CN111764239A - Movable reference leveling method for spreading of multi-machine ladder fleet - Google Patents
Movable reference leveling method for spreading of multi-machine ladder fleet Download PDFInfo
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- CN111764239A CN111764239A CN202010602842.XA CN202010602842A CN111764239A CN 111764239 A CN111764239 A CN 111764239A CN 202010602842 A CN202010602842 A CN 202010602842A CN 111764239 A CN111764239 A CN 111764239A
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- paving
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- 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
- E01C23/01—Devices or auxiliary means for setting-out or checking the configuration of new surfacing, e.g. templates, screed or reference line supports; Applications of apparatus for measuring, indicating, or recording the surface configuration of existing surfacing, e.g. profilographs
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- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
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- Road Paving Machines (AREA)
Abstract
The invention provides a movable reference leveling method for paving a multi-machine echelon, wherein a second upright post is paved on a middle upright post datum line, namely an upright post datum line positioned between two auxiliary main lanes or between a main lane and a hard road shoulder, and is assisted with a thin wire to measure and calculate the elevation, then an aluminum alloy plate type balance beam is placed on a tray of the second upright post, the top elevation of an aluminum alloy plate is taken as the reference of the inner side of a paving layer of a front machine, the steel wire elevation is taken as the reference of the outer side of the paving layer, the second upright post and the aluminum alloy plate type balance beam erected on the inner side of the paving layer are manually removed every 5 m-10 m, a rear machine follows forward operation, an inner ironing plate of the rear machine is lapped on the paving layer for 15 cm-30 cm, the outer side of the paving layer is taken as the reference of the steel wire elevation, the removed aluminum alloy plate type balance beam. The method solves the problem of low paving efficiency in the multi-gradient paving operation process, and overcomes the influence of steel wire deflection.
Description
Technical Field
The invention relates to a road construction technology, in particular to a movable reference leveling method for multi-machine echelon paving.
Background
The existing multi-machine echelon pavement fixed datum leveling method generally adopts a line suspension method, namely a bilateral steel wire routing method to carry out elevation control datum leveling, and a method for simultaneously detecting the thickness and the flatness of a finished working surface does not exist in the leveling process.
The traditional method adopts a method for leveling the double-side suspension steel wire datum line, which is suitable for single-machine single-width operation, when double-machine or multi-machine echelon operation is adopted, after the operation of the front machine is finished, the rear machine can operate after the inner steel wire is removed (the operation of the front machine is stopped), and the rear machine is actually operated in a single machine manner, so that the mechanical working efficiency is reduced, the road surface lapping quality is influenced, and particularly, the cold seam phenomenon exists in the asphalt road surface seam, and the quality defect exists. In addition, the steel wire is difficult to move in a hanging and fixing mode, the resetting is complicated, the steel wire is fixed for a long time, the deflection of the steel wire is increased, the errors of elevation and flatness of the steel wire are increased, and the pavement paving quality is seriously influenced. In order to overcome the problem that the spreading efficiency is reduced and the deformation of steel wire deflection affects the engineering quality because a steel wire datum line is fixedly hung on two sides of a multi-machine ladder team during spreading in the prior art, the invention provides a method for controlling elevation by adopting a movable aluminum alloy plate balance beam datum leveling method, wherein a double-machine or multi-machine ladder team synchronously advances and operates, a front machine advances, an aluminum alloy plate balance beam is moved, a rear machine synchronously follows and operates, the working time is saved, the working efficiency of a machine set is improved, the cost is saved, and the quality of lap joints is improved.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a movable reference leveling method for multi-machine ladder-team paving, which improves the paving efficiency, reduces the influence of steel wire deflection and ensures the engineering quality.
