CN104988852A - Preset jacking apparatus for handling bridge-head jump problem by the use of adjustable lapping slab - Google Patents
Preset jacking apparatus for handling bridge-head jump problem by the use of adjustable lapping slab Download PDFInfo
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- CN104988852A CN104988852A CN201510268412.8A CN201510268412A CN104988852A CN 104988852 A CN104988852 A CN 104988852A CN 201510268412 A CN201510268412 A CN 201510268412A CN 104988852 A CN104988852 A CN 104988852A
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Abstract
The invention discloses a preset jacking apparatus for handling a bridge-head jump problem by the use of an adjustable lapping slab. The apparatus comprises a refitted maintenance vehicle (1), a lapping slab (2), external threaded rods (6), a laser leveling device (7), a preset bearing platform and a low-frequency electric wrench. The external threaded rods (6), the laser leveling device (7) and the low-frequency electric wrench are arranged on the refitted maintenance vehicle (1); the lapping slab is provided with multiple jacking holes (13) and grouting holes (14); each jacking hole is internally provided with a threaded sleeve (5); and the lapping slab is placed on the preset bearing platform. During a jacking process, the external threaded rods (6) abut against upper portion bearing platform block grooves (15) and are engaged with the internal threaded sleeves (5), the lapping slab is jacked, the laser leveling device (7) indicates that the lapping slab (2) and the road are on the same plane, the gap formed during the jacking process is filled with grout through the grouting holes (14) by a grouting device, and normal traffic can be restored after the grout solidifies. The jacking apparatus is designed in a preset manner, is high in generality, is convenient to construct, and is low in cost.
Description
Technical field
Patent of the present invention belongs to civil construction project field, relates to a kind of attachment strap lift-up device administering bridge foundation sedimentation.
Background technology
Bumping at bridge-head refers to that the sedimentation between the embankment after due to bridges and culverts structure and abutment exceedes a certain limit value, causes automobile to produce the phenomenon of up-down vibration through this section wheel.Form the reason of differential settlement, mainly contain foundation depression, ground bankets sinking, road structure layer compression, working measure are improper, design reasons etc.
The domestic and international processing mode for problem of bumping at bridge-head mainly contains transition slab at bridge head method, geo-grid method and special material cushion at present.These three kinds of bumping at bridge-head processing methods respectively have superiority, and also there is deficiency: cost is high, long in time limit, can not thoroughly solve foundation settlement problem, and settlement after construction maintenance difficulty of construction is large, align the impact of normal open car large.
Therefore, the processing scheme that after seeking large, the work of long, with strong points, generalization a kind of effective acting time, maintenance economy is convenient, difficulty is little, can reuse is of great significance.
Summary of the invention
Technical problem to be solved by this invention is: the lift-up device providing a kind of presetting system adjustable attachment strap process bumping at bridge-head, to overcome above-mentioned the deficiencies in the prior art.
The present invention solves the technical scheme that its technical problem adopts: comprise that repacking is cared the car, attachment strap, external threaded rod, laser level device, preset cushion cap, low frequency electric wrench, wherein, external threaded rod, laser level device and low frequency electric wrench are contained on repacking cares the car; Attachment strap leaves jacking hole, many places and injected hole, each jacking hole is built with thread bush, attachment strap is placed on preset cushion cap, during jacking, external screw rod props up top cushion cap block groove, overlaps and engages, jacking attachment strap with disposed thread, laser level device prompting attachment strap and road surface are in same plane, grouting equipment fills the space of jacking appearance by injected hole slip casting, takes external threaded rod after grout cures away, recovers normally to be open to traffic.
Described repacking is cared the car, and it is loaded with warning sign, grouting device; Repacking is cared the car when system-wide section carries out normal maintenance, find sedimentation, travel and also understand timely treatment in situ to attachment strap: by placing warning sign close traffic, low frequency electric wrench reverses external threaded rod jacking attachment strap, prompting leveling is assisted in simultaneously laser level device leveling, post-grouting device by injected hole, compaction grouting is carried out to sedimentation, slurries are filled jacking space and are also solidified, after this series of measures solves sedimentation, recover normally to be open to traffic order.
