CN102828453A - Stamping reinforcement method of weak rolling area of roadbed and application thereof - Google Patents
Stamping reinforcement method of weak rolling area of roadbed and application thereof Download PDFInfo
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- CN102828453A CN102828453A CN2012103443549A CN201210344354A CN102828453A CN 102828453 A CN102828453 A CN 102828453A CN 2012103443549 A CN2012103443549 A CN 2012103443549A CN 201210344354 A CN201210344354 A CN 201210344354A CN 102828453 A CN102828453 A CN 102828453A
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Abstract
The invention provides a stamping reinforcement method of a weak rolling area of a roadbed and an application of the stamping reinforcement method of the weak rolling area of the roadbed. A high speed stamping reinforcement device-stamping rammer compactor is used, and a stamping pounder is lifted in a hydraulic or mechanical manner to punch a tamping plate with a buffer gasket for conducting stamping reinforcement on the weak rolling area of the roadbed which is normally rolled. An application of the stamping reinforcement method of the weak rolling area is further provided for the weak rolling area of the roadbed of a compact road rolled normally. Stamping reinforcement is carried out on junction of new and old roadbeds when the old road is widened, base of the roadbed newly widened, and newly filled roadbeds. Stamping reinforcement is carried out on a roadbed structure base and the weak rolling area of the roadbed of the compact railway rolled normally. Stamping reinforcement is carried out on water damage treatment of roadbeds of roads and railways. Stamping reinforcement is carried out on reinforcing the weak rolling area of river dams and brake back backfill water conservancy projects. The stamping reinforcement method of the weak rolling area of the roadbed provided by the invention has the beneficial effects that the backfill compactness of the weak rolling area of the roadbed is improved, the bearing capacity of the roadbed is improved, post-construction settlement of the weak rolling area is reduced, the project quality is effectively improved, the project expenses are saved, and the economical benefits are remarkable.
Description
Technical field
The present invention rolls district's punching press reinforcement and application thereof a little less than a kind of roadbed, a little less than improving roadbed, roll district's compactness and roadbed supporting capacity, rolls district's settlement after construction a little less than effectively reducing roadbed.
Background technology
Along with the development that present domestic advanced road is built,, have higher requirement to the surface evenness of road, the whole integrity on road surface etc.
Fill some special areas of compacting operation at road foundation: the works of road and the overlapping part of roadbed, the fringe region that rolls, other rolls limited narrow and small zone, workspace.The large-scale compacting machinary that uses at present: road roller, impact roller etc., receive the restriction in works and effective operation district, can't play one's part to the full; Existing small-sized compacting equipment can't reach desired compacting intensity again, because the compacting strength deficiency, rolls the district a little less than having formed many roadbeds.
It is more to roll district's kind a little less than the roadbed.Roll the existence in district a little less than the road foundation, caused many road diseases." partly fill out partly and dig " construction section in mountain road is built because filling roadbed rolling operation is not enough, occurs filling out and digs district's settlement of subgrade, causes the cracking of road; The excessive sedimentation of roadbed bridges and culverts structure back filling behind abutment, " bumping at bridge-head " when causing operation; The differential settlement of new and old road overlap joint after a period of time that causes being open to traffic, the fracture of step and road structure occurs, the destruction in advance that causes road in junction, new and old road.These problems are perplexing construction, the maintenance department of road and bridge for many years always, badly influence road, especially the quantity of operation of high-grade highway.
Distinguish in the common road disease that causes to roll a little less than the roadbed, comparatively typical bridges and culverts back filling behind abutment is an example at present.The immediate cause of bumping at bridge-head is the settlement difference of bridges and culverts abutment body and embankment.Bridge, culvert platform are the rigid construction things in the roadbed, and generally all there is pile foundation its underpart, thereby the distortion and the sedimentation of the back axle that is open to traffic, culvert are very little; And the backfilling material of abutment and the adjacent junction of roadbed is because the abutment effect on structure can't adopt large-scale compacting machinary to carry out effective compacting.The backfill body of back filling behind abutment will produce bigger sedimentation and deformation under the operation load action, causes the settling ratio abutment of approach embankment big, has caused the relative settlement of the bridges and culverts platform back of the body with back filling behind abutment.
