CN113137114A - Construction method of outer barrel of chimney of large thermal power generating unit - Google Patents

Construction method of outer barrel of chimney of large thermal power generating unit Download PDF

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Publication number
CN113137114A
CN113137114A CN202010052601.2A CN202010052601A CN113137114A CN 113137114 A CN113137114 A CN 113137114A CN 202010052601 A CN202010052601 A CN 202010052601A CN 113137114 A CN113137114 A CN 113137114A
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China
Prior art keywords
template
layer
templates
chimney
construction method
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Withdrawn
Application number
CN202010052601.2A
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Chinese (zh)
Inventor
梁庆纯
王二伟
朱远江
陈君
崔世维
张强
徐扬
郎国权
战阳
侯龙攀
王春磊
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Northeast Power Tobacco Tower Engineering Co ltd
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Northeast Power Tobacco Tower Engineering Co ltd
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Application filed by Northeast Power Tobacco Tower Engineering Co ltd filed Critical Northeast Power Tobacco Tower Engineering Co ltd
Priority to CN202010052601.2A priority Critical patent/CN113137114A/en
Publication of CN113137114A publication Critical patent/CN113137114A/en
Withdrawn legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/28Chimney stacks, e.g. free-standing, or similar ducts
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys

Abstract

A construction method of a chimney outer barrel of a large thermal power generating unit comprises the following steps: manufacturing a trapezoidal outer template, and correcting each outer template; after the steel reinforcement framework of the cylinder wall is installed, sequentially erecting a layer of outer formworks at the position line of the formworks on the foundation ring wall; a split bolt is arranged on each outer template in a penetrating way; a plurality of template backs, outer mold surrounding purlins and template keels are sequentially arranged on the outer sides of the outer templates; sleeving an inner sleeve on the split bolts respectively, sequentially installing an inner template and an inner surrounding purlin, installing a triangular frame on the inner side of each inner template, installing a jacking rod and an add-subtract wire on the triangular frame respectively, screwing nuts at two ends of the split bolts respectively, and connecting and fixing the outer template and the inner template to form a closed circle of template ring groove; and pouring concrete in the ring groove of the assembled first layer of template, and sequentially repeating the steps on the layer of template after the concrete is initially set to assemble the next layer of template. The beneficial effects are that: the operation is labour saving and time saving, can effective control section of thick bamboo wall radius, promotes the surface impression quality.

Description

Construction method of outer barrel of chimney of large thermal power generating unit
Technical Field
The invention relates to a construction method, in particular to a construction method of an outer barrel of a chimney of a large thermal power generating unit.
Background
The chimney is one of the main structures of the thermal power plant, is a barrel high-rise structure, and is equipment for conveying boiler combustion flue gas. At present, most of chimneys are designed to be sleeve type chimneys, the outer cylinder generally adopts a reinforced concrete structure, and the inner cylinder adopts a titanium steel composite plate steel cylinder structure or a glass steel structure. The improvement of the appearance quality of the concrete surface of the outer cylinder of the chimney is always the target pursued by construction units. Therefore, innovation is continuously invented on the construction process.
The construction process of the chimney concrete cylinder wall mainly comprises a suspended type triangular frame mould overturning process, a sliding template process, an electric mould lifting process, a hydraulic sliding frame mould reversing process and the like. The construction process adopting the sliding template has several main quality common defects, which seriously affect the engineering quality, such as the influence of concrete pulling crack and distortion of the wall of the chimney, the influence of the construction radius of the wall exceeding the allowable deviation, the horizontal drift of an operating platform, the verticality and the like, and particularly has poor surface appearance quality, so the construction process is generally rarely adopted at present. The suspended type triangular frame mould overturning process, the electric mould lifting process and the hydraulic sliding frame mould reversing process solve three problems of structural distortion, platform drift, asynchronous jack and the like, and obviously improve the impression quality of concrete; however, the template is generally a steel template with the thickness of 300mm to 1500mm, so that the number of seams among the steel templates is large, and the template needs to be processed by professional personnel after being disassembled, so that the processing is labor-consuming, time-consuming and labor-consuming, and the appearance quality is still regret even after the template is repaired.