Described attachment strap is that the steel concrete attachment strap executed and build is watered at scene, excessive for realizing end of the bridge place rigidity, extends sedimentation time of origin, facilitates the later stage rapidly and efficiently to administer sedimentation simultaneously; It is laid with ten injected holes and nine jacking holes, nine jacking holes are vertically corresponding one by one with the groove of the top cushion cap block of preset cushion cap.
Described preset cushion cap, formed by the anchoring of upper and lower two-layer concrete block anchoring adhesive, totally three groups, wherein: often organize upper strata and comprise three top cushion cap blocks, Mei Zu lower floor comprises seven bottom cushion cap blocks, insert concrete block slot by concrete block between each adjacent cushion cap block to connect, and use anchoring adhesive anchoring; Each top cushion cap block is laid with a circular groove, is all welded with circular stainless steel substrates bottom three circular grooves, for external threaded rod provides conflict active position, avoids offseting in external threaded rod twist process; Bottom cushion cap block is placed on below the cushion cap of top, by stress spread, provides the support force that lift-up device is conducted oneself with dignity.
The described thread bush being positioned at jacking hole place, by being weldingly fixed on jacking hole place with the arrangement of reinforcement of attachment strap; Low frequency electric wrench reverses external threaded rod, and external threaded rod engages with thread bush, makes attachment strap jacking.
Described external threaded rod is heavy caliber trapezoidal thread bar, and its lower end props up top cushion cap block groove, and its upper end is reversed by low frequency electric wrench, and engages with the thread bush be weldingly fixed on attachment strap jacking hole, thus realizes jacking attachment strap.
Described laser level device, comprises laser bearing and prism bearing two parts; Laser bearing is vertically placed on road surface, and it installs laser beam emitting device and laser receiver; Prism bearing is vertically placed on attachment strap, and it installs the reflective prism in right angle.
The reflective prism in described right angle, for the laser that reflects laser emitter is launched, whether prompting attachment strap and road surface be at same plane.
Described laser beam emitting device, for Emission Lasers, laser is reflective prismatic reflection through right angle, attachment strap jacking to road surface at same plane time, received by laser receiver, prompting attachment strap with road surface at same plane.
The lift-up device (being called for short presetting system lift-up device) of presetting system provided by the invention is adjustable attachment strap process bumping at bridge-head, compared with prior art, has following main advantage:
1. presetting system design, advances to design stage consideration by the solution of bumping at bridge-head, efficient improvement fast.
The present invention is from design, construction, maintenance stage, the solution of bumping at bridge-head is advanceed to design stage consideration, so that when the later stage finds problem of bumping at bridge-head, preset lift-up device is utilized to reach efficient object of administering fast, avoid the construction on a large scale of conventional method, heavy excavation, backfill problem greatly, significantly reduce the maintenance time, use manpower and material resources sparingly.
2. presetting system lift-up device application is strong, simple to operate, can volume production.
This apparatus design is simple, primarily of cushion cap, attachment strap, threaded rod, low frequency electric wrench, levelling device composition; Easy and simple to handle, utilize the mode of screw rod jacking to realize administering object; Workable, can volume production be carried out.
3. applied widely, be almost applicable to all bridge constructions.
4. the settlement issues produced between the embankment that the present invention fills mainly for abutment and the flexibility of rigid support, utilizes lift-up device to solve settlement issues.And the generation of " bumping at bridge-head " problem is nearly all the differential settlement problem because different reason causes, belongs to the design and solve in scope.
