CN215668962U - Anti-seismic beam falling structure suitable for multi-span plate girder bridge and plate girder system - Google Patents

Abstract

The utility model provides an earthquake-proof beam falling structure suitable for a multi-span plate girder bridge, which comprises a plurality of plate girders connected in sequence, a support arranged below the plate girders, and a connecting seat plate structure positioned at the connecting end part of two adjacent plate girders; the connecting seat plate structure comprises a lower seat plate and an upper seat plate positioned above the lower seat plate; a transverse limiting tooth is fixedly arranged on the upper surface of the lower seat plate, which bears the upper seat plate, a buffer block is sleeved on the transverse limiting tooth, and a sliding groove which is used for mounting the transverse limiting tooth and the buffer block and is arranged along the bridge direction is formed in the lower surface of the upper seat plate, which faces the lower seat plate; and a buffer plate is filled between every two adjacent plate beams, and a mounting hole for the transverse limiting tooth and the buffer block to penetrate through is formed in the buffer plate. The utility model can obviously reduce the incidence rate of the beam falling in the earthquake and has the functions of shock absorption, energy dissipation and deformation prevention.

Description

Anti-seismic beam falling structure suitable for multi-span plate girder bridge and plate girder system

Technical Field

The utility model relates to the field of beam bridges, in particular to an anti-seismic beam falling structure suitable for a multi-span plate beam bridge and a plate beam system.

Background

In recent years, many destructive earthquakes have occurred nationwide or worldwide, causing very disastrous loss of life and property. The bridge engineering is seriously damaged in the earthquake, particularly, the bridge engineering is damaged by falling of a beam, a traffic life line in an earthquake area is directly cut off, and the post-earthquake disaster relief work is difficult to be carried out in time. Particularly in some high-intensity areas, the bridge has larger displacement along the bridge direction under the action of earthquake, and the displacement exceeds an allowable value to cause the collision of an upper structure or the earthquake damage of a falling beam.

In order to solve the technical problems, the chinese utility model patent application with publication number CN106567325A discloses a combined type anti-falling beam and collision device, which comprises a bent cap, a plate-type rubber support and a bridge superstructure; the plate-type rubber support is fixed on the bent cap through a support cushion block and is supported below the upper structure of the bridge; the beam end department of bridge superstructure is provided with a plurality of diaphragms that are rigid connection, and the diaphragm one-to-one of the adjacent beam end department of two bridge superstructure, connects through power consumption component and cable between the diaphragm that every group corresponds. Although this patent can restrict the relative deformation of bridge superstructure to a certain extent, has reduced the possibility of falling the roof beam, it is connected through power consumption component and cable between the diaphragm that every group corresponds, not only too big to the dependence of material, the persistence is low, and anti seismic capacity is poor, can not effectively deal with the earthquake deformation displacement of cross-bridge direction moreover, consequently, it can not show the reduction earthquake and falls the roof beam incidence.

In view of the above, there is a need for a structure of anti-earthquake-proof girder for multi-span plate girder bridge, which solves or at least alleviates the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an earthquake-proof beam falling structure suitable for a multi-span plate girder bridge, and aims to solve the technical problem that the incidence rate of earthquake beam falling cannot be obviously reduced in the prior art.

In order to achieve the purpose, the utility model provides an earthquake-proof beam falling structure suitable for a multi-span plate girder bridge, which comprises a plurality of plate girders connected in sequence, a support arranged below the plate girders, and a connecting seat plate structure positioned at the connecting end part of two adjacent plate girders;

the connecting seat plate structure comprises a lower seat plate and an upper seat plate positioned above the lower seat plate, the lower seat plate is integrally formed and arranged at the lower part of the connecting end part of one of the two adjacent plate beams, the upper seat plate is integrally formed and arranged at the upper part of the connecting end part of the other one of the two adjacent plate beams, and when the two adjacent plate beams are butted, the upper seat plate is placed above the lower seat plate so as to butt and fix the two adjacent plate beams;

a transverse limiting tooth is fixedly arranged on the upper surface of the lower seat plate, which bears the upper seat plate, a buffer block is sleeved on the transverse limiting tooth, and a sliding groove which is used for mounting the transverse limiting tooth and the buffer block and is arranged along the bridge direction is formed in the lower surface of the upper seat plate, which faces the lower seat plate;

and a buffer plate is filled between every two adjacent plate beams, and a mounting hole for the transverse limiting tooth and the buffer block to penetrate through is formed in the buffer plate.