Disclosure of Invention
The invention aims to solve the technical problem of providing a construction method of a chimney outer barrel of a large thermal power generating unit, which is time-saving and labor-saving in operation, can effectively control the radius of the barrel wall and improve the concrete surface impression quality of the chimney outer barrel.
The technical scheme of the invention is as follows:
a construction method of a chimney outer barrel of a large thermal power generating unit comprises the following steps:
1. manufacturing a plurality of trapezoidal outer templates according to the basic size of 3000mm in width and 1500mm in height, and correcting each outer template according to the radius change of the wall of the conical chimney;
2. formwork assembly
2.1, after a cylinder wall steel reinforcement framework with the height equivalent to that of a layer of formwork is installed, sequentially erecting a layer of outer formworks at the position line of the formwork on the foundation ring wall and enclosing the outer formworks into a circle, and mutually bonding adjacent outer formworks through double-sided adhesive tapes;
2.2, penetrating a split bolt on each outer template, and arranging three layers of split bolts along the longitudinal direction of the outer template; installing the backs of the multiple templates at the outer surfaces of the outer templates and the butt joint part of the two adjacent outer templates; a plurality of external mold purlins are longitudinally arranged on the outer side of the back of the template, and template keels are symmetrically arranged on two sides of three split bolts which are positioned on the same longitudinal line on the outer side of each external mold purlin respectively; inner sleeves are respectively sleeved on the inner sides of the outer templates on the split bolts, the inner templates are sequentially installed, each outer template corresponds to three inner templates, each inner template is sleeved on the corresponding three split bolts and abuts against the inner sleeves, and the adjacent two inner templates are mutually lapped;
2.3, installing a plurality of inner mould surrounding purlins on the inner side of the inner mould plate along the longitudinal direction, respectively installing a tripod on the inner side of each inner mould plate on three split bolts positioned on the same longitudinal line, respectively installing a top bar and a plus-minus wire on the tripod, respectively screwing nuts at two ends of the split bolts after performing radius alignment on the layer of mould plate through the plus-minus wires, and connecting and fixing the outer mould plate, the inner mould plate and all parts at two sides to form a closed circle of mould plate ring groove; connecting the tripods by using connecting rods, paving walking pedals on the tripods, and providing an operation platform for installing the next layer of template;
3. pouring concrete in the assembled annular groove of the first layer of template, sequentially repeating the step 2 on the layer of template after the concrete is initially set to assemble the next layer of template, connecting the lower end of a top bar connected to an inner triangular frame of the assembled layer of template with a connecting rod between inner triangular frames of the upper layer of template, performing radius alignment on the layer of template through a tension wire, and screwing a split bolt, so that the concrete can be poured in the annular groove of the layer of template;
4. after the concrete poured in the third layer of template is initially set, removing the first layer of template at the lowest part, correcting the first layer of template according to the radius change of the cylinder wall of the tapered chimney, and installing and using the first layer of template as a fourth layer of template; the three layers of templates are recycled for reverse formwork construction, after the sixth layer of templates are installed, a sliding frame lifting device is installed by utilizing climbing rods pre-embedded in the cylinder wall, and the sliding frame lifting device is used for lifting in sections according to the height of each layer of templates to provide a construction platform for assembling the next layer of templates; and continuously lifting the sliding frame lifting device to assist the reverse formwork construction of the three-layer formwork until the construction reaches the design height of the chimney outer barrel.
Preferably, rubber dividing strips are respectively fixed on the inner side of the upper end of each outer template before the outer templates are installed, and the rubber dividing strips are used for forming groove-shaped horizontal dividing open seams at the positions, corresponding to the horizontal seams of two adjacent outer templates, of the formed outer cylinder wall, so that the appearance quality of the horizontal seams of the templates is improved.
