CN110485287A - A kind of shock-absorbing type bridge expansion joint structure - Google Patents
A kind of shock-absorbing type bridge expansion joint structure Download PDFInfo
- Publication number
- CN110485287A CN110485287A CN201910821260.8A CN201910821260A CN110485287A CN 110485287 A CN110485287 A CN 110485287A CN 201910821260 A CN201910821260 A CN 201910821260A CN 110485287 A CN110485287 A CN 110485287A
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- channel steel
- plate
- bottom plate
- sleeve
- upper mounted
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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
- E01D19/06—Arrangement, construction or bridging of expansion joints
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of shock-absorbing type bridge expansion joint structures, it is related to highway bridge field, including expansion joint channel steel group, bottom plate and damping device, expansion joint channel steel group includes the first channel steel and the second channel steel, it is equipped with bottom plate and upper mounted plate between first channel steel and the second channel steel, multiple groups damping device is equipped between bottom plate and upper mounted plate.The present invention is by sliding into bottom plate, upper mounted plate along the side for the fixed card slot that the first channel steel, the second channel steel are opened up, installation is simple, effectively improve construction efficiency, first channel steel and the second channel steel are attached by bottom plate, upper mounted plate, strengthen the structural stability of the first channel steel and the second channel steel, it is equipped with multiple groups damping device between bottom plate and upper mounted plate, causes to shake when effectively buffering upper mounted plate Bending Deformation.
Description
Technical field
The present invention relates to highway bridge field, in particular to a kind of shock-absorbing type bridge expansion joint structure.
Background technique
Bridge expanssion joint is the important component of bridge superstructure, and conventional telescopic stitches main structure mainly by two pieces of heat
Integrally formed special section and the anchor bar composition for being welded and fixed are rolled, predominantly prevents the variation of temperature from causing road
Face structure is expanded with heat and contract with cold excessive and is damaged, but the buffering effect to vehicle Jing Guo produced vibration is general；And bridge
Also not enough securely, structural stability is poor for the structure at beam expansion joint, and vehicle crosses that there are security risks for a long time.It is in the prior art
A kind of dust-proof expanded joint structure is disclosed in CN208792146U, but by being surrounded by half in fashioned iron in the expanded joint structure
U-shaped reinforcement drawing bend structure is installed so that installing in expanded joint structure in the presence of with peripheral structure difficulty of matching coefficient height, bottom
Not stable enough disadvantage, furthermore according to dependence dimensioning simple in the bridge expansion joint structure design of different loads class requirement
Very little increasing is realized.
Summary of the invention
The purpose of the present invention is to provide a kind of shock-absorbing type bridge expanssion joint composite constructions, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of shock-absorbing type bridge expanssion joint composite construction, packet
Include expansion joint channel steel group, bottom plate and damping device, it is characterised in that: the expansion joint channel steel group includes symmetrically arranged
Welded by the bottom plate of more evenly distributed settings solid in the ipsilateral bottom end of one channel steel and the second channel steel, the first channel steel and the second channel steel
Fixed, for insole board perpendicular to two channel steel length extending directions, the first channel steel and the mutually close side wall of the second channel steel offer one
The fixed card slot in the shape of a " convex " to groove profile, bottom plate is connected between a pair of of fixed card slot of lower section, and a pair of top is solid
Determine to be connected with upper mounted plate between card slot, multiple groups damping device is equipped between the bottom plate and upper mounted plate, and multiple groups subtract
