Self-adaptive elastic damping supporting device

Abstract

The utility model discloses a self-adaptive elastic damping supporting device which is characterized by comprising a telescopic flange module, an elastic damping module, a first base plate and a second base plate, the first base plate is connected with the elastic damping module, and the second base plate is connected with the elastic damping module through a telescopic flange module. According to the utility model, the assembly type design is adopted, the installation is efficient and accurate, the later maintenance is convenient, the damping element design is adopted, the energy can be effectively dissipated, the fatigue performance of the structure is enhanced, the length error caused by cutting construction can be compensated by adjusting the telescopic flange structure, and the spherical hinge capable of freely rotating is designed at one end so as to adapt to certain out-of-plane deformation.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge maintenance and repair. More specifically, the utility model relates to an adaptive elastic damping support device. Background Technique

[0002] Due to its large torsional and flexural moment of inertia and good wind resistance performance, steel box girders are widely used in long-span cable-stayed bridges and suspension bridges. The longitudinal diaphragm in the steel box girder can improve the axial flexural bearing capacity and improve the shear lag effect of the main girder. The longitudinal diaphragm is divided into two forms: solid web and open web. The open web longitudinal diaphragm mostly adopts a truss structure and is often arranged in the steel box girder section far from the fulcrum to reduce the self-weight of the main girder and enhance the structural stability during the hoisting construction of the main girder. Many bridges such as the Second Nanjing Yangtze River Bridge, Sutong Yangtze River Highway Bridge, Runyang Yangtze River Highway Bridge, Pearl River Huangpu Bridge, Anqing Yangtze River Highway Bridge, Sino-DPRK Yalu River Border River Highway Bridge, and Zhanjiang Bay Bridge have adopted the truss longitudinal diaphragm structure design. For the truss longitudinal diaphragm arranged in the steel box girder, some scholars believe that its main function is to prevent local instability during the hoisting construction of the main girder, and canceling the diagonal web members of the longitudinal diaphragm during the normal operation stage will not cause serious impact on the steel box girder.

[0003] For the cracking diseases of the truss longitudinal diaphragm of the steel box girder, the current conventional treatment methods include drilling crack arrest holes, reinforcing with welded steel plates, replacing diagonal web members with different cross-section forms, etc. However, there are still problems of re-cracking after a period of reinforcement for various treatment methods. Drilling crack arrest holes can release the stress at the crack tip, but only play a short-term relief role. After about one year, the crack will cross the crack arrest hole and continue to expand in the original direction, and even some diagonal web members will fracture across the section. For the longitudinal diaphragm reinforced with welded steel plates, new cracks will germinate at the welded steel plates or the weld ends under the action of fatigue stress after 2 - 3 years and continue to expand. Replacing the cracked circular tube diagonal web members with double-channel steel diagonal web members with greater flexural stiffness, new cracking diseases will appear about 3 years after replacement. Existing finite element simulation studies have shown that although the fatigue performance of the longitudinal diaphragm with channel steel diagonal web members is better than that of the circular tube type, it is still impossible to avoid the generation of fatigue cracks at the stress concentration points. Content of the Utility Model

[0004] The purpose of the utility model is to provide an adaptive elastic damping support device, which adopts an assembled design, has efficient and accurate installation, convenient later maintenance, adopts a damping element design, can effectively dissipate energy, enhance the fatigue performance of the structure, can compensate for the length error caused by cutting construction by adjusting the telescopic flange structure, and one end is designed as a spherical hinge that can rotate freely to adapt to a certain out-of-plane deformation.

[0005] The technical solution adopted by the utility model to solve this technical problem is: to provide an adaptive elastic damping support device, which includes a telescopic flange module, an elastic damping module, a first base plate and a second base plate;

[0006] The first base plate is connected to the elastic damping module, and the second base plate is connected to the elastic damping module through a telescopic flange module.

[0007] Preferably, for the adaptive elastic damping support device, the telescopic flange module includes an outer sleeve fixed on the second base plate, an inner sleeve sleeved inside the outer sleeve, and a telescopic flange seat plate for fixing the inner sleeve;

[0008] A plurality of sliding blocks are evenly distributed in a circumferential and symmetric manner on the inner side of the outer sleeve, and a plurality of stoppers are arranged at positions corresponding to the sliding blocks on the outer side of the inner sleeve. The stoppers block the sliding blocks to achieve a limiting effect and prevent the inner sleeve from detaching from the outer sleeve.

