CN110453726B - Construction device and method for leveling overlong reinforced concrete bottom plate - Google Patents
Construction device and method for leveling overlong reinforced concrete bottom plate Download PDFInfo
- Publication number
- CN110453726B CN110453726B CN201910663094.3A CN201910663094A CN110453726B CN 110453726 B CN110453726 B CN 110453726B CN 201910663094 A CN201910663094 A CN 201910663094A CN 110453726 B CN110453726 B CN 110453726B
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- angle iron
- guide wall
- steel bars
- track
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a construction device and a method for leveling an overlong reinforced concrete bottom plate, relating to the technical field of building construction, and comprising a plurality of groups of horizontally arranged bottom plate lower layer reinforcing steel bars, a plurality of groups of horizontally arranged bottom plate upper layer reinforcing steel bars arranged right above the bottom plate lower layer reinforcing steel bars, a vertical support, a supporting support upper end higher than the bottom plate upper layer reinforcing steel bars, a vertical short reinforcing steel bar fixed beside the supporting support and the supporting support form an installation groove, and an angle iron track with the top level to the surface of a precast bottom plate is fixed in the installation groove; and a circle of guide wall template, a positioning device for fixing the guide wall template and a scraping bar matched with the angle iron rail are arranged around the precast bottom plate. Firstly, laying bottom plate lower layer steel bars, bottom plate upper layer steel bars and guide wall steel bars, supporting a guide wall template, and leveling along the embedded angle iron track by using a scraping bar. The bottom plate is formed in one step, so that the phenomena of no concrete accumulation and unevenness at the bottom of the guide wall are prevented, the later repair is avoided, and the service life of the mud scraper is prolonged.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method for leveling a reinforced concrete bottom plate in a building construction process.
Background
With the progress of the south-to-north water transfer engineering, surface water plants are more and more constructed to protect underground water resources, and the requirements after construction are more and more. The horizontal sedimentation tank is used as a main structure of a surface water plant, because the bottom of the horizontal sedimentation tank is required to be provided with the mud scraper, the requirements on the elevation and the flatness of the bottom plate are far beyond the general standard requirements, and the mud scraper is arranged close to the guide wall and has higher requirements on the flatness of the bottom of the guide wall. The traditional leveling method is that an upper leveling elevation control line is popped up on a peripheral wall and a column, a leveling pier is smeared by pulling a horizontal line according to the line, and after the levelness is determined, concrete is poured to use the leveling. However, the leveling method is complicated in construction process, and low in construction efficiency. In the construction process, only measurement personnel are used for controlling instruments in the whole process, random factors are large, adverse conditions such as concrete pouring night construction and the like are met, and the construction quality cannot be guaranteed. The existing leveling technology can not ensure the one-step forming of the bottom plate, can cause no concrete accumulation and unevenness at the bottom of the guide wall, needs later-stage repair, reduces the service life of equipment, and increases the maintenance cost.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a construction device and a method for leveling an overlong reinforced concrete bottom plate, so that the bottom plate is formed at one time, the phenomena of concrete accumulation and unevenness at the bottom of a guide wall are prevented, the later repair is avoided, the service life of a mud scraper is prolonged, and the later maintenance cost is reduced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a construction device for leveling an overlong reinforced concrete bottom plate comprises a plurality of groups of horizontally arranged bottom plate lower-layer reinforcing steel bars and bottom plate upper-layer reinforcing steel bars arranged right above the bottom plate lower-layer reinforcing steel bars, a support point is welded on the bottom plate lower-layer reinforcing steel bars and the bottom plate upper-layer reinforcing steel bars, the upper end of a vertical support is higher than the bottom plate upper-layer reinforcing steel bars, a vertical short reinforcing steel bar is fixed beside the support, the support and the short reinforcing steel bar form a mounting groove, and an angle iron track with the top flush with the surface of a precast bottom plate is fixed in the mounting groove; the periphery of the precast bottom plate is provided with a circle of guide wall templates and a positioning device for fixing the guide wall templates, and the precast bottom plate also comprises a scraping bar matched with the angle iron track.
The technical scheme of the invention is further improved as follows: the positioning device comprises an outer batten on the outer side of the guide wall template and an inner batten on the inner side of the guide wall template, and the bottom of the inner batten is 30mm higher than the surface of the precast bottom plate.