The excessive relative settlement of the bridges and culverts platform back of the body causes that the unexpected jump of vehicle is gone, and when the speed of a motor vehicle during greater than 60km/h, will badly influence occupant's the comfort and the traffic safety of vehicle.
Along with developing rapidly of domestic speedway in recent years, roll the improvement of district's disease a little less than the roadbed, be extremely urgent problem.Administer bumping at bridge-head, the method for domestic present employing mainly is to adopt the novel backfilling material of the less and lightweight of compression sedimentation in bridge back filling behind abutment district, mainly contains:
1) adopt the haydite fly ash concrete to carry out the bridges and culverts back filling behind abutment;
2) (polystyrene foam (expanded polystyrenc is called for short EPS) carries out the bridges and culverts back filling behind abutment to the EPS light weight concrete construction;
3) adopt GSZ, geotechnical grid to add fly ash concrete and carry out the bridges and culverts back filling behind abutment.
Adopt novel backfilling material that the cost of back filling behind abutment is improved greatly, above-mentioned new back filling behind abutment material need increase cost of materials 190-340 unit/cubic meter.
The construction costs of back filling behind abutment such as GSZ, geotechnical grid method is higher, the construction technology more complicated.Be connected with caring for of the platform back of the body like GSZ (chamber), unit in charge of construction is difficult to press fully design operation under many situation.
Adopt EPS light weight concrete construction (polystyrene foam (expanded polystyrenc; Abbreviation EPS) carries out the bridges and culverts back filling behind abutment; Construction costs is higher, needs special equipment and professional construction troop, and white pollution and chemical contamination source that the EPS light weight concrete construction causes have occurred.
How to solve and roll district's local reinforcement a little less than the road and handle a difficult problem, the present invention at first proposes to grind and seeks a kind of punching press reinforcement machinery; The requirement of equipment is: flexible, efficient, safety.
Be exactly to require this equipment can drive to that large-scale rolling compaction machine can't go and operation is carried out in the zone of carrying out work flexibly;
Efficiently be exactly to require equipment to have powerful local assault power, its punching press intensity should be between impact road roller and strong the rammer, and impact force must be far longer than the small-sized tamping apparatus such as a kind of ramming machine of present use;
Safety is exactly to require equipment to have effective, regulatable impact control ability, when carrying out required punching press reinforcement, can also guarantee the safety of existing roadbed structure effectively.
Summary of the invention
For solving the problem that exists in the above-mentioned engineering, the present invention has adopted has controlled impact force, and has the punching press rammer compacter of cushion pad tamping plate, utilizes the flexibility of equipment, rolls the district a little less than moving to the roadbed that other large-scale compacting machinary can't effectively work.Before the road surface structare layer construction, carry out the punching press reinforcement to rolling the zone a little less than the roadbed.Provide between traditional strong tamping technology and traditional roadbed and successively rolled district's punching press reinforcement and technical application a little less than a kind of roadbed between the rolling technique.
