CN102926322B - Construction method, hoisting tool, location tire and location support for installing comb-tooth-shaped expansion joint - Google Patents
Construction method, hoisting tool, location tire and location support for installing comb-tooth-shaped expansion joint Download PDFInfo
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- CN102926322B CN102926322B CN201210436002.6A CN201210436002A CN102926322B CN 102926322 B CN102926322 B CN 102926322B CN 201210436002 A CN201210436002 A CN 201210436002A CN 102926322 B CN102926322 B CN 102926322B
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Abstract
The invention relates to a construction method for installing a comb-tooth-shaped expansion joint. The construction method is characterized by comprising the following steps of conducting construction preparation-conducting pitch removal-machining an anchor bolt group-installing the anchor bolt group-erecting an inner template-pouring concrete below a comb plate-installing the comb plate-pouring the concrete on two sides of the comb plate-maintaining-conducting acceptance checks. A movable type lifting tool comprises a frame installed on a traveling wheel, the front end of the frame is connected with a strong electromagnet controlled by a positive and negative switch through a lifting rope, and the strong electromagnet can adsorb and carry the comb plate with a smooth surface. Compared with a traditional process, the construction method can effectively solve quality defects such as expansion joint cracking, sedimentation, water seepage, tripping while traveling and abnormal sounds, simultaneously improves work efficiency and shortens a construction period. The construction method has good social benefits and economic benefits, has wide application spaces in an installing project of the comb-tooth expansion joint and has promotional values.
Description
Technical field
The invention belongs to building field, relate to a kind of mounting broach type expanssion joint construction process and lifting device, location tire, locating rack, be applicable to the construction of Urban Bridge interdigitated electrode structure shrinkage joint.
Background technology
Viaduct engineering adopts the bridge expanssion joint of hot rolling global formation interdigitated electrode structure, and speed of application is slow, poor flatness, jumps car, abnormal sound phenomenon when often there is sedimentation, infiltration, driving.
Summary of the invention
The present invention in order to make up the deficiencies in the prior art, provide a kind ofly shorten construction period, the mounting broach type expanssion joint construction process that overcomes common quality defect and lifting device, location tire, locating rack.
The present invention is achieved through the following technical solutions:
Mounting broach type expanssion joint construction process of the present invention, is characterized in that: comprise the following steps: comb plate both sides business's concrete → maintenance → inspect for acceptance is installed → built to preparation of construction → abolish pitch → processing anchor bolt group → installation anchor bolt group → install inner formword → build business's concrete → comb plate below comb plate;
Processing anchor bolt group step: comb plate is placed on burnishing surface, placement positioning tire on comb plate, cushion block placed by location tire, cushion block places the anchor plate corresponding with the hole of comb plate, by anchor bolt through the hole of the hole of anchor plate, the hole of tire, location, comb plate to burnishing surface, anchor bolt is connected with anchor plate electric welding, with three horizontal reinforcing bars that draw, four anchor plate vertical weldings is formed anchor bolt group;
Anchor bolt group step is installed: adopt locating rack to move in preformed groove by anchor bolt group, first place one group of anchor bolt group respectively at two ends, shrinkage joint, reference line is drawn along preformed groove direction by two end unit bolt groups, fixed datum two ends, fine setting anchor bolt group, make bolt upper end lower than both sides bituminous sheaths 2mm, anchor bolt group is connected with pre-buried door shape muscle and firm welding, along reference line, put into anchor bolt group successively, adjustment bolt position and height, weld anchor fixing bolt, cycling, finally completes anchor bolt location; After anchor bolt has been located, put into water proof rubber band successively, corrosion resistant plate, interdigitated electrode structure carry out examination and install, guarantee that anchor bolt is inserted in interdigitated electrode structure smoothly, and lower than interdigitated electrode structure surface 3mm;
Comb plate installation steps: before rubber strip of mating formation, at the even blade coating waterproofing mortar of the concrete surface of building, strike off, then to mat formation water proof rubber band, lay corrosion resistant plate, with the corresponding placed comb tooth plate of movable hanging holding tool, comb plate end face and superelevation of highway surface control, at 0 ~ 2mm, to check with wedge-shaped feeler gauge, and adjacent comb type steel plate highness change is at 2mm; At comb plate preformed hole built-in spring pad, use torque wrench tightening nut, by comb plate fixation, install errorless after, with fluid sealant, bolt hole is filled and led up.