The technical scheme of the invention is further improved as follows: the size of the angle iron rail is 25 mm multiplied by 3mm multiplied by 4000mm, the angle iron rail is horizontally placed, and one right-angle side of the angle iron rail faces upwards vertically.
A construction method for leveling an overlong reinforced concrete bottom plate includes the steps of firstly laying bottom plate lower-layer steel bars, bottom plate upper-layer steel bars and guide wall steel bars, supporting a guide wall template, and leveling along embedded angle iron rails by using scraping bars.
The technical scheme of the construction method is further improved as follows: the method specifically comprises the following steps:
a. guide wall template support
After the bottom plate and the guide wall reinforcing steel bars are installed, a guide wall template is erected on the periphery of the precast bottom plate, the guide wall template comprises a long guide wall template on the outer side and short guide wall templates which are arranged in the long guide wall template and are spaced by one guide wall thickness, and the long guide wall template and the tops of the short guide wall templates are equal in height;
b. welding support
Laying a bottom plate lower layer steel bar and a bottom plate upper layer steel bar and spot-welding a support on the bottom plate lower layer steel bar and the bottom plate upper layer steel bar, wherein the top end of the support is higher than the bottom plate upper layer steel bar;
c. welding short steel bar
Vertically welding short steel bars on the upper half part of the support, wherein the welding spot position is arranged at the height position of the steel bars on the upper layer of the bottom plate, and the distance between the support and the short steel bars is matched with the single-side thickness of the angle iron track;
d. track for installation leveling
Inserting one single side of the angle iron track into a gap between the support and the short steel bar, wherein the top of the short steel bar is in contact with the inner single-side plane of the angle iron track, and fixing two ends of each angle iron track and the upper-layer steel bar of the bottom plate through binding wires;
e. casting concrete and leveling
Concrete is poured along the parallel direction of the angle iron track, after the pouring is finished, the scraping bar is placed on the angle iron track and pushed along the angle iron track to scrape the concrete, and after the scraping is finished, wood is used for leveling; pouring concrete at the guide wall part after pouring the concrete of the bottom plate for 2-3 h;
f. take out track
Cutting off binding wires at two ends of the angle iron rail before initial setting of concrete, and taking out the angle iron rail;
g. secondary leveling press polish
And (3) polishing and compacting by using an iron trowel or an electric calender, performing secondary polishing and compacting before the concrete is finally set, and polishing and compacting the parts which do not meet the requirements in the secondary polishing and compacting process.
The construction method of the invention is further improved in that: and c, determining the elevation of the top of the short steel bar and the elevation of the top of the precast bottom plate before welding the short steel bar in the step c, and according to the elevation of the top of the short steel bar = the elevation of the top of the bottom plate-the unilateral thickness of the angle iron track.
The construction method of the invention is further improved in that: and c, determining the elevation of the top of the short steel bar and the elevation of the top of the precast bottom plate before welding the short steel bar in the step c, and according to the elevation of the top of the short steel bar = the elevation of the top of the bottom plate-the unilateral thickness of the angle iron track.
The construction method of the invention is further improved in that: and e, before the concrete is poured in the step e, measuring the top standard height of each angle iron track again, and adjusting the angle iron tracks which do not meet the requirements.
The construction method of the invention is further improved in that: and a water stop steel plate is connected in the guide wall template in a penetrating manner, and the water stop steel plate is arranged 500mm above the bottom surface of the bottom plate.
The construction method of the invention is further improved in that: the distance between adjacent angle iron rails is 1900mm, and the length of the scraping bar is 2000 mm.
The construction method of the invention is further improved in that: the distance between the supports at the two ends of the single angle iron track and the two ends of the angle iron track is 500mm, and the distance between the rest supports is 1500 mm.
Due to the adoption of the technical scheme, the invention has the technical progress that:
the invention ensures that the bottom plate is formed at one time, reduces the surface elevation and flatness deviation of the bottom plate, prevents the bottom of the guide wall from having no concrete accumulation and unevenness, avoids the later repair, prolongs the service life of the mud scraper and reduces the later maintenance cost.
