CN116876288A - Curb slip form construction method - Google Patents
Curb slip form construction method Download PDFInfo
- Publication number
- CN116876288A CN116876288A CN202310884184.1A CN202310884184A CN116876288A CN 116876288 A CN116876288 A CN 116876288A CN 202310884184 A CN202310884184 A CN 202310884184A CN 116876288 A CN116876288 A CN 116876288A
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- Prior art keywords
- curb
- construction
- concrete
- machine
- slip form
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000009751 slip forming Methods 0.000 title claims description 12
- 238000010276 construction Methods 0.000 claims abstract description 44
- 238000005520 cutting process Methods 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 11
- 238000009966 trimming Methods 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000036541 health Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000001990 intravenous administration Methods 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000009415 formwork Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000004575 stone Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000002985 plastic film Substances 0.000 description 6
- 229920006255 plastic film Polymers 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Road Repair (AREA)
- Road Paving Structures (AREA)
- Road Paving Machines (AREA)
Abstract
The invention relates to the technical field of highway pavement engineering curb construction, in particular to a construction method of a curb slip form. The method comprises the steps of measuring lofting, mixing and transporting the mixture, sliding-mode paving, manual trimming and preserving and the like. The method changes the construction process of the curb stone by the one-time discharging vibration molding of the slip-form machine into the one-time molding process of 1h internal cutting maintenance of the slip-form machine discharging molding. The change of the technological method can greatly improve the work efficiency, reduce the environmental pollution of the cutting seam after curing and forming, and effectively improve the on-site overall effect of the curb.
Description
Technical Field
The invention relates to the field of road surface curb construction, in particular to a curb installation construction method.
Background
The construction method of the road stone in highway engineering controls the vast majority of construction methods adopting a slip form machine, and the process can utilize mechanized construction to form site standardized construction. However, the existing curb slip form construction method has large joint-cutting pollution in the later period and poor control of the crack in the earlier period on site.
Disclosure of Invention
The invention aims to solve the problems that the traditional curb slip form construction method is large in later-stage joint cutting pollution and poor in control of on-site earlier-stage cracks, and provides an improved curb slip form construction method for improving the working efficiency.
The invention adopts the technical proposal for solving the problems that:
the curb slip form construction method comprises the following steps of;
s1, preparing materials and equipment; designing a concrete mix ratio and slump, preparing a measuring and lofting instrument tool, and carrying out joint measurement on a measuring plane control point and an elevation control point to meet the lofting requirement;
s2, base layer treatment; after the working surface is cleaned, the working surface is always ensured to be moist;
s3, measuring and lofting; measuring and lofting after the base layer reaches the curing period, discharging the plane position of the curb by a GPS, controlling the elevation by a sliding mode machine sensor through a steel wire hanging wire, wherein the hanging wire position is 25-30cm away from the inner side edge of the curb;
s4, mixing and transporting the mixture; transporting the concrete to a construction site through a concrete tank truck;
s5, sliding-mode paving; connecting the tank truck with a slip form machine, conveying concrete to a hopper through a conveyor belt of the slip form machine, and enabling the slip form machine to walk and simultaneously enabling the concrete to enter a die for forming;
when the concrete in the storage hopper of the slip form machine reaches more than 2/3, the slip form machine can start to spread, and the normal continuous construction speed of the slip form machine is controlled to be 2.5-3m/min; cleaning the base layer after finishing paving;
s6, manually trimming; manually trimming the appearance of the curb;
s7, slitting and preserving health; and cutting the curb after manual trimming, and covering a plastic curing film on the surface of the curb for curing.
Preferably, in the step S1, the mixing ratio can be C20 common concrete, and the slump is 40-50mm.
Preferably, in step S4, slump detection is performed before the concrete is discharged; after reaching the construction site, a second slump detection is performed.
Preferably, in the paving process of the step S5, the concrete consumption speed in the storage hopper is ensured to be consistent with the concrete conveying speed of the concrete tank truck through the slipform machine conveyor belt.