[0009] Preferably, for the adaptive elastic damping support device, an outer sleeve flange is provided on the outer sleeve, and an inner sleeve flange is provided on the inner sleeve. Corresponding positions of the outer sleeve flange and the inner sleeve flange are provided with annular openings and are connected by fasteners.

[0010] Preferably, for the adaptive elastic damping support device, the elastic damping module includes an elastic damping seat plate, a guide rod connecting plate, a guide rod, a pressing plate, an intermediate baffle, a threaded rod, a screw rod connecting plate, an elastic damping unit, a spherical hinge, and a spherical hinge base. Both between the elastic damping seat plate and the telescopic flange seat plate and between the spherical hinge base and the second base plate are connected by fasteners;

[0011] One end of the spherical hinge is a smooth convex spherical surface, and the other end is connected to the center of one side of the screw rod connecting plate. An inner concave spherical surface that fits the smooth convex spherical surface is arranged at the center of the spherical hinge base, so that the spherical hinge rotates on the spherical hinge base;

[0012] The other side center of the screw rod connecting plate has a blind hole with an inner concave shape. One end of the guide rod is located in the blind hole, and the other end sequentially passes through the center through holes of the intermediate baffle, the pressing plate, and the guide rod connecting plate. One side of the guide rod connecting plate is fixed on the elastic damping seat plate, and the other side center is fixedly connected to the guide rod;

[0013] A plurality of threaded blind holes are evenly spaced in a circumferential circle around the blind hole of the screw rod connecting plate. A plurality of through holes corresponding to the threaded blind holes one by one are arranged in a circumferential circle at the center of the pressing plate and the intermediate baffle. One end of several threaded rods is fixed in the threaded blind holes, and the other end sequentially passes through the through holes of the intermediate baffle and the pressing plate;

[0014] The elastic damping unit is sleeved on the outer periphery of the threaded rod, and several elastic damping units are arranged between the pressing plate and the intermediate baffle and between the intermediate baffle and the screw rod connecting plate.

[0015] Preferably, in the self - adaptive elastic damping support device, the central through - holes of the intermediate baffle and the guide rod connecting plate are both threaded holes, and the middle part and the bottom of the outer side of the guide rod have external threads, so that the connection between the guide rod and the guide rod connecting plate and the connection between the guide rod and the intermediate baffle are both threaded connections.

[0016] Preferably, in the self - adaptive elastic damping support device, the elastic damping module further includes an annular dust - proof cover. One end of the annular dust - proof cover is fixed to the outer periphery of the guide rod connecting plate, and the other end extends towards the outer periphery of the ball hinge.

[0017] Preferably, in the self - adaptive elastic damping support device, the through - hole of the pressing plate is of a stepped structure.

[0018] Preferably, in the self - adaptive elastic damping support device, positioning plates are annularly arranged on one side of the first base plate and the second base plate.

[0019] Preferably, in the self - adaptive elastic damping support device, the fastener includes a screw rod, a nut and a gasket.

[0020] The utility model has at least the following beneficial effects:

[0021] 1. The device in the utility model adopts an assembled design, with flange connections at both ends. The installation is efficient and accurate, and the later maintenance is convenient. Compared with the prior art, the maintenance cost during the whole life cycle of the structure is lower.

[0022] 2. The device in the utility model can compensate for the length error caused by cutting construction by adjusting the telescopic flange structure, realizing length self - adaptation.

[0023] 3. One end of the device in the utility model is designed as a freely rotatable ball hinge, which can adapt to a certain out - of - plane deformation, realizing angle self - adaptation.

[0024] 4. The equipment in the utility model adopts the design of elastic damping elements, which can effectively dissipate energy, enhance the fatigue performance of the structure, has strong adaptability, can be used to treat the fatigue cracking diseases of the steel box girder truss - type longitudinal partition plates, and can be popularized and applied to the design, reinforcement and other fields of similar truss structures.