The fixed inner battens or steel pipes at the bottom of the template at the position of the guide wall hanging mould are upwards improved by 30mm, the reinforcing effect of the fixed inner battens at the bottom or the iron pipes serving as frame pipes on the template at the position of the hanging mould is ensured, the trowel can enter the bottom of the inner battens or the iron pipes, and the deviation of the cast-in-place structure size at the position is ensured to meet the requirement.
The size of the rail is 25 multiplied by 3 multiplied by 4000mm, and a single side with enough width is provided, so that enough support can be provided for the rail when the rail is inserted into the gap, and the waste of materials is avoided. The track interval is 1900mm, and is slightly less than the length of a common scraping bar of 2000mm, so that the scraping bar is convenient to level.
The bottom end of the support is welded on the lower layer of the steel bar of the bottom plate, the upper part of the support is welded on the upper layer of the steel bar of the bottom plate, and the top end of the support is higher than the upper layer of the steel bar of the bottom plate, so that a leakage channel is prevented. The distance between the supporting supports is reasonably set, the supporting support number is reduced while the supporting effect of the supporting supports is guaranteed, the waste of materials is reduced, the supporting supports at the two ends of the track are more in number, and the defect that the concrete at the two ends of the track is less in restraint on the supporting supports is overcome.
And e, retesting the measuring points at the interval of 800mm, ensuring that the height difference of each measuring point in the length direction is within 8mm, ensuring that each dimension is within an error range, and adjusting the elevation of the track, so that the instability of the track in height is prevented, and the inclination or unevenness of the track is avoided.
The distance between the support at the two ends of the lower-layer steel bar of the bottom plate and the nearest support is set to be 500mm, the distance between the rest support is set to be 1500mm, the rigidity of the support at the two ends of the lower-layer steel bar of the bottom plate is ensured, the support is prevented from being unstable or bent, the density of the support at the middle position is reduced, and the waste of materials is reduced.
Drawings
FIG. 1 is a schematic view of the guide wall form of the present invention;
FIG. 2 is a schematic view of the present invention showing the structure of the stand;
FIG. 3 is a schematic view of the track support structure of the present invention;
FIG. 4 is a schematic plan view of the track layout of the present invention;
the steel plate comprises 1 outer battens, 1a long guide wall formwork, 1b short guide wall formwork, 2 inner battens, 3 steel pipes, 4 bottom plates, 5 guide walls, 6 water stop steel plates, 7 water stop split bolts, 8 angle iron rails, 9 support struts, 10 short steel bars, 11 bottom plate lower layer steel bars, 12 bottom plate upper layer steel bars, 13 welding spots, 14 bottom plate top elevation parts, 15 scraping bars.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in fig. 1, fig. 2, fig. 3, fig. 4, a construction equipment that overlength reinforced concrete bottom plate was made level, bottom plate lower floor's reinforcing bar 11 that sets up including the multiunit level and the bottom plate upper reinforcing bar 12 of setting directly over bottom plate lower floor's reinforcing bar 11, bottom plate lower floor's reinforcing bar 11 and bottom plate upper reinforcing bar 12 are connected through vertical bracket 9, and the spot welding of vertical bracket 9 bottom is on bottom plate lower floor's reinforcing bar 11, and the spot welding of upper portion is in bottom plate upper reinforcing bar 12, its characterized in that: the upper end of a vertical support 9 is higher than the upper-layer steel bar 12 of the bottom plate, a vertical short steel bar 10 is fixed beside the support 9, the support 9 and the short steel bar 10 form a mounting groove, and an angle iron track 8 with the top flush with the surface of the bottom plate to be poured is fixed in the mounting groove; a circle of guide wall templates and a positioning device for fixing the guide wall templates are arranged on the periphery of the precast bottom plate, each guide wall template comprises a long guide wall template 1a and short guide wall templates 1b which are arranged on the inner side and spaced by a guide wall thickness, an outer batten 1 is arranged on the outer side of the long guide wall template 1a, and an inner batten 2 and a steel pipe 3 are arranged on the outer side of the short guide wall template 1 b; and a scraping bar 15 matched with the angle iron rail 8.
The bottom of the inner batten 2 is 30mm higher than the surface of the precast bottom plate. The size of the angle iron rail 8 is 25 mm multiplied by 3mm multiplied by 4000mm, the angle iron rail 8 is horizontally placed, and one right-angle side of the angle iron rail faces upwards.
