An assembled steel plate girder web construction site connecting structure

Abstract

The utility model discloses an assembly type steel plate beam web construction site connecting structure relates to assembly type steel plate beam site connecting technical field. Connecting structure includes steel plate beam, corrugated front splice plate, corrugated rear splice plate and high -strength bolt connection pair, and steel plate beam includes web front connecting end plate and web rear connecting end plate. Web front connecting end plate is connected with two corrugated front splice plates through a plurality of high -strength bolt connection pairs, and web rear connecting end plate is connected with two corrugated rear splice plates through a plurality of high -strength bolt connection pairs, and the corrugated front splice plate and the corrugated rear splice plate are connected and form an integrity through a plurality of high -strength bolt connection pairs. The structure guarantees the reliability of construction site connection through corrugated splice plate and high -strength bolt connection pair connection mode, avoids welding residual deformation and welding residual stress produced by the site welding simultaneously, can shorten construction period, saves the labor cost, improves construction efficiency and quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of on-site connection of prefabricated steel plate girder webs in bridge construction, and relates to a method for on-site connection structure of prefabricated steel plate girder webs. Background Technology

[0002] In the construction of prefabricated steel plate girder bridges, reliable on-site connection between web units of adjacent precast beam segments is the key to ensuring structural integrity, clear force transmission path and final load-bearing performance. Currently, the traditional connection methods mainly involve on-site welding and high-strength bolt connection.

[0003] On-site welding is highly dependent on the skill level of the on-site construction personnel and is constrained by the construction environment and working space. The construction process is complex and time-consuming, and the weld quality is difficult to meet factory manufacturing standards. Inevitably, residual welding stress and residual welding deformation will be generated at the joint. Residual welding stress will reduce the fatigue strength of the structure and increase the risk of fatigue crack initiation and propagation; residual welding deformation will affect the geometric accuracy of the components, increase the difficulty of subsequent installation, and lead to deviations in structural alignment.

[0004] Traditional high-strength bolt-connected splice plates use flat steel plate splice plates, which have a weak ability to transfer concentrated loads at the connection point and may cause local buckling instability.

[0005] Therefore, in order to address the problem of on-site connection of the web of prefabricated steel plate girder bridges, there is an urgent need for an efficient and convenient connection structure to reduce the defects of on-site connections and improve construction efficiency and quality. Utility Model Content

[0006] This utility model provides a prefabricated steel plate beam web connection structure for on-site construction. It uses high-strength bolts with corrugated connecting plates to form corrugated transverse stiffening ribs after connection, which helps to reduce defects in on-site connections, reduce welding time, and improve construction efficiency and quality.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A prefabricated steel plate girder web connection structure is disclosed on-site. The connection structure includes a steel plate girder, a corrugated front splice plate, a corrugated rear splice plate, and high-strength bolt connections. The steel plate girder includes a front connecting end plate and a rear connecting end plate. The front connecting end plate is connected to two corrugated front splice plates via several high-strength bolt connections. The rear connecting end plate is connected to two corrugated rear splice plates via several high-strength bolt connections. The corrugated front splice plate and the corrugated rear splice plate are connected as a single unit via several high-strength bolt connections.

[0009] Further defined, the corrugated front splicing plate and the corrugated rear splicing plate include a flat side and a corrugated side. The flat side is provided with a plurality of corrugated intervals and circular holes. The corrugated side is perpendicular to the flat side and corresponds one-to-one with the corrugated intervals on the flat side. The corrugated side is provided with a plurality of circular holes.

[0010] Further specified, the front connecting end plate of the web plate is provided with a number of corrugated intervals and circular holes, and the corrugated intervals and circular holes correspond one-to-one with the corrugated intervals and circular holes on the flat side of the corrugated front splicing plate.

[0011] Further specified, the rear connecting end plate of the web plate is provided with a number of corrugated intervals and circular holes, and the corrugated intervals and circular holes correspond one-to-one with the corrugated intervals and circular holes on the flat side of the corrugated rear splicing plate.

[0012] Furthermore, the corrugated intervals and circular holes on the corrugated side of the corrugated front splicing plate correspond one-to-one with the corrugated intervals and circular holes on the corrugated side of the corrugated rear splicing plate.

[0013] The beneficial effects of this utility model are: by using high-strength bolts with corrugated connecting plates, this utility model avoids the welding residual stress and welding residual deformation generated by on-site welding. After connection, corrugated transverse stiffening ribs are formed, which helps to improve the ability of the connection to transmit concentrated loads, reduce the risk of local buckling instability, and improve construction efficiency and quality. Attached Figure Description

[0014] Figure 1 This is a three-dimensional exploded view of the on-site connection structure of the web plate of the steel plate beam according to this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the on-site connection structure of the web plate of the steel plate beam of this utility model;

[0016] Figure 3 This is a front view of the on-site connection structure of the web of the steel plate beam according to this utility model;

[0017] Figure 4 This is a left view of the on-site connection structure of the web plate of the steel plate beam according to this utility model.

[0018] Markings in the diagram: 1 Steel plate beam, 1-1 Rear connecting end plate of web, 1-2 Front connecting end plate of web, 2 Corrugated rear splice plate, 3 Corrugated front splice plate, 4 High-strength bolt connection pair, 4-1 Bolts and washers, 4-2 Nuts and washers Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "left side," "right side," 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 purpose of facilitating the description of this utility model and enabling those skilled in the art to quickly understand the solution, rather than indicating that a specific component must have a specific orientation, or be constructed and operated in a specific positional relationship, and therefore should not be construed as a limitation of this utility model.