Shake device along bottom plate the evenly distributed setting of length direction, the damping device include bottom plate, damping sleeve, interior slide bar,
Damping spring and top plate, bottom plate are fixedly connected by bolt with the upper surface of bottom plate, and the upper surface of bottom plate is welded with damping
Sleeve, the middle part cooperation of damping sleeve are inserted with interior slide bar, and the upper end of interior slide bar is welded with top plate, and the outer cover of damping sleeve is equipped with
Damping spring, the upper surface of damping spring connecting bottom board and the lower surface of top plate, and top plate is close to the lower surface of upper mounted plate；
First channel steel and the mutually close one side upper end of the second channel steel offer strip fixing groove, and two strip fixing grooves
Between be connected with rubber sealing plate, the bottom plate, upper mounted plate both sides of the edge hot-roll forming have fixation in the shape of a " convex "
Card end, and bottom plate, the fixing card end of upper mounted plate two sides and fixed card slot cooperation card are set, the fixed card slot side wall bonding
There is yielding rubber item, yielding rubber item and fixing card end are in close contact, and the rubber sealing plate is by hot melt molding outside steel screen layer
Have a rubber layer composition, the two sides of rubber sealing plate are equipped with strip, and the strip of rubber sealing plate two sides respectively with two strip fixing grooves
Cooperation card is set, and the inside of the two sides of the rubber sealing plate and the first channel steel, the second channel steel is in close contact, and the upper table of rubber sealing plate
Face is flushed with the upper surface of the first channel steel, the second channel steel；
First channel steel, the second channel steel lateral wall be welded with multiple evenly distributed sleeves, multiple sleeves are parallel in two
In the linear of two channel steel length directions, the both ends of anchor bar are symmetrically plugged in each pair of sleeve, the sleeve pair by grafting
In be adjacent perhaps in two sleeves of constant spacing and two sets are horizontally arranged, vertical arrangement or oblique arrangement, and it is multipair
Anchor bar on sleeve can mutually intert, the first channel steel, the second channel steel lateral wall lower edges integrally formed with baffle.
Sleeve quantity described in the every side of channel steel is 2*10.
First channel steel, the second channel steel lateral wall be welded with multipair sleeve, anchor bar is in U-typed reinforcing bar, anchoring
The both ends of reinforcing bar are symmetrically plugged in each pair of sleeve, and the both ends of anchor bar and sleeve are by being welded and fixed.
Technical effect and advantage of the invention:
1, the present invention passes through the side for the fixed card slot for being opened up bottom plate, upper mounted plate along the first channel steel, the second channel steel
It slides into, installation is simple, effectively improves construction efficiency, the first channel steel and the second channel steel are connected by bottom plate, upper mounted plate
It connects, strengthens the structural stability of the first channel steel and the second channel steel；
2, the present invention is equipped with multiple groups damping device between bottom plate and upper mounted plate, effectively buffers upper mounted plate Bending Deformation
Shi Zaocheng vibration.
3, by two channel steel extending directions unilateral side selectivity installation anchor bar or vacant processing is done to sleeve,
The compound use as expanded joint structure and bridge plate guardrail then may be implemented；
4, by two rows of sleeve settings disposed in parallel, so that carrying out different densities and shape according to bridge load strength grade
Anchor bar layout and facilitate the expansion joint of different number carry out left and right and up and down combination.
Detailed description of the invention
Fig. 1 is the perspective view of the explosion of structure of the invention.
Fig. 2 is the combination diagram of structure of the invention.
Fig. 3 is the schematic diagram of structure of the invention.
Fig. 4 is the diagrammatic cross-section of structure of the invention.
Fig. 5 is the enlarged drawing in Fig. 4 at A.
