Energy consumption type anti-beam-falling device suitable for near-fault bridge

Abstract

The utility model discloses an energy consumption type anti-beam-falling device suitable for a near-fault bridge. The energy consumption type anti-beam-falling device comprises a connecting piece, an upper connecting plate, a metal damping unit, a lower connecting plate, an inhaul cable, an inhaul cable fixing piece, an inhaul cable fixing plate, an inhaul cable hole, an inhaul cable fixing plate bolt and a connecting plate groove. The upper connecting plate and the lower connecting plate are respectively fixed with the beam body and the abutment through the connecting pieces; the metal damping unit is fixed between the upper and lower connecting plates and is of a vertical arc-shaped structure; inhaul cable fixing plates are positioned at two ends of the up-down connecting plate; the multiple inhaul cables are located on the two longitudinal sides of the device, and the two ends of the inhaul cables are fixed in the inhaul cable holes through inhaul cable fixing pieces. The device consumes energy through deformation of the metal damping units, is limited through the inhaul cables when displacement is large, and has the advantages of being convenient to assemble, capable of being adjusted and replaced, capable of effectively preventing beam falling and the like.

Description

TECHNICAL FIELD

[0001] The utility model discloses a railway engineering technical field, specifically a kind of energy dissipation type anti-falling beam device suitable for near fault bridge. BACKGROUND

[0002] China is located between the circum-pacific seismic belt and the Eurasian seismic belt, and there are many seismic belts in China. Bridge structure is the throat of transportation, and it is also the part most easily affected by earthquake.

[0003] The strong movement of the ground during an earthquake causes complex vibration of the bridge structure, including longitudinal, transverse and vertical vibration. Near-fault ground motion has obvious speed and displacement pulse due to its directionality effect and slide effect, which has obvious differences in amplitude, frequency spectrum and duration compared with far-field ground motion. In addition, near-fault ground motion has larger vertical ground motion, so the seismic mitigation device of railway bridge needs to have large displacement and vertical limiting function. The damage of bearings and profiled steel blocks of Huanglushu Bridge in Menyuan, Qinghai, caused the displacement of main girder, and even lateral overturning. The earthquake damage shows that the destruction of the connection between the beam body and the bridge pier (such as the bearing and the block) will cause serious deformation of the track system, and even cause beam falling.

[0004] Anti-falling beam device is a safety device used in bridge structure, mainly used to prevent beam falling phenomenon of bridge superstructure under extreme disaster such as earthquake, and to ensure the integrity and safety of bridge structure. At present, there are many types of anti-falling beam devices, such as limiting block type, coupling beam device type and energy dissipation type.

[0005] However, the collision between the block and the steel plate in the limiting block type anti-falling beam device may produce a large impact force under strong earthquake, causing damage to the beam body and the lower structure, and its energy dissipation capacity is relatively limited. The installation requirement of the coupling beam device type anti-falling beam device is high, and the length of the connecting beam and the tightness of the connection need to be accurately controlled. Moreover, in the long-term use process, the connecting parts may be loose, corroded and other problems. Although the energy dissipation type anti-falling beam device can effectively dissipate seismic energy and reduce the dynamic response of the beam body and the lower structure, when the horizontal or vertical displacement of the damper, the core component of the device, exceeds the designed displacement, the damper is easy to be damaged, resulting in failure of the seismic mitigation system. Utility model content

[0006] In view of the various deficiencies of the above different types of anti-falling beam devices, combined with the widely used cable limiting device, a kind of energy dissipation type anti-falling beam device suitable for near fault bridge is designed.

[0007] The utility model discloses a purpose lies in providing a kind of energy dissipation type anti-falling beam device suitable for near fault bridge, both inherit the all advantages of energy dissipation type anti-falling beam device, and can be reliably limited by inhaul cable portion under strong earthquake action, ensure that shock absorption system normally operates, while inhaul cable limiting portion is easy to assemble, can be freely adjusted and replaced.

[0008] The utility model discloses belong to railway engineering technical field, concretely to a kind of energy dissipation type anti-falling beam device suitable for near fault bridge, including connecting piece (1), upper contact plate (2), metal damping unit (3), lower contact plate (4), inhaul cable (5), inhaul cable fixing piece (6), inhaul cable fixed plate (7), inhaul cable hole (8), inhaul cable fixed plate bolt (9) and contact plate recess (10), the connecting piece (1) is fixedly connected with bridge beam body by upper contact plate (2), connecting piece (1) is fixedly connected with bridge pier by lower contact plate (4), upper contact plate (2), lower contact plate (4) are fixedly connected with metal damping unit (3), the inhaul cable fixed plate (7) is located at the both ends of upper contact plate (2) and lower contact plate (4) respectively, and it is equipped with a plurality of inhaul cable holes (8) thereon, the inhaul cable (5) is a plurality of, respectively located in the longitudinal two sides of device, and each inhaul cable is respectively connected with the inhaul cable fixed plate (7) located at the both ends of upper contact plate (2) and lower contact plate (4), and the both ends of inhaul cable are equipped with inhaul cable fixing piece (6).