For realizing above-mentioned purpose; The technical scheme that the present invention adopts rolls district's punching press reinforcement a little less than providing a kind of roadbed; Adopt hydraulic pressure or mechanical system to promote the punching press hammer ram; Impact has the high speed stamping reinforcement equipment-punching press rammer compacter of cushion pad tamping plate, carries out the punching press reinforcement to rolling the zone a little less than the roadbed behind the normal construction; This method includes following steps:
1) according to different working conditions, selected punching press reinforcement equipment
For generally banket, rock-filling embankment, select HB-30 punching press rammer compacter for use, hammer ram weight is 3000kg; Hoisting depth is 0.6-1.2m, and impact energy is 18-36KJ, and the punching press frequency can reach 20-36 time/minute; For high rock-filling embankment, can select the punching press rammer compacter of greater impact energy for use, hammer ram weight is 5000kg; Hoisting depth h is 0.6-1.2m, and impact energy is 30-60KJ, and the punching press frequency can reach 16-30 time/minute;
2), formulate punching press reinforcement technology according to on-the-spot different working conditions
According to rolling district's form a little less than the different roadbed in scene; A little less than the roadbed behind the normal roller compaction construction, roll the district; According to rolling district adjacent bridges and culverts, supporting construction form of structure a little less than the roadbed roadbed, the kind of roadbed filling, take into full account the influence of impact force to the works structural safety; The construction safety that tamping plate layout, tamping plate Edge Distance roadbed have built up structure during from the single-point stamping press number of times of the best, stamping press rolls the punching press reinforcement technology in district apart from several respects a little less than the selected roadbed;
3) different structure is kept different punching press construction safety distances: adopting hammer ram weight is 1000-5000kg; Hoisting depth is the punching press rammer compacter of 0.6-5m, and the construction safety that rolls structure edges such as the adjacent bridges and culverts in district, retaining wall a little less than the punching press rammer compacter tamping plate Edge Distance roadbed is 30cm-80cm apart from S;
4) different working conditions adopts different punching press reinforcement single-point operation hammer numbers: roll the district to the kind of different roadbed filler, a little less than dissimilar, on-the-spot examination is rammed and is confirmed punching press reinforcement single-point operation hammer number.To rolling the zone a little less than the roadbed that normally rolls compacting, adopt the punching press rammer compacter to try punching press, examination punching press number of times is 3-18 hammers; Per three hammer observations once when three hammer settling amounts less than 10mm into shape, can be confirmed accumulative total punching press number of times before, are this highway section punching press reinforcement single-point operation number of times that should take;
5) different working conditions adopts different stamping press tamping plate spacings: to rolling the district a little less than the dissimilar roadbeds, adopt different tamping plate spacings to tamp, the tamping plate spacing during the punching press reinforcing construction should be adjusted between 100cm-150cm;
6) through the punching press reinforcement, a little less than the roadbed behind the normal construction, roll in the zone, form depth 1-2m through punching press, compactness can reach the coniform earth pillar more than 95%.
The application that rolls punching press reinforcement in district's a little less than the multiple roadbed is provided simultaneously, and this method is applied to: the punching press reinforcement is carried out through rolling the district a little less than the road foundation that normally rolls compacting in (1); The punching press reinforcement on the basis of new and old roadbed lap-joint and the roadbed newly widened when (2) old road is widened, to the new filling roadbed repeatedly punching press reinforcement of in the process of filling, implementing; (3) roadbed structure basis punching press reinforcement; (4) through rolling the punching press reinforcement in district a little less than the railway bed that normally rolls compacting; (5) highway, railway bed damaged or destroyed by flood are handled; (6) roll the consolidation process in district a little less than river dyke, the lock back of the body backfill hydraulic engineering.
Effect of the present invention is to roll punching press reinforcement technology in district's a little less than adopting, and has improved the backfill body compactness that rolls the district a little less than the road, rolls the settlement after construction in district a little less than having reduced, and has effectively improved workmanship, has saved engineering cost greatly, and economic benefit is obvious.
1, this method still adopts traditional natural stuffing, rubble, gravel, rendzinas etc. is arranged as the roadbed backfilling material.Containing polystyrene foam (EPS) light weight concrete construction with employing carries out the bridges and culverts back filling behind abutment and compares: roll district's punching press reinforcement technology a little less than the road and adopt natural stuffing to avoid white pollution and chemical contamination.
2, carry out the filler cost relatively with this method and other novel backfilling material method of employing, only backfilling material is one, can save construction costs more than 75%.
3, the application of this method in highway construction will significantly reduce and eliminate common road disease.Prolong the laundering period of highway operation effectively, improve the highway operation quality, reduce vehicle operating cost, improve the communications and transportation environment greatly.