5. the present invention carries out two-way Four-Lane Road mainly for Class II highway standard is example, carries out size design.When category of roads, design standard difference, by traffic study, this link counting is analyzed, design attachment strap size according to code requirement and arrange injected hole and jacking hole.For the lift-up device that different road design is dissimilar, applicable each standard highway bridge substantially can be accomplished.Therefore, the design has good application prospect.
In a word, the present invention has presetting system design, highly versatile, easy construction, low cost and other advantages.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is single group cushion cap overall schematic.
Fig. 3 is top cushion cap block structure schematic diagram.
Fig. 4 is cushion cap connection diagram.
Fig. 5 is that schematic diagram is laid in attachment strap jacking hole.
Fig. 6 is that attachment strap injected hole lays schematic diagram.
Fig. 7 is the non-leveling view of laser level device.
Fig. 8 is laser level device leveling view.
Fig. 9 is attachment strap sedimentation schematic diagram.
Figure 10 is threaded rod jacking attachment strap to time parallel with road surface, occurs sedimentation space schematic diagram.
In figure: 1. repacking is cared the car; 2. attachment strap; 3. top cushion cap block; 4. bottom cushion cap block; 5. be positioned at the thread bush at jacking hole place; 6. external threaded rod; 7. laser level device; 8. the reflective prism in right angle; 9. laser beam emitting device; 10. laser receiver; 11. rigidity abutments; 12. roadbeds; 13. jacking holes; 14. injected holes; 15. top cushion cap block grooves; 16. concrete blocks; 17. concrete block slots; 18. laser bearings; 19. prism bearings.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described, but do not limit the present invention.
The lift-up device of presetting system provided by the invention is adjustable attachment strap process bumping at bridge-head, mainly for " bumping at bridge-head " problem produced between the embankment that abutment and the flexibility of rigid support is filled caused by sedimentation.Its structure as shown in Figure 1, comprises that repacking cares the car 1, attachment strap 2, external threaded rod 6, laser level device 7, preset cushion cap, low frequency electric wrench, wherein: external threaded rod 6, laser level device 7 and low frequency electric wrench are contained in repacking and care the car on 1.Attachment strap 2 leaves nine jacking hole, place 13 and ten place's injected holes 14, jacking hole 13 disposed thread cover 5, attachment strap 2 is placed on preset cushion cap, and during jacking, external screw rod 6 props up top cushion cap block groove 15, overlaps 5 and engages, jacking attachment strap with disposed thread.
Described repacking cares the car 1, reequip on common basis of caring the car and come, described repacking comprises external threaded rod 6, laser level device 7, low frequency electric wrench, warning sign, grouting device etc. on referring to and being placed on by improvement bumping at bridge-head equipment needed thereby and caring the car.Place them on caring the car, when convenient construction is administered, directly take.Repacking cares the car 1 when system-wide section carries out normal maintenance, find sedimentation (as Fig. 9), and the timely treatment in situ of meeting, by placing warning sign close traffic, low frequency electric wrench reverses external threaded rod 6 jacking attachment strap 2, laser level device 7 assists prompting leveling (as Figure 10) simultaneously, post-grouting device by injected hole 14 compaction grouting, slurries are filled jacking space and are also solidified, and take external threaded rod 6 away, after this series of measures solves sedimentation, recover normally to be open to traffic.
Described attachment strap 2 is that the steel concrete attachment strap executed and build is watered at scene, excessive for realizing end of the bridge place rigidity, extends sedimentation time of origin, facilitates the later stage rapidly and efficiently to administer sedimentation simultaneously.The present invention mainly carries out two-way Four-Lane Road for Class II highway standard, carry out size design, attachment strap is of a size of 10m × 7.5m, it is laid with ten injected holes 14 (distribution is as Fig. 6) and nine jacking holes 13 (distribution is as Fig. 5), nine jacking holes are vertically corresponding with top cushion cap block groove 15.Object attachment strap 2 being arranged nine jacking holes, place 13 is, both can realize local jacking, the jacking while of also can carrying out, to administer various angle differential settlement.Object attachment strap 2 being arranged ten place's injected holes 14 is: can, according to the slip casting of actual conditions many places, to ensure the evenly closely knit of slurries, for attachment strap 2 provides larger bearing capacity, avoid again bumping at bridge-head occurring.