Preferably, in the step S5, water is sprayed in the storage hopper of the slipform machine in advance before paving, so that the slipform machine is ensured not to absorb the water consumption in the concrete, and the slump loss of the concrete is reduced. The vibration intensity and frequency of the vibrating rod of the slip-form machine must be determined according to the field test section, so that the compaction of the curb concrete after slip-form is ensured. The slowest speed of the slip-form machine is preferably controlled to be 0.5-1m/min when the slip-form machine is started.
Preferably, in the construction process of the step S5, when concrete supply is not timely and exceeds 1h, a construction joint is needed, the whole sliding die machine is opened out of a construction area to be not less than 5m, the top surface of the terminal curb stone of a construction operator is measured for flatness of two side surfaces, and vertical joints are cut at positions where the flatness of three surfaces is less than 1mm for terminal treatment.
Preferably, in step S6, the manual dressing includes dressing the curb surface pores.
Preferably, in step S6, the manual dressing further comprises adjusting the surface moistures by draining the curb with an intravenous line.
Preferably, in step S7, an expansion joint is provided every 5m during lancing.
Preferably, in step S7, a slitting cutter with a thickness mark is used for slitting, and the slitting time is controlled within 1h after the completion of the curb slip form, and the die is formed once. The curb collapse caused by early cutting and the curb fracture caused by late cutting are avoided.
The invention advances the slitting time in the construction process of the curb slip form, and the film is covered and maintained for one-step molding, so that the change of the technological method can greatly improve the work efficiency and the overall effect of the curb site.
The traditional mode is that a toothless saw is used for cutting an expansion joint about 24 hours after the initial setting and curing of the curb concrete; by adopting the construction method disclosed by the invention, the technical difficulty of cutting in advance is overcome. The collapse condition caused by the unshaped curb concrete due to the vibration of cutting needs to be mastered, the cutting time is controlled, and the cutting is controlled to be performed within 1 hour after the completion of the sliding film. (1) Controlling the slump of the concrete site to be 40-50mm; (2) when in cutting, a kerf cutter with a cutting thickness marking is adopted, and the cutting is carried out on site according to the marking, so that the consistency of the cutting thickness is ensured, and the influence caused by inconsistent cutting thickness due to inconsistent cutting thickness can be avoided; (3) and the plastic film is covered immediately after the slotting, so that the shrinkage crack caused by the loss of water on the surface of the curb is avoided.
Drawings
FIG. 1 is a flow chart of a curb slipform construction method of the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
The highway is paved with the curb, and each block of the curb is 49cm in design length and about 49kg in weight according to the traditional prefabricated installation method. The precast block has large volume, difficult removal and low efficiency, meanwhile, the line type is not easy to control in installation, the construction efficiency is low, and the progress cannot meet the requirement of construction period.
The construction is carried out according to the curb slipform construction method disclosed by the invention, as shown in figure 1, compared with the traditional method, the construction quality of the curb is ensured, the construction cost is reduced, and the overall appearance after finishing is greatly improved. The method of the invention comprises the following steps.
S1, material and equipment preparation
The sliding mode machine arrives at the scene, the sliding mode template part is designed according to the size of the design drawing, and the equipment performance passes through the equipment part inspection; the concrete mix and corresponding slump, which in this example is C20 plain concrete, is determined by the laboratory from the field materials and is maintained at 50mm.
And preparing instruments and tools for measuring and lofting, and carrying out joint measurement on the control points of the measuring plane and the control points of the elevation to meet the lofting requirement.