4, adopt this method, job practices is easy, and technology is reliable, and effect is obvious, can improve engineering construction speed greatly.Roll punching press reinforcement technology in district's a little less than the road and add fly ash concrete and the comparison of EPS light weight concrete construction back filling behind abutment efficiency of construction with GSZ, geotechnical grid; Have clear superiority: GSZ, geotechnical grid method are carried out back filling behind abutment; Construction technology is complicated; Unit in charge of construction is difficult to press fully design operation, as being connected with caring for of carrying on the back of platform etc.EPS light weight concrete construction back filling behind abutment needs to adopt special-purpose EPS light weight concrete construction, the professional equipment operation.Adopt this method, still use original natural soil, stone to be backfilling material, material can be gathered materials on the spot, and has significantly reduced the material allocation and transportation time; The operation backfill efficient of the punching press rammer compacter that uses is according to different work gear, slightly different.Like HB-30 punching press rammer compacter, hammer ram weight is 3000kg, and hoisting depth is 0.6-1.2m.The punching press frequency can reach 20-36 time/minute.When adopting hoisting depth 1.2m, single-point operation 6 hammers, tamping plate spacing 150cm operation, the operation in 30 minutes of on-the-spot practical measurement 57 settings, working area reaches 132m
2Calculate with this, a press was worked 8 hours every day, and the reinforcement area is 2112m
2/ day, be about the back filling behind abutment punching press reinforcement operation area of two bridges and culverts, have higher efficiency of construction.
The raising of 5, road construction quality with the curing period that prolongs road, reduces maintenance costs, improves quantity of operation.
Description of drawings
Fig. 1 is a punching press reinforcement principle schematic of the present invention;
Fig. 2 confirms punching press reinforcement operation single-point punching press number of times sketch map for examination punching press settling amount of the present invention;
Fig. 3 is that tamping plate of the present invention is by interval S punching press reinforcement arrangement diagram;
Fig. 4 be between punching press tamping plate of the present invention and works construction safety apart from sketch map.
Among the figure:
Hammer ram 2. have cushion pad tamping plate h. hammer ram draw high that coniform earth pillar 6. punching presses that stroke 5. punching presses influence back forms form a little less than roll the plane that the district forces to roll a little less than the sedimentation B. tamping plate spacing 7. district adjacent structure thing S. safe distance 8. punching machine tamping plates
The specific embodiment
Roll district's punching press reinforcement a little less than to roadbed of the present invention and use and explain in conjunction with accompanying drawing and embodiment.
Fig. 1 is a punching press reinforcement principle schematic of the present invention, the operating principle of the clear punching press reinforcement machinery of this chart.Fig. 2 confirms punching press reinforcement operation single-point punching press number of times sketch map for examination punching press settling amount of the present invention, has shown the curve of the settling amount that is produced by the examination punching press, less than 10mm, confirms punching press reinforcement operation single-point punching press number of times with three hammer sedimentations.Fig. 3 is a tamping plate interval S punching press reinforcement arrangement diagram of the present invention, indicates diameter 100cm punching press reinforcement machinery tamping plate by interval S, the tamping plate layout sketch map of punching press reinforcing construction.Fig. 4 be between punching press tamping plate of the present invention and works construction safety apart from the S sketch map, in order to guarantee the original structure of roadbed not because of the impact of punching press reinforcing construction receives structural destruction, the parados of the tamping plate edge of press and bridge, culvert, passage; Should keep S construction safety distance far away between the supporting construction parados such as tamping plate edge and retaining wall.