In order to achieve the purpose, the invention adopts the technical scheme that: a movable reference leveling method for multi-machine echelon paving comprises the following steps:
step 1): the method comprises the steps of combining road arches and slope slopes of roadbed to perform lofting reference lines on the width of a road surface, lofting a main lane and a hard road shoulder respectively, marking outer side vertical rod reference lines and middle vertical rod reference lines on the outer sides of the main lane by 60cm, marking outer side vertical rod reference lines on the outer sides of the hard road shoulder by 50cm, adjusting the group material distribution width of a paver and the elevation angle of an ironing plate, adjusting the material distribution width of the paver to be 3-18 m, and adjusting the elevation angle of the ironing plate to be 12-15 degrees, wherein the outer side vertical rod reference lines are located on the outermost side of the road, and the middle vertical rod reference lines are located between two auxiliary main lanes or between the main lane;
step 2): arranging a vertical rod I with a bracket for the reference line of the outer vertical rod and the reference line of the middle vertical rod according to the distance of every 10-12.5 m/point; arranging a second vertical rod with a tray on the reference line of the middle vertical rod according to 4 m/point for encryption, and properly adjusting the positions of the first vertical rod and the second vertical rod in the same row during encryption so as to avoid the position conflict between the first vertical rod and the second vertical rod;
step 3): calculating the elevation by combining the transverse and longitudinal gradient, the design elevation and the loose paving thickness of a pavement layer, adding the height of an aluminum alloy plate type balance beam to the elevation of a first upright on an outer upright datum line, adding 10cm to the elevation of a first upright on a middle upright datum line, respectively performing elevation control measurement on the first upright and a second upright by adopting two precise levels, lofting by adopting one elevation control measurement, and re-measuring the elevation by one level to meet the standard requirement;
step 4): ϕ 3 mm-5 mm steel wires are erected between the upright posts I on the outer upright post datum line, one end of each steel wire is fixed by a ground anchor, the other end of each steel wire is connected with a wire tightener and tightened and fixed, the tension is 800N-1000N, and a thin wire is erected on the upright post I on the middle upright post datum line and tightened to be free of deformation;
step 5): placing an aluminum alloy plate type balance beam on a tray of the upright post II at the first section of the stroke, wherein the length of the aluminum alloy plate type balance beam is 4m, and reversely calculating the elevation of the aluminum alloy plate type balance beam and adjusting the fixed balance beam of the paver to level based on the elevation of a thin line;
step 6): performing elevation retest on the outer upright post I by adopting a precision level gauge, performing spot inspection retest on the elevation of the top of the aluminum alloy plate type balance beam, removing the upright post I and the fine wire on the datum line of the middle upright post, arranging a plurality of groups of paver in a ladder-type manner on each main lane and the hard road shoulder, and opening the hopper for paving in place;
step 7): paving on the inner side of a paving layer of the front machine by taking the top elevation of an aluminum alloy plate as a reference, paving on the outer side by taking the steel wire elevation as a reference, re-measuring the elevation, the flatness and the loose paving thickness of the paving layer every 3-5 m by using a horizontal ruler and a straight ruler, manually removing a vertical rod II and an aluminum alloy plate type balance beam erected on the inner side of the paving layer every 5-10 m after the paving layer is moved, performing forward operation by using a rear machine, overlapping the paving layer by using an inner ironing plate of the rear machine for 15-30 cm, paving on the outer side by taking the steel wire elevation as a reference, continuously paving the removed aluminum alloy plate type balance beam to the front side, repeating the step 5) -the step 7), and continuously operating, manually adjusting the leveling device of the paving machine by using the manual method to enable the.
Basically, the steel wire carries out the overlap joint through the support on the pole setting one and fixes.
Basically, the aluminum alloy plate type balance beam is an aluminum alloy square tube.
Basically, the height of the aluminum alloy plate type balance beam is 7.5 cm.
Compared with the prior art, the method has outstanding substantive characteristics and obvious progress, and particularly, the method replaces the traditional leveling method for the double-side hanging steel wire datum line, the movable aluminum alloy plate type balance beam is used for assisting the front vehicle to find the datum on the middle datum line, the aluminum alloy plate type balance beam can be paved forwards after being used, and the aluminum alloy plate type balance beam can be continuously used, so that the synchronous paving operation of the rear vehicle is not influenced, the number of the aluminum alloy plate type balance beams is saved, the investment cost is reduced, the joint quality of the lap joint is improved, and the working efficiency of a unit is improved and the cost is further reduced because the front vehicle and the rear vehicle can synchronously operate.
Drawings
Fig. 1 is a cross-sectional view of a road bed layout in the present invention.
Fig. 2 is a top view of a reticle loft in the present invention.
