Prefabricated bridge guardrail structure system and its construction method

Abstract

The present invention relates to an assembled bridge guard plate structure system and a construction method thereof, wherein the system comprises a box beam and a guard plate, wherein the guard plate is upright and longitudinally arranged above the ends of the flanges on both sides of the box beam, and the bottom end of the guard plate is inserted into the flange plate of the box beam and fixed and assembled by bolts. The present invention has a simple structure, reasonable force, and strong versatility. It fully utilizes the characteristics of factory processing, fast assembly, and detachable replacement, and cleverly utilizes the advantages of the concave and convex mortise and tenon structure to effectively improve the integrity and relative airtightness of the guard plate, and improves the use effect during the operation period; the structure has strong operability, can realize factory operation, can be detached and replaced, has high economic and social benefits, and has a wide range of application value in the field of bridge engineering.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to an assembled bridge guard plate structure system and a construction method thereof. Background Art

[0002] With the continuous improvement of construction technology, construction level and construction requirements, more and more new technologies and new methods are applied to the construction of bridge projects, making my country's bridge construction level leap into the world's advanced ranks. Although remarkable achievements have been made in the construction of various types of bridges, my country has a vast territory, uneven economic development levels, and a low overall economic level. We still focus on diversification and standardization to improve construction level and quality.

[0003] Bridge attachments are characterized by wide area, small quantity and many points, which often lead to extended construction period. Especially in the implementation process of bridge guard plate, there are still certain safety hazards, which even affect the use effect during the operation period. Therefore, it is proposed to seek a fast-assembly bridge guard plate structure system to solve the difficulties and design deficiencies in traditional construction, reduce construction difficulty and risk, save costs and shorten construction period. Summary of the invention

[0004] The purpose of the present invention is to provide an assembled bridge guard plate structure system and a construction method thereof, which can effectively improve the integrity and relative airtightness of the guard plate, reduce the noise generated during operation, reduce the construction difficulty and risk, save costs, and shorten the construction period.

[0005] The technical solution adopted by the present invention is:

[0006] The assembled bridge sheathing structure system is characterized by:

[0007] The system comprises a box beam and a guard plate, wherein the guard plate is upright and longitudinally arranged above the flange ends on both sides of the box beam, and the bottom end of the guard plate is inserted into the flange plate of the box beam and is fixed and assembled by bolts.

[0008] The guard plate includes a plurality of panels connected in sequence longitudinally. The longitudinal front and rear end surfaces of the panels are respectively provided with strip-shaped concave and convex tenons. When adjacent panels are butt-jointed, the corresponding convex tenons are inserted into the concave tenons to connect with each other.

[0009] The concave and convex tenons at both ends of the panel are set vertically throughout the length.

[0010] A downwardly protruding tenon is arranged at the bottom of the panel, and corresponding tenon holes are arranged at corresponding positions of the box beam flange plate. The tenon of the panel is inserted into the tenon holes of the box beam flange plate to connect with each other.

[0011] A hand hole is arranged inside the tenon hole of the box girder flange plate, and an arc-shaped through hole is arranged from the hand hole to the tenon hole and then to the end face of the box girder flange, which is the bridge deck bolt hole, and a corresponding guard plate bolt hole is arranged on the tenon of the panel.

[0012] The bolt is arc-shaped and is inserted into the bolt hole of the bridge deck from the end face of the box girder flange, and passes through the guard plate bolt hole of the panel, with the tail extending out of the hand hole.

[0013] The tail of the bolt is fixed in the hand hole by a nut.

[0014] A horizontal through hole is provided near the top of the panel, serving as a hanging hole for the panel.

[0015] The box beams are cast-in-place or prefabricated components, and the panels are all prefabricated;

[0016] The box beam and panel are reinforced concrete structure or steel structure.

[0017] The construction method of the assembled bridge guard plate structure system is characterized by:

[0018] The following steps are involved:

[0019] Step 1: Processing box beam:

[0020] In the factory or on site, according to the actual situation, the box beam is processed, and the tenon holes, hand holes and bridge deck bolt holes are accurately positioned and reserved;

[0021] Step 2: Cutting materials in the factory and making protective plate membranes:

[0022] In the factory, the material is cut according to the actual size and the fetal membrane for the guard plate processing is accurately made;

[0023] Step 3: Processing the guard plate:

[0024] Combined with the fetal membrane, the dimensions of the panel, the tenon, the mortise and tenon are precisely determined, and the bolt holes and hoisting holes of the guard plate are reserved, and the single panel is processed into shape for storage and maintenance;

[0025] Step 4: Arriving at the site, a single panel is installed:

[0026] Transport the single panel that meets the requirements from the factory to the assembly site, use the lifting holes to lift the single panel above the box beam, insert the tenon into the tenon hole, insert the bolt from the outside of the box beam, and tighten the nut to fix the panel to the box beam;

[0027] Step 5: Assemble the guard plate as a whole:

[0028] Repeat step 4 to install panels continuously, and make the tenons and mortises of the panels interlock with the tenons and mortises of the adjacent panels to ensure the integrity of the assembly;

[0029] Step 6: Sealing treatment:

[0030] After the guard plate is assembled, the hand holes are sealed with fine stone concrete or mortar to ensure a smooth bridge deck.