Furthermore, the upper surface of the lower seat plate is concavely provided with a fixing groove, and the bottom end of the transverse limiting tooth is fixed in the fixing groove.

Further, horizontal spacing tooth is cylindricly, set up on the buffer block and supply cylindric through-hole that horizontal spacing tooth runs through from top to bottom.

Furthermore, the buffer plate is in a zigzag shape, and the zigzag buffer plate comprises a first vertical buffer part, a horizontal buffer part and a second vertical buffer part which are sequentially arranged; the first vertical buffer part is filled between the upper seat plate and the connecting end part, the horizontal buffer part is filled between the upper seat plate and the lower seat plate, and the second vertical buffer part is filled between the lower seat plate and the connecting end part.

Further, the second vertical buffer part of the buffer plate is fixedly connected with the lower seat plate through a viscous material.

Further, the horizontal buffer part of the buffer plate is provided with the mounting hole, and the cross section of the mounting hole is not smaller than that of the sliding groove.

Further, the sliding groove formed in the upper seat plate extends to the extending end of the upper seat plate.

Further, the buffer plate and the buffer block are made of rubber.

Further, when the plate beam is a starting beam, a starting end of the starting beam is a vertical section, and the other end of the starting beam is the connecting end integrally formed with the lower seat plate;

when the plate girder is a final frame girder, the final frame end of the final frame girder is a vertical section, and the other end of the final frame girder is the connecting end part integrally formed with the upper seat plate;

when the plate beam is a middle beam, one end of the middle beam is the connecting end integrally formed with the upper seat plate, and the other end of the middle beam is the connecting end integrally formed with the lower seat plate;

when the middle beam is a folding beam, the two ends of the folding beam are both the connecting end parts which are integrally formed with the upper seat plate.

The utility model also provides a plate girder system, which comprises the earthquake-proof falling girder structure.

Compared with the prior art, the utility model has the following advantages:

the utility model can obviously reduce the incidence rate of the falling beam of the earthquake, and has the functions of shock absorption, energy dissipation and deformation prevention; by arranging the connecting seat plate structure, the deformation displacement of the plate girder along the bridge and the transverse bridge can be effectively avoided, the dependence degree on materials is low, the durability is good, and the service life of the plate girder is equivalent to that of a plate girder body; by arranging the support, under normal conditions, the support can be used for bearing the loads of the multi-span plate girder bridge in the horizontal and vertical directions; the upper seat plate and the lower seat plate can be used for dealing with earthquake deformation displacement along the bridge direction, when the bridge deck is displaced integrally, one end of the plate girder bridge is separated from the support, temporary support can be formed due to the fact that the upper seat plate and the lower seat plate at the ends of adjacent plate girders are matched, the beams are prevented from falling, and in addition, when the bridge deck is displaced integrally and cracked, a certain deformation amount can be provided by the upper seat plate and the lower seat plate; by arranging the transverse limiting teeth, the buffer blocks and the sliding grooves, the earthquake deformation displacement in the transverse bridge direction can be responded, the hinging of adjacent beam ends is ensured, the buffer function is realized, and a certain deflection angle amplitude is provided; by arranging the buffer plate, the plate beam can be further prevented from being extruded and deformed; in addition, the structure provided by the utility model can be used for designing multi-span hollow slabs and small box girder bridges in high seismic intensity areas and multi-span hollow slabs and small box girder bridges in movable fracture zones, and has no special requirements on construction equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic perspective view of an earthquake-proof beam-falling structure according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an earthquake-proof beam-falling structure in a disassembled state (a support is not shown) according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a lower seat plate according to an embodiment of the present invention (the buffer block is not shown);

FIG. 4 is a perspective view of a lower base plate according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of an upper seat plate according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a buffer plate according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of a buffer plate according to another embodiment of the present invention;