Fig. 3 is one of the principle diagrams of the multi-machine ladder formation paving of the present invention.
Fig. 4 is a second schematic diagram of the multi-machine ladder formation paving of the present invention.
In the figure: 1. a first vertical rod; 2. a second vertical rod; 3. an aluminum alloy plate type balance beam; 4. a steel wire; 5. outside pole setting datum line.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
Firstly, construction measurement is carried out on the road surface.
The main contents of the measurement include:
a. carrying out elevation control measurement on the roadbed longitudinal section based on each main lane and each road shoulder;
b. performing elevation control measurement at intervals of 12.5m on the cross section of the roadbed;
c. detecting and re-detecting the plane position;
d. construction lofting is carried out in the pavement paving process;
e. and (5) construction detection.
The procedure needs to be strictly controlled, the accuracy of steel wire reference leveling is seriously affected by the quality of elevation control measurement, and therefore two precise level gauges and a total station/GPS can be equipped for construction operation. The following work is done in the construction process:
before use, each instrument must be calibrated and checked to ensure that the error is within the allowable error range.
And (4) encrypting the leveling points according to the construction requirements, protecting important leveling points, and carrying out multiple times of closing detection on each leveling point to ensure that the value of each leveling point meets the precision requirement.
The detection is carried out by combining the elevation, the transverse gradient and the longitudinal gradient of the roadbed, the detection frequency is not less than 12.5m of a section, the single width of the road is not less than 4 points, and the work is finished before the construction lofting.
Second, construction lofting
Adopting a total station/GPS to loft and mark the roadbed center line, each main lane, the hard road shoulder and the side line of the working surface to be paved; the subgrade center line and the main lane are 2% of same-cross slopes, the same-cross slopes are marked at intervals of 12.5m along the width of the paving base line, the hard road shoulders and the side lines are 4% of same-cross slopes, the same-cross slopes are marked at intervals of 12.5m along the width of the paving base line, and the marks of the base line are marked by white lime after marking is finished, so that the marks of the base line are marked and laid out, as shown in the upper graph 1 and the upper graph 2.
The total station/GPS is adopted to loft the positions of the steel rods of each working surface to be paved, and marks are carried out, wherein the distance between two sides of the paving base line width of the main lane with the same gradient is 12.5m, the distance between two sides of the paving base line width of the main lane with the same gradient is 0.6m outwards, the distance between two sides of the paving base line width of the hard road shoulder with the same gradient is 12.5m, the distance between the outer side of the paving base line width of the main lane with the same gradient is 0.5m outwards, the inner side of the paving base line width of the main lane with the same gradient is the lapping working surface of the paver.
As shown in fig. 1 and fig. 3, the upright posts 1 with the brackets are arranged at the marked positions on the two sides of the roadbed center line and the outer upright post datum line, the brackets are used for fixing steel wires, the upright posts 1 are arranged at the marked points of the hard road shoulder and the base line on the inner side (multi-machine lap joint side) of each main line, meanwhile, the upright posts 2 with the trays are arranged at intervals of 4 m/point by using steel rulers, the trays are used for installing aluminum alloy plate type balance beams 3, the length of each pipe is 4 m/root, the height is 7.5cm, and particularly, the positions of the upright posts are properly adjusted during encryption so as to avoid position conflict between the upright posts 1 and the upright posts 2.
Erecting ϕ 3 mm 5mm steel wires 4 on the vertical rods 1 on the center line of the finished roadbed and the outer side vertical rod datum line 5, connecting one ends of the steel wires 4 with a steel wire rope take-up device or fixing a ground anchor, connecting the other ends of the steel wires 4 with a tightener, tightening the steel wires by using the tightener, ensuring that the stress of the reference steel wires is 800N-1000N, and keeping the steel wires in a tightened state, particularly paying attention to the fact that the steel wires are not bound to the vertical rods 1; thin lines (usually fish lines) are tied on the hard road shoulder and the upright posts 1 at the inner side of each main line, and the thin lines are tensioned to be in a tight state.
