CN114411533B - Quick-replaceable multistage energy-consumption beam falling prevention device and installation method thereof - Google Patents
Quick-replaceable multistage energy-consumption beam falling prevention device and installation method thereof Download PDFInfo
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- CN114411533B CN114411533B CN202210233862.3A CN202210233862A CN114411533B CN 114411533 B CN114411533 B CN 114411533B CN 202210233862 A CN202210233862 A CN 202210233862A CN 114411533 B CN114411533 B CN 114411533B
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- 238000005265 energy consumption Methods 0.000 title claims abstract description 54
- 230000002265 prevention Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000009434 installation Methods 0.000 title abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 238000006073 displacement reaction Methods 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 3
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a multi-stage energy consumption beam falling prevention device capable of being replaced quickly and an installation method thereof; the bridge comprises a horizontal fixed end, a vertical fixed end and an arc-shaped plate, wherein the horizontal fixed end is anchored on an external beam body, the vertical fixed end is anchored on a bridge pier, the arc-shaped plates are alternately arranged on the horizontal fixed end and the vertical fixed end, the surface of the arc-shaped plate is connected with an SMA energy dissipation piece in series, one end of the arc-shaped plate is detachably connected with a thin-wall steel drum energy dissipation assembly, the surface of the horizontal fixed end and the surface of the vertical fixed end are detachably connected with a plurality of bolts, the surfaces of the bolts are matched with connecting nuts, the SMA energy dissipation piece penetrates through reserved holes on each arc-shaped plate, each arc-shaped plate is connected in series and fixed, the normal operation state of the bridge is ensured, when the beam body and the bridge pier are relatively displaced, the arc-shaped plate drives the SMA energy dissipation piece to perform multi-waveform bending deformation and dissipates seismic energy, and when the relative displacement is relatively large, the arc-shaped plate extrudes the thin-wall steel drum energy dissipation assembly and dissipates seismic energy. The invention has clear concept, clear principle, easy production and convenient replacement.
Description
Technical Field
The invention relates to the field of bridge engineering construction, in particular to a multi-stage energy-consumption beam falling prevention device capable of being replaced quickly and an installation method thereof.
Background
Between the Pacific seismic zone and the European seismic zone of the land of China, most areas of the national soil are earthquake areas, particularly, most of western areas of China are strong earthquake areas, the earthquake activities are frequent, and the construction of bridges with large quantity and wide area of China inevitably brings new challenges to bridge design. The bridge is used as one of life line engineering, and is shouldered with the heavy duty of earthquake relief and post-disaster reconstruction. The girder falling prevention device is a limiting device arranged between the girder and the abutment for preventing the girder from falling off from the abutment in the bridge. The beam falling prevention device can limit the longitudinal relative displacement of adjacent beam bodies or pier beams at the bridge expansion joints, and is an effective measure for preventing the beam falling from being damaged. However, currently, the bridge built in the high intensity area of China is rarely provided with a beam falling prevention device.
The invention discloses a beam falling prevention device, which comprises an upper plate, a lower plate, a limiting device and a damping energy consumption device, wherein the limiting device is arranged on the upper plate; the damping energy consumption device comprises an arc damping rod and a T-shaped limiting head which are arranged in the longitudinal direction and the transverse direction; the limiting device comprises a first limiting seat and a second limiting seat, the first limiting seat comprises a bottom plate and a coaming, and a clamping groove is formed in the edge, facing the second limiting seat, of the bottom plate; the top of the coaming is fixedly connected with the bottom surface of the upper plate, and the lower end of each damping rod is hinged with the lower plate; the T-shaped limiting head comprises a head part and a neck part which is vertically and fixedly connected with the head part, the neck part is arranged in an area between a clamping groove of the first limiting seat and a clamping groove of the second limiting seat, the head part is arranged in an area between a coaming of the first limiting seat and a coaming of the second limiting seat, and a gap is arranged between the head part and the coaming. The invention can simultaneously establish the transverse and longitudinal constraints, and can also simultaneously play the role of energy consumption in the longitudinal and transverse directions of the bridge body, thereby more effectively protecting the bridge structure from earthquake damage.