Described preset cushion cap, is formed (as Fig. 2) by the anchoring of upper and lower two-layer concrete block anchoring adhesive, and totally three groups, connection as shown in Figure 4.Wherein often organize upper strata and comprise the top cushion cap block 3 (as Fig. 3) that three are of a size of 2000mm × 500mm × 450mm, Mei Zu lower floor comprises seven and is of a size of 1000mm × 1000mm × 450mm bottom cushion cap block 4.The object of upper and lower two-layer concrete bearing platform block design is, directly can make concrete block in precast yard, then be transported to job site and directly assemble, save the engineering time, simplify constructing operation.From mechanical analysis, preset cushion cap divides upper and lower two-layer design, can provide stronger bearing capacity, postpones the time of attachment strap generation sedimentation.In addition, abutment end generation sedimentation far away reaches 40mm and will produce obvious vehicle bump at bridge ends, and now preset cushion cap relative tilt angle is 0.023 ° to the maximum, and the inclination of preset cushion cap can be ignored, and can not have an impact to jacking attachment strap.
Described top cushion cap block 3 and bottom cushion cap block 4, its one end is provided with concrete block 16, and the other end is provided with concrete block slot 17.Insert concrete block slot 17 by concrete block 16 between each adjacent cushion cap block to connect, and use anchoring adhesive anchoring.Top cushion cap block 3 and bottom cushion cap block 4 are cuboid concrete blocks, for supporting attachment strap 2, for the external threaded rod 6 of jacking provides active position.Preset cushion cap can support attachment strap 2 simultaneously, together provides bearing capacity with the soil body; And can rammed subgrade to a certain extent, delayed fallout occurs.Each top cushion cap block 3 is laid with a circular groove 15, is all welded with circular stainless steel substrates bottom each circular groove, for screw rod provides conflict active position, avoids offseting in external threaded rod 6 twist process.Bottom cushion cap block 4 is placed on below the cushion cap of top, by stress spread, provides stronger bearing capacity.
The described thread bush 5 being positioned at jacking hole place, by being weldingly fixed on jacking hole 13 place with the arrangement of reinforcement of attachment strap, adopt bronze ZCuAl10Fe3 as material, high-strength and anti-corrosion, low frequency electric wrench reverses external threaded rod 6, external threaded rod 6 engages with thread bush 5, because thread bush 5 is fixed on attachment strap, so can drive attachment strap jacking.
Described external threaded rod 6, it is heavy caliber trapezoidal thread bar, adopt No. 45 steel as material, ensure high strength and self-lock ability, external threaded rod 6 lower end props up top cushion cap block groove 15, upper end is reversed by low frequency electric wrench, and engages with the thread bush 5 be weldingly fixed on attachment strap jacking hole, thus realizes jacking attachment strap 2.After the grout cures injected by injected hole 14, available low frequency electric wrench reverses and takes out external threaded rod 6, closes injected hole 14 and jacking hole 13, is normally open to traffic afterwards.
Described expansion coupling, can buy by market, and be made up of annexes such as bellows and end pipe, support, flanges, made by IR fiber fabric and steel, expansion coupling elongation rate is 300%, extending to 450mm.Attachment strap 2 is connected with preset cushion cap by expansion coupling, in expansion coupling lower end and top cushion cap block groove 15, circular steel disc is bolted connection, the thread bush 5 at expansion coupling upper flanges and jacking hole place overlaps by being welded to connect, and can prevent jacking hole in slip casting process from being blocked by injection slurry.
