阅读说明：本技术 混凝土整平控制方法 (Concrete leveling control method ) 是由 王平 王彦合 王林林 卢晓亮 于 2020-12-23 设计创作，主要内容包括：本发明涉及一种混凝土整平控制方法,适用带凹槽结构的混凝土台结构,包括以下步骤：在凹槽结构的模板的顶角处浇筑混凝土；所述凹槽结构为起点向四周浇筑混凝土,控制浇筑点处的混凝土面高出混凝土台标高2cm以上；对所浇筑的混凝土进行振捣和初步整平；以凹槽结构为起点向四周浇筑混凝土,进而使得凹槽周边的混凝土凝固后具有一定的排水坡,使得凹槽内不易积水,同时混凝土凝固过程中的产生的水也不易流到凹槽内,浇筑点处的混凝土台高于设计标高至少2cm,以便于整平后的多余的混凝土能够向前推进填补后面混凝土,避免多次浇筑混凝土,提高了施工效率,同时还能保证浇筑点处混凝土的密实度。(The invention relates to a concrete leveling control method, which is suitable for a concrete platform structure with a groove structure and comprises the following steps: pouring concrete at the top angle of the template with the groove structure; pouring concrete from the starting point to the periphery by the groove structure, and controlling the concrete surface at the pouring point to be higher than the elevation of the concrete platform by more than 2 cm; vibrating and primarily leveling the poured concrete; use groove structure to pour the concrete all around as the starting point, and then make the peripheral concrete of recess have certain drainage slope after solidifying, make difficult ponding in the recess, the water of the production of concrete solidification in-process also is difficult for flowing to the recess simultaneously, the concrete platform of pouring some department is higher than design elevation at least 2cm, so that unnecessary concrete after the flattening can impel forward and fill the rear concrete, avoid pouring the concrete many times, the efficiency of construction is improved, can also guarantee the closely knit degree of pouring some department concrete simultaneously.)

1. A concrete leveling control method is suitable for a concrete platform structure with a groove structure, and is characterized by comprising the following steps:

pouring concrete at the top angle of the template with the groove structure;

pouring concrete from the starting point to the periphery by the groove structure, and controlling the concrete surface at the pouring point to be higher than the elevation of the concrete platform by more than 2 cm;

vibrating and primarily leveling the poured concrete;

and finely leveling the primarily leveled concrete.

2. The concrete leveling control method according to claim 1, wherein the vibrating and primarily leveling the poured concrete includes:

adopting an inserted vibrating rod with the diameter of 50 to vibrate the poured concrete for one time;

and secondarily vibrating the concrete around the formwork by adopting an insertion vibrating rod with the diameter of phi 30.

3. The concrete leveling control method according to claim 1, wherein the vibrating and primarily leveling the poured concrete includes:

and (3) roughly flattening the vibrated concrete, and manually and finely flattening the surface of the roughly flattened concrete.

4. The concrete leveling control method according to claim 3, wherein after the vibrating and primarily leveling the poured concrete, the method comprises:

after the groove structure is rough and flat, cleaning mortar on the edge of the groove template;

and after the initial setting and before the final setting of the concrete, removing the groove template, and finishing the surface in the groove structure.

5. The concrete leveling control method according to claim 3, wherein the vibrating and primarily leveling the poured concrete further comprises:

when the concrete slump is lower than the preset concrete slump and the concrete surface elevation is higher than the preset concrete surface elevation threshold value;

the poured concrete is roughly leveled through the spiral material lying mechanism and the vibration leveling mechanism.

6. The concrete leveling control method according to claim 5, wherein the finely leveling the preliminarily leveled concrete includes:

and performing secondary surface collection on the poured concrete through the round rod burnishing mechanism.

7. The concrete leveling control method according to claim 3, wherein the vibrating and primarily leveling the poured concrete further comprises:

when the concrete slump is higher than the preset concrete slump and the concrete surface elevation is higher than the preset concrete surface elevation threshold value;

and roughly leveling the poured concrete through a vibration leveling mechanism.