[0025] Other advantages, objectives and features of the utility model will be partly reflected by the following description, and partly will be understood by those skilled in the art through the research and practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of a self - adaptive elastic damping support device of the utility model in the original structure;

[0027] Figure 2It is the structural diagram of an adaptive elastic damping support device of the present utility model;

[0028] Figure 3 It is the structural diagram of the inner flange sleeve in an adaptive elastic damping support device of the present utility model;

[0029] Figure 4 It is the structural diagram of the outer flange sleeve in an adaptive elastic damping support device of the present utility model;

[0030] Explanation of reference numerals: 1. Upper part of the original structural diagonal web member, 2. Top plate, 3. Gusset plate, 4. Bottom plate, 5. Diaphragm, 6. Telescopic flange module, 601. Outer sleeve, 602. Inner sleeve, 603. Telescopic flange seat plate, 604. Slide block, 605. Stop block, 606. Outer sleeve flange plate, 607. Inner sleeve flange plate, 7. Elastic damping module, 701. Elastic damping seat plate, 702. Guide rod connecting plate, 703. Guide rod, 704. Pressure plate, 705. Intermediate baffle, 706. Screw rod connecting plate, 707. Threaded rod, 708. Elastic damping unit, 709. Ball hinge, 710. Ball hinge base, 711. Annular dust cover, 8. First base plate, 9. Second base plate, 10. Positioning plate, 11. Fastener, 111. Screw rod, 112. Nut, 113. Gasket. Detailed implementation manners

[0031] The following further elaborates on the present utility model with reference to the attached drawings, so that those skilled in the art can implement it according to the description in the specification.

[0032] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present utility model can be applied to other implementation schemes, variation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present utility model.

[0033] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the attached drawings. These are only for the convenience of describing the present utility model 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, the above terms should not be construed as limitations on the present utility model.

[0034] It is understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be understood as a limitation on the quantity.

[0035] As Figures 1-4 shown, a preferred embodiment of the present utility model provides an adaptive elastic damping support device. After the lower part of the original diagonal web member is cut, it is replaced with the adaptive elastic damping support device. The upper part 1 of the original diagonal web member is connected to the gusset plate 3 of the top plate 2. The adaptive elastic damping support device includes a telescopic flange module 6, an elastic damping module 7, a first base plate 8, and a second base plate 9; As Figure 1 shown, a pair of new diagonal web members composed of the upper part 1 of the original diagonal web member and the adaptive elastic damping support device are located between a pair of transverse diaphragms 5 in the transverse direction.

[0036] The first base plate 8 is fixed on the gusset plate 3 of the bottom plate 4, the first base plate 8 is connected to the elastic damping module 7, the second base plate 9 is fixed at the lower end of the upper part 1 of the original diagonal web member, and the second base plate 9 is connected to the elastic damping module 7 through the telescopic flange module 6. By adjusting the telescopic flange structure, the length error caused by cutting construction can be compensated. In this embodiment, a preferred implementation is that the first base plate 8 and the gusset plate 3 of the bottom plate 4, and the second base plate 9 and the lower end of the upper part 1 of the original diagonal web member are both connected by welding.

[0037] Further, for the adaptive elastic damping support device, the telescopic flange module 6 includes an outer sleeve 601 fixed on the second base plate 9, an inner sleeve 602 sleeved inside the outer sleeve 601, and a telescopic flange seat plate 603 for fixing the inner sleeve 602;

[0038] A number of sliding blocks 604 are evenly distributed in a circular symmetry on the inner side of the outer sleeve 601. A number of stoppers 605 are arranged at positions corresponding to the sliding blocks 604 on the outer side of the inner sleeve 602. The number of the sliding blocks 604 is the same as the number of the stoppers 605. The stoppers 605 block the sliding blocks 604 to achieve a limiting effect to prevent the inner sleeve 602 from disengaging from the outer sleeve 601. In this embodiment, a preferred implementation is that the sliding blocks 604 are made of low-friction and wear-resistant materials, which is convenient for adjusting the length of the telescopic flange.

[0039] In the above technical solution, there is a certain gap between the sliding blocks 604. The cross-sectional dimension of a single stopper 605 is slightly smaller than the gap dimension of the sliding blocks 604. After the stopper 605 of the inner sleeve 602 passes through the gap of the sliding blocks 604 of the outer sleeve 601, the inner sleeve 602 is rotated by a certain angle to the position of the sliding blocks 604, and the stopper 605 blocks the sliding blocks 604 to achieve a limiting effect to prevent the inner sleeve 602 from disengaging from the outer sleeve 601.

[0040] Further, for the adaptive elastic damping support device, as Figure 3 and 4 shown, an outer sleeve flange 606 is provided on the outer sleeve 601, and an inner sleeve flange 607 is provided on the inner sleeve 602. Corresponding positions of the outer sleeve flange 606 and the inner sleeve flange 607 are annularly perforated, and the number and positions of the perforations correspond one by one and are connected by fasteners 11. In this embodiment, a screw 111 passes through the hole positions, and gaskets 113 are sleeved at both ends of the hole positions and fixed with nuts 112.

