A shock absorbing system for municipal bridge works

Abstract

The present application relates to a kind of shock absorption system for municipal bridge engineering.The two-stage shock absorption buffer structure is used in the present application, the vibration influence caused by heavy truck, light car to bridge can be respectively aimed at, so that car can have better passability when passing through bridge, reduce the influence of the multiple frequency vibration caused by shock absorption structure on car driving, and using shock absorption spring group instead of single vertical installation elastic damper, not only can bear greater pressure, it also has better service life, can long-term stably play the shock absorption effect;When bridge is subjected to transverse shear force in the present application, the two sides movable support frame and shock absorption spring group of longitudinal shock absorption mechanism at the bottom of bridge cooperate, can effectively absorb and buffer transverse force, and the two shock absorption spring groups of transverse shock absorption mechanism at the bottom are oblique side settings, can reduce the torsion degree of transverse force to it, to ensure that it can long-term stably work.

Description

Technical Field

[0001] This invention relates to the field of municipal engineering technology, and in particular to the design of a vibration reduction system for municipal bridge engineering. Background Technology

[0002] As bridge construction is a crucial element of transportation networks, the importance of seismic design for bridges is self-evident. A well-designed seismic bridge achieves an optimal combination of strength, stiffness, and ductility in its seismic structure, thus effectively and economically meeting seismic resistance goals. Without damping structures, the connection between the bridge and its piers will be damaged by vibrations, affecting the bridge's lifespan.

[0003] However, in existing technologies, the main reasons for bridge pier damage caused by vibration are insufficient bending shear strength and insufficient bending toughness. In addition to reinforcing the bridge piers, the shock absorption and buffering performance between the bridge and the piers should also be improved. Existing technologies enhance the shock absorption effect between the bridge and the piers by setting multiple vertically installed buffer springs and rubber buffer blocks. Among them, the rubber buffer blocks have a relatively high natural frequency and a small compression amount, making them susceptible to external environmental influences and resulting in a short service life. As for the buffer springs, during use, due to the lateral shear force exerted on the bridge, the buffer springs are very prone to torsion, and when their stroke is not linear, they cannot play a buffering and shock absorption role. Summary of the Invention

[0004] To address the aforementioned problems, a vibration reduction system for municipal bridge engineering is provided, aiming to achieve [the desired results].

[0005] The specific technical solution is as follows:

[0006] A vibration damping system for municipal bridge engineering includes:

[0007] Vibration-damping base plate;

[0008] Two longitudinal damping mechanisms are used to reduce the amplitude of longitudinal vibration, and are installed at intervals on the damping base plate at the front and rear.

[0009] A lateral damping mechanism, used to reduce the amplitude of lateral vibration, is installed between two longitudinal damping mechanisms; and

[0010] The support structure, used to support the load, is mounted on the lateral damping mechanism.

[0011] Furthermore, the longitudinal damping mechanism includes:

[0012] The shock-absorbing base rod is installed on the shock-absorbing base plate;

[0013] The shock-absorbing top rod is installed above the shock-absorbing bottom rod;

[0014] Two support rods are slidably mounted on the support rods, and a lateral shock absorption mechanism is mounted on the support rods; and

[0015] Two shock absorber cylinders are provided, with the bottom of the shock absorber cylinder rotatably mounted on the bottom shock absorber rod and the top shock absorber cylinder rotatably mounted on the top shock absorber rod.

[0016] Furthermore, the longitudinal damping mechanism also includes:

[0017] The deflection rod is rotatably mounted on the shock-absorbing base rod.

[0018] A first connecting rod, one end of which is rotatably mounted on a deflector rod, and the other end of which is rotatably mounted on a first adapter. The first adapter is embedded in a shock-absorbing top rod and can slide reciprocally along the shock-absorbing top rod; and

[0019] The second link has one end rotatably mounted on the deflection rod and the other end rotatably mounted on the second adapter. The second adapter is embedded in the shock-absorbing top rod and can slide back and forth along the shock-absorbing top rod. The shock-absorbing top rod is mounted on the first adapter and the second adapter.