[0009] Preferably, the metal damping unit is arranged between the bridge beam body and the bridge pier.

[0010] Preferably, the metal damping unit is fixedly connected with the upper contact plate and the lower contact plate by welding.

[0011] Preferably, the metal damping unit has a vertical arc structure.

[0012] Preferably, the end of each inhaul cable is placed in the inhaul cable hole of the inhaul cable fixed plate, and the inhaul cable fixed plate is connected with the upper contact plate and the lower contact plate by inhaul cable fixed plate bolts.

[0013] Preferably, each inhaul cable is made according to a designed shape and size and is reliably fixed by a square fixing piece at a specific position.

[0014] Preferably, each inhaul cable is made of steel strand or high-strength steel wire rope.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses can assemble on the construction site, and each component adopts bolt connection and welding mode connection between, and the construction efficiency is higher, and the energy -consuming component adopts metal damping unit, utilizes the plastic deformation of metal to consume earthquake energy, to reach the purpose of shock absorption, and metal damping unit adopts vertical arc structure, not only can be in horizontal direction with caterpillar band type movement mode and produce deformation to realize the bending plastic energy -dissipation, can also realize the limiting function in vertical, and metal material is little by the environment influence, and the stable performance is good, and the durability is good, and the maintenance cost is low, and the limiting component adopts high -strength cable, when the displacement of metal damping unit exceeds the design displacement's 70%, and cable starts stress, plays the double effect of effective limiting and avoids the failure of seismic isolation element, guarantees the effectiveness of bridge integral seismic mitigation system under near-fault ground motion, and cable limiting part is convenient to assemble, can freely adjust and replace. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 It is the side view of the utility model;

[0020] Figure 4 It is the southwest isometric three-dimensional view of the utility model.

[0021] Figure 5 It is the drawing of single cable in the utility model.

[0022] Figure 6 It is the drawing of cable part and cable fixed plate cooperation in the utility model.

[0023] Figure 7 It is the drawing of the recess on both sides of the contact plate in the utility model.

[0024] The energy dissipation type anti-falling beam device suitable for near-fault bridge comprises a connecting piece (1), an upper connecting plate (2), a metal damping unit (3), a lower connecting plate (4), a cable (5), a cable fixing piece (6), a cable fixing plate (7), a cable hole (8), a cable fixing plate bolt (9) and a connecting plate groove (10), the connecting piece (1) is fixedly connected with the upper connecting plate (2) and the bridge beam body, the connecting piece (1) is fixedly connected with the lower connecting plate (4) and the bridge pier, the upper connecting plate (2) and the lower connecting plate (4) are fixedly connected with the metal damping unit (3), the cable fixing plate (7) is arranged at two ends of the upper connecting plate (2) and the lower connecting plate (4) respectively, a plurality of cable holes (8) are arranged on the cable fixing plate (7), the cable (5) is arranged at two longitudinal sides of the device, each cable is connected with the cable fixing plate (7) at two ends of the upper connecting plate (2) and the lower connecting plate (4) respectively, and the two ends of each cable are provided with the cable fixing piece (6).

[0025] In the figure: 1 connecting piece, 2 upper connecting plate, 3 metal damping unit, 4 lower connecting plate, 5 cable, 6 cable fixing piece, 7 cable fixing plate, 8 cable hole, 9 cable fixing plate bolt, 10 connecting plate groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application. EMBODIMENT

[0027] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The utility model provides a technical scheme: a kind of energy dissipation type anti-falling beam device suitable for near fault bridge, including connecting piece 1, upper contact plate 2, metal damping unit 3, lower contact plate 4, inhaul cable 5, inhaul cable fixing 6, inhaul cable fixing plate 7, inhaul cable hole 8, inhaul cable fixing plate bolt 9 and contact plate recess 10, connecting piece 1 is fixedly connected with upper contact plate 2 and bridge beam body, connecting piece 1 is fixedly connected with lower contact plate 4 and bridge pier, upper contact plate 2, lower contact plate 4 are fixedly connected with metal damping unit 3, the inhaul cable fixing plate 7 is located at the both ends of upper contact plate 2 and lower contact plate 4 respectively, and several inhaul cable holes 8 are arranged on it, the inhaul cable 5 is several, and is located at the longitudinal two sides of device respectively, and each inhaul cable is connected with the inhaul cable fixing plate 7 located at the both ends of upper contact plate 2 and lower contact plate 4, and the both ends of inhaul cable are equipped with inhaul cable fixing 6. The above mainly relates to the connection between steel members, and each steel member can be standardized in factory production.

