Expansion joint heightening device after old bridge asphalt paving
Through the combined structure of elevated steel sections, waterproof strips and steel reinforcement components, the problem of handling expansion joints after the bridge deck pavement is raised is solved, efficient and economical construction of the bridge renovation is achieved, and the safety and service life of the bridge are ensured.
Patent Information
- Application Number
- CN202422705560.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-07
AI Technical Summary
During bridge reconstruction, after the bridge deck pavement is raised, the treatment of expansion joints is time-consuming and labor-intensive, and can easily damage the main beam and abutment structure, affecting construction efficiency and costs.
A combined structure of elevated steel, waterproof strips, steel reinforcement components and reinforced concrete is used. It is prefabricated in the factory and installed on site to meet the expansion and deformation requirements of the bridge and avoid the need to dismantle the original expansion joints.
It achieves the stability of bridge expansion joints, shortens construction period, saves investment, improves construction convenience, and ensures bridge safety and economic benefits.
Smart Images
Figure CN223468676U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge engineering technical field, concretely relates to a kind of old bridge asphalt post-paving expansion joint heightening device. BACKGROUND
[0002] Bridge deck pavement is lowered in wear resistance, waterproofness, skid resistance after being in operation for a period of time, seriously affects bridge driving safety and comfort. Therefore, overlaying asphalt surface layer is a common way in old bridge renovation. After bridge deck pavement is paved, bridge deck elevation is often raised, and how to deal with expansion joint located at the end of bridge, anchored on beam end and back wall is one of common problems in old bridge reinforcement and renovation project.
[0003] In previous bridge renovation, expansion joint anchoring area concrete in old bridge is often directly chiseled, then steel bar in anchoring area is cut, old bridge expansion joint is removed as a whole, and new expansion joint is replaced. This method not only needs to reselect and redesign expansion joint, but also consumes time and effort, additionally increases project investment, and easily damages main beam and abutment structure in chiseling and cutting process, which is not conducive to bridge safety.
[0004] Therefore, to solve bridge deck pavement raising problem, meet bridge expansion and deformation, shorten construction period, save investment and improve construction convenience is an urgent engineering technical problem to be solved in bridge renovation. UTILITY MODEL CONTENT
[0005] Based on the above description, the utility model provides an old bridge asphalt post-paving expansion joint heightening device to solve bridge deck pavement raising problem, meet bridge expansion and deformation, shorten construction period, save investment and improve construction convenience.
[0006] The technical solution of the utility model to solve the above technical problem is as follows:
[0007] An old bridge asphalt post-paving expansion joint heightening device is used for processing expansion joint after old bridge overlaying asphalt layer, and characterized in that it comprises:
[0008] Heightening steel, including plane part and heightening part, the plane part is fixed on old bridge and located at one side of asphalt overlaying layer close to old bridge expansion joint, the heightening part is connected to the upper end of the plane part and located away from the asphalt overlaying layer, and the heightening part and corresponding asphalt overlaying layer form concrete pouring area; heightening parts of heightening steel on adjacent two old bridges are oppositely arranged, and one side of the heightening steel away from the asphalt overlaying layer is formed with mounting groove,
[0009] Waterproof strip, two sides of the waterproof strip are respectively mounted in mounting grooves of two opposite heightening steels;
[0010] A steel reinforcement member is laid on the upper end of the planar part;
[0011] A reinforced concrete is cast in the concrete casting area.
[0012] Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:
[0013] The steel structure and the steel reinforcement combined member can meet the requirements of the bridge deck pavement heightening and the bridge expansion deformation, can be stably arranged on the bridge section and the abutment structure, the combined structure used can be prefabricated in a factory and installed on site, the original expansion joint structure does not need to be removed, the construction is convenient and fast, and the application is economic and practical, has a significant cost advantage, and saves engineering resources.
[0014] On the basis of the above technical scheme, the utility model can also be improved as follows.
[0015] Further, the planar part is arrayed with a plurality of fixing holes, and a plurality of expansion bolts are connected with the old bridge through the fixing holes.
[0016] Further, the steel reinforcement member comprises anchor steel bars and distribution steel bars, the anchor steel bars are arranged along the length direction of the old bridge and arranged along the width direction, and the distribution steel bars are perpendicular to the anchor steel bars to form a grid structure.
