Beam body horizontal displacement self-adaptive anti-pulling device

Abstract

The utility model discloses a beam body horizontal displacement self-adaptive anti-pulling device which comprises an anti-pulling rod, the upper end of the anti-pulling rod is anchored on a steel beam, the lower end of the anti-pulling rod is anchored in a cover beam below the steel beam, a horizontal moving channel is arranged in the cover beam, the anti-pulling rod is located in the horizontal moving channel, and the anti-pulling rod is located in the horizontal moving channel. The radial size of the horizontal moving channel is larger than the outer diameter of the anti-pulling rod. Due to the fact that the horizontal moving channel is arranged in the bent cap, the anti-pulling rod is located in the horizontal moving channel, and the radial size of the horizontal moving channel is larger than the outer diameter of the anti-pulling rod, when the beam body moves horizontally, the anti-pulling rod can be self-adaptive in the horizontal moving channel, and when the beam body warps upwards and moves vertically, the anti-pulling rod can be self-adaptive in the horizontal moving channel. The anchoring structures at the two ends of the anti-pulling rod can restrain the anti-pulling rod, horizontal displacement of the beam body cannot be excessively intervened while the structural safety of the beam body is guaranteed, the stress level of the beam body can be prevented from being increased, and the service life of the anti-pulling device can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge structures, and particularly relates to an uplift resistance device with self-adaptive horizontal displacement of a beam body. Background Art

[0002] Due to its relatively light self-weight, a steel structure bridge is prone to upward warping at the fulcrum position, and an uplift resistance device is often used in engineering to restrain this mechanical behavior. The uplift resistance devices currently used in engineering have a certain intervention or restriction on the horizontal displacement of the beam body while limiting the vertical displacement of the beam body, that is, the uplift resistance device cannot adapt to the change of the horizontal displacement of the beam body, which in turn leads to an increase in the stress level of the beam body or the failure of the uplift resistance device. Content of the Utility Model

[0003] The purpose of the utility model is to provide an uplift resistance device with self-adaptive horizontal displacement of a beam body, which can not only restrain the upward warping of the beam body, but also automatically adapt to the change of the horizontal displacement of the beam body, aiming at the problem that the uplift resistance device used on the current steel structure bridge cannot adapt to the change of the horizontal displacement of the beam body.

[0004] The utility model is realized by the following technical solutions:

[0005] The utility model provides an uplift resistance device with self-adaptive horizontal displacement of a beam body, including an uplift resistance rod. The upper end of the uplift resistance rod is anchored on a steel beam, and the lower end of the uplift resistance rod is anchored in a capping beam below the steel beam. A horizontal movable channel is arranged in the capping beam, the uplift resistance rod is located in the horizontal movable channel, and the radial dimension of the horizontal movable channel is larger than the outer diameter of the uplift resistance rod.

[0006] As a preferred scheme of the utility model, a reaction support is arranged on the steel beam, and the upper end of the uplift resistance rod is anchored on the reaction support.

[0007] As a preferred scheme of the utility model, the reaction support is fixedly arranged on the bottom plate of the steel beam.

[0008] As a preferred scheme of the utility model, a pre-embedded sleeve is vertically arranged in the capping beam, the inner diameter of the pre-embedded sleeve is larger than the outer diameter of the uplift resistance rod, the horizontal movable channel is formed inside the pre-embedded sleeve, and the uplift resistance rod is located in the pre-embedded sleeve.

[0009] As a preferred scheme of the utility model, the pre-embedded sleeve is a round pipe or a square pipe.

[0010] As a preferred scheme of the utility model, the pre-embedded sleeve is a circular PVC pipe.

[0011] As a preferred scheme of the utility model, the pre-embedded sleeve is filled with mastic.

[0012] As a preferred embodiment of the present utility model, the upper end of the embedded casing is higher than the top surface of the capping beam.

[0013] As a preferred embodiment of the present utility model, the upper end of the uplift rod is anchored to the reaction support by a locking member.

[0014] As a preferred embodiment of the present utility model, the lower end of the uplift rod is anchored to the capping beam by a locking member.

