Viaduct surface structure

Abstract

The utility model provides a viaduct deck structure. The viaduct deck structure comprises at least two box girders and a cross beam arranged between the two box girders. The two ends of the cross beam are connected with the adjacent box girders through side beam webs, the side beam webs are located on the inner sides of the box girders, and the two vertical ends of the side beam webs protrude to form side beam flange parts. The cross beams are provided with cross beam webs, the two transverse ends of each cross beam are welded to the connecting parts of the adjacent side beam webs, and the two vertical ends of each cross beam web protrude to form cross beam flange parts. The two transverse ends of the flange parts of the cross beams extend to form inserting parts, the distance between the vertically adjacent inserting parts is matched with the distance between the end faces of the connecting parts and welded, and the distance between the transversely adjacent inserting parts is matched with the transverse distance between the flange parts of the side beams and welded. The viaduct deck structure solves the problems that at present, steel box girders are adopted in a large-span and high-bearing-capacity mode, installation of a connecting structure between the steel box girders is tedious, and the strength cannot meet the requirement of a large-span bridge.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to an elevated bridge deck structure. Background Art

[0002] Highway viaducts and railway viaducts, especially those requiring large spans and high load-bearing capacity, often use box girder structures due to their superior mechanical properties, economy and ease of construction.

[0003] A box girder is a type of beam used in bridge construction. It is hollow inside with flanges on both sides of the upper part, resembling a box, hence the name. Box girders in reinforced concrete structures are divided into prefabricated box girders and cast-in-place box girders. Box girders prefabricated in an independent site can be erected after the lower construction is completed using a bridge-erecting machine, which can speed up the project progress and save construction time; cast-in-place box girders are mostly used in large continuous bridges. Common types are mainly divided into two types based on material: prestressed reinforced concrete box girders and steel box girders. Prestressed reinforced concrete box girders are constructed on-site. In addition to longitudinal prestressing, some also have transverse prestressing. Steel box girders are generally processed in the factory and then transported to the site for installation. Some are all-steel structures, while others have partially reinforced concrete pavement.

[0004] However, the common connection structure between steel box girders is complicated to install and needs to be installed under hoisting. It is easy to shake during the hoisting process, making the welding process time-consuming and labor-intensive. In addition, the existing strength does not meet the requirements of viaducts with large horizontal spans. Summary of the Invention

[0005] The problem to be solved by the utility model is to provide an elevated bridge deck structure to solve the problem that steel box girders are currently used for large spans and high load-bearing capacity, but the connection structure between the steel box girders is relatively cumbersome to install and the strength does not meet the requirements of large span bridges.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: an elevated bridge deck structure, comprising at least two box beams arranged at intervals in the transverse direction, and a cross beam arranged between the two box beams, wherein the inner sides of the two box beams located at the transverse outermost ends are provided with side beam webs, and the inner and outer sides of the remaining box beams are provided with side beam webs, the two ends of the cross beam are connected to the two adjacent box beams through the side beam webs, the vertical ends of the side beam webs are both raised along the longitudinal sides to form side beam flanges, one transverse end of the side beam web is welded to the box beam, and the other end extends transversely outward to form a connecting portion The crossbeam includes a crossbeam web, the spacing between the two transverse end faces of the crossbeam web matches the spacing between the extended end faces of the connection parts on the two adjacent side beam webs, and they are welded to each other. The vertical ends of the crossbeam web are both raised along the longitudinal sides to form crossbeam flange parts, and the transverse ends of the crossbeam flange parts extend outward to form plug-in parts. The vertical spacing of the two vertically adjacent plug-in parts matches the spacing between the two vertical end faces of the connection part, and they are welded to each other. The transverse spacing of the two transversely adjacent plug-in parts matches the transverse spacing of the two transversely adjacent side beam flange parts, and they are welded to each other.

[0007] Compared with the existing technology, this technical solution increases the connection area and strength by providing side beam flanges protruding along the longitudinal ends at the vertical ends of the beam web and protruding along both sides at the vertical ends of the beam web.

