CN102518037B - Expansion device for extra-large displacement bridge - Google Patents
Expansion device for extra-large displacement bridge Download PDFInfo
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- CN102518037B CN102518037B CN201110422253.4A CN201110422253A CN102518037B CN 102518037 B CN102518037 B CN 102518037B CN 201110422253 A CN201110422253 A CN 201110422253A CN 102518037 B CN102518037 B CN 102518037B
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- 229920003225 polyurethane elastomer Polymers 0.000 claims description 11
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Abstract
The invention discloses an expansion device for an extra-large displacement bridge, which belongs to the technical field of highway bridges and comprises supporting systems and steel section components, which are mutually intersected. The supporting systems are transversely erected on two sides of a bridge in the lateral direction of the bridge. Limiting systems are disposed below the steel section components. Displacement control systems and anchorage systems are disposed on the steel section components. Each steel section component comprises a plurality of middle-beam steel sections. Each supporting system comprises a supporting suspension. The middle-beam steel sections are connected with the supporting suspensions through 30-degree wedged locking screw pairs or Tang's bolts. The expansion device is simple in structure, simple and convenient in operation, safe and reliable in use, low in cost, worthy of popularization, safe and reliable in bearing, uniform in displacement control, and high in travelling crane safety.
Description
Technical field
The present invention relates to a kind of Highway bridge technique field, particularly a kind of super large displacement bridge extension joint.
Background technology
In existing Expansion Units for Highway Bridges, large displacement modular expansion device has: the advantages such as supporting capacity is strong, anti-skidding, good water-proof effect, installation are simple, easy to maintenance extensive use in greatly across the suspension bridge in footpath, cable stayed bridge.Large displacement modular expansion device has three kinds of forms: lattice beam formula, rotary shaft and straight beam formula.
In three kinds of form of structure of large displacement modular expansion device, straight beam formula stretching device is a kind of preferably, and the large displacement stretching device of straight beam formula is by four large systems: supporting system, displacement system, anchor system, waterproofing system form.
Displacement control system and the supporting system of straight beam formula stretching device are separate, and displacement control system is comprised of rubber shear spring, spring coupling plate, spring anchorage bracket etc., and rubber shear spring connects in groups in the mode of series connection.Stretching device is realized the wide control of seam by the equivalent shear strain of rubber shear spring.
The large displacement stretching device of straight beam formula is in extensive use, because some following problems have also appearred in the other factorses such as overload of vehicle.
1, stretching device central sill fracture;
2, stretching device displacement control is inhomogeneous, stitches individually wide serious super wide;
When 3, vehicle is by stretching device, there is the car of jumping phenomenon;
When 4, vehicle is by stretching device, there is skidding;
5, width joint in stretching device left and right misplaces, leaks;
6, stretching device is the in the situation that of uninterrupted traffic, and part replacement is difficult.
Stretching device occurs that the reason of the above problem is as follows:
1, the reason of central sill fracture:
(1) compared with the past, overload of vehicle, hypervelocity phenomenon more and more serious, existing 80 * 120 central sill shaped steel has not been well positioned to meet the requirement of carrying.
(2) for arranging displacement control system, central sill boring is more, easily causes that stress is concentrated, thereby causes central sill fracture.
(3) elastomeric bearing, because the reason such as aging, tired is damaged, causes central sill to come to nothing, and supporting span becomes large, causes central sill fracture.
2, inhomogeneous reason is controlled in displacement:
(1) displacement control system arrangement is unreasonable, causes displacement control not enough, thereby causes displacement inhomogeneous.
(2) displacement control system traditional rubber shear spring shearing force used is not enough, can not overcome the frictional force of supporting system, easily causes shear transfer to be obstructed, thereby causes displacement control system to lose efficacy.
(3) traditional rubber shear spring, ageing-resistant poor with fatigue resistance, in the use procedure of stretching device, easily destroy, cause displacement to be controlled and lost efficacy.
(4) stretching device only arranges single displacement control system, and displacement insurance system is not set, and after the displacement control system arranging lost efficacy for a certain reason, central sill can not get constraint and controls, and causes respectively stitching wide inhomogeneous.
