CN113668885A - Plastering anti-cracking construction method for large-area arc-shaped stand - Google Patents
Plastering anti-cracking construction method for large-area arc-shaped stand Download PDFInfo
- Publication number
- CN113668885A CN113668885A CN202110993658.7A CN202110993658A CN113668885A CN 113668885 A CN113668885 A CN 113668885A CN 202110993658 A CN202110993658 A CN 202110993658A CN 113668885 A CN113668885 A CN 113668885A
- Authority
- CN
- China
- Prior art keywords
- stand
- tread
- plastering
- grandstand
- construction method
- 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.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/20—Tools or apparatus for applying mortar
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/104—Treads
- E04F11/16—Surfaces thereof; Protecting means for edges or corners thereof
- E04F11/163—Protecting means for edges or corners
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/104—Treads
- E04F11/16—Surfaces thereof; Protecting means for edges or corners thereof
- E04F11/17—Surfaces
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/30—Safety or protective measures preventing damage to building parts or finishing work during construction against mechanical damage or dirt, e.g. guard covers of stairs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H3/00—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons
- E04H3/10—Buildings or groups of buildings for public or similar purposes; Institutions, e.g. infirmaries or prisons for meetings, entertainments, or sports
- E04H3/12—Tribunes, grandstands or terraces for spectators
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Road Paving Structures (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a plastering anti-cracking construction method for a large-area arc-shaped stand, and belongs to the technical field of building construction engineering. The invention sets the trapezoid partition strips to symmetrically partition the large-area arc stand, and carries out construction aiming at the tread and the kick surface respectively, wherein the tread is fully paved with a coarse stalk steel plate net, the kick surface is fully paved with a fine stalk steel wire net, the tread is poured by adopting commercial concrete, and the kick surface is leveled, whitewashed and smoothed in a layering way by adopting self-mixing mortar. The construction method can effectively reduce the cracking problem of the stand plastering layer, ensure the integrity, construction progress and quality of the stand step plastering, and ensure the primary qualified rate of the mortar surface layer.
Description
Technical Field
The invention belongs to the technical field of building construction engineering, and particularly relates to a plastering anti-cracking construction method for a large-area arc stand.
Background
With the increasing enhancement of the national atmosphere of ' national fitness sports ', stadiums are built in cities of the national city and county level at present, and the stadiums, the stadiums and the swimming pools for designing spectators ' stands are more.
The design has large tracts of land arc stand mostly in the stadium, and among the current arc stand construction process of plastering, because the mountain sand gradation of adoption is bad, the mud content is slightly higher, and a great deal of reasons such as particle shape is irregular cause hollowing, fracture phenomenon very easily, leads to the later stage to need to reprocess in a large number, and the reprocess expense is high, and wastes time and energy. In addition, in the existing stand plastering construction process, waterproof paint is usually smeared on an original structural layer, and then cement mortar is painted, so that a coating isolation layer is formed between a plastering layer and the structural layer, and the hollowing rate of a plastering surface layer is easily increased. In addition, in the plastering construction process of the existing arc-shaped stand, large-area construction is generally carried out at the same time, and the overall construction efficiency is lower.
Therefore, how to improve the existing plastering construction process for the arc-shaped grandstand to effectively prevent the grandstand from hollowing and cracking becomes one of the technical problems to be solved at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a plastering anti-cracking construction method for a large-area arc stand, which effectively solves the problems that the surface layer of the large-area outdoor arc stand is easy to crack and hollowly and the later repair cost is high.
The present invention achieves the above-described object by the following technical means.