Described laser level device 7, is placed on caring the car, and comprises laser bearing 18 and prism bearing 19 two parts, for point out in jacking process attachment strap whether with road surface in same plane (course of work is as Fig. 7 and Fig. 8).Laser bearing 18 is vertically placed on road surface, and it installs laser beam emitting device 9 and laser receiver 10; Prism bearing 19 is vertically placed on attachment strap 2, and it installs the reflective prism 8 in right angle.In jacking process, two groups of laser level devices 7 work simultaneously, accurately can point out attachment strap and road surface whether in same plane.
The reflective prism 8 in described right angle, is contained on the prism bearing 19 in laser level device 7, and for the laser that reflects laser emitter 9 is launched, whether prompting attachment strap and road surface be in same plane.
Described laser beam emitting device 9, is contained on the laser bearing 18 in laser level device 7, and for Emission Lasers, through right angle, reflective prism 8 reflects laser.When attachment strap 2 jacking to parallel with road surface time, the laser of reflection can be received by laser receiver 10, now laser level device 7 point out attachment strap 2 with road surface at same plane.
Described low frequency electric wrench, can buy by market, for reversing external threaded rod 6, realizes jacking attachment strap.
Described jacking hole 13 is positioned at attachment strap 2, totally nine, arranges that distribution is as Fig. 5, thread bush 5 is weldingly fixed in jacking hole, external threaded rod 6 engages with jacking hole inner screw sheath 5, and low frequency electric wrench reverses external threaded rod 6 and drives thread bush 5 in jacking hole, realizes jacking attachment strap 2.Vertically corresponding one by one with top cushion cap circular groove 15 immediately below this jacking hole 13.
Described injected hole 14 is positioned at attachment strap 2, totally ten, and arrange that distribution is as Fig. 6, grouting equipment carries out compaction grouting by injected hole 14 pairs of bridge foundations, for the space occurred after filling attachment strap jacking leveling.And after grout cures, can bearing capacity of foundation soil be strengthened, avoid again bumping at bridge-head occurring.
Described top cushion cap block groove 15, is positioned at cushion cap block 3 upper surface center, top (as Fig. 3).Top cushion cap block groove 15 bottom welding has circular stainless steel substrates to ensure sufficient intensity, simultaneously for external screw rod 6 provides conflict active position, avoids offseting in external threaded rod 6 twist process.
Described concrete block 16, is positioned at one end of cushion cap, and the cushion cap block other end is provided with concrete block slot 17, as shown in Figure 3.The concrete block 16 of previous cushion cap block inserts the concrete block slot 17 of a rear cushion cap block, and uses anchoring adhesive anchoring, to ensure the intensity of junction.
Described laser bearing 18 is parts of laser level device 7, and its underpart base keeps parallel with road surface, and top straight-bar is vertical with lower seat, ensures that the laser launched is parallel with road surface.It installs laser beam emitting device 9 and laser receiver 10.
Described prism bearing 19 is parts of laser level device 7, and its underpart base keeps parallel with attachment strap, and top straight-bar is vertical with lower seat.It installs the reflective prism 8 in right angle, for reflects laser.In addition, prism bearing 19 is identical with laser bearing 18 overall height, ensures when attachment strap and road surface are in same plane, and the laser that laser beam emitting device 9 is launched can be reflected to laser receiver 10 accurately by the reflective prism 8 in right angle.
The lift-up device of presetting system provided by the invention is adjustable attachment strap process bumping at bridge-head, its course of work is as follows:
When constructing road, basement process is identical with traditional basement process, adopts sand backfill, sandy soils is placed successively and fixes seven bottom cushion cap blocks 4 and three top cushion cap blocks 3, its middle and upper part cushion cap block is reserved with circular groove 15, backfills Gravil-soil cushion afterwards.Cushion cap is equal with gravel backfill soil, lays layer of plastic film, and top pouring steel concrete attachment strap 2, concrete attachment strap presets jacking hole 13 and injected hole 14, thread bush 5 is by being weldingly fixed on jacking hole 13 place with the arrangement of reinforcement of attachment strap.When placing attachment strap 2, jacking hole 13 and cushion cap groove 15 one_to_one corresponding, sealing jacking hole 13 and injected hole 14.