Preferably, before the outer templates are installed, a radian control plate is fixed on the outer side of the upper end of each outer template, so that the radian of the outer template is adjusted according to the radius size of the position of the outer cylinder wall of the chimney where the outer template is located.
Preferably, split glue plugs are respectively fixed in through holes correspondingly penetrating through split bolts on the outer formwork, the inner ends of the split glue plugs are in a cone frustum shape and abut against the inner side of the outer formwork, and the split bolts penetrate through the outer formwork through central holes of the split glue plugs respectively and are used for preventing slurry leakage at the through holes of the outer formwork when concrete is poured.
Preferably, the outer template is a high-strength birch template, and the thickness of the outer template is 18 mm.
Preferably, each inner template is formed by sequentially connecting two p3015 shaped steel templates, one p2015 shaped steel template and one collecting template through bolts.
Preferably, in the step 4, the carriage lifting device lifts 750mm of height each time, after lifting, the radius of the climbing rod is adjusted according to the size of the wall of the chimney, steel bars are bound, the climbing rod and the steel bar framework of the wall of the chimney are welded and fixed, then the height of 750mm is lifted, the steel bars are bound repeatedly, the climbing rod and the steel bar framework of the wall of the chimney are welded and fixed, and then the next layer of formwork assembly can be carried out.
Preferably, the butt joint vertical seams and the split bolts of each group of three adjacent outer formworks from bottom to top are respectively arranged on the same straight line during construction, and the two adjacent outer formworks are arranged in a staggered manner in a delta shape.
The invention has the beneficial effects that:
1. because the trapezoidal outer template is manufactured according to the basic size of 3000mm in width and 1500mm in height, the phenomena of slab staggering and slurry leakage of the concrete surface in the chimney concrete outer cylinder construction are solved by adopting the large template structure and utilizing the three-layer template reverse construction; the number of the abutted seams of the template is reduced; irregular arrangement of split bolt holes and a panda eye phenomenon; the problems of rough concrete surface, easy feeling of twisting phenomenon of the outer cylinder by the template abutted seam and other surface defects are solved; the operation is time-saving and labor-saving, the appearance quality of the concrete surface of the outer barrel of the chimney can be improved, and the standard requirement of the facing fair-faced concrete is met.
2. The sliding frame lifting device is installed by utilizing the climbing rods pre-embedded in the cylinder wall, so that a safe and stable operation platform can be provided for operators; the template system and the sliding frame lifting device have no associated structure, namely the template reinforcing system is a self-formed system, the radius of the outer cylinder wall of the chimney can be effectively controlled, and the radius qualified rate can reach 100%; meanwhile, a construction platform system formed by the sliding frame lifting device is self-systematic, and the platform lifting constraint conditions are reduced.
Drawings
Fig. 1 is a schematic structural diagram of the first-layer formwork after being assembled and poured.
Fig. 2 is a schematic view of the reinforcement of the exterior form of the present invention.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a partially enlarged view of fig. 3.
Fig. 5 is a schematic assembled structure of the second layer template of the present invention.
Fig. 6 is a schematic view of the connection of two adjacent layers of the outer formworks.
Fig. 7 is a schematic structural view of an outer mold plate used in the present invention.
Fig. 8 is a schematic structural view of an inner mold plate used in the present invention.
Fig. 9 is a schematic structural view of the carriage lifting device of the present invention after installation.
