVENTION CONTENTS

[0004] (I) Technical problem solved

[0005] In view of the shortcomings of the prior art, the utility model provides an assembly type prestressed square culvert structure, which solves the problem of excessive stress in the local structure caused by the lack of reasonable stress dispersion mechanism in the traditional structure, leading to structural damage.

[0006] (II) Technical scheme

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an assembly type prestressed square culvert structure, comprising a square culvert base and a square culvert upper frame, the square culvert base and the square culvert upper frame are filled with steel reinforcement skeleton according to their external contour during pouring;

[0008] Two V-shaped grooves are provided on the two lower side plates, and two fixing holes are provided on the two lower side plates, the fixing holes are penetrated from the V-shaped grooves to the outer surface of the lower side plate;

[0009] V-shaped side plates matching the contour of V-shaped groove are integrally formed on the lower surface of the square culvert upper frame, and lower side plates are integrally formed on the two side positions of the square culvert base;

[0010] Two V-shaped side plates are provided with two identical fixing holes, and a tensile steel column is arranged in the fixing hole;

[0011] A plurality of steel reinforcement skeletons are placed inside the square culvert upper frame during pouring, and the steel reinforcement skeleton is an arch shape with good bearing capacity.

[0012] Preferably, the lower ends of the plurality of steel keel frames extend into the fixing perforations on the V-shaped side plates, and the lower ends of the steel keel frames are matched with corresponding tensile steel bar columns, and the steel keel frames are used to disperse and transmit the vertical bearing force to the tensile steel bar columns.

[0013] Preferably, the profile edges of the steel keel frames extend out of the outer surfaces of the square culvert upper frames and the V-shaped side plates, and the positions of the steel keel frames extending out of the square culvert base top plates are integrally poured with top covering ribs.

[0014] Preferably, the portions of the steel keel frames extending out of the inner walls of the V-shaped side plates are integrally poured with lower covering ribs, and one end of the square culvert base and the square culvert upper frame is integrally poured with a butt joint protruding block, and the end of the square culvert base and the square culvert upper frame away from the butt joint protruding block is provided with a butt joint recess.

[0015] Preferably, the tensile steel bar columns are provided with trapezoidal grooves at two positions, and the two ends of the tensile steel bar columns extend out of corresponding trapezoidal grooves, and the trapezoidal grooves are provided with rear-mounted trapezoidal blocks for fixing the tensile steel bar columns, and the tensile steel bar columns are used to improve the longitudinal tensile force of the lower side plates.

[0016] Preferably, the bottom walls of the two V-shaped grooves are fixedly connected with inclined stop blocks, and the bottoms of the two V-shaped side plates are provided with inclined angles matched with the inclined stop blocks.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the utility model provides a kind of assembled prestressed square culvert structure, with following beneficial effects:

[0019] 1、The assembled prestressed square culvert structure, by steel keel frame can be to the force downward to tensile steel bar column, the force transmitted to tensile steel bar column is dispersed to square culvert base by lower side plate and is borne, this design makes that force can be evenly distributed to entire structure, reduces the problem of local stress concentration, also avoids the problem that structure is damaged due to not reasonable stress dispersion mechanism in traditional structure, easily generates excessively high stress in structure local.

[0020] 2、The assembled prestressed square culvert structure, by the butt joint of V-shaped side plate and inclined stop block, and the fixing of tensile steel bar column and rear-mounted trapezoidal block, the overall stability and carrying capacity of structure are enhanced, also simplify installation process, improve construction efficiency, avoid the problem that more adjustment and alignment steps are needed in traditional mode, affect installation efficiency.

[0021] 3、The assembled prestressed square culvert structure, through the inclined angle of the lower end of the two V-shaped side plates, the force is transmitted to the bottom wall of the V-shaped groove, and the inclined stop block arranged at the same time can transmit part of the force from the lower side plate to the bottom plate of the square culvert base. This design enables the force to be more effectively transmitted to the supporting structure, improving the efficiency of stress transmission.

[0022] 4、The assembled prestressed square culvert structure, through the setting of the tensile steel column and the rear-mounted trapezoidal block, the force acting on the inclined surface of the V-shaped groove can be converted into longitudinal force, thereby being shared by the tensile steel column. This design can more effectively maintain the stability of the structure and avoid the problem that the inclined force cannot be effectively handled in the traditional way, which leads to instability of the structure under certain working conditions and makes the structure prone to damage when subjected to sudden impact. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Fig. 2 It is a schematic diagram of the assembled structure of the utility model;

[0025] Fig. 3 It is a schematic diagram of the steel keel frame structure of the utility model.

[0026] Fig. The force acting on: 1, square culvert base; 2, square culvert upper frame; 3, V-shaped groove; 4, V-shaped side plate; 5, fixed perforation; 6, tensile steel column; 7, inclined stop block; 8, inclined angle; 9, steel keel frame; 10, lower covering rib; 11, top covering rib; 12, butt joint groove; 13, butt joint protrusion; 14, trapezoidal groove; 15, rear-mounted trapezoidal block; 16, lower side plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figs. 1-3 The utility model provides a new technical scheme: an assembled prestressed square culvert structure, which comprises a square culvert base 1 and a square culvert upper frame 2. The square culvert base 1 and the square culvert upper frame 2 are both filled with a steel skeleton according to their external contours during pouring.