3, produce the reason of jumping car:
(1) supporting system bolt used is not taked locking measure, under the long-term percussion of car load, bolt is easy to loose or dislocation, after hanger bolt loose or dislocation, can lose the original pretightning force of elastomeric bearing, when vehicle passes through stretching device, can produce very large bounce, cause jumping the generation of car phenomenon.
(2) displacement system bolt used is not taked locking measure, under the long-term percussion of car load, bolt is easy to loose or dislocation, after T shape frame bolt looseness comes off, can cause displacement control system to lose efficacy, vehicle during by super wide seam wide (central sill gap is greater than 80mm), can cause jumping car.
4, the reason of vehicle slip:
Modular expansion device, rely on the gap between central sill, self there is excellent antiskid function, therefore traditional modular expansion device is not all taked extra non-skid feature, but for large displacement or super large displacement modular expansion device, only rely on central sill gap anti-skidding, skidproof effect is undesirable, under the bad weathers such as sleet, vehicle by time easily skid.
5, there is the reason of laterally sector deformed and vertical dislocation in stretching device:
Large span stayed-cable bridge based on floating system or the design of half floating system, suspension bridge are had relatively high expectations to horizontal, the vertical corner of stretching device, reach ± more than 0.025 radian, traditional large displacement modular expansion device is difficult to meet so high corner reciprocal requirement.Therefore to bridge wind-engaging, carry and wait that other factors generations are horizontal, after vertical displacement, stretching device is easy to occur permanent sector deformed and vertical dislocation.
6,, the in the situation that of uninterrupted traffic, fragile part is changed difficult reason:
Traditional modular expansion device has been ignored fragile part as replacing problems such as shear spring, elastomeric bearings in structure design, but after these damage of components, changes comparatively difficulty.
Above-described problem is all problem and the defect that large displacement modular expansion device exists, these problems and defect have a strong impact on safe operation and the traffic safety of bridge, if these problems and defect solve not in time, development and the application of large displacement modular expansion device will seriously be restricted.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, overcome in prior art large displacement modular expansion device and drive a vehicle that vehicle-mounted power is not enough, the deficiencies such as inhomogeneous are controlled in displacement, a kind of super large displacement modulus type road retractor device is provided, this stretching device bearing safety is reliable, displacement is controlled evenly, travel safety is high, and improve the anti-loosening property of whole stretching device structure, guarantee its Stability Analysis of Structures, safe and reliable.
The technical solution used in the present invention is as follows:
Super large displacement bridge extension joint of the present invention, it comprises supporting system and the shaped steel assembly that mutual square crossing is arranged, described supporting system is along the horizontal Liang Tishang that rides over bridge both sides of direction across bridge, the bottom of described shaped steel assembly is provided with caging system, on described shaped steel assembly, be provided with displacement control system and anchor system, described shaped steel assembly comprises some central sill shaped steel, described supporting system comprises supporting suspension bracket, and described central sill shaped steel connects or Tang Shi Bolt Connection by 30 ° of wedge shape checknut width between suspension bracket with supporting.
Owing to having adopted said structure, by supporting system and the shaped steel assembly of mutual arranged crosswise, supporting system is connected closely with shaped steel assembly, and its formed stretching device sound construction, reliably, guarantee its bearing safety, supporting system is along the horizontal beam body that rides over bridge both sides of direction across bridge, namely supporting system is across the Liang Tishang at bridge, play a supporting role, the bottom of assembly is provided with caging system, the displacement of restriction stretching device, thereby can control the displacement of bridge, displacement is controlled evenly, on shaped steel assembly, be provided with displacement control system and anchor system, thereby can control the displacement of stretching device, and assurance shaped steel assembly is fixing, thereby guarantee that bearing safety is reliable, displacement is controlled evenly, travel safety is high.Described shaped steel assembly comprises some central sill shaped steel, described supporting system comprises supporting suspension bracket, described central sill shaped steel connects or Tang Shi Bolt Connection by 30 ° of wedge shape checknut width between suspension bracket with supporting, improves the anti-loosening property of whole stretching device structure, guarantees its Stability Analysis of Structures, safe and reliable, super large displacement bridge extension joint of the present invention, simple in structure, easy and simple to handle, with low cost, utilization is worthy to be popularized.
