Continuous structure of simply supported girder bridge deck
By setting up a combined structure of positioning components, support steel plates, flexible parts and ultra-high performance concrete paving layers at the bridge deck continuous of the simply supported beam bridge, the problem of insufficient bearing capacity and deformation resistance of the bridge deck is solved, and higher bearing capacity and fatigue resistance are achieved, extending the service life of the bridge and improving driving comfort.
Patent Information
- Application Number
- CN202421543627.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-02
AI Technical Summary
The existing simply supported beam bridge bridge has weak load-bearing capacity and deformation resistance, and is prone to continuous concrete cracking of the bridge deck, warping of the bridge deck and bending of the bridge deck, affecting the durability and driving comfort of the bridge.
The combined structure is formed by providing positioning components, support steel plates, flexible parts and ultra-high performance concrete paving layers at the bridge deck continuous. The positioning parts are fixedly connected to the prefabricated main beam, the support steel plate is welded to the ribs, the flexible parts are slidingly matched with the positioning parts, and the ultra-high performance concrete paving layer is laid on the support steel plate.
Effectively resist concrete cracking and deformation problems under the action of vehicle loads, temperature loads and concrete shrinkage creep, improve the load-bearing capacity and fatigue resistance of the continuous structure of the bridge, extend the service life of the bridge and improve driving comfort.
Smart Images
Figure CN222935839U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge engineering design and construction, in particular to a continuous deck structure for simply supported beam bridges. Background Technique
[0002] The continuous deck structure is widely used in simply supported beam bridges and plays an important role in reducing the number of expansion joints and improving the driving comfort of bridges. The traditional continuous deck structure is mainly composed of cast-in-place concrete paving and unbonded steel bar tie rods, and its bearing capacity and anti-deformation ability are weak. The problem of cracking of the continuous deck concrete is likely to occur during the service period, affecting the structural durability. At the same time, under the action of temperature load, shrinkage and creep of concrete main beams, etc., the continuous deck is a weak position of the structure, and diseases such as warping of the deck slab and bending of steel bars may occur, affecting the normal use of the bridge. Content of the Utility Model
[0003] The utility model provides a continuous deck structure for simply supported beam bridges to solve the defect of weak bearing capacity and anti-deformation ability of the existing continuous deck structure. A combined structure is formed by a positioning component, a support steel plate, a flexible component and an ultra-high performance concrete paving layer, which can effectively resist the concrete cracking and deformation problems of the continuous deck structure of simply supported beam bridges under the action of vehicle loads, temperature loads, concrete shrinkage and creep, etc.
[0004] The continuous deck structure for simply supported beam bridges provided by the utility model is laid in the notch between the first precast main beam and the second precast main beam. The continuous deck structure for simply supported beam bridges includes:
[0005] A positioning component extending along the laying direction, one side of the positioning component is fixedly connected with the first precast main beam, and the other side is fixedly connected with the second precast main beam; a first rib plate is provided on the upper surface of the positioning component above the first precast main beam, and a second rib plate is provided on the upper surface of the positioning component above the second precast main beam;
[0006] A support steel plate, one side of which is welded to the first rib plate and the other side is welded to the second rib plate, and the support steel plate extends synchronously with the positioning component;
[0007] A flexible component fixed to the surface of the support steel plate facing the positioning component and slidably matched with the positioning component;
[0008] An ultra-high performance concrete paving layer is laid above the support steel plate and the positioning component.
[0009] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the positioning member includes a first positioning steel plate and a second positioning steel plate. The first positioning steel plate is disposed above the first precast main beam, and the second positioning steel plate is disposed above the second precast main beam. The first rib plate is disposed on the first positioning steel plate, and the second rib plate is disposed on the second positioning steel plate.
[0010] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the first positioning steel plate includes a first stress section and a first transition section. The first transition section is disposed at one end of the first stress section away from the second positioning steel plate, and the first rib plate is disposed between the first stress section and the first transition section;
[0011] The second positioning steel plate includes a second stress section and a second transition section. The second transition section is disposed at one end of the second stress section away from the first positioning steel plate, and the second rib plate is disposed between the second stress section and the second transition section.