FIG. 8 is a schematic perspective view of an original frame beam according to an embodiment of the present invention;

FIG. 9 is a schematic perspective view of an end frame beam according to an embodiment of the present invention;

FIG. 10 is a schematic perspective view of an intermediate beam according to an embodiment of the present invention;

FIG. 11 is a schematic perspective view of a folding beam according to an embodiment of the present invention;

FIG. 12 is a schematic perspective view of a plate girder system according to an embodiment of the present invention (the support and the cushion plate are not shown);

FIG. 13 is a schematic perspective view of a plate girder system according to another embodiment of the present invention (the support and the cushion plate are not shown);

the reference numbers illustrate: the plate-girder erection device comprises a plate girder 1, a support 2, a lower seat plate 3, a fixing groove 31, a transverse limiting tooth 32, a buffer block 33, an upper seat plate 4, a sliding groove 41, a buffer plate 5, a first vertical buffer part 51, a horizontal buffer part 52, a second vertical buffer part 53, a mounting hole 54, a starting frame girder 6, an ending frame girder 7, a middle girder 8 and a folding girder 9.

The implementation, functional features and advantages of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that all the directional indicators (such as the upper and lower … …) in the embodiment of the present invention are only used to explain the relative position relationship, movement, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Moreover, the technical solutions in the embodiments of the present invention may be combined with each other, but it is necessary to be able to be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

As shown in fig. 1 to 11, in order to prevent the multi-span plate girder bridge from falling due to natural disasters such as earthquake, the utility model provides an earthquake-proof beam falling structure suitable for the multi-span plate girder bridge, which comprises a plurality of plate girders 1 connected in sequence and a support 2 arranged below the plate girders 1, wherein the support 2 can be generally arranged close to the adjacent positions of the plate girders 1 and the plate girders 1, and the earthquake-proof beam falling structure further comprises a connecting seat plate structure arranged at the connecting end of two adjacent plate girders 1.

It should be noted that the drop of the multi-span plate girder bridge is mainly caused by the deformation displacement of the plate girder 1 under the driving of the earthquake, and therefore, a specific treatment is required to be performed on the connection between the plate girder 1 and the plate girder 1. In the embodiment, the connecting seat plate structure is arranged at the connecting end part of two adjacent plate beams 1, so that the plate beams 1 can be effectively prevented from deforming and displacing along the bridge and the transverse bridge, the dependence degree on materials is low, the durability is good, and the service life of the connecting seat plate structure is equivalent to that of the plate beam 1 body.

In order to enable the connecting seat plate structure to be matched with the plate girder 1 and improve the deformation resistance of the plate girder 1, the connecting seat plate structure comprises a lower seat plate 3 and an upper seat plate 4 positioned above the lower seat plate 3, wherein the lower seat plate 3 is integrally arranged at the lower part of the connecting end part of one of the two adjacent plate girders 1, and the upper seat plate 4 is integrally arranged at the upper part of the connecting end part of the other one of the two adjacent plate girders 1, so that the joint of the two adjacent plate girders 1, one of the plate girders 1 is integrated with the upper seat plate 4, the other plate girder 1 is integrated with the lower seat plate 3, and the integrity of the earthquake-proof beam structure can be improved by carrying out the integral arrangement.

In addition, it should be noted that, when two adjacent plate girders 1 are butted, the upper seat plate 4 is placed above the lower seat plate 3 to butt and fix the two adjacent plate girders 1, so as to ensure the connection between the plate girders 1 and the plate girders 1, and the upper seat plate 4 and the lower seat plate 3 are vertically arranged, so that the three-dimensional earthquake deformation displacement along the bridge direction can be responded, when the bridge deck has a tendency of overall displacement along the bridge direction, one end of the plate girder 1 bridge has a tendency of being separated from the support 2, however, as the upper seat plate 3 and the lower seat plate 3 at the end of the adjacent plate girder 1 are matched, a temporary support can be formed to prevent the girder from falling.