A plastering anti-cracking construction method for a large-area arc-shaped stand comprises the following steps:
step 1: determining an optimal design construction scheme of the design structure of the stand;
step 2: cleaning and repairing the stand;
and step 3: dividing the stand into regions, measuring and paying off;
and 4, step 4: fixing a separation strip by using cement mortar in a ratio of 1:1 to serve as a separation seam, wherein the separation strip is an inverted trapezoidal plastic separation strip with an opening at the top; the principle of the separation seam is as follows: separating seams are arranged on two sides of the boarding step of the stand, and a plurality of separating seams with intervals of 4m are symmetrically arranged along the middle position of the stand;
and 5: spraying slurry on the skirt surface of the stand, and after the slurry spraying is finished, carrying out moisture preservation and maintenance on the skirt surface for 7 days;
step 6: fully laying a steel wire mesh after cleaning the kicking surface, fully laying a steel plate mesh after cleaning the tread surface, wherein the steel wire mesh exceeds the external corner of the stand by 15cm, and the steel plate mesh is lapped with the part of the steel wire mesh exceeding the external corner of the stand;
and 7: plastering a skirt surface; 1:3 cement mortar bottom ash with the thickness of 15mm is smeared on the skirt surface, 1:2 cement mortar surface ash with the thickness of 10mm is continuously smeared after the bottom ash is initially set, primary polishing is carried out, and secondary polishing is carried out at night; forming an external corner protection corner at the external corner when the facing is plastered, wherein the thickness of the external corner protection corner is consistent with that of the tread concrete layer; before the finishing setting of the facing mortar, the external corner protection angle is repaired into a chamfer angle structure with the height of 20mm, the thickness of 20mm and the inclination angle of 45 degrees;
and 8: pouring concrete on the tread; carrying out secondary cleaning on the tread, fully brushing an interface agent at the external corner protective corner, two sides of the partition strip and the upper surface of the tread, pouring C20 fine-stone concrete with the thickness of 45mm on the tread by using an automobile pump within 24 hours after the finishing setting of the facing mortar, vibrating by using a flat vibrator and grinding the surface by using a concrete grinder to ensure that no underoscillation but no over-oscillation is realized; meanwhile, the concrete finished surface of the tread is made into a 1% slope form with high inside and low outside;
and step 9: and carrying out full-coverage maintenance on the stand.
Further, the stage-looking repair principle in the step 2 is as follows:
aiming at the tread: when the thickness deviation between the tread structure layer and the building finish surface is less than or equal to 40mm, chiseling surface layer concrete of the tread structure layer, and then carrying out surface layer construction again;
aiming at the kicking surface: when the thickness deviation between the skirting structure layer and the building finish surface is less than 25mm, chiseling the surface of the skirting structure layer deeply, and then performing cement mortar painting construction to realize repair; when the thickness deviation between the skirt surface structure layer and the building finish surface is 40-50 mm, arranging two layers of steel plate meshes and painting cement mortar to realize repair; when the thickness deviation between the skirt surface structure layer and the building finish surface is larger than 50mm, C30 fine stone concrete with the bidirectional reinforcing mesh is adopted for repairing, and the distance between the connection points of the bidirectional reinforcing mesh is smaller than or equal to 500 mm.
Further, the specific process of the stand partition in the step 3 is as follows: the stand is symmetrically partitioned along the middle of the arc-shaped stand, and the maximum width of the top of the stand in each area is 4 m.
Further, the specific process of the stand cleaning in the step 3 includes: cleaning the garbage, soil, floating dust, cement paste and aged parts in the stand and the bin dividing joint by using a cleaning tool; and the organic solvent is used for removing paint and oil stains on the stand.
Further, in the step 3, the specific process of measuring the pay-off line is as follows: according to the dimension review result of the solid structure of the stand and the drawing design, 3 elevation through lines are respectively pulled from the top to the bottom of the stand in each area, wherein 1 line is respectively arranged at two sides of each area, 1 line is arranged in the middle of each area, 1 line is respectively arranged at two sides of each area, and 1 line is arranged in the middle of each area; and (3) making gray cakes, uniformly placing the gray cakes on the tread at intervals of 1m, and measuring and placing a stand width control line by using the gray cakes according to the stand width designed by a drawing and the actual stand width rechecked on site.
Further, in the step 4, the width of the top of the separating strip is 24mm, the width of the bottom of the separating strip is 18mm, and the depth of the separating strip is 22 mm; the inboard and the top of stand initial row railing bottom sideboard all set up the width and be 20mm, the degree of depth is 5 mm's plastic strip, and the plastic strip is with the branch parting bead through connection on the stand, keeps aliging.
Further, in the step 5, the concrete process of spraying the stand kicking surface is as follows: mixing cement, glue and sand in a ratio of 1:1:0.5, uniformly stirring, and then spraying slurry on the skirting by adopting a broom or an air compressor; the cement is P.O.32.5 ordinary portland cement, the sand is medium coarse sand, and the fineness modulus of the sand is 2.3-2.5.
Further, in the step 6, the mesh size of the steel wire mesh is 10 × 10mm, the thickness of the steel wire mesh stems is 0.5mm, the mesh size of the steel plate mesh is 30 × 30mm, the thickness of the steel plate stems is 1mm, the steel wire mesh and the steel plate mesh are fixed through the shooting nails or the cement nails, and the number of the shooting nails or the cement nails in each square meter is 6-8.
Further, in the step 9, the full-coverage curing is as follows: and (3) curing the full-coverage plastic film after the final setting of the facing mortar, fully paving the geotextile after the final setting of the tread concrete for moisturizing and curing, wherein the curing time is over 7 days, and meanwhile, continuously watering and curing in high-temperature weather.
Furthermore, after the stands are partitioned, the stands in each area are sequentially subjected to the skirting plastering construction according to the construction sequence from the top to the bottom, and after the skirting plastering construction is finished, the step concrete construction is sequentially performed from the top to the bottom; the building finish surface of the kicking surface and the building finish surface of the tread are respectively flush with the tops of the corresponding separation strips.
The invention has the following beneficial effects:
according to the construction method, the large-area arc grandstand is symmetrically partitioned by arranging the trapezoid partition strips, construction is respectively carried out on the tread surface and the skirt surface, the tread surface is poured by commercial concrete, the skirt surface is leveled, plastered and smoothed by self-mixing mortar in a layering manner, the skirt surface is completely covered and maintained by a plastic film after plastering construction, and the tread surface concrete is completely covered, moisturized and maintained by geotextile after final setting.
Drawings
FIG. 1 is a flow chart of the construction method of the present invention;
FIG. 2 is a schematic view of the stand elevation pay-off of the present invention;
FIG. 3 is a partial schematic view of the parting line of the present invention;
FIG. 4 is a schematic view of a tread division bar according to the present invention;
FIG. 5 is a schematic view of a kick surface dividing strip according to the present invention;
FIG. 6 is a schematic diagram of the laying of the steel wire mesh and the steel plate mesh according to the present invention;
FIG. 7 is a schematic view of the external corner protector of the present invention;
FIG. 8 is a large drawing of the painting of the kick surface and the tread of the invention.
In the figure: 1-tread; 2-kicking; 3-ash cake; 4-elevation line passing; 5-a dividing strip; 6-getting on step; 7-steel wire mesh; 8-steel plate net; 9-external corner protection; 10-chamfering.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
The construction method is suitable for large-area arc-shaped stand step plastering construction projects, and particularly has good application prospects in construction projects of outdoor large-area arc-shaped stand step plastering anti-cracking construction projects of stadium buildings, construction projects with high requirements on stand mortar surface quality and construction projects with excellent project quality in the later period. The specific construction method is shown in fig. 1, and comprises the following steps:
step 1: before actual construction, an organization and technology department carries out optimal design of drawings and a construction scheme on a stand design structure;
step 2: cleaning and repairing the stand;
step 2.1: the method comprises the following steps that tools such as an iron shovel, a broom, a high-pressure water gun, a dust collector and the like are utilized to clean garbage, soil, floating dust, cement paste and aged parts in a stand and a sub-bin seam; removing paint or oil stain by using an organic solvent (xylene or toluene);
step 2.2: the stand structural layer is by cast-in-place fashioned large-scale stair column structure of concrete, because the stand is large tracts of land arc structure, pours the construction and accomplishes the back, can have the elevation deviation, influences follow-up construction, consequently need carry out the construction once more to it and repair, specific repair principle as follows:
for tread 1: in actual construction, the thickness deviation between the tread 1 structural layer and a building finish surface is required to be ensured to be more than 40mm, and sufficient construction space is provided for subsequent tread 1 surface layer construction; and when the thickness deviation between the structural layer of the tread 1 and the building finish surface is less than or equal to 40mm, chiseling the surface concrete of the structural layer of the tread 1, and then carrying out surface construction again.
Aiming at the kicking surface 2: when the thickness deviation between the structural layer of the skirt surface 2 and the finished building surface is less than 25mm, chiseling the surface of the structural layer of the skirt surface 2 deeply, and then performing cement mortar painting construction to realize repair; when the thickness deviation between the structural layer of the skirt surface 2 and the building finish surface is 40-50 mm, arranging two layers of steel plate meshes and painting cement mortar to realize repair; when the thickness deviation between the structural layer of the skirt surface 2 and the finished building surface is larger than 50mm, C30 fine stone concrete with the bidirectional reinforcing mesh is adopted for repairing, the connection reliability of the bidirectional reinforcing mesh is ensured, and the distance between connection points is smaller than or equal to 500 mm.
And measuring, paying off and positioning according to the building size of the stand, making an elevation control line and a horizontal position line of each layer of stand, and dividing the reserved positions of the deformation joints.
And step 3: measuring and paying off;
step 3.1: firstly, partitioning the whole stand: symmetrically partitioning along the center of the arc-shaped stand to ensure that the maximum width of the top of the stand in each area is 4 m; as shown in fig. 2, according to the dimension review result of the solid structure of the stand and the drawing design, 3 elevation through lines 4 (1 line on each side of the area and 1 line in the middle of the area) are respectively pulled from the top to the bottom of the stand in each area, the elevation of the tread 1 is completed by using a laser planometer to assist in measuring and releasing the tread 1 according to the elevation through lines 4, and the partial repair of the tread 1 is carried out;
step 3.2: manufacturing a plurality of gray cakes 3, uniformly placing the gray cakes on the tread 1 at intervals, designing the width of a stand according to a drawing, combining the actual stand width rechecked on site, and measuring and placing a stand width control line by using the gray cakes 3; because the stand is the arc, the stand width is difficult along the arc direction to the accuse, and ash cake 3 needs arrange according to 1m interval, ensures that the stand width size accomplishes accurate the accuse.
And 4, step 4: setting a separation seam;
as shown in fig. 3, the principle of the present invention is that the separation gap is arranged as follows: both sides of the boarding step 6 of the stand are provided with separation seams, and the rest parts are symmetrically provided with a plurality of separation seams along the middle position of the stand according to the principle of 4m intervals;
as the plastering layer of the stand is thicker, and meanwhile, the drainage of the outdoor stand is considered, and the leakage caused by the accumulation of rainwater is avoided, the invention utilizes 1:1 cement mortar to fix the separating strips 5 shown in figures 4 and 5 as separating seams, the separating strips 5 are inverted trapezoidal plastic separating strips 5 with openings at the tops, the widths of the tops of the separating strips 5 are 24mm, the widths of the bottoms of the separating strips are 18mm, and the depths of the separating strips are 22 mm; the inboard and the top of stand initial railing bottom sideboard all set up the width and be 20mm, the degree of depth is 5 mm's plastic strip, and plastic strip and 5 through connections of the division strip on the stand keep aligning, guarantee the holistic aesthetic property of stand.
And 5: guniting the stand skirt 2;
mixing and uniformly stirring cement, glue and sand in a ratio of 1:1:0.5, then manually throwing slurry to the skirt 2 by using a broom or spraying slurry to the skirt 2 by using an air compressor, wherein during the slurry spraying process, the slurry spraying forming is performed by uniformly arranging slurry points, so that the missing spraying and less spraying are avoided; the cement is ordinary portland cement (P.O.32.5), the sand is medium coarse sand, and the fineness modulus of the sand is 2.3-2.5;
after the guniting is finished, the base 2 is moisturized and maintained for 7 days by using a spraying kettle, and the guniting strength is ensured.
Step 6: as shown in fig. 6, a steel wire mesh 7 and a steel plate mesh 8 are laid on a stand;
step 6.1: fully paving a steel wire mesh 7 after cleaning the skirt surface 2, wherein the mesh size of the steel wire mesh 7 is 10 multiplied by 10mm, the stem thickness of the steel wire mesh 7 is 0.5mm, fixing the steel wire mesh 7 on the skirt surface 2 by utilizing shooting nails or cement nails, wherein the number of the shooting nails or the cement nails in each square meter is 6-8, and meanwhile, ensuring that the steel wire mesh 7 of the skirt surface 2 exceeds the external corner of the stand by 15 cm;
step 6.2: the tread 1 is fully paved with steel plate nets 8 after being cleaned, the mesh size of the steel plate nets 8 is 30 multiplied by 30mm, the stem thickness of the steel plate nets 8 is 1mm, the number of the shooting nails or the cement nails used for fixing the steel plate nets 8 on the tread 1 in each square meter is 6-8, meanwhile, the steel plate nets 8 are in lap joint with the steel wire meshes 7, and the effective lap joint length is not less than 15 cm.
And 7: plastering the skirt surface 2;
plastering of the skirting 2 needs to be carried out in a high-temperature season, the construction time is usually 6-9 months, and after the grandstand is partitioned, the grandstand skirting 2 plastering and plastering operation is sequentially carried out on each regional grandstand according to the construction sequence from the top to the bottom;
firstly, 1:3 cement mortar bottom ash with the thickness of 15mm is smeared on a skirt surface 2, after the bottom ash is initially set, 1:2 cement mortar surface ash with the thickness of 10mm is continuously smeared and subjected to primary light collection, a manager stops nearby in the whole process of the light collection process to forbid workers from spreading dry cement for auxiliary light collection, and meanwhile, a secondary light collection process is adopted, the secondary light collection is carried out at night, and the water loss speed of a surface layer is reduced; after the secondary light collection is finished, the building finishing surface of the skirt surface 2 is flush with the tops of the corresponding separation strips 5, so that the integral attractiveness of the stand is ensured.
As shown in fig. 7, in the process of plastering and rendering the skirt surface 2, 1:3 cement mortar and 1:2 cement mortar are utilized to form an external corner angle bead 9 at the external corner, and the thickness of the external corner angle bead 9 is consistent with that of the concrete layer of the tread 1; as shown in figure 8, before the mortar of the tread 2 is finally set, an external corner angle 9 at the joint of the tread 1 and the tread 2 is manually repaired into a chamfer angle 10 structure with the height of 20mm, the thickness of 20mm and the inclination angle of 45 degrees, and the widths of the bevels of the chamfer angles 10 are ensured to be consistent, and the deviation range is within +/-2 mm.
And 8: pouring concrete on the tread 1;
after the skirting 2 of each area is completely painted from top to bottom in sequence, constructing the concrete of the tread 1 from top to bottom in sequence; before pouring concrete on the tread 1, firstly, secondarily cleaning the tread 1, simultaneously brushing an interface agent on the external corner angle bead 9, two sides of the partition strip 5 and the upper surface of the tread 1, and then arranging a steel wire mesh 7 and a steel wire mesh 8 on the external corner angle bead 9 to ensure that the steel wire mesh 8 and the steel wire mesh 7 are effectively lapped and the steel wire mesh 7 is arranged in the middle;
within 24 hours after the mortar of the skirt surface 2 is finally set, C20 fine-stone concrete with the thickness of 45mm is poured on the tread surface 1 by using an automobile pump, the slump of the C20 fine-stone concrete is about 170mm, and the vibration is carried out by using a flat vibrator and a concrete polisher to grind the surface, so that the vibration is ensured not to be insufficient but not to be over-vibrated; meanwhile, the concrete finished surface of the tread 1 is made into a 1% slope form with high inside and low outside, so that the concrete finished surface of the tread 1 is ensured to be flooded towards the external corner, and meanwhile, the building finished surface of the tread 1 is ensured to be flush with the top of the corresponding partition strip 5, and the integral attractiveness of the stand is ensured.
And step 9: full-coverage maintenance;
curing the full-coverage plastic film immediately after the mortar of the skirt surface 2 is finally set, fully paving geotextile on the tread surface 1 immediately after the concrete is finally set for moisture preservation and curing, wherein the curing time is over 7 days, and the seamless butt joint of the curing work and the final setting process is ensured so as to control the generation of cracks and the development of local cracks; and in summer, continuous watering maintenance is required under high-temperature weather.
The mud content of the raw material sand used in the construction method is less than or equal to 2 percent, and the mud block content is less than or equal to 0.5 percent.
The present invention is not limited to the above-described embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. A plastering anti-cracking construction method for a large-area arc-shaped stand is characterized by comprising the following steps:
step 1: determining an optimal design construction scheme of the design structure of the stand;
step 2: cleaning and repairing the stand;
and step 3: dividing the stand into regions, measuring and paying off;
and 4, step 4: fixing a separation strip (5) by using cement mortar in a ratio of 1:1 to serve as a separation seam, wherein the separation strip (5) is an inverted trapezoidal plastic separation strip (5) with an open top; the principle of the separation seam is as follows: separating seams are arranged on two sides of the boarding step (6) of the stand, and a plurality of separating seams with intervals of 4m are symmetrically arranged along the middle position of the stand;
and 5: spraying the stand skirting (2), and after spraying, carrying out moisture preservation and maintenance on the skirting (2) for 7 days;
step 6: fully laying a steel wire mesh (7) after cleaning the kicking surface (2), fully laying a steel plate mesh (8) after cleaning the tread (1), wherein the steel wire mesh (7) exceeds the external corner of the stand by 15cm, and the steel plate mesh (8) is overlapped with the part of the steel wire mesh (7) exceeding the external corner of the stand;
and 7: plastering the kicking surface (2); 1:3 cement mortar bottom ash with the thickness of 15mm is smeared on the skirt surface (2), 1:2 cement mortar surface ash with the thickness of 10mm is continuously smeared after the bottom ash is initially set, primary polishing is carried out, and secondary polishing is carried out at night; when the skirting (2) is plastered, an external corner angle bead (9) is formed at the external corner, and the thickness of the external corner angle bead (9) is consistent with that of the concrete layer of the tread (1); before the mortar of the skirt surface (2) is finally set, an external corner protection angle (9) is repaired into a chamfer angle (10) structure with the height of 20mm, the thickness of 20mm and the inclination angle of 45 degrees;
and 8: pouring concrete on the tread (1); cleaning the tread (1) for the second time, fully brushing an interface agent at the position of an external corner protective corner (9), two sides of a partition strip (5) and the upper surface of the tread (1), pouring C20 fine stone concrete with the thickness of 45mm on the tread (1) by using an automobile pump within 24 hours after the mortar of the tread (2) is finally set, vibrating by using a flat vibrator and grinding the surface by using a concrete polisher to ensure that no undervibration is caused but no excessive vibration is caused; meanwhile, the concrete finished surface of the tread (1) is made into a 1% slope form with high inside and low outside;
and step 9: and carrying out full-coverage maintenance on the stand.
2. The plastering anti-cracking construction method for the large-area arc grandstand according to claim 1, wherein the grandstand repairing principle in the step 2 is as follows:
for the tread (1): when the thickness deviation between the structural layer of the tread (1) and the building finish surface is less than or equal to 40mm, chiseling the surface concrete of the structural layer of the tread (1), and then carrying out surface construction again;
for a riser (2): when the thickness deviation between the structural layer of the skirt surface (2) and the finished building surface is less than 25mm, chiseling the surface of the structural layer of the skirt surface (2) deeply, and then performing cement mortar painting construction to realize repair; when the thickness deviation between the structural layer of the skirt surface (2) and the finished building surface is 40-50 mm, arranging two layers of steel plate meshes and painting cement mortar to realize repair; when the thickness deviation between the structural layer of the skirt surface (2) and the finished building surface is more than 50mm, C30 fine stone concrete with the bidirectional reinforcing mesh is adopted for repairing, and the distance between the connection points of the bidirectional reinforcing mesh is less than or equal to 500 mm.
3. The plastering anti-cracking construction method for the large-area arc grandstand according to claim 1, wherein the specific process of the grandstand partition in the step 3 is as follows: the stand is symmetrically partitioned along the middle of the arc-shaped stand, and the maximum width of the top of the stand in each area is 4 m.
