Bridge anti-falling device

Abstract

The utility model discloses a bridge falling prevention device, and relates to the technical field of building construction. Comprising a pre-embedded assembly which is connected in a beam body; the upper limiting sleeve is connected with the lower end of the embedded assembly; an upper cover plate, a lower limiting sleeve, a lower cover plate, a pressing ring and a pressure-bearing ring are included, the lower cover plate is connected to the lower end of the lower limiting sleeve, the pressure-bearing ring and the pressing ring are both arranged in the lower limiting sleeve, and the upper cover plate is connected with the end, away from the lower cover plate, of the lower limiting sleeve; the long end of the steel tenon extends into the upper limiting sleeve and is not in contact with the upper limiting sleeve, the short end of the steel tenon extends into the lower limiting sleeve, and the pressure-bearing ring surrounds the outer side of the steel tenon and is coaxially arranged with the steel tenon; and the two ends of the connecting plate are connected with the upper limiting sleeve and the lower limiting part correspondingly. According to the bridge falling prevention device, the bridge has the limiting function, the risk of falling of the bridge under the earthquake action is eliminated, construction and installation are convenient, and integrated construction can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, and more particularly to a bridge beam-falling prevention device. Background Art

[0002] Although bridges are strong enough to withstand earthquake vibrations, weak connections between their superstructures and substructures often lead to excessive relative displacement, resulting in bridge failure. Seismic damage to beam bridges is primarily manifested by: cracking, tilting, breaking, or sinking of piers; bending, twisting, breaking, toppling, or falling of bearings; relative displacement between the superstructure and substructure; and the resulting beam collapse.

[0003] The traditional anti-falling beam earthquake-resistant device sets a limit block between the beam and the pier, leaving a certain gap. When the relative deformation of the beam and the pier exceeds the gap, the limit block takes effect and restricts the further displacement of the beam. The problems brought by the traditional bridge anti-falling beam device are: the steel block is a rigid component, and the collision effect and its damage are difficult to estimate; during an earthquake, the force and deformation of the steel block cannot be accurately calculated; when the beam displaces, only the steel block on one side takes effect; the steel block is anisotropic and has a clear weak axis direction. Therefore, how to eliminate the risk of falling beams due to earthquakes is an urgent problem that technicians in this field need to solve. Utility Model Content

[0004] In view of this, the utility model provides a bridge beam-falling prevention device, which enables the bridge to have an isotropic limiting function, reduces the seismic force of the upper structure through the plastic deformation of the steel tenon, realizes the buffering and shock-absorbing functions to eliminate the risk of beams falling due to earthquakes, and improves construction efficiency through the design of the connecting plate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a bridge beam-falling prevention device connected between the beam body and the bridge pier, comprising:

[0007] An embedded component, wherein the embedded component is connected to the beam body, and the lower end of the embedded component is flush with the lower end of the beam body;

[0008] an upper limit sleeve connected to the lower end of the embedded component;

[0009] The lower limiting portion includes an upper cover plate, a lower limiting sleeve, a lower cover plate, a pressure ring and a pressure ring, wherein the lower cover plate is connected to the lower end of the lower limiting sleeve, the pressure ring and the pressure ring are both arranged in the lower limiting sleeve, the pressure ring is arranged at the lower end of the pressure ring, and the upper cover plate is connected to the end of the lower limiting sleeve away from the lower cover plate;

[0010] A steel tenon, wherein the long end of the steel tenon extends into the upper limit sleeve and there is a deformation gap between the upper limit sleeve and the short end of the steel tenon extends into the lower limit sleeve, and the pressure ring surrounds the outside of the steel tenon and is coaxially arranged with the steel tenon;

[0011] A connecting plate, one end of which is connected to the upper limit sleeve, and the other end of which is connected to any one of the upper cover plate, the lower limit sleeve and the lower cover plate.

[0012] Furthermore, the lower cover plate includes a limiting ring and a base plate, the base plate is connected to the bottom end of the lower limiting sleeve, the limiting ring is arranged at one end of the base plate close to the lower limiting sleeve and extends into the lower limiting sleeve, and the limiting ring surrounds the end of the steel tenon away from the upper limiting sleeve and does not contact the steel tenon.