S2, base layer treatment
The base layer treatment can be constructed after the construction of the water-stable upper base layer is completed and the maintenance is completed, so that the binding force between the curb and the top surface of the water-stable layer is improved, the working surface is cleaned before the curb construction, no soil sundries are generated, and water is sprayed and wetted, so that the water-stable upper base layer can be combined with the water-stable upper base layer. Cleaning a section, wetting a section and constructing a section in construction, and ensuring clean and wet working surfaces all the time;
s3, measuring and lofting
After the base layer reaches the curing period, the measuring and lofting work can be carried out. The straight line section adopts 10m one place, the curve section adopts 5m one place, the position of the curb plane is discharged through GPS, and the steel wire hanging wire is adopted to control the elevation through the sliding mode machine sensor. The position of the hanging wire is 30cm away from the inner edge of the curb. Because the elevation is finished by water stable construction and has errors, the elevation can not be measured upwards by using a tape measure, so that the phenomenon that the overall apparent effect of the curb is influenced due to abrupt points of the line type of the curb is avoided;
s4, mixing and transporting the mixture
Considering that the machine-made sand has unstable water content in different storage time and batches, the water content of the sand and stone materials is detected before daily construction, and the mixing proportion is adjusted in time. Before the concrete is discharged, slump detection is carried out, and after the concrete arrives at a construction site, slump detection is carried out. Aiming at a construction site with a long concrete conveying distance, the problem that the collapse degree of concrete is small is solved, a closed tank is easy to cause, and the collapse degree loss is fully utilized to improve the collapse degree of the concrete when the concrete is discharged. If the slump is problematic, the slump is timely communicated with the mixing station to be adjusted.
Because the construction of the curb slip form requires smaller concrete slump, in order to prevent the generation of a concrete closed tank, the discharge port blades of the concrete tank truck can be reduced to increase the caliber of the discharge port;
s5, slipform paving
Before sliding the mould, the hanging wire should be checked first, after the construction requirement is met, the positions of the sliding mould machine and the mould plate are adjusted, the mould is guaranteed to be clung to the surface of the base layer, and meanwhile the inner surface of the mould is guaranteed to be clean and free of sundries. The sensor is checked to ensure that the sensor is normal.
After the concrete tank truck arrives at the construction site, the tank truck is connected with the slip form machine, concrete is conveyed to the hopper through the self conveyor belt of the slip form machine, the concrete reaches a certain compactness through the action of the self vibrating rod of the slip form machine, and the machine walks and simultaneously makes the concrete enter the mould for forming.
When the paving is started, after the volume of the concrete in the storage hopper of the slipform machine reaches 2/3, the paving is started, the speed of the slipform machine is controlled to be 3m/min, and the slipform machine can be properly accelerated after no abnormal phenomenon exists. In order to prevent the concrete from being adhered in the template, a small amount of water is sprayed in the storage hopper of the slip-form machine in advance, so that the smoothness of starting paving is ensured.
In the paving process, the concrete consumption speed in the storage hopper is ensured to be consistent with the concrete conveying speed of the concrete tank truck through the sliding mode machine conveyor belt, and the situation of material breakage is avoided.
After the paving is finished, the base layer should be cleaned in time to ensure that the base layer is not polluted in the slipform process.
When the gap between the mould and the water stabilizing surface in the slip form process is insufficient, slurry leakage phenomenon exists at the root of the curb, and the repair is needed manually, so that the construction quality is ensured.
S6, manually trimming
After the slip form construction is finished, manually finishing the appearance of the curb, dipping the plastic film in water, and then lightly sliding the plastic film on the surface of the curb, wherein the plastic film can be removed after the curb reaches a maintenance period.
S7, slitting health preserving
When the seam is cut, a curb expansion joint is arranged every 5m, if a crack is found before the seam is cut, the seam can be directly cut at the crack, and the apparent quality of the curb is ensured.
When in lancing, a lancing cutter with a marking with a cutting thickness is adopted, and the marking is cut on site, so that the consistency of the cutting thickness is ensured, and the influence caused by inconsistent cutting thickness due to inconsistent cutting thickness can be avoided; and after the seam is cut, the plastic film is immediately covered, so that the shrinkage crack caused by water loss on the surface of the curb is avoided. And (5) curing the curb within 12 hours after molding. The newly paved kerbstone has faster water loss, so that plastic films are adopted for covering except water sprinkling and health maintenance, thereby reducing water evaporation and avoiding cracks.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Any person skilled in the art, within the scope of the present disclosure, may apply to the present invention, and equivalents and modifications may be substituted or altered by elements thereof.