In the figure: the external formwork encloses purlin 1, template back 2, split bolt 3, template keel 4, external template 5, steel reinforcement framework 6, climbing rod 7, internal formwork 8, internal formwork encloses purlin 9, walking footboard 10, knock-out pin 11, tripod 12, plus-minus wire 13, nut 14, radian control panel 15, rubber grid 16, components of a whole that can function independently plug 17, interior sleeve pipe 18, connecting rod 19, jack 20, balladeur train hoisting device 21, fastener 22, p3015 design steel template 81, p2015 design steel template 82, receive and divide template 83.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 9, the method for constructing the outer cylinder of the chimney of the large thermal power generating unit according to the present invention comprises the following steps:
1. adopting a high-strength birch template as an outer template 5, cutting a plurality of trapezoidal outer templates 5 according to the basic size of 3000mm 1500mm 18mm in width and height, and correcting each outer template 5 according to the radius change of the wall of the conical chimney, as shown in fig. 7;
as shown in fig. 6, rubber dividing strips 16 are respectively fixed on the inner sides of the upper ends of the outer templates 5 through screws, the cross sections of the rubber dividing strips 16 are trapezoidal, and the rubber dividing strips are used for forming groove-shaped horizontal dividing open seams at the horizontal seam positions of the two adjacent outer templates 5 corresponding to the formed outer cylinder wall so as to improve the appearance quality of the horizontal seams of the templates;
the outer side of the upper end of each outer template 5 is respectively fixed with a radian control plate 15 through a screw, and the radian control plate 15 is arc-shaped and is matched with the radian of the outer edge of the chimney barrel wall, and is used for adjusting the radian of the outer template 5 according to the radius size of the position of the chimney barrel wall where the outer template 5 is located.
2. Formwork assembly
2.1, after a cylinder wall steel reinforcement framework 6 with the height equivalent to that of a layer of formwork is installed, sequentially erecting a layer of outer formworks 5 at the position line of the formwork on the foundation ring wall and enclosing the outer formworks into a circle, and mutually bonding the butt joint vertical seams between the adjacent outer formworks 5 through double-sided adhesive tapes.
2.2, penetrating a split bolt 3 on each outer template 5 respectively, wherein the split bolts 3 are arranged in three layers and three in each layer along the longitudinal direction of the outer template 5; split glue plugs 17 are respectively fixed in through holes correspondingly penetrating through the split bolts 3 on the outer template 5, the split glue plugs 17 penetrate through the corresponding through holes from the inner side of the outer template 5 and are fixed through nuts, the inner ends of the split glue plugs 17 are in a cone frustum shape and abut against the inner side of the outer template 5, and the split bolts 3 respectively penetrate through the outer template 5 from a central hole of the split glue plugs 17 and are used for preventing the slurry leakage phenomenon from occurring at the through holes of the outer template 5 when concrete is poured;
a plurality of template backs 2 are arranged at the outer surface of the outer template 5 and the butt joint of two adjacent outer templates 5, the template backs 2 are uniformly arranged, the center distance between the two adjacent template backs 2 is 300mm, and two sides of each template back 2 are respectively connected with the outer templates through hinges; a plurality of external mold purlins 1 are longitudinally arranged on the outer side of the template back 2, and the external mold purlins 1 are respectively arranged on the upper side and the lower side of each layer of split bolts 3; template keels 4 are symmetrically arranged on two sides of three split bolts 3 which are positioned on the same longitudinal line on the outer side of the outer mold surrounding purlin 1 respectively, and the template keels 4 are made of steel pipes and are equal to the height of an outer template; the fasteners 22 are respectively sleeved on the outer sides of the template keels 4 on the split bolts 3 and used for limiting the template keels 4 on the two sides.
Inner sleeves 18 are respectively sleeved on the inner sides of the outer templates on the split bolts 3 and are sequentially provided with the inner templates 8, the inner sleeves 18 are hard PVC pipes, one ends of the inner sleeves abut against the split glue plugs 17, and the other ends of the inner sleeves are tightly attached to the inner templates 8 and are used for controlling the wall thickness of the chimney wall; each outer template corresponds to three inner templates 8, each inner template 8 is sleeved on the corresponding three split bolts 3 and is abutted against the inner sleeve 18, and each inner template 8 is formed by sequentially connecting two p3015 shaped steel templates 81, one p2015 shaped steel template 82 and one collecting and separating template 83 through bolts; the adjacent two inner formworks 8 are mutually lapped through the collecting and separating formworks.
