Assembly type hollow slab transverse limiting device and bridge with same

Abstract

The utility model discloses a kind of transverse limiting device of fabricated hollow slab and bridge with the limiting device, the transverse limiting device of fabricated hollow slab, including several along bridge longitudinal axis direction arrangement and erect in fabricated hollow slab of cap beam top surface, reserved hinge joint between adjacent two hollow boards, further include transverse limiting structure, transverse limiting structure includes: anchoring base, fixed installation in the top side edge of cap beam by anchoring member, its hinge joint side is equipped with the linear clamping cavity extending along bridge longitudinal axis direction;And integrated restraint component, including integrally-formed lower embedded segment, upper intervention section, lower embedded segment is fixed in the linear clamping cavity of anchoring base, upper intervention section vertically extends into hinge joint.The utility model has the beneficial effects that: through reliable transverse limiting structure, effectively limit fabricated hollow slab in various working conditions Transverse displacement, improve the stability and security of structure, while enhancing the durability of device, reduce later maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of bridge reinforcement and renovation technology, and relates to a prefabricated hollow slab lateral limiting device and a bridge with the limiting device, especially a prefabricated hollow slab lateral limiting device that can effectively control lateral displacement and improve durability and a bridge with the limiting device. Background Technology

[0002] In bridge engineering and prefabricated construction, prefabricated hollow slabs are widely used due to their excellent mechanical properties, economy, and ease of construction. During installation, hollow slabs are typically placed on supporting structures such as cap beams, with adjacent slabs connected by hinged joints. Traditional methods of lateral restraint for hollow slabs mainly rely on the concrete within the hinged joints and some simple structural measures, such as setting a small number of connecting steel bars in the hinged joints. The principle is to connect adjacent hollow slabs into a whole through the bonding effect of the hinged concrete and the constraint of the steel bars, thereby limiting the lateral displacement of the hollow slabs. For example, patent CN205116013U discloses a laterally reinforced prefabricated hollow slab beam bridge structure. This application sets multiple high-strength lateral reinforcement structures within the concrete pavement area, with these structures spaced laterally along the bridge structure; the lateral reinforcement structures are high-performance concrete containing high-performance fibers, and the high-performance concrete contains steel reinforcement bundles. However, in actual operation, due to the dynamic effects of traffic loads, structural expansion and contraction caused by temperature changes, and the impact of natural disasters such as earthquakes, the lateral displacement of hollow slabs cannot be effectively limited by the hinged concrete and a small amount of connecting steel bars alone. Under long-term repeated loading, concrete is prone to cracking and spalling, which weakens the connection effect of the hinges and gradually increases the lateral displacement of the hollow slabs. When the displacement is too large, it may cause misalignment between adjacent hollow slabs, which not only affects driving comfort and safety, but may even lead to serious accidents such as hollow slab detachment, and also increases the later maintenance costs.

[0003] Therefore, there is an urgent need for a prefabricated hollow slab lateral limiting device that can effectively limit the lateral displacement of hollow slabs under various working conditions, improve the stability and safety of the structure, enhance the durability of the device, and reduce the cost of later maintenance. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application proposes a lateral limiting device for prefabricated hollow slabs and a bridge incorporating the device, addressing the problems of poor lateral displacement control, insufficient durability, and difficult repair in the prior art. The limiting device of this application, through a reliable lateral limiting structure, effectively restricts the lateral displacement of prefabricated hollow slabs under various working conditions, improving structural stability and safety, while simultaneously enhancing the durability of the device and reducing subsequent maintenance costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The present invention discloses a lateral limiting device for prefabricated hollow slabs, comprising a plurality of prefabricated hollow slabs arranged along the longitudinal axis of the bridge and mounted on the top surface of the cap beam, wherein a hinge joint is reserved between adjacent hollow slabs, and further comprising a lateral limiting structure for limiting the lateral displacement of the prefabricated hollow slabs, the lateral limiting structure comprising: An anchorage base, fixedly installed on the top side edge of the cap beam by anchors, has a linear clamping cavity extending along the longitudinal axis of the bridge on its hinge side; and The integrated constraint component includes an integrally formed lower embedding section and an upper intervention section. The lower embedding section is fixed in the linear clamping cavity of the anchor base, and the upper intervention section extends vertically into the hinge joint.

[0006] As a preferred embodiment of this application, the anchoring base includes a base plate, which is attached to the top side edge surface of the cover beam and fixedly connected to the cover beam by a plurality of anchors; two constraint clamping members are symmetrically arranged on the surface of the base plate away from the cover beam, forming a linear clamping cavity between them that is adapted to the lower embedded section.

[0007] As a preferred embodiment of this application, the longitudinal width of the linear clamping cavity is adapted to the thickness of the lower embedding section, for guiding and fixing the integrated constraint member.