[0012] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the positioning member further includes a first anchoring steel bar and a second anchoring steel bar. The first anchoring steel bar is disposed on the lower side of the first positioning steel plate and is embedded in the first precast main beam. The first anchoring steel bar is used to fix the first positioning steel plate; the second anchoring steel bar is disposed on the lower side of the second positioning steel plate and is embedded in the second precast main beam. The second anchoring steel bar is used to fix the second positioning steel plate.
[0013] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the first anchoring steel bar includes:
[0014] A first straight section, located on the lower side of the first stress section and fixedly connected to the first stress section;
[0015] A first inclined section, located at one end of the first straight section away from the second anchoring steel bar and arranged at a first preset angle with the first straight section. The opening of the first preset angle faces the first precast main beam;
[0016] A first bent section, located at one end of the first straight section facing the second anchoring steel bar and curled in a direction away from the second anchoring steel bar.
[0017] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the second anchoring steel bar includes:
[0018] A second straight section, located on the lower side of the second stress section and fixedly connected to the second stress section;
[0019] The second inclined section is located at one end of the second straight section away from the first anchoring steel bar and is arranged at a second preset angle with the second straight section, and the opening of the second preset angle faces the second precast main beam;
[0020] The second bending section is located at one end of the second straight section facing the first anchoring steel bar and is curled along the direction away from the first anchoring steel bar.
[0021] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the flexible member includes a rubber plate, and the rubber plate is attached to the surface of the support steel plate facing the positioning member and is in sliding fit with the positioning member.
[0022] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the ultra-high performance concrete paving layer includes a paving layer body, support shear studs and positioning shear studs. The paving layer body is laid above the support steel plate. One end of the support shear stud is embedded in the paving layer body, and the other end is fixedly connected to the support steel plate; one end of the positioning shear stud is embedded in the paving layer body, and the other end is fixedly connected to the positioning member.
[0023] According to the continuous deck structure of the simply supported beam bridge provided by the present utility model, the paving layer body includes an ultra-high performance concrete layer and a steel mesh, and the steel mesh is arranged in the ultra-high performance concrete layer along the width direction of the first precast main beam.
[0024] For the continuous deck structure of the simply supported beam bridge provided by the present utility model, by arranging positioning members above the first precast main beam and the second precast main beam, in this way, on the one hand, the positioning members can play a positioning role, and on the other hand, they can prevent the corners of the first precast main beam and the second precast main beam from being damaged and cracked during the construction process, and can play a role in protecting the first precast main beam, the second precast main beam and the adjacent wet joint concrete; in addition, by fixing the support steel plate with the first rib plate and the second rib plate, the damage caused by the high temperature during welding to the first precast main beam and the second precast main beam can be effectively reduced.
[0025] In addition, by arranging a flexible member between the supporting steel plate and the positioning member, the deformation problem of the continuous deck structure of the simply supported beam bridge under the action of vehicle loads can be effectively resisted through the deformation of the flexible member itself. Moreover, the flexible member is in sliding fit with the positioning member. Based on this, the horizontal displacement of the first precast main beam and the second precast main beam in the longitudinal bridge direction under the action of temperature loads, concrete shrinkage and creep, etc. can be released, which can greatly improve the deformation resistance ability of the continuous deck structure of the simply supported beam bridge and avoid the occurrence of diseases such as deck warping and steel bar bending. In addition, the combined structure of the supporting steel plate and the ultra-high performance concrete paving layer has good bearing capacity and fatigue resistance. Even under heavy loads and large traffic volumes, diseases such as concrete cracking at the continuous deck can be prevented, and the overall durability, safety and driving comfort of the bridge structure can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0027] Figure 1 FIG. 1 is one of the schematic diagrams of the laying position of the continuous deck structure of the simply supported beam bridge provided by the embodiment of the present invention.
[0028] Figure 2 FIG. 2 is another schematic diagram of the laying position of the continuous deck structure of the simply supported beam bridge provided by the embodiment of the present invention.
