CN201610521U - Large-displacement bridge-type steel expansion device - Google Patents
Large-displacement bridge-type steel expansion device Download PDFInfo
- Publication number
- CN201610521U CN201610521U CN2009203160276U CN200920316027U CN201610521U CN 201610521 U CN201610521 U CN 201610521U CN 2009203160276 U CN2009203160276 U CN 2009203160276U CN 200920316027 U CN200920316027 U CN 200920316027U CN 201610521 U CN201610521 U CN 201610521U
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- crossbeam
- central sill
- side bar
- stretching device
- spring
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Abstract
The utility model discloses a large-displacement bridge-type steel expansion device, which can effectively control the uniformity of expansion joints. The large-displacement bridge-type steel expansion device comprises edge beams positioned at two sides of a beam body and middle beams positioned between the edge beams at the two sides; the edge beams and the middle beams are distributed along with the longitudinal direction of the beam body; cross beams distributed transversely along with the beam bodies are arranged below the edge beams and the middle beams; and elastic shearing force buffering elements are uniformly arranged below various middle beams between the two cross beams. As the elastic shearing force buffering elements are uniformly arranged below various middle beams, the distributing distance between the two adjacent elastic shearing force buffering elements is less, the distributing mode reduces the effect of the elastic shearing force buffering element to the torques of the middle beams to be minimum; when the bridge is expanded, the stressing of the elastic shearing force buffering elements is consistent, the middle beams are pushed to move uniformly to lead the joint width to be consistent; and simultaneously, the large-displacement bridge-type steel expansion device also can play a role of reducing partial noise, and is especially suitable for being promoted and used in the large-displacement bridge expansion devices.
Description
Technical field
The utility model relates to the bridge stretching structure, is specifically related to a kind of big displacement quantity bridge shaped steel stretching device.
Background technology
At present, existing big displacement quantity bridge modulus formula shaped steel expansion gap device generally has two kinds of form of structure, and a kind of is the grid type of multi-support crossbeam, and another kind is single bearing cross beam type.By its displacement control mode, what representative was abroad arranged is the oblique bearing cross beam control mode that Germany's hair is reined in, the shear spring control mode of Switzerland; Domestic have a link type control mode, and the chain-type control mode is arranged, and the mode of arranging shear spring in beam supporting carriage both sides is also arranged.These big displacement quantity expansion gap devices respectively have advantage, and their various design defect are also arranged.A), the shortcoming of the stretching device of oblique bearing cross beam control displacement: because the displacement of oblique bearing cross beam displacement control stretching device, mainly be that the crossbeam that relies on the rotation that the sliding bearing of rib is arranged on the crossbeam to promote at least two different angles moves and realizes, its slide plane wearing and tearing are bigger, the rubber bearing load is also very big, its supporting does not have long-acting Lubrication Design yet, and easier generation damages when particularly using on floating bridges such as suspension bridge or cable stayed bridge.B), external expansion gap device by shear spring control displacement, because the distance of the lateral arrangement between its displacement control module under central sill is far away, when spring produces shear displacemant, to produce bigger torsional interaction to central sill, structural strength requirement to central sill is very high, therefore causes stretching device to stitch wide uneven phenomenon easily.C), domestic link type displacement control mode and chain-type displacement control mode all be the mechanical control method of rigidity, though can temporarily make stretching device stitch wide uniformity, anti-vehicular impact power poor performance very easily produces fatigue fracture.D) though, the domestic stretching device that the has form of arranging the shear spring structure in beam supporting carriage both sides directly do not produce torsional interaction to central sill during in displacement, but it still has a lot of design defect that influence functional performance and application life: its displacement system and supporting system are overall structures, and the maintenance that stretching device may carry out after using for many years after the assembling of factory reaches is very inconvenient; Rubber pressure-bearing supporting is owing to be subjected to the restriction of stretching device structure space, and its lifting surface area is less, and bearing capacity is low, be difficult to stand for a long time vehicle by the time to the percussion of supporting; Its rubber side bar supporting corner is little, and the three-D displacement that can not adapt to bridge changes; The rib of rubber bearing makes the crossbeam can not lateral displacement, thereby makes whole stretching device can not adapt to the lateral displacement of bridge; Therefore this form of structure not too is fit to the floating bridges of large-scale steel structure such as suspension cable steel bridge, suspension cable steel bridge.E), the supported box structure of existing big displacement quantity modulus formula shaped steel stretching device all is the single-sided welding of non-penetration, periphery does not have strengthening measure yet.Particularly the base plate of supported box is whole stretching device the most concentrated stressed place, and stretching device has carelessness will cause the early stage damage of stretching device when mounted slightly.Show that through investigation the source of damage of big displacement quantity stretching device more than 70% is to cause the supported box base plate to come off because of the concrete pouring leakiness of stretching device supported box bottom to cause.E), existing big displacement stretching device do not have the wide flexible stopping means of maximum seam, stretching device is using back for many years or may make the wide threshold limit value that surpasses of certain group seam because of the performance of sliding material descends, the shock loading that shaped steel bears vehicle will be multiplied.
