CN112942072A - Beam falling prevention structure of assembled bridge - Google Patents
Beam falling prevention structure of assembled bridge Download PDFInfo
- Publication number
- CN112942072A CN112942072A CN202110153053.7A CN202110153053A CN112942072A CN 112942072 A CN112942072 A CN 112942072A CN 202110153053 A CN202110153053 A CN 202110153053A CN 112942072 A CN112942072 A CN 112942072A
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- Prior art keywords
- mounting seat
- buffer
- pier
- beam body
- bridge
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of bridge construction, and particularly discloses an assembly type bridge anti-falling structure, which is characterized in that: the device comprises a bridge pier fixedly connected with the ground, wherein a coaxial circular truncated cone-shaped connecting seat is arranged at the top end of the bridge pier, and a coaxial positioning shaft is fixedly connected to the top end of the connecting seat; the top end of the positioning shaft is in threaded connection with an annular mounting seat, and the mounting seat is detachably connected with the pier through bolts; the bottom of the mounting seat is provided with a groove of a coaxial line; a plurality of sliding grooves are distributed in the circumferential circular array of the mounting seat, fixing columns are connected in the sliding grooves in a sliding mode and extend into the grooves, and return springs are arranged between the fixing columns and the mounting seat; the top of the pier is provided with a beam body which is symmetrical about the mounting seat, the thickness of the beam body is the same as that of the connecting mounting seat, two ends of the beam body are both provided with semicircular openings connected with the mounting seat, and the openings are provided with semicircular limiting grooves; the invention aims to solve the problem that the installation process of the beam falling prevention device in the existing assembly type bridge is complicated.
Description
Technical Field
The invention relates to the technical field of bridge construction, and particularly discloses an assembly type bridge anti-falling structure.
Background
The assembled bridge has reliable quality, intelligent steel bar processing, prefabricated factory components and standardized program construction. High-precision positioning ensures the inherent quality of the bridge prefabricated part. The construction speed is high, and one of the main advantages of the assembled bridge is that the construction speed is high and the interference to surrounding traffic is small. When the pile foundation construction is carried out, the prefabrication of the pier column, the abutment and the beam plate can be carried out, and the installation can be carried out while the construction is carried out. The time period with small traffic interference at night is fully utilized, one to two lanes are blocked, and then the bridge member assembling operation can be carried out. The connection stability between the girder body and the pier in the assembled bridge is especially important, in the area with frequent earthquakes, the girder body is separated due to the earthquakes, and the damage of the bridge is caused, and the girder falling prevention device of the existing assembled bridge adopts a steel structure to connect the girder body and the pier, so that the installation process of the bridge is more complicated.
Disclosure of Invention
The invention aims to provide an assembly type bridge anti-falling structure, and aims to solve the problem that an existing assembly type bridge anti-falling device is complex in installation process.
In order to achieve the purpose, the basic scheme of the invention is as follows:
the utility model provides an assembled bridge prevents roof beam structure that falls which characterized in that: the device comprises a bridge pier fixedly connected with the ground, wherein a coaxial circular truncated cone-shaped connecting seat is arranged at the top end of the bridge pier, and a coaxial positioning shaft is fixedly connected to the top end of the connecting seat; the top end of the positioning shaft is in threaded connection with an annular mounting seat, and the mounting seat is detachably connected with the pier through bolts; the bottom of the mounting seat is provided with a coaxial groove, and the groove is matched with the shape of the connecting seat; a plurality of sliding grooves are distributed in the circumferential circular array of the mounting seat, fixing columns are connected in the sliding grooves in a sliding mode, one ends of the fixing columns extend into the grooves, and return springs are arranged between the fixing columns and the mounting seat; the pier top is provided with the roof beam body about the mount pad symmetry, and roof beam body thickness is the same with being connected mount pad thickness, and the semi-circular opening of being connected with the mount pad is all seted up at roof beam body both ends, and semi-annular spacing groove is seted up to the opening part, and the spacing groove is used for holding the fixed column.
Optionally, two ends of the side wall of the mounting seat are provided with annular grooves, the annular grooves are coaxial with the mounting seat, a plurality of buffer units are arranged in the annular grooves, each buffer unit comprises two buffer plates, the middle parts of the two buffer plates are mutually hinged, torsional springs are arranged at the hinged parts, and buffer springs are fixed between the buffer plates; a limiting rod is fixed at the end part of the buffer plate facing the mounting seat and is connected in the annular groove in a sliding manner; the end parts of the beam bodies are provided with buffer rubber layers.