[0015] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0016] After the anti-uplift device in the present utility model is installed, since a horizontal movement channel is provided in the capping beam, the uplift rod is located in the horizontal movement channel, and the radial dimension of the horizontal movement channel is larger than the outer diameter of the uplift rod. When the beam body undergoes a horizontal displacement, the uplift rod can adapt within the horizontal movement channel. When the beam body undergoes a vertical displacement due to upward warping, the anchoring structures at both ends of the uplift rod can restrain it. While ensuring the structural safety of the beam body, it will not overly interfere with the horizontal displacement of the beam body. This anti-uplift device can avoid an increase in the stress level of the beam body and contribute to extending the service life of the anti-uplift device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts. In the drawings:

[0018] Figure 1 Schematic diagram of the anti-uplift device for adapting to the horizontal displacement of the beam body in the present utility model;

[0019] Figure 2 For the present utility model Figure 1 Partial enlarged view at A in;

[0020] Figure 3 For the present utility model Figure 1 Partial enlarged view at B in;

[0021] Figure 4 Schematic diagram of the cross-section of the steel beam in the present utility model;

[0022] Figure 5 For the present utility model Figure 4 Schematic diagram of the C-C section in;

[0023] Marks in the drawings and corresponding component names:

[0024] 1 - Steel beam, 2 - Capping beam, 3 - Uplift rod, 4 - Embedded casing, 5 - Reaction support, 6 - Steel gasket, 7 - Base plate, 8 - Nut. Detailed implementation manner

[0025] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with embodiments and drawings. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and are not intended to limit the present utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description of the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features.

[0028] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment may be included in at least one embodiment of this application. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0029] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: there is A, there is both A and B, and there is B. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0030] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width and other dimensions of various components shown in the drawings in the embodiments of this application, as well as the overall thickness, length, width and other dimensions of the integrated device, are only for illustrative purposes and should not constitute any limitation to this application.

[0031] In the description of the embodiments of the present application, the term "a plurality" means two or more (including two). Similarly, "a plurality of groups" means two or more groups (including two groups), and "a plurality of pieces" means two or more pieces (including two pieces), unless otherwise specifically defined.

[0032] In the description of the embodiments of the present application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0033] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0034] Due to its relatively light self-weight, a steel structure bridge is prone to upward warping at the fulcrum position. In engineering, an uplift restraint device is often used to restrict this mechanical behavior. The uplift restraint devices currently used in engineering have a certain intervention or restriction on the horizontal displacement of the beam while limiting the vertical displacement of the beam. That is, the current uplift restraint devices cannot adapt to the change of the horizontal displacement of the beam, which will not only increase the stress level of the beam, but also cause damage to the uplift restraint device and reduce its service life. Based on this, after in-depth research, the applicant provides an uplift restraint device with self-adaptation to the horizontal displacement of the beam, which can avoid the increase of the stress level of the beam and help to extend the service life of the uplift restraint device.

[0035] Please refer to Figures 1 to 5 , an uplift restraint device with self-adaptation to the horizontal displacement of the beam provided in the embodiments of the present application includes an uplift rod 3. The upper end of the uplift rod 3 is anchored to the steel beam 1, and the lower end of the uplift rod 3 is anchored in the capping beam 2 below the steel beam 1. A horizontal moving channel is provided in the capping beam 2, the uplift rod 3 is located in the horizontal moving channel, and the radial dimension of the horizontal moving channel is larger than the outer diameter of the uplift rod 3.

[0036] In the embodiment of the present application, the steel beam 1 is supported above the capping beam 2. The upper and lower ends of the uplift rod 3 are respectively anchored and connected in the steel beam 1 and the capping beam 2, and the constraint effect of the anchoring point is between hinged and fixed. In the initial state, the uplift rod 3 extends vertically. The lower end of the uplift rod 3 can be anchored in the concrete of the capping beam 2 during the construction of the capping beam 2, that is, the uplift rod 3 forms a pre-embedded structure in the capping beam 2. The upper end of the uplift rod 3 can be anchored in the steel beam 1 after the steel beam 1 is hoisted onto the capping beam 2.