As shown in fig. 1, 2, 3 and 4, a construction method for leveling an overlong reinforced concrete bottom plate for digital power amplification includes the steps of firstly laying bottom plate lower layer steel bars 11, bottom plate upper layer steel bars 12 and guide wall steel bars, supporting a guide wall template, pouring a bottom plate and a guide wall after installing angle iron rails 8, and leveling along the embedded angle iron rails 8 by using a scraping bar 15. The angle iron track 8 is reasonably arranged for guiding the scraping bar 15 so as to reduce the leveling difficulty, and the construction method for leveling the reinforced concrete bottom plate requires that the elevation and the flatness of the bottom plate exceed the standard requirements in the process of installing equipment and comprises the following steps:
a. guide wall template support
The method comprises the following steps that guide wall formworks are erected on the periphery of a precast bottom plate, each guide wall formwork comprises a long guide wall formwork 1a on the outer side and short guide wall formworks 1b arranged in the long guide wall formwork 1a and spaced by a guide wall thickness, and the tops of the long guide wall formwork 1a and the tops of the short guide wall formworks 1b are equal in height. The construction joint between the guide wall and the bottom plate is arranged 500mm above the bottom surface of the bottom plate 4, a water stop steel plate 6 is arranged at the construction joint, the part of the guide wall 5 below the construction joint is poured together with the bottom plate 4, the guide wall template of the part is constructed by adopting a hanging formwork, the template at the position of the hanging formwork is fixed by using the inner battens 2 and the steel pipes 3 before construction, the inner battens 2 and the steel pipes 3 are fixed by water stop type split bolts 7, the nearest distance between the bottom of the inner battens 2 and the bottom plate 4 is 30mm, and the nearest distance is the vertical distance between the bottom of the inner battens 2 and the bottom plate 4.
b. Welding support
A plurality of pairs of bottom plate lower-layer steel bars 11 which are parallel to each other and a plurality of pairs of bottom plate upper-layer steel bars 12 which are parallel to each other are horizontally arranged; welding the bottom ends of a plurality of vertical support struts 9 on a bottom plate lower-layer steel bar 11, wherein the support struts 9 are made of steel bar excess materials, the diameter is about 12mm, the upper parts of the support struts 9 are welded on a bottom plate upper-layer steel bar 12, the top ends of the support struts 9 are higher than the bottom plate upper-layer steel bar 12, the lower ends of the support struts 9 do not exceed the bottom of the bottom plate lower-layer steel bar 11, and the upper ends of the support struts 9 are not higher than the bottom plate top elevation 14, so that a leakage channel is prevented; the distance between the supports at the two ends of the single angle iron track and the two ends of the angle iron track is 500mm, and the distance between the rest supports is 1500 mm.
c. Welding short steel bar
Measuring the elevation of the top of the short steel bar 10, measuring the single-side width of the equilateral angle iron serving as the angle iron track 8, and measuring the elevation of the elevation 14 of the top of the bottom plate; the size of the angle iron track 8 is 25 multiplied by 3 multiplied by 4000mm, the distance between a pair of angle iron tracks 8 is 1900mm, the length of the short steel bar 10 is selected to be 100mm according to the top elevation of the short steel bar 10 = the top elevation of the bottom plate-the single-side width of the angle iron track 8, the short steel bar 10 is vertically welded on the upper half part of the support 9, the short steel bar 10 is spot-welded on the support 9, the position of a welding spot 13 is near the upper layer steel bar 12 of the bottom plate, the operation and the installation of the angle iron track 8 are convenient, the welding spot 13 is lower than the top of the support 9 and the top of the short steel bar 10, the distance between the support 9 and the short steel bar 10 is matched with the single-side thickness of the angle iron track 8, a gap is formed between the support 9 and the short steel bar 10, the trend or the extension direction of the gap can be parallel to the upper layer steel bar 12 of the bottom plate or can be perpendicular to the upper layer steel bar 12 of the bottom plate; because the length of the angle iron track 8 is 4000mm, three support supports 9 are arranged at the bottom of each angle iron track 8, one support 9 is arranged 500mm away from each two ends of each angle iron track 8, one support is arranged in the middle of each angle iron track, and if the length of the angle iron track 8 at the end part is less than or equal to 2500mm, the support supports 9 are only arranged at the two ends of each angle iron track 8.