Super large displacement bridge extension joint of the present invention, described supporting suspension bracket is shape of the mouth as one speaks integral seal structure, and supporting suspension bracket be placed on outside bearing cross beam, supporting suspension bracket side be provided with limit base.
Owing to having adopted said structure, described bearing cross beam is provided with several supporting suspension brackets between two supported boxs, described hanging holder set is shape of the mouth as one speaks integrally closed structure, its supporting capacity is provided when guaranteeing its sealing effectiveness, guarantee its application life, hanging holder set is set on bearing cross beam, between supporting suspension bracket and bearing cross beam, be provided with elastomeric bearing, the laterally disposed limited location seat of described supporting suspension bracket, described elastomeric bearing is also provided with suitable pretightning force, guaranteeing to compress supporting and pressure-bearing supports and can fit tightly with bearing cross beam, guarantee suspension bracket can be on bearing cross beam free parallel sliding, thereby make convenient to operation, safe and reliable.
Super large displacement bridge extension joint of the present invention, is provided with water-proof sealing rubber strip between two adjacent central sill shaped steel, and some groups of supporting systems are the spacing with 1.0m～1.6m along direction across bridge, the horizontal Liang Tishang that rides over bridge both sides.
Owing to having adopted said structure, shaped steel assembly is mainly formed side by side by some central sill shaped steel, guarantee carrying capacity, and be provided with water-proof sealing rubber strip between two adjacent central sill shaped steel, guarantee the sealing between each beam shaped steel, avoid the foreign material such as rainwater to enter in stretching device, to its corrosion, thereby guaranteed application life of stretching device.When heavy duty, high density particularly overload, exceed the speed limit the more traffic operating mode of car, central sill shaped steel under tradition support interval designs and can greatly shorten application life, the lost of life of supporting system namely, for guaranteeing stretching device load bearing system application life, increase the security system of product, adopted the novel large central sill shaped steel of up-to-date 90x130, and adopt some groups of supporting systems, guarantee supporting power, simultaneously, with central sill shaped steel, substitute traditional side bar steel, greatly strengthened the strength and stiffness of side bar.
Super large displacement bridge extension joint of the present invention, described supporting system comprises fixed end supported box, bearing cross beam, supporting suspension bracket, bearing cross beam assembly and movable end supported box, described fixed end supported box and movable end supported box are separately fixed at the Liang Tishang of bridge both sides, in two supported boxs, by bearing cross beam, connect, described bearing cross beam is set with bearing cross beam assembly and supporting suspension bracket outward, and described supporting system is fixedly connected with central sill shaped steel by bearing cross beam assembly.
Owing to having adopted said structure, the structure that can guarantee whole supporting system is surely leaned on, thereby guarantee that whole supporting system carrying capacity reaches instructions for use, and can reach the requirement of displacement, described bearing cross beam is set with bearing cross beam assembly and supporting suspension bracket outward, described supporting system is fixedly connected with central sill shaped steel by bearing cross beam assembly, thereby can guarantee to lean on being connected surely between supporting system and central sill shaped steel, namely guarantee to lean on being connected surely between supporting system and shaped steel assembly, thereby the structure that can guarantee whole stretching device is surely leaned on, carrying capacity is large, long service life, safe and reliable.
Super large displacement bridge extension joint of the present invention, one end of described bearing cross beam is fixed in fixed end supported box, the other end can relatively move by elastomeric bearing in movable end supported box, between described bearing cross beam and movable end supported box, be provided with elastomeric bearing, bearing cross beam and and fixed end supported box between be provided with spherical bearing and elastomeric bearing, between described supporting suspension bracket and bearing cross beam, be provided with elastomeric bearing.
Owing to having adopted said structure, one end of bearing cross beam is fixed in fixed end supported box, the other end can relatively move by elastomeric bearing in movable end supported box, thereby can meet the requirement of the stroke of stretching device, between bearing cross beam and movable end supported box, be provided with elastomeric bearing, bearing cross beam and and fixed end supported box between be provided with spherical bearing and elastomeric bearing, elastomeric bearing can play cushioning effect, there is good absorbing, supporting capacity, resistance to environmental aging and stress relaxation side, thereby make longer service life.The existence of spherical bearing, stretching device is well positioned to meet laterally, vertically drifting about and rotating requirement of bridge, has avoided the friction infringement of the movement of bearing cross beam to supported box, thereby can guarantee displacement control evenly, guarantees traffic safety.