[0013] Furthermore, the embedded component includes an embedded part and an embedded base plate, the embedded part is connected to one end of the embedded base plate, the embedded part extends into the beam body, the end of the embedded base plate away from the embedded part is flush with the lower end of the beam body, and the embedded base plate is connected to the upper limit sleeve.

[0014] Furthermore, the embedded bottom plate is connected to the embedded bottom plate at the bottom end of the beam body.

[0015] Furthermore, reinforcement plates are welded to the outer sides of the upper limit sleeve and the lower limit sleeve.

[0016] Furthermore, a groove and a protrusion are respectively provided on the bottom of the embedded base plate and the top of the upper limit sleeve, and the groove is engaged with the protrusion.

[0017] It can be seen from the above technical solution that compared with the prior art, the utility model discloses a bridge beam-falling prevention device. Before the anti-beam-falling device is installed, the embedded components are prefabricated in the beam body in advance. During the installation process, the anti-beam-falling device as a whole is directly connected to the embedded components, thereby reducing the installation cost and the number of installation steps. The deformation of the steel tenon and the positioning of the upper and lower limit sleeves ensure the buffering of the beam body and the effect of preventing the beam from falling. At the same time, the deformation gap between the steel tenon and the upper limit sleeve satisfies the installation deviation and the displacement caused by the thermal expansion and contraction of the bridge concrete, thereby ensuring the normal use of the anti-beam-falling device under non-seismic conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0019] Figure 1 This is a structural diagram of a bridge beam-falling prevention device provided by the utility model;

[0020] Figure 2 A schematic diagram of the structure of the embedded component provided by the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the reserved holes in the bridge pier cap provided by the utility model;

[0022] Figure 4 This is a schematic diagram of the installation of the bridge beam-falling prevention device provided by the utility model at the bottom of the beam;

[0023] Figure 5 This is a schematic diagram of the structure of the bridge beam-falling prevention device provided by the utility model after hoisting;

[0024] Figure 6 This is a schematic diagram of the installation of the bridge beam-falling prevention device provided by the utility model in a reserved hole;

[0025] Figure 7 This is a structural schematic diagram of the bridge beam-falling prevention device provided by the utility model after installation.

[0026] In the figure: 1. Embedded components; 101. Embedded base plate; 2. Upper limit sleeve; 3. Steel tenon; 4. Pressure ring; 5. Pressure ring; 6. Lower cover plate; 7. Lower limit sleeve; 8. Upper cover plate; 9. Connecting plate; 10. Reserved holes; 11. Beam body; 12. Anchor bolts; 13. Non-shrinkage cement mortar. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] See also Figure 1-7 The embodiment of the utility model discloses a bridge beam-falling prevention device connected between the beam body 11 and the bridge pier, comprising:

[0029] Embedded component 1, embedded component 1 is connected in the beam body 11, and the lower end of the embedded component 1 is flush with the lower end of the beam body 11;

[0030] The upper limit sleeve 2 is connected to the lower end of the embedded component 1;

[0031] The lower limit part includes an upper cover plate 8, a lower limit sleeve 7, a lower cover plate 6, a pressure ring 5 and a pressure ring 4. The lower cover plate 6 is connected to the lower end of the lower limit sleeve 7. The pressure ring 4 and the pressure ring 5 are both arranged in the lower limit sleeve 7. The pressure ring 5 is arranged at the lower end of the pressure ring 4. The upper cover plate 8 is connected to the end of the lower limit sleeve 7 away from the lower cover plate 6;

[0032] The long end of the steel tenon 3 extends into the upper limit sleeve 2 and there is a deformation gap with the upper limit sleeve 2, the short end of the steel tenon 3 extends into the lower limit sleeve 7, and the pressure ring 4 surrounds the outside of the steel tenon 3 and is coaxially arranged with the steel tenon 3;

[0033] The connecting plate 9 has one end connected to the upper limit sleeve 2 , and the other end connected to any one of the upper cover plate 8 , the lower limit sleeve 7 and the lower cover plate 6 .

