Bridge expansion device for road construction design
By adopting comb plate, bracket structure and water stop design in the bridge expansion device, the stability and durability problems of the bridge expansion device are solved, and higher structural strength and service life are achieved.
Patent Information
- Application Number
- CN202422677448.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-02
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-02
AI Technical Summary
Traditional bridge expansion devices have shortcomings in bearing loads and durability, which are difficult to meet the high requirements of modern bridge engineering.
The comb toothed plate and bracket structure are adopted, and the first open stirrup support bracket is supported by combining the water stop structure and the filling layer to enhance the stability and durability of the bridge expansion device.
It improves the stability and durability of the bridge expansion device, prevents moisture penetration, extends service life, and enhances structural strength and reliability.
Smart Images
Figure CN223255837U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of bridge expansion joints, and in particular to a bridge expansion joint device for road construction design. Background Art
[0002] Bridge expansion devices, used in road construction and design, are a crucial component of modern transportation infrastructure and are widely used in various bridge projects, including highways and urban elevated roads. As the demand for bridge engineering continues to grow, so too do the requirements for bridge expansion devices. Traditional bridge expansion devices primarily utilize metal components and sealing materials to achieve the connection and expansion / contraction functions at both ends of the bridge. These devices play a vital role in ensuring driving safety and extending the service life of bridges.
[0003] In actual applications, in order to ensure the safety and comfort of bridges, various technical means are usually adopted to solve the problem of bridge expansion joints; one common method includes using expansion devices made of spring steel plates, rubber strips, stainless steel plates and other materials. These devices can adapt to the deformation of the bridge caused by temperature changes; another common method is to set multiple layers of elastic gaskets in the expansion joint, using the elasticity and deformation ability of the gaskets to absorb the thermal expansion and contraction effects of the bridge.
[0004] The present application provides another technical solution that can effectively improve the stability and durability of a bridge expansion device, aiming to provide technical personnel in this field with a variety of options for solving the problem. Utility Model Content
[0005] In order to effectively improve the stability and durability of a bridge expansion device, the present application provides a bridge expansion device for road construction design.
[0006] The present application provides a bridge expansion device for road construction design using the following technical solutions:
[0007] A bridge expansion device for road construction design includes an expansion joint arranged between two adjacent bridge decks, and mounting grooves are provided on the top surfaces of the two bridge decks and at one end of the bridge decks close to the expansion joint. First open stirrups extending into the mounting grooves are pre-embedded in the bridge decks, and a bracket is supported on the first open stirrup. A comb plate is detachably connected to the bracket, and the expansion joint is located between the two comb plates.
[0008] By adopting the above technical solution, the comb plate is installed on the bracket, and the bracket is supported by the first open stirrup so that the expansion joint is located between the two comb plates. The design of the first open stirrup and the bracket enables the comb plate to maintain good stability while bearing a large load, thereby effectively improving the stability and durability of the bridge expansion device.
[0009] Preferably, the bracket includes a second open stirrup located between two adjacent first open stirrups and two second steel bars respectively fixed at two bends of the second open stirrups, and the top surface of the first open stirrups supports the second steel bars.
[0010] By adopting the above technical solution, the bracket consists of a second open stirrup and two second steel bars. The second steel bars are fixed at two bends of the second open stirrup. The top surface of the first open stirrup supports the second steel bars, thereby achieving effective support for the second open stirrups, thereby ensuring the stability and bearing capacity of the bracket.
[0011] Preferably, both side arms of the second open stirrup are fixedly provided with support rings, and a plurality of connecting grooves are provided on the top surface of the comb plate. The top of the side arm of the second open stirrup vertically penetrates the comb plate and extends into the connecting groove at the corresponding position. The top surface of the support ring supports the bottom surface of the comb plate, and the top of the side arm of the second open stirrup is threadedly connected with a first nut.
[0012] By adopting the above technical solution, the top of the side arm of the second open stirrup vertically penetrates the comb plate and extends into the connecting groove, and the top surface of the support ring supports the bottom surface of the comb plate, thereby realizing effective support of the comb plate by the second open stirrup; at the same time, the top of the side arm of the second open stirrup is threadedly connected to the first nut, which facilitates the installation of the comb plate on the second open stirrup, thereby improving the maintenance convenience of the device.