[0029] Figure 3 FIG. 3 is a cross-sectional schematic diagram of the continuous deck structure of the simply supported beam bridge provided by the embodiment of the present invention.
[0030] Figure 4 FIG. 4 is a partial detailed structure schematic diagram of the continuous deck structure of the simply supported beam bridge provided by the embodiment of the present invention.
[0031] Figure 5 FIG. 5 is a connection schematic diagram of the supporting steel plate and the first rib provided by the embodiment of the present invention.
[0032] Reference numerals:
[0033] 10: the first precast main beam; 20: the second precast main beam; 30: the continuous deck structure of the simply supported beam bridge;
[0034] 100: Positioning component; 110: First positioning steel plate; 111: First rib plate; 112: First stress section; 113: First transition section; 120: Second positioning steel plate; 121: Second rib plate; 122: Second stress section; 123: Second transition section; 130: First anchoring steel bar; 131: First straight section; 132: First inclined section; 133: First bending section; 140: Second anchoring steel bar; 141: Second straight section; 142: Second inclined section; 143: Second bending section;
[0035] 200: Support steel plate; 300: Flexible component; 400: Ultra-high performance concrete paving layer; 410: Paving layer body; 411: Ultra-high performance concrete layer; 412: Steel mesh; 420: Support shear studs; 430: Positioning shear studs. Detailed implementation manners
[0036] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0037] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.
[0038] In the embodiments of the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0039] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0040] Figure 1 is one of the schematic diagrams of the laying position of the continuous deck structure of a simply supported beam bridge provided by an embodiment of the present invention; Figure 2 is the second of the schematic diagrams of the laying position of the continuous deck structure of a simply supported beam bridge provided by an embodiment of the present invention.
[0041] Case 1: Refer to Figure 1 , in an embodiment of the present invention, a continuous deck structure 30 of a simply supported beam bridge is provided. The continuous deck structure 30 of the simply supported beam bridge is installed between any two adjacent precast main girders, that is, directly above the pier. For the convenience of explanation hereinafter, the two adjacent precast main girders along the driving direction are respectively named the first precast main girder 10 and the second precast main girder 20, that is, the first precast main girder 10 and the second precast main girder 20 are connected with their wide sides. Specifically, during construction, a notch can be dug between the first precast main girder 10 and the second precast main girder 20, and then the continuous deck structure 30 of the simply supported beam bridge provided by the embodiment of the present invention is laid in the notch.
[0042] Case 2: Refer to Figure 2 , in another alternative embodiment of the present invention, different from the foregoing embodiment, a continuous deck structure 30 of a simply supported beam bridge is provided. The continuous deck structure 30 of the simply supported beam bridge is installed between any two adjacent precast main girders. For the convenience of explanation hereinafter, the two adjacent precast main girders along the direction perpendicular to the driving direction are respectively named the first precast main girder 10 and the second precast main girder 20, that is, the first precast main girder 10 and the second precast main girder 20 are connected with their long sides. Specifically, during construction, a notch can be dug between the first precast main girder 10 and the second precast main girder 20, and then the continuous deck structure 30 of the simply supported beam bridge provided by the embodiment of the present invention is laid in the notch.
[0043] Referring to the foregoing, it should be noted that the first precast main girder 10 and the second precast main girder 20 are only schematic names given in this article for the convenience of description, and they are not specific limitations for any embodiment of the present utility model. It can be understood that the first precast main girder 10 and the second precast main girder 20 should be able to be used as the names of any two adjacent precast main girders. The layout methods of the simply supported beam bridge deck continuous structure 30 provided in the embodiments of the present utility model in Case 1 and Case 2 are similar. To avoid excessive elaboration, the layout method in Case 1 is selected in this article as an explanation. Those skilled in the art should be able to simply deduce the layout method in Case 2 based on this article.