[0037] A horizontal movable channel is provided in the capping beam 2. The horizontal movable channel extends upward from the anchoring point at the lower end of the uplift rod 3, and the uplift rod 3 is located in the horizontal movable channel. It should be noted that the horizontal movable channel can be a cylindrical, prismatic or other structure, as long as its radial dimension is larger than the outer diameter of the uplift rod 3, and the uplift rod 3 has a certain amount of sway in the horizontal movable channel, so that when the steel beam 1 undergoes a horizontal displacement, the uplift rod 3 can shift in the horizontal movable channel, thereby automatically adapting to the horizontal displacement of the steel beam 1. It should be noted that the amount of movement of the uplift rod 3 in the horizontal movable channel depends on the magnitude of the horizontal displacement of the steel beam under the action of temperature and other loads.

[0038] After the anti-uplift device in the embodiment of the present application is installed, since a horizontal movable channel is provided in the capping beam 2, the uplift rod 3 is located in the horizontal movable channel, and the radial dimension of the horizontal movable channel is larger than the outer diameter of the uplift rod 3. When the beam body undergoes a horizontal displacement, the uplift rod 3 can adapt itself in the horizontal movable channel. When the beam body undergoes a vertical displacement due to upward warping, the anchoring structures at both ends of the uplift rod 3 can restrain it. While ensuring the structural safety of the beam body, it will not interfere too much with the horizontal displacement of the beam body. This anti-uplift device can avoid an increase in the stress level of the beam body and help to extend the service life of the anti-uplift device.

[0039] According to some embodiments of the present application, the uplift rod 3 can be a deformed bar pre-embedded in the capping beam 2. The diameter of the uplift rod 3 is φ20mm, and a section of external thread is respectively provided at the upper and lower ends of the uplift rod 3 to facilitate the anchoring of both ends of the uplift rod 3.

[0040] According to some embodiments of the present application, a reaction support 5 is provided on the steel beam 1, and the upper end of the uplift rod 3 is anchored on the reaction support 5. To facilitate the anchoring of the upper end of the uplift rod 3, a hole adapted to the outer diameter of the uplift rod 3 is opened on the reaction support 5. According to the diameter of the uplift rod 3, a round hole with an inner diameter of φ22mm can be opened.

[0041] According to some embodiments of the present application, the reaction force support 5 is fixedly arranged on the bottom plate of the steel beam 1. The reaction force support 5 includes a vertical plate and a horizontal plate. The vertical plate is fixed inside the steel beam 1, and the horizontal plate is supported on the tops of the two vertical plates. The upper end of the uplift rod 3 is anchored on the horizontal plate. It should be noted that there can be various structural forms for the reaction force support 5, and its installation position on the steel beam 1 can also be determined according to the situation, as long as the anchoring on the uplift rod 3 can be satisfied.

[0042] According to some embodiments of the present application, a pre-embedded sleeve 4 is arranged vertically in the capping beam 2. The inner diameter of the pre-embedded sleeve 4 is larger than the outer diameter of the uplift rod 3. The horizontal moving channel is formed inside the pre-embedded sleeve 4, and the uplift rod 3 is located in the pre-embedded sleeve 4. During the construction of the capping beam 2, the pre-embedded sleeve 4 and the uplift rod 3 are pre-embedded in the capping beam 2 concrete. When pre-embedding, the uplift rod 3 is preferably located at the center of the pre-embedded sleeve 4.

[0043] According to some embodiments of the present application, the pre-embedded sleeve 4 can be a round pipe or a square pipe. As long as the inner diameter of the round pipe or square pipe arranged vertically in the capping beam 2 is larger than the outer diameter of the uplift rod 3, the requirements can be met. Preferably, the inner diameter of the pre-embedded sleeve 4 is approximately equal to the sum of the outer diameter of the uplift rod 3 and twice the horizontal displacement of the steel beam.

[0044] According to some embodiments of the present application, the pre-embedded sleeve 4 is a circular PVC pipe. Using a circular PVC pipe as the pre-embedded sleeve 4 is convenient for pre-embedding during the construction of the capping beam 2. According to the diameter of the uplift rod 3, the pre-embedded sleeve 4 can adopt a PVC pipe with a diameter of φ50mm.