8. The concrete leveling control method according to claim 1, wherein the finely leveling the preliminarily leveled concrete includes:

carrying out first face folding on the leveled concrete surface by adopting an iron trowel;

and adopting an iron trowel to polish the edges and corners in the concrete structure.

9. The method of claim 8, wherein the step of smoothing the corners of the concrete structure with an iron trowel comprises:

and carrying out overall press polishing on the concrete surface by adopting an iron trowel.

10. The concrete leveling control method according to claim 3, wherein the rough leveling of the vibrated concrete includes:

and acquiring the parameters of the poured concrete in real time through a total station acquisition instrument, and determining the surface elevation of the poured concrete.

Technical Field

The invention relates to the technical field of track construction, in particular to a concrete leveling control method.

Background

At present, with the rapid development of the high-speed railway in China, some automatic or semi-automatic small mechanical equipment is also appeared in the construction of the high-speed railway for carrying out the track construction. In the construction operation process of track concrete pouring, mechanical equipment needs to be manually controlled to operate, and multiple persons are often needed to cooperate with mechanical equipment to operate. In order to achieve the construction precision, more operation equipment needs to be adopted for manual cooperation operation, and the construction efficiency is reduced. Meanwhile, in the operation mode of the conventional concrete base, the poured cloth points often start from one end and move towards the other end, the mode is only suitable for the conventional common concrete base plate, the operation mode cannot be general, for the concrete base plate with the groove structure, the compactness and the elevation of the peripheral concrete of the groove structure cannot be guaranteed, the existing operation mode is adopted, the height of the bottom plate and the strength after solidification are inconsistent, the size precision of the rail base plate after operation is poor, the standardization can not be realized in the construction process at the same time, the strength of rail operation is not easy to reach, and then the rail base plate with the strength which does not reach the standard needs to be operated again, the construction efficiency is reduced, and the construction progress is slowed down.

Disclosure of Invention

In order to overcome the technical problems, particularly the problems that the compactness and the elevation of the concrete around the groove structure cannot be ensured in the conventional operation mode, the height of the bottom plate and the strength after solidification are inconsistent, the standardization cannot be realized in the construction process, and the strength of track running cannot be easily achieved, the following technical scheme is specially provided:

the concrete leveling control method provided by the embodiment of the application,

be suitable for concrete platform structure of taking groove structure, include the following step:

pouring concrete at the top angle of the template with the groove structure;

pouring concrete from the starting point to the periphery by the groove structure, and controlling the concrete surface at the pouring point to be higher than the elevation of the concrete platform by more than 2 cm;

vibrating and primarily leveling the poured concrete;

and finely leveling the primarily leveled concrete.

Optionally, the vibrating and primarily leveling the poured concrete includes:

adopting an inserted vibrating rod with the diameter of 50 to vibrate the poured concrete for one time;

and secondarily vibrating the concrete around the formwork by adopting an insertion vibrating rod with the diameter of phi 30.

Optionally, the vibrating and primarily leveling the poured concrete includes:

and (3) roughly flattening the vibrated concrete, and manually and finely flattening the surface of the roughly flattened concrete.

Optionally, the vibrating and primarily leveling the poured concrete includes:

after the groove structure is rough and flat, cleaning mortar on the edge of the groove template;

and after the initial setting and before the final setting of the concrete, removing the groove template, and finishing the surface in the groove structure.

Optionally, the vibrating and primarily leveling the poured concrete includes:

when the concrete slump is lower than the preset concrete slump and the concrete surface elevation is higher than the preset concrete surface elevation threshold value;

the poured concrete is roughly leveled through the spiral material lying mechanism and the vibration leveling mechanism.

Optionally, the finely leveling the preliminarily leveled concrete includes:

and performing secondary surface collection on the poured concrete through the round rod burnishing mechanism.

