A longitudinal and transverse beam connection structure and construction method for a closely spaced longitudinal beam system

Abstract

This invention discloses a longitudinal and transverse beam connection structure and construction method for a closely spaced longitudinal beam system, relating to the field of orthotropic steel bridge deck design technology. The closely spaced longitudinal beam system includes multiple node transverse and longitudinal beams arranged in a grid pattern to form a beam structure. The longitudinal and transverse beam connection structure includes: a cross joint disposed on the web of the node transverse beam, with the interface of the cross joint connected to the longitudinal beam; and inter-segment transverse ribs disposed between the node transverse beams. The beneficial effects of this invention are: by using the longitudinal beams, node transverse beams, and cross joints, the disconnection points of the node transverse beams are welded to the longitudinal beams, avoiding the need for elongated holes in the web of the transverse beams, maintaining the rigidity of the transverse beam webs, improving resistance to out-of-plane deformation, and reducing the risk of fatigue defects. Furthermore, the prefabrication of the cross joints on the web of the transverse beams allows the longitudinal beams and node transverse beams to be connected through the pre-welded cross joints on the web of the node transverse beams, avoiding the out-of-plane effect of the longitudinal beam axial force on the web of the node transverse beams when the longitudinal beams are misaligned during on-site construction.

Description

Technical Field

[0001] This invention relates to the field of orthotropic steel bridge deck design technology, specifically to a longitudinal and transverse beam connection structure and construction method for a closely spaced longitudinal beam system. Background Technology

[0002] Orthotropic steel bridge decks are a structural form in the field of bridge design. The self-weight of this deck is about 1 / 2 to 1 / 3 of that of reinforced concrete bridge decks or precast prestressed concrete bridge decks. Therefore, orthotropic steel bridge decks are a very advantageous structural form for long-span bridges that are greatly affected by their self-weight.

[0003] Traditionally, the longitudinal beams were connected by passing through the webs of the transverse beams and ribs, and then welding to the webs of the transverse beam ribs. Under long-term vehicle loads, this connection method easily caused the webs of the transverse beams to repeatedly bend outwards to both sides, leading to weld fatigue failure. In addition, the traditional connection method required openings in the webs of the transverse beams for the bottom plates of the longitudinal beams. During installation, the bottom plates of the longitudinal beams needed to be inserted through the first web of the transverse beams and then through the webs of the subsequent transverse beams, which was quite difficult to construct. Moreover, the traditional method of connecting longitudinal and transverse beams by passing through the webs of the longitudinal beams required creating long holes in the webs of the transverse beams and ribs, which reduced the stiffness of the webs of the transverse beams and decreased their resistance to out-of-plane deformation, making them prone to fatigue failure. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a longitudinal and transverse beam connection structure and construction method for a closely spaced beam system.

[0005] In a first aspect, the present invention provides a longitudinal and transverse beam connection structure for a closely spaced longitudinal beam system, the closely spaced longitudinal beam system comprising multiple nodal transverse and longitudinal beams arranged in a grid pattern to form a beam body mechanism, the longitudinal and transverse beam connection structure comprising:

[0006] A cross joint is provided on the web of the node beam, and the interface of the cross joint is connected to the longitudinal beam.

[0007] Inter-segment transverse ribs are disposed between the node crossbeams, and the inter-segment transverse ribs are parallel to the node crossbeams;

[0008] The upper and lower longitudinal stiffening ribs are both vertically arranged on the longitudinal beam, and the upper and lower longitudinal stiffening ribs are connected to the node crossbeam.

[0009] Furthermore, the web of the intersegmental transverse rib has an opening, the upper longitudinal stiffening rib is disposed inside the opening, and the lower longitudinal stiffening rib is connected to the lower end face of the intersegmental transverse rib.

[0010] Furthermore, the upper end face of the beam structure is provided with an orthotropic steel bridge deck, and the inter-segment transverse ribs and beam structure are connected to the orthotropic steel bridge deck.

[0011] Furthermore, the lower end face of the orthotropic steel bridge deck is provided with multiple U-ribs, which are located inside the beam structure.

[0012] Furthermore, a main truss node is threadedly connected to one side of the node beam.

