Filling type seamless telescopic device

Abstract

The utility model belongs to the technical field of bridge auxiliary functional parts, and particularly discloses a filling type seamless expansion device which comprises fixing pieces arranged on the two sides of a beam seam of a structure body, a notch is reserved in the top of the structure body and located over the beam seam, the width of the notch is larger than that of the beam seam, and the width of the notch is larger than that of the beam seam. The fixing parts are provided with notches, the notches are filled with elastic-plastic filling materials, the upper portions of the fixing parts are pre-buried in the elastic-plastic filling materials, the lower portions of the fixing parts are pre-buried in a structure body, and a connecting part is connected between the two fixing parts. According to the utility model, the reliability and the strength of the two fixing pieces pre-embedded in the structure main body can be improved, and the supporting force on the elastic-plastic filling material can be improved, so that the wheel load can be borne, larger deformation can be avoided, and the overall service life of the structure main body can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge accessory function part technical field, concretely relates to a filling type seamless expansion device. BACKGROUND

[0002] The structure main body of the bridge upper portion can occur the expansion deformation along the bridge longitudinal direction because of the temperature change and the concrete shrinkage and creep, therefore need to leave the beam joint between the beam body and the beam body and the abutment, and install the expansion device (namely commonly called expansion joint) with the deformation joint to adapt to this expansion deformation.

[0003] The traditional expansion joint has the problem of discontinuous bridge deck structure, and the vehicle will impact when passing through the expansion joint, causes the uneven driving, influences the driving comfort, and the repeated impact when the vehicle passes makes the expansion joint easy to loosen, deform and damage, and even can cause the damage of the bridge itself seriously, reduces the service life of the bridge, and endangers the driving safety. The bridge expansion joint is exposed outside, and the accumulated dust and garbage for a long time can fill the gap of the expansion joint, causes the expansion joint to fail, becomes one of the typical difficulties of the bridge maintenance, and the maintenance cost is high.

[0004] Since the late 1970s, the filling type bridge seamless expansion device using high elastic plastic material has been developed and applied, and the filling type seamless expansion device is filled with the hot mixed material elastic plastic body composed of a plurality of high molecular polymer modified asphalt, anti-aging agent and aggregate in the notch at the bridge expansion joint, so that the bridge deck is continuous, and the driving comfort is improved. However, the elastic plastic body filling type expansion device also has some obvious defects, because the elastic plastic body itself is soft and has small rigidity, under the action of the wheel load, the deformation is large, the interface between the elastic plastic body and the bridge deck pavement layer is prone to debonding, the edge of the bridge deck pavement layer is damaged, the overall life of the bridge is affected, in order to avoid safety problems, the expansion joint needs to be frequently maintained or replaced manually, and the bridge maintenance cost is increased. UTILITY MODEL CONTENTS

[0005] The utility model discloses a filling type seamless expansion device to solve the above-mentioned problems in the prior art.

[0006] The utility model discloses a filling type seamless expansion device to solve the above-mentioned problems in the prior art.

[0007] Compared with the prior art, the present scheme has the following advantages and beneficial effects:

[0008] The structure body in the scheme refers to the main part of a bridge or other building, and the filling seamless expansion device in the scheme is used at the position where the structure body leaves a beam joint. In the scheme, the fixed parts are arranged on both sides of the beam joint, the fixed parts are connected into an integrated framework support structure through the connecting parts, the reliability and strength of the two fixed parts embedded in the structure body can be improved, the support force on the elastoplastic filling material can be improved, the wheel load can be borne, large deformation can be avoided, the overall service life of the structure body can be prolonged, the risk of safety problems can be reduced, frequent maintenance or replacement of the filling seamless expansion device in the scheme is avoided, and the bridge maintenance cost is reduced.

[0009] In addition, the fixed part in the scheme has a simple structure, can reduce the production and manufacturing cost, and is convenient to install and connect.

[0010] Further, the fixed part comprises a connecting top plate, a pre-embedded plate, and a pre-embedded rod, a support part is connected between the connecting top plate and the pre-embedded plate, and the pre-embedded rod is connected with the bottom end of the pre-embedded plate.

[0011] Beneficial effects: In the fixed part in the scheme, the connecting top plate and the pre-embedded plate are connected into an integrated structure through the support part, and the pre-embedded rod is connected with the bottom end of the pre-embedded plate. In this way, the pre-embedded rod is convenient to embed in the structure body, and the support part and the connecting top plate are convenient to embed in the elastoplastic filling material. After the pre-embedded rod is combined with the structure body into an integrated structure, the pre-embedded rod can provide more stable support for the support rod and the elastoplastic filling material in the slot.

