CN105178244A - Quick formwork erecting construction method for cast-in-place wave wall - Google Patents
Quick formwork erecting construction method for cast-in-place wave wall Download PDFInfo
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- CN105178244A CN105178244A CN201510475743.9A CN201510475743A CN105178244A CN 105178244 A CN105178244 A CN 105178244A CN 201510475743 A CN201510475743 A CN 201510475743A CN 105178244 A CN105178244 A CN 105178244A
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Abstract
The invention provides a quick formwork erecting construction method for a cast-in-place wave wall. According to the method, a base of the wave wall is cast and then a special casting device is used for erecting a formwork for a wall body and casting the wall body. The method includes the following steps that firstly, insertion ribs are anchored to the cast base; secondly, a foundation face is cleaned; thirdly, a measuring line is released out of a start pile of a branch bin of the wave wall body; fourthly, a bound reinforcing steel bar net of the wave wall body is fixed to the anchored insertion ribs; fifthly, the formwork is installed through a shaping formwork system of the special casting device; sixthly, the wave wall body is cast through a sequential construction method; seventhly, the formwork is detached; eighthly, a curing agent is sprayed after the formwork is detached; and ninthly, defects are repaired. By the adoption of the method, the formwork installation procedure is simplified, the problems that a formwork supporting system can hardly be erected on the upstream face and a working face is not available are solved, operation is easy and convenient, the concrete quality is good, concrete sequential construction is performed, an engineering construction period is shortened, engineering cost is reduced, the labor intensity of workers is relieved, and potential safety hazards are eliminated.
Description
Technical field:
The present invention relates to hydraulic engineering technical field, the left and right banks rock particularly in river course and hydraulic engineering and clay core wall dam wave wall construction technology specifically, are the quick formwork erection construction methods of a kind of cast-in-place wave wall.
Background technology:
Wave wall be for prevent wave cross dam crest and dam crest dash forward position arrange water retaining structure, multiplex on reservoir, river course, dykes and dams, rise wave resistance, flood control, resistance effect.
Left and right banks rock wave wall construction many employings prefabricated reinforced concrete column of current hydraulic engineering adds the prefabricated units such as precast concrete plank and constructs wave wall.Although its construction technology is simple, prefabricated in advance, very fast to in-site installation, short construction period, but the poor seismic behavior of precast plate, and plate cannot be eliminated completely with the gap between plate, if construction processing is improper, the piece imprecision between plate, discontinuity or affect by foundation settlement between each plate, easily causes wave wall wall crazing or subsides, make wave wall body of wall integral rigidity poor, non-deformability is not strong.
Also have in prior art and adopt cast-in-place mode to construct wave wall, conventional combination Steel-wood forming board mode formwork erection, bracing reinforcement template, template correction, the template of adopting stitches process, concreting, form removal more.Template generally use sizing little template assembly or big-size formwork assembled, by reinforcing pull bar, need to set up scaffold simultaneously, build for one section, to template, scaffold carries out assembledly building next section after removing again, whole construction needs constantly to set up scaffold framed bent, formwork erection, build, form removal, remove scaffold framed bent, template assembly and scaffold building considerably increase the invalid engineering time, therefore cause long in time limit, the problem such as the large and cost of resource input is high, greatly reduce operating efficiency, increase engineering to drop into and labor strength, cause efficiency low, long in time limit, use scaffold potential safety hazard larger simultaneously, particularly upstream face is in operating difficulties on dam slope.And formwork reinforcement is of poor quality, form joint is many, rigidity is weak, and concrete quality cannot ensure.
Therefore need badly and seek advanced practical, the quick formwork erection cast-in-situ construction method of cheap wave wall concrete casting device and scene, both improved wave wall body of wall integral rigidity and non-deformability, and speed of application is fast, eliminates safe hidden trouble, increases work efficiency.
Summary of the invention:
The object of this invention is to provide the quick formwork erection construction method of a kind of cast-in-place wave wall, utilize special build device fully fast formwork erection carry out wave wall concrete and jump storehouse and build, both improved wave wall body of wall integral rigidity and non-deformability, and can increase work efficiency again, and shortened the engineering construction cycle and eliminate safe hidden trouble.