[0008] In addition, the spacing between the two transverse end faces of the crossbeam web matches the spacing between the extended end faces of the connection parts on the two adjacent side beam webs, so that the crossbeam web can be quickly placed between the extended end faces of the connection parts of the two adjacent side beam webs, and the vertical spacing of the two vertically adjacent plug-in parts matches the spacing between the vertical end faces of the connection parts, so that the plug-in parts can be clipped onto the vertical end faces of the connection parts, reducing the occurrence of movement during welding and improving the welding efficiency, thereby realizing fast welding, making installation simpler, and avoiding the process of readjusting the position after dealing with shaking.

[0009] Furthermore, a plurality of reinforcing ribs are welded at intervals along the transverse direction of the crossbeam web, and the vertical ends of the reinforcing ribs are respectively welded to the two side beam flanges at the vertical ends of the crossbeam web. The provision of the reinforcing ribs can increase the vertical bearing strength of the entire crossbeam.

[0010] Furthermore, the box girder includes two side beams arranged on the inner and outer sides in the transverse direction. The side beam webs are mounted on the outer side walls of the side beams. A top plate is provided on top of the side beams. Connecting ribs are welded and fixed at the corners between the top plate and the side beams. The bottoms of the connecting ribs are welded to the side beam flanges arranged on the vertical upper end surfaces of the side beam webs. The connecting ribs support the box girder top plate and improve the connection strength at the ends of the crossbeams.

[0011] Furthermore, the transverse distance between two adjacent box beams is D, the transverse outer extension length of the two connecting parts of the two adjacent box beams is L, and L>1.05D. The minimum installation distance of the transverse outer extension length of the connecting part is limited to ensure strength.

[0012] Furthermore, a cantilever mechanism is provided at the corner position of the two outermost side beams and the top plate, and the cantilever mechanism includes a connecting vertical rod fixed to the lower end surface of the top plate, a horizontal rod placed longitudinally fixed at the middle of the connecting vertical rod, vertical support rods arranged longitudinally at intervals on the horizontal rod, and an inclined rod fixed to the other end of the connecting vertical rod, one end of the inclined rod abuts against the side beam, and the other end is fixed to the bottom of the vertical support rod, and an adjustment component is provided on the top of the vertical support rod, and a support platform is provided above the adjustment component, and a connecting rod is placed on the support platform, and a board surface is laid on the connecting rod, and the adjustment mechanism drives the support platform to move vertically until the upper surface of the board surface matches the shape of the lower surface of the bridge deck after casting. The cantilever mechanism can adapt to the various shapes of the outer side of the bridge deck, and the adjustment component can realize the shape of the upper side.

[0013] Furthermore, the middle portion of the adjustment rod is threadedly connected to an adjustment block, the lower end surface of the adjustment block abuts against the top end surface of the vertical support rod, wherein the portion of the adjustment rod below the adjustment block is inserted into the top of the vertical support rod, and the support platform is fixedly mounted on the top of the adjustment rod, and the adjustment block is rotated to drive the adjustment rod and the support platform to move vertically. The specific adjustment mechanism drives the adjustment rod through threads to achieve vertical height adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 for Figure 1 A partial enlarged view of part A of the box;

[0016] Figure 3 It is a three-dimensional diagram between two box beams of the present invention;

[0017] Figure 4 for Figure 1 A partial enlarged view of part B of box;

[0018] Figure 5 for Figure 4 A partial enlarged view of the boxed part.

[0019] Diagram: 1. Box girder; 1.1. Top plate; 1.2. Side beam; 2. Cross beam; 2.1. Cross beam web; 2.1.1. Cross beam flange; 2.1.2. Connecting part; 2.1.3. Connecting rib; 2.1.4. Reinforcement rib; 3. Side beam web; 3.1. Side beam flange; 3.2. Connecting part; 4. Cantilever mechanism; 4.1. Connecting vertical rod; 4.2. Horizontal rod; 4.3. Vertical support rod; 4.4. Tilt rod; 4.5. Support platform; 4.6. Adjustment assembly; 4.6.1. Adjustment rod; 4.6.2. Adjustment block; 4.7.1. Connecting rod; 4.7.2. Plate surface. DETAILED DESCRIPTION

[0020] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components set forth in the following description or illustrated in the following figures. The present invention is capable of other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and variations thereof herein is intended to cover the items and their equivalents set forth below, as well as additional items. Unless otherwise specified or limited, the terms "mount", "connect", "support" and "couple" and variations thereof are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings.