[0017] Further, the anchor steel bars are bent near the heightening part to form a bent section parallel to the heightening part.
[0018] Further, the waterproof strip is a V-shaped rubber strip.
[0019] Further, the two sides of the V-shaped rubber strip are respectively clamped in the mounting grooves of the two opposite heightening steels.
[0020] Further, the upper end surface height of the heightening part is consistent with the upper end surface height of the asphalt overlay.
[0021] Further, the lower end surface of the planar part and the contact area of the old bridge are smeared with epoxy resin. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 A structure schematic view of an old bridge asphalt overlay expansion joint heightening device provided by the embodiment of the application;
[0023] Figure 2 A structure schematic view of a heightening steel in the embodiment of the application;
[0024] Figure 3 A structure schematic view of a waterproof strip in the embodiment of the application;
[0025] Figure 4 Fig. 1 is a structural diagram of an anchoring steel bar in an embodiment of the present application.
[0026] 10, high-rise steel; 101, planar portion; 102, high-rise portion; 20, waterproof strip; 21, V-shaped rubber strip; 30, steel reinforcement member; 31, anchoring steel bar; 32, distribution steel bar; 16, reinforced concrete; 103, concrete pouring area; 104, mounting groove; 105, fixing hole; 40, epoxy resin. DETAILED DESCRIPTION
[0027] For the purpose of promoting an understanding of the present application, the present application will be described in greater detail below with reference to the drawings. In the drawings, embodiments of the present application are shown. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the application to those skilled in the art.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
[0029] It is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device described herein is oriented in an orientation that is opposite to the orientation shown in a figure, a spatially relative term that can have been used to describe a feature in the figure is to be interpreted to encompass both the feature oriented as depicted in the figure and the feature oriented opposite to the depiction in the figure (i.e., the feature is to be interpreted to encompass both the depicted orientation and the opposite orientation). Accordingly, the terms "below," "above," "upper," "lower," and the like as can be used herein, merely describe a relative position to the examples as shown in the figures. Likewise, the terms "upwardly," "downwardly," and the like can refer to directions of the features when the device is oriented in the use or operation position as shown in the figures. The terms "first," "second," and the like can be used herein to describe various elements, regions, layers and / or sections but are not intended to be limiting, unless otherwise defined.
[0030] It is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device described herein is oriented in an orientation that is opposite to the orientation shown in a figure, a spatially relative term that can have been used to describe a feature in the figure is to be interpreted to encompass both the feature oriented as depicted in the figure and the feature oriented opposite to the depiction in the figure (i.e., the feature is to be interpreted to encompass both the depicted orientation and the opposite orientation). Accordingly, the terms "below," "above," "upper," "lower," and the like as can be used herein, merely describe a relative position to the examples as shown in the figures. Likewise, the terms "upwardly," "downwardly," and the like can refer to directions of the features when the device is oriented in the use or operation position as shown in the figures. The terms "first," "second," and the like can be used herein to describe various elements, regions, layers and / or sections but are not intended to be limiting, unless otherwise defined.
[0031] As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. It should also be understood that the term "comprising" or "having" etc., specifies the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but does not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
[0032] In order to solve the problem of bridge deck pavement lifting, meet the needs of bridge expansion deformation, shorten the construction period, save investment, and improve the construction convenience, the embodiment provides a device for raising expansion joints after asphalt overlay of old bridge.
[0033] The device comprises a raised steel 10, a waterproof strip 20, a reinforcing steel member 30, and reinforced concrete 16.
[0034] The raised steel 10 comprises a flat part 101 and a raised part 102. The flat part 101 is fixed on the old bridge and located on one side of the asphalt overlay layer 50 close to the old bridge expansion joint 70. The raised part 102 is connected to the upper end of the flat part 101 and located away from the asphalt overlay layer 50, and a concrete pouring area 103 is formed between the two. The raised parts 102 of the raised steels 10 on two adjacent old bridges are oppositely arranged, and the side of the raised steel 10 away from the asphalt overlay layer is formed with a mounting groove 104.