[0044] Figure 3 is a cross-sectional view of the simply supported beam bridge deck continuous structure provided by the embodiment of the present utility model (the cross-section direction is Figure 1 the A direction in Figure 4 ;
[0045] Referring to Figure 3 and Figure 4 the simply supported beam bridge deck continuous structure 30 provided by the embodiment of the present utility model includes a positioning member 100, a support steel plate 200, a flexible member 300, and a ultra-high performance concrete paving layer 400. Among them, the positioning member 100 extends along the width direction of the first precast main girder 10. One side of the positioning member 100 is fixedly connected to the first precast main girder 10, and the other side is fixedly connected to the second precast main girder 20. The upper surface of the positioning member 100 located above the first precast main girder 10 is provided with a first rib plate 111, and the upper surface of the positioning member 100 located above the second precast main girder 20 is provided with a second rib plate 121. Both the first rib plate 111 and the second rib plate 121 extend synchronously with the positioning member 100.
[0046] Figure 5 is a connection diagram of the support steel plate and the first rib plate provided by the embodiment of the present utility model.
[0047] Referring to Figure 4 and Figure 5 the support steel plate 200 is arranged above the positioning member 100, spanning the first precast main girder 10, the second precast main girder 20, and the gap therebetween. One side of the support steel plate 200 is welded to the first rib plate 111, and the other side is welded to the second rib plate 121. Specifically, the form of fillet weld can be used. The support steel plate 200 extends synchronously with the positioning member 100. It can be understood that on the one hand, the support steel plate 200 can be used as the main load-bearing member of the simply supported beam bridge deck continuous structure 30, and on the other hand, it can also be used as a mold when pouring the ultra-high performance concrete paving layer 400.
[0048] The flexible member 300 is fixed to the side of the supporting steel plate 200 facing the positioning member 100. Specifically, the flexible member 300 can be attached to the supporting steel plate 200 by an adhesive when the supporting steel plate 200 is prefabricated. It should be noted that there is no connection relationship between the flexible member 300 and the positioning member 100, and they are in sliding fit, that is, the flexible member 300 can move relative to the positioning member 100.
[0049] The ultra-high performance concrete paving layer 400 is laid above the supporting steel plate 200. Refer to Figures 1 to 5 , it can be understood that for the simply supported beam bridge deck continuous structure 30 provided by the embodiment of the present invention, by arranging the positioning member 100 above the first precast main beam 10 and the second precast main beam 20, in this way, on the one hand, the positioning member 100 can play a positioning role, and on the other hand, it can prevent the corners of the first precast main beam 10 and the second precast main beam 20 from being damaged and cracked during the construction process, and can play a role in protecting the first precast main beam 10, the second precast main beam 20 and the adjacent wet joint concrete; in addition, by fixing the supporting steel plate 200 through the first rib plate 111 and the second rib plate 121, the damage caused by the high temperature during welding to the first precast main beam 10 and the second precast main beam 20 can be effectively reduced.
[0050] In addition, by arranging the flexible member 300 between the supporting steel plate 200 and the positioning member 100, in this way, the deformation problem of the simply supported beam bridge deck continuous structure 30 under the action of vehicle load can be effectively resisted through the deformation of the flexible member 300 itself; furthermore, the flexible member 300 and the positioning member 100 are in sliding fit, based on this, the horizontal displacement of the first precast main beam 10 and the second precast main beam 20 along the longitudinal bridge direction under the action of temperature load, concrete shrinkage and creep, etc. can be released, which can greatly improve the deformation resistance ability of the simply supported beam bridge deck continuous structure 30 and avoid the occurrence of diseases such as bridge deck warping and steel bar bending; in addition, the combined structure of the supporting steel plate 200 and the ultra-high performance concrete paving layer 400 has good bearing capacity and fatigue resistance performance. Even under heavy load and large traffic volume conditions, diseases such as concrete cracking at the bridge deck continuous part can be eliminated, and the durability, safety and driving comfort of the overall bridge structure can be improved.