[0041] Further, for the adaptive elastic damping support device, the elastic damping module 7 includes an elastic damping base plate 701, a guide rod connecting plate 702, a guide rod 703, a pressing plate 704, an intermediate baffle 705, a screw rod connecting plate 706, a threaded rod 707, an elastic damping unit 708, a ball hinge 709 and a ball hinge base 710. Both between the elastic damping base plate 701 and the telescopic flange base plate 603 and between the ball hinge base 710 and the second base plate 9 are connected by fasteners 11;

[0042] One end of the ball hinge 709 is a smooth convex spherical surface, and the other end is connected to the center of one side of the screw rod connecting plate 706. An inner concave spherical surface that fits the smooth convex spherical surface is arranged at the center of the ball hinge base 710, so that the ball hinge 709 rotates on the ball hinge base 710; In this embodiment, a preferred implementation is that grease is evenly applied inside the spherical surface for easy rotation.

[0043] The center of the other side of the screw rod connecting plate 706 has a blind hole with an inner concave shape. One end of the guide rod 703 is located in the blind hole, and the other end sequentially passes through the center through holes of the intermediate baffle 705, the pressing plate 704, and the guide rod connecting plate 702. One side of the guide rod connecting plate 702 is fixed on the elastic damping base plate 701, and the center of the other side is fixedly connected to the guide rod 703;

[0044] A plurality of threaded blind holes are evenly spaced in a circumferential circle around the blind hole of the screw rod connecting plate 706. A plurality of through holes corresponding to the threaded blind holes one by one are provided in a circumferential circle at the center of the pressing plate 704 and the intermediate baffle 705. One end of several threaded rods 707 is fixed in the threaded blind holes, and the other end sequentially passes through the through holes of the intermediate baffle 705 and the pressing plate 704;

[0045] The elastic damping unit 708 is sleeved on the outer periphery of the threaded rod 707. A plurality of elastic damping units 708 are arranged between the pressing plate 704 and the intermediate baffle 705 and between the intermediate baffle 705 and the screw rod connecting plate 706. In this embodiment, a preferred implementation is that the number and arrangement of the elastic damping units 708 in each block are kept consistent.

[0046] In the above technical solution, as Figure 2 shown, since the telescopic flange module 6 can compensate for the length error caused by cutting construction by adjusting the telescopic flange structure to achieve length self - adaptation, it can perform a certain vertical telescopic deformation. When the bridge deck load is large, the upper part 1 of the original structure's diagonal web member pushes the guide rod connecting plate 702 downward, drives the pressure plate 704 and the intermediate baffle 705 to compress the elastic damping unit 708 through the guide rod 703. One end of the elastic damping module 7 is designed as a spherical hinge 709 that can rotate freely, which can adapt to a certain out - of - plane deformation to achieve angle self - adaptation. When the unloading is completed, under the action of the rebound force of the elastic damping unit 708, it can also push the entire intermediate baffle 705, pressure plate 704 and guide rod connecting plate 702 upward. The guide rod 703 reciprocates up and down. By adopting the design of elastic damping elements, it can effectively dissipate energy, enhance the fatigue performance of the structure, have strong adaptability, and realize the transfer of the stress of the upper part 1 of the original structure's diagonal web member caused by the load to the self - adaptive elastic damping support device and dissipate it here.

[0047] Further, for the self - adaptive elastic damping support device, the central through - holes of the intermediate baffle 705 and the guide rod connecting plate 702 are both threaded holes, and the middle part and the bottom of the outer side of the guide rod 703 both have external threads, so that the connection between the guide rod 703 and the guide rod connecting plate 702 and the connection between the guide rod 703 and the intermediate baffle 705 are both threaded connections.

[0048] Further, for the self - adaptive elastic damping support device, the elastic damping module further includes an annular dust - proof cover 711. One end of the annular dust - proof cover 711 is fixed on the outer periphery of the guide rod connecting plate 702, and the other end extends towards the outer periphery of the spherical hinge 709, which is used to prevent dust from entering the elastic damping module 7.

[0049] Further, for the self - adaptive elastic damping support device, the through - hole of the pressure plate 704 is a stepped structure.