[0035] The waterproof strip 20 is mounted in the mounting grooves 104 of the two opposite raised steels 10 on both sides, and a V-shaped rubber strip 21 is used in the embodiment, which is clamped in the mounting grooves 104 of the two opposite raised steels 10 on both sides. This design not only enhances the waterproof effect, but also can adapt to the expansion deformation of the bridge and prolong the service life of the bridge.
[0036] The reinforcing steel member 30 is laid on the upper end of the flat part 101 and comprises anchoring steel bars 31 and distribution steel bars 32. The anchoring steel bars 31 are arranged along the length direction of the old bridge 60 and arranged along the width direction. The distribution steel bars 32 are perpendicular to the anchoring steel bars 31 to form a grid structure, which enhances the overall stability and strength of the concrete pouring area 103. The part of the anchoring steel bars 31 close to the raised part 102 is bent to form a bent section 33 parallel to the raised part 102, which further enhances the connection strength with the raised part 102.
[0037] The reinforced concrete 16 is poured in the concrete pouring area 103 and forms a reinforced structure with the reinforcing steel member 30 to ensure the stability and durability of the bridge expansion joint. A plurality of fixing holes 105 are arrayed on the flat part 101, and a plurality of expansion bolts 80 pass through the fixing holes 105 to connect with the old bridge, which enhances the connection stability of the raised steel 10 and the old bridge. This fixing method not only improves the construction efficiency, but also reduces the construction cost.
[0038] The lower end surface of the flat part 101 and the contact area of the old bridge are coated with epoxy resin 40, further enhancing the bonding strength of the heightened steel 10 and the old bridge, ensuring the stability of the structure. The upper end surface of the heightening part 102 is consistent with the upper end surface height of the asphalt overlay, ensuring the flatness of the bridge deck and driving comfort.
[0039] Through the above structural design, the old bridge asphalt overlay expansion joint heightening device of the embodiment can effectively solve the problem of bridge deck paving lifting, all components can be manufactured in the factory and installed on site, thereby effectively shortening the construction period and improving the work efficiency. Secondly, the device is simple, does not need to remove the original expansion joint structure, does not need to damage the main beam, abutment and other main structures, is beneficial to the safety of the bridge, has significant cost advantage, saves engineering resources, improves the safety of the bridge, is convenient and fast for construction, saves the cost, shortens the construction period, has good social and economic benefits.
[0040] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A kind of old bridge asphalt after overhanging expansion joint heightening device, for the treatment of expansion joint after old bridge overhanging asphalt layer, it is characterized in that, The utility model relates to a kind of old bridge asphalt overlaying structure, including: High-type steel, including plane part and high part, the plane part is fixed on old bridge and is located in asphalt overlaying layer near old bridge expansion joint one side, the high part is connected to the upper end of the plane part and is located away from the asphalt overlaying layer setting, the high part and corresponding the asphalt overlaying layer between constitute concrete pouring area;The high part of high-type steel on adjacent two old bridges is oppositely arranged, the side of the high-type steel away from the asphalt overlaying layer is formed with installation groove, Waterproof strip, the two sides of the waterproof strip are respectively installed in the installation groove of two opposite high-type steel; Reinforced member of steel bar, is laid on the upper end of the plane part; Reinforced concrete, is poured in the concrete pouring area.
2. The device according to claim 1, characterized in that, Several fixed holes are formed with array on the plane part, and several expansion bolts are connected with old bridge through the fixed holes.
3. The device according to claim 1, characterized in that, The reinforced member of steel bar includes anchoring steel bar and distribution steel bar, the anchoring steel bar is arranged along the length direction of old bridge and is arranged along its width direction, and the distribution steel bar is vertically staggered with the anchoring steel bar to form grid structure.
4. The device according to claim 3, characterized in that, The anchoring steel bar is bent near the part near the high part to form bent section parallel with the high part.
5. The device of claim 1, wherein, Waterproof strip is V-shaped rubber strip.
6. The device of claim 1, wherein, The two sides of the V-shaped rubber strip are respectively clamped in the installation groove of two opposite high-type steel.
7. The device of claim 1, wherein, The upper end surface height of the high part is consistent with the upper end surface height of the asphalt overlaying layer.
8. The device of claim 1, wherein, The contact area of the lower end surface of the plane part and the old bridge is smeared with epoxy resin.