Mobile hoisting instrument comprises the vehicle frame be arranged on road wheel, and vehicle frame front end is connected with the strong electromagnet of positive and negative switch control rule by hoisting rope, and strong electromagnet can adsorb the ganoid comb plate of carrying.
Location tire comprises two parallel angle bar and is arranged between two angle bar two blocks steel plates side by side, one block plate is fixed, another block plate regulates plan-position by loose slot reserved on angle bar, and on two block plates, preformed hole position is corresponding with comb plate preformed hole.
Locating rack comprises three transverse frames and four longitudinal anchor plates, and the screw rod be arranged on for adjusting bolt group elevation on framework, anchor plate is vertically welded in below framework, and the screw rod upper end of adjusting bolt group elevation is provided with adjusting nut, and lower end is provided with the bending segment of suspention anchor bolt group.
The invention has the beneficial effects as follows, the method raises whole other operation form of construction work in traditional construction technique, optimization technological process, to be welded with anchor plate by anchor bolt by location tire and form anchor bolt group, asphalt surface course paves after shrinkage joint cut, and by locating rack is overall, anchor bolt group is put into groove and embedded ribs firm welding, easy to operate, improve efficiency of construction, ensure that anchor bolt position is accurate, overcome and jump the mass defect such as car, abnormal sound; Mobile hoisting front tool is the strong magnets of positive and negative switch control rule, can the smooth comb plate of absorption surface, overcomes artificial directly carrying and, without the shortcoming of origin of force, improves efficiency of construction, shorten the duration; Build C50 steel fibre business concrete by different level, first build business's concrete below comb plate, build height anchor plate to flush, after comb plate installation, build comb plate both sides business's concrete again, this construction technology both ensure that below comb plate, business's concrete was closely knit, guaranteed that again the business's concrete between comb plate with bituminous sheaths engages tightly, overcame the mass defects such as shrinkage joint sedimentation, infiltration.This method solve the common quality defect at traditional handicraft mounting broach type shrinkage joint, the mass defect such as car, abnormal sound is jumped when effectively can solve crack, shrinkage joint, sedimentation, infiltration, driving compared with traditional handicraft, around bridge comb-type shrinkage joint, the control aspect such as planeness, shrinkage joint sedimentation, infiltration is significantly increased, improve operating efficiency simultaneously, shorten the duration, reduce construction cost, there is good social benefit and economic benefit, in the installing engineering of bridge comb-type shrinkage joint, there is wide application space, have promotional value.
Accompanying drawing explanation
Fig. 1 is interdigitated electrode structure shrinkage joint sectional drawing; Fig. 2 is location tire schematic diagram; Fig. 3 locating rack front view schematic diagram, Fig. 4 is several locating rack schematic top plan view.Fig. 5 is movable hanging holding tool schematic diagram.
In figure, 1 bituminous concrete, 2 pre-buried gate muscle, 3 little tooth plates, 4 large tooth plates, 5 water proof rubber bands, 6 anchor bolts, 7 C50 steel fibrous concretes, 8 C40 bridge deck pavements, 9 preformed holes, 10 bolts, 11 frameworks, 12 adjusting bolt group elevation screw rods, 13 nuts, 14 anchor plates, 15 flat boards, 16 cross bars, 17 road wheels, 18 vehicle frames, 19 strong electromagnets.
Detailed description of the invention
Accompanying drawing is a kind of specific embodiment of the present invention.