In order to further improve the anti-deformation displacement ability between the plate girder 1 and the plate girder 1, especially improve the effect of the anti-earthquake deformation displacement in the transverse bridge direction, the bearing of the lower seat plate 3 is fixedly provided with transverse limit teeth 32 on the upper surface of the upper seat plate 4, a buffer block 33 is sleeved on the transverse limit teeth 32, the upper seat plate 4 faces the lower surface of the lower seat plate 3 and is provided with a sliding groove 41 used for installing the transverse limit teeth 32 and the buffer block 33 along the bridge direction, and the sliding groove 41 is matched with the transverse limit teeth 32 and the buffer block 33, so that the damping and energy dissipation can be carried out, and the plate girder 1 is prevented from deforming. Through the effect of horizontal spacing tooth 32 with spout 41, guaranteed that adjacent the beam-ends of plate girder 1 are articulated, can resist horizontal ascending displacement and warp, moreover, buffer block 33 can play the cushioning effect to provide certain declination range.

In addition, in order to increase the deformation resistance of the earthquake-proof beam falling structure, a buffer plate 5 is filled between two adjacent plate beams 1, and for filling a gap between two adjacent plate beams 1, in order to fit the buffer plate 5 with the connecting seat plate structure, the installation of the buffer plate 5 is facilitated, and the interference of the buffer plate 5 on the installation of the connecting seat plate structure is avoided, and the buffer plate 5 is provided with an installation hole 54 through which the transverse limiting tooth 32 and the buffer block 33 penetrate. It should be noted that, although the lower seat plate 3 can carry the upper seat plate 4, the two are not necessarily in direct contact, and can also be indirectly stressed through the buffer plate 5; in order to be able to fill the buffer plate 5 between two adjacent plate girders 1, since the upper seat plate 4 and the lower seat plate 3 are also part of the respective plate girders 1, the height of the upper seat plate 4 and the lower seat plate 3 may be less than half of the height of the plate girders 1, which facilitates filling the buffer plate 5 between the upper seat plate 4 and the lower seat plate 3.

It should be noted that, since the upper seat plate 4 and the lower seat plate 3 are not separately provided but integrally formed with the corresponding plate girder 1, the upper seat plate 4 and the lower seat plate 3 may be regarded as a part of the corresponding plate girder 1, and when the connecting portion of the adjacent two plate girders 1 is not provided with the connecting seat plate structure or when the concept of temporary assistance is required due to the description, the connecting end portion of the plate girder 1 may indicate only the end portion of the adjacent two plate girders 1 at the connecting position, but when the adjacent two plate girders 1 are integrally formed with the upper seat plate 4 and the lower seat plate 3, respectively, the connecting portion of the plate girders 1 is adjusted by the presence of the upper seat plate 4 and the lower seat plate 3.

The workflow of the above embodiment may be: in the actual construction process, the buffer block 33 is sleeved on the horizontal limiting teeth 32 on the lower seat plate 3, then the buffer plate 5 is tightly connected with the lower seat plate 3 and the plate girder 1 integrally formed with the lower seat plate 3, and finally the lower seat plate 3 is installed in a matching manner with the upper seat plate 4, so that the bridge deck has the capability of resisting deformation and displacement in the bridge-following direction, and in the matching process of the upper seat plate 4 and the lower seat plate 3, the horizontal limiting teeth 32 and the buffer block 33 on the lower seat plate 3 are required to be installed in the sliding grooves 41 of the upper seat plate 4, so that the plate girder 1 and the plate girder 1 can have the capability of resisting deformation and displacement in the horizontal bridge direction, and the buffer performance between the upper seat plate 4 and the lower seat plate 3 is improved.

Under normal conditions: the multi-span plate girder bridge is supported by the support 2 to bear horizontal and vertical loads.

When dealing with the seismic deformation displacement along the bridge direction:

(1) the bridge deck is displaced integrally, one end of a plate girder 1 bridge is separated from a support 2, and temporary support can be formed due to the fact that an upper base plate 3 and a lower base plate 3 of the adjacent plate girders 1 are matched, so that girder falling is prevented;

(2) the whole bridge deck is displaced and cracked, and the upper and lower seat plates 3 can provide a certain deformation.