Roll punching press reinforcement in district's a little less than the roadbed of the present invention,, utilize high speed stamping reinforcement equipment HB-30 punching press rammer compacter in the speedway job site; As shown in Figure 1; Adopt the punching press hammer ram 1 of hydraulic way lifting 3000kg, be promoted to the height of h=1.2m, impact the tamping plate 2 that has cushion pad; Carry out the punching press reinforcement to rolling the zone a little less than behind the normal construction, through the reinforcement punching press form a little less than roll the district and force sedimentation 6; This method includes following steps:
1), confirms to roll a little less than the difference punching press reinforcement technology in district based on on-the-spot different working conditions
According to rolling district's different structural forms a little less than the on-the-spot roadbed; A little less than the roadbed behind the normal construction, roll the district; The several aspects of pitch arrangement of tamping plate during to the number of times of the influence of the structural safety of structures such as adjacent bridges and culverts, barricade, single-point operation punching press, stamping press are selected to rolling the punching press reinforcing construction technology in district a little less than this during from the punching press reinforcing construction;
2) to the different roadbed structure; Need the different punching press construction safety distance of maintenance: adopting hammer ram 1 weight is 3000kg; Hoisting depth h is the HB-30 punching press rammer compacter of 1.2m; Punching press rammer compacter tamping plate edge, distance is with weak to roll the safe distance S that rolls district's adjacent structure thing 7 and plane 8 constructions of punching machine tamping plate a little less than the adjacent bridge in district, culvert, the passage wall body etc. be 30cm-50cm, and is as shown in Figure 4.
3) different working conditions adopts different punching press reinforcement single-point operation hammer numbers: roll the district a little less than the roadbed to dissimilar, different filling kinds, the scene is tried to ram and is confirmed this highway section punching press reinforcement single-point operation number of times.To normally roll compacting a little less than roll the district, adopt the punching press rammer compacter to try the punching press reinforcement, examination punching press number of times is 3-18 hammers; Per three hammer observations once when three hammer settling amounts less than 10mm into shape, can be confirmed accumulative total punching press number of times before, and are for this highway section punching press reinforcement single-point operation number of times that should take, as shown in Figure 2.
4) different operating modes adopt different stamping press tamping plate spacings: to rolling the district a little less than the dissimilar roadbeds, adopt different tamping plate spacings to carry out the punching press reinforcement, the tamping plate spacing B during the punching press reinforcing construction can adjust between 100cm-150cm, and is as shown in Figure 3.
5) through the punching press reinforcement; A little less than the roadbed behind the normal construction, roll in the district, form depth 1-2m by punching press, compactness can reach the coniform earth pillar 5 that the punching press influence back more than 95% forms; And form that the above punching press of 10cm forms a little less than roll the district and force sedimentation 6, as shown in Figure 1.
Roll district's punching press reinforcement range of application a little less than the roadbed of the present invention: (1) punching press reinforcement technology is applicable to the square roadbed reinforcement of high fill (stone) of newly-built urban road, each standard highway; The reinforcement of structure such as bridges and culverts, passage back filling behind abutment, supporting construction back filling behind abutment.(2) new and old roadbed lap-joint punching press reinforcement improves newly-built road foundation filler compactness, reduces the settlement after construction of newly-built road foundation.(3) the punching press reinforcement of roadbed structure basic part can improve the compactness and the bearing capacity on basis.(4) can be applicable to the damaged or destroyed by flood reparation and the road and bridge maintenance project of traffic road.(5) can be widely used in building foundation engineering, railway engineering, hydraulic engineering.(6) in natural calamity, the war, the quick repairing of road, airport damage.
1, rolls punching press reinforcement embodiment in district's a little less than the roadbed
It is more to roll district's kind a little less than the roadbed, has the high embankment cubic meter of stone, the high embankment earthwork, the gravity water wheel platform back of the body, the light-weight abutment platform back of the body, the backfill of gravity barricade, the backfill of counter weight type barricade etc. multi-form.Be example only with bridges and culverts back filling behind abutment punching press reinforcement:
1) according to on-the-spot different roadbed structure: the structure types of abutment, barricade wall body, platform back of the body filling kind, selected suitable punching press reinforcement technology.
2) keep different punching press construction distances to different structure: gravity structure, it is heavy by 1 to adopt 3000kg to hammer into shape, and hammer rising stroke h is the punching press rammer compacter of 1.2m, and it is 30cm that the punching press distance remains on apart from the safe distance S of bridges and culverts platform back of the body construction; Structures such as light-weight abutment, gravity barricade, construction safety is 50cm apart from S.