[0012] Further, the pre-embedded rod is provided in multiple roots, and the multiple pre-embedded rods are sequentially and spacedly distributed along the length direction of the pre-embedded plate.

[0013] Beneficial effects: In the scheme, the multiple pre-embedded rods are spacedly distributed on the connecting top plate, so that the entire structure can be ensured to be in a stable state, thereby enhancing the support strength of the entire structure. Meanwhile, the arrangement of the multiple pre-embedded rods facilitates segmented assembly to form a segmented framework before embedding when the filling seamless expansion device in the scheme is assembled.

[0014] Further, the pre-embedded rod is in a U shape.

[0015] Beneficial effects: The U-shaped pre-embedded rod can enhance the contact area between the pre-embedded rod and the structure body, thereby enhancing the support strength.

[0016] Further, a reinforcing rib is provided, the reinforcing rib is transversely arranged on the multiple pre-embedded rods, and the reinforcing rib is connected with the multiple pre-embedded rods.

[0017] Beneficial effect: the setting of the reinforcing rib can strengthen the connection between the fixing member and the structure main body, and can improve the overall structural strength of the expansion device.

[0018] Further, the support member is provided with a plurality of support members, and the plurality of support members are sequentially and spacedly distributed along the length direction of the connecting top plate.

[0019] Beneficial effect: the setting of the plurality of support members can not only enhance the connection strength between the connecting top plate and the embedded plate, but also improve the supporting effect of the elastoplastic filling material, so as to further bear the wheel load.

[0020] Further, the upper surface of the embedded plate is coated with an anti-adhesive agent.

[0021] Beneficial effect: the elastoplastic filling material is prevented from adhering to the embedded plate, so that the elastoplastic filling material can be easily removed when it needs to be replaced later.

[0022] Further, the top end of the beam joint is provided with a cross joint plate, and the two sides of the cross joint plate are respectively placed on the two fixing members.

[0023] Beneficial effect: the cross joint plate in the present scheme can shield and protect the beam joint, and can protect and shield the joint filling material and the cementing material filled in the beam joint later, so as to avoid the waste falling into the beam joint when assembling other structures of the expansion device in the slot.

[0024] Further, the upper part of the beam joint is filled with joint filling material.

[0025] Beneficial effect: the joint filling material in the present scheme can play a certain buffering and damping role.

[0026] Further, a filling gap is left between the joint filling material and the cross joint plate, and cementing material is poured in the filling gap.

[0027] Beneficial effect: the cementing material can be made of the same material as the joint filling material, and the cementing material in the present scheme can prevent water vapor from eroding the steel plate in the structure main body from below.

[0028] In summary, the filled seamless expansion device of the present application is an innovative bridge technology, which realizes the continuous and smooth bridge surface through unique structural design, thereby improving the comfort and safety of driving. The main advantages of this device include:

[0029] (1) Improve driving comfort and safety: the expansion device eliminates the unevenness problem caused by traditional expansion joints, so that there is no obvious joint on the bridge surface, which not only improves the driving experience and reduces the noise generated during vehicle driving, but also avoids traffic accidents caused by damage and failure of traditional expansion joints.

[0030] (2) Economic: due to its relatively simple structure, can save costs in the manufacturing and installation process. At the same time, due to the setting of two fixed parts, under the action of the connecting piece, the two fixed parts are connected into one, forming an embedded skeleton structure, improving the support of the elastic-plastic filler, so as to be able to withstand greater wheel load, and can reduce the damage to the elastic-plastic filler, so it is not necessary to frequently repair or replace the expansion joint, so in the long run, the bridge maintenance cost can be greatly reduced.

[0031] (3) Reduce traffic interference: after canceling the traditional expansion joint which is easy to damage and needs regular inspection and repair, the traffic interruption caused by maintenance work is greatly reduced, which is beneficial to keep the road unobstructed.

[0032] (4) Enhance the anti-seismic ability: the device is equivalent to adding an elastic buffer structure between the beam body, which helps to improve the overall anti-seismic performance of the bridge structure.

[0033] (5) Prolong the service life: through the improvement of the connection mode of the beam body, the structural damage caused by temperature changes, vehicle impact and other factors in daily use is reduced, thereby increasing the overall life of the bridge. BRIEF DESCRIPTION OF DRAWINGS

[0034] The drawings described herein are used to provide further understanding of the embodiments of the present application, constitute a part of this application, and do not constitute a limitation on the embodiments of the present application. In the drawings:

[0035] Figure 1 is a longitudinal sectional view of the embodiment of the present application without a cast-in-place concrete leveling layer of a filled seamless expansion device;

[0036] Figure 2 is a longitudinal sectional view of the embodiment of the present application with a cast-in-place concrete leveling layer of a filled seamless expansion device;

[0037] Figure 3 is Figure 2 is a sectional view of A-A;

[0038] Figure 4 is Figure 2 is a sectional view of C-C;

[0039] Figure 5 is a front view of the fixed part in the embodiment of the filled seamless expansion device of the present application.