However, there are some problems in the use process of the existing beam falling prevention device, and in view of the serious earthquake-proof situation in China and the current situation of large-scale bridge construction, it is necessary to develop a beam falling prevention device with simple structure, clear stress and obvious effect, so that the beam falling prevention device effectively limits the excessive displacement of the bridge under the action of an earthquake and prevents the occurrence of sudden damage such as beam falling.
Disclosure of Invention
The invention aims to provide a multi-stage energy-consumption beam falling prevention device capable of being replaced quickly and an installation method thereof, so as to solve the problems in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: the energy-saving bridge comprises a horizontal fixed end, a vertical fixed end and an arc plate, wherein the horizontal fixed end is anchored on an external beam body, the vertical fixed end is anchored on a bridge pier, the arc plate is alternately arranged on the horizontal fixed end and the vertical fixed end, the surface of the arc plate is connected with an SMA energy consumption piece in series, and one end of the arc plate is detachably connected with a thin-wall steel drum energy consumption assembly;
the horizontal fixed end and the vertical fixed end are detachably connected with a plurality of bolts, and the surfaces of the bolts are matched with connecting nuts.
Preferably, the arc plate is made of high-strength steel and welded on the horizontal fixing end and the vertical fixing end.
Preferably, the arc plates of the horizontal fixing end and the arc plates of the vertical fixing end are alternately arranged and are concentric circles, and the arc length of the arc plate close to the joint of the beam body and the bridge pier is shortest and sequentially lengthens outwards.
Preferably, the distances between the adjacent arc plates are consistent; holes are formed in the arc-shaped plates, and the centers of the holes in the adjacent arc-shaped plates are in the same straight line.
Preferably, the SMA energy dissipation member is made of shape memory alloy, the upper and lower surfaces of the SMA energy dissipation member are provided with a plurality of grooves, and the cross-sectional size of the SMA energy dissipation member is slightly smaller than the size of the reserved holes on the arc plate.
Preferably, the cross section size of the end part of the arc plate is slightly larger than the size of the reserved hole on the arc plate, and the SMA energy consumption piece penetrates through the reserved hole on the arc plate to connect the arc plates in series.
Preferably, the thin-wall steel drum energy consumption component is made of low-yield-point mild steel and is arranged on one side of the arc-shaped plate.
Preferably, the thin-wall steel drum energy consumption components arranged on the horizontal fixing end and the arc plates arranged on the vertical fixing end have a one-to-one correspondence.
Preferably, the thin-wall steel drum energy consumption components arranged on the vertical fixing end and the arc plates arranged on the horizontal fixing end have a one-to-one correspondence.
A method for installing a multi-stage energy-consumption beam falling prevention device capable of being replaced quickly comprises the following steps:
when the connecting device is used, the surfaces of the horizontal fixing end and the vertical fixing end are alternately matched and connected with a plurality of arc plates, and a plurality of holes are formed in the surfaces of the arc plates so as to be convenient for connection with an external structure;
step two, arranging an SMA energy consumption piece in the hole, effectively fixing the arc plate through the SMA energy consumption piece, and shaping the whole;
step three, a plurality of thin-wall steel drum energy consumption components can be connected on one side of the vertical fixing end and one side of the horizontal fixing end in a matching way, and the thin-wall steel drum energy consumption components have a one-to-one correspondence with the arc plates when being installed;
and fourthly, connecting a plurality of bolts on the surfaces of the vertical fixing end and the horizontal fixing end in a matched manner, and connecting the bolts through nuts to enable the bolts to be installed with other structures.
Compared with the prior art, the invention has the beneficial effects that:
1. the multistage energy-consumption anti-falling beam device horizontal fixed end of quick replacement anchors on the external beam body, vertical fixed end anchors on the pier, under normal use condition, SMA power consumption piece passes the preformed hole on each arc, establish ties each arc, can satisfy bridge emergence temperature expansion, or vibration that the vehicle arouses, when the earthquake effect, take place less relative displacement between beam body and the pier, arc and the arc of welding on vertical fixed end produce relative dislocation, and drive SMA power consumption piece and take place multi-wave shape bending deformation along the preformed groove, this is first power consumption protection line, when beam body and pier take place great relative displacement, first power consumption protection line is destroyed, arc extrusion welding on vertical fixed end's thin wall steel drum power consumption subassembly, arc extrusion welding on vertical fixed end is in thin wall steel drum power consumption subassembly on the horizontal fixed end, this is the second power consumption protection line, SMA piece passes the preformed hole on each energy consumption bridge, with each arc and fixed, ensure that the relative displacement takes place between beam body and the pier, the relative displacement takes place the waveform is carried out in the arc, the relative displacement is carried out to the thin wall steel drum power consumption subassembly when the bridge, the vibration is more than normal, the waveform energy consumption is carried out to the arc. The invention has clear concept, clear principle, easy production and convenient replacement.