Optionally, a plurality of positioning columns are fixed to the bottoms of the two ends of the beam body, positioning grooves matched with the positioning columns are formed in the top of the pier, the positioning grooves are distributed around the circular array of the mounting seat, a U-shaped channel is formed in the bottom of each positioning groove, a connecting rope is arranged in each channel, one end of each connecting rope is connected with the corresponding positioning column, the other end of each connecting rope is connected with the mounting seat, an annular groove of a coaxial line is formed in the top of the pier, and the annular groove is communicated with the.
Optionally, an i-shaped annular connecting platform is arranged between the connecting seat and the bridge pier, the connecting platform is embedded and fixed in the bridge pier, and the surface of the connecting platform is exposed out of the bridge pier; the connecting seat is detachably connected with the surface of the connecting table.
Optionally, the buffer board all rotates on the tip towards the roof beam body and is connected with the stand of vertical setting, the lateral wall and the roof beam body tip contact of stand.
Optionally, a damping spring is arranged between the adjacent buffer units, and two ends of the damping spring are respectively connected with the end portions of the adjacent buffer plates.
Optionally, an arc-shaped buffer gap is arranged between the mounting seat and the beam body, and the widths of two ends of the buffer gap are gradually reduced.
The working principle and the beneficial effects of the scheme are as follows:
1. in the scheme, after the beam body is installed, the installation seat is rotated in the forward direction, and in the process that the installation seat moves downwards, the limiting column in the installation seat is extruded by the connecting seat, so that the end part of the limiting column slides out of the sliding groove and extends into the limiting groove, the vertical and transverse fixing between the beam body and the pier is completed through the matching between the limiting column and the limiting groove, the beam body is prevented from being separated from the pier due to vibration, and the whole installation process is simple and rapid; in addition, in the earthquake process, the damage condition of the beam falling prevention device is most serious, in the scheme, only the mounting seat needs to be rotated reversely, the limiting column retracts into the sliding groove under the action of the reset spring, the mounting seat is integrally replaced, the whole maintenance process is extremely simple and convenient, and the rapid earthquake post-earthquake disaster relief is facilitated.
2. In the scheme, in the earthquake process, the beams move in opposite directions due to vibration in the horizontal direction, and in the opposite movement process of the beams, the beams firstly impact the buffer units on the mounting seats, the buffer plates on the buffer units are extruded to swing the buffer plates, so that the buffer springs are extruded, the energy consumption and the shock absorption are carried out by utilizing the buffer springs, and the beams are prevented from being rigidly collided to cause damage to the beams; in addition, when the beam body strikes on the mounting seat, due to the arc-shaped surface of the mounting seat, the contact area between the beam body and the mounting seat is increased, so that the pressure between the beam bodies is smaller, and the damage caused by the transverse collision of the beam body is reduced.
3. In this scheme, the mount pad is at rotatory in-process, and the tip that drives the connection rope rotates, will connect the rope and tighten, plays the vertical ascending fixed of second time to the roof beam body through the cooperation between connection rope and the passageway, further strengthens the stability of the roof beam body.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a longitudinal cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic structural view of a mounting base in the practice of the present invention;
fig. 5 is a schematic structural diagram of a buffer unit according to an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the bridge structure comprises a bridge pier 1, a connecting seat 2, a positioning shaft 3, a mounting seat 4, a fixing column 5, a beam body 6, a limiting groove 7, a buffer gap 8, an annular groove 9, a buffer plate 10, a buffer spring 11, a limiting rod 12, a positioning column 13, a positioning groove 14, a channel 15, a groove 16, a connecting rod 17, a stand column 18, a damping spring 19 and a buffer unit 20.
Examples
As shown in fig. 1, 2, 3, 4 and 5:
an assembled bridge anti-falling beam structure comprises a bridge pier 1 fixedly connected with the ground, wherein a coaxial circular truncated cone-shaped connecting seat 2 is arranged at the top end of the bridge pier 1, and a coaxial positioning shaft 3 is fixedly connected to the top end of the connecting seat 2; the top end of the positioning shaft 3 is in threaded connection with an annular mounting seat 4, and the mounting seat 4 is detachably connected with the pier 1 through bolts; the bottom of the mounting seat 4 is provided with a coaxial groove 16, and the groove 16 is matched with the shape of the connecting seat 2; a plurality of sliding grooves are distributed in a circular array on the periphery of the mounting seat 4, fixing columns 5 are connected in the sliding grooves in a sliding mode, one ends of the fixing columns 5 extend into the grooves 16, and return springs (not shown in the drawing) are arranged between the fixing columns 5 and the mounting seat 4; the top of the pier 1 is provided with a beam body 6 which is symmetrical about the mounting seat 4, the thickness of the beam body 6 is the same as that of the mounting seat 4, the two ends of the beam body 6 are provided with semicircular openings connected with the mounting seat 4, the opening is provided with a semicircular limiting groove 7, and the limiting groove 7 is used for accommodating the fixing column 5.