[0040] Markings in the drawings and corresponding part names:

[0041] Bridge member 1, asphalt concrete surface layer 2, cast-in-place concrete leveling layer 3, beam joint 4, elastoplastic filler 5, fixing part 6, connecting top plate 6-1, supporting part 6-2, pre-embedded plate 6-3, pre-embedded rod 6-4, connecting part 7, reinforcing bar 8, cementing material 9, gap filling foam 10, cross joint plate 11. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with examples and drawings, and the illustrative embodiment of the utility model and its description are only used for explaining the utility model and do not serve as the limitation of the utility model.

[0043] Example 1

[0044] As Figure 1 shown, the present embodiment 1 provides a filling type seamless expansion device, including fixing parts 6 arranged on both sides of the beam joint 4 of the structure main body, a notch is reserved on the top of the structure main body and above the beam joint 4, the width of the notch is greater than the width of the beam joint 4, and the elastoplastic filler 5 is filled in the notch, and specifically:

[0045] The structure main body in the present embodiment refers to the main part of the bridge or other buildings, and the structure main body includes two bridge members 1, the bridge member 1, and the two bridge members 1 can be both beam bodies or one side is a beam body and the other side is a back wall of the abutment, and the top of the two bridge members 1 is also paved with an asphalt concrete surface layer 2, as Figure 2 shown, in another embodiment, a cast-in-place concrete leveling layer 3 can also be arranged between the bridge member 1 and the asphalt concrete surface layer 2 according to needs. In the present embodiment, the asphalt concrete surface layer 2 at the upper end of the beam joint 4 is provided with the above-mentioned reserved notch. If the cast-in-place concrete leveling layer 3 is arranged, the beam joint 4 is also arranged between the cast-in-place concrete leveling layers 3 at the top of the two bridge members 1.

[0046] The elastoplastic filler 5 can be made of existing materials, for example, the elastoplastic modified asphalt mixture filler can be an existing high-elasticity asphalt concrete material such as epoxy asphalt mixture or rubber asphalt mixture, without specific limitation.

[0047] The upper part of the fixing part 6 is pre-embedded into the elastoplastic filler 5, and the lower part of the fixing part 6 is pre-embedded into the structure main body, as Figure 1 and Figure 2 shown, the lower part of the fixing part 6 is pre-embedded into the bridge member 1, and if the cast-in-place concrete leveling layer 3 is arranged, the middle and lower parts of the fixing part 6 are sequentially pre-embedded into the cast-in-place concrete leveling layer 3 and the bridge member 1, and the connecting part 7 is connected between the upper parts of the two fixing parts 6, in combination with Figure 3As shown, the connecting piece 7 in the embodiment is V-shaped or U-shaped, which can increase the contact area of the connecting piece 7 embedded in the elastoplastic filling material 5, thereby expanding the support area. The connecting piece 7 is provided in plurality, and the plurality of connecting pieces 7 are distributed at intervals. The two ends of the connecting piece 7 are respectively welded and fixed with the upper parts of the two fixing pieces 6, thereby connecting the two fixing pieces 6 into one body, improving the support effect on the elastoplastic filling material 5, thereby being able to bear the load of the wheel, avoiding large deformation, improving the overall service life of the bridge, and reducing the maintenance cost.

[0048] Embodiment 2

[0049] As shown in Figures 1-5 , a filling type seamless expansion device, the difference between the embodiment and embodiment 1 is that: the fixing piece 6 in the embodiment includes a connecting top plate 6-1, a pre-embedded plate 6-3 and a pre-embedded rod 6-4, a support piece 6-2 is connected between the connecting top plate 6-1 and the pre-embedded plate 6-3, and the pre-embedded rod 6-4 is connected with the bottom end of the pre-embedded plate 6-3. In the embodiment, the connecting top plate 6-1, the pre-embedded plate 6-3, the pre-embedded rod 6-4 and the support piece 6-2 are connected with each other by welding.

[0050] As shown in Figure 5 , the pre-embedded plate 6-3 and the connecting top plate 6-1 are both full-length steel strip or steel plate structures, and the pre-embedded rod 6-4 and the support piece 6-2 are steel bar structures. In the actual installation process, a plurality of full-length steel strips can be prefabricated and assembled and welded on site according to the actual length of the beam joint 4 to form a whole, which is convenient for production and processing, and also convenient for transportation and installation.

