CN108625262B - Stud and construction method for fine adjustment of lifting height of pavement formwork of stud - Google Patents
Stud and construction method for fine adjustment of lifting height of pavement formwork of stud Download PDFInfo
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- CN108625262B CN108625262B CN201810608840.4A CN201810608840A CN108625262B CN 108625262 B CN108625262 B CN 108625262B CN 201810608840 A CN201810608840 A CN 201810608840A CN 108625262 B CN108625262 B CN 108625262B
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- pavement
- formwork
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- stud
- fixing
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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
- E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
- E01C19/502—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes
Abstract
The invention relates to the technical field of road construction, and discloses a stud structure and a construction method for finely adjusting the lifting height of a pavement template thereof.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a construction method for finely adjusting the lifting height of a pavement template.
Background
With the great development of highway construction in China, the construction method and the construction progress of the pavement engineering are one of key control factors meeting the requirement of the highway construction, and in order to meet the requirements of actual geographic conditions and operation environments, particularly in narrow operation environments of factory roads and field level roads, the construction conditions have large differences, and construction units must continuously innovate in the construction technology to meet the design requirements.
The process flow of concrete pavement construction is as follows: measuring and paying off → template making and installing → concrete mixing, transporting → reinforcing steel bar installing, concrete paving, seam construction → concrete vibrating, leveling → concrete plastering, compacting → joint cutting, joint cleaning, joint pouring → curing. The conventional template is manufactured and installed, firstly, the measurement and the setting are carried out, and the center line and the side line of the road are released according to the design file and the pile crossing data. Besides a center line pile is arranged on the road center line every 20m, center line piles are arranged at the positions of expansion joints, curve start-end points and longitudinal slope turning points, and side piles are arranged at corresponding positions on two sides of the center line piles. The main control pile should be arranged at a stable position beside the road, and the precision of the pile should meet relevant regulations. A temporary level point is arranged at each position l00m which is proper and away from the road boundary, so that the road elevation can be rechecked in the construction process. And secondly, installing the template, wherein the steel template is preferably made of channel steel or profile steel, removing sundries on the surface of the leveling layer before pouring concrete, performing necessary finishing, and installing the steel template after accurately setting out the plane position and the elevation. The formwork is accurately and stably erected, the joints are tight and smooth, the phenomena of front and back alternate stubbles, uneven height and the like cannot occur, slurry does not leak, the formwork is firm, reliable and convenient to assemble and disassemble, so that the formwork can bear the impact and vibration of tamping and facing equipment when concrete is poured, the formwork is comprehensively inspected before the mixed material is paved, and a release agent is coated on the surface of the formwork. The height of the formwork is completely guaranteed by means of accurate construction of each step, and due to the fact that a single formwork is assembled, the number of installation times is large, joints are large, and a lot of human factors and environmental factors exist in the construction process, so that the wrong joint is large, the linearity is poor, the overall stability is poor, the flatness of the formwork is poor, the elevation of the top surface of the formwork cannot meet the design requirements, and the flatness of the finally formed concrete top surface is poor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a construction method for finely adjusting the lifting height of a pavement template, which can flexibly adjust the distance between an upper framework and a lower framework of a concrete template and accurately control the elevation of the pavement template, thereby achieving the purpose of lifting the template.
The principle of the invention is as follows: the screw cap of pre-buried on steel form and angle steel is utilized, and the double-screw bolt is installed on the screw cap, rotates the double-screw bolt under the motionless condition of screw cap, and the screw thread counter-rotation that the both ends of double-screw bolt are turned to opposite drives the principle that screw cap and steel form and angle steel go up and down, adjusts the distance between the skeleton about the concrete form, accurate control road formwork elevation to realize the purpose that the template goes up and down.
Based on the principle, the invention adopts the technical scheme that: the construction method for finely adjusting the lifting height of the pavement formwork comprises the following steps:
(a) designing and manufacturing a pavement template, and reserving stud mounting holes and positions of embedded parts on the pavement template;
(b) designing and manufacturing a stud, and mounting the stud on the pavement template manufactured in the step (a);
(c) installing a template fixing rod on the pavement template installed in the step (b);
(d) mounting a concrete baffle on the pavement formwork mounted in the step (c);
(e) assembling the pavement formwork installed in the step (d) at a specified position, and adjusting the height of the pavement formwork by rotating the stud in the assembling process to enable the pavement formwork to reach the required height;
(f) and pouring concrete on the assembled pavement formwork.