Super large displacement bridge extension joint of the present invention, is provided with corrosion resistant plate on the outer wall of described bearing cross beam, and described spherical bearing and elastomeric bearing are provided with tetrafluoro slide plate with the junction of bearing cross beam, tetrafluoro slide plate and corrosion resistant plate laminating.
Owing to having adopted said structure, described spherical bearing and elastomeric bearing and crossbeam junction are provided with tetrafluoro slide plate, described elastomeric bearing is provided with suitable pretightning force, can guarantee that on the tetrafluoro slide plate of elastomeric bearing and spherical bearing and crossbeam, corrosion resistant plate fits tightly, guarantee that bearing cross beam can be along suitable bridge to being free to slide simultaneously, bearing safety is reliable, guarantees traffic safety.
Super large displacement bridge extension joint of the present invention, described caging system comprises spacing case, limiting plate, spacing band holder, spacing band and fixation clip, described spacing case is fixed on the central sill shaped steel of shaped steel assembly end, in described spacing case, be provided with limiting plate, and the bottom at central sill shaped steel is provided with fixation clip, described spacing band is fixed on limiting plate through fixation clip.
Owing to having adopted said structure, in central sill shaped steel bottom, caging system is set, and most importantly this caging system is cascaded all central sill shaped steel side by side by spacing band, thereby play spacing effect, adopt this caging system, can control the maximal dilation amount of stretching device, thereby guarantee it is use safe and reliable, increase its application life.
Super large displacement bridge extension joint of the present invention, described displacement control system comprises displacement case, polyurethane rubber spring, spring fixed seat and spring coupling plate, described moving on the central sill shaped steel that case is fixed on shaped steel assembly end, described spring coupling plate links together two adjacent central sill shaped steel by polyurethane rubber spring, described spring coupling plate middle part is fixedly connected with central sill shaped steel by spring fixed seat, and the quantity of polyurethane rubber spring increases to movable end successively from stretching device fixed end.
Owing to having adopted said structure, it is reliable, effective that stretching device displacement system is controlled, stitch wide good uniformity, displacement control system arrangement rationally, effectively, elastic displacement control element quantity increases to movable end successively from stretching device fixed end, in displacement control system, core parts-shear spring has adopted polyurethane rubber shear spring, adopts polyurethane to replace General Purpose Rubber, and front shear force increases, endurance type is strong.Adopted stopping means, dual fail-safe effect is controlled in displacement, guarantees that travel safety is high.
Super large displacement bridge extension joint of the present invention, described elastomeric bearing adopts polyurethane to make.
Owing to having adopted said structure, elastomeric bearing has adopted polyurethane, has the superiority that General Purpose Rubber is difficult to reach, thereby make longer service life aspect absorbing, supporting capacity, resistance to environmental aging and stress relaxation.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
1. super large displacement bridge extension joint of the present invention, simple in structure, easy and simple to handle, safe and reliable, with low cost, and utilization is worthy to be popularized;
2. super large displacement bridge extension joint of the present invention, bearing safety is reliable, displacement is controlled evenly, and travel safety is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of super large displacement bridge extension joint of the present invention;
Fig. 2 is the structural representation of supporting system in the present invention;
Fig. 3 is the structural representation of caging system in the present invention;
The structural representation of Fig. 4 Shaped Steel assembly of the present invention;
The structural representation of displacement control system in Fig. 5 the present invention.
Mark in figure: 1-supporting system, 2-caging system, 3-shaped steel assembly, 4-displacement control system, 5-anchor system, 1-1-fixed end supported box, 1-2-supports suspension bracket, 1-3-bearing cross beam assembly, 1-4,1-5-elastomeric bearing, 1-6-spherical bearing, 1-7-movable end supported box, the spacing case of 2-1-, 2-2-limiting plate, the spacing band holder of 2-3-, the spacing band of 2-4-, 2-5-fixation clip, 3-1-central sill shaped steel, 3-2-water-proof sealing rubber strip, 4-1-displacement case, 4-2-polyurethane rubber spring, 4-3-spring fixed seat, 4-4-spring coupling plate.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figures 1 to 5, described big displacement quantity refers to the scope of displacement between 480m-1000m, and super large displacement refers to the scope of displacement more than 1000m.