[0029] Two V-shaped grooves 3 are arranged on the two lower side plates 16, and two fixed perforations 5 are formed in the two lower side plates 16. The fixed perforations 5 penetrate the external surface of the lower side plate 16 from the V-shaped groove 3.

[0030] The V-shaped side plates 4 are integrally formed on both sides of the lower surface of the square culvert upper frame 2 and are matched with the profile of the V-shaped groove 3, and the square culvert base 1 is integrally formed with the lower side plates 16 on both sides.

[0031] Two identical fixing perforations 5 are formed on each of the two V-shaped side plates 4, and a tensile steel column 6 is arranged in each fixing perforation 5.

[0032] A plurality of steel keel frames 9 are placed inside the square culvert upper frame 2 during pouring, and the steel keel frames 9 are arched and have good bearing capacity.

[0033] Further, the lower ends of the plurality of steel keel frames 9 extend into the fixing perforations 5 on the V-shaped side plates 4, the lower ends of the steel keel frames 9 are matched with the corresponding tensile steel columns 6, and the steel keel frames 9 are used to disperse and transmit the vertical bearing force to the tensile steel columns 6.

[0034] Further, the profile edges of the steel keel frames 9 extend out of the outer surfaces of the square culvert upper frame 2 and the V-shaped side plates 4, and the positions of the steel keel frames 9 extending out of the top plate of the square culvert base 1 are integrally poured with top covering ribs 11.

[0035] Further, the part of the steel keel frame 9 extending out of the inner wall of the V-shaped side plate 4 is integrally poured with a lower covering rib 10, one end of the square culvert base 1 and the square culvert upper frame 2 is integrally poured with a butt joint protrusion 13, and the end of the square culvert base 1 and the square culvert upper frame 2 away from the butt joint protrusion 13 is provided with a butt joint groove 12.

[0036] Further, the tensile steel columns 6 are provided with trapezoidal grooves 14 at both sides, the two ends of the tensile steel columns 6 extend out of the corresponding trapezoidal grooves 14, the trapezoidal grooves 14 are provided with rear trapezoidal blocks 15 for fixing the tensile steel columns 6, and the tensile steel columns 6 are used to improve the longitudinal tensile strength of the lower side plates 16.

[0037] Further, the bottom walls of the two V-shaped grooves 3 are fixedly connected with inclined stop blocks 7, and the bottoms of the two V-shaped side plates 4 are provided with bevels 8 matched with the inclined stop blocks 7.

[0038] Further, when in use, the upper frame 2 of the square culvert is hoisted to the upper side of the square culvert base 1, so that the inclined angle 8 of the two V-shaped side plates 4 can correspond to the position of the inclined block 7, and then the upper frame 2 of the square culvert is lowered, at this time the fixed perforations 5 on the V-shaped side plates 4 and the lower side plate 16 coincide together, at this time the anti-tension steel column 6 is inserted into the corresponding fixed perforation 5, at this time the rear trapezoidal block 15 is poured and formed in the trapezoidal groove 14, thereby fixing the two ends of the anti-tension steel column 6, through the butt joint of the V-shaped side plate 4 and the inclined block 7, and the fixation of the anti-tension steel column 6 and the rear trapezoidal block 15, the overall stability and load-bearing capacity of the structure are enhanced, the installation process is simplified, the construction efficiency is improved, and the problem of affecting the installation efficiency due to more adjustment and alignment steps in the traditional way is avoided.

[0039] Further, when installing multiple groups of square culverts, the butt joint groove 12 and the butt joint block 13 can be used to butt joint multiple groups, and through the design of the butt joint groove 12 and the butt joint block 13, the multiple groups of square culverts can be quickly and accurately butt jointed, thereby facilitating large-scale construction.

[0040] Further, after installation, when the top plate of the upper frame 2 of the square culvert bears downward force, a part of the force can be transmitted to the steel keel frame 9 inside through the top covering rib 11, and the steel keel frame 9 can transmit the force downward to the anti-tension steel column 6, at this time the force transmitted to the anti-tension steel column 6 is dispersed to the square culvert base 1 by the lower side plate 16, this design makes the force evenly distributed to the entire structure, reduces the problem of local stress concentration, and also avoids the problem that the traditional structure is prone to generate excessive stress in the local structure due to the lack of a reasonable stress dispersion mechanism, leading to the destruction of the structure.

[0041] Further, the upper frame 2 of the square culvert itself can also bear a certain force, and the upper frame 2 of the square culvert transmits the force to the bottom wall of the V-shaped groove 3 through the inclined angle 8 at the lower end of the two V-shaped side plates 4, and the inclined block 7 is arranged to transmit a part of the force from the lower side plate 16 to the bottom plate of the square culvert base 1, this design makes the force more effectively transmitted to the supporting structure, improves the stress transmission efficiency.