And calculating elevations (the elevation of the inner side upright rod 1 and the elevation of the outer side upright rod 1 are added with 7.5cm of the height of the aluminum alloy square tube, and in addition, the elevation of the inner side upright rod 1 is added with 10cm on the basis) by combining the transverse and longitudinal gradients, the design elevation and the paving thickness of the paving layer (the paving thickness of the paving layer of the project is 21 cm), and respectively performing elevation control measurement, lofting and repeated elevation measurement on the upright rods 1 by adopting two precise level gauges so as to enable the precision error to meet the standard requirement.
After the height retest of pole setting one 1 is accomplished, utilize the ligature silk ligature steel wire in pole setting one 1 (road bed central line and sideline), based on the fine rule height, combine the height of calculating in step (5) to carry out the height of back calculation on pole setting two 2 (3 top elevations of aluminum alloy plate formula compensating beam), adjust pole setting two, utilize the precision leveling appearance to carry out the spot check to the height of pole setting two 2 (every 6m sections detect) to ensure the accuracy of benchmark height.
Thirdly, spreading the mixture
The project construction adopts a double-machine echelon paving method to pave, as shown in figure 4, one group of paving main lines, the other group of paving hard road shoulders and a temporary slideway at a widening section. And the thickness, the elevation and the flatness are simultaneously checked in the paving process, and the basic layer and the subbase layer of the project are constructed by adopting a contact type leveling device to carry out benchmark leveling. The method comprises the following specific steps:
and removing the hard road shoulder, the first vertical rod and the thin wires thereof on the inner side of each main line, and performing elevation retest on the completed first vertical rod and the second vertical rod by adopting a precise level gauge.
The method comprises the following steps of opening multiple groups of paver hoppers (a screed plate is preheated before asphalt paving, the base layer and the bottom base layer are paved without preheating), adjusting the width of a group of paver cloth to be 12.5m, adjusting the width of another group of paver cloth to be 4.5m, simultaneously setting paver parameters according to test section data, namely adjusting the width of the paver cloth and the camber of the screed to adjust the width of the paver cloth (3 m-18 m) and the elevation angle of the screed (12-15 degrees), and setting the vibration frequency of the paver to be 15 HZ and the vibration frequency to be 8 HZ so as to meet the requirements on paving width and thickness.
The outer side of a balance beam of a paver on a main road of 12.5m is in contact with a steel wire, the inner side of the balance beam is lapped on the upper end face of an aluminum alloy plate type balance beam, the inner side of the paver on a hard road shoulder of 4.5m is lapped by adopting a slipper contact paving layer, the outer side balance beam is in contact with the steel wire, the balance beam and the slipper are manually adjusted to meet the working requirement, and the paver is ready to be in place.
The advancing speed of a front machine (12.5 m) is controlled to be 2.5 m/min-3.5 m/min, when the front machine advances for 5 m-10 m, a precision level gauge is used for measuring the elevation of a pavement layer to adjust the camber of a screed to meet the design requirement, meanwhile, a rear machine (4.5 m) is started to follow, the upright post II and an aluminum alloy plate type balance pipe erected on the inner side of the pavement layer are manually removed until the front machine is used as a pavement working face, the rear machine follows to advance, the speed is controlled to be 3m/min, the screed of the rear machine is lapped on the pavement layer for 15 cm-30 cm, the removed upright post II and the aluminum alloy square pipe continue to advance manually, the processes are repeated, and operation is continued.
In the multi-machine echelon advancing process, the outer side of a front machine (12.5 m) pavement layer takes the steel wire elevation as a reference, the inner side takes the top elevation of an aluminum alloy square tube as a reference, the flatness is detected by using a horizontal ruler every 3 m-5 m, and meanwhile, the thickness of the pavement layer is detected by using the straight ruler; and the height, the flatness and the loose pavement thickness of the pavement layer are re-measured every 5-10 m by using a horizontal ruler and a straight ruler on the outer side of the rear machine (4.5 m) by taking the steel wire height as a reference, and the balance beam of the paver is manually adjusted to level so that the pavement layer meets the design and standard requirements.