[0021] like Figure 1 As shown in the figure, as a specific embodiment of the present utility model, a prefabricated steel plate beam web construction site connection structure is disclosed, which can be used in bridges, civil engineering and other fields. The connection structure includes a steel plate beam 1, a corrugated rear splicing plate 2, a corrugated front splicing plate 3, and a high-strength bolt connection pair 4. The steel plate beam 1 includes a web rear connection end plate 1-1 and a web front connection end plate 1-2.

[0022] like Figure 1 As shown, the corrugated rear splicing plate 2 and the corrugated front splicing plate 3 include a flat side and a corrugated side. The flat side has several corrugated intervals and circular holes. The corrugated side is perpendicular to the flat side and corresponds one-to-one with the corrugated intervals on the flat side. The corrugated side has several circular holes. The flat side structure is to ensure a tight fit with the rear connecting end plate 1-1 and the front connecting end plate 1-2 of the web, ensuring a reliable connection between the splicing plate and the steel plate beam. The corrugated structure of the corrugated side and the front and rear connecting end plates of the web is to ensure that the steel plate beams on the left and right sides form a toothed structure that meshes with each other, reducing the risk that the connection point is only supported by the high-strength bolt connection pair 4 bearing the shear force, and allowing the web to participate in part of the shear force at the connection point.

[0023] like Figure 1 As shown, the rear connecting end plate 1-1 of the web plate has several corrugated intervals and circular holes, each corresponding to one of the corrugated intervals and circular holes on the flat side of the corrugated rear splicing plate 2. The front connecting end plate 1-2 of the web plate has several corrugated intervals and circular holes, each corresponding to one of the corrugated intervals and circular holes on the flat side of the corrugated front splicing plate 3, ensuring that the high-strength bolt connection pair 4 can smoothly pass through the corresponding circular holes.

[0024] like Figure 2 , 4As shown, the rear connecting end plate 1-1 of the web of the left steel plate beam 1 is connected and fixed to the rear connecting end plate 1-1 of the web by passing through a circular hole with high-strength bolts 4. The corrugated sides of the two corrugated rear splice plates 2 face outwards from the rear connecting end plate 1-1 of the web. Similarly, the front connecting end plate 1-2 of the web of the right steel plate beam 1 is connected and fixed to the front connecting end plate 1-2 of the web by passing through a circular hole with high-strength bolts 4. The corrugated sides of the two corrugated front splice plates 3 face outwards from the front connecting end plate 1-2 of the web. Pre-fixing the corrugated splice plates increases the contact area with the spliced ​​beam segment and improves construction efficiency.

[0025] like Figure 2 , 3 As shown, after the two corrugated rear splice plates 2 are connected to the rear connecting end plate 1-1 of the web of the left steel plate beam 1, they are temporarily matched with the two corrugated front splice plates 3 connected to the front connecting end plate 1-2 of the web of the right steel plate beam 2 through corresponding corrugated intervals. Finally, the construction site connection of the left and right steel plate beams is achieved by passing high-strength bolt connecting pairs 4 through the circular holes of the corresponding corrugated rear splice plates 2 and corrugated front splice plates 3.

[0026] In summary, this utility model has a simple structure and is used for on-site connection of the web of prefabricated steel plate beams. By using high-strength bolts with corrugated connecting plates, it avoids the residual stress and deformation caused by on-site welding. After connection, corrugated transverse stiffening ribs are formed, which helps to improve the ability of the connection to transfer concentrated loads, reduce the risk of local buckling instability, and improve construction efficiency and quality.

[0027] The preferred embodiments of the present invention have been described in detail above. For those skilled in the art, it should be understood that the present invention is not limited to the specific details in the above embodiments. Without departing from the core principles or basic technical features of the present invention, the present invention can be implemented in other specific forms, and such other specific forms are all within the protection scope of the present invention.

Claims

1. A prefabricated steel plate beam web connection structure for on-site construction, characterized in that: The connecting structure includes a steel plate beam, a corrugated front splice plate, a corrugated rear splice plate, and high-strength bolt connections. The steel plate beam includes a front connecting end plate and a rear connecting end plate. The front connecting end plate is connected to two corrugated front splice plates via several high-strength bolt connections. The rear connecting end plate is connected to two corrugated rear splice plates via several high-strength bolt connections. The corrugated front splice plate and the corrugated rear splice plate are connected as a single unit via several high-strength bolt connections.

2. The prefabricated steel plate beam web connection structure according to claim 1, characterized in that: The corrugated front splicing plate and the corrugated rear splicing plate include a flat side and a corrugated side. The flat side is provided with a plurality of corrugated intervals and circular holes. The corrugated side is perpendicular to the flat side and corresponds one-to-one with the corrugated intervals of the flat side. The corrugated side is provided with a plurality of circular holes.

3. The prefabricated steel plate beam web connection structure according to claim 1, characterized in that: The front connecting end plate of the web plate is provided with several corrugated intervals and circular holes, and the corrugated intervals and circular holes correspond one-to-one with the corrugated intervals and circular holes on the flat side of the corrugated front splicing plate.

4. The prefabricated steel plate beam web connection structure according to claim 1, characterized in that: The rear connecting end plate of the web plate is provided with several corrugated intervals and circular holes, and the corrugated intervals and circular holes correspond one-to-one with the corrugated intervals and circular holes on the flat side of the corrugated rear splicing plate.

5. The prefabricated steel plate beam web connection structure according to claim 2, characterized in that: The corrugated intervals and circular holes on the corrugated side of the corrugated rear splicing plate correspond one-to-one with the corrugated intervals and circular holes on the corrugated side of the corrugated rear splicing plate.

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