In figure: 1, expansion joint channel steel group；101, the first channel steel；102, the second channel steel；2, bottom plate；21, upper mounted plate；
3, fixed card slot；4, fixing card end；5, yielding rubber item；6, damping device；7, rubber sealing plate；71, strip；8, strip is fixed
Slot；9, sleeve；10, anchor bar；11, baffle；12, bottom plate；13, damping sleeve；14, interior slide bar；15, damping spring；16, it pushes up
Plate.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of shock-absorbing type bridge expanssion joint composite constructions as shown in Figs. 1-5, including expansion joint channel steel
Group 1, bottom plate 2 and damping device 6, it is characterised in that: the expansion joint channel steel group 1 includes symmetrically arranged first channel steel
101 and second channel steel 102, the bottom plate that the ipsilateral bottom end of the first channel steel 101 and the second channel steel 102 passes through more evenly distributed settings
12 are welded and fixed, and for insole board 12 perpendicular to two channel steel length extending directions, the first channel steel 101 and the second channel steel 102 are mutually close
Side wall offer a pair of of groove profile fixed card slot 3 in the shape of a " convex ", be connected between a pair of of fixed card slot 3 of lower section lower solid
Fixed board 2 is connected with upper mounted plate 21 between a pair of of fixed card slot 3 of top, sets between the bottom plate 2 and upper mounted plate 21
There is multiple groups damping device 6, and multiple groups damping device 6 is along the evenly distributed setting of length direction of bottom plate 2, the damping device
6 include bottom plate 12, damping sleeve 13, interior slide bar 14, damping spring 15 and top plate 16, and bottom plate 12 passes through bolt and bottom plate 2
Upper surface be fixedly connected, the upper surface of bottom plate 12 is welded with damping sleeve 13, and cooperation is inserted with interior cunning in the middle part of damping sleeve 13
Bar 14, the upper end of interior slide bar 14 are welded with top plate 16, and the outer cover of damping sleeve 13 is equipped with damping spring 15, and damping spring 15 connects
The upper surface of bottom plate 12 and the lower surface of top plate 16 are connect, and top plate 16 is close to the lower surface of upper mounted plate 21；
The first channel steel 101 one side upper end mutually close with the second channel steel 102 offers strip fixing groove 8, and two cards
Be connected with rubber sealing plate 7 between fixing groove 8, the bottom plate 2, upper mounted plate 21 both sides of the edge hot-roll forming have and be in
The fixing card end 4 of "convex" shaped, and fixing card end 4 and the cooperation card of fixed card slot 3 of bottom plate 2,21 two sides of upper mounted plate are set,
3 side wall of fixed card slot is bonded with yielding rubber item 5, and yielding rubber item 5 and fixing card end 4 are in close contact, the rubber envelope
Plate 7 has rubber layer to constitute by hot melt molding outside steel screen layer, and the two sides of rubber sealing plate 7 are equipped with strip 71, and 7 liang of rubber sealing plate
The strip 71 of side is set with two cooperation cards of strip fixing groove 8 respectively, the two sides of the rubber sealing plate 7 and the first channel steel 101, second
The inside of channel steel 102 is in close contact, and the upper surface of rubber sealing plate 7 and the upper surface of the first channel steel 101, the second channel steel 102 are neat
It is flat；
First channel steel 101, the second channel steel 102 lateral wall be welded with multiple evenly distributed sleeves 9, multiple sleeves are in two
Item is parallel to the linear of two channel steel length directions, and the both ends of anchor bar 10 are symmetrically plugged in each pair of sleeve 9, this is by grafting
Sleeve centering be adjacent perhaps in two sleeves 9 of constant spacing and two sets 9 for horizontally arranged, vertical arrangement or tilts
Arrangement, and the anchor bar 10 on multipair sleeve 9 can mutually intert, the first channel steel 101,102 lateral wall of the second channel steel up and down
Edge is integrally formed with baffle 11.9 quantity of sleeve described in the every side of channel steel is 2*10.
First channel steel 101, the second channel steel 102 lateral wall be welded with multipair sleeve 9, anchor bar 10 is in U-typed
Reinforcing bar, the both ends of anchor bar 10 are symmetrically plugged in each pair of sleeve 9, and the both ends of anchor bar 10 and sleeve 9 pass through welding
It is fixed.
Wherein bottom plate 2, the fixing card end 4 of 21 two sides of upper mounted plate and the cooperation of fixed card slot 3, which block, sets, bottom plate 2,
The side for the fixed card slot 3 that upper mounted plate 21 is opened up along the first channel steel 101, the second channel steel 102 slides into, and installation is simple, effectively
It improves construction efficiency, the first channel steel 101 and the second channel steel 102 to be attached by bottom plate 2, upper mounted plate 21, strengthen
The structural stability of first channel steel 101 and the second channel steel 102,3 side wall of fixed card slot are bonded with yielding rubber item 5, yielding rubber
Item 5 and fixing card end 4 are in close contact, when gap changes between the first channel steel 101, the second channel steel 102, yielding rubber item
5 prevent hard collision between 3 side wall of fixing card end 4 and fixed card slot, effectively to the side wall at fixing card end 4 and fixed card slot 3 into
Row protection, avoids wearing.