To achieve these goals, the present invention adopts following technical scheme:
The invention provides the quick formwork erection construction method of a kind of cast-in-place wave wall, wave wall is divided into wave wall pedestal and wave wall body of wall two parts to construct separately, first building of wave wall pedestal is completed, anchoring joint bar on the wave wall pedestal of having built, recycle and specially build device carries out wave wall body of wall cast-in-site to wave wall body of wall formwork erection, its construction sequence is:
A, wave wall basis joint bar anchoring: hole on the wave wall pedestal of having built, inserts joint bar after hole cleaning, injects grouting agent by its anchoring.
B, base surface are cleared up: before carrying out wave wall wall construction, with all discrete materials on water under high pressure or high-pressure blast removing wave wall pedestal and fragment.
C, surveying setting-out, joint survey are checked and accepted: after wave wall basis has been cleared up, and release wave wall body of wall and divide storehouse initial pile No., and after model sheetinstallat completes, check template contours line according to construction drawing and construction control site joint survey.
D, reinforcing bar binding: reinforcing bar is processed in processing factory, processing adopts clod wash mode, and the colligation of reinforcing bar is carried out at the scene, and be fixed on the joint bar of anchoring by the steel mesh reinforcement of wave wall body of wall good for colligation, bottom Concrete seat pad supports.
E, model sheetinstallat: divide storehouse situation according to wave wall body of wall and determine.
1) odd number block: adopt special typified form system of building on device, special rail system heavy track of building device carries out simple and easy laying, and track side is located on wave wall pedestal concrete, is fixed by anchor bolt, opposite side track foundation, for filling dam body, supports with sleeper; Special build device in place after, by this special device top adjusting screw landing upstream side template and downstream template of building to design altitude, and utilize and be fixed on this special adjusting screw of building on device and fix upstream side template and downstream template.
2) even numbered blocks: adopt special typified form system of building on device, even numbered blocks is cast in after adjacent odd block has built at least 3 days intensity carries out, utilize that rail moving when building odd number block is special builds device, in place rear by this special device top adjusting screw landing upstream side template and downstream template of building to design altitude, and utilize and be fixed on this special adjusting screw of building on device and fix upstream side template and downstream template, upstream side template and downstream template utilize wearing pull bar and top fore shaft frame pipe is fixed.
F, reinforcing bar, face, storehouse are checked and accepted and concrete placings: wave wall body of wall adopts jumping storehouse to build, and concrete adopts the transport of concrete tank car, and crane hangs concrete and puts in storage, and storehouse stone is led in layering, closes a position and adopts vibrator to close a position.
G, form removable: form removable is carried out after having built 2 ~ 3 days or after concrete strength reaches 40%, first utilize the adjusting screw of special fixing upstream side template and downstream template of building device top to throw off upstream side template and downstream template during form removable, after then utilizing adjusting screw that upstream side template and the lifting of downstream template are left ground, mobile special device of building is to next pour.
H, maintenance and shrinkage joint construction: wave wall body of wall sprays curing agent maintenance after form removable; A shrinkage joint is established between every two cast-in-place pieces of wave wall body of wall, when carrying out even numbered blocks and building, in grout hole position, face, shrinkage joint, pvc pipe and cystosepiment are installed in advance, watertight rubber rod is inlayed at shrinkage joint after form removable, again with the slot that concrete flows automatically between filling two pieces of wave wall bodies of wall from wave wall body of wall top grout hole after rubber bar installation, the isolation of odd number storehouse shrinkage joint seam face brushing pitch.
I, defect repair: carry out concrete defect inspection after form removable, process by engine request according to defect type.
In step, described wave wall pedestal is holed, the spacing in hole is 30 ~ 80cm, and hole depth is minimum is 20cm, and aperture is 25 ~ 38cm.Described joint bar employing diameter is the reinforcement fabrication of φ 12 ~ φ 28, injects grouting agent by its anchoring, and the length of joint bar should make the length embedding body of wall not be shorter than 40cm.
In step e, track adopts heavy rail, and rail spacing can suitably regulate according to wave wall gravity center shift.Described adopts φ 20 screw-thread steel to make to wearing pull bar.
In step F, described wave wall body of wall is thin wall construction, and concrete is normal concrete, and maximum aggregate size is no more than 38mm.