The utility model content
The technical problem that the utility model solved provides a kind ofly can effectively control shrinkage joint inhomogeneity big displacement quantity bridge shaped steel stretching device.
The technical scheme that its technical problem that solves the utility model adopts is: big displacement quantity bridge shaped steel stretching device, comprise side bar and the central sill between the side bar of both sides in beam body both sides, side bar and central sill are vertically arranged along the beam body, below side bar and central sill, be provided with along the crossbeam of beam body lateral arrangement, below each the root central sill between two crossbeams, be provided with the elastic shear force buffer element.
Further be that the elastic shear force buffer element between two crossbeams forms square waveform in the horizontal and arranges.
Further be that described elastic shear force buffer element adopts the composite material of metal and high-damping rubber to make.
Further be, be set with spring box below side bar, be fixedly connected with spring support below each central sill, the elastic shear force buffer element is arranged in spring box and the spring support.
Further be, be set with supported box on the side bar, be fixedly connected with supporting frame below each central sill, the crossbeam movable set is in supported box and supporting frame.
Further be, be provided with the side bar sliding spring between the upper surface of supported box and crossbeam, be provided with the spherical sliding bearing of side bar between the soffit of supported box and crossbeam, the side bar sliding spring is pressed on crossbeam on the spherical sliding bearing of side bar; Be provided with the central sill sliding bearing between the upper surface of supporting frame and crossbeam, be provided with the central sill sliding spring between the soffit of supporting frame and crossbeam, the central sill sliding spring is pressed on crossbeam on the central sill sliding bearing; Between the side of supporting frame and crossbeam, be provided with slide block.
Further be, be provided with long-acting lubricated oil storage blind hole between side bar sliding spring and the crossbeam and between central sill sliding spring and the crossbeam, between spherical sliding bearing of side bar and crossbeam and be provided with long-acting lubricated oil storage tank between central sill sliding bearing and the crossbeam.
Further be to be provided with the wide flexible stopping means of maximum seam between supported box and the supporting frame and between two adjacent supporting frames.
Further be on supported box, to be welded with the reinforcement steel plate.
Further be to be provided with sealing joint strip between side bar and the central sill and between adjacent two central sills.
The beneficial effects of the utility model are: arrange owing to be provided with the elastic shear force buffer element and form square waveform below each root central sill, therefore, in the horizontal distance is very little between adjacent two elastic shear force buffer elements, this arrangement makes the elastic shear force buffer element reduce to minimum to the torsional interaction of central sill, when bridge is flexible, the stressed unanimity of elastic shear force buffer element promotes central sill and evenly moves, and makes wide being consistent of seam; Simultaneously, the elastic shear force buffer element that each root central sill below is provided with adopts metal-high-damping rubber composite material to be made because be, and the velocity of sound of rubber only is 1/25th of a metal material, therefore can also play the function that reduces the part noise, be particluarly suitable for promoting the use of in the bridge extension joint of big displacement quantity.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the revolved sectional view of A-A direction among Fig. 1;
Fig. 3 is the sectional view of F-F direction among Fig. 2;
Fig. 4 is the sectional view of B-B direction among Fig. 2;
Fig. 5 is the sectional view of C-C direction among Fig. 2;
Fig. 6 is the sectional view of D-D direction among Fig. 1;
Fig. 7 is the sectional view of E-E direction among Fig. 1.