After the beam body 6 is installed, the installation seat 4 is rotated in the forward direction, and in the process that the installation seat 4 moves downwards, the limiting column in the installation seat 4 is extruded by the connection seat 2, so that the end part of the limiting column slides out of the sliding groove and extends into the limiting groove 7, the vertical and horizontal fixation between the beam body 6 and the pier 1 is completed through the matching between the limiting column and the limiting groove 7, the beam body 6 is prevented from being separated from the pier 1 due to vibration, and the whole installation process is simple and rapid; in addition, in the earthquake process, the damage condition of the beam falling prevention device is most serious, in the scheme, only the mounting seat 4 needs to be rotated reversely, the limiting column retracts into the sliding groove under the action of the reset spring, the mounting seat 4 is integrally replaced, the whole maintenance process is extremely simple and convenient, and the rapid earthquake post-earthquake disaster relief is facilitated
Optionally, two ends of the side wall of the mounting seat 4 are provided with annular grooves 9, the annular grooves 9 are coaxial with the mounting seat 4, a plurality of buffer units 20 are arranged in the annular grooves 9, each buffer unit 20 comprises two buffer plates 10, the middle parts of the buffer plates are mutually hinged, torsion springs are arranged at the hinged parts, and buffer springs 11 are fixed between the buffer plates 10; a limiting rod 12 is fixed at the end part of the buffer plate 10 facing the mounting seat 4, and the limiting rod 12 is connected in the annular groove 9 in a sliding manner; the end parts of the beam bodies 6 are provided with buffer rubber layers.
In the earthquake process, the beams 6 move in opposite directions due to vibration in the horizontal direction, in the opposite movement process of the beams 6, the beams 6 firstly impact the buffer units 20 on the mounting seats 4, the buffer plates 10 on the buffer units 20 are extruded to enable the buffer plates 10 to swing, so that the buffer springs 11 are extruded, energy dissipation and shock absorption are carried out by the buffer springs 11, and the beams 6 are prevented from being rigidly collided to cause damage to the beams 6; in addition, when the beam body 6 impacts the mounting seat 4, the contact area between the beam body 6 and the mounting seat 4 is increased due to the arc-shaped surface of the mounting seat 4, so that the pressure between the beam bodies 6 is smaller, and the damage caused by the transverse collision of the beam bodies 6 is reduced; and the cushion rubber layer further cushions the beam body 6, reduces and reduces the damage that beam body 6 lateral collision caused.
Optionally, a plurality of positioning columns 13 are fixed at the bottoms of two ends of the beam body 6, positioning grooves 14 matched with the positioning columns 13 are formed in the top of the pier 1, the positioning grooves 14 are distributed around the circular array of the mounting seat 4, a U-shaped channel 15 is formed in the bottom of each positioning groove 14, a connecting rope (not shown in the figure) is arranged in each channel 15, one end of the connecting rope is connected with the positioning columns 13, corresponding hooks (not shown in the figure) are poured at the bottom of the mounting seat 4 and connected with the other end of the connecting rope, a coaxial annular groove 16 is formed in the top of the pier 1, the annular groove 16 is communicated with the channel 15, and the hooks extend into the groove 16.
The mounting seat 4 is arranged in front of the positioning shaft 3, the connecting rope is hung on the hook, and meanwhile, the connecting rope is convenient to take down when the mounting seat 4 is replaced subsequently; mount pad 4 drives the tip of connecting the rope and rotates at the forward rotation in-process, will connect the rope and tighten, plays the vertical fixed of going up of second time to roof beam body 6 through the cooperation of connecting between rope and the passageway 15, further strengthens roof beam body 6's stability.
Optionally, an i-shaped annular connecting platform is arranged between the connecting seat 2 and the pier 1, the connecting platform is embedded and fixed in the pier 1, and the surface of the connecting platform is exposed out of the pier 1; the connecting seat 2 is detachably connected with the surface of the connecting table.
In the earthquake process, the threads between the positioning shaft 3 and the mounting seat 4 are easy to damage, the connecting seat 2 and the connecting column can be detachably connected in a bolt mode, and the connecting seat 2 can be detached and maintained together when the mounting seat 4 is replaced.
Optionally, vertically arranged upright posts 18 are rotatably connected to the end portions, facing the beam body 6, of the buffer plates 10, and the side walls of the upright posts 18 are in contact with the end portion of the beam body 6.
Through setting up the stand 18 of rotating the connection, when the roof beam body 6 striking on buffer unit 20, stand 18 laminating roof beam body 6 surface rolls to drive the buffer board 10 swing, avoid the direct striking between roof beam body 6 and the buffer board 10, cause roof beam body 6 surface impaired.