Referring to figure 1 and figure 5, multiple groups damping device 6 is equipped between bottom plate 2 and upper mounted plate 21, and multiple groups subtract
Shake device 6 along bottom plate 2 the evenly distributed setting of length direction, damping device 6 specifically include bottom plate 12, damping sleeve 13,
Interior slide bar 14, damping spring 15 and top plate 16, bottom plate 12 are fixedly connected by bolt with the upper surface of bottom plate 2, bottom plate 12
Upper surface be welded with damping sleeve 13, cooperation is inserted with interior slide bar 14, the upper end welding of interior slide bar 14 in the middle part of damping sleeve 13
There is top plate 16, the outer cover of damping sleeve 13 is equipped with damping spring 15, the upper surface of 15 connecting bottom board 12 of damping spring and top plate
16 lower surface, under the action of damping spring 15, top plate 16 is close to the lower surface of upper mounted plate 21, effectively buffering upper mounted plate
It causes to shake when 21 Bending Deformation.
In conjunction with shown in Fig. 1 and Fig. 4, the first channel steel 101 one side upper end mutually close with the second channel steel 102 offers strip
Fixing groove 8, and rubber sealing plate 7 is connected between two strip fixing grooves 8, rubber sealing plate 7 is by hot melt outside multilayer steel screen layer
Rubber layer composition is formed, had not only guaranteed the wear-resistant strength of rubber sealing plate 7, but also there is good elasticity, the two sides of rubber sealing plate 7 are set
There is strip 71, and the strip 71 of 7 two sides of rubber sealing plate is set with two cooperation cards of strip fixing groove 8 respectively, the two sides of rubber sealing plate 7
It is in close contact with the inside of the first channel steel 101, the second channel steel 102, prevents sundries from falling, and the upper surface of rubber sealing plate 7 and the
One channel steel 101, the second channel steel 102 upper surface flush, guarantee planarization.
In conjunction with shown in Fig. 1 and Fig. 4, the first channel steel 101, the second channel steel 102 lateral wall optionally welded by sleeve 9
It is connected to multiple evenly distributed anchor bars 10, one of specific welding method are as follows: the first channel steel 101, the second channel steel 102
Lateral wall is welded with multipair sleeve 9, and anchor bar 10 is in U-typed reinforcing bar, and the both ends of anchor bar 10 are symmetrically plugged in each pair of set
In cylinder 9, and the both ends of anchor bar 10 and sleeve 9 ensure that the progress accurate contraposition of anchor bar 10 by being welded and fixed, and
Anchor bar 10 is facilitated to carry out wanting to be welded and fixed with the first channel steel 101, the second channel steel 102, due to the first channel steel 101, the second slot
102 liang of steel outside also needs to carry out casting concrete layer, in order to avoid rainwater is directly along concrete layer and the first channel steel 101, the
The gap of two channel steels, 102 lateral wall into corrode anchor bar 10, need the first channel steel 101,102 lateral wall of the second channel steel it is upper
Lower edge is integrally formed with baffle 11.Furthermore in the Bridge Design of different brackets intensity, optionally in two rows of sleeves 9
In different spacing two sleeves as a pair of, then a U-shaped anchor bar 10 is plugged in two sleeves 9 of this pair
On, decussation type setting can also be carried out, also can choose the sparse setting of big spacing.Furthermore connect in multiple expanded joint structures
Two sleeves of the side in the expanded joint structure closed on can be corresponded and be connected by anchor bar 10 by the used time.
Furthermore on as bridge guardrail in use, can only will be unilateral, i.e., only by the U-shaped anchor of the sleeve 9 of one of channel steel side
Gu reinforcing bar 10 carries out grafting welding, and the other side is vacant as whole, then using vacant sleeve side as bottom, there is U-shaped anchor
Gu the side of reinforcing bar 10 is as guardrail body and then joints cement.