Drawings
FIG. 1 is a schematic diagram of a multi-stage energy-consuming anti-drop beam apparatus that can be quickly replaced;
FIG. 2 is a schematic view of an arcuate plate;
FIG. 3 is a schematic diagram of an SMA energy consumption piece;
FIG. 4 is a schematic diagram of a thin wall steel drum dissipative assembly.
In the figure: 1. a horizontal fixed end; 2. a vertical fixed end; 3. an arc-shaped plate; 4. SMA energy consumption piece; 5. the thin-wall steel drum energy consumption assembly; 6. a bolt; 7. a screw cap; 8. holes.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Referring to fig. 1-4, an overall structure schematic diagram of a rapidly replaceable multi-stage energy-consumption beam falling prevention device and an installation method thereof comprises a horizontal fixed end 1, a vertical fixed end 2 and an arc plate 3, wherein the horizontal fixed end 1 is anchored on a beam body, the vertical fixed end 2 is anchored on a pier, the arc plate 3 is alternately installed on the horizontal fixed end 1 and the vertical fixed end 2, the surface of the arc plate 3 is connected with an SMA energy consumption piece 4 in series, and one end of the arc plate 3 is detachably connected with a thin-wall steel drum energy consumption assembly 5;
the surfaces of the horizontal fixing end 1 and the vertical fixing end 2 are detachably connected with a plurality of bolts 6, and the surfaces of the bolts 6 are matched with connecting nuts 7.
Specifically, the arc plate 3 is made of high-strength steel and welded on the horizontal fixing end 1 and the vertical fixing end 2.
Specifically, the arc plate 3 of the horizontal fixed end 1 and the arc plate 3 of the vertical fixed end 2 alternately appear and are concentric circles, and the arc plate 3 near the junction of the beam body and the bridge pier has the shortest arc length and sequentially lengthens outwards.
Specifically, the distances between the adjacent arc plates 3 are consistent; holes 8 are formed in the arc plates 3, and centers of the holes 8 on the adjacent arc plates 3 are in the same straight line.
Specifically, the SMA energy dissipation member 4 is made of a shape memory alloy, a plurality of grooves are formed in the upper and lower surfaces of a portion of the SMA energy dissipation member 4, and the cross-sectional size of the portion of the SMA energy dissipation member 4 is slightly smaller than the size of the reserved hole 8 on the arc plate 3.
Specifically, the cross section size of the end part of the arc plate 3 is slightly larger than the size of the reserved hole 8 on the arc plate 3, and the SMA energy dissipation piece 4 passes through the reserved hole 8 on the arc plate 3 to connect the arc plates 3 in series.
Specifically, the thin-wall steel drum energy consumption component 5 is made of low-yield-point mild steel, and the thin-wall steel drum energy consumption component 5 is arranged on one side of the arc-shaped plate 3.
Specifically, the thin-wall steel drum energy consumption component 5 arranged on the horizontal fixed end 1 and the arc-shaped plate 3 arranged on the vertical fixed end 2 have a one-to-one correspondence.
Specifically, the thin-wall steel drum energy consumption component 5 arranged on the vertical fixed end 2 and the arc-shaped plate 3 arranged on the horizontal fixed end 1 have a one-to-one correspondence.
A method for installing a multi-stage energy-consumption beam falling prevention device capable of being replaced quickly comprises the following steps:
firstly, when the device is used, a plurality of arc plates 3 can be alternately matched and connected on the surface of the horizontal fixed end 1 and the surface of the vertical fixed end 2, and a plurality of holes 8 are formed on the surface of the arc plates 3 so as to be convenient for connection with an external structure;
step two, arranging an SMA energy consumption piece 4 in the hole 8, effectively fixing the arc plate 3 through the SMA energy consumption piece 4, and shaping the whole;
step three, a plurality of thin-wall steel drum energy consumption components 5 can be connected on one side of the vertical fixed end 2 and one side of the horizontal fixed end 1 in a matched mode, and the thin-wall steel drum energy consumption components 5 have a one-to-one correspondence with the arc plates 3 when being installed;
and step four, namely, a plurality of bolts 6 are connected on the surfaces of the vertical fixing end 2 and the horizontal fixing end 1 in a matched manner, and the bolts 6 are connected through nuts 7, so that other structures are installed.
