Prefabricated highway bridge friction pendulum type seismic mitigation and isolation support

Abstract

The utility model discloses a prefabricated highway bridge friction pendulum type seismic mitigation and isolation support which comprises a lower embedded part, a lower support plate is installed at the top end of the lower embedded part, lower anchor bolts are arranged on the two sides of the interior of the lower support plate respectively, lower sleeves are arranged at the bottom ends of the outer sides of the lower anchor bolts, and upper sleeves are arranged at the bottom ends of the lower sleeves respectively. A lower anchor rod is arranged in the lower sleeve, a lower embedded column is fixed to the bottom end of the lower anchor rod, and a gasket is fixed to the interior of a spring. Through the arrangement of the lower baffle and the upper baffle, when the sliding amplitude of the spherical crown lining plate is large, the spherical crown lining plate collides with the gasket, the gasket extrudes the spring inwards, the spring stretches and retracts into the reserved groove, the gasket plays a blocking role, the spherical crown lining plate can be prevented from directly colliding with the lower baffle or the upper baffle, and meanwhile the spherical crown lining plate is prevented from being damaged through the elastic effect of the spring. And the impact force borne by the gasket can be relieved, then the lower baffle and the upper baffle can be protected, and the service life of the support is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of highway bridges, in particular to a prefabricated highway bridge friction pendulum type shock-absorbing and isolating bearing. Background Art

[0002] Earthquake resistance of highway bridges is an important technical field in engineering construction. Through isolation, shock absorption and other methods, the dynamic response of engineering structures under the action of earthquake forces and wind forces can be timely and effectively controlled, thereby ensuring the safety of the structure itself. Friction pendulum bearings are a type of seismic isolation bearings, also known as curved slider seismic isolation bearings, which can ensure self-deformation under the action of live loads, temperature changes, concrete shrinkage and other factors. The curved sliding surface can extend the natural vibration period of the structure and play a role in shock absorption.

[0003] In actual use, when vibration occurs, the spherical crown lining plate (9) will slide inside the lower support plate (2) and the upper support plate (5). When the amplitude is too large, the spherical crown lining plate (9) will hit the lower baffle plate (3) or the upper baffle plate (4). Long-term collision is likely to cause the lower baffle plate (3) or the upper baffle plate (4) to break, and then it is easy for the spherical crown lining plate (9) to slide out, which is a high risk factor. Therefore, a prefabricated highway bridge friction pendulum type seismic isolation bearing is proposed to solve the problems pointed out in the above background technology. Utility Model Content

[0004] The utility model aims to provide a friction pendulum type seismic isolation bearing for a prefabricated highway bridge to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a prefabricated highway bridge friction pendulum seismic isolation bearing, including a lower embedded part, a lower bearing plate is installed on the top of the lower embedded part, lower anchor bolts are arranged on both sides of the lower bearing plate, a lower sleeve is arranged at the bottom end of the outer side of the lower anchor bolt, a lower anchor rod is arranged inside the lower sleeve, a lower embedded column is fixed to the bottom end of the lower anchor rod, the lower embedded rod is fixed to the bottom end of the lower embedded part, an upper bearing plate is arranged on the top of the lower bearing plate, an upper embedded part is installed on the top of the upper bearing plate, upper anchor bolts are arranged on both sides of the inner side of the upper bearing plate, the top end of the outer side of the upper anchor bolt An upper sleeve is provided at the end, an upper anchor rod is provided inside the upper sleeve, an upper embedded column is fixed to the top of the upper anchor rod, the upper embedded rod is fixed to the top of the upper embedded parts, lower baffles are fixed on both sides of the top of the lower support plate, upper baffles are fixed on both sides of the bottom of the upper support plate, a spherical crown lining is provided between the lower support plate and the upper support plate, an upper sliding friction surface is fixed on the top of the spherical crown lining, a lower sliding friction surface is fixed on the bottom of the spherical crown lining, fixing rings are fixed on the outer sides of the upper sleeve and the lower sleeve, reserved grooves are provided on the inner sides of the lower baffle and the upper baffle, a spring is fixed inside the reserved groove, and a gasket is fixed inside the spring.

[0006] Preferably, the gaskets are provided in multiple groups, and the gaskets in the multiple groups are symmetrically distributed about the center line of the lower support plate.

[0007] Preferably, the gasket forms a telescopic structure through a spring, and the lower baffle is symmetrically distributed about the center line of the lower support plate.