2.3, a plurality of inner mould surrounding purlins 9 are longitudinally arranged on the inner side of the inner mould plate 8, the inner mould surrounding purlins 9 are also respectively leaned against the upper side and the lower side of each layer of split bolts 3, a tripod 12 is respectively arranged on the three split bolts 3 positioned on the same longitudinal line and positioned on the inner side of each inner mould plate 8, and the vertical rods of the tripod 12 are respectively sleeved on the corresponding three split bolts 3 and pressed on the inner side of the inner mould surrounding purlin 9 to be limited through nuts; a top bar 11 and an add-subtract wire 13 are respectively arranged on the tripod 12, the lower end of the top bar 11 is fixed on the ground, and the add-subtract wire 13 is obliquely pulled between the tripod 12 and the lower end of the top bar 11; after the radius of the layer of template is aligned through the plus-minus wires 13, nuts 14 at two ends of the split bolt 3 are respectively screwed, and the outer template, the inner template 8 and all the components at two sides are connected and fixed to form a closed circle of template ring grooves; connecting rods 19 are used for connecting the tripods 12, and walking pedals 10 are laid on the tripods 12 and used for providing a working platform for the installation of the next layer of templates;
3. pouring concrete in the ring groove of the assembled first layer of template, after the concrete is initially set and meets the requirements of relevant specifications, sequentially repeating the step 2 on the layer of template to assemble the next layer of template, connecting the lower end of a top bar 11 connected to an inner side tripod 12 of the assembled template with a connecting rod 19 between the inner side tripod 12 of the upper layer of template through a buckle, performing radius alignment on the layer of template through a plus-minus wire 13, and respectively screwing a split bolt 3, so that the concrete can be continuously poured in the ring groove of the layer of template;
4. after the concrete poured in the third layer of template is initially set, removing the first layer of template at the lowest part, correcting the first layer of template according to the radius change of the cylinder wall of the tapered chimney, and installing and using the first layer of template as a fourth layer of template; the three-layer formwork is recycled for reverse formwork construction, after the sixth layer of formworks are installed, the climbing rods 7 pre-embedded in the cylinder wall are used for installing the sliding frame lifting device 21 through the jacks 20, and the sliding frame lifting device 21 is used for lifting in sections according to the height of each layer of formworks to provide a construction platform for assembling the next layer of formworks; and continuously lifting the sliding frame lifting device 21 to assist the reverse formwork construction of the three-layer formwork until the construction reaches the design height of the chimney outer cylinder.
Carriage hoisting device 21 promotes 750mm height at every turn, promotes the back and climbs 7 radiuses according to chimney barrel wall size adjustment, carries out reinforcement and will climb 7 and section of thick bamboo wall steel reinforcement framework 6 welded fastening, then promotes 750mm height again, and the repetition carries out reinforcement and will climb 7 and section of thick bamboo wall steel reinforcement framework 6 welded fastening, alright carry out next floor's template equipment afterwards.
According to the large thermal power generating unit chimney outer barrel construction method, the butt joint vertical seams of each group of three adjacent outer formworks from bottom to top and the split bolts 3 are respectively arranged on the same vertical line during construction, two adjacent groups of outer formworks are arranged in a staggered manner in a delta shape, namely the butt joint vertical seams of one group of outer formworks positioned above are positioned on the longitudinal middle lines of one group of outer formworks positioned below.