[0020] Furthermore, the lateral damping mechanism includes:

[0021] Support base, used to support the load;

[0022] Two sets of shock-absorbing spring clips are installed on the support base at intervals on the left and right;

[0023] Two support frames, installed front and rear between the shock-absorbing spring assembly, each support frame having a collar for supporting the load, and the support frames fixed to the support top rod; and

[0024] Two limiting rods are provided, which can be inserted and fixed to the support frame.

[0025] Furthermore, the lateral damping mechanism also includes multiple first damping links, with both ends of the first damping links rotatably mounted on the support frame and the support base, respectively.

[0026] Furthermore, the lateral damping mechanism also includes multiple second damping links. The second damping links are forked, with one end rotatably mounted on the bottom of the collar, and two arms of the second damping links rotatably mounted on the support base.

[0027] Furthermore, the lateral damping mechanism also includes a limiting bolt 38 for limiting the limiting rod, the limiting bolt being inserted through the limiting rod.

[0028] Furthermore, the support structure includes: a fixed rod, a connecting rod, and two lateral ends. The two ends of the fixed rod are inserted into the collar, the middle part of the fixed rod is seated in the support base, the lateral ends are fixed to the two ends of the fixed rod, and the connecting rod is fixed between the lateral ends.

[0029] Furthermore, the support structure also includes multiple reinforcing rods arranged at intervals, with both ends of the reinforcing rods mounted on the fixed rods and connecting rods.

[0030] The beneficial effects of the above scheme are:

[0031] 1) The present invention adopts a two-stage shock absorption and buffer structure, which can respectively target the vibration impact of heavy trucks and light cars on bridges, so that the vehicles can have better passability when crossing the bridge, reduce the impact of multi-frequency vibrations generated by the shock absorption structure on vehicle driving, and use shock absorber spring group instead of using vertically installed elastic damper alone, which can not only withstand greater pressure, but also have a better service life and can play a stable shock absorption role for a long time.

[0032] 2) In this invention, when the bridge is subjected to lateral shear force, the movable support frame and shock absorber spring group on both sides of the longitudinal damping mechanism at the bottom of the bridge can effectively absorb and buffer the lateral force. In addition, the two shock absorber spring groups of the lateral damping mechanism at the bottom are set at an angle, which can reduce the degree of torsion of the lateral force on it, thereby ensuring that it can work stably for a long time. Attached Figure Description

[0033] Figure 1 This is an exploded structural diagram of the shock absorption system provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the assembly structure of the shock absorption system provided in an embodiment of the present invention;

[0035] Figure 3 This is a schematic diagram of the longitudinal damping mechanism provided in an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the assembly of the longitudinal damping mechanism and the damping base plate provided in an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of the transverse damping mechanism provided in an embodiment of the present invention.

[0038] In the attached diagram: 10. Damping base plate; 20. Longitudinal damping mechanism; 21. Damping bottom rod; 22. Damping top rod; 23. Support top rod; 24. Damping cylinder; 25. Deflection rod; 26. First connecting rod; 27. First adapter; 28. Second connecting rod; 29. ​​Second adapter; 30. Lateral damping mechanism; 31. Support base; 32. Damping spring assembly; 33. Support frame; 34. Collar; 35. Limiting rod; 36. First damping connecting rod; 37. Second damping connecting rod; 38. Limiting bolt; 40. Support structure; 41. Fixing rod; 42. Connecting rod; 43. Lateral end; 44. Reinforcing rod. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0041] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0042] like Figures 1 to 5 As shown, the vibration damping system provided in the embodiment of the present invention includes: a vibration damping base plate 10, two longitudinal vibration damping mechanisms 20 for reducing the longitudinal vibration amplitude, a lateral vibration damping mechanism 30 for reducing the lateral vibration amplitude, and a support structure 40. The two longitudinal vibration damping mechanisms 20 are installed on the vibration damping base plate 10 at a distance from front to back; the lateral vibration damping mechanism 30 is installed between the two longitudinal vibration damping mechanisms 20; and the support structure 40 is installed on the lateral vibration damping mechanism 30.

[0043] In this invention, the load is like a bridge, which is supported by the support structure 40. When the bridge vibrates, the longitudinal damping mechanism 20 deforms and dampes first under the downward pressure. When the force continues to increase, the transverse damping mechanism 30 deforms and dampes. Thus, the longitudinal damping mechanism 20 and the transverse damping mechanism 30 form a two-stage buffer system, which effectively improves the damping performance.