[0051] The pre-embedded rod 6-4 in the embodiment is provided in plurality, and the plurality of pre-embedded rods 6-4 are sequentially and intervally distributed along the length direction of the pre-embedded plate 6-3, which is convenient for on-site construction and assembly, and as shown in Figure 4 , the pre-embedded rod 6-4 is U-shaped, which can increase the contact area between the pre-embedded rod 6-4 and the structure main body, thereby enhancing the support strength. The width of the pre-embedded plate 6-3 in the embodiment is relatively wide, which is convenient for connecting and fixing with the two ends of the pre-embedded rod 6-4. Specifically, the two ends of the U-shaped pre-embedded rod 6-4 are respectively perpendicular to the bottom end of the pre-embedded plate 6-3 and are welded and fixed.

[0052] As shown in combination with 1, the filling type seamless expansion device in the embodiment further includes a reinforcing rib 8, which is transversely provided on the plurality of pre-embedded rods 6-4 and connected with the plurality of pre-embedded rods 6-4. In each fixing piece 6 in the embodiment, the reinforcing rib 8 is provided in two, and the two reinforcing ribs 8 are respectively connected with the two sides of the inside of the pre-embedded rod 6-4. The reinforcing rib 8 can be fixed with the pre-embedded rod 6-4 by wire or by welding or other ways, which is not limited here. The reinforcing rib 8 can strengthen the connectivity between the fixing piece 6 and the bridge member 1

[0053] Combine Figure 5 As shown, there are multiple support members 6-2, which are spaced apart in sequence along the length direction of the connecting top plate 6-1, and the two ends of the support members 6-2 are respectively perpendicular to the connecting top plate 6-1 and the embedded plate 6-3 and are welded and fixed. The connecting top plate 6-1, support members 6-2, embedded plate 6-3 and embedded rod 6-4 are connected to each other to form an embedded steel skeleton structure, which can provide strong support and withstand wheel loads. Figure 3 and Figure 5 As shown, multiple connecting members 7 are distributed in sequence along the length direction of the connecting top plate 6-1 in the fixing member 6, and are arranged crosswise with multiple supporting members 6-2 at intervals. The two ends of the connecting member 7 are respectively welded and fixed to the bottom end of the connecting top plate 6-1.

[0054] Furthermore, in another embodiment, an anti-sticking agent is coated on the upper surface of the embedded plate 6 - 3 to facilitate the smooth removal of the elastic-plastic filling material 5 when the elastic-plastic filling material 5 needs to be replaced later.

[0055] When installing the fixing part 6, the embedded plate 6-3 in the fixing part 6 is flush with the bottom surface of the asphalt concrete surface layer 2, and the support part 6-2 and the connecting top plate 6-1 are located in the groove, so as to facilitate the later filling of the elastic-plastic filling material 5 and pre-embedded therein, and the embedded plate 6-3 and the embedded rod 6-4 are located in the bridge component 1. If a cast-in-place concrete leveling layer 3 is provided, they are pre-embedded in the bridge component 1 and the cast-in-place concrete leveling layer 3, and the ends of the embedded plates 6-3 in the two fixing parts 6 that face each other are flush with the two sides of the beam joint 4 respectively.

[0056] Example 3

[0057] The difference between this embodiment and embodiment 2 is that: Figure 1 and Figure 2 As shown, a cross-seam plate 11 is provided at the top of the beam seam 4 , and both sides of the cross-seam plate 11 are respectively placed on two fixing members 6 . Specifically, both sides of the cross-seam plate 11 are respectively freely placed on the embedded plates 6 - 3 in the two fixing members 6 .

[0058] The upper part of the beam joint 4 is filled with filler. The filler in this embodiment is filler foam 10, which can play a certain role in buffering and vibration reduction. Furthermore, in this embodiment, a filling gap is left between the filler foam 10 and the cross-joint plate 11, and a binder 9 is poured in the filling gap. The binder 9 can be made of the same material as the filler. In this solution, the binder 9 can prevent water vapor from corroding the steel plate in the main structure from below, thereby protecting the steel plate below and further improving the service life of the main structure.