5. After the construction is finished, after the concrete is finally set and the form removal strength required by relevant specifications is achieved, the split bolts 3, the outer template 5, the inner template 8 and all reinforcing members respectively arranged on the outer side of the outer template and the inner side of the inner template 8 are sequentially disassembled, and then the holes formed by the split bolts 3 are respectively filled with mixed materials; the mixture is formed by mixing and uniformly stirring water, asbestos wool and cement according to the mass percentage of 10%, 30% and 70%, and the mixture is simultaneously filled into the holes from the inner side and the outer side of the cylinder wall respectively during filling; and tamping by using a drill rod every time when the filler is filled to be 3-5 cm thick, and repeating the steps until the plugging is completed.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (8)

1. A construction method of a chimney outer barrel of a large thermal power generating unit is characterized by comprising the following steps:
(1) manufacturing a plurality of trapezoidal outer templates according to the basic size of 3000mm in width and 1500mm in height, and correcting each outer template according to the radius change of the wall of the conical chimney;
(2) formwork assembly
2.1, after a cylinder wall steel reinforcement framework with the height equivalent to that of a layer of formwork is installed, sequentially erecting a layer of outer formworks at the position line of the formwork on the foundation ring wall and enclosing the outer formworks into a circle, and mutually bonding adjacent outer formworks through double-sided adhesive tapes;
2.2, penetrating a split bolt on each outer template, and arranging three layers of split bolts along the longitudinal direction of the outer template; installing the backs of the multiple templates at the outer surfaces of the outer templates and the butt joint part of the two adjacent outer templates; a plurality of external mold purlins are longitudinally arranged on the outer side of the back of the template, and template keels are symmetrically arranged on two sides of three split bolts which are positioned on the same longitudinal line on the outer side of each external mold purlin respectively; inner sleeves are respectively sleeved on the inner sides of the outer templates on the split bolts, the inner templates are sequentially installed, each outer template corresponds to three inner templates, each inner template is sleeved on the corresponding three split bolts and abuts against the inner sleeves, and the adjacent two inner templates are mutually lapped;
2.3, installing a plurality of inner mould surrounding purlins on the inner side of the inner mould plate along the longitudinal direction, respectively installing a tripod on the inner side of each inner mould plate on three split bolts positioned on the same longitudinal line, respectively installing a top bar and a plus-minus wire on the tripod, respectively screwing nuts at two ends of the split bolts after performing radius alignment on the layer of mould plate through the plus-minus wires, and connecting and fixing the outer mould plate, the inner mould plate and all parts at two sides to form a closed circle of mould plate ring groove; connecting the tripods by using connecting rods, paving walking pedals on the tripods, and providing an operation platform for installing the next layer of template;
(3) pouring concrete in the assembled annular groove of the first layer of template, sequentially repeating the step (2) on the layer of template after the concrete is initially set to assemble the next layer of template, connecting the lower end of a top bar connected to an inner tripod of the assembled layer of template with a connecting rod between inner tripods of the upper layer of template, performing radius alignment on the layer of template through a tension wire and screwing a split bolt, and pouring concrete in the annular groove of the layer of template;
(4) after the concrete poured in the third layer of template is initially set, removing the first layer of template at the lowest part, correcting the first layer of template according to the radius change of the cylinder wall of the tapered chimney, and installing and using the first layer of template as a fourth layer of template; the three layers of templates are recycled for reverse formwork construction, after the sixth layer of templates are installed, a sliding frame lifting device is installed by utilizing climbing rods pre-embedded in the cylinder wall, and the sliding frame lifting device is used for lifting in sections according to the height of each layer of templates to provide a construction platform for assembling the next layer of templates; and continuously lifting the sliding frame lifting device to assist the reverse formwork construction of the three-layer formwork until the construction reaches the design height of the chimney outer barrel.
2. The construction method of the outer cylinder of the chimney of the large thermal power generating unit as claimed in claim 1, wherein the construction method comprises the following steps: before the outer templates are installed, rubber dividing strips are respectively fixed on the inner side of the upper end of each outer template and used for forming groove-shaped horizontal dividing open seams at the positions, corresponding to the horizontal seams of two adjacent outer templates, of the formed outer barrel wall so as to improve the appearance quality of the horizontal seams of the templates.
3. The construction method of the outer cylinder of the chimney of the large thermal power generating unit as claimed in claim 2, wherein the construction method comprises the following steps: before the outer templates are installed, the radian control plates are respectively fixed on the outer sides of the upper ends of the outer templates, so that the radian of the outer templates can be adjusted according to the radius of the chimney outer cylinder wall where the outer templates are located.