[0031] The present invention has the following advantages:

[0032] The present invention is used for the design and construction of guard plates for highway, railway and rail transit bridges. The structure is concise, the force is reasonable, and the versatility is strong. It makes full use of the characteristics of factory processing, fast assembly, and detachable replacement, and cleverly uses the advantages of the concave and convex mortise and tenon structure to effectively improve the integrity and relative airtightness of the guard plate, and improve the use effect during the operation period; and by adjusting the material and geometric dimensions of the panel, concave tenon, convex tenon and tenon head to change the overall rigidity of the guard plate structure system to meet various uses; and the shape of the guard plate can be arbitrarily adjusted according to the needs of the landscape, such as outer curvature and inner straightness, inner curvature and outer straightness, etc. At the same time, the structure has strong operability, can realize factory operation, can be detached and replaced, has high economic and social benefits, and has a wide range of application value in the field of bridge engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is the overall effect diagram of the present invention.

[0034] Figure 2 This is a large-scale drawing of the guard plate.

[0035] Figure 3 This is a large-scale drawing of the bridge deck.

[0036] Figure 4 To connect the large sample drawing.

[0037] In the figure, 1- panel, 2- tenon, 3- tenon, 4- tenon, 5- guard plate bolt hole, 6- tenon hole, 7- hand hole, 8- bridge deck bolt hole, 9- lifting hole, 10- bolt, 11- nut, 12- box girder, 13- guard plate. DETAILED DESCRIPTION

[0038] The present invention is described in detail below in conjunction with specific implementation modes.

[0039] The present invention relates to an assembled bridge guard plate structure system, which includes a box beam 12 and a guard plate 13. The guard plate 13 is upright and longitudinally arranged above the flange ends on both sides of the box beam 12. The bottom end of the guard plate 13 is inserted into the flange plate of the box beam 12 and fixed and assembled by bolts 10.

[0040] The guard plate 13 includes a plurality of panels 1 connected in sequence longitudinally. The longitudinal front and rear end surfaces of the panels 1 are respectively provided with strip-shaped concave tenons 2 and convex tenons 3, which are positioned correspondingly and have the same size and shape. When adjacent panels 1 are butt-jointed, the corresponding convex tenons 3 are inserted into the concave tenons 2 to connect with each other. The concave tenons 2 and convex tenons 3 at both ends of the panels 1 are arranged vertically throughout the length.

[0041] A downwardly protruding tenon 4 is provided at the bottom of the panel 1, and a corresponding tenon hole 6 is provided at the corresponding position of the flange plate of the box beam 12. The size, shape and relative position relationship of the tenon hole 6 are consistent with the tenon 4. The tenon 4 of the panel 1 is inserted into the tenon hole 6 of the flange plate of the box beam 12 and connected to each other.

[0042] A hand hole 7 is provided inside the tenon hole 6 of the flange plate of the box girder 12, which is wedge-shaped. An arc-shaped through hole is provided from the hand hole 7 to the tenon hole 6 and then to the flange end face of the box girder 12, which is a bridge deck bolt hole 8. The tenon 4 of the panel 1 is provided with a corresponding guard plate bolt hole 5. The bolt 10 is arc-shaped, inserted into the bridge deck bolt hole 8 from the flange end face of the box girder 12, and passes through the guard plate bolt hole 5 of the panel 1, and the tail extends out of the hand hole 7. The head of the bolt 11 is closely attached to the outer structural surface of the flange of the box girder 12. The tail of the bolt 10 is fixed in the hand hole 7 by the nut 11, and the hand hole 7 meets the space required to tighten the nut 11.

[0043] A transverse through hole is provided near the top of the panel 1 , serving as a hanging hole 9 of the panel 1 , and is at a certain distance from the edge of the panel 1 .

[0044] The box beam 12 and the panel 1 are both prefabricated parts, and are reinforced concrete structures or steel structures.