4. The plastering anti-cracking construction method for the large-area arc grandstand according to claim 1, wherein the specific process of the grandstand cleaning in the step 3 comprises the following steps: cleaning the garbage, soil, floating dust, cement paste and aged parts in the stand and the bin dividing joint by using a cleaning tool; and the organic solvent is used for removing paint and oil stains on the stand.
5. The plastering anti-cracking construction method for the large-area arc-shaped grandstand according to claim 1, wherein in the step 3, the specific measurement and setting-out process comprises the following steps: according to the dimension review result of the solid structure of the stand and the drawing design, 3 elevation through lines (4) are respectively pulled from the top to the bottom of the stand in each area, wherein 1 line is respectively arranged at two sides of each area, 1 line is arranged in the middle of each area, 1 line is respectively arranged at two sides of each area, and 1 line is arranged in the middle of each area; and (3) making gray cakes (3), uniformly placing the gray cakes (3) on the tread (1) at intervals of 1m, and measuring and placing a stand width control line by using the gray cakes (3) according to the stand width designed by a drawing and the actual stand width rechecked on site.
6. The plastering anti-cracking construction method for the large-area arc grandstand according to claim 1, wherein in the step 4, the width of the top of the parting strip (5) is 24mm, the width of the bottom is 18mm, and the depth is 22 mm; the inboard and the top of stand initial row railing bottom sideboard all set up the width and be 20mm, the degree of depth is 5 mm's plastic strip, and plastic strip and division strip (5) through connection on the stand keep aliging.
7. The plastering anti-cracking construction method for the large-area arc grandstand according to claim 1, wherein in the step 5, the concrete process of spraying the grandstand skirt (2) is as follows: mixing and stirring cement, glue and sand uniformly in a ratio of 1:1:0.5, and then spraying the kick surface (2) by adopting a broom or an air compressor; the cement is P.O.32.5 ordinary portland cement, the sand is medium coarse sand, and the fineness modulus of the sand is 2.3-2.5.
8. The plastering anti-cracking construction method for the large-area arc-shaped grandstand according to claim 1, wherein in the step 6, the mesh size of the steel wire mesh (7) is 10 x 10mm, the stem thickness of the steel wire mesh (7) is 0.5mm, the mesh size of the steel plate mesh (8) is 30 x 30mm, the stem thickness of the steel plate mesh (8) is 1mm, the steel wire mesh (7) and the steel plate mesh (8) are fixed through shooting nails or cement nails, and the number of the shooting nails or the cement nails in each square meter is 6-8.
9. The plastering anti-cracking construction method for the large-area arc-shaped grandstand according to claim 1, wherein in the step 9, the full-coverage maintenance comprises the following steps: and curing the full-coverage plastic film after the mortar of the skirt surface (2) is finally set, fully paving geotextile on the tread surface (1) after the concrete is finally set for moisture preservation and curing, wherein the curing time is over 7 days, and meanwhile, continuously watering and curing in high-temperature weather.