[0008] Preferably, the fixing rings are provided in multiple groups, and the multiple groups of fixing rings are arranged at equal intervals on the outer sides of the upper sleeve and the lower sleeve.

[0009] Preferably, the upper anchor bolt and the upper sleeve are threadedly connected, and the upper sleeve and the upper anchor rod are threadedly connected.

[0010] Preferably, a plurality of upper embedded rods are provided, and the plurality of upper embedded rods are arranged at equal intervals on the top end of the upper embedded part.

[0011] Preferably, a plurality of the lower embedded rods are provided, and the plurality of the lower embedded rods are arranged at equal intervals at the bottom end of the lower embedded part.

[0012] Preferably, a filling cavity is provided inside the spherical crown lining plate, and a reinforcement strip is fixed inside the filling cavity.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) By providing a lower baffle and an upper baffle, when the ball crown lining plate slides with a large amplitude, the ball crown lining plate will hit the gasket, the gasket will squeeze the spring inward, and the spring will expand and contract into the reserved groove. The gasket acts as a barrier to prevent the ball crown lining plate from directly colliding with the lower baffle or the upper baffle. At the same time, the elastic effect of the spring can reduce the impact force on the gasket, thereby protecting the lower baffle and the upper baffle, and extending the service life of the bearing;

[0015] (2) By providing an upper embedded rod and a lower embedded rod, during installation, the upper sleeve is sleeved on the outer side of the upper anchor bolt, and then the upper anchor rod is installed inside the upper sleeve, and the lower sleeve is sleeved on the outer side of the lower anchor bolt, and the lower anchor rod is installed inside the lower sleeve. The upper anchor rod can be reinforced by the upper embedded column to ensure the tightness of the upper anchor rod in the concrete. At the same time, the fixing ring will increase the force-bearing area of ​​the outer side of the upper sleeve and the lower sleeve, thereby ensuring the stability during support. The upper embedded rod can support and reinforce the upper embedded part, and the lower embedded rod can support and reinforce the lower embedded part.

[0016] (3) A spherical crown lining is provided, a filling cavity is provided inside the spherical crown lining, and reinforcement strips are fixed inside the filling cavity. The reinforcement strips can support and reinforce the filling cavity, improve its internal structural strength, and further support the spherical crown lining, thereby ensuring the stability of the internal structure of the spherical crown lining, making it more stable during long-term support sliding. The upper sliding friction surface and the lower sliding friction surface can ensure the lubricity of the spherical crown lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 This is a front view structural schematic diagram of the utility model;

[0020] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0021] Figure 4 It is a front view structural schematic diagram of the spherical crown lining plate of the utility model.

[0022] Description of reference numerals in the figures:

[0023] 1. Lower embedded parts; 2. Lower support plate; 3. Lower baffle plate; 4. Upper baffle plate; 5. Upper support plate; 6. Upper embedded parts; 7. Upper sleeve; 8. Upper anchor rod; 9. Ball crown lining; 10. Upper sliding friction surface; 11. Filling cavity; 12. Reinforcement strip; 13. Upper embedded rod; 14. Upper embedded column; 15. Upper anchor bolt; 16. Lower anchor bolt; 17. Lower sleeve; 18. Lower anchor rod; 19. Lower embedded column; 20. Lower embedded rod; 21. Lower sliding friction surface; 22. Fixing ring; 23. Reserved groove; 24. Spring; 25. Gasket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-4 The utility model provides an embodiment: a prefabricated highway bridge friction pendulum type seismic isolation bearing, including a lower embedded part 1, a lower bearing plate 2 is installed on the top of the lower embedded part 1, lower anchor bolts 16 are arranged on both sides of the lower bearing plate 2, a lower sleeve 17 is arranged at the bottom end of the outer side of the lower anchor bolt 16, a lower anchor rod 18 is arranged inside the lower sleeve 17, a lower embedded column 19 is fixed to the bottom end of the lower anchor rod 18, a lower embedded rod 20 is fixed to the bottom end of the lower embedded part 1, an upper bearing plate 5 is arranged on the top of the lower bearing plate 2, an upper embedded part 6 is installed on the top of the upper bearing plate 5, upper anchor bolts 15 are arranged on both sides of the upper bearing plate 5, and an upper sleeve 17 is arranged on the top end of the outer side of the upper anchor bolt 15 Tube 7, an upper anchor rod 8 is arranged inside the upper sleeve 7, an upper embedded column 14 is fixed to the top of the upper anchor rod 8, an upper embedded rod 13 is fixed to the top of the upper embedded part 6, lower baffle plates 3 are fixed on both sides of the top of the lower support plate 2, upper baffle plates 4 are fixed on both sides of the bottom of the upper support plate 5, a spherical crown lining plate 9 is arranged between the lower support plate 2 and the upper support plate 5, an upper sliding friction surface 10 is fixed to the top of the spherical crown lining plate 9, a lower sliding friction surface 21 is fixed to the bottom of the spherical crown lining plate 9, a fixing ring 22 is fixed to the outer side of the upper sleeve 7 and the lower sleeve 17, a reserved groove 23 is arranged on the inner side of the lower baffle plate 3 and the upper baffle plate 4, a spring 24 is fixed inside the reserved groove 23, and a gasket 25 is fixed inside the spring 24.