[0051] Continue to refer to Figure 3 and Figure 4, in an alternative embodiment of the present utility model, the positioning member 100 includes a first positioning steel plate 110 and a second positioning steel plate 120. The first positioning steel plate 110 is located above the first precast main beam 10, and the second positioning steel plate 120 is located above the second precast main beam 20. The first rib plate 111 is provided on the first positioning steel plate 110, and the second rib plate 121 is provided on the second positioning steel plate 120. It can be understood that by providing the corresponding first positioning steel plate 110 and second positioning steel plate 120 for the first precast main beam 10 and the second precast main beam 20, on the one hand, it is beneficial to the manufacturing, processing and handling of the positioning member 100, and on the other hand, the first positioning steel plate 110 and the second positioning steel plate 120 can be directly installed corresponding to the first precast main beam 10 and the second precast main beam 20 during the precasting process of the main beam. That is to say, the first positioning steel plate 110 and the second positioning steel plate 120 can be correspondingly embedded on the first precast main beam 10 and the second precast main beam 20 during the precasting process. In this way, the construction efficiency can be improved and the construction period can be shortened. In addition, the first positioning steel plate 110 and the second positioning steel plate 120 can also play a role in protecting the first precast main beam 10, the second precast main beam 20 and the wet joint concrete during the construction process.
[0052] Continue to refer to Figure 4 , in an alternative embodiment of the present utility model, the first positioning steel plate 110 includes a first stress-bearing section 112 and a first transition section 113. The first transition section 113 is provided at one end of the first stress-bearing section 112 away from the second positioning steel plate 120, and the first rib plate 111 is provided between the first transition section 113 and the first stress-bearing end; similarly, the second positioning steel plate 120 includes a second stress-bearing section 122 and a second transition section 123. The second transition section 123 is provided at one end of the second stress-bearing end away from and lower than the first positioning steel plate 110, and the second rib plate 121 is provided between the second stress-bearing section 122 and the second transition section 123; It can be understood that the bearing capacity and anti-deformation ability of the ordinary concrete structure are weak. By setting the first transition section 113 and the second transition section 123 to extend the lengths of the first positioning steel plate 110 and the second positioning steel plate 120, on the one hand, the length of the bridge deck continuous structure can be extended, and on the other hand, the distance between the ordinary concrete layer and the stress concentration area (i.e., the bridge deck continuous part) can be enlarged, the stress borne by the ordinary concrete layer can be reduced, and problems such as cracking can be avoided.
[0053] Continue to refer to Figure 3, in an alternative embodiment of the present utility model, the positioning member 100 further includes a first anchor bar 130 and a second anchor bar 140. The first anchor bar 130 is disposed on the lower side of the first positioning steel plate 110 and is embedded in the interior of the first precast main beam 10. The first anchor bar 130 is used to fix the first positioning steel plate 110; the second anchor bar 140 is disposed on the lower side of the second positioning steel plate 120 and is embedded in the interior of the second precast main beam 20. The second anchor bar 140 is used to fix the second positioning steel plate 120. It can be understood that by providing the first anchor bar 130, the firmness and integrity between the first positioning steel plate 110 and the first precast main beam 10 can be improved, which is beneficial to the stress transfer between the first precast main beam 10 and the first positioning steel plate 110. Similarly, by providing the second anchor bar 140, the firmness and integrity between the second positioning steel plate 120 and the second precast main beam 20 can be improved, which is beneficial to the stress transfer between the second precast main beam 20 and the second positioning steel plate 120.
[0054] Continue to refer to Figure 3 , in an alternative embodiment of the present utility model, the first anchor bar 130 includes a first straight section 131, a first inclined section 132, and a first bent section 133. The first straight section 131 is located on the lower side of the first stress section 112 and is fixedly connected to the first stress section 112; the first inclined section 132 is located at one end of the first straight section 131 away from the second anchor bar 140 and is arranged at a first preset angle with the first straight section 131. The opening of the first preset angle faces the first precast main beam 10; the first bent section 133 is located at one end of the first straight section 131 facing the second anchor bar 140 and is curled in a direction away from the second anchor bar 140. It should be noted that the size of the first preset angle and the curling degree of the first bent section 133 can be adaptively set according to the actual situation to meet the actual use requirements.