Be labeled as among the figure: side bar 1, central sill 2, crossbeam 3, elastic shear force buffer element 4, spring box 5, spring support 6, supported box 7, supporting frame 8, side bar sliding spring 9, the spherical sliding bearing 10 of side bar, central sill sliding spring 11, central sill sliding bearing 12, slide block 13, long-acting lubricated oil storage blind hole 14, long-acting lubricated oil storage tank 15, the wide flexible stopping means 16 of maximum seam, reinforcement steel plate 17, sealing joint strip 18, anchoring piece 19.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Extremely shown in Figure 7 as Fig. 1, big displacement quantity bridge shaped steel stretching device of the present utility model, comprise side bar 1 and the central sill between both sides side bar 12 in beam body both sides, side bar 1 is vertically arranged along the beam body with central sill 2, below side bar 1 and central sill 2, be provided with, below each the root central sill 2 between two crossbeams 3, be provided with elastic shear force buffer element 4 along the crossbeam 3 of beam body lateral arrangement.Owing to below each root central sill 2, be provided with elastic shear force buffer element 4, make between adjacent two elastic shear force buffer elements 4 distance in the horizontal very little, this arrangement makes the torsional interaction of 4 pairs of central sills 2 of elastic shear force buffer element reduce to minimum, when bridge is flexible, elastic shear force buffer element 4 stressed unanimities, promote central sill 2 and evenly move, make wide being consistent of seam; Simultaneously, each root central sill 2 below is provided with elastic shear force buffer element 4, can also play the function that reduces the part noise.
In the above-described embodiment, be the better torsional interaction that reduces central sill 2, the elastic shear force buffer element 4 between two crossbeams 3 forms square waveform in the horizontal and arranges.Be the rectangular waveform of shape that a plurality of elastic shear force buffer elements 4 form in the horizontal, when bridge stretches, be more conducive to stitch wide uniformity, its shape as shown in Figure 1.This elastic shear force buffer element 4 can adopt making such as high damping elastic caoutchouc, polyurethane elastomer material, elastic shear force buffer element 4 preferably adopts the composite material of high-damping rubber and metal material to make, the composite material of high-damping rubber and metal material is the normal material that adopts in the prior art, repeats no more here.It has the shear strength height, and damping capacity is good, and low temperature resistant brittle behavior is good, the ageing resistace that rebound performance is good He good.For forming support protective effect to elastic shear force buffer element 4, below side bar 1, be set with spring box 5, below each central sill 2, be fixedly connected with spring support 6, elastic shear force buffer element 4 is arranged in spring box 5 and the spring support 6.
For forming support protective effect to crossbeam 3, be set with supported box 7 on the side bar 1, below each central sill 2, be fixedly connected with supporting frame 8, crossbeam 3 movable sets are in supported box 7 and supporting frame 8.When then bridge was flexible, crossbeam 3 moved in the supporting system that supported box 7 and supporting frame 8 form.
For reducing the frictional resistance of crossbeam 3 in supported box 7 and supporting frame 8, be provided with side bar sliding spring 9 between the upper surface of supported box 7 and crossbeam 3, be provided with the spherical sliding bearing 10 of side bar between the soffit of supported box 7 and crossbeam 3, side bar sliding spring 9 is pressed on crossbeam 3 on the spherical sliding bearing 10 of side bar; Be provided with central sill sliding bearing 12 between the upper surface of supporting frame 8 and crossbeam 3, be provided with central sill sliding spring 11 between the soffit of supporting frame 8 and crossbeam 3, central sill sliding spring 11 is pressed on crossbeam 3 on the central sill sliding bearing 12; Between the side of supporting frame 8 and crossbeam 3, be provided with slide block 13.By the supporting system that side bar sliding spring 9, the spherical sliding bearing 10 of side bar, central sill sliding spring 11, central sill sliding bearing 12, slide block 13 are formed crossbeam 3 is held tightly in supported box 7 and supporting frame 8, because crossbeam 3 is slidingly matched with each sliding part, can reduce the frictional resistance of bridge crossbeam 3 when flexible, can make capable of expansion and contractionly, more avoid crossbeam 3 to bear other additional load.Between the soffit of supported box 7 and crossbeam 3, be provided with the spherical sliding bearing 10 of side bar, can realize the three-dimensional motion of crossbeam 3, thereby adapt to the needs of bridge three-dimensional motion.