[0059] The construction steps of the filled seamless telescopic device in this embodiment are as follows:

[0060] (1) prefabricate and weld the assembly of the embedded plate 6-3 and the embedded rod 6-4, and embed the assembly into two bridge members 1, the two bridge members 1 can be both beam bodies or one side beam body and the other side abutment back wall, if the bridge is provided with the cast-in-place concrete leveling layer 3, the embedded plate 6-3 below still needs to leave the height of the cast-in-place concrete leveling layer 3;

[0061] (2) construct the cast-in-place concrete leveling layer 3 (if any);

[0062] (3) fill the beam joint 4 with the joint filling foam 10, and leave a space of 30 mm at the upper part of the joint filling foam 10;

[0063] (4) pour the cementing material 9 at the space left at the upper part of the beam joint 4;

[0064] (5) assemble and weld the full-length connecting top plate 6-1, the support 6-2 and the connecting piece 7 of the fixing piece 6, form a framework in sections, and then weld the support 6-2 to the top end of the embedded plate 6-3 on site;

[0065] (6) clean the slot;

[0066] (7) coat a layer of anti-sticking agent on the upper surface of the embedded plate 6-3;

[0067] (8) pour the elastoplastic filling material.

[0068] It is to be understood that the above description of the disclosed embodiments is intended to be illustrative and not restrictive. Many modifications and variations to the disclosed embodiments will be apparent to those skilled in the art from this disclosure. Thus, it is intended that the scope of the present application should not be limited to the described embodiments but should be given the broadest interpretation to the general inventive concepts herein expressed.

[0069] In the description of the present application, it should be noted that the terms "first", "second", "third" and the like are used only to distinguish descriptions and cannot be understood as indicating or implying relative importance.

[0070] In the description of the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings, and are used only to illustrate the relative positional relationship between the components or constituent parts, and do not particularly limit the specific installation orientation of the components or constituent parts.

[0071] In the description of the present document, some terms can be used to represent the positional or positional relationship in addition to the meaning of the terms. For example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0072] In the description of the present document, the terms "mounting", "setting", "provided with", "connected", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally configured; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0073] The structure, proportion, size, etc. drawn in the drawings attached in the present application are only used to cooperate with the content disclosed in the present technical disclosure, so that those skilled in the art can understand and read, and do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0074] The terms used in the present document are those general terms currently widely used in the art in consideration of the functions of the present disclosure, but these terms can vary according to the intention of those of ordinary skill in the art, precedents, or new technology in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present disclosure. Therefore, the terms used in the document should not be understood as mere names, but based on the meaning of the terms and the overall description of the present disclosure.

[0075] Flowcharts or words are used in the present document to illustrate the operation steps performed according to the embodiments of the present application. It should be understood that the operation steps in the embodiments of the present application are not necessarily executed in the order recorded. On the contrary, various steps can be processed in reverse order or simultaneously as needed. At the same time, other operations can be added to these processes, or one or more steps of operation can be removed from these processes.

[0076] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A filled seamless expansion joint comprising a fixing member provided on both sides of a beam joint of a structural body, a notch being provided at the top of the structural body directly above the beam joint, the width of the notch being greater than the width of the beam joint, and an elastoplastic filler being filled in the notch, characterized in that, The upper part of the fixing member is embedded in the elastic-plastic filling material, the lower part of the fixing member is embedded in the structure body, and the upper parts of the two fixing members are connected by a connecting member.

2. A fill-and-go seamless expansion joint as defined in claim 1, wherein, The fixing member comprises a connecting top plate, an embedded plate and an embedded rod, the connecting top plate and the embedded plate are connected by a support member, and the embedded rod is connected with the bottom end of the embedded plate.

3. A fill-and-go seamless expansion joint as defined in claim 2, wherein, The embedded rod is provided in multiple, and the multiple embedded rods are sequentially and spacedly distributed along the length direction of the embedded plate.

4. A fill-and-go seamless expansion joint as defined in claim 3, wherein, The embedded rod is in U shape.

5. A fill-and-go seamless expansion joint as defined in claim 4, wherein, A reinforcing rib is further included, the reinforcing rib is transversely arranged on the multiple embedded rods, and the reinforcing rib is connected with the multiple embedded rods.

6. A fill-and-go seamless expansion joint as defined in claim 2, wherein, The support member is provided in multiple, and the multiple support members are sequentially and spacedly distributed along the length direction of the connecting top plate.

7. A fill-and-go seamless expansion joint as defined in claim 2, wherein, The upper surface of the embedded plate is coated with an anti-sticking agent.

8. A fill-and-go seamless expansion joint according to any one of claims 1-7, characterized in that The top end of the beam joint is provided with a cross joint plate, and the two sides of the cross joint plate are respectively placed on the two fixing members.

9. A fill-and-go seamless expansion joint as defined in claim 8, wherein, The upper part of the beam joint is filled with a joint filling material.

10. A fill-and-go seamless expansion joint as defined in claim 9, wherein, A filling gap is left between the joint filling material and the cross joint plate, and a cementing material is poured in the filling gap.

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