[0013] A construction method for a closely spaced longitudinal beam system, the system comprising multiple nodal crossbeams and longitudinal beams arranged in a grid pattern to form a beam structure, the method comprising the following steps:

[0014] The cross joint is prefabricated on the node beam and then welded to the longitudinal beam.

[0015] The inter-joint transverse ribs are applied parallel to the node transverse beams between multiple node transverse beams;

[0016] The upper and lower longitudinal stiffening ribs are applied vertically to the longitudinal beams and welded to the node beams.

[0017] Furthermore, an opening is made in the web of the intersegmental transverse rib, the upper longitudinal stiffening rib passes through the opening of the intersegmental transverse rib, and the lower longitudinal stiffening rib is applied below the intersegmental transverse rib and welded to the intersegmental transverse rib.

[0018] Furthermore, orthotropic steel bridge decks are installed on the beam structure, and the orthotropic steel bridge decks are welded to the inter-segment transverse ribs.

[0019] Furthermore, multiple U-ribs are installed on the orthotropic steel bridge deck, and the U-ribs extend into the beam structure.

[0020] Furthermore, the main truss node is threaded onto one side of the node beam.

[0021] Compared with the prior art, the advantages of the present invention are as follows: By using longitudinal beams, node crossbeams, and cross joints, the node crossbeams are welded to the longitudinal beams at the break points, avoiding the need for long holes in the web of the crossbeams, maintaining the rigidity of the web of the crossbeams, improving the resistance to out-of-plane deformation, and reducing the risk of fatigue damage. Furthermore, the cross joints on the web of the crossbeams are prefabricated, allowing the longitudinal beams and node crossbeams to be connected through the pre-welded cross joints on the web of the node crossbeams. This avoids the out-of-plane effect of the longitudinal beam axial force on the web of the node crossbeams when the longitudinal beams are misaligned during on-site construction. Moreover, by using the inter-segment transverse ribs, the web of the inter-segment transverse ribs is divided into three sections for welding, avoiding the problem of the longitudinal beam stiffening ribs being inserted later, and reducing the difficulty of construction. Attached Figure Description

[0022] Figure 1 This is a longitudinal schematic diagram of the bridge of the present invention.

[0023] Figure 2 This is a transverse schematic diagram of the bridge of the present invention.

[0024] Figure 3 This is a transverse schematic diagram of the bridge of the present invention.

[0025] Figure 4 This is a schematic diagram of the bridge in this invention.

[0026] In the picture:

[0027] 1. Node beam;

[0028] 2. Longitudinal beams;

[0029] 3. Upper longitudinal stiffening ribs;

[0030] 4. Lower layer longitudinal stiffening ribs;

[0031] 5. Cross joint;

[0032] 6. Intersegmental transverse ribs;

[0033] 7. Orthotropic steel bridge deck;

[0034] 8. U-rib;

[0035] 9. Main Truss Node. Detailed Implementation

[0036] Referring now to specific embodiments of the invention, examples of which are illustrated in the accompanying drawings. Although the invention will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. Rather, it is intended to cover variations, modifications, and equivalents included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described herein can be implemented by any functional block or functional arrangement, and any functional block or functional arrangement can be implemented as a physical entity or a logical entity, or a combination of both.

[0037] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Note: The examples described below are merely specific examples and are not intended to limit the embodiments of the present invention to the specific steps, values, conditions, data, order, etc. Those skilled in the art can utilize the concept of the present invention to construct more embodiments not mentioned herein by reading this specification.

[0039] Traditionally, the longitudinal beams were connected by passing through the webs of the transverse beams and ribs, and then welding to the webs of the transverse beam ribs. Under long-term vehicle loads, this connection method easily caused the webs of the transverse beams to repeatedly bend outwards to both sides, leading to weld fatigue failure. In addition, the traditional connection method required openings in the webs of the transverse beams for the bottom plates of the longitudinal beams. During installation, the bottom plates of the longitudinal beams needed to be inserted through the first web of the transverse beams and then through the webs of the subsequent transverse beams, which was quite difficult to construct. Moreover, the traditional method of connecting longitudinal and transverse beams by passing through the webs of the longitudinal beams required creating long holes in the webs of the transverse beams and ribs, which reduced the stiffness of the webs of the transverse beams and decreased their resistance to out-of-plane deformation, making them prone to fatigue failure.