[0044] As a concrete example, such as Figures 1 to 4As shown, the longitudinal damping mechanism 20 of this invention includes: a damping bottom rod 21, a damping top rod 22, two supporting top rods 23, and two damping cylinders 24 (preferably spring telescopic rods in this invention). The damping bottom rod 21 is installed on the damping base plate 10; the damping top rod 22 is installed above the damping bottom rod 21; the two supporting top rods 23 are slidably installed on the supporting top rods 23; the bottom of the spring telescopic rod is rotatably installed on the damping bottom rod 21 through a connecting pin, and the top of the spring telescopic rod is rotatably installed on the damping top rod 22 through a connecting pin; under the above structure, the damping bottom rod 21, the damping top rod 22, and the two damping cylinders 24 are connected to form a trapezoidal or inverted trapezoidal structure with equal waist lengths. Thus, when the bridge vibrates, the spring telescopic rod 24 is compressed and contracts, and the two damping top rods 22 move downwards to achieve buffering. Based on this technical solution, to improve the stability of the longitudinal damping mechanism 20 and prevent lateral displacement of the damping top rod 22 and the spring telescopic rod 24, such as... Figure 3 , Figure 4 As shown, in this invention, a deflection rod 25 can also be provided on the shock-absorbing base rod 21. The deflection rod 25 is rotatably mounted on the shock-absorbing base rod 21. A first connecting rod 26 and a second connecting rod 28 are rotatably mounted on the deflection rod 25. One end of the first connecting rod 26 is rotatably mounted on the deflection rod 25, and the other end is rotatably mounted on the first adapter 27. The first adapter 27 is embedded in the shock-absorbing top rod 22 and can slide back and forth along the shock-absorbing top rod 22. One end of the second connecting rod 28 is rotatably mounted on the deflection rod 25, and the other end is rotatably mounted on the second adapter 29. The second adapter 29 is embedded in the shock-absorbing top rod 22. The second adapter 29 can slide back and forth along the shock-absorbing top rod 22. The shock-absorbing top rod 22 is mounted on the first adapter 27 and the second adapter 29. In the above structure, when the shock-absorbing top rod 22 moves downward, the first connecting rod 26 and the second connecting rod 28 will deflect at the bottom of the first adapter 27 and the second adapter 29 respectively, and push the two ends of the deflection rod 25, causing the deflection rod 25 to rotate. The above structure can enhance the structural stability, so that the shock-absorbing top rod 22 only moves in the vertical direction. When the applied external force is released, the two spring telescopic rods 33 return to their initial length.

[0045] As a concrete example, such as Figure 1 , Figure 2 , Figure 5As shown, the lateral damping mechanism 30 provided in the embodiment of the present invention includes: a support base 31 for supporting the support structure 40, two sets of damping spring groups 32, two support frames 33, and two limiting rods 35; the two sets of damping spring groups 32 are installed on the support base 31 at intervals on the left and right by clamps; the two support frames 33 are installed between the damping spring groups 32 by clamps in front and behind, and the support frames 33 have collars 34 for supporting the load, and the support frames 33 are fixed to the support top rod 23; the limiting rods 35 can be inserted and fixed on the support frames 33; under the above structure, the support structure 40 is fixed on the collars 34, and the support structure 40 is inserted through the collars 34 before the limiting rods 35 are inserted through the support frames 33 and the support structure 40 to fix the support structure 40; in this way, when the bridge is subjected to a large force, the support frames 33 press down on both ends of the damping spring groups 32, causing the damping spring groups 32 to undergo elastic deformation, thereby realizing secondary buffering of the bridge.

[0046] This invention employs a two-stage shock absorption and buffer structure, which can separately address the vibration impact on bridges caused by heavy-duty trucks and light cars. This allows vehicles to have better passability when crossing bridges, reduces the impact of multi-frequency vibrations generated by the shock absorption structure on vehicle driving, and uses a shock absorber spring assembly 32 instead of a single vertically installed elastic damper. This not only allows it to withstand greater pressure but also has a longer service life, enabling it to provide stable shock absorption over a long period of time.