In steph, described expansion joint setting position and width are determined by design, the embedding cystosepiment in seam face, and the embedding rubber bar joint seal in outside stitched; Parting position is corresponding with wave wall base plate parting position.
Compared with prior art, the beneficial effect that the present invention has is:
1, the present invention adopts the mode of cast-in-site to carry out constructing of wave wall body of wall, and wave wall body of wall integral rigidity is good, and resistance to deformation is stronger, does not usually affect by foundation settlement, overall uniform force, not easily causes wave wall wall crazing or subside.
2, the present invention uses automatic-moving hydraulic cantilever gantry concrete placement device for wave wall (number of patent application CN201020648386) to carry out formwork erection, form removal, simplify model sheetinstallat flow process, solve upstream face to be difficult to set up formwork bracing system and the difficult problem not having work plane, efficiently solve the difficult problem of formwork erection of the reinforcement on dam, river, the minimizing and concrete slurry runs off, has easy and simple to handle, quick construction, safe and low consumption, takies work plane and lacks and the good advantage of finished product concrete quality.
3, the present invention realizes building formwork erection to wave wall body of wall fully fast, carries out concrete and jumps storehouse and build, shorten the engineering construction cycle, reduce engineering cost, reduce labor strength, eliminate safe hidden trouble, increase work efficiency.
4, adopt this cast-in-place method can carry out long line concrete structure construction, greatly alleviate labor intensity of operating staff, save the considerable straight line duration.Owing to using sizing punching block, seam is few, few spillage, and it is bright and clean smooth-going, smooth vertical and horizontal to build finished product, and face appearance quality is superior, meets dry wall technical requirements.
Accompanying drawing illustrates:
Fig. 1 is wave wall cross section structure schematic diagram;
Fig. 2 uses " automatic-moving hydraulic cantilever gantry concrete placement device for wave wall " formwork erection state schematic cross-section;
Fig. 3 is the cast-in-place flow chart of wave wall body of wall.
Reference numeral in figure:
1-upstream side template; 2-downstream template; 3-end head formwork; 4-hydraulic pressure support rod member; 5-is to wearing pull bar; 6-door cabinet frame; 7-concrete balancing weight; 8-counterweight platform; 9-hoist engine; 10-guide wheel; 11-track; 12-wave wall pedestal; 13-upstream dam slope; 14-wave wall body of wall; 15-caulking groove; 16-chute.
Detailed description of the invention:
The present invention uses and specially builds device " automatic-moving hydraulic cantilever gantry concrete placement device for wave wall (number of patent application CN201020648386) " fully quick building wave wall body of wall and carry out formwork erection, form removal, with reference to Fig. 1, this builds device by chassis, draw-gear, typified form system and support system composition, chassis comprises a cabinet frame 6, screw mandrel diagonal brace, operating platform, counterweight platform 8 and walking mechanism, typified form system determines according to concrete pouring structure, by upstream side template 1, downstream template 2 and end head formwork 3 form, and be connected on door frame 6 by hydraulic pressure support rod member 4 suspension, the electric winch 9 of draw-gear is arranged on below the leading edge of counterweight platform 8.Counterweight platform 8 is provided with concrete balancing weight 7, and walking mechanism is made up of track 11 and the guide wheel 10 be arranged on bottom counterweight platform 8.Track 11 adopts lightweight I-beam rail, and longitudinal dike axis direction is arranged; Guide wheel 10 is stuck between two tracks 11.
Wave wall is built by laying bricks or stones to be built by laying bricks or stones by prefabricated units and is changed cast-in-place building by laying bricks or stones into.Need carry out the wave wall that quick formwork erection builds and comprise wave wall basis and wave wall body of wall 14, wave wall basis is arranged wave wall pedestal 12, wave wall pedestal 12 can establish caulking groove 15 according to designing, and also can not establish caulking groove 15.Because construction needs, wave wall is divided into wave wall pedestal 12 and wave wall body of wall 14 two parts to construct separately, and wave wall pedestal 12 is fulfiled ahead of schedule before building wave wall body of wall 14.Carry out building of wave wall pedestal 12 along dam facing or bank of river direction, wave wall pedestal 12 build complete after carry out building of wave wall body of wall 14 again.