[0034] Before installing the anti-beam-dropping device, the embedded component 1 is connected to the beam body 11, and the upper limit sleeve 2, the upper cover plate 8, the lower limit sleeve 7, the lower cover plate 6, the pressure ring 5, the pressure ring 4 and the steel tenon 3 are assembled together through the connecting plate 9. During the installation process, the anti-beam-dropping device as a whole is directly connected to the embedded component 1 through the upper limit sleeve 2, which reduces the installation cost and the installation steps, and at the same time enables the anti-beam-dropping device to be installed in a narrow on-site space.

[0035] A deformation gap is left between the steel tenon 3 and the upper limit sleeve 2, and the deformation caused by the installation deviation and the thermal expansion and contraction of the concrete is satisfied by the deformation gap.

[0036] When the earthquake force comes, the upper end of the steel tenon 3 contacts the inner wall of the upper limit sleeve 2. The steel tenon 3 is subjected to the force and produces elastic deformation with a buffering effect, and then plastic deformation occurs. At this time, the upper limit sleeve 2 has a limiting effect.

[0037] In some embodiments, the lower cover plate 6 includes a limiting ring and a base plate, the base plate is connected to the bottom end of the lower limiting sleeve 7, the limiting ring is arranged at one end of the base plate close to the lower limiting sleeve 7 and extends into the lower limiting sleeve 7, and the limiting ring surrounds the end of the steel tenon 3 away from the upper limiting sleeve 2 and does not contact the steel tenon 3.

[0038] The gap deformation caused by thermal expansion and contraction of concrete is released through the gap between the limiting ring and the short end of the steel tenon 3.

[0039] In some embodiments, the embedded component 1 includes an embedded part and an embedded base plate 101. The embedded part is connected to one end of the embedded base plate 101, and the embedded part extends into the beam body 11. The end of the embedded base plate 101 away from the embedded part is flush with the lower end of the beam body 11, and the embedded base plate 101 is connected to the upper limit sleeve 2.

[0040] Through holes are provided at the four corners of the upper limit sleeve 2 , and the upper limit sleeve 2 is connected to the embedded base plate 101 by anchor bolts 12 .

[0041] In some embodiments, the embedded part includes an anchor sleeve and an anchor rod. The anchor sleeve is welded to the embedded base plate 101 , and the embedded base plate 101 is fixed to the bottom end of the beam body 11 through the anchor rod and the anchor sleeve.

[0042] In some embodiments, the steel tenon 3 is made of carbon steel, and has a circular variable cross-section structure along the axial direction. The top and tail of the steel tenon 3 are thinner, the middle part is thicker, the upper part is the long end, and the lower part is the short end.

[0043] In some embodiments, reinforcement plates are welded to the outer sides of the upper limit sleeve 2 and the lower limit sleeve 7 .

[0044] In some embodiments, the installation height of the anti-falling beam device is adjusted by connecting the connecting plate 9 to any one of the upper cover plate 6, the lower limiting sleeve 7 and the lower cover plate 6.

[0045] During the assembly of the anti-falling beam device, the installation position of the upper limit sleeve 2 is determined by the connecting plate 9, and the upper limit sleeve 2 and the lower limit sleeve 7 are connected as a whole, which facilitates the installation of the bridge protection device.

[0046] In some embodiments, the bottom of the embedded base plate 101 and the top of the upper limit sleeve 2 are respectively provided with a groove and a protrusion, and the groove and the protrusion are embedded.

[0047] The engagement of the groove and the protrusion effectively alleviates the plastic deformation of the upper limit sleeve 2 when subjected to force.

[0048] In some embodiments, during the process of splicing the anti-falling beam device, the lower cover plate 6 is installed at the lower end of the lower limit sleeve 7, the pressure ring 5 and the pressure ring 4 are placed in the lower limit sleeve 7 in sequence, the short end of the steel tenon 3 is also placed in the lower sleeve limit tube 7 and a certain gap is retained with the limit ring in the lower cover plate 6, the upper cover plate 8 is fastened to the upper end of the lower limit sleeve 7, one end of the connecting plate 9 is connected to the upper cover plate 8 by bolts, and the other end of the connecting plate 9 is connected to the lower end of the upper limit sleeve 2, the installation position of the upper limit sleeve 2 is determined, and the upper limit sleeve 2 is connected to the long end of the steel tenon 3, and a deformation gap is retained between the steel tenon 3 and the upper limit sleeve 2.