[0026] There are multiple groups of gaskets 25, and the multiple groups of gaskets 25 are symmetrically distributed about the center line of the lower support plate 2. The gaskets 25 form a telescopic structure through the spring 24, and the lower baffle 3 is symmetrically distributed about the center line of the lower support plate 2;

[0027] Specifically, Figure 1 and Figure 3 As shown, when the ball crown lining plate 9 slides with a large amplitude, the ball crown lining plate 9 will hit the gasket 25, the gasket 25 will press the spring 24 inward, and the spring 24 will expand and contract into the reserved groove 23. The gasket 25 plays a blocking role, which can prevent the ball crown lining plate 9 from directly colliding with the lower baffle plate 3 or the upper baffle plate 4. At the same time, the elastic effect of the spring 24 can reduce the impact force on the gasket 25, thereby protecting the lower baffle plate 3 and the upper baffle plate 4 and extending the service life of the support.

[0028] Embodiment 2: Multiple groups of fixing rings 22 are provided, and multiple groups of fixing rings 22 are arranged at equal intervals on the outer sides of the upper sleeve 7 and the lower sleeve 17. The upper anchor bolt 15 and the upper sleeve 7 are threadedly connected, and the upper sleeve 7 and the upper anchor rod 8 are threadedly connected. A plurality of upper embedded rods 13 are provided, and the plurality of upper embedded rods 13 are arranged at equal intervals at the top of the upper embedded part 6. A plurality of lower embedded rods 20 are provided, and the plurality of lower embedded rods 20 are arranged at equal intervals at the bottom of the lower embedded part 1.

[0029] Specifically, Figure 1 and Figure 2 As shown, during installation, the upper sleeve 7 is sleeved on the outer side of the upper anchor bolt 15, and then the upper anchor rod 8 is installed inside the upper sleeve 7, the lower sleeve 17 is sleeved on the outer side of the lower anchor bolt 16, and the lower anchor rod 18 is installed inside the lower sleeve 17. The upper anchor rod 8 can be reinforced by the upper embedded column 14 to ensure the tightness of the upper anchor rod 8 in the concrete. At the same time, the fixing ring 22 will increase the force-bearing area outside the upper sleeve 7 and the lower sleeve 17, thereby ensuring the stability during support. The upper embedded rod 13 can support and reinforce the upper embedded part 6, and the lower embedded rod 20 can support and reinforce the lower embedded part 1.

[0030] Embodiment 3: A filling cavity 11 is provided inside the spherical cap lining plate 9, and a reinforcement strip 12 is fixed inside the filling cavity 11;

[0031] Specifically, Figure 1 and Figure 4 As shown, a filling cavity 11 is provided inside the spherical crown lining 9, and a reinforcement strip 12 is fixed inside the filling cavity 11. The reinforcement strip 12 can support and reinforce the filling cavity 11, improve its internal structural strength, and further support the spherical crown lining 9, thereby ensuring the stability of the internal structure of the spherical crown lining 9, and making it more stable during long-term support sliding. The upper sliding friction surface 10 and the lower sliding friction surface 21 can ensure the lubricity of the spherical crown lining 9.