[0008] As a preferred embodiment of this application, the integrated constraint member is a rectangular sheet structure with a thickness less than the width of the hinge.

[0009] As a preferred embodiment of this application, the surface of the integrated constraint member is provided with raised or anti-slip textures.

[0010] As a preferred embodiment of this application, the two constraint clamping members are horizontally fixed to the surface of the substrate away from the cover beam and are located at the same horizontal height, forming a linear clamping cavity between the two constraint clamping members.

[0011] As a preferred embodiment of this application, the constraint clamping member is a horizontally arranged right-angled triangular plate, and the first right-angled sides of the two constraint clamping members are attached to and fixed on the surface of the base plate away from the cap beam. The second right-angled sides of the two constraint clamping members form a linear clamping cavity opposite each other in the longitudinal axis direction of the bridge.

[0012] Alternatively, the constraint clamping member is an L-shaped metal component, including a horizontally fixed surface and a vertically connected constraint surface. In the two constraint clamping members: the horizontally fixed surface is fixed to the surface of the base plate away from the cover beam and is located at the same horizontal height, and the vertical constraint surfaces are arranged opposite each other to form a linear clamping cavity.

[0013] As a preferred embodiment of this application, the surface of the vertical clamping plate is machined with several vertically arranged guide grooves, and the lower embedded section of the integrated constraint member is provided with a guide protrusion that matches the positioning protrusion. When the vertical clamping plate is inserted into the linear clamping cavity, it can be quickly guided into the linear clamping cavity by the interlocking guide protrusions and guide grooves. Once inserted into the appropriate position, the two are fixed by welding or fasteners.

[0014] As a preferred embodiment of this application, the insertion depth of the integral constraint member into the hinge slot is 1 / 2 or more of the total depth of the hinge slot.

[0015] This application also provides a bridge having the aforementioned prefabricated hollow slab lateral limiting device.

[0016] The working principle of the prefabricated hollow slab lateral limiting device of this application is based on the direct constraint of the lateral displacement of the prefabricated hollow slab. The anchoring base is fixedly installed on the cap beam by anchors, serving as the basic support for the entire lateral limiting structure. Then, the integrated constraint member extends from the cap beam into the hinge joints on both sides of the prefabricated hollow slab. When the prefabricated hollow slab is subjected to lateral loads, the integrated constraint member can directly block the lateral movement tendency of the prefabricated hollow slab, transferring the lateral force to the cap beam, thereby limiting the lateral displacement of the prefabricated hollow slab.

[0017] The beneficial effects of this utility model are: 1. Significantly improved displacement control: Compared with existing technologies, this device uses an integrated constraint component that extends directly into the hinge joint for lateral restraint, which can more effectively restrain the lateral displacement of the hollow slab, greatly improve the stability of the structure, reduce the safety risks caused by excessive lateral displacement, and ensure traffic safety and the normal use of the building structure.

[0018] 2. Reduced maintenance costs: Due to the device's high durability and stable displacement control, the number of repairs required for hollow slabs due to excessive lateral displacement is greatly reduced. Over the entire lifespan, significant maintenance costs can be saved, including repair material costs, construction costs, and indirect economic losses caused by traffic closures.

[0019] 3. Convenient Construction: The device has a simple structure and is easy to install. The anchoring base is quickly connected to the cap beam through high-strength anchors, and the integrated restraint component can be directly inserted into the hinge joint. It does not require complicated construction processes and large equipment, which can effectively shorten the construction period and improve construction efficiency. Attached Figure Description

[0020] Figure 1 This is a cross-sectional schematic diagram of a prefabricated hollow slab lateral limiting device according to an embodiment of the present invention.

[0021] Figure 2This is a side view of an embodiment of the assembled hollow slab lateral limiting device of the present invention.

[0022] Figure 3 This is a schematic diagram of the lateral limiting structure according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the lateral limiting structure of another embodiment of the present invention.

[0024] Figure 5 This is a front view of the substrate of this utility model.

[0025] Figure 6 This is a front view of the constraint clamping member in one embodiment of the present utility model.

[0026] Figure 7 This is a front view of the constraint clamping member in another embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram showing the positions of the substrate and the integrated constraint member in one embodiment of the present invention.

[0028] Figure 9 This is a front view of the substrate and the integrated constraint member in one embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram showing the positions of the substrate and the integrated constraint member in another embodiment of the present invention.

[0030] Figure 11 This is a front view of the substrate and the integrated constraint member in another embodiment of the present invention.

[0031] Among them, 1-prefabricated hollow slab; 11-hinge joint; 2-lateral limiting structure; 21-anchor base; 211-base plate; 212-constraint clamping component; 2121-horizontal fixing surface; 2122-vertical constraint surface; 213-anchor; 22-integrated constraint component; 3-cap beam. Detailed Implementation

[0032] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application.