After normal driving situation a period of time, because abutment is different from the non-deformability of bridgehead filled soil material, foundation soil generation sedimentation, the i.e. uneven sedimentation of attachment strap 2 (as Fig. 9) of abutment 11 and roadbed 12 joint.Car body, through transition slab at bridge head, can produce the sensation of significantly jolt " jump ", namely " bumping at bridge-head " phenomenon occurs.
Repacking cares the car 1 when system-wide section carries out normal maintenance, finds sedimentation and timely treatment in situ.External threaded rod 6 is torqued into the thread bush 5 being built in attachment strap jacking hole by low frequency electric wrench, until external threaded rod 6 lower end props up top cushion cap block groove 15, continues to reverse the lifting of drive attachment strap 2.Meanwhile, two groups of laser level devices 7 point out attachment strap jacking state, until road surface is smooth-going, occur sedimentation space (as Figure 10).Wherein, 9 place's jacking unit can local jacking, also can simultaneously jacking, to administer various angle differential settlement.
Then, adopt compaction grouting mode to carry out slip casting by injected hole 14 reserved in attachment strap, fill sedimentation space, slurries select efficient early strength mortar, condense and can reach design strength in 24 hours.Treat grout cures, take external threaded rod 6 away, realize normally being open to traffic.
For recurrent problem of bumping at bridge-head, the present invention avoids the construction on a large scale of conventional method, heavy excavation, backfills problem greatly, thus reduces construction cost and time.When bumping at bridge-head needs to administer again, utilize this device can save more expenses.Meanwhile, the present invention can recover to be open to traffic in 24 hours in construction, drastically reduce the area the impact of construction on traffic.
The present invention is from design, construction, maintenance stage, the solution of bumping at bridge-head is advanceed to design stage consideration, so that when the later stage finds problem of bumping at bridge-head, utilize preset lift-up device to reach efficient object of administering fast, significantly reduce the maintenance time, use manpower and material resources sparingly.And compared to prior art, construction process does not have more complex steps, be applicable to system-wide section and promote.
Generally speaking, simplicity of design of the present invention, primarily of cushion cap, attachment strap, threaded rod, electric wrench, levelling device composition, utilize the mode of spiral jacking to realize administering object, easy and simple to handle, application is strong, easily promotes; Can accurately control attachment strap top lifting height, safe and reliable; Without the need to changing attachment strap or soil removal and replacement refills, the improvement time can be saved; This device can reuse, to administer the generation again of problem of bumping at bridge-head; Applied widely, can volume production be carried out.
Claims (9)
1. the lift-up device of a presetting system adjustable attachment strap process bumping at bridge-head, it is characterized in that comprising that repacking is cared the car (1), attachment strap (2), external threaded rod (6), laser level device (7), preset cushion cap, low frequency electric wrench, wherein: external threaded rod (6), laser level device (7) and low frequency electric wrench are contained in repacking and care the car on (1); Attachment strap (2) leaves jacking hole, many places (13) and injected hole (14), each jacking hole (13) is built with thread bush (5), attachment strap (2) is placed on preset cushion cap, during jacking, external screw rod (6) props up top cushion cap block groove (15), engage with disposed thread cover (5), jacking attachment strap.
2. the lift-up device of presetting system according to claim 1 adjustable attachment strap process bumping at bridge-head, is characterized in that described repacking is cared the car (1), it is loaded with warning sign, grouting device; Repacking cares the car (1) when system-wide section carries out normal maintenance, find sedimentation, traveling goes up to attachment strap (2) and understands timely treatment in situ: by placing warning sign close traffic, low frequency electric wrench reverses external threaded rod (6) jacking attachment strap (2), laser level device (7) assists prompting leveling simultaneously, post-grouting device carry out compaction grouting by injected hole (14), slurries are filled jacking space and are solidified, take external threaded rod (6) away, solve after sedimentation through this series of measures, recover normally to be open to traffic order.