Embodiment 1, super large displacement bridge extension joint of the present invention, it comprises the supporting system 1 and shaped steel assembly 3 that mutual square crossing is arranged, described supporting system 1 is some groups with shaped steel assembly 3, concrete quantity is for those skilled in the art are according to site operation and design selected, described supporting system 1 is along the horizontal Liang Tishang that rides over bridge both sides of direction across bridge, and the bottom of described shaped steel assembly 3 is provided with caging system 2, is provided with displacement control system 4 and anchor system 5 on described shaped steel assembly 3.Caging system 2 is combined with displacement control system 4 for controlling the displacement of stretching device, play dual fail-safe effect, thereby can guarantee the safe and reliable of use, anchor system 5 is for linking together each assembly, thereby form whole holding capacity structure, guarantee that its bearing capacity reaches requirement, thereby overcome deficiency of the prior art, described shaped steel assembly 3 comprises some central sill shaped steel 3-1, described supporting system 1 comprises supporting suspension bracket 1-2, between described central sill shaped steel 3-1 and supporting suspension bracket 1-2, pass through 30 ° of wedge shape anti-loosening threaded pairs or Tang Shi Bolt Connection, improve the anti-loosening property of whole stretching device structure.
Embodiment 3 is similar to embodiment 1, embodiment 2, its difference is: further described supporting system 1 is comprised to fixed end supported box 1-1, bearing cross beam, supporting suspension bracket 1-2, bearing cross beam assembly 1-3 and movable end supported box 1-7, described fixed end supported box 1-1 and movable end supported box 1-7 are separately fixed at the Liang Tishang of bridge both sides, in two supported boxs, by bearing cross beam, connect, described bearing cross beam is set with bearing cross beam assembly 1-3 and supporting suspension bracket 1-2 outward, and described supporting system 1 is fixedly connected with central sill shaped steel 3-1 by bearing cross beam assembly 1-3.Especially, one end of described bearing cross beam is fixed in fixed end supported box 1-1, the other end can relatively move by spherical bearing 1-6 in movable end supported box 1-7, between described bearing cross beam and movable end supported box 1-7, be provided with spherical bearing 1-6 and elastomeric bearing, between described supporting suspension bracket 1-2 and bearing cross beam, be provided with elastomeric bearing.Described supporting suspension bracket 1-2 is shape of the mouth as one speaks integral seal structure, and supporting suspension bracket 1-2 is placed on outside bearing cross beam, at the side of supporting suspension bracket 1-2, is provided with limit base.
Embodiment 4 and embodiment 1, embodiment 2, embodiment 3 are similar, its difference is: on the outer wall of described bearing cross beam, be provided with corrosion resistant plate, described spherical bearing 1-6 and elastomeric bearing are provided with tetrafluoro slide plate with the junction of bearing cross beam, tetrafluoro slide plate and corrosion resistant plate laminating.
Embodiment 5 and embodiment 1, embodiment 2, embodiment 3, embodiment 4 are similar, its difference is: described caging system 2 comprises spacing case 2-1, limiting plate 2-2, spacing band holder 2-3, spacing band 2-4 and fixation clip 2-5, described spacing case 2-1 is fixed on the central sill shaped steel 3-1 of shaped steel assembly 3 ends, in described spacing case 2-1, be provided with limiting plate 2-2, and the bottom at central sill shaped steel 3-1 is provided with fixation clip 2-5, described spacing band 2-4 is fixed on limiting plate 2-2 through fixation clip 2-5.
Embodiment 6 and embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5 is similar, its difference is: optimized further displacement control system 4, described displacement control system 4 comprises displacement case 4-1, polyurethane rubber spring 4-2, spring fixed seat 4-3 and spring coupling plate 4-4, described moving on the central sill shaped steel 3-1 that case 4-1 is fixed on shaped steel assembly 3 ends, described spring coupling plate 4-4 links together two adjacent central sill shaped steel 3-1 by polyurethane rubber spring 4-2, described spring coupling plate 4-4 middle part is fixedly connected with central sill shaped steel 3-1 by spring fixed seat 4-3.