d. Track for installation leveling
One side of an angle iron track 8 is inserted into a gap between a support 9 and a short steel bar 10, the top of the short steel bar 10 is contacted with the inner side single side plane of the angle iron track 8, the angle iron track 8 can be parallel to an upper layer steel bar 12 of a bottom plate and can also be vertical to the upper layer steel bar 12 of the bottom plate under the influence of the gap between the support 9 and the short steel bar 10, when the track 1 is parallel to the upper layer steel bar 12 of the bottom plate, the single side of the track 1 is conveniently inserted into the gap between the support 9 and the short steel bar 10, when the track 1 is vertical to the upper layer steel bar 12 of the bottom plate, the position of each welding point 13 needs to be adjusted, so that welding points on the upper layer steel bars 12 of different bottom plates are positioned on the same straight line, and the straight line is parallel to the track 1, and the straightness of the welding points 13 needs to be ensured; and fixing two ends of each angle iron track 8 with the upper-layer steel bars 12 of the bottom plate through binding wires.
e. Casting concrete and leveling
The height of the top mark of each angle iron track 8 is measured again, and the angle iron tracks 8 which do not meet the requirements are adjusted; dividing measuring points on the angle iron track 8, dividing the measuring points at intervals of every 800mm, retesting the angle iron track 8, wherein the maximum allowable error of the height of each measuring point in the length direction is 8mm, the maximum allowable error of the height of each measuring point in the width direction is 3mm, and adjusting the elevation of the angle iron track 8 if the measured value exceeds the error after measurement; the retests must not be the surveyors when laying the track.
Concrete is poured in the parallel direction of the angle iron track 8, the pouring height is flush with the upper edge of the angle iron track 8, the length of the selected scraping bar 15 is 2000mm, the scraping bar 15 is made of aluminum alloy, the scraping bar 15 is placed on the angle iron track 8, the scraping bar 15 is pushed along the angle iron track 8 to scrape the concrete, and wood is used for leveling after scraping; and after the concrete of the bottom plate 4 is poured for 2-3 hours, pouring the concrete at the position of the guide wall 5 before the concrete is initially set.
f. Take out track
Cutting off binding wires at two ends of the angle iron rail 8 before the initial setting of the concrete, taking out the angle iron rail 8, and filling and leveling a gap between the support 9 and the short steel bar 10 when the concrete is not initially set; the binding wire can be recycled, and can be used for 3 times at most, if the angle iron rail 8 is deformed in use and must be replaced, and the angle iron rail 8 which is arranged is forbidden to be trampled.
g. Secondary leveling press polish
And (2) polishing and compacting by using an iron trowel or an electric calender, performing secondary polishing and compacting before final setting of the concrete, wherein the secondary polishing and compacting process requires polishing while measuring the surface flatness and elevation, and the secondary polishing and compacting process performs polishing on the position which does not meet the requirements so as to reduce the flatness and elevation errors.