[0033] It should be noted that the process equipment or apparatus not specifically mentioned in the following embodiments are all conventional equipment or apparatus in the art.

[0034] Furthermore, it should be understood that the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, does not preclude the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, unless otherwise stated. It should also be understood that the combined connection relationship between one or more devices / apparatus mentioned in this application does not preclude the existence of other devices / apparatus before or after the combined devices / apparatus, or the insertion of other devices / apparatus between these explicitly mentioned devices / apparatus, unless otherwise stated. Moreover, unless otherwise stated, the numbering of each method step is merely a convenient tool for identifying each method step, and not for limiting the order of the method steps or limiting the scope of implementation of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this application.

[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0036] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "axial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] The present application will be further described below with reference to specific embodiments, but the scope of protection of the present application is not limited thereto.

[0040] like Figure 1 and Figure 2 As shown, the present invention provides a lateral limiting device for prefabricated hollow slabs, comprising a plurality of prefabricated hollow slabs 1 arranged along the longitudinal axis of the bridge and mounted on the top surface of the cap beam 3, with a hinge joint 11 reserved between adjacent hollow slabs. The device is characterized by further including a lateral limiting structure 2 for limiting the lateral displacement of the prefabricated hollow slabs 1, the lateral limiting structure 2 comprising: Anchor base 21 is fixedly installed on the top side edge of cap beam 3 by anchor 213, and its hinge joint 11 side is provided with a linear clamping cavity extending along the longitudinal axis of the bridge; and The integrated constraint member 22 includes an integrally formed lower embedding section and an upper intervention section. The lower embedding section is fixed in the linear clamping cavity of the anchor base 21, and the upper intervention section extends vertically into the hinge joint 11.

[0041] like Figure 2 , Figure 3 and Figure 4 As shown, the anchoring base 21 includes a base plate 211, which is attached to the top side edge surface of the cap beam 3 and fixedly connected to the cap beam 3 by multiple anchors 213. Two constraint clamping members 212 are symmetrically arranged on the surface of the base plate 211 away from the cap beam 3, forming a linear clamping cavity between them that adapts to the lower embedded section. In this embodiment, the anchors 213 are high-strength chemical anchors. The base plate 211 is installed on the top side edge of the cap beam 3 by multiple chemical anchors, ensuring a reliable connection between the device and the cap beam.

[0042] like Figure 1 and Figure 2 As shown, the longitudinal width of the linear clamping cavity is adapted to the thickness of the lower embedded section, and is used to guide and fix the integrated constraint member 22.

[0043] like Figure 7As shown, the integrated constraint member 22 is a rectangular sheet structure. The thickness of the lower embedding section and the upper intervention section can be the same or different. However, the thickness of the upper intervention section is at least slightly smaller than the width of the hinge joint 11 to ensure that the upper intervention section can be smoothly inserted into the hinge joint. In this embodiment, the integrated constraint member 22 is a rectangular sheet with a uniform thickness. The surface of the integrated constraint member 22 is provided with protrusions or anti-slip textures to further enhance the friction with the side of the concrete or hollow slab in the hinge joint and improve the limiting effect.

[0044] like Figure 8 As shown, the two constraint clamping members 212 are horizontally fixed on the surface of the base plate 211 away from the cover beam 3 and are located at the same horizontal height, forming a linear clamping cavity between the two constraint clamping members 212.

[0045] like Figure 6 and Figure 8 As shown, the constraint clamping member 212 is a horizontally arranged right-angled triangular plate. The first right-angled sides of the two constraint clamping members are attached to and fixed on the surface of the base plate away from the cover beam. The second right-angled sides of the two constraint clamping members form a linear clamping cavity opposite each other in the longitudinal axis direction of the bridge.

[0046] like Figure 10 and Figure 11 As shown, the constraint clamping member 212 is an L-shaped metal component, including a horizontally fixed surface 2121 and a vertically constraining surface 2122 connected vertically. Among the two constraint clamping members 212, the horizontally fixed surface 2121 is fixed to the surface of the base plate 211 away from the cover beam and is located at the same horizontal height. The two vertically constraining surfaces 2122 are arranged vertically opposite to each other to form a linear clamping cavity.

[0047] In some embodiments of this application, the surface of the vertical constraint surface 2122 is machined with several vertically arranged guide grooves, and the corresponding lower embedded section of the integrated constraint member is provided with a guide protrusion adapted to the positioning protrusion. When the vertical constraint surface 2122 is inserted into the linear clamping cavity, it can be quickly guided into the linear clamping cavity by the mutually engaging guide protrusions and guide grooves. When inserted into the appropriate position, the two are fixed by welding or fasteners (such as high-strength bolts).