10. The plastering anti-cracking construction method for the large-area arc grandstand according to claim 1, characterized in that after the grandstand is partitioned, the skirting (2) plastering construction is carried out on each regional grandstand in sequence according to the construction sequence from the top to the bottom, and after the plastering construction of the skirting (2) is completed, the concrete construction of the tread (1) is carried out in sequence from the top to the bottom; the building finish surface of the kicking surface (2) and the building finish surface of the tread (1) are respectively flush with the tops of the corresponding separating strips (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993658.7A CN113668885B (en) | 2021-08-27 | 2021-08-27 | Plastering anti-cracking construction method for large-area arc-shaped stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993658.7A CN113668885B (en) | 2021-08-27 | 2021-08-27 | Plastering anti-cracking construction method for large-area arc-shaped stand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113668885A true CN113668885A (en) | 2021-11-19 |
| CN113668885B CN113668885B (en) | 2022-12-09 |
Family
ID=78547078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110993658.7A Active CN113668885B (en) | 2021-08-27 | 2021-08-27 | Plastering anti-cracking construction method for large-area arc-shaped stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113668885B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961363A (en) * | 2022-05-05 | 2022-08-30 | 上海宝冶集团有限公司 | Method for constructing steps at deformation joint of stand structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291093A (en) * | 2013-05-31 | 2013-09-11 | 上海宝冶集团有限公司 | Stepped stand building surface layer laying method |
| CN103541549A (en) * | 2013-10-31 | 2014-01-29 | 中国建筑第八工程局有限公司 | Stepwise construction method of decorative base layers of stadium stand tread |
| CN110835989A (en) * | 2019-11-26 | 2020-02-25 | 上海宝冶集团有限公司 | Construction method for stair step and platform cement mortar plastering |
| CN111535623A (en) * | 2020-05-11 | 2020-08-14 | 中建一局集团建设发展有限公司 | Three-fold-line double-step precast concrete stand plate and design method |
-
2021
- 2021-08-27 CN CN202110993658.7A patent/CN113668885B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291093A (en) * | 2013-05-31 | 2013-09-11 | 上海宝冶集团有限公司 | Stepped stand building surface layer laying method |
| CN103541549A (en) * | 2013-10-31 | 2014-01-29 | 中国建筑第八工程局有限公司 | Stepwise construction method of decorative base layers of stadium stand tread |
| CN110835989A (en) * | 2019-11-26 | 2020-02-25 | 上海宝冶集团有限公司 | Construction method for stair step and platform cement mortar plastering |
| CN111535623A (en) * | 2020-05-11 | 2020-08-14 | 中建一局集团建设发展有限公司 | Three-fold-line double-step precast concrete stand plate and design method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114961363A (en) * | 2022-05-05 | 2022-08-30 | 上海宝冶集团有限公司 | Method for constructing steps at deformation joint of stand structure |
| CN114961363B (en) * | 2022-05-05 | 2024-01-30 | 上海宝冶集团有限公司 | Construction method for steps at deformation joints of stand structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113668885B (en) | 2022-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103276858B (en) | Drainage structure for inverted roof and construction method of drainage structure | |
| US8381483B1 (en) | Terrazzo process for existing concrete surfaces | |
| CN205077752U (en) | Roofing flashing waterproofing membrane of department brick wall protection architecture | |
| CN103470067A (en) | Transformation and construction method used for facing bare concrete of existing building outer wall | |
| CN108412093B (en) | Modern landscape decorative rammed earth wall and construction method thereof | |
| CN108868063A (en) | A kind of method for constructing terrace | |
| CN107489167A (en) | A kind of underground pipe gallery socket joint deformation joint structure and its construction method | |
| CN105649285A (en) | Construction method for heat insulation layer combined type exhaust hole of accessible roof | |
| CN106884535A (en) | A kind of construction technology of imitative stone material Self-leveling waterproof mortar | |
| CN102776897A (en) | Wash apron anti-settling anti-cracking construction method and structure | |
| CN111042570A (en) | Repairing construction method for fresh water brick wall of ancient building | |
| CN110206074A (en) | A kind of underground waterproof engineering construction technology | |
| CN114876117B (en) | Multi-gradient planting roof structure and construction method thereof | |
| CN113668885B (en) | Plastering anti-cracking construction method for large-area arc-shaped stand | |
| CN115538708A (en) | Construction method for reinforced soil-fixing grid of large-gradient planting inclined roof | |
| CN111058576A (en) | Construction method of assembled roof | |
| CN103572786A (en) | Pile head joint waterproof processing device and construction method thereof | |
| CN207974027U (en) | A kind of shape-setting clamp for concrete guardrail skin patching | |
| CN102767284B (en) | Semi-prefabricating construction process for concrete thin-wall lower return eave | |
| CN105089213A (en) | Water-proof construction method with advantages of energy conservation and environment protection for conventional roof | |
| CN211949245U (en) | Roof stone flashing structure | |
| CN111851939A (en) | Oil-seepage-preventing ground structure and construction method thereof | |
| CN113338335B (en) | Waterproof construction method for external corner of bottom plate of urban underground comprehensive pipe gallery | |
| CN112523028A (en) | Waterproof edge sealing construction method for joint of pit and groove of asphalt pavement | |
| CN220550395U (en) | Pavement structure suitable for road is built to ancient |
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 |