[0021] Furthermore, on the first hand, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0022] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

[0023] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0024] Please refer to Figure 1 、 Figure 2 An elevated bridge deck structure includes four box girders 1 spaced laterally apart. The two outermost box girders 1 have side beam webs 3 mounted on their inner sides, while the remaining box girders 1 have side beam webs 3 mounted on both their inner and outer sides. A crossbeam 2 disposed between two box girders 1 is connected to adjacent box girders 1 via the side beam webs 3.

[0025] The vertical ends of the side beam web 3 protrude longitudinally to form side beam flanges 3.1. One transverse end of the side beam web 3 is welded to the box beam 1, and the other end extends transversely to form a connecting portion 3.2. The crossbeam 2 includes a crossbeam web 2.1, the transverse end spacing of which matches the extended end spacing of the connecting portion 3.2 on the adjacent side beam web 3 and is welded to each other. The vertical ends of the crossbeam web 2.1 protrude longitudinally to form crossbeam flanges 2.1.1, and the transverse ends of the crossbeam flanges 2.1.1 extend outward to form splices 2.1.2. The design of the splices 2.1.2 and the connecting portion 3.2 ensures vertical and transverse matching, enhancing the strength and stability of the overall connection.

[0026] Four reinforcing ribs are welded transversely along the upper edge of the cross beam web 2.1. The vertical ends of each reinforcing rib are respectively welded and fixed to the side beam flange portion 3.1 of the cross beam web 2.1 to enhance the overall rigidity.

[0027] The box girder 1 is composed of two side beams 1.2, located on the inner and outer sides. The side beam webs 3 are mounted on the outer side walls. A top plate 1.1 is placed on top of the side beams 1.2, and connecting ribs 2.1 and 2.3 are welded and fixed. The lateral spacing between adjacent box beams 1 is D, and the lateral outward extension length L of the connecting portion 3.2 is greater than 1.05D.

[0028] At the corners between the two outermost side beams 1.2 and the top plate 1.1, a cantilever adjustment mechanism is installed. This mechanism consists of a connecting vertical rod 4.1 fixed to the lower end of the top plate 1.1. A horizontal rod 4.2 is mounted in the middle of the connecting vertical rod 4.1, running longitudinally. Vertical support rods 4.3 are arranged at intervals above the horizontal rod 4.2. The other end of the connecting vertical rod 4.1 is connected to a tilting rod 4.4. One end of the tilting rod 4.4 abuts against the side beam 1.2, and the other end connects to the bottom of the vertical support rod 4.3, forming a stable triangular support system.

[0029] Adjustment assembly 4.6, located atop vertical support rod 4.3, is attached to support platform 4.5. Connecting rod 4.7.1 rests on support platform 4.5, upon which decking 4.7.2 is laid. Adjustment assembly 4.6 drives support platform 4.5 vertically, allowing its upper surface to precisely conform to the shape of the lower surface of the cast elevated bridge deck, achieving highly precise bridge deck construction.

[0030] The adjustment assembly 4.6 includes an adjustment rod 4.6.1. An adjustment block 4.6.2 is threadedly connected to the middle portion of the adjustment rod 4.6.1. The lower end of the adjustment block 4.6.2 abuts against the top end of the vertical support rod 4.3. The portion of the adjustment rod 4.6.1 below the adjustment block 4.6.2 is inserted into the top of the vertical support rod 4.3. The support platform 4.5 is welded to the top of the adjustment rod 4.6.1. Rotating the adjustment block 4.6.2 achieves vertical movement of the adjustment rod 4.6.1, thereby driving the support platform 4.5 and its connecting rod 4.7.1 and plate surface 4.7.2 for accurate position adjustment.