Before expanded joint structure installation, first by bottom plate 2, upper mounted plate 21 along the first channel steel 101, the second channel steel 102
The side of the fixed card slot 3 opened up slides into, and installation is simple, effectively improves construction efficiency, the first channel steel 101 and the second channel steel
102 are attached by bottom plate 2, upper mounted plate 21, strengthen the stable structure of the first channel steel 101 and the second channel steel 102
Property, anchor bar 10 set by 102 liang of the first channel steel 101, the second channel steel outsides and the embedded bar of bridge floor are welded and fixed, then
First channel steel 101 and 102 two sides of the second channel steel are carried out to pour the concrete layer being flush, bottom plate 2 and upper mounted plate 21
Between be equipped with multiple groups damping device 6, effectively buffer 21 Bending Deformation of upper mounted plate when cause to shake.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (3)
1. a kind of shock-absorbing type bridge expanssion joint composite construction, including expansion joint channel steel group (1), bottom plate (2) and damping device
(6), it is characterised in that: the expansion joint channel steel group (1) includes symmetrically arranged first channel steel (101) and the second channel steel (102),
The ipsilateral bottom end of first channel steel (101) and the second channel steel (102) is welded and fixed by the bottom plate (12) of more evenly distributed settings,
Its insole board (12) is perpendicular to two channel steel length extending directions, the first channel steel (101) side wall mutually close with the second channel steel (102)
A pair of of groove profile fixed card slot in the shape of a " convex " (3) is offered, is connected with lower fixation between a pair of of fixed card slot (3) of lower section
Plate (2) is connected with upper mounted plate (21) between a pair of of fixed card slot (3) of top, the bottom plate (2) and upper mounted plate
(21) multiple groups damping device (6) are equipped between, and multiple groups damping device (6) is evenly distributed along the length direction of bottom plate (2)
Setting, the damping device (6) includes bottom plate (12), damping sleeve (13), interior slide bar (14), damping spring (15) and top plate
(16), bottom plate (12) is fixedly connected by bolt with the upper surface of bottom plate (2), and the upper surface of bottom plate (12) is welded with damping
Sleeve (13), the cooperation of damping sleeve (13) middle part are inserted with interior slide bar (14), and the upper end of interior slide bar (14) is welded with top plate (16).
The outer cover of damping sleeve (13) is equipped with damping spring (15), the upper surface of damping spring (15) connecting bottom board (12) and top plate
(16) lower surface, and top plate (16) is close to the lower surface of upper mounted plate (21)；
First channel steel (101) the one side upper end mutually close with the second channel steel (102) offers strip fixing groove (8), and
Be connected with rubber sealing plate (7) between two strip fixing grooves (8), the bottom plate (2), upper mounted plate (21) both sides of the edge
Hot-roll forming has a fixing card end (4) in the shape of a " convex ", and lower plate (2), the fixing card end (4) of upper mounted plate (2) two sides and solid
Determine card slot (3) cooperation card to set, fixed card slot (3) side wall is bonded with yielding rubber item (5), buffer bar (5) and fixing card end
(4) it being in close contact, the rubber sealing plate (7) has rubber layer to constitute by hot melt molding outside steel screen layer, and the two of rubber sealing plate (7)
Side is equipped with strip (71), and the strip (71) of rubber sealing plate (7) two sides is set with two strip fixing groove (28) cooperation cards respectively, institute
The inside of the two sides and the first channel steel (101), the second channel steel (102) of stating rubber sealing plate (7) is in close contact, and rubber sealing plate (7)
Upper surface flushed with the upper surface of the first channel steel (101), the second channel steel (102)；
First channel steel (101), the second channel steel (102) lateral wall be welded with multiple evenly distributed sleeves (9), Duo Getao
Cylinder is parallel to the linear of two channel steel length directions in two, and the both ends of anchor bar (10) are symmetrically plugged in each pair of sleeve (9)
In, which is adjacent or two sleeves (9) in constant spacing, and two sets (9) are horizontally arranged, vertical
In line column or oblique arrangement, and the anchor bar (10) on multipair sleeve (9) can mutually intert, the first channel steel (101), second
The lower edges of channel steel (102) lateral wall are integrally formed with baffle (11).