[0013] Preferably, the opening of the first opening stirrup is vertically bent with two extension ribs.
[0014] By adopting the above technical solution, two extension bars are vertically bent at the opening of the first opening stirrup, which enhances the overall rigidity and stability of the first opening stirrup. At the same time, the setting of the extension bar enables the first opening stirrup to be better connected with other steel bar structures inside the bridge deck, further improving the structural strength and durability of the bridge expansion device.
[0015] Preferably, a longitudinally arranged first steel bar is pre-embedded in the bridge deck at the connection between the first opening stirrup and the extension bar.
[0016] By adopting the above technical solution, the provision of the first steel bar improves the connection strength between the first opening stirrup and the extension bar, thereby enhancing the structural stability of the entire bridge expansion device.
[0017] Preferably, a first splicing groove is provided on the top surface of the comb plate and located at the connection between two adjacent comb plates, and a second splicing groove corresponding to and connected to the first splicing groove is provided on the top surface of the bridge panel. The second splicing groove with corresponding positions and the two splicing grooves are spliced together to form a rectangular groove, and a fixed block is detachably connected to the rectangular groove.
[0018] By adopting the above technical solution, a fixed block is detachably connected in the rectangular groove, thereby achieving a stable connection between two adjacent comb plates and between the comb plate and the bridge deck, thereby improving the overall stability and reliability of the bridge expansion device.
[0019] Preferably, a water-stop structure extending into the expansion joint is provided between the two comb plates.
[0020] By adopting the above technical solution, the water-stop structure can effectively prevent moisture from penetrating into the expansion joint, avoiding corrosion and damage of the bridge expansion device due to long-term immersion, thereby extending the service life of the bridge expansion device and improving its reliability.
[0021] Preferably, a filling layer is cast in the installation groove.
[0022] By adopting the above technical solution, the filling layer cast in the installation groove can effectively fill the gaps between the first open stirrups, the second open stirrups, the comb plates and the rubber water stop, thereby improving the stability and durability of the entire bridge expansion device and extending its service life.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. Install the comb plates on the brackets and support the brackets with the first open stirrups so that the expansion joint is located between the two comb plates. The design of the first open stirrups and brackets enables the comb plates to withstand large loads while maintaining good stability, thereby effectively improving the stability and durability of the bridge expansion device.
[0025] 2. The rectangular groove is detachably connected with a fixing block, which realizes a stable connection between two adjacent comb plates and between the comb plates and the bridge deck, thus improving the overall stability and reliability of the bridge expansion device;
[0026] 3. The water-stop structure can effectively prevent moisture from penetrating into the expansion joint, avoiding corrosion and damage to the bridge expansion device due to long-term immersion, thereby extending the service life of the bridge expansion device and improving its reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a schematic diagram of the overall structure of this application.
[0028] Figure 2 yes Figure 1 A partial enlarged view of part A.
[0029] Figure 3 It is an overall cross-sectional view of this application.
[0030] Figure 4 This is another cross-sectional view of the entire application.
[0031] Explanation of the accompanying drawings: 1. Bridge deck; 11. Mounting groove; 12. First open stirrup; 121. Extension rib; 13. First steel bar; 2. Expansion joint; 21. Water-stop structure; 3. Comb plate; 31. Connecting groove; 32. Filling layer; 4. Second open stirrup; 41. Second steel bar; 42. Support ring; 43. First nut; 5. Rectangular groove; 51. Screw; 52. Fixing block; 53. Accommodating groove; 54. Second nut. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-4 This application is described in further detail.