[0042] Further, a part of the force can also be transmitted to the inclined surface of the V-shaped groove 3 through the inclined surface of the V-shaped side plate 4, and at this time the anti-tension steel column 6 and the rear trapezoidal block 15 are arranged to transmit the force to the inclined surface of the V-shaped groove 3, and the force is converted into longitudinal force, thereby being shared by the anti-tension steel column 6, this design can more effectively maintain the stability of the structure, and avoid the problem that the traditional way cannot effectively handle the inclined force, leading to the instability of the structure under certain working conditions, and the structure is prone to damage when subjected to sudden impact.

[0043] Working principle: when using, the square culvert upper frame 2 is hoisted to the upper side of the square culvert base 1, so that the inclined angle 8 on the two V-shaped side plates 4 can correspond to the position of the inclined stop block 7, then the square culvert upper frame 2 is lowered, at this time the fixed perforations 5 on the V-shaped side plates 4 and the lower side plate 16 coincide, at this time the tensile steel column 6 is inserted into the corresponding fixed perforation 5, at this time the rear trapezoidal block 15 is poured and formed in the trapezoidal groove 14, so as to fix the two ends of the tensile steel column 6.

[0044] Further, when installing multiple groups of square culverts, the butt joint groove 12 and the butt joint block 13 can be used for butt joint.

[0045] Further, after installation, when the top plate of the square culvert upper frame 2 bears downward force, the top covering rib 11 can transmit part of the force to the steel keel frame 9 inside, and the steel keel frame 9 can transmit the force downward to the tensile steel column 6, at this time the force transmitted to the tensile steel column 6 is dispersed to the square culvert base 1 by the lower side plate 16.

[0046] Further, the square culvert upper frame 2 itself can also bear certain force, the square culvert upper frame 2 transmits the force to the bottom wall of the V-shaped groove 3 through the inclined angle 8 at the lower end of the two V-shaped side plates 4, and the inclined stop block 7 can transmit part of the force from the lower side plate 16 to the bottom plate of the square culvert base 1.

[0047] Further, part of the force can also be transmitted to the inclined surface of the V-shaped groove 3 through the inclined surface of the V-shaped side plate 4, at this time the tensile steel column 6 and the rear trapezoidal block 15 can convert the force transmitted to the inclined surface of the V-shaped groove 3 into longitudinal force, so as to be borne by the tensile steel column 6.

[0048] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A prefabricated prestressed square culvert structure, characterized in that: Including square culvert base (1) and square culvert upper frame (2), square culvert base (1) and square culvert upper frame (2) inside are filled with steel reinforcement cage according to its shape contour when pouring; Two lower side plates (16) are provided with V-shaped grooves (3), and two lower side plates (16) are provided with two fixed perforations (5), which are penetrated from the outer surface of the lower side plate (16) from the V-shaped groove (3); The lower surface of the square culvert upper frame (2) is integrally formed with V-shaped side plates (4) matched with the V-shaped groove (3), and the square culvert base (1) is integrally formed with lower side plates (16) on both sides; Two V-shaped side plates (4) are provided with two fixed perforations (5), and the fixed perforations (5) are provided with anti-tension steel columns (6); The square culvert upper frame (2) is placed with a plurality of steel dragon frames (9) inside when pouring, and the steel dragon frame (9) is arched.

2. The prefabricated prestressed square culvert structure according to claim 1, characterized in that: The lower end of the steel dragon frame (9) extends into the fixed perforation (5) on the V-shaped side plate (4), and the lower end of the steel dragon frame (9) is matched with the corresponding anti-tension steel column (6), and the steel dragon frame (9) is used to disperse and transmit the vertical bearing force to the anti-tension steel column (6).

3. The prefabricated prestressed square culvert structure according to claim 2, characterized in that: The contour edge of the steel dragon frame (9) extends out of the outer surface of the square culvert upper frame (2) and the V-shaped side plate (4), and the position of the steel dragon frame (9) extending out of the top plate of the square culvert base (1) is integrally poured with a top covering rib (11).

4. The prefabricated prestressed square culvert structure according to claim 3, characterized in that: The part of the steel dragon frame (9) extending out of the inner wall of the V-shaped side plate (4) is integrally poured with a lower covering rib (10), one end of the square culvert base (1) and the square culvert upper frame (2) is integrally poured with an abutting convex block (13), and the other end of the square culvert base (1) and the square culvert upper frame (2) is provided with an abutting recess (12).

5. The prefabricated prestressed square culvert structure according to claim 3, characterized in that: The anti-tension steel column (6) is provided with a trapezoidal groove (14) at both sides, and the anti-tension steel column (6) extends out of the corresponding trapezoidal groove (14) at both ends, and the trapezoidal groove (14) is provided with a rear trapezoidal block (15) for fixing the anti-tension steel column (6), and the anti-tension steel column (6) is used to improve the longitudinal tensile strength of the lower side plate (16).

6. The prefabricated prestressed square culvert structure according to claim 2, characterized in that: The bottom wall of the two V-shaped grooves (3) is fixedly connected with an inclined stop block (7), and the bottom of the two V-shaped side plates (4) is provided with an inclined angle (8) matched with the inclined stop block (7).

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