Optionally, the vibrating and primarily leveling the poured concrete includes:

when the concrete slump is higher than the preset concrete slump and the concrete surface elevation is higher than the preset concrete surface elevation threshold value;

and roughly leveling the poured concrete through a vibration leveling mechanism.

Optionally, the finely leveling the preliminarily leveled concrete includes:

carrying out first face folding on the leveled concrete surface by adopting an iron trowel;

and adopting an iron trowel to polish the edges and corners in the concrete structure.

Optionally, after the step of smoothing the corners in the concrete structure with an iron trowel, the method includes:

and carrying out overall press polishing on the concrete surface by adopting an iron trowel.

Optionally, the rough-leveling the vibrated concrete includes:

and acquiring the parameters of the poured concrete in real time through a total station acquisition instrument, and determining the surface elevation of the poured concrete.

Compared with the prior art, the invention has the following beneficial effects:

the concrete leveling control method provided by the embodiment of the application is suitable for a concrete platform structure with a groove structure, and comprises the following steps: pouring concrete at the top angle of the template with the groove structure; pouring concrete from the starting point to the periphery by the groove structure, and controlling the concrete surface at the pouring point to be higher than the elevation of the concrete platform by more than 2 cm; vibrating and primarily leveling the poured concrete; use groove structure as the starting point to concreting all around, and then have certain drainage slope after making the peripheral concrete of recess to solidify for be difficult for ponding in the recess, the water of the production of concrete solidification in-process also is difficult for flowing to in the recess simultaneously.

The concrete leveling control method provided by the embodiment of the application carries out fine leveling on the preliminarily leveled concrete. Concrete surface elevation in the evener that the evener passes through real-time detection concrete structure confirms the leveling mechanism in the evener that needs to start, and then guarantees that the concrete structure size after the flattening is comparatively unanimous, and the intensity of concrete is higher, and this in-process is implemented for the evener simultaneously, and then has improved the efficiency of construction, reduces artifical flattening process for the flattening process of concrete has realized the full automatization.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic flow chart of a concrete leveling control method according to the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, and/or operations, but do not preclude the presence or addition of one or more other features, integers, steps, operations, and/or groups thereof.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The concrete leveling control method provided by the embodiment of the application is applicable to a concrete platform structure with a groove structure as shown in fig. 1, and comprises the following steps: s110, S120, S130, S140.

S110: pouring concrete at the top angle of the template with the groove structure;

s120: pouring concrete from the starting point to the periphery by using the groove structure, and controlling the concrete surface at the pouring point to be higher than the elevation of the concrete platform by more than 2 cm;

s130: vibrating and primarily leveling the poured concrete;

s140: and finely leveling the primarily leveled concrete.

Because the concrete platform (like the concrete bed plate in the track) of taking groove structure when the construction, the slope of the peripheral concrete of concrete groove structure need be controlled to and the intensity of flattening in-process and solidification in-process concrete, avoid the concrete of groove structure's edges and corners angle crackle to appear. In the embodiment that this application provided, concrete is pour in the apex angle department of groove structure's template to make groove structure's apex angle have the concrete of sufficient volume, avoid groove structure's apex angle hollowing state to appear. And then pouring concrete to the periphery by taking the groove structure as a starting point, and also enabling the gaps at the periphery of the template of the groove structure to be filled with the concrete, wherein the concrete pouring and distributing process adopts the principle of front height and rear bottom, namely the concrete surface at the pouring point is controlled to be higher than the designed elevation of the concrete platform by more than 2 cm. In the process of vibrating and primarily leveling the poured concrete, after the concrete is vibrated and primarily leveled, redundant concrete can be pushed forwards to fill the concrete behind, the redundant concrete is prevented from being taken out, or the situation that the concrete needs to be poured again due to insufficient concrete at a pouring point is avoided, the requirements on compactness, solidity and elevation of the concrete are met, and the construction efficiency is improved. In order to ensure that the surface of the concrete is sufficiently flat, the primarily-leveled concrete is leveled, and the requirements on the flatness and the smoothness of the concrete surface are improved.