When the earthquake deformation displacement in the transverse bridge direction is responded: through horizontal spacing tooth 32 with buffer block 33, not only guaranteed adjacent the articulated of plate girder 1 joint end department, can resist the ascending effort in horizontal bridge direction moreover to certain declination range is provided.

In order to enhance the fixing performance to the fixing groove 31, the upper surface of the lower seat plate 3 is concavely provided with the fixing groove 31, and the bottom end of the transverse limiting tooth 32 is fixed in the fixing groove 31, so that the resistance to the transverse limiting tooth 32 is increased, and the transverse limiting tooth can bear larger acting force.

In order to enlarge the force-bearing direction and the acting direction of the transverse limiting teeth 32, the transverse limiting teeth 32 are cylindrical; moreover, in order to facilitate the buffer block 33 is sleeved on the transverse limiting teeth 32, cylindrical through holes for the transverse limiting teeth 32 to penetrate up and down are formed in the buffer block 33, and the shape and the size of each cylindrical through hole are consistent with those of the transverse limiting teeth 32.

In order to completely fill the gap between the plate girder 1 and increase the buffering effect of the buffer plate 5, the buffer plate 5 is in a zigzag shape, the zigzag buffer plate 5 comprises a first vertical buffer part 51, a horizontal buffer part 52 and a second vertical buffer part 53 which are sequentially arranged, and the first vertical buffer part 51, the horizontal buffer part 52 and the second vertical buffer part 53 are usually integrally formed; wherein the first vertical buffer part 51 is filled between the upper seat plate 4 and the connecting end part to fill the buffer plate 5 between the upper seat plate 4 of one of the plate girders 1 and the connecting end part of the other plate girder 1; the horizontal buffer part 52 is filled between the upper seat plate 4 and the lower seat plate 3 to fill the buffer plate 5 between the upper seat plate 4 and the lower seat plate 3; the second vertical buffer 53 is filled between the lower seat plate 3 and the connecting end, and the buffer plate 5 is filled between the lower seat plate 3 of the other plate girder 1 and the connecting end of the one plate girder 1. Therefore, the fold line-shaped buffer plate 5 can be matched with the connecting seat plate structure, the buffer performance of the connecting seat plate is improved, and the deformation resistance is improved.

In order to increase the firmness of the buffer plate 5, the second vertical buffer portion 53 of the buffer plate 5 is fixedly connected with the lower seat plate 3 through a viscous material, that is, the zigzag buffer plate 5 can be fixed on the surface of the lower seat plate 3 by using glue.

In order to fill the buffer plate 5 between two adjacent plate girders 1, especially between the upper seat plate 4 and the lower seat plate 3, the horizontal buffer part 52 of the buffer plate 5 is provided with the mounting hole 54, so that the zigzag buffer plate 5 can be conveniently mounted; in addition, the cross section of the mounting hole 54 should be not smaller than the cross section of the sliding slot 41, so as to prevent the buffer plate 5 from interfering with the sliding of the lateral limit tooth 32 in the sliding slot 41.

In addition, as will be appreciated by those skilled in the art, since the buffer block 33 and the buffer plate 5 have buffering performance and should have a certain flexibility, in the actual construction process, referring to fig. 6, the mounting hole 54 may be formed only in the horizontal buffer portion 52, and of course, referring to fig. 7, for convenience of construction, one mounting hole 54 may be formed in the first vertical buffer portion 51, and the two mounting holes 54 are integrally formed to form one large mounting hole 54.

In order to facilitate the fitting of the upper seat plate 4 and the lower seat plate 3, the sliding groove 41 formed in the upper seat plate 4 extends to an extending end of the upper seat plate 4, so that the transverse limit tooth 32 and the buffer block 33 can be quickly installed in the sliding groove 41, and it should be noted that the extending end of the upper seat plate 4 refers to an end of the upper seat plate 4 facing a joint of two adjacent plate girders 1.

As an option of the buffer material, the buffer plate 5 and the buffer block 33 are both made of rubber, considering practical applicability and cost.

As one of design examples of the above embodiments:

the height of the lower seat plate 3 can be the height of the beam/2 minus 0.5cm, and the length of the lower seat plate 3 can be 20 cm.