[0040] To address the problems associated with the aforementioned closely spaced beam system, this invention proposes a longitudinal and transverse beam connection structure and construction method for such a system. In this embodiment, please refer to... Figure 1-4 The dense longitudinal beam system includes multiple node beams 1 and longitudinal beams 2 arranged in a grid pattern to form a beam structure. The connection structure between the longitudinal and transverse beams includes: a cross joint 5, which is set on the web of the node beam 1 and the interface of the cross joint 5 is connected to the longitudinal beam 2; inter-segment transverse ribs 6, which are set between the node beams 1 and are parallel to the node beams 1; upper longitudinal stiffening ribs 3 and lower longitudinal stiffening ribs 4, which are both vertically set on the longitudinal beams 2 and are connected to the node beams 1.

[0041] In this application, a longitudinal beam 2 passes through two node crossbeams 1 longitudinally, and multiple inter-segment cross ribs 6 are provided between the node crossbeams 1. The inter-segment cross ribs 6 are welded to the web of the longitudinal beam 2.

[0042] The cross joint 5 is prefabricated on the node beam 1. The longitudinal beam 2 is connected to the node beam 1 through the cross joint 5, so that it is not necessary to drill holes in the web of the node beam 1, thus ensuring the rigidity of the node beam 1.

[0043] The inter-segment transverse rib 6 is welded in three sections during the welding process, which avoids the stiffening rib of the longitudinal beam 2 being passed through later. The upper longitudinal stiffening rib 3 and the lower longitudinal stiffening rib 4 are set on the inter-segment transverse rib 6 to ensure the stability between the inter-segment transverse ribs 6.

[0044] The node beam 1, longitudinal beam 2, and inter-node transverse rib 6 form a grid.

[0045] In this embodiment, the web of the intersegmental transverse rib 6 has an opening, the upper longitudinal stiffening rib 3 is disposed inside the opening, and the lower longitudinal stiffening rib 4 is connected to the lower end face of the intersegmental transverse rib 6.

[0046] In this application, the web of the intersegmental transverse rib 6 has an opening, so that the upper longitudinal stiffening rib 3 can pass through the opening during the connection with the intersegmental transverse rib 6. After passing through, the intersegmental transverse rib 6 is welded to the upper longitudinal stiffening rib 3 to ensure the stability between the intersegmental transverse rib 6 and the upper longitudinal stiffening rib 3.

[0047] The lower longitudinal stiffening rib 4 is welded to the lower end face of the inter-segment transverse rib 6, thereby forming a base plate and making the beam structure of the resulting grid system more stable.

[0048] In this embodiment, the upper end face of the beam structure is provided with an orthotropic steel bridge deck 7, and the inter-segment transverse ribs 6 and the beam structure are connected to the orthotropic steel bridge deck 7.

[0049] In this application, after the orthotropic steel bridge deck 7 is installed on the beam structure, it is welded to the beam structure and the inter-segment transverse ribs 6, thereby ensuring that the beam structure can subsequently support the orthotropic steel bridge deck 7. During the support process, the orthotropic steel bridge deck 7 is subjected to uniform stress, ensuring service durability, and improving the out-of-plane deformation resistance of the beam structure connection nodes, making it less prone to fatigue damage.

[0050] In this embodiment, a plurality of U-ribs 8 are provided on the lower end face of the orthotropic steel bridge deck 7, and the U-ribs 8 are located inside the beam structure.

[0051] In this application, the U-rib 8 is prefabricated on the orthotropic steel bridge deck 7, which facilitates the subsequent welding of the orthotropic steel bridge deck 7 to the beam structure. Furthermore, since the U-rib 8 can provide greater torsional stiffness and bending stiffness, it can improve the stress state of the entire bridge deck.

[0052] In this embodiment, the main truss node 9 is threadedly connected to one side of the node beam 1;

[0053] In this application, the beam structure is connected to the main truss node 9 by bolts. The main truss node 9 is set on other structures, thereby ensuring that the overall beam structure and the orthotropic steel bridge deck 7 can be set on the device to be installed.

[0054] Meanwhile, some steps can be processed in the factory, which reduces the difficulty of construction, improves the accuracy of construction, and reduces the cost of later maintenance.