3) different working conditions adopts different stamping press hammer numbers: to rolling the district a little less than the dissimilar roads, ram through the scene examination, per 3 hammer observations once.For rolling the district a little less than the backfill of rockfilling, adopt hammer ram 1 heavy for the 3000kg hammer, hammer rising stroke h is 1.2m, the punching press energy is the punching press rammer compacter of 36KJ.When 3 hammer settling amounts less than 10mm into shape, this highway section punching press reinforcement single-point operation number of times of the accumulative total punching press number of times before can confirming for taking; For example: the on-the-spot settling amount of 3 hammers is 11mm during the 10-12 hammer, and the on-the-spot settling amount of 3 hammers is 6.6mm during the 13-15 hammer, 12 these highway section single-point stamping press number of times for taking of the accumulative total punching press number of times before can confirming.Single-point punching press reinforcement punching press number of times generally is chosen as 6 hammers, 9 hammers, 12 hammers, 15 hammers.
4) different working conditions adopts different tamping plate spacings: to rolling the district a little less than the dissimilar roadbeds, the backfill filling kind of use adopts different tamping plate spacings to tamp, and the tamping plate spacing B of punching press reinforcing construction adjusts between 100cm-150cm.Through the punching press reinforcement, roll district's compactness a little less than having improved roadbed; Roll the area carrier ability a little less than having strengthened, effectively reduced settlement after construction.
5) with present traditional natural stuffing, rubble, gravel, rendzinas etc. are done filler, and the filler unit price is by 60 yuan of/cubic metre calculating, and each bridges and culverts platform is carried on the back about about 15.12 ten thousand yuan of average cost.If adopt methods such as EPS light weight concrete construction, GSZ, geotechnical grid, the filler unit price is by 250-400 yuan/cubic metres of calculating, and each bridges and culverts platform is carried on the back about 63-85.68 ten thousand yuan of average costs.
That has rolled district's punching press reinforcement technology a little less than the overall application roadbed holds 303 passages of (moral)-red (peak) speedway and culvert, 118 big jackshafts and five interchanges at present; If adopt technological backfills such as EPS light weight concrete construction, GSZ, geotechnical grid, it is 20396.88-34639.88 ten thousand yuan that total needs to increase the direct expense of project use.Roll district's punching press reinforcement technology a little less than adopting roadbed at present, still use former design filler, having dropped into the reinforcement expense completely is 1,500,000 yuan.Improve workmanship, saved construction investment.
2, adopt and to roll the road foundation of newly widening that punching press reinforcement in district's widens in the engineering old road a little less than the roadbed of the present invention and carry out the punching press reinforcement: (1) the roadbed basis accomplish roll before filling out normally after; Adopt hammer 1 weight 3000kg; Hammer high-stroke h is the punching press rammer compacter of 1.2m; Impact has the diameter 100cm tamping plate of cushion pad, and carrying out tamping plate spacing B is the roadbed basis punching press reinforcement of 1.5m, can make the roadbed basis produce the above sedimentation of 10cm; Through the punching press influence, in the roadbed basis, form depth 1-2m, compactness can reach the coniform earth pillar 5 that the punching press influence back more than 95% forms, and fully improves the roadbed foundation bearing capacity; (2) in newly widening the subgrade construction process, per three to five layers, after normal placement grinding operation is accomplished; To newly widening roadbed, adopt and roll punching press reinforcement in district's a little less than of the present invention, adopting hammer 1 weight is 3000kg; Hammer high-stroke h is the punching press rammer compacter of 1.2m, and carrying out the tamping plate interval S is the punching press reinforcement of 1.5m, makes and newly fills out the above punching press sedimentation of the local 10cm of generation of roadbed; And forming depth 1-2m, the punching press that compactness can reach the highly dense solidity punching press influence back formation more than 95% influences the coniform earth pillar 5 that the back forms, and can improve new filling roadbed compactness and bearing capacity; Effectively reduce the settlement after construction of newly-built roadbed, dwindle the relative settlement of new and old roadbed.