The middle of the lower seat plate 3 is provided with a fixing groove 31 with the width of 20cm, the length of 20cm and the depth of 1cm, the fixing groove 31 is internally fixed with a cylindrical transverse limiting tooth 32 with the height of 11cm and the radius of 9cm, and a buffer block 33 made of rubber is sleeved outside the cylindrical transverse limiting tooth 32.

The height of the buffer block 33 made of rubber is 11cm, the length and the width are both 20cm, and a cylindrical through hole with the radius of 9cm is formed in the middle of the book searching buffer block 33.

The height of the upper seat plate 4 is reduced by 0.5cm from the height/2 of the beam, and the length is 20 cm.

The upper seat plate 4 is provided with a sliding groove 41 with the width of 20cm, the length of 20cm and the depth of 10cm, and the position of the sliding groove 41 corresponds to the position of the transverse limiting tooth 32 up and down.

Go up bedplate 4 and connection end's seam width and down bedplate 3 and connection end's joint seam width is 2 ~ 4cm, gap department between two plate girders 1 sets up the dogleg shape of rubber material buffer board 5, buffer board 5 is corresponding horizontal spacing tooth 32 buffer block 33 and the partial trompil of spout 41, the dogleg shape the thickness of buffer board 5's horizontal part is 1cm, and vertical part is with the seam width. The fold line-shaped buffer plate 5 is fixed on the surface of the lower seat plate 3 by glue.

In addition, as a deepening of the earthquake falling prevention structure, since a specific structure in each of the above embodiments is required between two plate girders 1, when the positions of the plate girders 1 are different on the whole bridge, the positions and the setting methods of the earthquake falling prevention structure need to be adapted to the positions of the plate girders 1.

Specifically, when the plate girder 1 is the initial frame girder 6, one end of the initial frame girder 6 is a vertical section, and the other end of the initial frame girder 6 and the lower seat plate 3 are integrally formed; when the plate girder 1 is the end frame girder 7, one end of the end frame girder 7 is a vertical section, and the other end is integrally formed with the upper seat plate 4; when the plate beam 1 is the middle beam 8, one end of the middle beam 8 and the upper seat plate 4 are integrally formed, and the other end of the middle beam 8 and the lower seat plate 3 are integrally formed; when the middle beam 8 is the folding beam 9, the upper seat plate 4 is integrally formed at both ends of the folding beam 9.

Namely: when the plate girder is a starting frame girder 6, the starting frame end of the starting frame girder 6 is a vertical section, and the other end of the starting frame girder is the connecting end part integrally formed with the lower seat plate 3;

when the plate girder is the end frame girder 7, the end frame end of the end frame girder 7 is a vertical section, and the other end is the connecting end part which is integrally formed with the upper seat plate 4;

when the plate girder is the middle girder 8, one end of the middle girder 8 is the connecting end integrally formed with the upper seat plate 4, and the other end is the connecting end integrally formed with the lower seat plate 3;

when the middle beam is the folding beam 9, the two ends of the folding beam 9 are the connecting end parts which are integrally formed with the upper seat plate 4.

The starting beam 6 and the final beam 7 are disposed at two ends of a bridge, where the starting beam 6 is disposed at one end of the bridge and the final beam 7 is disposed at the other end of the bridge in a normal case, but in some cases, the starting beams 6 may be disposed at two ends of the bridge.

In order to improve the overall performance of the plate girder 1 in preventing the earthquake from falling, the utility model further provides a plate girder system, which comprises the structure of preventing the earthquake from falling. Namely, the plate girder system is built by a plurality of plate girders 1 according to the earthquake-proof beam falling structure.

The relationship between the plate girder 1 and the plate girder 1 may be specifically that, when the initial girder 6 is arranged at one end of the girder bridge and the final girder 7 is arranged at the other end of the girder bridge, referring to fig. 12, the intermediate girder 8 is usually arranged between the initial girder 6 and the final girder 7 to integrate the plurality of plate girders 1; for example: a start beam 6, a middle beam 8, a finish beam 7.

