High-strength expansion device and bridge expansion joint structure
By designing a high-strength expansion joint, the problems of stability and waterproof performance of bridge expansion joints have been solved, achieving better expansion adaptability and structural strength, and extending the service life and safety of bridges.
Patent Information
- Application Number
- CN202520511692.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-21
AI Technical Summary
Existing bridge expansion joints suffer from low stability, poor waterproofing, insufficient expansion range, and low structural strength during long-term use, leading to damage to the bridge structure and affecting its service life and safety.
A high-strength expansion joint is adopted, including anchors, expansion panels, support pads and waterstops. The anchors are fixed to both sides of the expansion panels and connected to the bridge body. The expansion displacement holes provide clearance space, the waterstops guide drainage, and the support pads are located below the expansion displacement holes to enhance structural strength and waterproof performance.
It improves the bridge's adaptability to expansion and contraction, enhances structural strength and waterproof performance, reduces maintenance frequency, extends the bridge's service life, and improves safety and durability.
Smart Images
Figure CN223951605U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge technical field especially is related to a high strength expansion device and bridge expansion joint structure. BACKGROUND
[0002] In bridge construction, due to temperature change, concrete shrinkage, vehicle load impact and other factors, the bridge structure will produce expansion and contraction deformation.
[0003] The expansion joint device in the prior art includes a tooth-shaped structure located in the bridge expansion joint.
[0004] The applicant finds that the prior art at least has the following technical problems: the conventional expansion joint device has low stability in long-term use, and rainwater erodes the bridge structure through the tooth-shaped structure, so the waterproof performance is poor. The expansion amount is insufficient, which limits the bridge expansion and causes structural damage; the strength of the expansion device is low, and the expansion device is easily deformed and damaged when the vehicle load passes. These not only affect the normal use performance of the bridge, shorten the service life of the bridge, but also increase the maintenance cost and safety hazards. UTILITY MODEL CONTENT
[0005] The utility model discloses a kind of expansion device and bridge expansion joint structure, to solve the technical problems that bridge expansion device expansion amount is insufficient in prior art, structure strength is low;Many technical effects that preferred technical solutions in the technical solutions provided by the utility model can produce are described in the following.
[0006] To achieve the above object, the utility model provides the following technical scheme:
[0007] The utility model provides high strength expansion device, including anchorage, expansion panel, support backing plate and water stop, wherein:
[0008] The anchorage is fixed to the opposite sides of the expansion panel, to be fixedly connected with the bridge body on both sides of expansion joint;
[0009] Expansion displacement hole is provided on the expansion panel, the number of expansion displacement hole is multiple, and expansion displacement hole is arranged along the length direction and / or width direction of the expansion panel;
[0010] The water stop is all fixed on the bottom of the expansion panel, for flow guide drainage;Support backing plate is fixed on the corresponding anchorage, and the support backing plate is located below the expansion displacement hole, for supporting the part where the expansion displacement hole is located.
[0011] Preferably, the anchor includes an anchor plate, the anchor plate is provided with a string hole and a mounting groove, the mounting groove is open to the inner side and the upper side of the expansion joint, and one side of the support pad plate extends into the mounting groove and is arranged horizontally.
[0012] Preferably, the expansion panel includes a panel surface and an opening part, the expansion displacement hole is arranged in the opening part, and the support pad plate is supported on the bottom of the opening part.
[0013] Preferably, the water stop belt includes a first supporting plate, a water storage groove and a second supporting plate, wherein:
[0014] The first supporting plate and the second supporting plate are fixedly connected to opposite sides of the water storage groove, the first supporting plate and the second supporting plate are both horizontally arranged, the first supporting plate is fixedly connected to the anchor, and the second supporting plate is clamped and fixed between the opening part and the support pad plate.
[0015] The water storage groove is located below the panel surface.
[0016] Preferably, the water storage groove has a V-shaped cross section, and the groove opening of the water storage groove faces the expansion panel.
[0017] Preferably, there is a mounting gap between the end of the support pad plate and the water storage groove.
[0018] Preferably, the expansion displacement hole is arranged in two or more rows on the expansion panel, each row of the expansion displacement hole is arranged along the width direction of the expansion panel, the number of the expansion displacement holes in the same row is multiple, and all the expansion displacement holes in the same row are arranged along the length direction of the expansion panel.
[0019] Preferably, expansion ribs are formed between two adjacent expansion displacement holes in the same row, and the expansion ribs in different rows are arranged along the length direction of the expansion panel.