Optionally, a damping spring 19 is disposed between the adjacent damping units 20, and both ends of the damping spring 19 are respectively connected with the end portions of the adjacent damping plates 10.
The shock absorption and buffering between the buffer units 20 are performed through the shock absorption springs 19, so that when the buffer units 20 are impacted by the beam body 6, collision between the buffer units 20 is prevented, and the buffer units 20 are prevented from being damaged.
Optionally, an arc-shaped buffer gap 8 is arranged between the mounting seat 4 and the beam body 6, and the width of each of two ends of the buffer gap 8 is gradually reduced.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (7)
1. The utility model provides an assembled bridge prevents roof beam structure that falls which characterized in that: the device comprises a bridge pier fixedly connected with the ground, wherein a coaxial circular truncated cone-shaped connecting seat is arranged at the top end of the bridge pier, and a coaxial positioning shaft is fixedly connected to the top end of the connecting seat; the top end of the positioning shaft is in threaded connection with an annular mounting seat, and the mounting seat is detachably connected with the pier through bolts; the bottom of the mounting seat is provided with a coaxial groove, and the groove is matched with the shape of the connecting seat; a plurality of sliding grooves are distributed in the circumferential circular array of the mounting seat, fixing columns are connected in the sliding grooves in a sliding mode, one ends of the fixing columns extend into the grooves, and return springs are arranged between the fixing columns and the mounting seat; the pier top is provided with the roof beam body about the mount pad symmetry, and roof beam body thickness is the same with being connected mount pad thickness, and the semi-circular opening of being connected with the mount pad is all seted up at roof beam body both ends, and semi-annular spacing groove is seted up to the opening part, and the spacing groove is used for holding the fixed column.
2. The assembled bridge drop prevention structure of claim 1, wherein: two ends of the side wall of the mounting seat are provided with annular grooves, the annular grooves are coaxial with the mounting seat, a plurality of buffer units are arranged in the annular grooves, each buffer unit comprises two buffer plates, the middle parts of the buffer plates are mutually hinged, torsional springs are arranged at the hinged parts, and buffer springs are fixed between the buffer plates; a limiting rod is fixed at the end part of the buffer plate facing the mounting seat and is connected in the annular groove in a sliding manner; the end parts of the beam bodies are provided with buffer rubber layers.
3. An assembled bridge drop prevention structure as defined in claim 2, wherein: the utility model discloses a bridge structure, including the installation seat, the installation seat is connected with the pier, the pier top is seted up and is connected with the reference column, the locating column both ends bottom all is fixed with a plurality of reference columns, the pier top set up with reference column complex constant head tank, and the constant head tank distributes around the circular array of installation seat, the passageway of U type is seted up to the constant head tank bottom, be provided with in the passageway and connect the rope, the one end of connecting the rope is connected with the reference column, the other end of connecting the.
4. An assembled bridge drop prevention structure as defined in claim 3, wherein: an I-shaped annular connecting platform is arranged between the connecting seat and the bridge pier, the connecting platform is embedded and fixed in the bridge pier, and the surface of the connecting platform is exposed out of the bridge pier; the connecting seat is detachably connected with the surface of the connecting table.
5. An assembled bridge drop prevention structure as defined in claim 4, wherein: the buffer board all rotates on the tip towards the roof beam body and is connected with the stand of vertical setting, the lateral wall and the roof beam body tip contact of stand.
6. An assembled bridge drop prevention structure as defined in claim 5, wherein: and a damping spring is arranged between the adjacent buffer units, and two ends of the damping spring are respectively connected with the end parts of the adjacent buffer plates.
7. An assembled bridge drop prevention structure as defined in claim 6, wherein: an arc-shaped buffer gap is arranged between the mounting seat and the beam body, and the widths of two ends of the buffer gap are gradually reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110153053.7A CN112942072B (en) | 2021-02-04 | 2021-02-04 | Beam falling prevention structure of assembled bridge |
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|---|---|---|---|
| CN202110153053.7A CN112942072B (en) | 2021-02-04 | 2021-02-04 | Beam falling prevention structure of assembled bridge |
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| CN112942072A true CN112942072A (en) | 2021-06-11 |
| CN112942072B CN112942072B (en) | 2022-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232465A (en) * | 2022-01-14 | 2022-03-25 | 宁波市高等级公路建设管理中心 | Box girder bridge prevents roof beam device that falls |
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| CN114232465B (en) * | 2022-01-14 | 2024-02-02 | 宁波市高等级公路建设管理中心 | Girder falling prevention device for box girder bridge |
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| CN112942072B (en) | 2022-04-12 |
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