[0045] In the structure:

[0046] Panel 1 is 0.8 to 2.0 m high, and a single piece is 1.0 to 3.0 m long;

[0047] The thickness of panel 1 is 150-300 mm;

[0048] The concave tenon 2 and the convex tenon 3 are arranged in full length, the height of the convex tenon 3 matches the depth of the concave tenon 2, and the width and depth are generally 10 to 50 mm;

[0049] The tenon 4 and the tenon hole 6 are consistent in shape, size and spacing, generally with the following dimensions: length and depth 200-300 mm, longitudinal spacing 0.8-1.5 m, and width consistent with the panel 1;

[0050] The size of the tenon bolt hole 5 and the bridge deck bolt hole 8 is consistent with that of the bolt 10;

[0051] The bolt 10 and nut 11 are matched, generally M30 ~ M45;

[0052] The diameter of the lifting hole 9 is 50 to 80 mm, and the distance from the top of the panel 1 is generally 100 to 300 mm.

[0053] The dimensions of the present invention should generally be based on the structural type and spatial dimensions of the bridge structure, and the rigidity of its components should be sufficient to resist wind and snow loads, fatigue loads, and stress changes caused by environmental and temperature changes.

[0054] The assembled bridge guard plate structure system of the present invention is located above the outer edge of the bridge deck, and is composed of multiple guard plates assembled longitudinally. Each guard plate is connected to the bridge by bolts, and a hand hole is provided for easy removal and replacement during operation. Concave and convex tenons are provided on both sides of the guard plate, and adjacent guard plates are anchored to each other through each other's concave and convex tenons. At the same time, the overall rigidity of the guard plate structure system can be changed by adjusting the material and geometric dimensions of the panel, concave tenon, convex tenon and tenon head, and the shape of the guard plate can be adjusted arbitrarily according to the landscape requirements to meet various uses.

[0055] The present invention can effectively improve the integrity and relative airtightness of the guard plate, reduce the noise generated during operation, reduce the construction difficulty and risk, save costs, and shorten the construction period. After the present invention is applied, with the differences in the bridge structure type, space size, function and landscape requirements, and surrounding environment used in the specific project, its related structural parameters can be higher or lower, longer or shorter, stronger or weaker, more or less according to the actual project needs, such as: the model, material and size of the panel, concave tenon, convex tenon, tenon head, guard plate bolt hole, mortise hole, hand hole, bridge deck bolt hole, hoisting hole, etc., and the specification model, quantity, spacing, length, etc. of bolts and nuts.

[0056] The construction method of the assembled bridge guard plate structure system comprises the following steps:

[0057] Step 1: Processing box beam 12:

[0058] In the factory or on site, according to the actual situation, the box beam 12 is processed, and the tenon holes 6, hand holes 7 and bridge deck bolt holes 8 are accurately positioned and reserved;

[0059] Step 2: Cutting materials in the factory and making the protective plate 13 fetal membrane:

[0060] In the factory, the material is cut according to the actual size and the fetal membrane processed by the guard plate 13 is accurately made;

[0061] Step 3: Processing guard plate 13:

[0062] The dimensions of the panel 1, the tenon 2, the tenon 3, and the tenon 4 are precisely determined in combination with the fetal membrane, and the guard plate bolt holes 5 and the hoisting holes 9 are reserved, and the single panel 1 is processed into shape and stored and maintained;

[0063] Step 4: Arriving at the site, the single panel 1 is installed and formed:

[0064] The single panel 1 that meets the requirements is transported from the factory to the assembly site, and the single panel 1 is hoisted above the box beam 12 using the hoisting hole 9, the tenon 4 is inserted into the tenon hole 6, the bolt 10 is inserted from the outside of the box beam 12, and the nut 11 is tightened to fix the panel 1 to the box beam 12;

[0065] Step 5: Assemble the guard plate 13 as a whole:

[0066] Repeat step 4 to continuously install panel 1, and make its tenon 2 and tenon 3 engage with the tenon 3 and tenon 2 of the adjacent panel 1 to ensure the integrity of the assembly;

[0067] Step 6: Sealing treatment:

[0068] After the guard plate 13 is assembled, the hand hole 7 is sealed with fine stone concrete or mortar to ensure that the bridge deck is flat.

[0069] The present invention is used for the design and construction of guard plates for highway, railway and rail transit bridges. The guard plate structure system is located above the outer edge of the bridge deck and is composed of multiple guard plates assembled longitudinally. Each guard plate is connected to the bridge by bolts, and a hand hole is provided for easy disassembly and replacement during operation. Concave and convex tenons are provided on both sides of the guard plate, and adjacent guard plates are anchored to each other through each other's concave and convex tenons. At the same time, the overall rigidity of the guard plate structure system can be changed by adjusting the material and geometric dimensions of the panel, concave tenon, convex tenon and tenon head, and the shape of the guard plate can be adjusted arbitrarily according to the landscape requirements to meet various uses.