In above-described embodiment, its elastomeric bearing all can adopt polyurethane to make.
Super large displacement bridge extension joint of the present invention, above-described embodiment can be implemented separately also can select as required to implement, can certainly be all in conjunction with implementing,
Super large displacement bridge extension joint of the present invention, simple in structure, easy and simple to handle, safe and reliable, with low cost, utilization is worthy to be popularized; Super large displacement bridge extension joint of the present invention, bearing safety is reliable, displacement is controlled evenly, and travel safety is high.
Super large displacement bridge extension joint of the present invention, its technical characterstic is as follows:
1, supporting capacity significantly improves, carrying safety and reliability.
(1) central sill shaped steel adopts 90 * 130 to replace existingly 80 * 120, and bearing capacity is stronger.
(2) T-shaped with being connected of central sill shaped steel, by original bolt, connect and change welding into, avoid central sill boring too much, cause the concentrated phenomenon of stress.
(3) elastomeric bearing has adopted polyurethane, aspect absorbing, supporting capacity, resistance to environmental aging and stress relaxation, has the superiority that General Purpose Rubber is difficult to reach.
(4) hanger bolt (being welded with wedge shape fast), T-shaped have been selected and have been adopted 30 ° of wedge shape checknut width or Tang Shi Bolt Connection, and anti-loosing effect is good.
(5) suspension bracket place has taked cross spacing to crossbeam, (traditional employing supporting is spacing).
2, the control of stretching device displacement system is reliable, effective, stitches wide good uniformity.
(1) displacement control system arrangement rationally, effectively, elastic displacement control element quantity increases to movable end successively from stretching device fixed end.
(2) in displacement control system, core parts-shear spring has adopted polyurethane rubber shear spring to adopt polyurethane to replace General Purpose Rubber, and front shear force increases, endurance type is strong.
(3) adopted stopping means, dual fail-safe effect is controlled in displacement.
3, can meet the demand of bridge lateral, vertical corner reciprocal completely.
(1) supported box place has adopted novel ball bearing, can the fine displacement requirement that meets bridge.
(2) elastic supporting element has adopted new polyurethane elastomeric bearing.
4, excellent skidproof effect:
(1) central sill shaped steel end face plane has anti-slip tank.
(2) compression apparatus upper surface is coated with special antiskid layer.
Stretching device upper surface is at ball blast---and after application, be coated with last layer epoxy resin, then spray one deck corundum sand mud, thereby greatly strengthen stretching device shaped steel skin-friction coefficient, further improve the anti-slide performance of device.
5, left and right width joint good water-proof effect.
Left and right width joint is provided with buttcover plate.
Super large displacement bridge extension joint of the present invention, the large displacement stretching device of straight beam formula arranges a suitable bridge to the crossbeam of arranging in each supported box, all central sills are all supported on same crossbeam, the two is square crossing each other, compact conformation, reduce to greatest extent displacement case and support box physical dimension, also reached the object that reduces stretching device overall weight.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a super large displacement bridge extension joint, comprise supporting system (1) and shaped steel assembly (3) that mutual square crossing is arranged, described supporting system (1) is along the horizontal Liang Tishang that rides over bridge both sides of direction across bridge, the bottom of described shaped steel assembly (3) is provided with caging system (2), on described shaped steel assembly (3), be provided with displacement control system (4) and anchor system (5), it is characterized in that: described shaped steel assembly (3) comprises some central sill shaped steel (3-1), described caging system (2) comprises spacing case (2-1), limiting plate (2-2), spacing band holder (2-3), spacing band (2-4) and fixation clip (2-5), described spacing case (2-1) is fixed on the central sill shaped steel (3-1) of shaped steel assembly (3) end, in described spacing case (2-1), be provided with limiting plate (2-2), and be provided with fixation clip (2-5) in the bottom of central sill shaped steel (3-1), described spacing band (2-4) is fixed on limiting plate (2-2) through fixation clip (2-5), between two adjacent central sill shaped steel (3-1), be provided with water-proof sealing rubber strip (3-2), and some groups of supporting systems (1) are the spacing with 1.0m～1.6m along direction across bridge, the horizontal Liang Tishang that rides over bridge both sides, described supporting system (1) comprises supporting suspension bracket (1-2), fixed end supported box (1-1), bearing cross beam, bearing cross beam assembly (1-3) and movable end supported box (1-7), described supporting suspension bracket (1-2) is shape of the mouth as one speaks integral seal structure, and supporting suspension bracket (1-2) is placed on outside bearing cross beam, side at supporting suspension bracket (1-2) is provided with limit base, described fixed end supported box (1-1) and movable end supported box (1-7) are separately fixed at the Liang Tishang of bridge both sides, in two supported boxs, by bearing cross beam, connect, described bearing cross beam is set with bearing cross beam assembly (1-3) and supporting suspension bracket (1-2) outward, described supporting system (1) is fixedly connected with central sill shaped steel (3-1) by bearing cross beam assembly (1-3), between described central sill shaped steel (3-1) and supporting suspension bracket (1-2), by 30 ° of wedge shape anti-loosening threaded pairs, connect or pass through Tang Shi Bolt Connection.