3, adopt and to roll district's punching press reinforcement a little less than of the present invention, carry out the punching press reinforcement of roadbed structure basic part.Structures such as the bridges and culverts in the subgrade construction, passage, retaining wall; When adopting natural expansion foundation, roll district's punching press reinforcement a little less than of the present invention foundation bed is carried out reinforcing through adopting, can be below natural expansion foundation; Form depth 1-2m; Compactness can reach the coniform highly dense solidity earth pillar more than 95%, increases the compactness of the soil body, improves the works foundation bearing capacity.
4, adopt and to roll punching press reinforcement in district's a little less than of the present invention the damaged or destroyed by flood highway section of traffic road roadbed is repaired and maintenance fast, if the coombe and the damaged or destroyed by flood in part highway section that form for local scour are other machinery of employing; Can't carry out effective compacting to the coombe that local scour forms; The frog rammer that adopts at present, equipment punching presses such as gasoline hammer are because the punching press energy is little; Can't make the reparation roadbed reach desired compactness; Adopt and roll punching press reinforcement in district's a little less than of the present invention and cooperate other positive appliances and compacting machinary, can high-quality quick reparation damaged or destroyed by flood roadbed, and obtain than roadbed compactness higher before the damaged or destroyed by flood.
5, adopt and to roll district's punching press reinforcement a little less than of the present invention and be used for the railway bed construction: be applicable to the punching press reinforcement that rolls the district a little less than the railway beds such as back filling behind abutment, high-fill roadbed of the backfill of the barricade wall back of the body, bridge, culvert, the passage of railway bed, railway bed damaged or destroyed by flood processing etc.Adopt hammer 1 heavy 3000kg; Hammer high-stroke h is 1.2m, impacts the 100cm tamping plate that has cushion pad, carries out tamping plate spacing B and be the punching press reinforcement of 1.5m or 1.2m, 1m spacing; Can make the railway bed after the normally compacting produce the above sedimentation of average 10cm; And by forming depth 1-2m after the punching press influence, packing can reach the coniform earth pillar 5 of highly dense solidity more than 95%, and effectively railway bed packing and bearing capacity are newly filled in raising; In view of the standard and the requirement of railway bed, can in the 1-5T scope, adjust the weight of hammer ram 1, adjustment punching press hammer ram stroke h can obtain better punching press reinforcing effect between 0.6-5m.
Repair for the railway bed damaged or destroyed by flood,, adopt existing method, can't carry out effective compacting the coombe that local scour forms for the coombe of local scour formation and the damaged or destroyed by flood in part highway section.The frog rammer that adopts at present; Pressing equipments such as gasoline hammer because the punching press energy is little, can't make the reparation roadbed return to desirable compactness; Adopt and roll district's punching press reinforcement a little less than of the present invention; Other positive appliances and compacting machinary of mechanical engagement can high-quality quick reparation railway damaged or destroyed by flood roadbed, after local the reparation, reach than damaged or destroyed by flood before higher roadbed compactness.