Wave wall body of wall 14 pouring construction method:
One, wave wall basis joint bar anchoring: in order to make wave wall body of wall 14 more firmly be connected with completed wave wall pedestal 12, need on the wave wall pedestal 12 of having built anchor bar.First the wave wall pedestal 12 that Ying Yi builds is holed, and the spacing in hole is 30 ~ 80cm, and hole depth is minimum is 20cm, and aperture is 25 ~ 38cm about, after hole cleaning, then insert the joint bar of φ 12 ~ φ 28 reinforcement fabrication, injects grouting agent by its anchoring.The length of joint bar should make the length embedding wave wall body of wall 14 not be shorter than 40cm, and length is calculated by design consideration to be determined.
Two, wave wall basis cleaning: before carrying out wave wall body of wall 14 and constructing, remove all discrete materials on the wave wall pedestal 12 contacted with wave wall body of wall 14 and fragment with water under high pressure or high-pressure blast, comprise the fragment etc. of wood fragment, sawdust, iron wire head, nail, the concrete hardened and cement mortar.Need when clearing up invalid with water under high pressure or high-pressure blast to adopt chemical method cleaning.The wave wall basis no longer dabbing of having cleared up.It is fully wetting that rear water is cleaned out on wave wall basis, but must not ponding.
Three, surveying setting-out, joint survey are checked and accepted: after wave wall basis has been cleared up, and release wave wall body of wall 14 points of initial pile No. in storehouse, and after model sheetinstallat completes, check template contours line according to construction drawing and construction control site joint survey.
Four, reinforcing bar binding: reinforcing bar is processed in processing factory, processing adopts clod wash mode.The colligation of reinforcing bar is carried out at the scene.The steel mesh reinforcement of wave wall body of wall 14 good for colligation is fixed on the joint bar of anchoring; bottom Concrete seat pad supports; special build device " automatic-moving hydraulic cantilever gantry concrete placement device for wave wall (number of patent application CN201020648386) " accurate positioning after; Concrete seat pad is added in surrounding side, guarantees that reinforcement installation topping size is enough.
Five, model sheetinstallat: determine according to wave wall body of wall 14 points of storehouse situations.
1) odd number block: adopt special typified form system of building on device " automatic-moving hydraulic cantilever gantry concrete placement device for wave wall (number of patent application CN201020648386) ".Special rail system of building device utilizes the working track of wave wall pedestal 12, and adopt heavy rail (43kg/m) to carry out simple and easy laying, rail spacing is 2.47m, and rail spacing can suitably regulate according to wave wall template gravity center shift.Track side is located on wave wall foundation concrete, is fixed by anchor bolt, and opposite side track foundation, for filling dam body, supports with sleeper.Specially build device employing loader in place tethered sliding, in placely utilize the stopping means on track to fix afterwards.Special build device in place after, specially build device top adjusting screw landing upstream side template 1 and downstream template 2 to design altitude with this, and utilize and be fixed on this special adjusting screw of building on device and fix upstream side template 1 and downstream template 2.
2) even numbered blocks: adopt special typified form system of building on device, even numbered blocks is cast in adjacent odd block and has built and carry out after intensity at least 3 days.Utilize that rail moving when building odd number block is special builds device, in placely specially build device top adjusting screw landing upstream side template 1 and downstream template 2 to design altitude with this afterwards, and utilize and be fixed on this special adjusting screw of building on device and fix upstream side template 1 and downstream template 2, upstream side template 1 and downstream template 2 utilize wearing pull bar 5 and top fore shaft frame pipe is fixed.φ 20 screw-thread steel is adopted to make to wearing pull bar 5.
Special device " automatic-moving hydraulic cantilever gantry concrete placement device for wave wall (number of patent application CN201020648386) " of building is adding adhere rigidly to design size in man-hour, upstream side template 1, downstream template 3, end head formwork 3 will have enough strength and stiffness, are not subjected to displacement and are out of shape when guaranteeing concrete placings.