3. the lift-up device of presetting system according to claim 1 adjustable attachment strap process bumping at bridge-head, it is characterized in that described attachment strap (2) is that the steel concrete attachment strap executed and build is watered at scene, excessive for realizing end of the bridge place rigidity, extend sedimentation time of origin, facilitate the later stage rapidly and efficiently to administer sedimentation simultaneously; It is laid with ten injected holes (14) and nine jacking holes (13), nine jacking holes are vertically corresponding one by one with the groove (15) on top cushion cap block (3) of preset cushion cap.
4. the lift-up device of presetting system according to claim 1 adjustable attachment strap process bumping at bridge-head, it is characterized in that described preset cushion cap, formed by the anchoring of upper and lower two-layer concrete block anchoring adhesive, totally three groups, wherein: often organize upper strata and comprise three tops cushion cap block (3), Mei Zu lower floor comprises seven bottoms cushion cap block (4), inserts concrete block slot (17) and connects, and use anchoring adhesive anchoring between each adjacent cushion cap block by concrete block (16); Each top cushion cap block (3) is laid with a circular groove (15), circular stainless steel substrates is all welded with bottom three circular grooves, for external threaded rod (6) provides conflict active position, avoid offseting in external threaded rod (6) twist process; Bottom cushion cap block (4) is placed on below the cushion cap of top, by stress spread, provides the support force that lift-up device is conducted oneself with dignity.
5. the lift-up device of presetting system according to claim 1 adjustable attachment strap process bumping at bridge-head, the thread bush (5) at jacking hole place is positioned at, by being weldingly fixed on jacking hole (13) place with the arrangement of reinforcement of attachment strap (2) described in it is characterized in that; Low frequency electric wrench reverses external threaded rod (6), and external threaded rod (6) engages with thread bush (5), makes attachment strap (2) jacking.
6. the lift-up device of presetting system according to claim 1 adjustable attachment strap process bumping at bridge-head, it is characterized in that described external threaded rod (6) is heavy caliber trapezoidal thread bar, its lower end props up top cushion cap block groove (15), its upper end is reversed by low frequency electric wrench, and engage with the thread bush (5) be weldingly fixed on attachment strap jacking hole, thus realize jacking attachment strap (2).
7. the lift-up device of presetting system according to claim 1 adjustable attachment strap process bumping at bridge-head, is characterized in that described laser level device (7), comprises laser bearing (18) and prism bearing (19) two parts; Laser bearing (18) is vertically placed on road surface, it is installed laser beam emitting device (9) and laser receiver (10); Prism bearing (19) is vertically placed on attachment strap (2), and it installs the reflective prism in right angle (8).
8. the lift-up device of presetting system according to claim 7 adjustable attachment strap process bumping at bridge-head, it is characterized in that the reflective prism in described right angle (8), for the laser that reflects laser emitter (9) is launched, prompting attachment strap whether with road surface at same plane.
9. the lift-up device of presetting system according to claim 7 adjustable attachment strap process bumping at bridge-head, it is characterized in that described laser beam emitting device (9), for Emission Lasers, laser is reflective prism (8) reflection through right angle, in attachment strap (2) jacking to time parallel with road surface, by laser receiver (10) receive, prompting attachment strap (2) with road surface at same plane.
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| CN201510268412.8A CN104988852B (en) | 2015-05-25 | 2015-05-25 | Presetting system is adjustable, and attachment strap processes the jacking apparatus of bumping at bridge-head |
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| CN110130219A (en) * | 2019-06-21 | 2019-08-16 | 招商局重庆交通科研设计院有限公司 | A kind of adaptive transition section apparatus solving bumping at bridge-head |
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