[0032] Working principle: When the utility model is in use, the upper sleeve 7 is sleeved on the outer side of the upper anchor bolt 15, and then the upper anchor rod 8 is installed inside the upper sleeve 7, the lower sleeve 17 is sleeved on the outer side of the lower anchor bolt 16, and the lower anchor rod 18 is installed inside the lower sleeve 17. The upper anchor rod 8 can be reinforced by the upper embedded column 14 to ensure the tightness of the upper anchor rod 8 in the concrete. At the same time, the fixing ring 22 will increase the force-bearing area of ​​the outer side of the upper sleeve 7 and the lower sleeve 17, thereby ensuring the stability during support. The rod 13 can support and reinforce the upper embedded part 6, and the lower embedded rod 20 can support and reinforce the lower embedded part 1. When vibration occurs, the spherical crown lining plate 9 will slide inside the lower support plate 2 and the upper support plate 5. When the sliding amplitude is large, the spherical crown lining plate 9 will hit the gasket 25, and the gasket 25 will squeeze the spring 24 inward, and the spring 24 will expand and contract into the reserved groove 23. The gasket 25 plays a blocking role, which can prevent the spherical crown lining plate 9 from directly colliding with the lower baffle plate 3 or the upper baffle plate 4, thereby completing the use of the friction pendulum type seismic isolation bearing.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A prefabricated highway bridge friction pendulum type seismic isolation bearing, comprising a lower embedded part (1), characterized in that: A lower support plate (2) is installed at the top of the lower embedded part (1), lower anchor bolts (16) are arranged on both sides of the lower support plate (2), a lower sleeve (17) is arranged at the bottom end of the outer side of the lower anchor bolt (16), a lower anchor rod (18) is arranged inside the lower sleeve (17), a lower embedded column (19) is fixed to the bottom end of the lower anchor rod (18), a lower embedded rod (20) is fixed to the bottom end of the lower embedded part (1), an upper support plate (5) is arranged at the top of the lower support plate (2), an upper embedded part (6) is installed at the top of the upper support plate (5), upper anchor bolts (15) are arranged on both sides of the upper support plate (5), an upper sleeve (7) is arranged at the top end of the outer side of the upper anchor bolt (15), an upper anchor rod (8) is arranged inside the upper sleeve (7), and the upper anchor rod (20) is fixed to the bottom end of the lower embedded part (1). An upper embedded column (14) is fixed to the top of the upper embedded part (8), an upper embedded rod (13) is fixed to the top of the upper embedded part (6), lower baffles (3) are fixed to both sides of the top of the lower support plate (2), and upper baffles (4) are fixed to both sides of the bottom of the upper support plate (5), a spherical crown lining plate (9) is arranged between the lower support plate (2) and the upper support plate (5), an upper sliding friction surface (10) is fixed to the top of the spherical crown lining plate (9), and a lower sliding friction surface (21) is fixed to the bottom of the spherical crown lining plate (9), a fixing ring (22) is fixed to the outer side of the upper sleeve (7) and the lower sleeve (17), and a reserved groove (23) is arranged on the inner side of the lower baffle (3) and the upper baffle (4), a spring (24) is fixed inside the reserved groove (23), and a gasket (25) is fixed inside the spring (24).

2. The prefabricated highway bridge friction pendulum type seismic isolation bearing according to claim 1 is characterized by: The gaskets (25) are provided in multiple groups, and the multiple groups of gaskets (25) are symmetrically distributed about the center line of the lower support plate (2).

3. The prefabricated highway bridge friction pendulum type seismic isolation bearing according to claim 1 is characterized by: The gasket (25) forms a telescopic structure through a spring (24), and the lower baffle plate (3) is symmetrically distributed about the center line of the lower support plate (2).

4. The prefabricated highway bridge friction pendulum type seismic isolation bearing according to claim 1, characterized in that: The fixing rings (22) are provided in multiple groups, and the multiple groups of fixing rings (22) are arranged at equal intervals on the outer sides of the upper sleeve (7) and the lower sleeve (17).

5. The prefabricated highway bridge friction pendulum type seismic isolation bearing according to claim 1, characterized in that: The upper anchor bolt (15) and the upper sleeve (7) are threadedly connected, and the upper sleeve (7) and the upper anchor rod (8) are threadedly connected.

6. The prefabricated highway bridge friction pendulum type seismic isolation bearing according to claim 1, characterized in that: A plurality of upper embedded rods (13) are provided, and the plurality of upper embedded rods (13) are arranged at equal intervals on the top end of the upper embedded part (6).

7. The prefabricated highway bridge friction pendulum type seismic isolation bearing according to claim 1, characterized in that: A plurality of lower embedded rods (20) are provided, and the plurality of lower embedded rods (20) are arranged at equal intervals at the bottom end of the lower embedded part (1).

8. The prefabricated highway bridge friction pendulum type seismic isolation bearing according to claim 1, characterized in that: A filling cavity (11) is provided inside the spherical cap lining (9), and a reinforcement strip (12) is fixed inside the filling cavity (11).

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