Claims (10)
1. The curb slip form construction method is characterized by comprising the following steps of;
s1, preparing materials and equipment; designing a concrete mix ratio and slump, preparing a measuring and lofting instrument tool, and carrying out joint measurement on a measuring plane control point and an elevation control point to meet the lofting requirement;
s2, base layer treatment; after the working surface is cleaned, the working surface is always ensured to be moist;
s3, measuring and lofting; measuring and lofting after the base layer reaches the curing period, discharging the plane position of the curb by a GPS, controlling the elevation by a sliding mode machine sensor through a steel wire hanging wire, wherein the hanging wire position is 25-30cm away from the inner side edge of the curb;
s4, mixing and transporting the mixture; transporting the concrete to a construction site through a concrete tank truck;
s5, sliding-mode paving; connecting the tank truck with a slip form machine, conveying concrete to a hopper through a conveyor belt of the slip form machine, and enabling the slip form machine to walk and simultaneously enabling the concrete to enter a die for forming;
when the concrete in the storage hopper of the slip form machine reaches more than 2/3, the slip form machine can start to spread, and the normal continuous construction speed of the slip form machine is controlled to be 2.5-3m/min; cleaning the base layer after finishing paving;
s6, manually trimming; manually trimming the appearance of the curb;
s7, slitting and preserving health; and cutting the curb after manual trimming, and covering a plastic curing film on the surface of the curb for curing.
2. The method for constructing a sliding kerb formwork according to claim 1, wherein in the step S1, the mixing ratio is C20 plain concrete, and the slump is 40-50mm.
3. The method for constructing a curb slipform according to claim 1, wherein in step S4, slump detection is performed before the concrete is discharged; after reaching the construction site, a second slump detection is performed.
4. The method for constructing the sliding form of the curb according to claim 1, wherein the concrete consumption speed in the storage hopper is ensured to be consistent with the concrete conveying speed of the concrete tank truck through the conveyor belt of the sliding form machine in the paving process of the step S5.
5. The method for slipform construction of kerb according to claim 1, wherein in step S5, water is sprayed in advance in the storage hopper of the slipform machine before paving, and the slowest speed of the slipform machine is preferably controlled to be 0.5-1m/min when the slipform machine is started.
6. The construction method of the curb slipform according to any one of claims 1-5, wherein the construction joint is to be made when the concrete is not supplied timely and exceeds 1h in the construction process of step S5, the slipform machine is integrally opened out of the construction area by not less than 5m, the flatness of the top surface and two side surfaces of the curb at the end of the construction operator is measured, and the vertical joint is cut at the position where the flatness of the three surfaces is less than 1mm for the end treatment.
7. The curb slipform construction method as claimed in claim 1, wherein the manual finishing comprises finishing the curb surface pores in step S6.
8. The method of construction of a curb slip form according to claim 1 or 7, wherein in step S6, the manual finishing further comprises adjusting surface moistures by draining water on the curb with an intravenous line.
9. The method for constructing a sliding kerb form according to claim 1, wherein in the step S7, an expansion joint is provided every 5m during the slitting.
10. The construction method of the curb slip form according to claim 1 or 9, wherein in the step S7, a slitting cutter with a thickness mark is used for slitting, and the slitting time is controlled within 1h after the completion of the curb slip form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310884184.1A CN116876288A (en) | 2023-07-19 | 2023-07-19 | Curb slip form construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310884184.1A CN116876288A (en) | 2023-07-19 | 2023-07-19 | Curb slip form construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116876288A true CN116876288A (en) | 2023-10-13 |
Family
ID=88267630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310884184.1A Pending CN116876288A (en) | 2023-07-19 | 2023-07-19 | Curb slip form construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116876288A (en) |
-
2023
- 2023-07-19 CN CN202310884184.1A patent/CN116876288A/en active Pending
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