[0055] In this embodiment, the construction method of the closely spaced longitudinal beam system includes multiple node crossbeams 1 and longitudinal beams 2 arranged in a grid pattern to form a beam structure. The method includes the following steps: prefabricating cross joints 5 on the node crossbeams 1 and welding the cross joints 5 to the longitudinal beams 2; applying inter-segment cross ribs 6 parallel to the node crossbeams 1 between the multiple node crossbeams 1; and applying upper longitudinal stiffening ribs 3 and lower longitudinal stiffening ribs 4 vertically on the longitudinal beams 2 and welding the upper longitudinal stiffening ribs 3 and lower longitudinal stiffening ribs 4 to the node crossbeams 1.

[0056] An opening is made in the web of the intersegmental transverse rib 6, the upper longitudinal stiffening rib 3 is passed through the opening of the intersegmental transverse rib 6, and the lower longitudinal stiffening rib 4 is applied below the intersegmental transverse rib 6 and welded to the intersegmental transverse rib 6.

[0057] An orthotropic steel bridge deck 7 is installed on the beam structure, and the orthotropic steel bridge deck 7 is welded to the inter-segment transverse ribs 6.

[0058] Multiple U-ribs 8 are provided on the orthotropic steel bridge deck 7, and the U-ribs 8 extend into the beam structure.

[0059] Connect one side of the node beam 1 to the main truss node 9 via thread;

[0060] The steps implemented in this application are as follows:

[0061] When constructing the orthotropic steel bridge deck 7, first weld the U-ribs 8 onto the orthotropic steel bridge deck 7.

[0062] The node beam 1 is divided into 3 connected sections. First, the web of the node beam 1 is welded on the orthotropic steel bridge deck 7. Second, the node beam 1 is bolted to the main truss node 9. Finally, the cross joint 5 that connects to the longitudinal beam 2 is welded on the web of the node beam 1.

[0063] Assemble and weld the cross joints 5 on the web of the longitudinal beam 2 and the node crossbeam 1, while simultaneously welding the longitudinal beam 2 to the orthotropic steel bridge deck 7.

[0064] Upper longitudinal stiffening ribs 3 are welded to the web of the longitudinal beam 2, and the longitudinal stiffening ribs are welded to the web of the node beam 1.

[0065] Weld the lower longitudinal stiffening rib 4 and the joint connecting the stiffening rib to the bottom plate of the inter-segment transverse rib 6 on the web of the longitudinal beam 2.

[0066] The web of the inter-segment transverse rib 6 is welded in three sections. First, the web of the inter-segment transverse rib 6 closest to the longitudinal beam 2 is welded. Second, the opening of the web of the inter-segment transverse rib 6 is matched with the upper longitudinal stiffening rib 3 of the longitudinal beam 2 and welded. Finally, the remaining part of the web of the inter-segment transverse rib 6 is welded.

[0067] A bottom plate is welded onto the web of the inter-segmental transverse rib 6, and then the bottom plate is matched and welded to the bottom plate of the lower longitudinal stiffening rib 4.

[0068] A joint is welded to the web of node beam 1 and then welded to the beam.

[0069] Weld the bottom plate of longitudinal beam 2 and weld it to the joint of the bottom plate of node cross beam 1.

[0070] When using this invention, firstly, the required components are prefabricated. The U-rib 8 is prefabricated on the orthotropic steel bridge deck 7, and the cross joint 5 is prefabricated on the node crossbeam 1. Then, the longitudinal beam 2 and the node crossbeam 1 are connected (welded) through the prefabricated cross joint 5. Then, the upper longitudinal stiffening rib 3 and the lower longitudinal stiffening rib 4 are welded on the longitudinal beam 2. After the upper longitudinal stiffening rib 3 is opened through the inter-segment cross rib 6, it is welded to the inter-segment cross rib 6. The upper longitudinal stiffening rib 3 is connected (welded) through the bottom plate of the inter-segment cross rib 6, thereby forming multiple grids.

[0071] Then, the orthotropic steel bridge deck 7 is placed on the beam structure and the inter-segment transverse ribs 6, and connected (welded) to the beam structure and the inter-segment transverse ribs 6 to complete the installation.