2. a kind of shock-absorbing type bridge expanssion joint composite construction according to claim 1, it is characterised in that: described in the every side of channel steel
Sleeve (19) quantity be 2*10.
3. a kind of shock-absorbing type bridge expanssion joint composite construction according to claim 1, it is characterised in that: the anchor bar
It (10) is in U-typed reinforcing bar, the both ends of anchor bar (10) are symmetrically plugged in each pair of sleeve (9), and the two of anchor bar (10)
End is fixed by being welded and fixed with sleeve (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910821260.8A CN110485287B (en) | 2019-09-02 | 2019-09-02 | Shock-proof type bridge expansion joint structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910821260.8A CN110485287B (en) | 2019-09-02 | 2019-09-02 | Shock-proof type bridge expansion joint structure |
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| CN110485287A true CN110485287A (en) | 2019-11-22 |
| CN110485287B CN110485287B (en) | 2020-12-08 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111705572A (en) * | 2020-07-02 | 2020-09-25 | 杭州很美网络科技有限公司 | Combined construction structure of underground road and ground bridge |
| CN111827106A (en) * | 2020-08-04 | 2020-10-27 | 赵亚蕊 | Anti-resonance device for steel-concrete composite bridge |
| CN111851281A (en) * | 2020-08-04 | 2020-10-30 | 赵亚蕊 | Working method of anti-resonance device for steel-concrete composite bridge |
| CN111877070A (en) * | 2020-06-16 | 2020-11-03 | 中交第三公路工程局有限公司 | Construction method of foamed light soil |
| CN112177179A (en) * | 2020-10-03 | 2021-01-05 | 中交四公局建筑工程有限公司 | Large integral underground space structure shrinkage crack control device and control method |
| CN113136796A (en) * | 2021-04-30 | 2021-07-20 | 重庆交通大学 | Reset type bridge expansion joint device |
| CN113186814A (en) * | 2021-04-25 | 2021-07-30 | 广州市市政工程设计研究总院有限公司 | Bridge damping expansion joint structure and construction method thereof |
| CN114908635A (en) * | 2022-05-26 | 2022-08-16 | 中冶南方城市建设工程技术有限公司 | Quick-replaceable combined type pavement expansion joint shock absorption self-adjusting system |
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| CN111705572A (en) * | 2020-07-02 | 2020-09-25 | 杭州很美网络科技有限公司 | Combined construction structure of underground road and ground bridge |
| CN111827106A (en) * | 2020-08-04 | 2020-10-27 | 赵亚蕊 | Anti-resonance device for steel-concrete composite bridge |
| CN111851281A (en) * | 2020-08-04 | 2020-10-30 | 赵亚蕊 | Working method of anti-resonance device for steel-concrete composite bridge |
| CN112177179A (en) * | 2020-10-03 | 2021-01-05 | 中交四公局建筑工程有限公司 | Large integral underground space structure shrinkage crack control device and control method |
| CN112177179B (en) * | 2020-10-03 | 2021-09-24 | 中交四公局建筑工程有限公司 | Large integral underground space structure shrinkage crack control device and control method |
| CN113186814A (en) * | 2021-04-25 | 2021-07-30 | 广州市市政工程设计研究总院有限公司 | Bridge damping expansion joint structure and construction method thereof |
| CN113136796A (en) * | 2021-04-30 | 2021-07-20 | 重庆交通大学 | Reset type bridge expansion joint device |
| CN113136796B (en) * | 2021-04-30 | 2022-07-19 | 重庆交通大学 | Reset type bridge expansion joint device |
| CN114908635A (en) * | 2022-05-26 | 2022-08-16 | 中冶南方城市建设工程技术有限公司 | Quick-replaceable combined type pavement expansion joint shock absorption self-adjusting system |
| CN114908635B (en) * | 2022-05-26 | 2023-12-05 | 中冶南方城市建设工程技术有限公司 | Quick-replaceable composite road expansion joint shock absorption self-adjusting system |
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