Optionally, vibrating and preliminarily leveling the poured concrete, comprising:

adopting an inserted vibrating rod with the diameter of 50 to vibrate the poured concrete for one time;

and secondarily vibrating the concrete around the formwork by adopting an insertion vibrating rod with the diameter of phi 30.

After concrete pouring is finished, in order to improve the solidification rate of the concrete and the compactness after solidification, a phi 50 vibrating rod is adopted to vibrate the poured concrete for one time, namely concrete solidification is carried out on the poured concrete, when a plurality of vibrating rods vibrate simultaneously, the moving distance of the vibrating rods is not more than 40cm, the distance between the vibrating rods and a side template is kept between 5 cm and 10cm, the vibrating time of one vibrating point is 20 s to 30s generally, the vibrating rods are inserted slowly, the concrete is prevented from being solidified in advance and splashed, and meanwhile, the concrete on the upper layer is also vibrated fully when the concrete is guaranteed to be discharged. The vibration is continued for a period of time at each vibration point until no floating slurry appears on the concrete surface, the concrete no longer falls significantly and no large amount of air bubbles emerge. And after the primary vibration is finished, secondarily vibrating the concrete around the formwork by adopting a vibrating rod with the diameter of phi 30. The phi 30 vibrating rod reduces the influence on the template in the vibrating process, and is also convenient for bubbles at the periphery of the template to be completely discharged, so that the concrete at the periphery of the template also has better compactness, wherein the phi 50 vibrating rod and the phi 30 vibrating rod are insertion-type vibrating rods.

Optionally, vibrating and preliminarily leveling the poured concrete, comprising:

and (3) roughly flattening the vibrated concrete, and manually and finely flattening the surface of the roughly flattened concrete.

After the concrete is vibrated, the vibrated concrete is roughly flattened to prepare for collecting the surface, and the smoothness of the concrete surface is improved. In order to avoid the influence of the uneven concrete surface on the integral flatness of the concrete, the rough and flat concrete surface is manually and precisely leveled.

Optionally, vibrating and preliminarily leveling the poured concrete, comprising:

after the groove structure is rough and flat, cleaning mortar on the edge of the groove template;

and (3) removing the groove template after initial setting and before final setting of the concrete, and finishing the surface in the groove structure.

In the embodiment that the application provided, when being equipped with groove structure in the concrete, after the evener passes through groove structure completely, then clearance groove formwork edge mortar avoids solidifying the back clearance and will cause the damage to groove structure's edges and corners. And then removing the template of the groove structure after the initial setting and before the final setting of the concrete in the concrete base plate, and finishing the surface in the groove structure, wherein the time for removing the groove template is controlled to prevent the concrete from collapsing or cracking at four corners too early, and if necessary, replenishing and compacting with fresh concrete.

Optionally, vibrating and preliminarily leveling the poured concrete, comprising:

when the concrete slump is lower than the preset concrete slump and the concrete surface elevation is higher than the preset concrete surface elevation threshold value;

the poured concrete is roughly leveled through the spiral material lying mechanism and the vibration leveling mechanism.

In the embodiment provided by the application, when the concrete slump is lower than the preset concrete slump and the elevation of the concrete surface is higher than the elevation threshold of the preset concrete surface, it is shown that the moisture in the concrete is relatively less at the moment, the concrete is not easy to sink, and more air bubbles are possibly generated, so that the inside of the concrete is not firm enough. Consequently, start spiral among the evener simultaneously and lie prone material mechanism and the floating mechanism of vibration for concrete can further sink, guarantee concrete structure's intensity, and level it, make the concrete surface have better roughness and smoothness. Illustratively, if the preset slump is 140mm, the preset concrete surface elevation threshold value is 0-2 cm; then the slump is less than 140mm on the concrete, and when the concrete face is higher than design elevation 2cm, show that the moisture is relatively less in the concrete this moment, be difficult to sink, and probably have more bubble, then the evener starts spiral raking mechanism and vibration trowelling mechanism simultaneously, make unnecessary concrete can be strickleed away by the push flat scraper blade, can push down the concrete simultaneously admittedly, and vibrate bubble wherein, and then improve the intensity of concrete, and make the concrete elevation after the evener is roughly leveled highly satisfy the design height requirement.