[0028] First, upper contact plate 2 is equipped with connecting piece 1, and connecting piece 1 is used to fixedly connect upper contact plate 2 with bridge beam body, specifically, connecting piece 1 is anchor bolt.

[0029] Lower contact plate 4 is equipped with connecting piece 1, and connecting piece 1 is used to fixedly connect lower contact plate 4 with bridge pier, specifically, connecting piece 1 is anchor bolt.

[0030] Upper contact plate 2 is fixedly connected with the top of metal damping unit 3, and lower contact plate 4 is fixedly connected with the bottom of metal damping unit 3, specifically, upper contact plate 2 is fixedly connected with the top of metal damping unit 3 by welding, and lower contact plate 4 is fixedly connected with the bottom of metal damping unit 3 by welding.

[0031] Contact plate recess 10 for placing inhaul cable fixing 6 and bolt hole for connecting inhaul cable fixing plate 7 are reserved on the both sides of upper contact plate 2 and lower contact plate 4.

[0032] Inhaul cable 5 is made according to the shape and size of design, and inhaul cable fixing 6 is reliably clamped at specific position, the inhaul cable fixing 6 is square structure, specifically, each inhaul cable 5 is made of steel strand or high-strength steel wire rope, and the length of inhaul cable 5 is determined according to the design displacement of metal damping unit 3.

[0033] The end of inhaul cable 5 is placed in inhaul cable hole 8 of inhaul cable fixing plate 7, and inhaul cable fixing plate 7 is fixedly connected with upper contact plate 2 and lower contact plate 4 by inhaul cable fixing plate bolt 9, specifically, several inhaul cable holes 8 are reserved on inhaul cable fixing plate 7.

[0034] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be considered as limiting the claims involved.

[0035] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A kind of energy dissipation type anti-falling beam device suitable for near-fault bridge, including connecting piece (1), upper tie plate (2), metal damping unit (3), lower tie plate (4), cable (5), cable fixing part (6), cable fixing plate (7), cable hole (8), cable fixing plate bolt (9) and tie plate groove (10), it is characterized in that: The connecting piece (1) connects the upper contact plate (2) with the bridge beam body, the connecting piece (1) connects the lower contact plate (4) with the bridge pier, the upper contact plate (2) and the lower contact plate (4) are fixedly connected with the metal damping unit (3), the cable fixing plate (7) is located at the two ends of the upper contact plate (2) and the lower contact plate (4) respectively, a plurality of cable holes (8) are arranged on the cable fixing plate (7), the cables (5) are a plurality of, are located at the longitudinal two sides of the device respectively, each cable is connected with the cable fixing plate (7) located at the two ends of the upper contact plate (2) and the lower contact plate (4) respectively, and the two ends of the cable are provided with cable fixing pieces (6).

2. The energy dissipation type anti-falling beam device suitable for a near-fault bridge according to claim 1, characterized in that: The metal damping unit (3) is arranged between the bridge beam body and the bridge pier.

3. The energy dissipation type anti-falling beam device suitable for near-fault bridge of claim 1, characterized in that: The metal damping unit (3) is in a vertical arc structure.

4. The energy dissipation type anti-falling beam device suitable for near-fault bridge of claim 1, wherein: The metal damping unit (3) is fixedly connected with the upper contact plate (2) and the lower contact plate (4) in a welding mode.

5. The energy dissipation type anti-falling beam device suitable for near-fault bridge of claim 1, wherein: The end of each cable (5) is placed in the cable hole (8) of the cable fixing plate (7), and the cable fixing plate (7) is connected with the upper contact plate (2) and the lower contact plate (4) through cable fixing plate bolts (9) respectively.

6. The energy dissipation type anti-falling beam device suitable for near-fault bridge of claim 1, wherein: The cable fixing piece (6) arranged at the two ends of the cable (5) is in a square structure.

7. The energy dissipation type anti-falling beam device suitable for near-fault bridge of claim 1, wherein: The length of the cable (5) is determined according to the designed displacement of the metal damping unit (3).

8. The energy dissipation type anti-falling beam device suitable for near-fault bridge of claim 1, wherein: Each cable (5) is made of steel strand or high-strength steel wire rope.

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