[0055] It can be understood that by providing the first inclined section 132 and the first bent section 133, compared with the vertical embedding method, such a setting can change the direction and form of the stress transfer between the first anchor bar 130 and the first precast main beam 10, which can make the connection between the first anchor bar 130 and the first precast main beam 10 closer, improve the integrity between the first positioning steel plate 110 and the first precast main beam 10, and is beneficial to the stress transfer between the first precast main beam 10 and the first positioning steel plate 110.
[0056] Continue to refer to Figure 3, in an alternative embodiment of the present utility model, the second anchoring steel bar 140 includes a second straight section 141, a second inclined section 142, and a second bending section 143. The second straight section 141 is located on the lower side of the second stress-bearing section 122 and is fixedly connected to the second stress-bearing section 122. The second inclined section 142 is located at one end of the second straight section 141 away from the first anchoring steel bar 130 and is arranged at a second preset angle with respect to the second straight section 141. The opening of the second preset angle faces the second precast main girder 20. The second bending section 143 is located at one end of the second straight section 141 facing the first anchoring steel bar 130 and is curled in a direction away from the second anchoring steel bar 140. It should be noted that the magnitude of the second preset angle and the curling degree of the second bending section 143 can be adaptively set according to actual conditions to meet actual usage requirements.
[0057] It can be understood that by providing the second inclined section 142 and the second bending section 143, compared with the vertical embedding method, such a setting can change the direction and form of stress transfer between the second anchoring steel bar 140 and the second precast main girder 20, can make the connection between the second anchoring steel bar 140 and the second precast main girder 20 tighter, can improve the integrity of the second positioning steel plate 120 and the second precast main girder 20, and is beneficial to stress transfer between the second precast main girder 20 and the second positioning steel plate 120.
[0058] , in an alternative embodiment of the present utility model, the flexible member 300 includes a rubber plate. It can be understood that the rubber plate has good deformation ability. In this way, the deformation of the rubber plate itself can effectively resist the deformation of the bridge deck continuous structure under the action of vehicle loads. Moreover, the rubber plate is in sliding fit with the positioning member 100. Based on this, the horizontal displacement of the first precast main girder 10 and the second precast main girder 20 in the longitudinal bridge direction under the action of temperature loads, concrete shrinkage and creep, etc. can be released, which can greatly improve the deformation resistance ability of the simply supported beam bridge deck continuous structure 30 and can avoid the occurrence of diseases such as warping of the bridge deck and bending of steel bars.
[0059] Continue to refer to Figure 3 and Figure 4, in an alternative embodiment of the present utility model, the ultra-high performance concrete paving layer 400 includes a paving layer body 410, support shear studs 420, and positioning shear studs 430. The paving layer body 410 is disposed above the support steel plate 200. One end of the support shear stud 420 is embedded in the paving layer body 410, and the other end is fixedly connected to the support steel plate 200. One end of the positioning shear stud 430 is embedded in the paving layer body 410, and the other end is fixedly connected to the positioning member 100. It can be understood that by providing the support shear studs 420 and the positioning shear studs 430, the firmness of the connection between the positioning member 100, the support steel plate 200, and the ultra-high performance concrete paving layer 400 can be improved, which is beneficial to the stress transfer between them, enabling them to jointly form a load-bearing member, improving the overall mechanical performance of the structure, and enhancing the bearing capacity and fatigue resistance of the continuous structure 30 of the simply supported beam bridge deck.
[0060] Continue to refer to Figure 3 and Figure 4 , in an alternative embodiment of the present utility model, the paving layer body 410 includes an ultra-high performance concrete layer 411 and a steel mesh 412. The steel mesh 412 is arranged in the ultra-high performance concrete layer 411 along the width direction of the first precast main beam 10. During construction, the steel mesh 412 can be first laid above the positioning member 100 and the support steel plate 200, and then the ultra-high performance concrete layer 411 is poured. It can be understood that the steel mesh 412 can prevent the ultra-high performance concrete paving layer 400 from cracking, improve the stiffness, bearing capacity, and fatigue resistance of the ultra-high performance concrete paving layer 400, and can more effectively resist the deformation of the ultra-high performance concrete layer 411 under the action of vehicle loads.