Further, in the step (a), the pavement template is designed to be 30mm lower than the pavement thickness.
Further, in the step (b), both ends of the stud are provided with thread sections, the thread turning directions of the two thread sections are opposite, two through holes are radially arranged on the stud between the two thread sections, the axes of the two through holes are perpendicular to each other, and the two thread sections are connected with the nut.
Further, in the step (b), after the stud is installed on the stud installation hole through spot welding, the simulated lifting operation of the pavement template needs to be performed, so that the template can meet the requirement of free lifting.
Further, in the step (c), the formwork fixing rod is used for fixing upper section steel and lower section steel of the pavement formwork, the distance between the upper section steel and the lower section steel is 500mm, and the formwork fixing rod is fixed on the pavement through the first fixing steel bars and the second fixing steel bars.
Furthermore, the end of the longer side of the 7-shaped first fixed steel bar is connected with a nut matched with the diameter of the second fixed steel bar.
Further, in the step (d), the concrete baffle plate is installed on the pavement formwork through bolts, and the bolt spacing is 2A 6-300.
Furthermore, in the step (e), the splicing joint position of the pavement template is close to the contraction joint and the expansion joint, and the pavement template is fixed on the pavement through the first fixed reinforcing steel bars and the second fixed reinforcing steel bars.
Further, in the step (e), after the template is completely and firmly fixed, the elevation of the top surface of the template is adjusted by adopting an elevation adjusting rod.
The invention has the beneficial effects that:
(1) the construction method is simple and convenient to operate, the overall construction progress is improved, and the construction cost is saved.
(2) The construction method can flexibly adjust the height of the pavement formwork, and the formwork is integrally assembled, so that the mounting times are few, the joints are few, the staggered joints are few, the linearity is good, the integral stability is good, the flatness of the formwork is good, the elevation of the top surface of the formwork meets the design requirement, and the flatness of the finally formed concrete top surface is good.
Drawings
FIG. 1 is a view of a stud construction of the present invention.
Fig. 2 is a view showing an installation structure of the stud and the pavement formwork according to the present invention.
Fig. 3 is a view showing an installation structure of the formwork fixing rod and the road surface formwork of the present invention.
Fig. 4 is a view showing an installation structure of the concrete barrier, the stud and the pavement formwork according to the present invention.
Fig. 5 is a structural view of a first fixing bar of the present invention.
Fig. 6 is a view illustrating an installation structure of the first fixing reinforcing bars and the upper section steel according to the present invention.
Fig. 7 is a view illustrating an installation structure of the first fixing reinforcing bars and the lower section steel according to the present invention.
Labeled as: 1-stud, 2-through hole, 3-nut, 4-template fixing rod, 5-concrete baffle, 6-upper profile steel, 7-lower profile steel, 8-first fixing steel bar, 9-second fixing steel bar, 10-nut, 11-bolt, 1 a-thread section and 1 b-thread section.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Example 1:
the construction method for finely adjusting the lifting height of the pavement formwork comprises the following steps:
(a) the method comprises the steps of designing and manufacturing a pavement template, designing the pavement template according to a pavement design drawing, wherein a pavement lower structure layer is uneven, if the height of the pavement template is consistent with the height of a pavement, the pavement lower structure layer needs to be dug downwards, a heightening template or a poured concrete top surface is higher than a design value, so that in order to ensure the installation precision of the pavement template, the design thickness of the pavement template is about 30mm lower than that of the pavement, and after the positions of a reserved hole and a pre-buried part are required to be adjusted and lifted according to the pavement template, the pavement template is manufactured after being approved and qualified, the thickness of the pavement template is 2mm, and the pavement template is assembled before leaving a factory to ensure the normal use of.