Finally, it should be noted that the above-mentioned embodiments illustrate only some of the embodiments of the invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (4)
1. A movable reference leveling method for spreading a plurality of ladders is characterized in that: the method comprises the following steps:
step 1): the method comprises the steps of combining road arches and slope slopes of roadbed to perform lofting reference lines on the width of a road surface, lofting a main lane and a hard road shoulder respectively, marking outer side vertical rod reference lines and middle vertical rod reference lines on the outer sides of the main lane by 60cm, marking outer side vertical rod reference lines on the outer sides of the hard road shoulder by 50cm, adjusting the group material distribution width of a paver and the elevation angle of an ironing plate, adjusting the material distribution width of the paver to be 3-18 m, and adjusting the elevation angle of the ironing plate to be 12-15 degrees, wherein the outer side vertical rod reference lines are located on the outermost side of the road, and the middle vertical rod reference lines are located between two auxiliary main lanes or between the main lane;
step 2): arranging a vertical rod I with a bracket for the reference line of the outer vertical rod and the reference line of the middle vertical rod according to the distance of every 10-12.5 m/point; arranging a second vertical rod with a tray on the reference line of the middle vertical rod according to 4 m/point for encryption, and properly adjusting the positions of the first vertical rod and the second vertical rod in the same row during encryption so as to avoid the position conflict between the first vertical rod and the second vertical rod;
step 3): calculating the elevation by combining the transverse and longitudinal gradient, the design elevation and the loose paving thickness of a pavement layer, adding the height of an aluminum alloy plate type balance beam to the elevation of a first upright on an outer upright datum line, adding 10cm to the elevation of a first upright on a middle upright datum line, respectively performing elevation control measurement on the first upright and a second upright by adopting two precise levels, lofting by adopting one elevation control measurement, and re-measuring the elevation by one level to meet the standard requirement;
step 4): ϕ 3 mm-5 mm steel wires are erected between the upright posts I on the outer upright post datum line, one end of each steel wire is fixed by a ground anchor, the other end of each steel wire is connected with a wire tightener and tightened and fixed, the tension is 800N-1000N, and a thin wire is erected on the upright post I on the middle upright post datum line and tightened to be free of deformation;
step 5): placing an aluminum alloy plate type balance beam on a tray of the upright post II at the first section of the stroke, wherein the length of the aluminum alloy plate type balance beam is 4m, and reversely calculating the elevation of the aluminum alloy plate type balance beam and adjusting the fixed balance beam of the paver to level based on the elevation of a thin line;
step 6): performing elevation retest on the outer upright post I by adopting a precision level gauge, performing spot inspection retest on the elevation of the top of the aluminum alloy plate type balance beam, removing the upright post I and the fine wire on the datum line of the middle upright post, arranging a plurality of groups of paver in a ladder-type manner on each main lane and the hard road shoulder, and opening the hopper for paving in place;
step 7): paving on the inner side of a paving layer of the front machine by taking the top elevation of an aluminum alloy plate as a reference, paving on the outer side by taking the steel wire elevation as a reference, re-measuring the elevation, the flatness and the loose paving thickness of the paving layer every 3-5 m by using a horizontal ruler and a straight ruler, manually removing a vertical rod II and an aluminum alloy plate type balance beam erected on the inner side of the paving layer every 5-10 m after the paving layer is moved, performing forward operation by using a rear machine, overlapping the paving layer by using an inner ironing plate of the rear machine for 15-30 cm, paving on the outer side by taking the steel wire elevation as a reference, continuously paving the removed aluminum alloy plate type balance beam to the front side, repeating the step 5) -the step 7), and continuously operating, manually adjusting the leveling device of the paving machine by using the manual method to enable the.
2. The movable reference leveling method for multi-machine echelon paving according to claim 1, wherein: the steel wire is fixed through the overlap joint of the support on the upright stanchion one.
3. The movable reference leveling method for multi-machine echelon paving according to claim 1, wherein: the aluminum alloy plate type balance beam is an aluminum alloy square tube.
4. The movable reference leveling method for multi-machine echelon paving according to claim 1, wherein: the height of the aluminum alloy plate type balance beam is 7.5 cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010602842.XA CN111764239A (en) | 2020-06-29 | 2020-06-29 | Movable reference leveling method for spreading of multi-machine ladder fleet |
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| CN202010602842.XA CN111764239A (en) | 2020-06-29 | 2020-06-29 | Movable reference leveling method for spreading of multi-machine ladder fleet |
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