[0061] The following shows the specific construction process of the continuous structure 30 of the simply supported beam bridge deck provided by the embodiment of the present utility model: During the precast process of the first precast main beam 10 and the second precast main beam 20, the first positioning steel plate 110 can be fixed to the top surface of the first precast main beam 10 through the first anchoring reinforcement 130, and the second positioning steel plate 120 can be fixed to the top surface of the second precast main beam 20 through the second anchoring reinforcement 140; alternatively, after the first precast main beam 10 and the second precast main beam 20 are erected at the construction site, the first positioning steel plate 110 and the second positioning steel plate 120 can be fixed in the same way during the casting of the wet joint and the cantilever.
[0062] Paste the rubber plate on the support steel plate 200, and then weld the support shear studs 420 and the positioning shear studs 430 correspondingly on the support steel plate 200, the first positioning steel plate 110 and the second positioning steel plate 120. This step can be prefabricated in the factory and then transported to the construction site as a whole, or can be directly fabricated on the construction site. After the first precast main beam 10 and the second precast main beam 20 are erected, the surfaces of the first positioning steel plate 110 and the second positioning steel plate 120 can be cleaned, and then the rubber plate and the support steel plate 200 are flatly installed on the first positioning steel plate 110 and the second positioning steel plate 120, and fillet welding is used at the splicing joints of the support steel plate 200 and the first rib plate 111 and the second rib plate 121. It should be noted that no bonding treatment is carried out between the rubber plate and the first positioning steel plate 110 and the second positioning steel plate 120 to ensure that a certain degree of relative slip can occur between the rubber plate and the first positioning steel plate 110 and the second positioning steel plate 120.
[0063] After the installation of the support steel plate 200 is completed, the steel mesh 412 can be first laid above the support steel plate 200, and then ultra-high performance concrete is poured. It can be understood that the ultra-high performance concrete material has good construction performance, which can ensure its compactness after caking with the steel mesh 412 in a narrow space, and can improve the construction quality of the overall structure.
[0064] After the construction of the ultra-high performance concrete paving layer 400 is completed, the construction of the upper road surface layer structure can be carried out. It should be noted that in the whole construction process of the simply supported beam bridge deck continuous structure 30, only the ultra-high performance concrete paving layer 400 must be constructed on site, and the rest of the components can be prefabricated in the factory and then assembled on site. The ultra-high performance concrete paving layer 400 provided by the embodiment of the present invention further simplifies the construction process of the structure at the bridge deck continuous part, and can greatly shorten the construction period of the overall bridge deck construction.
[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A continuous bridge deck structure of a simply supported beam bridge, characterized in that: Laid in a notch between a first prefabricated main beam (10) and a second prefabricated main beam (20), the simply supported beam bridge deck continuous structure (30) comprises: A positioning component (100) extending along a laying direction, one side of the positioning component (100) being fixedly connected to the first prefabricated main beam (10), and the other side of the positioning component (100) being fixedly connected to the second prefabricated main beam (20); a first rib plate (111) is provided on the upper surface of the positioning component (100) located above the first prefabricated main beam (10), and a second rib plate (121) is provided on the upper surface of the positioning component (100) located above the second prefabricated main beam (20); A support steel plate (200), one side of which is welded to the first rib plate (111), and the other side of which is welded to the second rib plate (121), the support steel plate (200) and the positioning component (100) extending synchronously; A flexible member (300) is fixed to a side of the supporting steel plate (200) facing the positioning component (100) and is slidably matched with the positioning component (100); An ultra-high performance concrete paving layer (400) is laid above the supporting steel plate (200) and the positioning component (100).