The multistage energy dissipation and beam falling prevention device capable of being quickly replaced is characterized in that a horizontal fixed end 1 of the multistage energy dissipation and beam falling prevention device is anchored on a beam body, a vertical fixed end 2 is anchored on a bridge pier, under a normal use state, an SMA energy dissipation part 4 penetrates through reserved holes in each arc plate 3, each arc plate 3 is connected in series, temperature expansion of a bridge can be met, or vibration caused by a vehicle can be met, when an earthquake acts, small relative displacement occurs between the beam body and the bridge pier, the arc plates 3 welded on the horizontal fixed end 1 and the arc plates 3 welded on the vertical fixed end 2 generate relative dislocation, the SMA energy dissipation part 4 is driven to generate multi-waveform bending deformation along reserved grooves, the first energy dissipation and beam falling prevention line is broken when the beam body and the bridge pier are in a larger relative displacement, the arc plates 3 welded on the vertical fixed end 2 are extruded and welded on the thin-wall steel drum energy dissipation assembly 5 of the vertical fixed end 2, the SMA energy dissipation part 4 penetrates through reserved holes in each arc plates 3, the arc plates 3 are extruded and the bridge is relatively large in the vibration dissipation and beam falling prevention device, and the earthquake energy dissipation and the bridge is relatively guaranteed when the arc plates 3 are in a large relative displacement and the vibration dissipation and the bridge pier is relatively driven. The invention has clear concept, clear principle, easy production and convenient replacement.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. But quick replacement's multistage power consumption prevents roof beam device that falls, its characterized in that: the energy consumption device comprises a horizontal fixed end (1), a vertical fixed end (2) and an arc plate (3), wherein the horizontal fixed end (1) is anchored on an external beam body, the vertical fixed end (2) is anchored on a pier, the arc plate (3) is alternately arranged on the horizontal fixed end (1) and the vertical fixed end (2), the surface of the arc plate (3) is connected with an SMA energy consumption piece (4) in series, and one end of the arc plate (3) is detachably connected with a thin-wall steel drum energy consumption assembly (5);
the surfaces of the horizontal fixed end (1) and the vertical fixed end (2) are detachably connected with a plurality of bolts (6), and the surfaces of the bolts (6) are matched with connecting nuts (7);
the arc-shaped plate (3) is made of high-strength steel and welded on the horizontal fixed end (1) and the vertical fixed end (2);
the arc plates (3) of the horizontal fixed end (1) and the arc plates (3) of the vertical fixed end (2) are alternately arranged and are concentric circles, and the arc length of the arc plate (3) close to the joint of the beam body and the bridge pier is shortest and sequentially longer outwards;
the distances between the adjacent arc plates (3) are consistent; holes (8) are formed in the arc-shaped plates (3), and the centers of the holes (8) in the adjacent arc-shaped plates (3) are in the same straight line;
the SMA energy consumption piece (4) is made of shape memory alloy, a plurality of grooves are formed in the upper surface and the lower surface of the part of the SMA energy consumption piece (4), and the cross section size of the part of the SMA energy consumption piece (4) is slightly smaller than the size of a reserved hole (8) in the arc plate (3);
the cross section size of the end part of the arc-shaped plate (3) is slightly larger than the size of a reserved hole (8) on the arc-shaped plate (3), and the SMA energy consumption piece (4) penetrates through the reserved hole (8) on the arc-shaped plate (3) to connect the arc-shaped plates (3) in series;
the thin-wall steel drum energy consumption component (5) is made of low-yield-point mild steel, and the thin-wall steel drum energy consumption component (5) is arranged on one side of the arc-shaped plate (3);
the thin-wall steel drum energy consumption assembly (5) arranged on the horizontal fixed end (1) and the arc-shaped plate (3) arranged on the vertical fixed end (2) have a one-to-one correspondence;
the thin-wall steel drum energy consumption assembly (5) arranged on the vertical fixed end (2) and the arc-shaped plate (3) arranged on the horizontal fixed end (1) have a one-to-one correspondence;
when earthquake action, when the relative displacement takes place less between the roof beam body and the pier, arc (3) of welding on horizontal stiff end (1) and arc (3) of welding on vertical stiff end (2) produce relative dislocation to drive SMA power consumption piece (4) and take place the multi-waveform bending deformation along reserving the recess, this is first power consumption protection line, when the roof beam body takes place great relative displacement with the pier, first power consumption protection line is destroyed, arc (3) of welding on horizontal stiff end (1) extrusion welding is in thin wall steel drum power consumption subassembly (5) on vertical stiff end (2), arc (3) of welding on vertical stiff end (2) extrusion welding is in thin wall steel drum power consumption subassembly (5) on horizontal stiff end (1), this is the second power consumption protection line.