2. super large displacement bridge extension joint as claimed in claim 1, it is characterized in that: one end of described bearing cross beam is fixed in fixed end supported box (1-1), the other end can relatively move by elastomeric bearing (1-5) in movable end supported box (1-7), between described bearing cross beam and movable end supported box (1-7), be provided with elastomeric bearing (1-5), bearing cross beam and and fixed end supported box (1-1) between be provided with spherical bearing (1-6) and elastomeric bearing (1-5), between described supporting suspension bracket (1-2) and bearing cross beam, be provided with elastomeric bearing.
3. super large displacement bridge extension joint as claimed in claim 2, it is characterized in that: on the outer wall of described bearing cross beam, be provided with corrosion resistant plate, described spherical bearing (1-6) and elastomeric bearing are provided with tetrafluoro slide plate with the junction of bearing cross beam, tetrafluoro slide plate and corrosion resistant plate laminating.
4. super large displacement bridge extension joint as claimed any one in claims 1 to 3, it is characterized in that: described displacement control system (4) comprises displacement case (4-1), polyurethane rubber spring (4-2), spring fixed seat (4-3) and spring coupling plate (4-4), described moving on the central sill shaped steel (3-1) that case (4-1) is fixed on shaped steel assembly (3) end, described spring coupling plate (4-4) links together two adjacent central sill shaped steel (3-1) by polyurethane rubber spring (4-2), described spring coupling plate (4-4) middle part is fixedly connected with central sill shaped steel (3-1) by spring fixed seat (4-3), the quantity of polyurethane rubber spring (4-2) increases to movable end successively from stretching device fixed end.
5. super large displacement bridge extension joint as claimed in claim 2 or claim 3, is characterized in that: described elastomeric bearing adopts polyurethane to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110422253.4A CN102518037B (en) | 2011-12-16 | 2011-12-16 | Expansion device for extra-large displacement bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110422253.4A CN102518037B (en) | 2011-12-16 | 2011-12-16 | Expansion device for extra-large displacement bridge |
Publications (2)
| Publication Number | Publication Date |
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| CN102518037A CN102518037A (en) | 2012-06-27 |
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| 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 |
| CN107119558A (en) * | 2017-06-20 | 2017-09-01 | 浙江秦山橡胶工程股份有限公司 | A kind of bridge extension joint of strong applicability |
| CN108660919B (en) * | 2018-07-05 | 2023-08-25 | 中裕铁信交通科技股份有限公司 | Heavy double-beam modular bridge expansion device |
| CN109440637A (en) * | 2018-12-19 | 2019-03-08 | 衡水中铁建工程橡胶有限责任公司 | A kind of highway bridge antidetonation telescopic device |
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Effective date of registration: 20240111 Address after: 611400 No. 799, hope road, Wujin street, Xinjin District, Chengdu, Sichuan (Industrial Park) Patentee after: Chengdu Xinzhu Transportation Technology Co.,Ltd. Address before: 611430 Xinjin Industrial Park, Sichuan, Chengdu Patentee before: CHENGDU XINZHU ROAD & BRIDGE MACHINERY Co.,Ltd. |