6, adopt and to roll district's punching press reinforcement a little less than of the present invention, in the construction of soil property dykes and dams, when whenever filling about 1m height, to filling dam body, adopting hammer ram stroke h is 1.2m.Hammering 1 weight into shape is 3000kg; Impact has the 100cm tamping plate of cushion pad 2, carries out the punching press reinforcement that tamping plate spacing B is 1.2m, 1.5m, can make the dykes and dams after the normally compacting produce the above sedimentation of average 10cm; And in dam body, form depth 1-2m; Compactness can reach the coniform coniform earth pillar 5 that is formed by punching press influence back more than 95%, and the existence of the dykes and dams middle-high density soil body is with the banket erosion resistibility of dykes and dams of raising; Can effectively solve the problem of soil property dykes and dams " middle real side is empty, excess in the upper and deficiency in the lower ";
Bridges and culverts, the backfill of the lock back of the body are difficult problems that exists in the water conservancy construction, and large-scale rolling apparatus can't effectively roll compacting near structures such as the sluice that has built up, bridge, culverts.Roll punching press reinforcement in district's a little less than of the present invention; Can be used for water conservancy dykes and dams bridge, culvert, the backfill of the lock back of the body a little less than roll district's punching press reinforcement and handle: adopt hammer 1 heavy 3000kg, hammer high-stroke h is 1.2m, impacts the tamping plate that has cushion pad; Be 30-80cm apart from lock back of the body safe distance S; Carry out tamping plate spacing B and be the punching press reinforcement of 1.5m or 1.2m, 1m spacing, can make water conservancy dykes and dams bridge after the normally compacting, culvert, the backfill of the lock back of the body a little less than roll the district and produce the above sedimentation of average 10cm, and punching press influence back forms depth 1-2m; Compactness can reach the coniform earth pillar 5 of highly dense solidity more than 95%, effectively improves the compactness of culvert, the backfill of the lock back of the body; Adopt and roll punching press reinforcement in district's a little less than of the present invention, can solve thoroughly that the various dykes and dams that exist in the water conservancy construction are carried on the back with lock, bridges and culverts back filling behind abutment place and dykes and dams edge a little less than roll a difficult problem; Cooperate other water conservancy construction machinery, roll district's punching press reinforcement a little less than of the present invention, can be applicable to block the piping dangerous situation that occurred and the quick repairing of dykes and dams.
Claims (2)
1. roll punching press reinforcement in district's a little less than the roadbed, utilize high speed stamping reinforcement equipment-punching press rammer compacter, adopt hydraulic pressure or mechanical system to promote the punching press hammer ram, impact the tamping plate that has cushion pad, carry out the punching press reinforcement rolling the zone a little less than behind the normal construction; This method includes following steps:
1) according to on-the-spot different working conditions, selected punching press reinforcement single-point operation number of times
According to the different situations that roll the district a little less than the on-the-spot roadbed, a little less than through the roadbed behind the roller compaction construction, roll the district, adopt the punching press rammer compacter to try the punching press reinforcement, the examination punching press of 1-3 point is carried out in each zone; Examination punching press number of times is 3-18 hammers; Per three hammer observations once, when three hammer settling amounts less than 10mm, the accumulative total punching press number of times before can confirming is the selected highway section punching press reinforcement single-point operation number of times that should take;
2) need keep different punching press construction safety distances to the different roadbed works: adopting hammer ram weight is 1000-5000kg; Hoisting depth is the punching press rammer compacter of 0.6-5m, and the construction safety distance that rolls the adjacent structure in district a little less than the punching press rammer compacter tamping plate Edge Distance roadbed is 30cm-80cm;
3) different working conditions adopts different stamping press tamping plate spacings: to rolling the district a little less than the dissimilar roadbeds, adopt different tamping plate spacings to tamp, the tamping plate spacing during the punching press reinforcing construction is adjusted between 100cm-150cm;
4) through the punching press reinforcement, a little less than the roadbed behind the normal construction, roll in the district, form depth 1-2m after the punching press, compactness can reach the coniform highly dense solidity earth pillar more than 95%.
2. roll the application of district's punching press reinforcement a little less than the roadbed, be applied to rolling punching press reinforcement in district's a little less than the described roadbed of claim 1: (1) is through rolling the punching press reinforcement in district a little less than the road foundation that normally rolls compacting; The punching press reinforcement on the basis of new and old roadbed lap-joint and the roadbed newly widened when (2) old road is widened, in new filling roadbed work progress, implement the punching press reinforcement; (3) to the punching press reinforcement of roadbed structure basis; (4) to distinguishing the punching press reinforcement through rolling a little less than the railway bed that normally rolls compacting; (5) highway, railway bed damaged or destroyed by flood are handled; (6) roll the punching press consolidation process in district a little less than the hydraulic engineering such as river dyke, lock back of the body backfill.
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Application publication date: 20121219 |