2. The method for installing the multi-stage energy-consumption beam falling prevention device capable of being replaced rapidly based on the method for installing the multi-stage energy-consumption beam falling prevention device of claim 1 is characterized in that: the method comprises the following steps:
when the device is used, a plurality of arc plates (3) can be alternately matched and connected on the surface of the horizontal fixed end (1) and the surface of the vertical fixed end (2), and a plurality of holes (8) are formed in the surface of the arc plates (3) so as to be convenient for connection with an external structure;
step two, arranging an SMA energy consumption piece (4) in the hole (8), effectively fixing the arc-shaped plate (3) through the SMA energy consumption piece (4), and shaping the whole;
step three, a plurality of thin-wall steel drum energy consumption components (5) can be connected on one side of the vertical fixed end (2) and one side of the horizontal fixed end (1) in a matching way, and the thin-wall steel drum energy consumption components (5) have a one-to-one correspondence with the arc plates (3) when being installed;
and fourthly, connecting a plurality of bolts (6) on the surfaces of the vertical fixing end (2) and the horizontal fixing end (1) in a matched manner, and connecting the bolts (6) through nuts (7) to enable the bolts to be installed with other structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210233862.3A CN114411533B (en) | 2022-03-09 | 2022-03-09 | Quick-replaceable multistage energy-consumption beam falling prevention device and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210233862.3A CN114411533B (en) | 2022-03-09 | 2022-03-09 | Quick-replaceable multistage energy-consumption beam falling prevention device and installation method thereof |
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| Publication Number | Publication Date |
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| CN114411533A CN114411533A (en) | 2022-04-29 |
| CN114411533B true CN114411533B (en) | 2024-02-06 |
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| CN202210233862.3A Active CN114411533B (en) | 2022-03-09 | 2022-03-09 | Quick-replaceable multistage energy-consumption beam falling prevention device and installation method thereof |
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| CN108442796A (en) * | 2018-05-21 | 2018-08-24 | 西安建筑科技大学 | A kind of replaceable arc mild steel plate for bean column node combines energy-consumption damper |
| CN108708475A (en) * | 2018-08-29 | 2018-10-26 | 沈阳建筑大学 | Barrel type tension and compression damper |
| CN109372147A (en) * | 2018-12-13 | 2019-02-22 | 周力强 | A kind of arcuate friction formula damper for reinforcing bean column node |
| CN112832578A (en) * | 2021-01-08 | 2021-05-25 | 北京工业大学 | Device for improving energy dissipation and self-resetting capability of beam-column joint |
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2022
- 2022-03-09 CN CN202210233862.3A patent/CN114411533B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101713226A (en) * | 2009-10-23 | 2010-05-26 | 广州大学 | Beam-column joint strengthening arc-shaped lead viscoelastic damper |
| CN205857376U (en) * | 2016-06-27 | 2017-01-04 | 华东建筑设计研究院有限公司 | A kind of novel joint attachment means being applicable to prefabricated concrete structure |
| JP6351198B1 (en) * | 2017-03-02 | 2018-07-04 | 广州大学 | A kind of beam column node structure and prefabricated house |
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| CN108708475A (en) * | 2018-08-29 | 2018-10-26 | 沈阳建筑大学 | Barrel type tension and compression damper |
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| CN114411533A (en) | 2022-04-29 |
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