When the initial frame beams 6 can be arranged at both ends of the girder bridge, referring to fig. 13, the folding beam 9 needs to be arranged between the middle beam 8 and the middle beam 8 or between the two initial frame beams 6 to integrally construct the plate girder 1. For example: an original girder 6, a middle girder 8, a.

In addition, it should be noted that the earthquake-proof beam falling structure or the plate girder system according to any of the above embodiments may also be used in connection with an entire girder bridge, so as to obtain a multi-span plate girder bridge and improve the earthquake-proof performance of the girder bridge.

In the above technical solutions, the above are only preferred embodiments of the present invention, and the technical scope of the present invention is not limited thereby, and all the technical concepts of the present invention include the claims of the present invention, which are directly or indirectly applied to other related technical fields by using the equivalent structural changes made in the content of the description and the drawings of the present invention.

Claims (10)

1. An earthquake-proof beam falling structure suitable for a multi-span plate beam bridge comprises a plurality of plate beams which are sequentially connected and a support arranged below the plate beams, and is characterized by further comprising a connecting seat plate structure positioned at the connecting end part of two adjacent plate beams;

the connecting seat plate structure comprises a lower seat plate and an upper seat plate positioned above the lower seat plate, the lower seat plate is integrally formed and arranged at the lower part of the connecting end part of one of the two adjacent plate beams, the upper seat plate is integrally formed and arranged at the upper part of the connecting end part of the other one of the two adjacent plate beams, and when the two adjacent plate beams are butted, the upper seat plate is placed above the lower seat plate so as to butt and fix the two adjacent plate beams;

a transverse limiting tooth is fixedly arranged on the upper surface of the lower seat plate, which bears the upper seat plate, a buffer block is sleeved on the transverse limiting tooth, and a sliding groove which is used for mounting the transverse limiting tooth and the buffer block and is arranged along the bridge direction is formed in the lower surface of the upper seat plate, which faces the lower seat plate;

and a buffer plate is filled between every two adjacent plate beams, and a mounting hole for the transverse limiting tooth and the buffer block to penetrate through is formed in the buffer plate.

2. The structure of claim 1, wherein the upper surface of the lower seat plate is concavely provided with a fixing groove, and the bottom end of the transverse limiting tooth is fixed in the fixing groove.

3. The structure of claim 1, wherein the lateral limiting teeth are cylindrical, and the buffer block is provided with a cylindrical through hole for the lateral limiting teeth to penetrate through.

4. The earthquake-proof beam falling structure according to claim 1, wherein the buffer plate is in a zigzag shape, and the zigzag-shaped buffer plate comprises a first vertical buffer part, a horizontal buffer part and a second vertical buffer part which are arranged in sequence; the first vertical buffer part is filled between the upper seat plate and the connecting end part, the horizontal buffer part is filled between the upper seat plate and the lower seat plate, and the second vertical buffer part is filled between the lower seat plate and the connecting end part.

5. The earthquake resistant beam structure according to claim 4, wherein the second vertical buffer portion of the buffer plate is fixedly connected with the lower seat plate by an adhesive material.

6. The structure of claim 4, wherein the horizontal buffer portion of the buffer plate is provided with the mounting hole, and the cross section of the mounting hole is not smaller than the cross section of the sliding groove.

7. The structure of claim 1, wherein the sliding slot of the upper seat plate extends to an extending end of the upper seat plate.

8. The structure of claim 1, wherein the bumper plate and the bumper block are both made of rubber.

9. A seismic drop prevention beam structure according to any one of claims 1 to 8,

when the plate beam is a starting beam, the starting end of the starting beam is a vertical section, and the other end of the starting beam is the connecting end integrally formed with the lower seat plate;

when the plate girder is a final frame girder, the final frame end of the final frame girder is a vertical section, and the other end of the final frame girder is the connecting end part integrally formed with the upper seat plate;

when the plate beam is a middle beam, one end of the middle beam is the connecting end integrally formed with the upper seat plate, and the other end of the middle beam is the connecting end integrally formed with the lower seat plate;

when the middle beam is a folding beam, the two ends of the folding beam are both the connecting end parts which are integrally formed with the upper seat plate.

10. A slab system comprising a seismic fall arrest beam construction according to any one of claims 1 to 9.

Images