[0070] The content of the present invention is not limited to the embodiments listed, and any equivalent changes made to the technical solution of the present invention by ordinary technicians in this field after reading the description of the present invention are covered by the claims of the present invention.

Claims

1. The construction method of the assembled bridge guard plate structure system is characterized by: The system comprises a box beam (12) and a guard plate (13), wherein the guard plate (13) is upright and longitudinally arranged above the flange ends on both sides of the box beam (12), and the bottom end of the guard plate (13) is inserted into the flange plate of the box beam (12) and fixedly assembled by bolts (10); The guard plate (13) comprises a plurality of panels (1) connected in sequence longitudinally, and the longitudinal front and rear end surfaces of the panels (1) are respectively provided with strip-shaped concave tenons (2) and convex tenons (3), and when adjacent panels (1) are butt-jointed, the corresponding convex tenons (3) are inserted into the concave tenons (2) to connect with each other; The construction method comprises the following steps: Step 1: Processing box beam (12): In the factory or on site, according to the actual situation, the box beam (12) is processed, and the tenon holes (6), hand holes (7) and bridge deck bolt holes (8) are accurately positioned and reserved; Step 2: Cutting materials in the factory and making the protective plate (13) fetal membrane: In the factory, the membranes of the protective plates (13) are cut according to the actual size and accurately made; Step 3: Processing the guard plate (13): The dimensions of the panel (1), the concave tenon (2), the convex tenon (3), and the tenon head (4) are precisely determined in combination with the fetal membrane, and the bolt holes (5) and the lifting holes (9) of the guard plate are reserved, and the single panel (1) is processed into shape and stored and maintained; Step 4: Arriving at the site, the single panel (1) is installed and formed: A single panel (1) that meets the requirements is transported from the factory to the assembly site, and the single panel (1) is hoisted above the box beam (12) using the hoisting hole (9), the tenon (4) is inserted into the tenon hole (6), a bolt (10) is inserted from the outside of the box beam (12), and the nut (11) is tightened to fix the panel (1) to the box beam (12); Step 5: Assemble the guard plate (13) as a whole: Repeat step 4 to continuously install the panels (1), and make the tenons (2) and mortises (3) thereof engage with the mortises (3) and tenons (2) of the adjacent panels (1) to ensure the integrity of the assembled shape; Step 6: Sealing treatment: After the guard plate (13) is assembled, the hand hole (7) is sealed with fine stone concrete or mortar to ensure that the bridge deck is flat.

2. The construction method of the assembled bridge sheathing structure system according to claim 1 is characterized by: The concave tenons (2) and the convex tenons (3) at both ends of the panel (1) are vertically arranged throughout the entire length.

3. The construction method of the assembled bridge sheathing structure system according to claim 2 is characterized in that: A tenon (4) protruding downward is provided at the bottom of the panel (1), and a corresponding tenon hole (6) is provided at a corresponding position of the flange plate of the box beam (12). The tenon (4) of the panel (1) is inserted into the tenon hole (6) of the flange plate of the box beam (12) to connect them.

4. The construction method of the assembled bridge sheathing structure system according to claim 3 is characterized by: A hand hole (7) is arranged inside the tenon hole (6) of the flange plate of the box beam (12), and an arc-shaped through hole is arranged from the hand hole (7) to the tenon hole (6) and then to the flange end face of the box beam (12), which is a bridge deck bolt hole (8), and a corresponding guard plate bolt hole (5) is arranged on the tenon (4) of the panel (1).

5. The construction method of the assembled bridge sheathing structure system according to claim 4 is characterized in that: The bolt (10) is arc-shaped and is inserted into the bridge deck bolt hole (8) from the flange end face of the box girder (12), and passes through the guard plate bolt hole (5) of the panel (1), and the tail end extends out from the hand hole (7).

6. The construction method of the assembled bridge sheathing structure system according to claim 5 is characterized by: The tail of the bolt (10) is fixed in the hand hole (7) by a nut (11).

7. The construction method of the assembled bridge sheathing structure system according to claim 6 is characterized by: A transverse through hole is provided near the top of the panel (1), serving as a hanging hole (9) for the panel (1).

8. The construction method of the assembled bridge sheathing structure system according to claim 7 is characterized by: The box beam (12) is a cast-in-place or prefabricated component, and the panels (1) are all prefabricated components; The box girder (12) and the panel (1) are reinforced concrete structures or steel structures.

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