[0033] The embodiment of the present application discloses a bridge expansion device for road construction design. Figure 1 and Figure 2 The bridge expansion device for road construction design includes an expansion joint 2 arranged between two adjacent bridge panels 1. A mounting groove 11 is provided on the top surface of the two bridge panels 1 and at one end of the bridge panel 1 close to the expansion joint 2. The mounting groove 11 extends along the width direction of the bridge panel 1. A first open stirrup 12 extending into the mounting groove 11 is pre-embedded in the bridge panel 1. A bracket is supported on the first open stirrup 12, and a comb plate 3 is detachably connected to the bracket; the top surface of the comb plate 3 is flush with the notch of the mounting groove 11, the teeth of the two comb plates 3 are arranged opposite to each other, and there is a spacing between the teeth of the two comb plates 3; the two comb plates 3 can move relative to each other, and the expansion joint 2 is located between the two comb plates 3.
[0034] The opening of the first open stirrup 12 is set to face downward. Two extension bars 121 are vertically bent at the opening of the first open stirrup 12. The two extension bars 121 are respectively integrally formed on the two side arms of the first open stirrup 12. The extension bars 121 extend along the opening of the first open stirrup 12. The top surface of the first open stirrup 12 is located above the inner bottom wall of the installation groove 11. There are multiple first open stirrups 12, and the multiple first open stirrups 12 are evenly spaced along the width direction of the bridge deck 1. A longitudinally arranged first steel bar 13 is pre-embedded in the bridge deck 1 and at the connection between the first open stirrup 12 and the extension bar 121. The first steel bar 13 is fixed at the connection between the first open stirrup 12 and the extension bar 121.
[0035] Reference Figure 2 and Figure 3 The bracket includes a second open stirrup 4 and a second steel bar 41; the opening of the second open stirrup 4 is set upward, the second steel bar 41 is set longitudinally, two second steel bars 41 are set on the same bracket, and the two second steel bars 41 are respectively fixed at two bending parts of the second open stirrup 4; the second open stirrup 4 is located between two adjacent first open stirrups 12, and the top surface of the first open stirrup 12 supports the second steel bar 41 to achieve support for the second open stirrup 4.
[0036] The top surface of the comb plate 3 is provided with a connecting groove 31 with an upward notch. There are multiple connecting grooves 31, and the number of connecting grooves 31 is consistent with the number of side arms of the second open stirrup 4 and corresponds one-to-one. Both side arms of the second open stirrup 4 are fixedly sleeved with support rings 42. The top of the side arm of the second open stirrup 4 vertically penetrates the comb plate 3 and extends into the corresponding connection groove 31. The top surface of the support ring 42 supports the bottom surface of the comb plate 3 to achieve support of the comb plate 3 by the second open stirrup 4. The top of the side arm of the second open stirrup 4 is provided with an external thread. The side arm of the second open stirrup 4 is threadedly connected to the first nut 43 via the external thread to achieve a detachable connection between the comb plate 3 and the second open stirrup 4. The top of the side arm of the second open stirrup 4 and the first nut 43 are both located in the connection groove 31 to reduce the impact on the normal use of the comb plate 3 caused by the protrusion of the side arm of the second open stirrup 4 and the first nut 43.
[0037] A waterstop structure 21 extending into the expansion joint 2 is provided between the two comb plates 3. In the present embodiment, the waterstop structure 21 is a rubber waterstop. Both sides of the rubber waterstop are fixed to the bottom surfaces of the two comb plates 3, and the rubber waterstop is located at one end where the two comb plates 3 are close to each other. A filling layer 32 is cast in the mounting groove 11, and the filling layer 32 fills the gap between the first open stirrup 12, the second open stirrup 4, the comb plates 3 and the rubber waterstop; in the present embodiment, the filling layer 32 is a C50 steel limiting concrete layer.