In the above-described embodiment, for improving the life-span of each sliding part, be provided with long-acting lubricated oil storage blind hole 14 between side bar sliding spring 9 and the crossbeam 3 and between central sill sliding spring 11 and the crossbeam 3, between spherical sliding bearing 10 of side bar and crossbeam 3 and be provided with long-acting lubricated oil storage tank 15 between central sill sliding bearing 12 and the crossbeam 3.The setting of long-acting lubricated oil storage blind hole 14 and long-acting lubricated oil storage tank 15 makes and lubricates oil storage supply slide plane automatically, realizes long-acting lubrication, can adapt to the needs that the bridge three-D displacement changes fully.Side bar sliding spring 9, the spherical sliding bearing 10 of side bar, central sill sliding spring 11, central sill sliding bearing 12, slide block 13 preferably adopt PA (nylon) self-lubricating material to make.
Though the elastic displacement control system of stretching device has guaranteed the displacement uniformity of stretching device, in order to guarantee the high-durability energy of stretching device, the maximal dilation slit between restriction side bar 1 and central sill 2 and adjacent two central sills 2.Be provided with the wide flexible stopping means 16 of maximum seam between supported box 7 and the supporting frame 8 and between two adjacent supporting frames 8.Length after then should flexibility stopping means 16 full extension is the maximal dilation slit between side bar 1 and central sill 2 and adjacent two central sills 2, prevents that indivedual slits that stretching device in use may occur are wide and causes vehicle being multiplied to the shock loading of shaped steel.
For improving the application life of supported box 7, on supported box 7, be welded with and strengthen steel plate 17.This reinforcement steel plate 17 can be strengthened the intensity of supported box 7, and supported box 7 is under the unsettled fully situation in bottom, and supported box also can normally use for a long time, has guaranteed the high useful life longevity energy of stretching device.
For preventing that dust, foreign material etc. from entering in the shrinkage joint of side bar shaped steel 1 and central sill shaped steel 2, is being provided with sealing joint strip 18 between side bar 1 and the central sill 2 and between adjacent two central sills 2.
Claims (9)
1. big displacement quantity bridge shaped steel stretching device, comprise the side bar (1) that is positioned at beam body both sides and be positioned at central sill (2) between the both sides side bar (1), side bar (1) is vertically arranged along the beam body with central sill (2), be provided with the crossbeam (3) along beam body lateral arrangement below side bar (1) and central sill (2), it is characterized in that: each root central sill (2) below between two crossbeams (3) is provided with elastic shear force buffer element (4).
2. big displacement quantity bridge shaped steel stretching device as claimed in claim 1 is characterized in that: the elastic shear force buffer element (4) between two crossbeams (3) forms square waveform in the horizontal and arranges.
3. big displacement quantity bridge shaped steel stretching device as claimed in claim 2, it is characterized in that: be set with spring box (5) in side bar (1) below, be fixedly connected with spring support (6) in each central sill (2) below, elastic shear force buffer element (4) is arranged in spring box (5) and the spring support (6).
4. according to any described big displacement quantity bridge of claim shaped steel stretching device in the claim 1 to 3, it is characterized in that: be set with supported box (7) on the side bar (1), be fixedly connected with supporting frame (8) in each central sill (2) below, crossbeam (3) movable set is in supported box (7) and supporting frame (8).
5. big displacement quantity bridge shaped steel stretching device as claimed in claim 4, it is characterized in that: be provided with side bar sliding spring (9) between the upper surface of supported box (7) and crossbeam (3), be provided with the spherical sliding bearing (10) of side bar between the soffit of supported box (7) and crossbeam (3), side bar sliding spring (9) is pressed on crossbeam (3) on the spherical sliding bearing of side bar (10); Be provided with central sill sliding bearing (12) between the upper surface of supporting frame (8) and crossbeam (3), be provided with central sill sliding spring (11) between the soffit of supporting frame (8) and crossbeam (3), central sill sliding spring (11) is pressed on crossbeam (3) on the central sill sliding bearing (12); Between the side of supporting frame (8) and crossbeam (3), be provided with slide block (13).
6. big displacement quantity bridge shaped steel stretching device as claimed in claim 5, it is characterized in that: be provided with long-acting lubricated oil storage blind hole (14) between side bar sliding spring (9) and the crossbeam (3) and between central sill sliding spring (11) and the crossbeam (3), between spherical sliding bearing (10) of side bar and crossbeam (3) and be provided with long-acting lubricated oil storage tank (15) between central sill sliding bearing (12) and the crossbeam (3).
7. big displacement quantity bridge shaped steel stretching device as claimed in claim 4 is characterized in that: be provided with maximum seam wide flexible stopping means (16) between supported box (7) and the supporting frame (8) and between adjacent two supporting frames (8).