[0031] The above description is merely a description of the preferred embodiment of the present invention and should not be construed as limiting the claims. The present invention is not limited to the above embodiment, and variations in its specific structure are permitted. All variations within the scope of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. An elevated bridge deck structure, characterized in that: The invention comprises at least two box beams (1) arranged at intervals in the transverse direction and a cross beam (2) arranged between the two box beams (1), wherein the inner sides of the two box beams (1) located at the transverse outermost ends are provided with side beam webs (3), and the inner and outer sides of the remaining box beams (1) are provided with side beam webs (3), and the two ends of the cross beam (2) are connected to the two adjacent box beams (1) through the side beam webs (3); Both vertical ends of the side beam web (3) are convex along both longitudinal sides to form side beam flange portions (3.1); one transverse end of the side beam web (3) is welded and fixed to the box beam (1), while the other end extends transversely outward to form a connecting portion (3.2); and the cross beam (2) includes a cross beam web (2.1); The spacing between the two transverse end faces of the crossbeam web (2.1) matches the spacing between the extended end faces of the connecting portions (3.2) on the two adjacent side beam webs (3), and the beams are welded to each other. The two vertical ends of the crossbeam web (2.1) are both raised along the longitudinal sides to form crossbeam flanges (2.1.1). The transverse ends of the crossbeam flanges (2.1.1) extend outward to form plug-in portions (2.1.2). The vertical spacing between the two vertically adjacent plug-in portions (2.1.2) matches the spacing between the two vertical end faces of the connecting portion (3.2), and the beams are welded to each other. The transverse spacing between the two transversely adjacent plug-in portions (2.1.2) matches the transverse spacing between the two transversely adjacent side beam flanges (3.1), and the beams are welded to each other.

2. The elevated bridge deck structure according to claim 1, characterized in that: A plurality of reinforcing ribs (2.1.4) are welded at intervals along the transverse direction of the crossbeam web (2.1), and the vertical ends of the reinforcing ribs (2.1.4) are respectively welded and fixed to two side beam flanges (3.1) located at the vertical ends of the crossbeam web (2.1).

3. The elevated bridge deck structure according to claim 1, characterized in that: The box beam (1) comprises two side beams (1.2) arranged on both inner and outer sides in a transverse direction; the side beam webs (3) are mounted on the outer side walls of the side beams (1.2); a top plate (1.1) is arranged on the top of the side beams (1.2); connecting ribs (2.1.3) are welded and fixed at the corners between the top plate (1.1) and the side beams (1.2); and the bottoms of the connecting ribs (2.1.3) are welded and connected to side beam flanges (3.1) arranged on the vertical upper end faces of the side beam webs (3).

4. The elevated bridge deck structure according to claim 3, characterized in that: The transverse distance between two adjacent box beams (1) is D, and the transverse outer extension length of the two connecting portions (3.2) of the two adjacent box beams (1) is L, and L>1.05D.

5. The elevated bridge deck structure according to claim 3, characterized in that: A cantilever mechanism (4) is provided at the corner position between the two outermost side beams (1.2) and the top plate (1.1), the cantilever mechanism (4) comprising a connecting vertical rod (4.1) fixed to the lower end surface of the top plate (1.1), a horizontal rod (4.2) placed in the longitudinal direction fixed at the middle of the connecting vertical rod (4.1), vertical support rods (4.3) arranged at intervals in the longitudinal direction on the horizontal rod (4.2), an inclined rod (4.4) fixed to the other end of the connecting vertical rod (4.1), one end of the inclined rod (4.4) being connected to the side beam (1.2), and the other end is fixed to the bottom of the vertical support rod (4.3); an adjustment component (4.6) is provided on the top of the vertical support rod (4.3); a support platform (4.5) is provided above the adjustment component (4.6); a connecting rod (4.7.1) is placed on the support platform (4.5); a slab (4.7.2) is laid on the connecting rod (4.7.1); the adjustment component drives the support platform (4.5) to move vertically until the upper surface of the slab (4.7.2) matches the shape of the lower surface of the bridge deck after casting.

6. The elevated bridge deck structure according to claim 5, characterized in that: The adjustment assembly (4.6) includes an adjustment rod (4.6.1), the middle part of the adjustment rod (4.6.1) is threadedly connected to an adjustment block (4.6.2), the lower end surface of the adjustment block (4.6.2) is against the top end surface of the vertical support rod (4.3), wherein the part of the adjustment rod (4.6.1) located below the adjustment block (4.6.2) is inserted into the vertical support rod (4.3), and the support platform (4.5) is fixedly installed on the top of the adjustment rod (4.6.1), and the adjustment rod (4.6.1) and the support platform (4.5) are driven to move vertically by rotating the adjustment block (4.6.2).

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