(b) Designing and manufacturing a stud, wherein the stud 1 is structurally shown in figure 1, thread sections 1a and 1b are arranged at two ends of the stud 1, the thread turning directions of the two thread sections 1a and 1b are opposite, two through holes 2 are arranged on the stud 1 between the two thread sections 1a and 1b in the radial direction, the axes of the two through holes 2 are perpendicular to each other, the two thread sections 1a and 1b are both connected with a nut 3, the length of the stud 1 is 70mm, the diameter of the stud 1 is phi 12 mm, and the height of the top surface of the road surface template after lifting is guaranteed to be less than or equal to 50mm by rotating the stud 1. As shown in fig. 2, after the stud 1 is manufactured, the stud 1 is installed on the pavement formwork manufactured in the step (a), and after the stud 1 is installed on the installation hole of the stud 1 through spot welding, a simulated lifting operation of the pavement formwork is required to be performed, so that the formwork meets the requirement of free lifting, and the distance between nuts 3 on the pavement formwork can be increased.
(c) As shown in fig. 3, a formwork fixing rod 4 is installed on the pavement formwork installed in the step (b), the pavement formwork comprises an upper section steel 6 and a lower section steel 7, the upper section steel 6 is generally channel steel, the lower section steel 7 is angle steel, the upper section steel 6 and the lower section steel 7 are both connected and fixed by a plurality of uniformly distributed formwork fixing rods 4, the formwork fixing rod 4 is a steel pipe A16 and has a length of 60mm, the distance between the upper section steel 6 and the lower section steel 7 is 500mm during installation, first fixing steel bars 8 are welded on both the two formwork fixing rods 4, as shown in fig. 5, the first fixing steel bars 8 are steel bars bent into a 7 shape, the end of the longer side is connected with a nut 10 of M12, the nut 10 is used for fixing the second fixing steel bar 9, the second fixing steel bar 9 is a steel bar with the length of 200M and the diameter of 10mm, as shown in fig. 6 and 7, the first fixed reinforcing steel bar 8 used for fixing the upper section steel 6 is longer than the first fixed reinforcing steel bar 8 used for fixing the lower section steel 7.
(d) As shown in fig. 4, a concrete baffle 5 is installed on the pavement formwork installed in the step (c), the concrete baffle 5 is made of a steel plate with a thickness of 2mm, and in order to ensure the replaceability of the steel plate, the concrete baffle 5 is installed on the upper section steel 6 of the pavement formwork through bolts 11, the distance between the bolts 11 is 2a6-300, that is, the upper section steel 6 and the lower section steel 7 are both connected with the concrete baffle 5 through the bolts 11.
(e) Assembling the pavement formwork installed in the step (d) at a specified position, firstly popping up an installation position line of the pavement formwork on a cement stable layer, ensuring that the joint position of the pavement formwork is close to a contraction joint and an expansion joint, simultaneously adopting an electric hammer to drill a hole on the pavement formwork in order to ensure the verticality of the installation of the pavement formwork, then driving a formwork fixing rod 4, fixing the formwork fixing rod 4 on the pavement through a 7-shaped fixing steel bar, after the pavement formwork is completely fixed, a technician adopts an elevation adjusting rod to adjust the elevation of the top surface of the formwork, and rotating a stud 1 to adjust the height of the pavement formwork so as to ensure that the pavement formwork reaches the required height. The in-out route of the concrete transport vehicle needs to be considered during the installation of the template, so that the smooth in-out of the concrete transport is facilitated. The templates at the vehicle access point are closed with sizing templates. The position template is customized according to the actual width of the framing plate according to a prior scheme. The template collision deformation is prevented in the template carrying process, and the template is manually erected and controlled by paying attention to the verticality of the template.
And pouring concrete on the assembled pavement formwork, and finishing the pouring of the concrete according to a conventional pouring method.
Claims (6)
1. The construction method for finely adjusting the lifting height of the pavement formwork is characterized by comprising the following steps of: the method comprises the following steps:
(a) designing and manufacturing a pavement template, wherein the pavement template comprises upper section steel (6) and lower section steel (7), and mounting holes of studs and positions of embedded parts are reserved on the pavement template;
(b) designing and manufacturing a stud (1), wherein both ends of the stud (1) are provided with thread sections (1 a, 1 b), the thread turning directions of the two thread sections (1 a, 1 b) are opposite, two through holes (2) are arranged in the radial direction of the stud (1) between the two thread sections (1 a, 1 b), the axes of the two through holes (2) are mutually vertical, the two thread sections (1 a, 1 b) are both connected with a nut (3), and the stud (1) is installed on the pavement formwork manufactured in the step (a);
(c) installing a template fixing rod (4) on the pavement template after installation in the step (b), wherein the template fixing rod (4) is used for fixing upper section steel (6) and lower section steel (7) of the pavement template;
(d) mounting a concrete baffle (5) on the pavement formwork mounted in the step (c);
(e) assembling the pavement formwork installed in the step (d) at a specified position, fixing a formwork fixing rod (4) on the pavement through a first fixing steel bar (8) and a second fixing steel bar (9), wherein the first fixing steel bar (8) is a 7-shaped steel bar, the end of the longer side of the first fixing steel bar is connected with a nut (10) matched with the diameter of the second fixing steel bar (9), and adjusting the height of the pavement formwork through rotating a stud (1) in the assembling process to enable the pavement formwork to reach the required height;
(f) and pouring concrete on the assembled pavement formwork.