2. The continuous bridge deck structure of a simply supported beam bridge according to claim 1, characterized in that: The positioning component (100) comprises a first positioning steel plate (110) and a second positioning steel plate (120), wherein the first positioning steel plate (110) is arranged above the first prefabricated main beam (10), and the second positioning steel plate (120) is arranged above the second prefabricated main beam (20), the first rib plate (111) is arranged on the first positioning steel plate (110), and the second rib plate (121) is arranged on the second positioning steel plate (120).
3. The continuous bridge deck structure of a simply supported beam bridge according to claim 2, characterized in that: The first positioning steel plate (110) comprises a first force-bearing section (112) and a first transition section (113); the first transition section (113) is arranged at an end of the first force-bearing section (112) away from the second positioning steel plate (120); and the first rib plate (111) is arranged between the first force-bearing section (112) and the first transition section (113); The second positioning steel plate (120) comprises a second force-bearing section (122) and a second transition section (123); the second transition section (123) is arranged at an end of the second force-bearing section (122) away from the first positioning steel plate (110); and the second rib plate (121) is arranged between the second force-bearing section (122) and the second transition section (123).
4. The continuous bridge deck structure of a simply supported beam bridge according to claim 3, characterized in that: The positioning component (100) further comprises a first anchoring steel bar (130) and a second anchoring steel bar (140), wherein the first anchoring steel bar (130) is arranged at the lower side of the first positioning steel plate (110) and is embedded in the first prefabricated main beam (10), and the first anchoring steel bar (130) is used to fix the first positioning steel plate (110); the second anchoring steel bar (140) is arranged at the lower side of the second positioning steel plate (120) and is embedded in the second prefabricated main beam (20), and the second anchoring steel bar (140) is used to fix the second positioning steel plate (120).
5. The continuous bridge deck structure of a simply supported beam bridge according to claim 4, characterized in that: The first anchoring steel bar (130) comprises: A first straight line segment (131) is located at the lower side of the first force-bearing segment (112) and is fixedly connected to the first force-bearing segment (112); a first inclined section (132), located at an end of the first straight section (131) away from the second anchoring steel bar (140), and arranged at a first preset angle with the first straight section (131), the opening of the first preset angle facing the first prefabricated main beam (10); The first curved section (133) is located at one end of the first straight section (131) facing the second anchoring steel bar (140), and is curled in a direction away from the second anchoring steel bar (140).
6. The continuous bridge deck structure of a simply supported beam bridge according to claim 4, characterized in that: The second anchoring steel bar (140) comprises: A second straight line segment (141) is located at the lower side of the second force-bearing segment (122) and is fixedly connected to the second force-bearing segment (122); a second inclined section (142), located at an end of the second straight section (141) away from the first anchoring steel bar (130), and arranged at a second preset angle with the second straight section (141), the opening of the second preset angle facing the second prefabricated main beam (20); The second curved section (143) is located at one end of the second straight section (141) facing the first anchoring steel bar (130), and is curled in a direction away from the first anchoring steel bar (130).
7. The continuous bridge deck structure of a simply supported beam bridge according to any one of claims 1 to 6, characterized in that: The flexible member (300) comprises a rubber plate, which is attached to a side of the supporting steel plate (200) facing the positioning component (100) and is slidably matched with the positioning component (100).
8. The continuous bridge deck structure of a simply supported beam bridge according to any one of claims 1 to 6, characterized in that: The ultra-high performance concrete pavement layer (400) comprises a pavement layer body (410), supporting shear nails (420) and positioning shear nails (430); the pavement layer body (410) is laid on the top of the supporting steel plate (200); one end of the supporting shear nail (420) is embedded in the pavement layer body (410), and the other end is fixedly connected to the supporting steel plate (200); one end of the positioning shear nail (430) is embedded in the pavement layer body (410), and the other end is fixedly connected to the positioning component (100).
9. The continuous bridge deck structure of a simply supported beam bridge according to claim 8, characterized in that: The pavement layer body (410) comprises an ultra-high performance concrete layer (411) and a steel mesh (412), wherein the steel mesh (412) is penetrated through the ultra-high performance concrete layer (411) along the width direction of the first prefabricated main beam (10).