[0045] According to some embodiments of the present application, the pre-embedded sleeve 4 is filled with mastic. By filling the pre-embedded sleeve 4 with mastic, it can prevent the horizontal moving channel from being blocked by sundries, which affects the moving effect of the uplift rod 3. At the same time, it plays an anti-corrosion role for the uplift rod 3 in the pre-embedded sleeve 4. Since mastic has elasticity, when the steel beam 1 undergoes horizontal movement, the mastic can deform under the extrusion of the uplift rod 3. It should be noted that the pre-embedded sleeve 4 is filled with mastic after the capping beam 2 concrete has solidified.

[0046] According to some embodiments of the present application, the upper end of the pre-embedded sleeve 4 is higher than the top surface of the capping beam 2. According to the actual situation, the upper end of the pre-embedded sleeve 4 can be 50mm higher than the top surface of the capping beam 2, so as to reduce the water on the top surface of the capping beam 2 from entering the pre-embedded sleeve 4.

[0047] According to some embodiments of the present application, the upper end of the uplift rod 3 is anchored to the reaction support 5 through a locking member. The locking member includes a steel gasket 6 and two nuts 8. During anchoring, after passing the upper end of the uplift rod 3 through the round hole on the reaction support 5, the steel gasket 6 is sleeved on the upper end of the uplift rod 3, and then the two nuts 8 are tightened. The thickness of the steel gasket 6 can be 12 mm, and a rubber gasket with a thickness of 5 mm (not shown in the figure) can be provided between the steel gasket 6 and the reaction support 5.

[0048] According to some embodiments of the present application, the lower end of the uplift rod 3 is anchored to the capping beam 2 through a locking member. The locking member includes a backing plate 7 and two nuts 8. During the construction of the capping beam 2, the backing plate 7 is sleeved on the lower end of the uplift rod 3, and then the two nuts 8 are screwed in. At the same time, the embedded casing 4 is installed on the uplift rod 3. After the concrete of the capping beam 2 solidifies, an anchoring structure is formed. The thickness of the backing plate 7 can be 24 mm, and the length and width are 100*100 mm respectively.

[0049] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A beam horizontal displacement adaptive anti-pullout device, characterized in that: It includes an anti-pull-out rod, the upper end of which is anchored on a steel beam, and the lower end of which is anchored in a cap beam below the steel beam. A horizontal movable channel is provided in the cap beam, and the anti-pull-out rod is located in the horizontal movable channel. The radial dimension of the horizontal movable channel is greater than the outer diameter of the anti-pull-out rod.

2. The beam horizontal displacement adaptive anti-pullout device according to claim 1 is characterized in that: A reaction support is arranged on the steel beam, and the upper end of the anti-pullout rod is anchored on the reaction support.

3. The self-adaptive pull-out device for beam horizontal displacement according to claim 2 is characterized in that: The reaction force support is fixedly arranged on the bottom plate of the steel beam.

4. The beam horizontal displacement adaptive anti-pullout device according to any one of claims 1 to 3, characterized in that: An embedded sleeve is vertically arranged inside the cap beam, the inner diameter of the embedded sleeve is larger than the outer diameter of the anti-pullout rod, the horizontal movable channel is formed inside the embedded sleeve, and the anti-pullout rod is located in the embedded sleeve.

5. The beam horizontal displacement adaptive anti-pullout device according to claim 4 is characterized in that: The embedded sleeve is a round tube or a square tube.

6. The beam horizontal displacement adaptive anti-pullout device according to claim 5 is characterized in that: The embedded sleeve is a circular PVC tube.

7. The beam horizontal displacement adaptive anti-pullout device according to claim 4 is characterized in that: The pre-buried sleeve is filled with mastic.

8. The self-adaptive pull-out device for beam horizontal displacement according to claim 4 is characterized in that: The upper end of the embedded sleeve is higher than the top surface of the cap beam.

9. The beam horizontal displacement adaptive anti-pullout device according to claim 2 or 3, characterized in that: The upper end of the anti-pullout rod is anchored on the reaction force bracket through a locking piece.

10. The beam horizontal displacement adaptive anti-pullout device according to any one of claims 1 to 3, characterized in that: The lower end of the anti-pullout rod is anchored in the cap beam through a locking piece.

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