Optionally, finely screeding the preliminarily screeded concrete includes:

and performing secondary surface collection on the poured concrete through the round rod burnishing mechanism.

In an embodiment of this application, be less than preset concrete slump when concrete slump, and concrete face elevation is higher than preset concrete face elevation threshold value, after using the evener to carry out rough flattening, in order to further increase the closely knit degree of concrete for concrete in the concrete bed plate fuses more closely, when receiving the face for the second time, starts the round rod press polish structure and receives the face to the concrete face.

Optionally, vibrating and preliminarily leveling the poured concrete, comprising:

when the concrete slump is higher than the preset concrete slump and the elevation of the concrete surface is higher than the elevation threshold value of the preset concrete surface;

and roughly leveling the poured concrete through a vibration leveling mechanism.

In the embodiment provided by the application, when the concrete slump is greater than the preset concrete slump and the concrete surface elevation is within the preset concrete surface elevation threshold value, it is indicated that the moisture in the concrete is appropriate at the moment, the concrete is easy to fuse, and more air bubbles may be in the concrete. At the moment, the vibration and leveling mechanism is started to vibrate and discharge air bubbles in the concrete, so that the concrete is tightly combined, and the surface of the concrete is leveled, thereby meeting the requirements of elevation, flatness and smoothness of the top surface of the concrete. As shown in the foregoing example, if the preset slump is 140mm, and the preset elevation threshold of the concrete surface is 0-2cm, the slump on the concrete is greater than 140mm, and the concrete surface is within 2cm of the designed elevation, which indicates that the concrete is easy to fuse at this time, and there may be more air bubbles in the concrete, the leveling machine starts the vibration leveling mechanism to perform vibration leveling on the concrete surface.

Optionally, finely screeding the preliminarily screeded concrete includes:

carrying out first face folding on the leveled concrete surface by adopting an iron trowel;

and (4) adopting an iron trowel to polish edges and corners in the concrete structure.

Optionally, after the iron trowel is used for polishing the corners in the concrete structure, the method includes:

and carrying out comprehensive press polishing on the concrete surface by adopting an iron trowel.

In the examples provided herein, after the concrete face is roughed by the screed, the concrete top face is leveled to meet the elevation, flatness, and smoothness requirements of the concrete top face after the screed is leveled by the screed. The concrete surface is collected by adopting an iron trowel for the first time, after the iron trowel for the first time is smeared, a construction plastering tool is set up, and the whole surface of the iron trowel is manually polished; then, adopting an iron trowel to perform secondary light-collecting track construction on the bottom of the groove of the base plate and the edge angle, and then adopting the iron trowel to perform third comprehensive light-collecting; and (3) performing comprehensive calendering for the third time on the spot according to the coagulation upper surface pressed by fingers to check the solidification state, namely performing comprehensive calendering for one time when 0.5-lmm finger impression can be left.

Optionally, rough-leveling the vibrated concrete includes:

collecting the parameters of the poured concrete in real time through a total station collector;

determining the elevation of the poured concrete surface based on the concrete parameters;

in the embodiments provided in this application, in order to avoid vibrating the slurry too frequently and thus bringing more air bubbles, or the trowel is traveling too fast or too slow, resulting in the partial concrete surface being screeded with less than desired flatness and smoothness. And collecting the parameters of the poured concrete in real time through a total station collector, wherein the parameters of the concrete pouring comprise a solidification state, the water content of the concrete, the relevant plane size of a concrete surface, the elevation of the concrete surface and the like. The leveling machine receives the elevation which is calculated out through concrete parameters to determine the concrete slump and the concrete surface, and then the total station acquisition instrument of the leveling machine acquires the elevation in real time. The automatic leveling of the concrete base plate reduces the steps of manual participation in the leveling process of the concrete base plate, improves the construction efficiency and the construction precision, and is beneficial to the standardization of the construction process. In addition, the propulsion speed of the screed and the vibrating screed frequency can also be determined based on the concrete parameters. Illustratively, when the concrete is fast to reach initial setting, the propelling speed of the leveling machine is increased, and the vibration slurry lifting frequency of the vibration leveling mechanism is reduced, so that the vibration leveling of the concrete is realized quickly, and more air bubbles brought by too frequent vibration slurry lifting are reduced. And higher at concrete water content, when difficult to reach the initial set state, then slow down evener advancing speed, increase the vibration of the floating mechanism of vibration simultaneously and carry thick liquid frequency to realize the vibration of concrete fast and floating, make the bubble in the concrete discharge out completely.

In the embodiments provided herein, during the leveling of concrete using a screed machine, the front leveling blades and the rear leveling blades of the screed machine are adjusted to a predetermined position. In order to improve the vibrating and leveling efficiency of the leveling machine and ensure that the leveled concrete is within the error range of the designed height, the concrete stacking height in the template is not too high, and the concrete at the lower part of the concrete stacking height can be supplemented. Therefore, the leveling screeds of the leveling machines are required to be adjusted to a preset position, so that the concrete with higher pile can be primarily leveled, and the redundant concrete can be scraped to a position where the concrete pile height is lower, so that the concrete can be uniformly poured in the formwork. The preset position of the front leveling scraper is that after the concrete is primarily leveled, the position of the top surface of the concrete which is leveled can reach the designed elevation range. The top surface of the concrete can scrape the designed drainage slope and is adjusted to a preset position for the back-pushing flat scraper. Namely, after the rear leveling scraper is adjusted to the preset position, the drainage slope with the designed height is scraped in the advancing process of the leveling machine.

In embodiments provided herein, a concrete face is screeded by a front screed blade and a rear screed blade during travel of the screed, with the front screed blade and the rear screed blade being deposited with a predetermined amount of concrete. The front leveling scraper is adopted to scrape away redundant concrete on the concrete surface, the rear leveling scraper is adopted to scrape the drainage slope hung out of the concrete surface, in order to avoid the damage of the front leveling scraper and the rear leveling scraper to the concrete surface, the concrete surface can be compensated when less concrete exists, meanwhile, the front leveling scraper and the rear leveling scraper operate in an empty state, and the front leveling scraper and the rear leveling scraper are accumulated with the concrete with preset amount.

In summary, the concrete leveling control method provided by the application has the following beneficial effects:

the concrete leveling control method provided by the embodiment of the application is suitable for a concrete platform structure with a groove structure, and comprises the following steps: pouring concrete at the top angle of the template with the groove structure; pouring concrete from the starting point to the periphery by using the groove structure, and controlling the concrete surface at the pouring point to be higher than the elevation of the concrete platform by more than 2 cm; vibrating and primarily leveling the poured concrete; use groove structure as the starting point to concreting all around, and then have certain drainage slope after making the peripheral concrete of recess to solidify for be difficult for ponding in the recess, the water of the production of concrete solidification in-process also is difficult for flowing to in the recess simultaneously.

The concrete leveling control method provided by the embodiment of the application carries out fine leveling on the preliminarily leveled concrete. Concrete slump and concrete face elevation in the evener that the evener passes through real-time detection concrete structure, confirm the leveling mechanism in the evener that needs to start, and then guarantee that the concrete structure size after the flattening is comparatively unanimous, and the intensity of concrete is higher, and this in-process is implemented for the evener simultaneously, and then has improved the efficiency of construction, reduces artifical flattening process for the flattening process of concrete has realized the full automatization.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.