[0020] Preferably, the number of the anchors on the same side of the expansion panel is two or more, and all the anchors are arranged along the length direction of the expansion panel.
[0021] The bridge expansion joint structure provided by the utility model has the advantages that the high-strength expansion device is arranged in the expansion joint of the bridge, the expansion displacement hole is arranged in the expansion panel, the support pad plate is arranged in the opening part of the expansion panel, the water storage groove is arranged below the panel surface, the expansion displacement hole is arranged in two or more rows, the expansion ribs are arranged between two adjacent expansion displacement holes in the same row, and the number of the anchors on the same side of the expansion panel is two or more.
[0022] The high-strength expansion device and bridge expansion joint structure have the following beneficial effects compared with the prior art: when expansion and deformation of the bridge structure is caused by factors such as temperature change, concrete shrinkage, vehicle load impact, etc., the expansion displacement hole is increased or reduced, which provides a space for expansion of the expansion panel, better meets the complex expansion deformation requirements of the bridge, and reduces damage to the bridge structure caused by limited expansion. The expansion panel is a whole plate structure, which can ensure the integrity of the bridge and avoid bumping and large noise. The anchoring piece enhances the connection reliability of the expansion panel and the bridge, the support pad plate is located directly below the expansion displacement hole, the structural strength of the expansion panel is improved, deformation and damage of the expansion panel are prevented when the vehicle load passes, maintenance frequency and cost are reduced, and the safety and durability of the bridge are improved; the water stop is located at the bottom of the expansion panel and is used for storing water seeping into the expansion panel, preventing rainwater and the like from seeping into the bridge structure, greatly improving the waterproof and dirt prevention effects, and effectively prolonging the service life of the bridge. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.
[0024] Figure 1 is a side view of the high-strength expansion device embodiment one;
[0025] Figure 2 is a top view of the high-strength expansion device embodiment one;
[0026] Figure 3 is a side view of the high-strength expansion device embodiment two;
[0027] Figure 4 is a top view of the high-strength expansion device embodiment two;
[0028] Figure 5 is a side view of the high-strength expansion device embodiment three;
[0029] Figure 6 is a top view of the high-strength expansion device embodiment three;
[0030] Figure 7 is a structure schematic view of the water stop;
[0031] Figure 8 is a structure schematic view of the anchoring piece.
[0032] 1, telescopic panel; 11, panel surface part; 12, opening part; 121, telescopic displacement hole; 122, telescopic rib; 2, supporting backing plate; 3, water stop belt; 31, first supporting plate; 32, water storage groove; 33, second supporting plate; 4, anchoring piece; 41, mounting groove; 42, string rib hole; 5, mounting gap. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0034] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0035] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0036] The utility model embodiment provides a kind of high-strength telescopic device and bridge expansion joint structure, can better satisfy the complex telescopic deformation requirement of bridge, improve the structural strength of telescopic panel, improve waterproof effect, effectively prolong the service life of bridge.
[0037] The technical scheme provided by the utility model will be described in more detail below. Figures 1-8 The technical scheme provided by the utility model will be described in more detail below.
[0038] Embodiment 1:
[0039] Reference Figures 1-8As shown, the high-strength expansion device provided by the utility model, including anchor 4, expansion panel 1, support pad 2 and water stop 3, wherein: anchor 4 is fixed on the opposite sides of expansion panel 1, to be fixedly connected with the bridge body on both sides of expansion joint, expansion panel 1 is provided with expansion displacement hole 121, the number of expansion displacement hole 121 is multiple, expansion displacement hole 121 is arranged along the length direction and / or width direction of expansion panel 1, water stop 3 is fixed on the bottom of expansion panel 1, for flow guide and drainage, support pad 2 is fixed on the corresponding anchor 4, and support pad 2 is located below expansion displacement hole 121, for supporting the part where expansion displacement hole 121 is located.
[0040] The high-strength expansion device of the embodiment, when expansion deformation occurs in the bridge structure due to factors such as temperature change, concrete shrinkage, vehicle load impact, etc., expansion displacement hole 121 increases or decreases, which provides space for the expansion of expansion panel 1, better meets the complex expansion deformation requirements of the bridge, and reduces the damage to the bridge structure caused by limited expansion. Expansion panel 1 is an integral plate structure, which can ensure the integrity of the bridge and avoid bumps and loud noises.
[0041] Anchor 4 enhances the connection reliability of expansion panel 1 and the bridge, support pad 2 is located directly below expansion displacement hole 121, which improves the structural strength of expansion panel 1, prevents expansion panel 1 from being deformed and damaged when the vehicle load passes, reduces the maintenance frequency and cost, and improves the safety and durability of the bridge.