2. The pavement formwork fine-tuning elevation height construction method according to claim 1, characterized in that: in the step (a), the pavement template is designed to be 30mm lower than the pavement thickness.
3. The pavement formwork fine-tuning elevation height construction method according to claim 1, characterized in that: in the step (b), after the stud (1) is installed on the installation hole of the stud through spot welding, the simulated lifting operation of the pavement template needs to be carried out, and the template is ensured to meet the requirement of free lifting.
4. The pavement formwork fine-tuning elevation height construction method according to claim 1, characterized in that: in the step (c), the distance between the upper section steel (6) and the lower section steel (7) is 500 mm.
5. The pavement formwork fine-tuning elevation height construction method according to claim 1, characterized in that: in the step (e), the splicing joint position of the pavement template is close to the contraction joint and the expansion joint.
6. The pavement formwork fine-tuning elevation height construction method according to claim 1, characterized in that: and (e) after the templates are completely and firmly fixed, adjusting the elevation of the top surface of the template by using an elevation adjusting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608840.4A CN108625262B (en) | 2018-06-13 | 2018-06-13 | Stud and construction method for fine adjustment of lifting height of pavement formwork of stud |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810608840.4A CN108625262B (en) | 2018-06-13 | 2018-06-13 | Stud and construction method for fine adjustment of lifting height of pavement formwork of stud |
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| Publication Number | Publication Date |
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| CN108625262A CN108625262A (en) | 2018-10-09 |
| CN108625262B true CN108625262B (en) | 2021-02-05 |
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| CN201810608840.4A Active CN108625262B (en) | 2018-06-13 | 2018-06-13 | Stud and construction method for fine adjustment of lifting height of pavement formwork of stud |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111197276A (en) * | 2020-01-14 | 2020-05-26 | 温州永昌建设有限公司 | Template supporting method and device for building road |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255929A (en) * | 2012-02-15 | 2013-08-21 | 天津三春科技有限公司 | Assembly technology of adjustable supporting columns and eight type modularized steel floor slab moulds |
| CN103290763A (en) * | 2013-06-14 | 2013-09-11 | 北京航空航天大学 | Steel template for elevation-adjustable road surface |
| CN105952143A (en) * | 2016-05-24 | 2016-09-21 | 中交航局第四工程有限公司 | Combined steel template used for super-flat floor flattening |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB872119A (en) * | 1959-02-16 | 1961-07-05 | Robert Eugene Heltzel | Improvements in forms for casting roads |
| CN201351362Y (en) * | 2008-12-13 | 2009-11-25 | 广西建工集团第五建筑工程有限责任公司 | Cast-in-place concrete ground planeness and elevation control device |
| CN202509768U (en) * | 2012-03-09 | 2012-10-31 | 天津二十冶建设有限公司 | Side steel die supporting and protecting device for reinforced concrete terrace construction |
| CN207277143U (en) * | 2017-04-27 | 2018-04-27 | 上海二十冶建设有限公司 | A kind of bracing means of mattess punching block |
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2018
- 2018-06-13 CN CN201810608840.4A patent/CN108625262B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255929A (en) * | 2012-02-15 | 2013-08-21 | 天津三春科技有限公司 | Assembly technology of adjustable supporting columns and eight type modularized steel floor slab moulds |
| CN103290763A (en) * | 2013-06-14 | 2013-09-11 | 北京航空航天大学 | Steel template for elevation-adjustable road surface |
| CN105952143A (en) * | 2016-05-24 | 2016-09-21 | 中交航局第四工程有限公司 | Combined steel template used for super-flat floor flattening |
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| CN108625262A (en) | 2018-10-09 |
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