Claims (1)
1. A construction method for leveling an overlong reinforced concrete bottom plate is characterized by comprising the following steps: the construction device for leveling the overlong reinforced concrete bottom plate comprises a plurality of groups of horizontally arranged bottom plate lower-layer reinforcing steel bars (11) and bottom plate upper-layer reinforcing steel bars (12) arranged right above the bottom plate lower-layer reinforcing steel bars (11), wherein vertical support struts (9) are spot-welded on the bottom plate lower-layer reinforcing steel bars (11) and the bottom plate upper-layer reinforcing steel bars (12), the upper ends of the support struts (9) are higher than the bottom plate upper-layer reinforcing steel bars (12), vertical short reinforcing steel bars (10) are fixed beside the support struts (9), the support struts (9) and the short reinforcing steel bars (10) form a mounting groove, and an angle iron rail (8) with the top flush with the surface of a precast bottom plate is fixed in the mounting groove; a circle of guide wall template and a positioning device for fixing the guide wall template are arranged on the periphery of the precast bottom plate, and the precast bottom plate also comprises a scraping bar (15) matched with the angle iron track (8); the positioning device comprises an outer batten (1) on the outer side of the guide wall template and an inner batten (2) on the inner side of the guide wall template, and the bottom of the inner batten (2) is 30mm higher than the surface of the precast bottom plate; the size of the angle iron track (8) is 25 mm multiplied by 3mm multiplied by 4000mm, the angle iron track (8) is horizontally arranged, and one right-angle side of the angle iron track faces upwards vertically;
firstly, laying a bottom plate lower layer steel bar (11), a bottom plate upper layer steel bar (12) and a guide wall steel bar and supporting a guide wall template, leveling along an embedded angle iron track (8) by using a scraping bar (15), penetrating and connecting a water stop steel plate (6) in the guide wall template, wherein the water stop steel plate (6) is arranged 500mm above the bottom surface of the bottom plate (4);
the method specifically comprises the following steps:
a. guide wall template support
After the installation of the bottom plate and the guide wall reinforcing steel bars is finished, a guide wall template is erected on the periphery of the precast bottom plate, the guide wall template comprises a long guide wall template (1 a) on the outer side and short guide wall templates (1 b) which are arranged in the long guide wall template (1 a) and are spaced by a guide wall thickness, and the tops of the long guide wall template (1 a) and the short guide wall templates (1 b) are equal in height;
b. welding support
Laying a bottom plate lower layer steel bar (11) and a bottom plate upper layer steel bar (12), spot-welding a support (9) on the bottom plate lower layer steel bar (11) and the bottom plate upper layer steel bar (12), wherein the top end of the support (9) is higher than the bottom plate upper layer steel bar (12);
c. welding short steel bar
Vertically welding short steel bars (10) on the upper half part of a support (9), wherein welding spots are arranged at the height of the upper-layer steel bars (12) of the bottom plate, and the distance between the support (9) and the short steel bars (10) is matched with the single-side thickness of an angle iron track (8); determining the elevation of the top of the short steel bar (10) and the elevation of the top (14) of the precast bottom plate before welding the short steel bar (10), and according to the elevation of the top of the short steel bar (10 = the elevation of the top of the bottom plate-the unilateral thickness of an angle iron track (8); the distance between adjacent angle iron rails (8) is 1900mm, and the length of the scraping bar (15) is 2000 mm; the distance between the support supports (9) at the two ends of the single angle iron track (8) and the two ends of the angle iron track (8) is 500mm, and the distance between the rest support supports (9) is 1500 mm;
d. track for installation leveling
Inserting one single side of each angle iron track (8) into a gap between the support (9) and the short steel bar (10), enabling the top of the short steel bar (10) to be in contact with the inner single-side plane of the angle iron track (8), and fixing the two ends of each angle iron track (8) with the upper-layer steel bar (12) of the bottom plate through binding wires;
e. casting concrete and leveling
Concrete is poured in the direction parallel to the angle iron track (8), after the concrete is poured, the scraping bar (15) is placed on the angle iron track (8) and is pushed to scrape the concrete along the angle iron track (8), and after the concrete is scraped, the scraping bar is used for leveling; pouring concrete at the position of the guide wall (5) after pouring concrete at the bottom plate (4) for 2-3 h; before concrete pouring, the top standard height of each angle iron track (8) is measured again, and the angle iron tracks (8) which do not meet the requirements are adjusted;
f. take out track
Cutting off binding wires at two ends of the angle iron rail (8) before initial setting of concrete, and taking out the angle iron rail (8);
g. secondary leveling press polish