Mounting broach type expanssion joint construction process of the present invention, comprises the following steps: preparation of construction → abolish pitch → processing anchor bolt group → installation anchor bolt group → install inner formword → build business's concrete below comb plate → comb plate installs (water proof rubber band, corrosion resistant plate) → build comb plate both sides business's concrete → maintenance → inspect for acceptance.
technical indicator: shrinkage joint and superelevation of highway surface≤2mm, adjacent fingers plate hight difference≤2mm.Shrinkage joint surrounding without loose, crack, sedimentation, infiltration, during driving without jumping car, abnormal sound phenomenon.
preparation of construction
1), the quality of comb plate, C50 steel fiber concrete, corrosion resistant plate, water proof rubber band, anchor bolt is checked can to conform to quality requirements, to receiving inspections such as comb plate physical dimension, degree of agreements;
2), shrinkage joint sequence of construction is determined in advance according to construction condition, Road width, plant equipment ability etc.;
3), determine that the control point of planeness and infiltration and foundation of inspecting for acceptance are installed in shrinkage joint.
abolish pitch
Determine to abolish pitch width according to comb plate and shrinkage joint design width.According to designing requirement, abolish the every side of pitch scope wide go out comb plate 15cm.By the center of central hard shoulder and anticollision barrier determination beam-ends preset slot, determine two sidelines at shrinkage joint by design width.Both sides, sideline laying colour bar cloth prevents abolishing the waste residue powder etc. produced in pitch process and pollutes flexible pavement.
First cut out the dark gap of 1cm with manual cast-cutting saw along sideline, then with large-scale cast-cutting saw joint-cutting to case beam agent structure.Abolish pitch with pneumatic pick and clean out foreign material in groove, the process of abolishing is forbidden to destroy the bituminous sheaths beyond slot, asphalt slag is deposited into colour bar cloth supernatant and transports to appointment place.Beam-ends preset slot up and down must be through, must not block.
processing anchor bolt group
Comb plate is placed on burnishing surface, placement positioning tire on comb plate, cushion block placed by location tire, cushion block height=rubber tile thickness+(corrosion resistant plate thickness)-location tire thickness-2mm, cushion block places the anchor plate corresponding with the hole of comb plate, by anchor bolt through the comb nibs of the hole of anchor plate, the hole of tire, location, comb plate to burnishing surface, anchor bolt is connected with anchor plate electric welding, with three horizontal reinforcing bars that draw by four anchor plate vertical weldings formation anchor bolt groups.Anchor plate must not be made in welding process to be out of shape.
To be welded with anchor plate by anchor bolt by location tire and form anchor bolt group, this procedure can be constructed in advance, does not restrict by other operations.Location tire take comb plate as template "one off" production, and physical dimension and preformed hole position coincide with comb plate, and preformed hole position and comb plate on anchor plate, to locate tire identical.Adopt stereoscopic localized carcass system anchor plate to weld with anchor bolt and form anchor bolt group, ensure that anchor bolt is perpendicular to anchor plate plane, anchor bolt exposes anchor plate pin-point accuracy.
Location tire comprises two parallel angle bar and is arranged between two angle bar two blocks steel plates side by side, one block plate is fixed, another block plate regulates plan-position by loose slot reserved on angle bar, and on two block plates, preformed hole position is corresponding with comb plate preformed hole.Steel plate is arranged on angle bar by bolt.
anchor bolt group is installed
Adopt special locating rack to move in preformed groove by anchor bolt group, first place one group of anchor bolt group respectively at two ends, shrinkage joint.Reference line is drawn along preformed groove direction, fixed datum two ends by two end unit bolt groups.Fine setting anchor bolt group, makes bolt upper end lower than both sides bituminous sheaths 2mm, anchor bolt group is connected with pre-buried door shape muscle and firm welding.Along reference line, put into anchor bolt group successively, adjustment bolt position and height, weld anchor fixing bolt, cycling, finally completes anchor bolt location.After anchor bolt has been located, put into water proof rubber band successively, corrosion resistant plate, interdigitated electrode structure carry out examination and install, guarantee that anchor bolt penetrates interdigitated electrode structure preformed hole smoothly, and lower than interdigitated electrode structure surface 2-3mm.
By special locating rack anchor bolt group entirety moved in groove with embedded ribs firm welding, ensure that anchor plate plane is parallel with both sides bituminous sheaths, anchor plate and the both sides pitch discrepancy in elevation are accurately (discrepancy in elevation h=comb plate thickness+water proof rubber tape thickness-2mm), thus ensure that the pre-buried position of anchor bolt is accurately and perpendicular to bituminous sheaths, after mounting broach plate, both sides asphaltene formation degree meets designing requirement, has stopped the mass defects such as jumping car, abnormal sound.
Locating rack comprises three transverse frames and four longitudinal anchor plates, and the screw rod be arranged on for adjusting bolt group elevation on framework, anchor plate is vertically welded in below framework, and the screw rod upper end of adjusting bolt group elevation is provided with adjusting nut, and lower end is provided with the bending segment of suspention anchor bolt group.
During use, the bolt end head of anchor bolt group upwards withstands on below the anchor plate of locating rack, the adjusting bolt group elevation screw rod of locating rack is moved up, the bending segment of its lower end is made upwards to withstand below the anchor plate of anchor bolt group, then adjusting nut is locked, again locating rack is put into groove together with anchor bolt group, on locating rack, three transverse frames ride on the pitch of both sides, thus anchor bolt group pin-point accuracy is located, then the anchor bolt bottom of anchor bolt group is welded with pre-buried door shape muscle, finally the adjusting nut of locating rack is unclamped, adjusting bolt group elevation screw rod 90-degree rotation, locating rack can be taken out.So carry out location and the installation of next anchor bolt group again.
install template
Before installing template, with rubbish in high-pressure blast (water) rifle cleaning slot, particularly because of deck paving do not build put in place and the unsettled place of pitch that causes draw dig clean.According to beam-ends gap formwork supporting plate, gap error ± 2 ㎜, form height flushes with bottom comb plate, has stainless steel slide plate under little tooth plate, and both sides, shrinkage joint form height is different.Fixed end tooth plate (little tooth plate) template end face is apart from bituminous sheaths distance=interdigitated electrode structure thickness+corrosion resistant plate thickness+rubber tile thickness=28mm+3mm+5mm=36mm, and movable end tooth plate (large tooth plate) template end face is apart from bituminous sheaths distance=interdigitated electrode structure thickness+rubber tile thickness=28mm+5mm=33mm.Inner formword must install firmly tight, prevents concrete from blocking beam-ends and to stretch gap.
build a step business concrete
First time builds to combed plate bottom surface, after comb plate installation reinforcing completes, then builds concrete outside comb plate.For ensureing that building second time business concrete thickness is not less than 8cm, when building first step concrete, puts into steel wire lump outside comb plate, takes out steel wire lump after having built concrete initial set.During concreting, colour bar cloth is laid in both sides, shrinkage joint, and trolley is walked on colour bar cloth, avoids Concrete contamination flexible pavement.Business's concrete must be built closely knit, smooth without honeycomb, and continuous placing, ensure globality; First step business concrete waters to anchor plate plane, and outside comb plate, concrete allows lower than template end face, must plucking before initial set, and concrete adopts the method for vibrating, dead angle of vibrating especially, to pulp, no longer include bubble.After vibration compacting, struck off by concrete surface with floating rule, upper surface and template are put down or lower slightly 1-2mm.
mounting broach plate
1), before rubber strip of mating formation, at the concrete surface of building, strike off even blade coating 2-3mm waterproofing mortar (this step is essential, effectively stops shrinkage joint infiltration phenomenon), protruding grit must not be had.Plain mortar 3mm first smeared by bottom, then smears waterproof mortar course, and compacting during initial set, is twisted into pitted skin with wood float; Catch up with optical pressure real after smearing second layer waterproofing mortar.
2), water proof rubber band of mating formation: check water proof rubber band, as aqua storage tank position has cavity must not use without exception.There is error in rubber cushion preformed hole and anchor bolt position, allows finishing.The phenomenons such as gauffer have not been allowed when laying water proof rubber band; Lay the mated condition of rear inspection rubber cushion preformed hole and bolt, filled up with encapsulant when gap is larger.
3), lay corrosion resistant plate: check that corrosion resistant plate has impulse-free robustness etc., clear up smooth, clean water proof rubber belt surface, places corrosion resistant plate.
4) clean corrosion resistant plate surface, is needed before mounting broach plate, with the corresponding placed comb tooth plate of lifting device, with spirit level, straight degree and planeness detection are carried out to comb plate in installation process, comb plate end face and superelevation of highway surface control to check at 0 ~ 2mm(wedge-shaped feeler gauge), adjacent comb type steel plate highness change is at 2mm.At comb plate preformed hole built-in spring pad, use torque wrench tightening nut, by comb plate fixation.After reaffirming that installation is errorless, with fluid sealant, bolt hole is filled and led up.
Mobile hoisting instrument comprises the vehicle frame be arranged on road wheel, and vehicle frame front end is connected with the strong electromagnet of positive and negative switch control rule by hoisting rope, and strong electromagnet can adsorb the ganoid comb plate of carrying.
5), anticollision barrier, central hard shoulder pouring construction time at shrinkage joint place reserved 1 meter wide, 0.3 meter is high, and 0.3 meter of dark reserved opening, anticollision barrier, central hard shoulder 0.2 meter is goed deep at shrinkage joint, and adhesive waterproof tape tilts, with the floating reserved opening of mortar.
build two step business concretes
1), clear up rubbish in groove and clean with high-pressure blast (water) rifle, before concreting, bituminous sheaths adhesive tape stickup colour bar cloth is protected, and avoids Concrete contamination bituminous sheaths.
2), business's concrete must build closely knit, smooth without honeycomb, and continuous placing, and ensure globality, concrete surface processing procedure divides three steps: carry out rubbing densification when building real, carry out wiping one's face press polish, remove laitance after final set after initial set.Behind receipts face, concrete is higher than both sides bituminous sheaths 0-2mm.
3), the waste materials such as the concrete on colour bar cloth are trickled down in cleaning in time.
maintenance
Sprinkle water on surface after concrete initial set and cover gunnysack or geotextiles, curing time is not less than 7d; Carry out traffic control by special messenger between curing time, take protection or closed measure.
inspect for acceptance
2. when stretching device is installed, its gap value locator value is completed in factory according to temperature during construction by producer, fixes with locator card.Adjustment is located and is fixed rear installation in time.
6. stretching device center line aligns with the intersegmental gap center line of beam and overlaps, and each point height of stretching device end face should be corresponding consistent with bridge floor cross section elevation.
the situation applied and promoted:
This engineering method is in the rapid improvement project in outer shroud North Road, Nantong, the application of river road, Tongyang Canal center, Nantong City Bridge Project, through designing unit, supervisor's onsite acceptance, interdigitated electrode structure shrinkage joint is connected intact with surrounding road surface, elevation is consistent, planeness meets pavement of road acceptance criteria, ensure that the integral smoothness on road surface, reach that road surface is attractive in appearance, comfortable good result of driving a vehicle.In the installing engineering of interdigitated electrode structure shrinkage joint, there is wide application space, have promotional value.
Claims (2)
1. a mounting broach type expanssion joint construction process, is characterized in that: comprise the following steps: comb plate both sides business's concrete → maintenance → inspect for acceptance is installed → built to preparation of construction → abolish pitch → processing anchor bolt group → installation anchor bolt group → install inner formword → build business's concrete → comb plate below comb plate;
Processing anchor bolt group step: comb plate is placed on burnishing surface, placement positioning tire on comb plate, cushion block placed by location tire, cushion block places the anchor plate corresponding with the hole of comb plate, by anchor bolt through the hole of the hole of anchor plate, the hole of tire, location, comb plate to burnishing surface, anchor bolt is connected with anchor plate electric welding, with three horizontal reinforcing bars that draw, four anchor plate vertical weldings is formed anchor bolt group; Location tire comprises two parallel angle bar and is arranged between two angle bar two blocks steel plates side by side, one block plate is fixed, another block plate regulates plan-position by loose slot reserved on angle bar, and on two block plates, preformed hole position is corresponding with comb plate preformed hole;
Anchor bolt group step is installed: adopt locating rack to move in preformed groove by anchor bolt group, first place one group of anchor bolt group respectively at two ends, shrinkage joint, reference line is drawn along preformed groove direction by two end unit bolt groups, fixed datum two ends, fine setting anchor bolt group, make bolt upper end lower than both sides bituminous sheaths 2mm, anchor bolt group is connected with pre-buried door shape muscle and firm welding, along reference line, put into anchor bolt group successively, adjustment bolt position and height, weld anchor fixing bolt, cycling, finally completes anchor bolt location; After anchor bolt has been located, put into water proof rubber band successively, corrosion resistant plate, comb plate carry out examination and install, guarantee that anchor bolt is inserted in comb plate smoothly, and lower than comb plate surface 3mm;
Comb plate installation steps: before rubber strip of mating formation, at the even blade coating waterproofing mortar of the concrete surface of building, strike off, then to mat formation water proof rubber band, lay corrosion resistant plate, with the corresponding placed comb tooth plate of movable hanging holding tool, comb plate end face and superelevation of highway surface control, at 0 ~ 2mm, to check with wedge-shaped feeler gauge, and adjacent comb type steel plate highness change is at 2mm; At comb plate preformed hole built-in spring pad, use torque wrench tightening nut, by comb plate fixation, install errorless after, with fluid sealant, bolt hole is filled and led up; Mobile hoisting instrument comprises the vehicle frame be arranged on road wheel, and vehicle frame front end is connected with the strong electromagnet of positive and negative switch control rule by hoisting rope, and strong electromagnet can adsorb the ganoid comb plate of carrying.
2. a mounting broach type expanssion joint construction process locating rack according to claim 1, it is characterized in that: locating rack comprises three transverse frames and four longitudinal anchor plates, and the screw rod be arranged on for adjusting bolt group elevation on framework, anchor plate is vertically welded in below framework, the screw rod upper end of adjusting bolt group elevation is provided with adjusting nut, and lower end is provided with the bending segment of suspention anchor bolt group.
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| CN201210436002.6A CN102926322B (en) | 2012-11-06 | 2012-11-06 | Construction method, hoisting tool, location tire and location support for installing comb-tooth-shaped expansion joint |
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| CN201210436002.6A CN102926322B (en) | 2012-11-06 | 2012-11-06 | Construction method, hoisting tool, location tire and location support for installing comb-tooth-shaped expansion joint |
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| CN102926322B true CN102926322B (en) | 2015-07-15 |
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| CN105951598A (en) * | 2016-05-19 | 2016-09-21 | 重庆巨能建设集团路桥工程有限公司 | Installation locator for bridge prestress type multidirectional deflection telescopic device |
| CN108468271B (en) * | 2018-04-12 | 2019-07-02 | 北京鼎翰科技有限公司 | Bridge extension joint positioning tool |
| CN110777650B (en) * | 2019-11-29 | 2024-08-20 | 中建三局第二建设工程有限责任公司 | Pre-buried assembly type expansion joint overlength installation suspension leveling positioning system and construction method |
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| CN102756988A (en) * | 2012-07-09 | 2012-10-31 | 江苏省交通工程集团有限公司 | Movable sling for mounting expansion joint of comb plate |
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| EP2013419B1 (en) * | 2006-05-03 | 2012-07-04 | Atg S.r.l. | Expansion joint for pavement items and related manufacturing and assembling method |
| KR100712013B1 (en) * | 2007-01-19 | 2007-04-27 | 림버스산업 주식회사 | Expansion joints without block out and construction method |
| CN201473884U (en) * | 2009-09-01 | 2010-05-19 | 董淑练 | Vibrationless expansion joint for highway bridge |
| CN201635003U (en) * | 2009-12-19 | 2010-11-17 | 柳州东方工程橡胶制品有限公司 | Prestressed type multi-way shift comb-shaped plate expansion device |
| CN201678943U (en) * | 2010-05-31 | 2010-12-22 | 许昌义 | Comb-type expansion joint device with keys |
| CN101985824B (en) * | 2010-08-23 | 2016-03-30 | 重庆城建控股(集团)有限责任公司 | For the embedded part installation device of bridge pad |
| CN102102340B (en) * | 2010-12-28 | 2011-10-26 | 河北路桥集团有限公司 | Installation method of bridge expansion and contraction device |
| CN202227265U (en) * | 2011-09-29 | 2012-05-23 | 衡水橡胶股份有限公司 | Comb tooth type bridge retracting device |
| CN102518036A (en) * | 2011-10-31 | 2012-06-27 | 中交一航局第四工程有限公司 | Construction method for installing bridge expansion joint |
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| CN102756988A (en) * | 2012-07-09 | 2012-10-31 | 江苏省交通工程集团有限公司 | Movable sling for mounting expansion joint of comb plate |
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| 梳齿型伸缩缝安装工艺及质量控制;王辉等;《市政技术》;20120510(第S1期);第74-77页及第105页第2-6节 * |
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