[0038] Reference Figure 1 and Figure 2 In order to realize the connection between two adjacent comb plates 3 and between the comb plates 3 and the bridge deck 1, a first splicing groove is opened on the top surface of the comb plates 3 and located at the connection between the two adjacent comb plates 3. The first splicing groove is located at the corner of the comb plates 3; the top surface of the bridge deck 1 is opened with a second splicing groove corresponding to and connected to the first splicing groove. The second splicing groove and the two splicing grooves at the corresponding positions are spliced together to form a rectangular groove 5. The inner bottom wall of the rectangular groove 5 and the four corners of the rectangular groove 5 are fixedly connected with vertically arranged screws 51. The four screws 51 are commonly penetrated by a same fixing block 52, the fixing block 52 matches the rectangular slot 5, the top surface of the fixing block 52, the top surface of the bridge deck 1 and the top surface of the comb plate 3 are flush; and four receiving grooves 53 corresponding to the positions of the four screw rods 51 are opened on the top surface of the fixing block 52, each screw rod 51 is threadedly connected with a second nut 54, and the top end of the screw rod 51 and the second nut 54 are both located in the receiving groove 53, so as to reduce the impact on the normal use of the fixing block 52 due to the protrusion of the top end of the screw rod 51 and the second nut 54.
[0039] The implementation principle of a bridge expansion device for road construction design in an embodiment of the present application is as follows: excavating an installation groove 11 so that the first open stirrup 12 is exposed in the installation groove 11, fixing the second steel bar 41 at the bending part of the second open stirrup 4, so that the top surface of the support ring 42 supports the comb plate 3, and under the threaded connection between the first nut 43 and the second open stirrup 4, the comb plate 3 is installed on the second open stirrup 4; fixing the rubber water stop between the two comb plates 3, and extending the rubber water stop into the expansion joint 2, so that the top surface of the first open stirrup 12 supports the second steel bar 41, and pouring a filling layer 32 into the installation groove 11; the design of the first open stirrup 12 and the bracket enables the comb plate 3 to maintain good stability while bearing a large load, thereby effectively improving the stability and durability of the bridge expansion device.
[0040] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A bridge expansion device for road construction design, characterized by: The invention comprises an expansion joint (2) arranged between two adjacent bridge decks (1); a mounting groove (11) is provided on the top surface of the two bridge decks (1) and at one end of the bridge deck (1) close to the expansion joint (2); a first open stirrup (12) extending into the mounting groove (11) is pre-embedded in the bridge deck (1); a bracket is supported on the first open stirrup (12); a comb plate (3) is detachably connected to the bracket; and the expansion joint (2) is located between the two comb plates (3).
2. A bridge expansion device for road construction design according to claim 1, characterized in that: The bracket comprises a second open stirrup (4) located between two adjacent first open stirrups (12) and two second steel bars (41) respectively fixed at two bends of the second open stirrups (4); the top surface of the first open stirrups (12) supports the second steel bars (41).
3. A bridge expansion device for road construction design according to claim 2, characterized in that: Both side arms of the second open stirrup (4) are fixedly sleeved with a supporting ring (42); a plurality of connecting grooves (31) are provided on the top surface of the comb plate (3); the top of the side arm of the second open stirrup (4) vertically penetrates the comb plate (3) and extends into the corresponding connecting groove (31); the top surface of the supporting ring (42) supports the bottom surface of the comb plate (3); and the top of the side arm of the second open stirrup (4) is threadedly connected with a first nut (43).
4. The bridge expansion device for road construction design according to claim 1, characterized in that: The opening of the first opening stirrup (12) is vertically bent to form two extension ribs (121).
5. The bridge expansion device for road construction design according to claim 4, characterized in that: A longitudinally arranged first steel bar (13) is pre-buried in the bridge deck (1) at the connection between the first opening stirrup (12) and the extension bar (121).
6. The bridge expansion device for road construction design according to claim 1, characterized in that: A first splicing groove is provided on the top surface of the comb tooth plate (3) and at the connection between two adjacent comb tooth plates (3); a second splicing groove is provided on the top surface of the bridge deck (1) and corresponds to and is in communication with the first splicing groove; the second splicing groove and the two splicing grooves at corresponding positions are spliced together to form a rectangular groove (5); a fixing block (52) is detachably connected in the rectangular groove (5).
7. The bridge expansion device for road construction design according to claim 1, characterized in that: A water-stop structure (21) extending into the expansion joint (2) is provided between the two comb plates (3).
8. The bridge expansion device for road construction design according to claim 1, characterized in that: A filling layer (32) is cast in the installation groove (11).