[0047] Furthermore, to increase the stability of the lateral damping mechanism 30, multiple first damping rods 36 can be provided between the support frame 33 and the support base 31, with both ends of the first damping rods 36 rotatably mounted on the support frame 33 and the support base 31, respectively. Similarly, multiple second damping rods 37 can be provided between the collar 34 and the support base 31. The second damping rods 37 are forked, with one end rotatably mounted on the bottom of the collar 34 and two arms rotatably mounted on the support base 31.

[0048] In order to fix the limiting rod 35 from the left and right directions and prevent the limiting rod 35 from going out, the transverse damping mechanism 30 in this invention also includes a limiting bolt 38 for limiting the limiting rod 35, and the limiting bolt 38 is inserted on the limiting rod 35.

[0049] As a concrete example, such as Figure 1 As shown, the support structure 40 in this invention includes: a fixed rod 41, a connecting rod 42, and two lateral ends 43. The two ends of the fixed rod 41 are inserted into the collar 34, and the middle part of the fixed rod 41 is seated in the support base 31. The lateral ends 43 are fixed to the two ends of the fixed rod 41, and the connecting rod 42 is fixed between the lateral ends 43. In the above structure, the fixed rod 41 is inserted into the collar 34, and then the lateral ends 43 and the connecting rod 42 are installed in sequence.

[0050] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A vibration damping system for municipal bridge engineering, characterized in that, include: Vibration-damping base plate; Two longitudinal damping mechanisms are used to reduce the longitudinal vibration amplitude and are installed at an interval on the damping base plate. A lateral damping mechanism, used to reduce the amplitude of lateral vibration, is installed between the two longitudinal damping mechanisms; as well as A support structure, used to support the load, is installed on the lateral damping mechanism; The longitudinal damping mechanism includes: A shock-absorbing base rod is installed on the shock-absorbing base plate; A shock-absorbing top rod is installed above the shock-absorbing bottom rod; Two support rods are slidably mounted on the support rods, and the transverse shock absorption mechanism is mounted on the support rods; Two shock absorber cylinders, the bottom of which is rotatably mounted on the shock absorber bottom rod, and the top of which is rotatably mounted on the shock absorber top rod; The deflection rod is rotatably mounted on the shock-absorbing base rod. A first connecting rod, one end of which is rotatably mounted on the deflecting rod, and the other end of which is rotatably mounted on a first adapter, the first adapter being embedded in the damping top rod, and the first adapter reciprocating along the damping top rod; and The second connecting rod has one end rotatably mounted on the deflection rod and the other end rotatably mounted on the second adapter. The second adapter is embedded in the shock-absorbing top rod and slides back and forth along the shock-absorbing top rod. The shock-absorbing top rod is seated on the first adapter and the second adapter.

2. The vibration damping system for municipal bridge engineering according to claim 1, characterized in that, The lateral damping mechanism includes: Support base, used to support the load; Two sets of shock-absorbing spring sheets are installed on the support base at intervals on the left and right; Two support frames are installed front and rear between the shock-absorbing spring assembly. Each support frame has a collar for supporting the load, and the support frame is fixed to the support rod. Two limiting rods are inserted through and fixed to the support frame.

3. The vibration damping system for municipal bridge engineering according to claim 2, characterized in that, The lateral damping mechanism also includes multiple first damping links, with both ends of the first damping links rotatably mounted on the support frame and the support base, respectively.

4. The vibration damping system for municipal bridge engineering according to claim 2 or 3, characterized in that, The lateral damping mechanism also includes multiple second damping links. The second damping links are forked, with one end of the second damping link rotatably mounted on the bottom of the collar, and two arms of the second damping link rotatably mounted on the support base.

5. The vibration damping system for municipal bridge engineering according to claim 2 or 3, characterized in that, The lateral damping mechanism also includes a limiting bolt for limiting the limiting rod, the limiting bolt being inserted through the limiting rod.

6. The vibration damping system for municipal bridge engineering according to claim 2, characterized in that, The support structure includes: a fixed rod, a connecting rod, and two lateral ends. The two ends of the fixed rod pass through the collar, the middle part of the fixed rod sits in the support base, the lateral ends are fixed to the two ends of the fixed rod, and the connecting rod is fixed between the lateral ends.

7. The vibration damping system for municipal bridge engineering according to claim 6, characterized in that, The support structure also includes a plurality of reinforcing rods arranged at intervals, with both ends of the reinforcing rods mounted on the fixing rod and the connecting rod.

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