[0050] Further, for the self - adaptive elastic damping support device, the elastic damping unit 708 has an energy - dissipating function and can adopt various elastic damping forms.

[0051] Further, for the self - adaptive elastic damping support device, on one side of the first base plate 8 and the second base plate 9, positioning plates 10 are annularly arranged. The positioning plates 10 facilitate the positioning and installation of the first base plate 8 and the second base plate 9.

[0052] Further, for the self - adaptive elastic damping support device, the fastener 11 includes a screw 111, a nut 112 and a gasket 113. The gasket 113 is used to prevent rainwater or impurities from falling, and prevent the screw 111 and the nut 112 from rusting during use.

[0053] Although the embodiments of the present utility model have been disclosed as above, it is not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples herein.

Claims

1. An adaptive elastic damping support device, characterized in that: It includes a retractable flange module, an elastic damping module, a first base plate and a second base plate; The first base plate is connected to the elastic damping module, and the second base plate is connected to the elastic damping module via a retractable flange module.

2. The adaptive elastic damping support device according to claim 1, characterized in that: The retractable flange module comprises an outer sleeve fixed on the second base plate, an inner sleeve sleeved in the outer sleeve, and a retractable flange base plate fixing the inner sleeve; A plurality of sliders are evenly distributed annularly and symmetrically on the inner side of the outer sleeve, and a plurality of stoppers are arranged on the outer side of the inner sleeve at positions corresponding to the sliders. The stoppers block the sliders to achieve a limiting effect and prevent the inner sleeve from being separated from the outer sleeve.

3. The adaptive elastic damping support device according to claim 2, characterized in that: The outer sleeve is provided with an outer sleeve flange, and the inner sleeve is provided with an inner sleeve flange. The outer sleeve flange and the inner sleeve flange are both provided with annular openings at corresponding positions and are connected by fasteners.

4. The adaptive elastic damping support device according to claim 2, characterized in that: The elastic damping module comprises an elastic damping seat plate, a guide rod connecting plate, a guide rod, a pressure plate, an intermediate baffle, a threaded rod, a screw connecting plate, an elastic damping unit, a ball joint and a ball joint base, wherein the elastic damping seat plate and the retractable flange seat plate and the ball joint base and the second base plate are connected by fasteners; One end of the ball joint is a smooth convex spherical surface, and the other end is connected to the center of one side of the screw connecting plate. The center of the ball joint base is provided with an inner concave spherical surface that fits the smooth convex spherical surface, so that the ball joint can rotate on the ball joint base; The center of the other side of the screw rod connecting plate has a concave blind hole, one end of the guide rod is located in the blind hole, and the other end passes through the central through hole of the intermediate baffle, the pressure plate, and the guide rod connecting plate in sequence. One side of the guide rod connecting plate is fixed to the elastic damping seat plate, and the center of the other side is fixedly connected to the guide rod; The screw connecting plate is provided with a plurality of threaded blind holes evenly spaced in a circle around the blind hole, and the central circumference of the pressing plate and the intermediate baffle is provided with a plurality of through holes corresponding to the threaded blind holes one by one, and one end of a plurality of the threaded rods is fixed in the threaded blind hole, and the other end passes through the through holes of the intermediate baffle and the pressing plate in sequence; The elastic damping unit is sleeved on the outer circumference of the threaded rod, and a plurality of the elastic damping units are arranged between the pressing plate and the middle baffle plate and between the middle baffle plate and the screw rod connecting plate.

5. The adaptive elastic damping support device according to claim 4, characterized in that: The central through holes of the intermediate baffle and the guide rod connecting plate are both threaded holes, and the middle and bottom of the outer side surface of the guide rod are both provided with external threads, so that the guide rod and the guide rod connecting plate as well as the guide rod and the intermediate baffle are all threadedly connected.

6. The adaptive elastic damping support device according to claim 4, characterized in that: The elastic damping module also includes an annular dust cover, one end of which is fixed to the outer periphery of the guide rod connecting plate, and the other end of which extends toward the outer periphery of the ball joint.

7. The adaptive elastic damping support device according to claim 4, characterized in that: The through hole of the pressing plate is a stepped structure.

8. The adaptive elastic damping support device according to claim 1, characterized in that: A positioning plate is arranged in an annular manner on one side of the first base plate and the second base plate.

9. The adaptive elastic damping support device according to claim 3 or 4, characterized in that: The fastener comprises a screw rod, a nut and a washer.

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