[0049] In some embodiments, before the anti-beam-falling device is installed, the embedded component 1 is embedded in the corresponding position of the beam body 11 and the embedded bottom plate 101 is flush with the bottom end of the beam body 11, and a reserved hole 10 is reserved on the pier top cap corresponding to the embedded component 1; during the installation of the anti-beam-falling device, the spliced anti-beam-falling device is placed in the reserved hole 10, and the position of the lower limit sleeve 7 is adjusted so that the upper surface of the lower limit sleeve 7 is flush with the upper surface of the pier top cap, and the groove of the embedded bottom plate 101 is fitted with the boss of the upper limit sleeve 2, and the upper limit sleeve 2 and the embedded bottom plate 101 are connected by the anchor bolts 12. After the anti-beam-falling device is accurately positioned, the reserved hole 10 of the pier top cap is densely filled with non-shrinkage cement mortar 13 to achieve anchoring of the lower limit sleeve 7.

[0050] In some embodiments, dust prevention should be done when pouring mortar to prevent debris from falling into the lower limit sleeve 7. After the non-shrinkage cement mortar 13 solidifies and reaches the required strength, the connecting plate 9 is removed, and the rubber sealing ring is installed and fixed with a hose clamp. The sealing quality of the rubber sealing ring is ensured to prevent debris from falling into the lower limit sleeve 7 and affecting the normal operation of the anti-falling beam device.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0052] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bridge beam anti-falling device, connected between the beam body and the bridge pier, characterized in that: include: An embedded component, wherein the embedded component is connected to the beam body, and the lower end of the embedded component is flush with the lower end of the beam body; an upper limit sleeve connected to the lower end of the embedded component; The lower limiting portion includes an upper cover plate, a lower limiting sleeve, a lower cover plate, a pressure ring and a pressure ring, wherein the lower cover plate is connected to the lower end of the lower limiting sleeve, the pressure ring and the pressure ring are both arranged in the lower limiting sleeve, the pressure ring is arranged at the lower end of the pressure ring, and the upper cover plate is connected to the end of the lower limiting sleeve away from the lower cover plate; A steel tenon, wherein the long end of the steel tenon extends into the upper limit sleeve and there is a deformation gap between the upper limit sleeve and the short end of the steel tenon extends into the lower limit sleeve, and the pressure ring surrounds the outside of the steel tenon and is coaxially arranged with the steel tenon; A connecting plate, one end of which is connected to the upper limit sleeve, and the other end of which is connected to any one of the upper cover plate, the lower limit sleeve and the lower cover plate.

2. The bridge beam anti-falling device according to claim 1, characterized in that: The lower cover plate includes a limiting ring and a bottom plate, the bottom plate is connected to the bottom end of the lower limiting sleeve, the limiting ring is arranged on one end of the bottom plate close to the lower limiting sleeve and extends into the lower limiting sleeve, the limiting ring surrounds the end of the steel tenon away from the upper limiting sleeve and does not contact the steel tenon.

3. The bridge beam anti-falling device according to claim 1, characterized in that: The embedded component includes an embedded part and an embedded base plate. The embedded part is connected to one end of the embedded base plate. The embedded part extends into the beam body. The end of the embedded base plate away from the embedded part is flush with the lower end of the beam body. The embedded base plate is connected to the upper limit sleeve.

4. The bridge beam anti-falling device according to claim 3, characterized in that: The embedded bottom plate is connected to the embedded bottom plate at the bottom end of the beam body.

5. The bridge beam-falling prevention device according to claim 1, characterized in that: Reinforcement plates are welded to the outer sides of the upper limit sleeve and the lower limit sleeve.

6. The bridge beam-falling prevention device according to claim 3, characterized in that: The bottom of the embedded base plate and the top of the upper limit sleeve are respectively provided with a groove and a protrusion, and the groove is engaged with the protrusion.

Images