CN114737748A - Template for improving appearance quality of transformer substation main transformer firewall and construction method - Google Patents
Template for improving appearance quality of transformer substation main transformer firewall and construction method Download PDFInfo
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- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
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- 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
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
- E04H5/04—Transformer houses; Substations or switchgear houses
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a template and a construction method for improving appearance quality of a firewall of a main transformer of a transformer substation. The taper treatment of the tube head of the stay bolt tube of the template can effectively prevent slurry leakage, and adjacent sub-templates are spliced by adopting the mortise and tenon structure, so that the seam gap is reduced, the post-treatment difficulty is reduced, and the slurry leakage can be prevented. The invention adopts sectional construction to form flow construction, improves the turnover rate of the template and reduces the construction cost.
Description
Technical Field
The invention relates to a template and a construction method for improving appearance quality of a main transformer firewall of a transformer substation, and belongs to the field of construction of the main transformer firewall of the transformer substation.
Background
The construction of the cast-in-place concrete firewall is a key project of the construction of the transformer substation engineering, the construction of the cast-in-place firewall generally comprises two construction processes of one-step casting and combined steel formwork construction, the one-step casting construction has the disadvantages of more material investment and difficult formwork installation, the combined steel formwork construction is usually adopted at present, but the combined steel formwork construction has the defects that when the concrete of the upper section of the plate wall is poured, the slurry leakage pollutes the lower wall surface, the seam gap is large and difficult to eliminate, and the like.
Disclosure of Invention
The invention provides a template and a construction method for improving the appearance quality of a main transformer firewall of a transformer substation, and solves the problems of construction of a combined steel template in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a template for improving the appearance quality of a firewall of a main transformer of a transformer substation comprises two transverse templates which are arranged oppositely, wherein a longitudinal template is connected between opposite ends of the two transverse templates;
the transverse template is formed by splicing a plurality of sub-templates, the adjacent sub-templates are spliced by mortise and tenon structures, a row of split bolts penetrate between the upper parts and between the lower parts of the two opposite sub-templates, split bolts between the two sub-templates are sleeved with split bolt pipes, pipe heads of the split bolt pipes are conical, and the thick end of each split bolt pipe is attached to the corresponding sub-template.
A double-hook connector is arranged between the transverse formwork and the longitudinal formwork.
The inner sides of the upper part and the lower part of the sub-template are respectively provided with a through long flat iron used as a joint connecting line, and a split bolt penetrates through the through long flat iron.
And fillet lines are arranged at the connecting corners of the transverse template and the longitudinal template.
And the inner side panel of the sub-template is formed by one-time rolling.
A construction method for improving appearance quality of a firewall of a main transformer of a transformer substation comprises the following steps:
1) positioning and paying off and binding reinforcing steel bars;
2) mounting the firstiSegmenting a template; wherein, the first and the second end of the pipe are connected with each other,i=1, the template is a template for improving the appearance quality of a fire wall of a main transformer of a transformer substation;
3) to the firstiSelf-checking the segmented template, and if the self-checking is qualified, checking the segmented template to the firstiConcrete is poured in the segmented templates and vibrated;
4) after reaching the preset time, removingiSegmenting the template;
5) to the first castingiThe segmental firewall checks the impression quality, and if the impression quality is qualified, the segmental firewall checks the impression qualityiMaintaining the segmented firewall;
6) judging whether the main body of the firewall is poured or not, and if not, installingi=i+1 segmentation template, turn to 3), if the main part is poured and is accomplished, carry out seam gap and split bolt hole processing.
And if the impression quality is not qualified, repairing the poured segmented firewall.
The vibrating points are arranged in two rows, the distance between the first row and the transverse formwork close to the first row is consistent with the distance between the second row and the transverse formwork close to the second row, and the vibrating points of the first row and the vibrating points of the second row are distributed in a staggered mode.
The invention has the following beneficial effects: 1. according to the taper treatment of the tube head of the bolt pulling tube, slurry leakage can be effectively prevented, adjacent sub-templates are spliced by adopting the mortise and tenon structure, a seam gap is reduced, the post-treatment difficulty is reduced, and the slurry leakage can be prevented; 2. the transverse template is formed by splicing a plurality of sub-templates, and the small template sample turning construction is beneficial to controlling the construction precision, forming the flow construction and reducing the construction cost; 3. the panel is formed by one-step rolling, the surface is smooth, and the appearance quality of the poured firewall is improved; 4. the through long flat iron is arranged, can be used as a dividing strip between fire wall sections, is convenient for hiding split bolt holes, and is beneficial to improving the appearance quality of a poured fire wall; 5. the invention adopts sectional construction to form flow construction, thereby improving the turnover rate of the template and reducing the construction cost; 6. the template is self-checked before pouring, so that the construction precision is improved, and unnecessary reworking is avoided; 7. according to the invention, the appearance quality of the surface of the segmented firewall is checked after the template is removed, and the next construction process can be carried out after the template is unqualified and repaired, so that the surface color difference caused by repair can be effectively reduced, meanwhile, the construction quality defect problem can be summarized in time, the construction means can be adjusted in time, and the same problem in the next construction process can be avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of a template;
FIG. 2 is a top view of the die plate;
FIG. 3 is a schematic diagram of the connections between adjacent submodes;
FIG. 4 is an outer side view of a sub-template panel;
FIG. 5 is a schematic view of the junction of the transverse and longitudinal forms;
FIG. 6 is a flow chart of a construction method;
FIG. 7 is a schematic view of the distribution of vibration points;
fig. 8 is a construction diagram.
In the figure, 1, an inner keel, 2, an outer keel, 3, a through long flat iron, 4, a split bolt pipe, 5, a double-hook connector, 6, a sub template, 7, a longitudinal template, 8, a mortise and tenon structure, 9, a fillet line, 10, a mortise, 11, a tenon, 12, a stiffening rib, 13, an outer frame, 14 and a split bolt.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figures 1 and 2, the template is used for improving the appearance quality of a fire wall of a main transformer of a transformer substation, and is used for adopting fire wall segmentation construction, namely, the fire wall is poured in segments through the template. The formworks comprise two transverse formworks arranged opposite to each other, and a longitudinal formwork 7 is fixed between opposite ends of the two transverse formworks.
The transverse formwork is formed by splicing a plurality of sub-formworks 6, the number of the sub-formworks 6 is determined according to actual conditions, the mortise and tenon structure 8 of the drawing 3 is spliced between the adjacent sub-formworks 6, the mortise and tenon structure 8 comprises matched mortises 10 and tenons 11, and through the structure, the splicing gap of the adjacent sub-formworks 6 is generally smaller than 2mm, the post-processing difficulty is reduced, slurry leakage can be effectively prevented, and sand rise of concrete at the joint is avoided.
The sub-template 6 adopts small template sample turning construction, which is beneficial to controlling the construction precision, forming flow construction and reducing the construction cost, the sub-template 6 comprises a panel, the panel is formed by one-time rolling of special equipment, the surface is smooth, the improvement of the appearance quality of the poured firewall is facilitated, the panel adopts plasma cutting and carbon dioxide arc welding processes, and the length and width deviation of the panel is less than or equal to 2 mm.
As shown in fig. 4, the frame 13 is welded on the outer edge of the panel, the frame 13 is reinforced by flat steel, the size is 8mm × 80mm, the horizontal inner keel 1 is fixed on the panel in the frame 13, the inner keels 1 are uniformly distributed, the inner keel 1 is an 8# channel steel, the waist height is 80mm, the leg width is 43mm, the waist thickness is 5mm, and the longitudinal distance of the inner keel 1 is 300 mm. And a stiffening rib 12 is welded between the adjacent inner keels 1, the stiffening rib 12 is made of 5mm multiplied by 40mm flat steel, and the two sides are fully welded. The 12 outside limits of stiffening rib, 13 outside limits of frame and 1 outside limits of interior fossil fragments are located the coplanar, and welding fore-and-aft outer keel 2 on this plane, outer keel 2 evenly distributed, outer keel 2 adopt two 14a # channel-section steels, and the waist height is 140mm, and the leg is wide for 58mm, and the waist is thick for 6mm, is a whole through the welding of welding shim.
As shown in fig. 5, the upper inner side and the lower inner side of the sub-template 6 are both welded with the through-length flat iron 3 as a joint connecting line, that is, the through-length flat iron 3 is welded at the transverse joint, the width of the through-length flat iron 3 is 100mm, the thickness of the through-length flat iron is 6mm, a groove of 6mm × 100mm can be formed as a lattice dividing belt of the firewall segment after pouring and removing the mold, and the through-length flat iron 3 is ground into round corners.
A row of split bolts 14 penetrate between the upper portion and the lower portion of each two opposite sub-templates 6, the split bolts 14 are phi 20 deformed steel bars, a mode of six nuts and two gaskets is adopted, the vertical maximum distance is 2653mm, and the bolts are locked by double nuts to make up for the shortage of tension.
The split bolt pipe 4 is sleeved on the split bolt 14 between the two sub-templates 6, the pipe diameter is slightly larger than the split bolt 14, a PVC pipe with the pipe diameter of 22 mm-24 mm is generally selected, the pipe head of the PVC pipe is conical, the thick end of the PVC pipe is attached to the sub-template 6, and slurry leakage can be prevented through treatment of the conical head.
The through long flat iron 3 is also provided with holes in advance, the hole distance corresponds to the distance of the split bolts 14 and is 300mm, the through long flat iron is used for penetrating the split bolts 14, the holes of the split bolts 14 can be hidden in a grid belt after casting, secondary treatment is carried out on the holes after the formwork is removed, the whole wall body is free of the holes of the split bolts 14, and the poured fireproof wall impression quality is improved. A straight line adjusting hole is formed in the middle of the end of the outer keel 2 in advance and used for allowing the split bolt 14 to pass through, the split bolt 14 passes through a steel gasket, and the outer keel 2 is connected through double nuts. When the split bolts 14 are fastened, the flatness of the sub-template 6 is ensured, the sub-template cannot be over-tightened or over-loosened, and the surface of the sub-template 6 is prevented from generating local deformation.
The transverse template and the longitudinal template 7 can be connected by adopting a square-neck bolt, the neck part of the square-neck bolt is embedded into a groove of the connecting piece, and the bolt is fastened by a nut from the back side, so that the vertical displacement of the templates can be reduced; and a double-hook connector 5 is additionally arranged between the transverse template and the longitudinal template 7, so that the flatness of the surface of the template can be finely adjusted, the connection is reliable, and the disassembly is convenient.
Based on foretell template carries out transformer substation owner and becomes hot wall construction, adopts the sectional type construction, and concrete process is as shown in FIG. 6, includes:
1) preparing for construction;
the method comprises the steps of carrying out entrance inspection on main construction machinery and tool appliances, carrying out inspection and necessary detection on used materials, intersecting the safety technology of constructors, and dividing a firewall into 4 layers along the vertical direction according to a construction drawing, and splicing 9 sub-templates 6 in the horizontal direction to form a construction section.
2) And manufacturing the template for improving the appearance quality of the fire wall of the main transformer of the transformer substation.
3) Positioning and paying off and binding reinforcing steel bars.
Make location unwrapping wire work before the reinforcement, notice the horizontal elevation, the hot wall crust size line is prevented in the bullet, arranges the reinforcing bar according to the line, adopts the overlap joint form ligature, connects and staggers according to 50% and arranges, and staggered distance is greater than 1.3 times overlap joint length, and joint department must not be less than 3 knots, must not appear lacking the knot and leak detain, the pine mouthful phenomenon. The reinforcing steel bar binding iron wires are bent to the inner side of the wall body and are not in contact with the template, so that rust spots are prevented from appearing on the surface of the concrete. The steel bar protection layer adopts precast concrete cushion blocks, and the interval is not more than 1200mm for placement.
4) Mounting the firstiSegmenting the template; wherein the content of the first and second substances,i=1。
a level meter and a plumb line are used during mold erection to ensure that a panel is horizontal and vertical during mold erection, the height difference of 6 surfaces of adjacent sub-templates is controlled within 1.5mm, and the verticality of the sub-templates is controlled within 3 mm. The sub-template 6 verticality control measures verticality by total height (from the top of each sub-template 6 to the bottom of the firewall). The proportion of the release agent is determined through field tests, and the release agent is generally diesel oil: the engine oil is 3:7, and the releasing agent with the mixing ratio can effectively reduce the surface color difference of concrete and improve the surface appearance quality of the finished firewall product.
The template construction process flow is as follows: (1) after the sub-template 6 falls to the ground, cleaning rusts on the surface and adhered concrete by using an electric wire brush and a scraper knife; (2) after the sub-template 6 is subjected to impurity removal, wiping the surface of the steel template by geotextile or cotton cloth to ensure that the polished impurities are cleaned, and wiping the footprints clean; (3) after the sub-template 6 is wiped clean, uniformly brushing a release agent, and ensuring that the brushing is uniform and no oil is accumulated; (4) after the release agent is coated, the release agent is covered by a plastic film after being slightly dried, so that secondary pollution caused by rust removal of other templates is avoided. By the construction method, the surface cleaning process and the demolding and brushing process of the sub-template 6 can be optimized, the cleanliness of the surface of the sub-template 6 is improved, and the appearance of a concrete finished product is ensured.
5) To the firstiSelf-checking the segmented template, if the self-checking is not qualified, re-correcting the template, and if the self-checking is qualified, checking the template to the second stepiAnd concrete is poured in the segmented templates and vibrated.
Before concrete pouring, cement mortar with the same components as concrete is used for carrying out slurry joint treatment at the round line and mortise and tenon joint, and the thickness is 20-30 mm.
The concrete should be distributed in layers reasonably, and the concrete pouring interval time between the upper layer and the lower layer should not exceed the initial setting time of the concrete. The concrete pouring adopts a pumping process, and in order to prevent the concrete from generating segregation phenomenon and polluting the surface of the template during the blanking, a rubber pipe with the diameter of 200mm is adopted as a guide pipe for blanking. And (3) pouring in a layered manner from one end to the other end during blanking, and keeping the distance between the lower opening of the guide pipe and a pouring surface to be not more than 2m during pouring. The casting speed is controlled to be 1.2m/h along the height. The concrete is vibrated by adopting an insertion vibrator, and the concrete is quickly inserted and slowly pulled during vibration.
As shown in figure 7, the vibrating points are arranged in two rows, the distance between the adjacent transverse formworks of the first row and the first row is consistent with the distance between the adjacent transverse formworks of the second row and the second row, the distance between the adjacent vibrating points is about 100mm, the vibrating points of the first row and the vibrating points of the second row are distributed in a staggered mode. The vibrating point is used for arranging the vibrating spear, and the vibration radius is 300mm generally, and the vibrating spear is arranged like figure 7, both can guarantee that every concrete all is vibrated, is the shortest path of vibrating again, improves the efficiency of vibrating, avoids upper and lower floor concrete placement intermittent time overlength.
During the vibration, the vibrting spear inserts about lower floor concrete 50mm, eliminate the seam between two layers, every layer is pour height control about 400mm when the layering is pour, paste red label every 500mm on the vibrting spear leather hose, during the layering vibration, the first red label of mark should not be crossed to the concrete, can guarantee that the vibrting spear inserts in the lower floor concrete, avoid the concrete layering, no longer sink when the concrete, the bubble appears in the surface, stop vibrating when flooding the laitance, the vibration time of every position is generally 20~30 s. In the vibrating process, the vibrating spear is prevented from directly contacting the steel template and the steel bar.
6) After reaching the preset time, the first step of dismantlingiAnd (5) segmenting the template.
After the concrete is poured for 48 hours, the concrete is solidified to form the firewall segments shown in the figure 8, and the templates are removed by using a truck crane and manpower. Before the formwork is dismantled, the reinforcing part and the adjusting scaffold are dismantled firstly according to the principle of dismantling after the formwork is dismantled firstly, and then the split bolts 14 are dismantled. The template is placed at a designated position after being removed, concrete attached to the surface is cleaned in time, a separant is coated, whether the next layer of construction is influenced by the template is checked, and the template which does not accord with construction conditions is replaced in time.
7) To the first castingiThe segmental firewall is used for inspecting the impression quality, if the impression quality is not qualified, the poured segmental firewall is repaired, and if the impression quality is qualified, the first step is carried outiAnd maintaining the segmented firewall.
After the template is dismantled, the fireproof wall concrete is inspected for impression quality, and after the fireproof wall concrete is qualified, the next step is carried out, and the template is continuously supported for pouring until the fireproof wall concrete is pourediAnd = 4. If the concrete defect needs to be repaired, the cement with the same label as the concrete is used for trial preparation, and the repairing mixing ratio is determined after the test. And (3) treating the sand-out phenomenon: and (4) lightly wiping loose sand grains by using flannelette, and then brushing the prepared cement mortar by using a paint brush.
When one template is removed, a proper amount of water is sprayed on the surface of the template in time for moisture preservation and maintenance, and the template is covered by a plastic film to prevent the surface from being dehydrated too much to generate drying cracks. And after all the sections are poured, spraying water from the top of the wall body for maintenance, and keeping the surface of the top of the concrete in a wet state. The curing time is generally not less than 14 days.
8) Judging whether the main body of the firewall is poured or not, and if not, installingi=i+1 segmental formwork, turn to 5), if the main body is poured, seam gap and split bolt are carried outAnd (4) processing holes.
After the construction of the firewall is finished, whether the dividing joint is straight or not and whether the width is consistent or not are checked, and whether the appearance is good or not is judged. If the repair is needed, cement mortar for repair is prepared firstly, the edges and corners of the dividing joints are pressed by a long ruler, the edges and corners to be repaired are ensured to be square and straight, cement mortar is used for leveling in the dividing joints, and after the repair is completed, the sand skin is used for polishing, so that the polishing is uniform, and the uniform and consistent color of the concrete is ensured.
And (3) plugging the 14 holes of the split bolts by using cement mortar added with a small amount of micro-expansion agent, properly correcting the positions of the split joint lines by using tools such as an angle grinder and the like to ensure that each split joint is parallel and neat, and finally, uniformly coating a clear water concrete protective agent or a color coating by using a small brush with the width of 200mm, and covering and hiding the holes of the bolts. By adopting the method, the plane of the firewall presents concave-convex stereoscopic impression, the layering of the wall surface is enhanced, and the overall impression quality of the firewall is further improved.
After the main part construction was accomplished, wall body geometric dimensions is accurate, and the concrete surface is smooth, level and smooth, the colour is unanimous, does not have honeycomb pitted surface and obvious bubble, and external corner radius angle, lines are straight and straight in the same direction as smooth, and the box seam is violently flat vertical, the width is even, and the wall is invisible template piece seam and 14 eyes traces, wall that leave to the split bolt are pleasing to the eye in the outward appearance. Actually measured size deviation: the perpendicularity of the wall body is less than or equal to 4mm, the flatness is less than or equal to 2mm, the deviation of the section size is +/-3 mm, and the construction quality of the firewall reaches a preset standard.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various improvements and modifications without departing from the technical principle of the present invention, and those improvements and modifications should be considered as the protection scope of the present invention.
Claims (8)
1. The template for improving the appearance quality of a firewall of a main transformer of a transformer substation is characterized by comprising two transverse templates which are arranged oppositely, wherein a longitudinal template is connected between opposite ends of the two transverse templates;
the transverse template is formed by splicing a plurality of sub-templates, the adjacent sub-templates are spliced by mortise and tenon structures, a row of split bolts penetrate between the upper parts and between the lower parts of the two opposite sub-templates, split bolts between the two sub-templates are sleeved with split bolt pipes, pipe heads of the split bolt pipes are conical, and the thick end of each split bolt pipe is attached to the corresponding sub-template.
2. The template for improving the appearance and the feel of the fire wall of the main transformer of the transformer substation as claimed in claim 1, wherein a double-hook connector is arranged between the transverse template and the longitudinal template.
3. The template for improving the appearance and the feel of the fire wall of the main transformer of the transformer substation as claimed in claim 1, wherein the upper inner side and the lower inner side of the sub-template are both provided with through long flat irons as joint connecting lines, and split bolts penetrate through the through long flat irons.
4. The template for improving the appearance quality of the firewall of the main transformer of the transformer substation according to claim 1, characterized in that a fillet line is arranged at the connecting corner of the transverse template and the longitudinal template.
5. The template for improving the appearance and the feel of the fire wall of the main transformer of the transformer substation as claimed in claim 1, wherein the inner side panel of the sub-template is formed by one-time rolling.
6. A construction method for improving appearance quality of a firewall of a main transformer of a transformer substation is characterized by comprising the following steps:
1) positioning and paying off and binding reinforcing steel bars;
2) mounting the firstiSegmenting the template; wherein the content of the first and second substances,i=1, the template is the template according to any one of claims 1 to 6;
3) to the firstiSelf-checking the segmented template, and if the self-checking is qualified, checking the segmented template to the firstiConcrete is poured in the segmented templates and vibrated;
4) after reaching the preset time, the first step of dismantlingiSegmenting the template;
5) to the first castingiSegmented firewallChecking and accepting the impression quality, and if the impression quality is qualified, performing the second stepiMaintaining the segmented firewall;
6) judging whether the main body of the firewall is poured or not, and if not, installingi=i+1 segmentation template, turn to 3), if the main part is poured and is accomplished, carry out seam gap and split bolt hole processing.
7. The construction method for improving the visual quality of the fire wall of the main transformer of the transformer substation according to claim 6, wherein the repair treatment is carried out on the poured segmented fire wall if the visual quality is not qualified.
8. The construction method for improving the appearance and the feel of the fire wall of the main transformer of the transformer substation as claimed in claim 6, wherein the vibrating points are arranged in two rows, the distance between the first row and the transverse formwork close to the first row is consistent with the distance between the second row and the transverse formwork close to the second row, and the vibrating points of the first row and the vibrating points of the second row are distributed in a staggered mode.
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| CN202210364749.9A CN114737748A (en) | 2022-04-08 | 2022-04-08 | Template for improving appearance quality of transformer substation main transformer firewall and construction method |
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