[0042] Water stop 3 is located at the bottom of expansion panel 1, which is used to store water that penetrates into expansion panel 1, prevents rainwater and other water from penetrating into the bridge structure, greatly improves the waterproof and dirt prevention effect, and effectively prolongs the service life of the bridge.
[0043] In the embodiment, as shown in Figure 2 , Figure 4 and Figure 6 , expansion displacement hole 121 is provided with more than two rows on expansion panel 1, each row of expansion displacement hole 121 is arranged along the width direction of expansion panel 1, the number of expansion displacement hole 121 in the same row is multiple, and all expansion displacement holes 121 in the same row are arranged along the length direction of expansion panel 1; expansion bars 122 are formed between the adjacent two expansion displacement holes 121 in the same row, and the expansion bars 122 in different rows are arranged along the length direction of expansion panel 1.
[0044] The aforementioned structure of the expansion displacement hole 121 and expansion rib 122 forms a grid structure in the middle of the expansion panel 1. When the bridge structure undergoes expansion and contraction due to factors such as temperature changes, concrete shrinkage, and vehicle load impact, the expansion displacement hole 121 increases or decreases, and the expansion rib 122 deforms, providing space for the expansion and contraction of the expansion panel 1. This better meets the various complex expansion and contraction requirements of the bridge and reduces damage to the bridge structure caused by limited expansion and contraction.
[0045] As an optional implementation, see Figures 1-6 , Figure 8 As shown, the anchor 4 includes an anchor plate, on which are provided reinforcing bar holes 42 and mounting grooves 41. The inner and upper sides of the mounting grooves 41 facing the expansion joint are open sides, and one side of the support pad 2 extends into the mounting grooves 41 and is set horizontally.
[0046] The anchor 4 of the above structure facilitates the installation of the waterstop 3 and the support pad 2, thereby improving the structural strength.
[0047] As an optional implementation, see Figures 1-6 As shown, the telescopic panel 1 includes a panel surface 11 and an opening portion 12. The telescopic displacement hole 121 is formed in the opening portion 12, and the support pad 2 is supported at the bottom of the opening portion 12.
[0048] In this embodiment, a portion of the telescopic panel 1 is an opening portion 12 with a telescopic displacement hole 121, and the other portion is a plate surface 11 without a telescopic displacement hole 121. That is, the plate surface 11 is a plate without holes. Since the structural strength is reduced after the telescopic displacement hole 121 is opened, in order to ensure the stability and structural strength of the structure, a support pad 2 is used to support the bottom of the opening portion 12, thereby improving the structural strength and preventing the telescopic device from deforming and being damaged when a vehicle load passes by.
[0049] As an optional implementation, see Figure 1 and Figure 7 As shown, the waterstop 3 includes a first support plate 31, a water storage tank 32, and a second support plate 33. The first support plate 31 and the second support plate 33 are fixedly connected to opposite sides of the water storage tank 32. Both the first support plate 31 and the second support plate 33 are horizontal. The first support plate 31 is fixedly connected to the corresponding anchor 4, and the second support plate 33 is clamped and fixed between the opening 12 and the support pad 2. The water storage tank 32 is located below the plate surface 11. The waterstop 3 can be a single stainless steel plate to improve structural strength.
[0050] The first supporting plate 31 and the second supporting plate 33 are sealingly fixedly connected with the supporting cushion plate 2, and sealing pads or the like can be arranged between the two. The plate surface part 11 of the first supporting plate 31, the second supporting plate 33, the supporting cushion plate 2 and the expansion joint panel 1 are mutually adhered, thereby improving the stability of the structure and preventing a large amount of rainwater from penetrating.
[0051] The water storage groove 32
[0052] The water storage groove 32 is located below the plate surface part 11 and can receive seeped rainwater or the like, thereby further improving the waterproof performance. The end of the water storage groove 32 is in communication with the drain pipe, and drainage can be performed.
[0053] As an optional embodiment, the cross section of the water storage groove 32 is V-shaped, and the groove opening of the water storage groove 32 is arranged towards the expansion joint panel 1.
[0054] The cross section of the water storage groove 32 is V-shaped, and the water storage groove 32 can be pushed together or stretched according to the temperature change stress, that is, the width of the V-shaped structure changes, and the expansion and contraction of the expansion device can be better adapted.
[0055] As an optional embodiment, referring to Figure 1 , the mounting gap 5 exists between the end of the supporting cushion plate 2 and the water storage groove 32.
[0056] The mounting gap 5 leaves a margin for the expansion and contraction of the water storage groove 32 and the expansion joint panel 1, and prevents the supporting cushion plate 2 from affecting the expansion and contraction of the water stop belt 3 and the expansion joint panel 1.
[0057] As an optional embodiment, referring to Figure 2 , Figure 4 and Figure 6 , on the same side of the expansion joint panel 1, the number of anchor members 4 is two or more, and all the anchor members 4 are arranged at intervals along the length direction of the expansion joint panel 1.
[0058] The anchor member 4 is welded with the steel bars in the bridge body on both sides of the expansion joint, or is fixed into the concrete. The above structure improves the stability of the expansion device in the expansion joint and prevents the expansion joint panel 1 from being separated from the expansion joint of the bridge.
[0059] Example 2:
[0060] Referring to Figure 3 and Figure 4 , the difference between the present example 2 and the example 1 is that the number of rows of the expansion displacement holes 121 is different.
[0061] Example 3:
[0062] Referring to Figure 5 and Figure 6 , the difference between the present example 3 and the example 1 is that the number of rows of the expansion displacement holes 121 is different.
[0063] Specifically, the number of telescopic displacement holes 121 is specifically selected and arranged according to the width of the expansion joint on the bridge.
[0064] Embodiment 4:
[0065] The embodiment provides a bridge expansion joint structure, which comprises an expansion joint and the high-strength expansion device.
[0066] The bridge expansion joint structure of the embodiment can better meet various complex expansion deformation requirements of the bridge by installing the high-strength expansion device in the expansion joint, and the overall structural strength, stability and waterproof performance are improved.
[0067] In the description of the specification, specific features, structures or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0068] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means 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 utility model. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0069] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.
Claims
1. A high strength retraction device, characterized by, The high-strength expansion device comprises an anchor, an expansion panel, a support pad and a water stop belt, wherein: The anchor is fixed to opposite sides of the expansion panel and is connected to the bridge on both sides of the expansion joint; The expansion panel is provided with expansion displacement holes, the number of the expansion displacement holes is multiple, and the expansion displacement holes are arranged along the length direction and / or the width direction of the expansion panel; The water stop belt is fixed to the bottom of the expansion panel and is used for water diversion and drainage; the support pad is fixed to the corresponding anchor and is located below the expansion displacement hole and is used for supporting the part where the expansion displacement hole is located.
2. The high strength retraction device of claim 1, wherein, The anchor comprises an anchor plate, the anchor plate is provided with a string hole and a mounting groove, the inner side and the upper side of the mounting groove facing the expansion joint are open sides, one side of the support pad extends into the mounting groove and is arranged horizontally.
3. The high strength retraction device of claim 1, wherein, The expansion panel comprises a panel surface and an opening part, the expansion displacement hole is arranged in the opening part, and the support pad is supported on the bottom of the opening part.
4. The high strength retraction device of claim 3, wherein, The water stop belt comprises a first supporting plate, a water storage groove and a second supporting plate, wherein: The first supporting plate and the second supporting plate are respectively fixedly connected to opposite sides of the water storage groove, the first supporting plate and the second supporting plate are both horizontally arranged, the first supporting plate is fixedly connected to the corresponding anchor, and the second supporting plate is clamped and fixed between the opening part and the support pad; The water storage groove is located below the panel surface.
5. The high strength retraction device of claim 4, wherein, The cross section of the water storage groove is V-shaped, and the groove opening of the water storage groove faces the expansion panel.
6. The high strength retraction device of claim 4, wherein, There is a mounting gap between the end of the support pad and the water storage groove.
7. The high strength retraction apparatus of claim 1, wherein, The expansion displacement hole is arranged in two or more rows on the expansion panel, each row of the expansion displacement holes is arranged along the width direction of the expansion panel, the number of the expansion displacement holes in the same row is multiple, and all the expansion displacement holes in the same row are arranged along the length direction of the expansion panel.
8. The high strength retraction apparatus of claim 1, wherein, Adjacent two expansion displacement holes in the same row form an expansion rib, and the expansion ribs in different rows are arranged along the length direction of the expansion panel.
9. The high strength retraction apparatus of claim 1, wherein, On the same side of the expansion panel, the number of the anchors is two or more, and all the anchors are arranged along the length direction of the expansion panel.
10. A bridge expansion joint structure, characterized by, The high-strength expansion device comprises an expansion joint and the high-strength expansion device according to any one of claims 1-9.