4. The construction method of the outer cylinder of the chimney of the large thermal power generating unit as claimed in claim 3, wherein the construction method comprises the following steps: split glue plugs are respectively fixed in through holes correspondingly penetrating through split bolts on the outer template, the inner ends of the split glue plugs are in a cone frustum shape and abut against the inner side of the outer template, and the split bolts penetrate through the outer template through central holes of the split glue plugs respectively and are used for preventing the slurry leakage phenomenon at the through holes of the outer template when concrete is poured.
5. The construction method of the outer barrel of the chimney of the large thermal power generating unit according to any one of claims 1 to 4, characterized by comprising the following steps: the outer template is a high-strength birch template, and the thickness of the outer template is 18 mm.
6. The construction method of the outer cylinder of the chimney of the large thermal power generating unit as claimed in claim 1, wherein the construction method comprises the following steps: each inner template is formed by connecting two p3015 shaped steel templates, a p2015 shaped steel template and a collecting and separating template in sequence through bolts.
7. The construction method of the outer cylinder of the chimney of the large thermal power generating unit as claimed in claim 1, wherein the construction method comprises the following steps: and 4, lifting the height of 750mm by the sliding frame lifting device in step 4, adjusting the radius of the climbing rod according to the size of the wall of the chimney cylinder after lifting, binding steel bars, welding and fixing the climbing rod and the steel reinforcement framework of the cylinder wall, then lifting the height of 750mm, repeatedly binding the steel bars, welding and fixing the climbing rod and the steel reinforcement framework of the cylinder wall, and then assembling the next layer of template.
8. The construction method of the outer cylinder of the chimney of the large thermal power generating unit as claimed in claim 1, wherein the construction method comprises the following steps: during construction, butt joint vertical joints and split bolts of each group of three adjacent outer formworks are respectively arranged on the same straight line from bottom to top, and the two adjacent outer formworks are arranged in a staggered manner in a delta shape.
CN202010052601.2A 2020-01-17 2020-01-17 Construction method of outer barrel of chimney of large thermal power generating unit Withdrawn CN113137114A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101696604A (en) * 2009-09-24 2010-04-21 东北电业管理局烟塔工程公司 Construction method for chimney wall and special electric jacking flat bridge
CN101748887A (en) * 2009-12-31 2010-06-23 山西焦煤集团有限责任公司 Bin wall template construction device of cylinder bin with large diameter
US20140305070A1 (en) * 2012-06-11 2014-10-16 Zhejiang Construction Engineering Group Co., Ltd. Constructing method for concrete cylinder of construction steel bar of high-rise steel structure
CN205369905U (en) * 2016-01-29 2016-07-06 中国能源建设集团东北电力第一工程有限公司 Improved generation chimney template structure
CN209585610U (en) * 2018-11-06 2019-11-05 中机国能电力工程有限公司 A kind of round silo cavity profiled template

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101696604A (en) * 2009-09-24 2010-04-21 东北电业管理局烟塔工程公司 Construction method for chimney wall and special electric jacking flat bridge
CN101748887A (en) * 2009-12-31 2010-06-23 山西焦煤集团有限责任公司 Bin wall template construction device of cylinder bin with large diameter
US20140305070A1 (en) * 2012-06-11 2014-10-16 Zhejiang Construction Engineering Group Co., Ltd. Constructing method for concrete cylinder of construction steel bar of high-rise steel structure
CN205369905U (en) * 2016-01-29 2016-07-06 中国能源建设集团东北电力第一工程有限公司 Improved generation chimney template structure
CN209585610U (en) * 2018-11-06 2019-11-05 中机国能电力工程有限公司 A kind of round silo cavity profiled template

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
张子龙等: "滑架倒模提升装置及大块模板在烟囱工程中的应用", 《四川建材》 *
张远: "双曲线冷却塔风筒利用三脚架翻模施工技术", 《建筑技术开发》 *
朱远江等: "三角架翻模方法在烟囱外筒壁加固工程中的应用", 《四川建材》 *

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