[0048] like Figure 1 and Figure 2 As shown, the insertion depth of the integral constraint member 22 into the hinge 11 accounts for 1 / 2 or more of the total depth of the hinge 11.

[0049] This application also provides a bridge having the aforementioned prefabricated hollow slab lateral limiting device.

[0050] The lateral limiting device for prefabricated hollow slabs in this application is based on the direct constraint of the lateral displacement of the prefabricated hollow slab. Anchor base 21 is fixedly installed on cap beam 3 via anchors 213, serving as the basic support for the entire lateral limiting structure. Then, an integrated constraint member 22 extends from the cap beam 3 into the hinge joints 11 on both sides of the prefabricated hollow slab 1. When the prefabricated hollow slab 1 is subjected to a lateral load, the integrated constraint member 22 can directly block the lateral movement tendency of the prefabricated hollow slab 1, transferring the lateral force to the cap beam 3, thereby limiting the lateral displacement of the prefabricated hollow slab 1.

[0051] The above embodiments are for illustrating the implementation schemes disclosed in this utility model and should not be construed as limiting the utility model. Furthermore, various modifications listed herein, as well as variations in the methods and compositions of the utility model, will be apparent to those skilled in the art without departing from the scope and spirit of this utility model. Although this utility model has been specifically described in conjunction with various specific preferred embodiments, it should be understood that this utility model should not be limited to these specific embodiments. In fact, various modifications as described above that are obvious to those skilled in the art to obtain the utility model should be included within the scope of this utility model.

Claims

1. A prefabricated hollow slab lateral limiting device, comprising a plurality of prefabricated hollow slabs (1) arranged along the longitudinal axis of the bridge and mounted on the top surface of the cap beam (3), wherein a hinge joint (11) is reserved between adjacent hollow slabs, characterized in that, It also includes a lateral limiting structure (2) for restricting the lateral displacement of the assembled hollow slab (1), the lateral limiting structure (2) comprising: An anchorage base (21) is fixedly installed on the top side edge of the cap beam (3) by anchors (213), and its hinge joint (11) side is provided with a linear clamping cavity extending along the longitudinal axis of the bridge; and The integral constraint member (22) includes an integrally formed lower embedding section and an upper intervention section. The lower embedding section is fixed in the linear clamping cavity of the anchor base (21), and the upper intervention section extends vertically into the hinge (11).

2. The lateral limiting device for assembled hollow slabs according to claim 1, characterized in that: The anchoring base (21) includes a base plate (211), which is attached to the top side edge surface of the cover beam (3) and fixedly connected to the cover beam (3) by a plurality of anchors (213); two constraint clamping members (212) are symmetrically arranged on the surface of the base plate (211) away from the cover beam (3), and a linear clamping cavity adapted to the lower embedded section is formed between the two.

3. The lateral limiting device for assembled hollow slabs according to claim 2, characterized in that: The longitudinal width of the linear clamping cavity is adapted to the thickness of the lower embedded section, and is used to guide and fix the integrated constraint member (22).

4. The lateral limiting device for assembled hollow slabs according to claim 1, characterized in that: The integrated constraint member (22) is a rectangular sheet structure with a thickness less than the width of the hinge (11).

5. The lateral limiting device for assembled hollow slabs according to claim 1, characterized in that: The surface of the integrated constraint member (22) is provided with raised or anti-slip textures.

6. The lateral limiting device for assembled hollow slabs according to claim 2, characterized in that: The two constraint clamps (212) are horizontally fixed to the surface of the base plate (211) away from the cover beam (3) and are located at the same horizontal height, forming a linear clamping cavity between the two constraint clamps (212).

7. The lateral limiting device for assembled hollow slabs according to claim 6, characterized in that: The constraint clamping member (212) is a horizontally arranged right-angled triangular plate. The first right-angled sides of the two constraint clamping members (212) are attached to and fixed on the surface of the base plate (211) away from the cap beam (3). The second right-angled sides of the two constraint clamping members (212) form a linear clamping cavity relative to each other in the longitudinal axis direction of the bridge.

8. The lateral limiting device for assembled hollow slabs according to claim 2, characterized in that: The constraint clamping member (212) is an L-shaped metal component, including a horizontally fixed surface (2121) and a vertically constraining surface (2122) connected vertically. Among the two constraint clamping members (212), the horizontally fixed surface (2121) is fixed to the surface of the base plate (211) away from the cover beam and is located at the same horizontal height. The two vertically constraining surfaces (2122) are arranged vertically opposite to each other to form a linear clamping cavity.

9. The lateral limiting device for assembled hollow slabs according to claim 1, characterized in that: The depth of the insertion of the integral constraint member (22) into the hinge (11) is 1 / 2 or more of the total depth of the hinge (11).

10. A bridge having the prefabricated hollow slab lateral limiting device as described in any one of claims 1 to 9.

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