[0072] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0073] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0074] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

Claims

1. A longitudinal beam connection structure for a closely spaced beam system, the closely spaced beam system comprising multiple nodal beams (1) and longitudinal beams (2) arranged in a grid pattern to form a beam structure, characterized in that, The longitudinal and transverse beam connection structure includes: A cross joint (5) is pre-welded to the web of the node beam (1), and the interface of the cross joint (5) is welded to the longitudinal beam (2). Inter-segment transverse ribs (6) are disposed between the node crossbeams (1), and the inter-segment transverse ribs (6) are parallel to the node crossbeams (1); The upper longitudinal stiffening rib (3) and the lower longitudinal stiffening rib (4) are both vertically arranged on the longitudinal beam (2), and the upper longitudinal stiffening rib (3) and the lower longitudinal stiffening rib (4) are connected to the node crossbeam (1); The web of the intersegmental transverse rib (6) has an opening, the upper longitudinal stiffening rib (3) is disposed inside the opening, and the lower longitudinal stiffening rib (4) is connected to the lower end face of the intersegmental transverse rib (6). The web of the inter-segment transverse rib (6) is welded in three sections. First, the web of the inter-segment transverse rib (6) close to the longitudinal beam (2) is welded. Then, the opening of the inter-segment transverse rib (6) is matched and welded with the longitudinal stiffening rib (3) on the upper layer of the longitudinal beam (2). Finally, the remaining part of the web of the inter-segment transverse rib (6) is welded.

2. The longitudinal and transverse beam connection structure of a closely spaced beam system as described in claim 1, characterized in that, The upper end face of the beam structure is provided with an orthotropic steel bridge deck (7), and the inter-segment transverse ribs (6) and the beam structure are connected to the orthotropic steel bridge deck (7).

3. The longitudinal and transverse beam connection structure of a closely spaced beam system as described in claim 2, characterized in that, The lower end face of the orthotropic steel bridge deck (7) is provided with multiple U-ribs (8), which are located inside the beam structure.

4. The longitudinal and transverse beam connection structure of a closely spaced beam system as described in claim 1, characterized in that, The node beam (1) is threadedly connected to the main truss node (9) on one side.

5. A construction method for a closely spaced longitudinal beam system, the closely spaced longitudinal beam system comprising multiple nodal crossbeams (1) and longitudinal beams (2) arranged in a grid pattern to form a beam structure, characterized in that, The method includes the following steps: The cross joint (5) is prefabricated on the node beam (1), and the cross joint (5) is welded to the longitudinal beam (2); The inter-joint transverse ribs (6) are applied parallel to the node transverse beams (1) between multiple node transverse beams (1); The upper longitudinal stiffening rib (3) and the lower longitudinal stiffening rib (4) are applied vertically to the longitudinal beam (2), and the upper longitudinal stiffening rib (3) and the lower longitudinal stiffening rib (4) are welded to the node beam (1). An opening is made in the web of the intersegmental transverse rib (6), the upper longitudinal stiffening rib (3) is passed through the opening of the intersegmental transverse rib (6), and the lower longitudinal stiffening rib (4) is applied below the intersegmental transverse rib (6) and welded to the intersegmental transverse rib (6). The web of the inter-segment transverse rib (6) is welded in three sections. First, the web of the inter-segment transverse rib (6) close to the longitudinal beam (2) is welded. Then, the opening of the inter-segment transverse rib (6) is matched and welded with the longitudinal stiffening rib (3) on the upper layer of the longitudinal beam (2). Finally, the remaining part of the web of the inter-segment transverse rib (6) is welded.

6. The construction method of a closely spaced longitudinal beam system as described in claim 5, characterized in that, An orthotropic steel bridge deck (7) is installed on the beam structure, and the orthotropic steel bridge deck (7) is welded to the inter-segment transverse rib (6).

7. The construction method of a closely spaced longitudinal beam system as described in claim 6, characterized in that, Multiple U-ribs (8) are provided on the orthotropic steel bridge deck (7), and the U-ribs (8) extend into the beam structure.

8. The construction method of a closely spaced longitudinal beam system as described in claim 5, characterized in that, Thread one side of the node beam (1) to the main truss node (9).

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