Six, reinforcing bar, face, storehouse are checked and accepted and concrete placings: wave wall body of wall 14 is thin wall construction, and concrete is normal concrete, and maximum aggregate size is no more than 38mm.Conveniently construct, wave wall body of wall 14 adopts jumping storehouse to build.Concrete adopts the transport of concrete tank car, and crane is hung concrete and put in storage by chute 16, and storehouse stone is led in layering, and layer thickness is less than 50cm.For preventing Segregation in blanking process, blanking height must not more than 1.5m.Close a position and adopt vibrator to close a position, vibrator distance of closing a position is no more than 2m.Concrete vibrates and adopts φ 50 cable type electric vibrator.Vibrate in process at the concrete of first floor, vibrator should insert bottom concrete; Vibrating of adjacent two layers concrete, vibrator should insert lower floor concrete 5 ~ 10cm; Fast inserting is pulled out slowly, and anti-leak-stopping shakes.Vibrating time is no longer significantly sunk with concrete, do not occur bubble, start frost boiling is as the criterion.After the inner every layer of insertion of wave wall body of wall 14 has been vibrated, open the attached vibrator being attached to wave wall body of wall 14 downstream, vibrate 10 ~ 20 seconds, to discharge the bubble be attached in wave wall body of wall 14 inclined-plane, downstream template.Wave wall body of wall 14 end face class requirement is higher, should divide wipe one's face for three times, press polish.First time face work is carried out when concrete placings receives face, and second time is carried out before concrete initial set, and third time carries out concrete surface press polish process, water should be received on concrete surface, in moisture state under and carry out before final set.
Seven, form removable: form removable is carried out after having built 2 ~ 3 days or after concrete strength reaches 40%.When carrying out form removable, care should be used to avoids corner angle and surface damage.First utilize the adjusting screw of special fixing upstream side template 1 and downstream template 2 of building device " automatic-moving hydraulic cantilever gantry concrete placement device for wave wall (number of patent application CN201020648386) " top to throw off upstream side template 1 and downstream template 2 during form removable, after then utilizing adjusting screw that upstream side template 1 and downstream template 2 lifting are left ground, mobile special device of building is to next pour.
Eight, maintenance and shrinkage joint construction: after form removable, wave wall body of wall 14 end face is wiped one's face at concrete end face, spray curing agent maintenance after press polish, and curing agent maintenance is sprayed in side after form removable.A shrinkage joint is established between every two cast-in-place pieces of wave wall body of wall 14, wave wall body of wall 14 expansion joint setting position is corresponding with wave wall base plate parting position, when carrying out even numbered blocks and building, by designing requirement, parting material is installed in grout hole position, face, shrinkage joint in advance, pvc pipe and cystosepiment are installed, watertight rubber rod is inlayed at shrinkage joint after form removable, again with the slot that concrete flows automatically between filling two pieces of wave wall bodies of wall from wave wall body of wall top grout hole after rubber bar installation, the isolation of odd number storehouse shrinkage joint seam face brushing pitch.
Nine, defect repair: carry out concrete defect inspection after form removable, process by engine request according to defect type.
Claims (6)
1. the quick formwork erection construction method of cast-in-place wave wall, it is characterized in that: first complete building of wave wall pedestal (12), at the upper anchoring joint bar of the wave wall pedestal (12) of having built, then carry out the cast-in-site of wave wall body of wall (14), its construction sequence is:
A, wave wall basis joint bar anchoring: at the upper anchoring joint bar of the wave wall pedestal (12) of having built, first in the upper boring of wave wall pedestal (12), inserts joint bar, injects grouting agent by its anchoring after hole cleaning;
B, base surface are cleared up: before carrying out wave wall body of wall (14) construction, remove all discrete materials on the wave wall pedestal (12) contacted with wave wall body of wall (14) and fragment with water under high pressure or high-pressure blast;
C, surveying setting-out, joint survey are checked and accepted: after wave wall base plate has been cleared up, release wave wall body of wall (14) point initial pile No. in storehouse according to construction drawing and construction control site joint survey, and after model sheetinstallat completes, check template contours line;
D, reinforcing bar binding: reinforcing bar is processed in processing factory, processing adopts clod wash mode, and the colligation of reinforcing bar is carried out at the scene, is fixed on the joint bar of anchoring by the steel mesh reinforcement of wave wall body of wall (14) good for colligation;
E, model sheetinstallat:
Odd number block model sheetinstallat: adopt special typified form system of building on device, special rail system heavy track of building device carries out simple and easy laying, and track side is located on wave wall pedestal concrete, is fixed by anchor bolt, opposite side track foundation, for filling dam body, supports with sleeper; Special build device in place after, by this special device top adjusting screw landing upstream side template (1) and downstream template (2) of building to design altitude, and utilization is fixed on this special adjusting screw of building on device fixes upstream side template (1) and downstream template (2);
Even numbered blocks model sheetinstallat: adopt special typified form system of building on device, even numbered blocks is cast in after adjacent odd block has built at least 3 days intensity carries out, utilize that rail moving when building odd number block is special builds device, in place rear by this special device top adjusting screw landing upstream side template (1) and downstream template (2) of building to design altitude, and utilize and be fixed on this special adjusting screw of building on device and fix upstream side template (1) and downstream template (2), upstream side template (1) and downstream template (2) utilize wearing pull bar (5) and top fore shaft frame pipe is fixed,
F, reinforcing bar, face, storehouse are checked and accepted, concrete placings: wave wall body of wall (14) adopts jumping storehouse to build, and concrete adopts the transport of concrete tank car, and crane hangs concrete and puts in storage, and storehouse stone is led in layering, closes a position and adopts vibrator to close a position;
G, form removable: form removable is carried out after having built 2 ~ 3 days or after concrete strength reaches 40%, first utilize the adjusting screw of the special fixing upstream side template (1) and downstream template (2) of building device top to throw off upstream side template (1) and downstream template (2) during form removable, after then utilizing adjusting screw that upstream side template (1) and downstream template (2) lifting are left ground, mobile special device of building is to next pour;
H, maintenance and shrinkage joint construction: wave wall body of wall (14) end face is wiped one's face at concrete end face, spray curing agent maintenance after press polish, and curing agent maintenance is sprayed in side after form removable; Establish a shrinkage joint between every two cast-in-place pieces of wave wall body of wall (14), when carrying out even numbered blocks and building, by designing requirement, parting material is installed in grout hole position, face, shrinkage joint in advance;
I, defect repair: carry out concrete defect inspection after form removable, process by engine request according to defect type.
2. the quick formwork erection construction method of the cast-in-place wave wall of one according to claim 1, it is characterized in that: this need carry out the wave wall that quick formwork erection builds and comprise wave wall pedestal (12) and wave wall body of wall (14), the upper boring of wave wall pedestal (12), joint bar is inserted, at the upper anchor bar of wave wall pedestal (12) in hole; Wave wall body of wall (14) is thin wall construction, and concrete is normal concrete, and maximum aggregate size is no more than 38mm; Be fixed on the joint bar of anchoring by the steel mesh reinforcement of wave wall body of wall (14), bottom Concrete seat pad supports.
3. the quick formwork erection construction method of the cast-in-place wave wall of one according to claim 1, it is characterized in that: in step, in the upper boring of described wave wall pedestal (12), the spacing in hole is 30 ~ 80cm, hole depth is minimum is 20cm, and aperture is 25 ~ 38cm.
4. the quick formwork erection construction method of the cast-in-place wave wall of one according to claim 1, it is characterized in that: in step, described joint bar diameter is φ 12 ~ φ 28, inject grouting agent by its anchoring, the length of joint bar should make the length embedding wave wall body of wall (14) not be shorter than 40cm.
5. the quick formwork erection construction method of the cast-in-place wave wall of one according to claim 1, is characterized in that: in steph, and wave wall body of wall (14) is identical with wave wall base plate parting.
6. the quick formwork erection construction method of the cast-in-place wave wall of one according to claim 1, is characterized in that: in step e, and track adopts heavy rail, and rail spacing suitably regulates according to wave wall template gravity center shift.
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| CN110847113A (en) * | 2019-12-04 | 2020-02-28 | 杭州昂创科技有限公司 | Cast-in-place deep arc type wave wall construction method based on sliding formwork |
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| CN113699885A (en) * | 2021-05-31 | 2021-11-26 | 上海宝冶集团有限公司 | Method for erecting full-space support of cast-in-place box girder in reservoir and on dam body |
| CN113529647A (en) * | 2021-07-09 | 2021-10-22 | 上海景铭建设发展有限公司 | Construction system and construction method of concrete dyke top |
| CN114351645A (en) * | 2022-01-21 | 2022-04-15 | 广东广基建设集团有限公司 | River channel flood prevention wall structure and construction method thereof |
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