8. big displacement quantity bridge shaped steel stretching device as claimed in claim 4 is characterized in that: be welded with on supported box (7) and strengthen steel plate (17).
9. big displacement quantity bridge shaped steel stretching device as claimed in claim 4 is characterized in that: be provided with sealing joint strip (18) between side bar (1) and the central sill (2) and between adjacent two central sills (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203160276U CN201610521U (en) | 2009-11-27 | 2009-11-27 | Large-displacement bridge-type steel expansion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203160276U CN201610521U (en) | 2009-11-27 | 2009-11-27 | Large-displacement bridge-type steel expansion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201610521U true CN201610521U (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203160276U Expired - Fee Related CN201610521U (en) | 2009-11-27 | 2009-11-27 | Large-displacement bridge-type steel expansion device |
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| CN (1) | CN201610521U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518037A (en) * | 2011-12-16 | 2012-06-27 | 成都市新筑路桥机械股份有限公司 | Expansion device for extra-large displacement bridge |
| CN102704390A (en) * | 2012-05-24 | 2012-10-03 | 成都市新筑路桥机械股份有限公司 | Special buried isolation expansion device for steel-concrete composite beam |
| CN103452041A (en) * | 2013-10-09 | 2013-12-18 | 湖南广和桥梁构件有限公司 | Large-displacement-amount modular pattern bridge expansion device of safe deposit box system |
| CN103590330A (en) * | 2013-11-25 | 2014-02-19 | 柳州东方工程橡胶制品有限公司 | Extra large displacement bridge retractable device of single supporting beams |
| CN103741594A (en) * | 2013-10-21 | 2014-04-23 | 单国珠 | ZEY-type large-stroke bridge expansion device |
| CN106120549A (en) * | 2016-07-22 | 2016-11-16 | 安徽尚德科技有限公司 | A kind of big displacement quantity equal distance deflection bridge extension joint |
| CN111119039A (en) * | 2019-12-31 | 2020-05-08 | 山西省交通新技术发展有限公司 | Displacement device for plate type expansion joint of highway bridge |
| CN112195771A (en) * | 2020-09-18 | 2021-01-08 | 中盛路桥科技有限公司 | Bridge expansion device |
| CN113186778A (en) * | 2021-05-07 | 2021-07-30 | 贵州省遵义公路管理局 | Road surface rainwater concealed type permeation structure and construction process |
-
2009
- 2009-11-27 CN CN2009203160276U patent/CN201610521U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102518037A (en) * | 2011-12-16 | 2012-06-27 | 成都市新筑路桥机械股份有限公司 | Expansion device for extra-large displacement bridge |
| CN102518037B (en) * | 2011-12-16 | 2014-02-12 | 成都市新筑路桥机械股份有限公司 | Expansion device for extra-large displacement bridge |
| CN102704390A (en) * | 2012-05-24 | 2012-10-03 | 成都市新筑路桥机械股份有限公司 | Special buried isolation expansion device for steel-concrete composite beam |
| CN103452041A (en) * | 2013-10-09 | 2013-12-18 | 湖南广和桥梁构件有限公司 | Large-displacement-amount modular pattern bridge expansion device of safe deposit box system |
| CN103741594A (en) * | 2013-10-21 | 2014-04-23 | 单国珠 | ZEY-type large-stroke bridge expansion device |
| CN103590330A (en) * | 2013-11-25 | 2014-02-19 | 柳州东方工程橡胶制品有限公司 | Extra large displacement bridge retractable device of single supporting beams |
| CN106120549A (en) * | 2016-07-22 | 2016-11-16 | 安徽尚德科技有限公司 | A kind of big displacement quantity equal distance deflection bridge extension joint |
| CN111119039A (en) * | 2019-12-31 | 2020-05-08 | 山西省交通新技术发展有限公司 | Displacement device for plate type expansion joint of highway bridge |
| CN112195771A (en) * | 2020-09-18 | 2021-01-08 | 中盛路桥科技有限公司 | Bridge expansion device |
| CN113186778A (en) * | 2021-05-07 | 2021-07-30 | 贵州省遵义公路管理局 | Road surface rainwater concealed type permeation structure and construction process |
| CN113186778B (en) * | 2021-05-07 | 2022-11-08 | 贵州省遵义公路管理局 | Road surface rainwater concealed type permeation structure and construction process |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101020 Termination date: 20131127 |