CN116427691A - Construction method of curved surface wood grain fresh water concrete structure - Google Patents

Construction method of curved surface wood grain fresh water concrete structure Download PDF

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Publication number
CN116427691A
CN116427691A CN202310169929.6A CN202310169929A CN116427691A CN 116427691 A CN116427691 A CN 116427691A CN 202310169929 A CN202310169929 A CN 202310169929A CN 116427691 A CN116427691 A CN 116427691A
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China
Prior art keywords
template
construction
concrete
wood grain
panel
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CN202310169929.6A
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Chinese (zh)
Inventor
黎新锋
张赛
寇卫卫
王海珍
杨杰
伍振佩
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China MCC17 Group Co Ltd
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China MCC17 Group Co Ltd
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Priority to CN202310169929.6A priority Critical patent/CN116427691A/en
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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
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/04—Forming boards or similar elements the form surface being of wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering 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
    • E04G17/001—Corner fastening or connecting means for forming or stiffening elements
    • 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
    • E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
    • 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
    • E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The invention provides a construction method of a curved-surface wood grain bare concrete structure, and relates to the technical field of construction of bare concrete structures. The whole flow is as follows: 1) A template and a support design; 2) Measuring and paying off; 3) Setting up a scaffold; 4) Blanking a template; 5) Mounting a back ridge; 6) Installing a lining plate; 7) Installing a panel; 8) Electromechanical reservation and embedding; 9) Binding reinforcing steel bars; 10 A) mounting an upper port back template; 11 Concealed acceptance; 12 Concrete casting; 13 Curing the concrete; 14 Spraying a protective agent on the clean water structure; 15 A template and a support design. The wood grain clear water concrete slab adopted by the invention realizes better composite flatness requirement, proper staggered tables can be intentionally adjusted, vertical splicing seams of the slabs are intentionally disturbed into an irregular state, and meanwhile, bolt holes generated in the reinforcing process are reserved, so that the stereoscopic impression and the natural impression of concave-convex can be more visually provided for people.

Description

Construction method of curved surface wood grain fresh water concrete structure
Technical Field
The invention provides a construction method of a curved-surface wood grain bare concrete structure, and relates to the technical field of construction of bare concrete structures.
Background
In order to embody the artistry and creativity of university public buildings, a curved-surface wood grain bare concrete structure is specially designed, the wood grain bare concrete is one kind of decorative bare concrete, and natural wood grain texture patterns are formed on the surface of the concrete by utilizing the rubbing characteristics of the concrete, so that the bare concrete has deeper expression and good decorative effect. The concrete slab has no complete flatness and proper staggering, and the vertical splicing seam is disturbed into irregular state, so that the bolt holes produced during reinforcing are maintained.
Disclosure of Invention
In order to solve the technical problems, the inventor obtains the technical proposal of the invention through practice and summary, and the invention discloses a construction method of a curved surface wood grain bare concrete structure, which comprises the following construction process flow:
1) A template and a support design;
2) Measuring and paying off;
3) Setting up a scaffold;
4) Blanking a template;
5) Mounting a back ridge;
6) Installing a lining plate;
7) Installing a panel;
8) Electromechanical reservation and embedding;
9) Binding reinforcing steel bars;
10 A) mounting an upper port back template;
11 Concealed acceptance;
12 Concrete casting;
13 Curing the concrete;
14 Spraying a protective agent on the clean water structure;
15 A template and a support design.
In a further aspect, the template and support design includes: selecting a wood grain clean water structure template and a split bolt,
the wood grain clear water structure template adopts a double-layer template system, is divided into an inner wood grain panel and an outer lining plate, and the inner wood grain panel is contacted with a concrete surface;
the installation length of the inner wood grain panel is randomly generated according to site construction; the length is within 1m-4m, the width is divided into one of 12cm, 9cm and 6cm, and the thickness is 1.2cm or 0.8cm;
in order to ensure the overall rigidity requirement, the outer lining plate adopts a multilayer clear water film-coated plate with the size of 1220mm by 2440mm by 15 mm;
the opposite-pulling screw is a screw with the diameter of 16mm, and the installation interval corresponds to 600mm of the bolt hole; in order to ensure the construction molding effect and the accurate structural dimension of the wood grain bare concrete, a template reinforcing system adopts a fastener type scaffold.
In a further aspect, the measuring and paying-off includes: basic side lines, component control lines, process control lines and points are measurement data;
the scaffold erection comprises: the scaffold is erected to construct according to a steel pipe layout diagram which is obtained by measuring data before construction and carrying out construction simulation data, and a special construction scheme and technical points are compiled;
after the construction is completed, the construction is checked according to the control points and lines of the ground and the special construction scheme and technical traffic points of the scaffold, so that the next procedure is ensured to be carried out smoothly.
In a further technical scheme, the template blanking includes:
1) Preparing a drawing:
the first part is a construction back edge diagram, and the inside of the first part comprises the size and the thickness of the back edge and a blanking diagram of an engraving machine;
the second part is a lining board layout diagram, and the inside of the lining board layout diagram comprises turning point marks, template thickness and width dimensions;
the third part is a construction layout, and the construction layout comprises reserved embedded points and detail node processing positions;
2) Deep design:
performing deep typesetting and perfecting on the components according to the deep design and construction requirements, and ensuring the front-end guarantee of high-quality completion of construction tasks; typesetting requirements: horizontally placing the wood grain clear water structure template, wherein the bolt hole spacing is 600mm by 600mm;
and (3) blanking numbering and assembling the back edge numbers:
carrying out deep typesetting on the back edges according to the sectional view provided by the design; and (3) lofting by CAD software according to the modulus and radian after the deepening design is finished, then leading out a DXF format, blanking by a template engraving machine, numbering the die engraving machine according to a drawing after the blanking is finished, and stacking.
In a further technical solution, the mounting of the back ridge includes:
firstly, assembling on the ground after the blanking numbering of the back ridge is completed, wherein the assembling length is not more than 6m; after the back edge is assembled, hoisting is carried out by utilizing a tower crane, and the installation starting position, the space, the tail end and the like are strictly implemented according to a construction typesetting diagram;
due to the insufficient strength of a single template, three layers of templates are adopted for assembly and combination to form a back ridge, and the distance between the back ridges is controlled at 25cm.
In a still further aspect, the liner mounting includes: the special multilayer clear water film-coated plate is purchased, the multilayer clear water film-coated plate is cut into a strip-shaped template which is used as a lining plate of the curved surface part, and the width of the template is controlled to be 300mm-50mm;
the lining board and the back edge are fixedly connected by adopting a long air wall nail with the length of 30 mm.
In a still further aspect, the panel mounting includes: after the lining board is installed, an inner layer wood grain panel is required to be paved; installing the panel according to the design requirement and the deepened design construction layout;
the pre-buried installation of reservation: installing the reserved embedded parts at reserved embedded points according to the construction layout, and installing the reserved embedded parts on a panel after construction is completed; after the installation work of the reserved embedded part is completed, the plate surface of the inner wood grain panel is cleaned and delivered to the next working procedure.
In a further technical solution, the reinforcement engineering includes: before the steel bar is installed, the size of the steel bar is repeated, the repeated size is adjusted to the construction position without errors, and the waterproof film is covered;
in the process of processing and binding the reinforcing steel bars, bending is required according to the required radian, and a reinforcing steel bar protection layer is reserved;
the upper port back template installation comprises a clear water back template, and the clear water back template installation adopts pre-spliced template assembly; and installing the template and the back edge in advance, pre-assembling, and stacking corresponding numbers in order after checking without errors.
In a further aspect, the covert acceptance includes: after the templates are reinforced, the reinforcing steel bars are bound and the embedded parts are reserved in place, joint acceptance of civil engineering, fire protection, heating ventilation, hydropower, intellectualization and floodlighting is required, and subsequent procedures can be carried out after no errors are ensured;
the concrete pouring includes: the concrete is a curved surface, the slump of the concrete is controlled to be 100-120 mm, and the compaction by vibration is enhanced in the pouring process;
the demolding maintenance comprises the following steps: after the integral structure is capped and the concrete strength reaches 100%, removing the mould, wherein the removing is performed after the first removing is performed, the first removing is performed after the second removing, and the first removing is performed after the first removing; and the concrete is cured by sprinkling water, and the curing is carried out for 15 days continuously for at least 4 times a day.
In a further technical scheme, the clean water structural surface spraying protective agent comprises: after the completion of the demolding and curing of the concrete, a layer of fluorocarbon transparent protective agent is coated on the surface of the concrete, and the process flow is as follows:
(1) Wall surface cleaning: before the coating is constructed, the whole wall surface is inspected and the local detail defect is treated; cleaning dust particles on the wall surface, and keeping the dust particles dry;
(2) Color adjustment: the color difference of the concrete is excessively adjusted by using an adjusting material, so that the color of the concrete on the whole wall surface is uniform;
(3) And (3) under-coating: uniformly spraying or rolling the primer for 2 times, wherein the interval time is 30min, and the coating must completely cover the wall surface without omission;
(4) And (3) intermediate coating: after the priming construction is completed for 3 hours, the middle coating is uniformly sprayed, and no omission exists;
(5) And (3) finishing coating: after the intermediate coating construction is completed for 3 hours, the finish coating is uniformly sprayed for 2 times, the interval time is more than 3 hours, airless spraying is adopted for spraying, the pressure must be stable during spraying, the distance between a spray gun and a wall body is kept consistent, and the spraying uniformity is ensured.
Compared with the prior art, the invention can obtain the following technical effects:
the construction method of the curved-surface-structure wood grain clear water concrete provided by the invention has strong operability, and the quality is safe and controlled. The wood grain clear water concrete slab adopted by the invention realizes better composite flatness requirement, proper staggered tables can be intentionally adjusted, vertical splicing seams of the slabs are intentionally disturbed into an irregular state, and meanwhile, bolt holes generated in the reinforcing process are reserved, so that the stereoscopic impression and the natural impression of concave-convex can be more visually provided for people.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
FIG. 1 is a material attachment diagram of the present invention;
fig. 2 is a scaffold setup view of the present invention;
FIG. 3 is a die plate blanking diagram of the present invention.
Description of the embodiments
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The principles of the invention will be further described with reference to the drawings and specific examples.
Examples
As shown in fig. 1 to fig. 1, which are an embodiment of the present invention, the overall flow is: 1) A template and a support design; 2) Measuring and paying off; 3) Setting up a scaffold; 4) Blanking a template; 5) Mounting a back ridge; 6) Installing a lining plate; 7) Installing a panel; 8) Electromechanical reservation and embedding; 9) Binding reinforcing steel bars; 10 A) mounting an upper port back template; 11 Concealed acceptance; 12 Concrete casting; 13 Curing the concrete; 14 Spraying a protective agent on the clean water structure; 15 A template and a support design.
(1) Form and support design
The wood grain clear water structure template is installed by adopting a double-layer template system, and is divided into an inner layer wood grain panel and an outer layer lining board, wherein the inner layer wood grain panel is contacted with a concrete surface, and a high-quality camphor seed pine solid wood board is selected according to design requirements. The wood grain board is randomly generated according to site construction, the shortest length is not less than 1m, the maximum length is 4m, the width is one of 12cm, 9cm and 6cm, the thickness is 1.2cm and 0.8cm, and the wood grain board is disposable and can not be circulated. In order to ensure the overall rigidity requirement, the outer lining plate is a multilayer clear water film-coated plate with the thickness of 1220mm, 2440mm and 15mm, and the functions of fixing the inner wood grain plate and providing a mold for forming the concrete structure after reinforcement are achieved. The lining board can be properly circulated according to the progress of the construction section.
The opposite-pull screw rod is a screw rod with the diameter of 16mm and the high-strength national standard, the installation interval corresponds to 600mm of the bolt hole, and the outer wall relates to a five-section type water stop screw rod used for the waterproof part. In order to ensure the construction molding effect and the accurate structural dimension of the wood grain bare concrete, a template reinforcing system adopts a fastener scaffold, and the distance between vertical rods is 800mm after calculation and typesetting, and the material is shown in figure 1.
(2) Measuring pay-off
Besides basic side lines and component control lines, process control lines and points, such as scaffold arrangement net lines, fluctuation elevation control points, back edge installation and inspection control points, boundary lines and the like, are added for measuring and paying off, so that preparation is made for scaffold frame and back edge installation in the next process.
(3) Scaffold building
The scaffold is erected and constructed according to a detailed steel pipe layout diagram which is obtained by construction simulation data, a special construction scheme is compiled, technical bottoms are intersected, the scaffold mainly adopts a fastener scaffold, the distance between vertical rods is 800 x 800mm, and supporting vertical rods are additionally arranged at the bottom of a beam. After the construction is completed, checking is carried out according to control points and lines of the ground and the construction scheme of the scaffold and the technical intersection points, so that the next procedure is ensured to be carried out smoothly. See fig. 2.
(4) Template blanking
(1) And the blanking of the template comprises three parts:
the first part is a construction back edge diagram, and the inside of the first part comprises the size and the thickness of the back edge and a blanking diagram of an engraving machine;
the second part is a lining board layout diagram, wherein turning point marks are included in the lining board layout diagram, and the thickness, the width and the like of the used template are described;
the third part is a construction layout, and the drawing of the third part comprises reserved pre-embedded parts, detail node processing and the like;
deep design: the deep typesetting of the components is perfected according to the deep design and construction requirements, and the method is also a preliminary simulation construction process, and ensures the front-end guarantee of high-quality completion of construction tasks. Typesetting requirements: the template is placed horizontally, 600mm is the bolt hole interval 600mm.
And (3) blanking numbering and assembling the back edge numbers: according to the sectional view provided by the design, the deep typesetting of the back edges is carried out, and special attention is paid to typesetting utilization on the standard templates as much as possible in the process, so that the template utilization rate is increased. And (3) lofting by CAD according to the modulus and radian after deepening, then leading out a DXF format, blanking by a template engraving machine, numbering the die engraving machine according to the drawing after blanking is finished, and stacking. The carpenter assembles according to the sequence of the numbers. See fig. 3.
(5) Back edge installation
After the blanking of the back edge is finished, the back edge is firstly assembled on the ground, the assembling length is not more than 6m, the overlong deflection can occur during hoisting, and the difficulty of the next construction process can be increased. After the back edge is assembled, the tower crane is used for hoisting, and the installation starting position, the space, the tail end and the like are strictly controlled according to the installation diagram and the control points on the ground. Due to the insufficient strength of a single template, three layers of templates are adopted for assembly and combination to form a back ridge, and the distance between the back ridges is controlled at 25cm.
(6) Lining plate installation
The special plastic-covered plate for clean water is cut into a strip of templates, and is used as a lining plate of a curved surface part, the width of the template is controlled to be 300-50 mm, and the lining plate and the back edge are fixedly connected by adopting a long air wall nail with the length of 30 mm.
(7) Panel mounting
After the lining board is laid, a wood grain board is required to be laid, and the wood grain board is a high-quality camphor wood pine solid board which is easy to process and is prevented from absorbing water and being stained with slurry after carbonization and baking finish treatment. The installation length of the wood grain plate is randomly generated according to site construction, the length is within 1m-4m, the width is one of 12cm, 9cm and 6cm, and the thickness is 1.2cm or 0.6cm. The wood grain panel is put into once and can not be circulated. The method has the main function of branding the surface textures of the wood grain plate on the surface of the concrete to form the wood grain bare concrete.
The panel installation is installed according to the design requirement and the deepened design typesetting, so that the follow-up reservation of embedded installation location and the like are facilitated, when the panel is installed, an operator must wear shoe covers, and the panel pollution can be effectively prevented.
(8) Reserved pre-buried installation
And (3) each professional controls the construction layout, each reserved embedded part is installed on the panel after the construction is completed, the accuracy is required, reworking is not required, and the operators have to wear shoe covers. After the reservation and pre-embedding work is completed, the plate surface is cleaned and delivered to the next working procedure.
(9) Reinforcing bar engineering
The reinforcing steel bar modeling of the completed material bill is repeated according to the local auxiliary tool before the reinforcing steel bar is installed, the construction section can be adjusted into the rear of the repeated ruler without errors, the reinforcing steel bar is covered, the plate surface is prevented from being polluted by the reinforcing steel bar rust water after raining or dew, and the reinforcing steel bar construction operator must wear shoe covers when working on the upper working plane.
In the process of processing and binding the reinforcing steel bars, the reinforcing steel bars must be bent according to radian, and the reinforcing steel bar protection layer is arranged in place to prevent and treat the leakage of the reinforcing steel bars.
(10) Upper opening back face mould plate installation
The installation of the clear water back template adopts the installation of a pre-spliced small template. The template and the back edge are mounted together in advance, preassembling is carried out on the ground, after the inspection is correct, the corresponding serial numbers are piled neatly, five-joint screws are mounted in advance on the working section, the thickness of the component can be effectively controlled, and after the inspection and adjustment, the back template is mounted.
(11) Concealed acceptance check
After the template is reinforced, the reinforcing steel bars are bound and the electromechanical reservation is embedded in place, the combined acceptance is very important because the structure is formed at one time, and the combined acceptance of various professions such as civil engineering, fire protection, heating ventilation, hydropower, intellectualization, floodlighting and the like and professional management staff of project departments, supervision engineers and the like is ensured, so that the follow-up procedure can be carried out after no errors.
In the acceptance process, attention is paid to strengthening acceptance of a formwork support system, particularly inclined support, so that strength, rigidity and stability of the formwork are ensured, and safe construction and later concrete forming quality are ensured.
(12) Concrete pouring
And (3) performing personnel and post setting training before concrete pouring, detecting and recording each car of concrete after the concrete enters the field, wherein the unqualified concrete must be returned to the field, and the field adjustment is not allowed, so that management personnel track the whole course in the concrete pouring process.
Because the concrete is a curved surface, the slump of the concrete is not excessively large, the slump is controlled to be about 100-120 mm, and the compaction by vibration is enhanced in the pouring process.
(13) Form removal maintenance
And when the structure is capped and the strength of the mixed concrete reaches 100%, the mixed concrete can be removed, the removal is performed after the first-made and later-made first-removal, and the first-removal procedure is performed, and the mixed concrete is cleaned once. And the concrete is cured by sprinkling water, and the curing is carried out for 15 days continuously for at least 4 times a day.
(14) Spraying protective agent for clean water structural surface
In the bare concrete engineering, the air humidity is high, the wind power is strong, the corrosion of chloride ions, sodium ions and the like in solar ultraviolet rays and rainwater on concrete is extremely strong, and in order to ensure the durable use of concrete buildings, the surface of the bare concrete is required to be coated with a layer of fluorocarbon transparent protective agent, so that the protective effect of wind resistance, ultraviolet resistance, acid rain resistance and salt and alkali resistance substances is achieved. The process flow is as follows:
(1) Wall surface cleaning: before the paint is applied, the whole wall surface is inspected and the local detail defect is treated. Cleaning dust particles on the wall surface, keeping the dust particles dry, and protecting the parts easy to pollute by using a plastic film.
(2) Color adjustment: the color difference of the concrete is excessively adjusted by the adjusting material, so that the color of the concrete on the whole wall surface is uniform.
(3) And (3) under-coating: and (3) uniformly spraying or rolling the primer for 2 times, wherein the interval time is 30min, and the color of the wall surface after the coating is slightly deepened, so that the wall surface is required to be completely covered, and no omission occurs.
(4) And (3) intermediate coating: after the priming construction is completed for 3 hours, the middle coating is evenly sprayed, and no omission exists.
(5) And (3) finishing coating: after the intermediate coating construction is completed for 3 hours, the finish coating is uniformly sprayed for 2 times, the interval time is more than 3 hours, airless spraying is adopted for spraying, the pressure must be stable during spraying, the distance between a spray gun and a wall body is kept consistent, and the spraying uniformity is ensured. The spraying times can be increased for the concrete wall surface with deeper color, so that the texture of the wall surface is more consistent.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (10)

1. The construction method of the curved surface wood grain fresh water concrete structure is characterized by comprising the following construction process flows:
1) A template and a support design;
2) Measuring and paying off;
3) Setting up a scaffold;
4) Blanking a template;
5) Mounting a back ridge;
6) Installing a lining plate;
7) Installing a panel;
8) Electromechanical reservation and embedding;
9) Binding reinforcing steel bars;
10 A) mounting an upper port back template;
11 Concealed acceptance;
12 Concrete casting;
13 Curing the concrete;
14 Spraying a protective agent on the clean water structure;
15 A template and a support design.
2. The method of claim 1, wherein the formwork and support design comprises: selecting a wood grain clean water structure template and a split bolt,
the wood grain clear water structure template adopts a double-layer template system, is divided into an inner wood grain panel and an outer lining plate, and the inner wood grain panel is contacted with a concrete surface;
the installation length of the inner wood grain panel is randomly generated according to site construction; the length is within 1m-4m, the width is divided into one of 12cm, 9cm and 6cm, and the thickness is 1.2cm or 0.8cm;
in order to ensure the overall rigidity requirement, the outer lining plate adopts a multilayer clear water film-coated plate with the size of 1220mm by 2440mm by 15 mm;
the opposite-pulling screw is a screw with the diameter of 16mm, and the installation interval corresponds to 600mm of the bolt hole; in order to ensure the construction molding effect and the accurate structural dimension of the wood grain bare concrete, a template reinforcing system adopts a fastener type scaffold.
3. The method for constructing a curved grain fresh water concrete structure according to claim 2, wherein the measuring and paying-off comprises: basic side lines, component control lines, process control lines and points are measurement data;
the scaffold erection comprises: the scaffold is erected to construct according to a steel pipe layout diagram which is obtained by measuring data before construction and carrying out construction simulation data, and a special construction scheme and technical points are compiled;
after the construction is completed, the construction is checked according to the control points and lines of the ground and the special construction scheme and technical traffic points of the scaffold, so that the next procedure is ensured to be carried out smoothly.
4. A method of constructing a curved grain fresh water concrete structure according to claim 3, wherein the blanking of the form comprises:
1) Preparing a drawing:
the first part is a construction back edge diagram, and the inside of the first part comprises the size and the thickness of the back edge and a blanking diagram of an engraving machine;
the second part is a lining board layout diagram, and the inside of the lining board layout diagram comprises turning point marks, template thickness and width dimensions;
the third part is a construction layout, and the construction layout comprises reserved embedded points and detail node processing positions;
2) Deep design:
performing deep typesetting and perfecting on the components according to the deep design and construction requirements, and ensuring the front-end guarantee of high-quality completion of construction tasks; typesetting requirements: horizontally placing the wood grain clear water structure template, wherein the bolt hole spacing is 600mm by 600mm;
and (3) blanking numbering and assembling the back edge numbers:
carrying out deep typesetting on the back edges according to the sectional view provided by the design; and (3) lofting by CAD software according to the modulus and radian after the deepening design is finished, then leading out a DXF format, blanking by a template engraving machine, numbering the die engraving machine according to a drawing after the blanking is finished, and stacking.
5. The method for constructing a curved grain fresh water concrete structure according to claim 4, wherein the back ridge mounting comprises:
firstly, assembling on the ground after the blanking numbering of the back ridge is completed, wherein the assembling length is not more than 6m; after the back edge is assembled, hoisting is carried out by utilizing a tower crane, and the installation starting position, the space, the tail end and the like are strictly implemented according to a construction typesetting diagram;
due to the insufficient strength of a single template, three layers of templates are adopted for assembly and combination to form a back ridge, and the distance between the back ridges is controlled at 25cm.
6. The method for constructing a curved grain fresh water concrete structure according to claim 4, wherein the lining plate installation comprises: the special multilayer clear water film-coated plate is purchased, the multilayer clear water film-coated plate is cut into a strip-shaped template which is used as a lining plate of the curved surface part, and the width of the template is controlled to be 300mm-50mm;
the lining board and the back edge are fixedly connected by adopting a long air wall nail with the length of 30 mm.
7. The method of constructing a curved grain fresh water concrete structure according to claim 5, wherein the panel mounting includes: after the lining board is installed, an inner layer wood grain panel is required to be paved; installing the panel according to the design requirement and the deepened design construction layout;
the pre-buried installation of reservation: installing the reserved embedded parts at reserved embedded points according to the construction layout, and installing the reserved embedded parts on a panel after construction is completed; after the installation work of the reserved embedded part is completed, the plate surface of the inner wood grain panel is cleaned and delivered to the next working procedure.
8. The method for constructing a curved grain fresh water concrete structure according to claim 5, wherein the reinforcement engineering comprises: before the steel bar is installed, the size of the steel bar is repeated, the repeated size is adjusted to the construction position without errors, and the waterproof film is covered;
in the process of processing and binding the reinforcing steel bars, bending is required according to the required radian, and a reinforcing steel bar protection layer is reserved;
the upper port back template installation comprises a clear water back template, and the clear water back template installation adopts pre-spliced template assembly; and installing the template and the back edge in advance, pre-assembling, and stacking corresponding numbers in order after checking without errors.
9. The method for constructing a curved grain fresh water concrete structure according to claim 5, wherein the concealing acceptance comprises: after the templates are reinforced, the reinforcing steel bars are bound and the embedded parts are reserved in place, joint acceptance of civil engineering, fire protection, heating ventilation, hydropower, intellectualization and floodlighting is required, and subsequent procedures can be carried out after no errors are ensured;
the concrete pouring includes: the concrete is a curved surface, the slump of the concrete is controlled to be 100-120 mm, and the compaction by vibration is enhanced in the pouring process;
the demolding maintenance comprises the following steps: after the integral structure is capped and the concrete strength reaches 100%, removing the mould, wherein the removing is performed after the first removing is performed, the first removing is performed after the second removing, and the first removing is performed after the first removing; and the concrete is cured by sprinkling water, and the curing is carried out for 15 days continuously for at least 4 times a day.
10. The method for constructing a curved grain fresh water concrete structure according to claim 9, wherein the spraying of the protective agent on the surface of the fresh water structure comprises: after the completion of the demolding and curing of the concrete, a layer of fluorocarbon transparent protective agent is coated on the surface of the concrete, and the process flow is as follows:
(1) Wall surface cleaning: before the coating is constructed, the whole wall surface is inspected and the local detail defect is treated; cleaning dust particles on the wall surface, and keeping the dust particles dry;
(2) Color adjustment: the color difference of the concrete is excessively adjusted by using an adjusting material, so that the color of the concrete on the whole wall surface is uniform;
(3) And (3) under-coating: uniformly spraying or rolling the primer for 2 times, wherein the interval time is 30min, and the coating must completely cover the wall surface without omission;
(4) And (3) intermediate coating: after the priming construction is completed for 3 hours, the middle coating is uniformly sprayed, and no omission exists;
(5) And (3) finishing coating: after the intermediate coating construction is completed for 3 hours, the finish coating is uniformly sprayed for 2 times, the interval time is more than 3 hours, airless spraying is adopted for spraying, the pressure must be stable during spraying, the distance between a spray gun and a wall body is kept consistent, and the spraying uniformity is ensured.
CN202310169929.6A 2023-02-27 2023-02-27 Construction method of curved surface wood grain fresh water concrete structure Pending CN116427691A (en)

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