And (3) polishing and compacting by using an iron trowel or an electric calender, performing secondary polishing and compacting before the concrete is finally set, and polishing and compacting the parts which do not meet the requirements in the secondary polishing and compacting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910663094.3A CN110453726B (en) | 2019-07-22 | 2019-07-22 | Construction device and method for leveling overlong reinforced concrete bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910663094.3A CN110453726B (en) | 2019-07-22 | 2019-07-22 | Construction device and method for leveling overlong reinforced concrete bottom plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110453726A CN110453726A (en) | 2019-11-15 |
| CN110453726B true CN110453726B (en) | 2021-09-14 |
Family
ID=68482975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910663094.3A Active CN110453726B (en) | 2019-07-22 | 2019-07-22 | Construction device and method for leveling overlong reinforced concrete bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110453726B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112814369A (en) * | 2020-12-30 | 2021-05-18 | 中国建筑第八工程局有限公司 | Horizontal construction joint formwork device for cast-in-place reinforced concrete wall and construction method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059343A (en) * | 1999-08-25 | 2001-03-06 | Honma Kogyo Kk | Concrete placement method for forming slab, and support tool for guide rail used therefor |
| US6412185B1 (en) * | 2000-07-07 | 2002-07-02 | Oscar Mills | Tile laying gauge and leveling assembly |
| CN103161298A (en) * | 2011-12-14 | 2013-06-19 | 五冶集团上海有限公司 | Production method of large area concrete terrace |
| CN203462765U (en) * | 2013-09-24 | 2014-03-05 | 中建三局建设工程股份有限公司 | Floor flatness control system of large-area concrete building |
| CN105421776A (en) * | 2015-11-09 | 2016-03-23 | 中冶天工集团有限公司 | Device for leveling super-flat floor and method for conducting super-flat floor construction through device |
| CN208310244U (en) * | 2018-05-04 | 2019-01-01 | 远洋国际建设有限公司 | A kind of device for control panel surface evenness |
-
2019
- 2019-07-22 CN CN201910663094.3A patent/CN110453726B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001059343A (en) * | 1999-08-25 | 2001-03-06 | Honma Kogyo Kk | Concrete placement method for forming slab, and support tool for guide rail used therefor |
| US6412185B1 (en) * | 2000-07-07 | 2002-07-02 | Oscar Mills | Tile laying gauge and leveling assembly |
| CN103161298A (en) * | 2011-12-14 | 2013-06-19 | 五冶集团上海有限公司 | Production method of large area concrete terrace |
| CN203462765U (en) * | 2013-09-24 | 2014-03-05 | 中建三局建设工程股份有限公司 | Floor flatness control system of large-area concrete building |
| CN105421776A (en) * | 2015-11-09 | 2016-03-23 | 中冶天工集团有限公司 | Device for leveling super-flat floor and method for conducting super-flat floor construction through device |
| CN208310244U (en) * | 2018-05-04 | 2019-01-01 | 远洋国际建设有限公司 | A kind of device for control panel surface evenness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110453726A (en) | 2019-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103556817B (en) | Side wall concrete construction method employing side wall trolley | |
| CN108487630B (en) | Concrete sill prefabricated assembly construction method | |
| CN112031374A (en) | Construction method of basement large-area terrace | |
| CN110453726B (en) | Construction device and method for leveling overlong reinforced concrete bottom plate | |
| CN114482529A (en) | Back-jacking construction method for post-cast strip galvanized steel pipe support frame | |
| CN111549952A (en) | Installation foundation of GIS equipment | |
| CN106013803A (en) | Installing process of aluminum formwork | |
| CN207004065U (en) | A kind of piping shaft reserves thimble assembly | |
| CN113373722B (en) | Paper machine installation method based on total station measurement | |
| CN116290911A (en) | Post-pouring belt supporting device and construction method thereof | |
| CN113001752B (en) | Positioning adjustment method for beam bottom embedded steel plate | |
| CN210117921U (en) | Shear wall structure tunnel formwork | |
| CN209942156U (en) | Smoke air duct mounting structure | |
| CN109629447B (en) | Variable cross-section cast-in-situ box girder construction and concrete pouring method | |
| CN113005903A (en) | Grouting sleeve connection type bent cap assembling construction process | |
| CN112482322A (en) | Split gate pier construction complete device and construction process | |
| CN106498975B (en) | Wet type paper machine room anchor bolt installation method | |
| CN204455878U (en) | Urban interchange maintenance is used can length travel temporary support system | |
| CN215366862U (en) | Fetal membrane device of prefabricated T roof beam end | |
| CN217480231U (en) | Plate-type tower crane foundation construction structure combined with raft | |
| CN213979025U (en) | Steel column rag bolt is pre-buried installs fixing device | |
| CN218711889U (en) | Road plate and assembled road | |
| CN221681568U (en) | Frame type road pouring template | |
| CN215671150U (en) | Concrete one-time forming ground elevation control tool | |
| CN110258341B (en) | Construction method for improving smoothness of longitudinal ribs of curved section of bridge sidewalk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |