CN114961240B - Special-shaped high-low span bottom plate construction template and construction method - Google Patents
Special-shaped high-low span bottom plate construction template and construction method Download PDFInfo
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- CN114961240B CN114961240B CN202210902343.1A CN202210902343A CN114961240B CN 114961240 B CN114961240 B CN 114961240B CN 202210902343 A CN202210902343 A CN 202210902343A CN 114961240 B CN114961240 B CN 114961240B
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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
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
- E04C5/0627—Three-dimensional reinforcements composed of a prefabricated reinforcing mat combined with reinforcing elements protruding out of the plane of the mat
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
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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
- 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
- E04G17/0657—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts fully recoverable
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Abstract
The invention relates to a special-shaped high-low span bottom plate construction template and a construction method, wherein the template comprises two L-shaped steel-plastic combined templates which are respectively arranged on the side edges of a high span and two low spans, the two L-shaped steel-plastic combined templates are connected through a first additional steel bar and a second additional steel bar which are arranged on the upper layer and the lower layer of the high span bottom plate, horizontal tie steel bars are respectively arranged on the two low span bottom plates, one end of each horizontal tie bar is fixedly connected with a vertical tie bar and an inclined tie bar which are arranged between the high span and the low span, a plurality of two-section water stopping bolts are uniformly distributed on the L-shaped steel-plastic combined templates and comprise fixed stop bolts and movable stop bolts, and the two ends of the first additional steel bar and the second additional steel bar are respectively and fixedly connected with the fixed stop bolts.
Description
Technical Field
The invention relates to the field of water plant structures, in particular to a special-shaped high-low span bottom plate construction template and a construction method, which are used for pouring a special-shaped high-low span bottom plate of a water pond constructed in a water plant.
Background
Water pollution and water resource shortage become serious restriction factors for realizing sustainable development of the economic society of China. Along with the strategic deployment of national energy conservation and emission reduction, the national attention degree and the support of water plant construction are continuously improved, the water plant construction is more and more, the scale is larger and the process design is more and more novel. The water plant structure pool is a key link of the water plant process flow and directly influences the overall operation of the water plant. The structures of the water plant engineering are divided into a plurality of areas, and the elevation of the bottom plate is changed greatly, so that the special-shaped high-low span bottom plate is increasingly important in the construction of the water plant engineering.
The construction of the steel-wood combined template commonly used for the existing special-shaped high-low span bottom plate has the following defects: the traditional steel-wood mixed template adopts a double-faced film-coated wood template, is easy to deform and has poor environmental protection and energy saving properties; the main keel of the existing commonly used steel-wood mixed template system is generally made of steel pipes, the secondary keel is generally made of square wood, the main keel and the secondary keel cannot be effectively connected, the bending strength of the wood template and the secondary keel is low, the integrity of the template system is poor, the stress is large when high-span bottom plate concrete is poured, the template is easy to deform, and the surface flatness of the concrete is poor; traditional split bolt need fix both sides template simultaneously, and length is long, and split bolt can not guarantee on same horizontal plane, makes split bolt atress uneven when pouring easily, causes the template to pour in-process poor stability, causes the running die and collapses the mould phenomenon. The length of the split bolts is long, so that when concrete is poured, the falling concrete impacts the bolts, the split bolts are easy to displace, templates on two sides move to deform, and the deviation of the section size and the appearance size of the concrete after the templates are removed is large; and the traditional split bolt is disposable, can not have enough to meet the need the use, and is with high costs. When the concrete at the high-low span position is poured, the concrete at the low-span bottom plate poured firstly can continue to be poured above the concrete when a certain bearing force is needed, the traditional template only supports the templates at two side edges of the high-low span, and the waiting time of the concrete at the low-span bottom plate for solidification is too long, so that the interval time of two times of concrete pouring is long, the control is not easy, and cold joints are easy to generate.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a special-shaped high-low span bottom plate construction template and a construction method, which can solve the technical problems mentioned in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a special-shaped high-low span bottom plate construction template comprises two L-shaped steel-plastic composite templates which are respectively arranged on the side edges of a high span and two low spans, wherein the two L-shaped steel-plastic composite templates are connected through a first additional steel bar arranged on the upper layer of the high span bottom plate and a second additional steel bar arranged on the lower layer of the high span bottom plate, horizontal tie bars are respectively arranged on the two low span bottom plates, one end of the horizontal tie bar is fixedly connected with a vertical tie bar and an inclined tie bar which are arranged between the high span and the low span, the end part of the inclined tie bar is vertically and fixedly provided with a connecting bar, the vertical tie bar and the vertical connecting bar respectively pass through a vertical ring fixedly arranged on the first additional bar and the second additional bar, the L-shaped steel-plastic combined template comprises a vertical shaped steel-plastic combined template and a horizontal shaped steel-plastic combined template, a plurality of two-section water stop bolts are uniformly distributed on the vertical shaping steel-plastic composite template and the horizontal shaping steel-plastic composite template, the two-section water stop bolt comprises a fixed section bolt and a movable section bolt, a plurality of fixed section bolts are fixedly connected with vertical tie bars and inclined tie bars, one end of each fixed section bolt is fixedly welded with a chemical bolt pre-installed on the inclined surface of the high-low span, the other end of each fixed section bolt is detachably connected with the movable section bolt, the two ends of the first additional reinforcing steel bar and the second additional reinforcing steel bar are respectively fixedly connected with the fixed cutting bolt, inclined connecting steel bars are fixedly arranged between two adjacent fixing section bolts on the vertical shaping steel-plastic composite template, the inclined connecting steel bars, the vertical tie bars and the fixed cross bolts form a triangle, and the inclined connecting steel bars, the inclined tie bars and the fixed cross bolts form a triangle.
The technical scheme of the invention is further improved as follows: composite biocord is moulded to vertical design steel and plastic composite biocord and level design steel all includes channel-section steel skeleton, the channel-section steel back of the body is stupefied and plastic formwork in pairs, the channel-section steel skeleton includes the square frame who constitutes by the channel-section steel and a plurality of channel-section steel fossil fragments of the inside vertical equidistant welded of square frame, one side welding of channel-section steel skeleton has a plurality of horizontal equidistant welded in pairs channel-section steel back of the body to be stupefied, the opposite side of channel-section steel skeleton is provided with plastic formwork, plastic formwork between stupefied clearance of channel-section steel back of the body and the channel-section steel fossil fragments all sets up a round hole that uses with two section formula stagnant water bolt cooperations in pairs.
The technical scheme of the invention is further improved as follows: the distance between two adjacent fixed cross bolts on the vertical shaping steel-plastic composite template and the horizontal shaping steel-plastic composite template is 250-300mm.
The technical scheme of the invention is further improved as follows: the fixed bolt that cuts is the external screw thread bolt with the activity, the fixed bolt that cuts can be dismantled through toper rubber end cap with the activity between the bolt of cutting and be connected, toper rubber end cap adopts and cuts the inside lining car silk steel cylinder that the bolt cooperation was used with the fixed bolt and the activity of cutting, toper rubber end cap is fixed to be set up in the inboard and outside of plastic formwork, the activity is cut the bolt and is passed through mountain type card, nut and channel-section steel skeleton joint.
The technical scheme of the invention is further improved as follows: the steel pipe bent frame is fixedly provided with a triangular structure on the side of the L-shaped steel-plastic composite template, and comprises a triangular support consisting of a bottom steel pipe support, a top steel pipe inclined support and two vertical steel pipes with the same section, and the triangular structure is formed by the two vertical steel pipes, the bottom steel pipe support and the top steel pipe inclined support through connecting cross rods.
The technical scheme of the invention is further improved as follows: a construction method of a special-shaped high-low span bottom plate comprises the following steps:
s1, assembling a template;
step S2, pouring concrete: firstly, pouring lower low-span bottom plate concrete, then pouring another higher low-span bottom plate concrete, after the lower low-span bottom plate concrete is solidified, continuously pouring concrete above the lower low-span bottom plate concrete to the top elevation of another low-span bottom plate, at the moment, the height of the two low-span poured concrete is equal to the height of the other low-span bottom plate, continuously pouring the other higher low-span concrete, and alternately pouring concrete on two sides between the high-span bottom plate and the low-span bottom plate to the bottom elevation of the high-span bottom plate;
s3, pouring high-span bottom plate concrete to a high-span bottom plate top elevation;
and S4, after the concrete is poured, removing the template after the concrete reaches the template removing strength.
The technical scheme of the invention is further improved as follows: the process of assembling the template in the step S1 comprises the following steps: after the high-span bottom plate steel bars are bound, two L-shaped steel-plastic composite templates are respectively placed on the side edges of a high span and two low spans, one end of a fixed cut bolt in a plurality of two-section type water stop bolts is screwed into a conical rubber plug, the other end of the fixed cut bolt between the bottom elevation of the high-span bottom plate and the top elevation of the low-span bottom plate is fixedly welded with a chemical bolt pre-installed on the inclined plane of the high-low span, a plurality of movable cut bolts penetrate through round holes and are screwed into the conical rubber plug and are connected with a channel steel framework through a mountain-shaped clamp and a nut to fix the two-section type water stop bolts, a first additional steel bar and a second additional steel bar are respectively arranged on the upper layer and the lower layer of the high-span bottom plate, and two ends of the first additional steel bar and the second additional steel bar are respectively welded on the fixed cut bolts on two sides, the method comprises the steps of enabling vertical tie bars and vertical connecting bars to respectively penetrate through vertical rings fixedly arranged on first additional bars and second additional bars, enabling the vertical tie bars and inclined tie bars to be welded with a plurality of fixed cross bolts, laying horizontal tie bars, welding one end of each horizontal tie bar with one end of each vertical tie bar and one end of each inclined tie bar, welding a plurality of fixed cross bolts on a horizontal forming steel-plastic combined template with the horizontal tie bars, welding inclined connecting bars between two adjacent fixed cross bolts on the vertical forming steel-plastic combined templates on two sides, enabling the inclined connecting bars, the vertical tie bars and the fixed cross bolts to form triangles, enabling the inclined connecting bars, the inclined tie bars and the fixed cross bolts to form triangles, and finally installing a steel pipe bent frame to carry out inclined support to form a stable triangular outer support structure.
The technical scheme of the invention is further improved as follows: and in the step S2, pouring is performed each time until the fixed stop bolt is just submerged.
The technical scheme of the invention is further improved as follows: the process of removing the template in the step S4 is as follows: the method comprises the steps of firstly removing the steel pipe bent, then sequentially unscrewing nuts, taking down the mountain-shaped clamps, removing paired channel steel back ridges, removing a channel steel framework and removing a plastic template from bottom to top, and after removing the plastic template, unscrewing movable cutting bolts, recycling and utilizing the fixed cutting bolts and keeping the fixed cutting bolts in concrete.
Due to the adoption of the technical scheme, the invention has the technical progress that:
1. the L-shaped steel-plastic combined template effectively combined by the plastic template, the channel steel back edge and the channel steel framework is high in bending strength, not easy to deform, recyclable, low in cost, capable of effectively protecting the environment, lighter in weight than a traditional steel template and convenient to hoist, and in addition, the steel-plastic combined template is better in reinforcing effect than the traditional plastic template, the surface of poured concrete is flat, the template can be disassembled, can be repeatedly recycled, and is high in recycling rate;
2. in order to improve the overall strength of the L-shaped steel-plastic composite template, the inner side of the L-shaped steel-plastic composite template is fixedly welded firmly with a chemical bolt pre-installed on an inclined plane of a high-low span through a fixed cutting bolt in a two-section water stop bolt. Meanwhile, the L-shaped steel-plastic composite templates on two sides are fixedly connected together through the first additional reinforcing steel bars and the second additional reinforcing steel bars arranged on the high-span bottom plate, the vertical tie reinforcing steel bars and the inclined tie reinforcing steel bars are arranged in the high-low span, the inclined tie reinforcing steel bars, the vertical tie reinforcing steel bars and the fixed cut bolts form a triangle, the inclined tie reinforcing steel bars and the fixed cut bolts form a triangle, the L-shaped steel-plastic composite templates are fixed on the inner sides of the L-shaped steel-plastic composite templates through a plurality of triangular stabilizing structures, the triangular stabilizing structures have certain reaction force on impact force generated by falling concrete during concrete pouring, meanwhile, the first additional reinforcing steel bars and the second additional reinforcing steel bars are movably connected with the vertical tie reinforcing steel bars and the vertical tie reinforcing steel bars, the first additional reinforcing steel bars and the second additional reinforcing steel bars cannot generate action force, the first additional reinforcing steel bars and the second additional reinforcing steel bars cannot deform and are always in the same horizontal plane, and the L-plastic composite templates on the other side cannot deform during the low-span concrete pouring on one side. Meanwhile, the steel pipe bent frame support with the triangular structure is adopted outside the L-shaped steel-plastic composite template, so that the overall rigidity of the L-shaped steel-plastic composite template is effectively ensured, and the stability is very good, so that the L-shaped steel-plastic composite template cannot topple outwards or inwards, the template can not be displaced or deformed during concrete pouring, the situations of mold running and mold collapsing are avoided, the surface of the poured concrete is flat, smooth and crack-free, and the size and the appearance size deviation of a concrete structure are reduced;
3. the two-section water stop bolt can be manually disassembled and repeatedly utilized, is convenient to install and disassemble, reduces the construction cost, and can be used for screwing off the movable cut bolt for recycling after pouring is finished, and the fixed cut bolt is left in concrete;
4. the shaping steel-plastic composite template is L-shaped, and the horizontal shaping steel-plastic composite template can exert a certain downward pressure on the poured low-span bottom plate concrete, so that the time for waiting for solidification of the low-span bottom plate concrete is saved by more than half compared with the traditional template, the construction waiting time is greatly shortened, the occurrence of construction cold joints is avoided, the construction time is saved, and the working efficiency is improved; meanwhile, one end of the horizontal tensile steel bar is fixedly connected with the fixed cross bolt, and the other end of the horizontal tensile steel bar is fixedly connected with the vertical tensile steel bar and the inclined tensile steel bar, so that the vertical setting steel-plastic combined template and the horizontal setting steel-plastic combined template are better and more stable in connectivity, all the horizontal tensile steel bars, part of the vertical tensile steel bars and part of the inclined tensile steel bars are poured together when the low-span floor concrete is poured, and the stability of the vertical setting steel-plastic combined template is further enhanced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic view of a first additional reinforcing bar and a second additional reinforcing bar according to the present invention;
FIG. 3 is a front view of the L-shaped steel-plastic composite shuttering of the present invention;
FIG. 4 is a side view of the L-shaped steel-plastic composite shuttering of the present invention;
FIG. 5 is a schematic cross-sectional view of the L-shaped steel-plastic composite formwork of the present invention;
FIG. 6 is an enlarged schematic view taken at A in FIG. 1 according to the present invention;
FIG. 7 is a schematic view of a two-section water stop bolt according to the present invention;
FIG. 8 is a schematic cross-sectional view of a triangular steel tube bent support structure according to the present invention;
FIG. 9 is a schematic plan view of the triangular steel tube bent support connection structure of the present invention;
the steel-plastic composite formwork comprises, by weight, 1 part of a high span, 2 parts of a low span, 3 parts of an L-shaped steel-plastic composite formwork, 3-1 parts of a vertical-shaped steel-plastic composite formwork, 3-2 parts of a horizontal-shaped steel-plastic composite formwork, 4 parts of a first additional steel bar, 5 parts of a second additional steel bar, 6 parts of a horizontal tie bar, 7 parts of a vertical tie bar, 8 parts of an inclined tie bar, 9 parts of a vertical connecting steel bar, 10 parts of a vertical ring, 11 parts of a two-section water stop bolt, 11-1 parts of a fixed cross bolt, 11-2 parts of a movable cross bolt, 12 parts of an inclined connecting steel bar, 13 parts of a channel steel framework, 13-1 parts of a square frame, 13-2 parts of a channel steel keel, 14 parts of a channel steel back arris, 15 parts of a plastic formwork, 16 parts of a round hole, 17 parts of a conical rubber plug, 18 parts of a mountain-shaped clamp, 19 parts of a nut, 20 parts of a steel pipe bent frame, 20 parts of a bottom steel pipe support, 20-2 parts of a top steel pipe inclined support, 20-3 parts of a steel pipe, 20-4 parts of a vertical cross rod, 21 parts of a chemical bolt.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in fig. 1 to 3, the special-shaped high-low span bottom plate construction formwork comprises two L shaped steel-plastic composite formworks 3 respectively arranged on the side edges of a high span 1 and two low spans 2, the two L shaped steel-plastic composite formworks 3 are connected with each other through a first additional steel bar 4 arranged on the upper layer of the high span 1 bottom plate and a second additional steel bar 5 arranged on the lower layer of the high span 1 bottom plate, horizontal tie bars 6 are respectively arranged on the two low spans 2 bottom plates, one end of each horizontal tie bar 6 is fixedly connected with a vertical tie bar 7 and an inclined tie bar 8 arranged between the high span and the low span, the end part of each inclined tie bar 8 is vertically and fixedly provided with a vertical connecting steel bar 9, the vertical tie bar 7 and the vertical connecting bar 9 respectively penetrate through vertical rings 10 fixedly arranged on the first additional steel bar 4 and the second additional steel bar 5, the L shaped steel-plastic composite formwork 3 comprises a vertical shaped steel-plastic composite formwork 3-1 and a horizontal shaped steel-plastic composite formwork 3-2, a plurality of bolt-type bolt-joint-type water stop bolts 11 mm are uniformly distributed between the vertical shaped steel-plastic composite formwork 3-1 and the horizontal tie bar 3-2. The two-section type water stop bolt 11 comprises a fixed section bolt 11-1 and a movable section bolt 11-2, the fixed section bolts 11-1 are fixedly connected with a vertical tie bar 7 and an inclined tie bar 8, one end of each fixed section bolt 11-1 is fixedly welded with a chemical bolt 21 which is pre-installed on an inclined plane of a high-low span, the other end of each fixed section bolt is detachably connected with the movable section bolt 11-2, two ends of a first additional steel bar 4 and a second additional steel bar 5 are fixedly connected with the fixed section bolts 11-1 respectively, an inclined connecting steel bar 12 is fixedly arranged between every two adjacent fixed section bolts 11-1 on the vertical shaped steel-plastic composite template 3-1, the inclined connecting steel bar 12, the vertical tie bar 7 and the fixed section bolts 11-1 form a triangle, and the inclined connecting steel bar 12, the inclined tie bar 8 and the fixed section bolts 11-1 form a triangle.
As shown in fig. 4 to 5, the vertical forming steel-plastic composite formwork 3-1 and the horizontal forming steel-plastic composite formwork 3-2 both comprise a channel steel framework 13, paired channel steel back ridges 14 and a plastic formwork 15, the channel steel framework 13 comprises a square frame 13-1 consisting of channel steel and a plurality of channel steel keels 13-2 longitudinally welded at equal intervals in the square frame 13-1, one side of the channel steel framework 13 is welded with a plurality of paired channel steel back ridges 14 transversely welded at equal intervals and capable of enhancing the strength of the L forming steel-plastic composite formwork 3, the other side of the channel steel framework 13 is provided with the plastic formwork 15, the channel steel back ridges 14 and the L forming steel composite formwork 3 effectively combined with the steel-plastic framework 13 are high in bending strength, not easy to deform, recoverable, low in cost, and capable of effectively protecting the environment, and lighter in weight and convenient to hoist than a traditional steel formwork, in addition, the reinforcing effect of the steel-plastic composite formwork is better than that of the traditional plastic formwork, the concrete surface after pouring is flat, the formwork is detachable, and can be repeatedly used, and the recycling rate is high. And a round hole 16 matched with the two-section water stop bolt 11 is formed in the gap between the paired channel steel back edges 14 and the plastic template 15 between the channel steel keels.
As shown in fig. 6 to 7, the fixed cut bolt 11-1 and the movable cut bolt 11-2 are both external thread bolts, the fixed cut bolt 11-1 and the movable cut bolt 11-2 are detachably connected through a tapered rubber plug 17, the tapered rubber plug 17 is a lining lathing steel cylinder used in cooperation with the fixed cut bolt 11-1 and the movable cut bolt 11-2, the tapered rubber plug 17 is fixedly arranged on the inner side and the outer side of the plastic formwork 15, and the movable cut bolt 11-2 is connected with the channel steel framework 13 through a chevron-shaped clamp 18 and a nut 19.
In order to improve the overall strength of the L-shaped steel-plastic composite template 3, the inner side of the L-shaped steel-plastic composite template 3 is fixedly welded firmly with a chemical bolt 12 which is pre-installed on an inclined surface with a high span through a fixed cut bolt 11-1 in a two-section water stop bolt 11. Meanwhile, the vertical steel-plastic composite formworks 3-1 at two sides are fixedly connected together through the first additional reinforcing steel bars 4 and the second additional reinforcing steel bars 5 arranged on the high-span bottom plate, the vertical tie reinforcing steel bars 7 and the inclined tie reinforcing steel bars 8 are arranged in the high-low span, the inclined tie reinforcing steel bars 12, the vertical tie reinforcing steel bars 7 and the fixed cross bolts 11-1 form a triangle, the inclined tie reinforcing steel bars 12, the inclined tie reinforcing steel bars 8 and the fixed cross bolts 11-1 form a triangle, so that the L steel-plastic composite formworks 3 are fixed on the inner sides of the L steel-plastic composite formworks 3 through a plurality of triangular stabilizing structures, when concrete is poured, a plurality of triangular stabilizing structures have certain reaction force on impact force generated by falling concrete, meanwhile, the first additional reinforcing steel bars 4 and the second additional reinforcing steel bars 5 are movably connected with the vertical tie reinforcing steel bars 7 and the vertical tie reinforcing steel bars 9, the impact force of the falling concrete cannot generate action force on the first additional reinforcing steel bars 4 and the second additional reinforcing steel bars 5, the first additional reinforcing steel bars 4 and the second additional reinforcing steel bars 5 do not deform, and therefore, when the L steel-plastic composite formworks are poured on one side of the same horizontal plane, a plurality of the L steel-plastic composite formworks cannot deform.
Furthermore, as shown in fig. 8 to 9, a steel pipe bent 20 with a triangular structure is fixedly arranged at a side of the L-shaped steel-plastic composite formwork 3, the steel pipe bent 20 includes a triangular support composed of a bottom steel pipe support 20-1, a top steel pipe inclined support 20-2 and two vertical steel pipes 20-3 with the same cross section, and the two vertical steel pipes 20-3, the bottom steel pipe support 20-1 and the top steel pipe inclined support 20-2 form a stable triangular structure through a connecting cross rod 20-4, so that the overall rigidity of the L-shaped steel-plastic composite formwork is effectively ensured, the stability is very good, the L-shaped steel-plastic composite formwork does not topple outwards or inwards, the formwork does not displace or deform during concrete pouring, the occurrence of formwork running and collapsing is avoided, the surface of poured concrete is flat, smooth and has no crack, and the size and the external dimension deviation of the concrete structure are reduced.
A construction method of a special-shaped high-low span bottom plate comprises the following steps:
s1, assembling the template, wherein the template assembling process comprises the following steps: after the reinforcement of a high-span 1 bottom plate, two L-shaped steel-plastic composite templates 3 are respectively placed on the side edges of a high-span 1 and two low-span 2, one end of a fixed cut bolt 11-1 in a plurality of two-section water stop bolts 11 is screwed into a conical rubber plug 17, the other end of the fixed cut bolt 11-1 between the bottom elevation of the high-span 1 bottom plate and the top elevation of the low-span 2 bottom plate is fixedly welded firmly with a chemical bolt 21 pre-installed on the inclined plane of the high-low span, a plurality of movable cut bolts 11-2 are screwed into the conical rubber plug 17 after penetrating through a round hole 16 and are connected with a channel steel framework 13 through a mountain-shaped clamp 18 and a nut 19 so as to fix the two-section water stop bolts 11, a first additional reinforcement 4 and a second additional reinforcement 5 are respectively arranged on the upper layer and the lower layer of the high-span 1 bottom plate, the two ends of a first additional steel bar 4 and a second additional steel bar 5 are respectively welded on fixed section bolts 11-1 at two sides, a vertical tie steel bar 7 and a vertical connecting steel bar 9 respectively pass through a vertical ring 10 fixedly arranged on the first additional steel bar 4 and the second additional steel bar 5, the vertical tie steel bar 7 and an inclined tie steel bar 8 are welded with a plurality of fixed section bolts 11-1, then a horizontal tie steel bar 6 is laid, one end of the horizontal tie steel bar 6 is welded with one end of the vertical tie steel bar 7 and one end of the inclined tie steel bar 8, a plurality of fixed section bolts 11-1 on a horizontal shaped steel-plastic combined template 3-2 are welded with the horizontal tie steel bar 6, an inclined connecting steel bar 12 is welded between two adjacent fixed section bolts 11-1 on the vertical shaped steel-plastic combined template 3-1 at two sides, the inclined connecting steel bar 12, the vertical tie steel bar 7 and the fixed section bolts 11-1 form a triangle, the inclined connecting steel bars 12, the inclined tie steel bars 8 and the fixed cut bolts 11-1 form a triangle, and finally, the steel pipe bent frames 20 are installed for inclined support to form a stable triangular outer support structure;
step S2, pouring concrete: firstly, pouring lower low-span 2 bottom plate concrete, then pouring another higher low-span 2 bottom plate concrete, pouring all horizontal tensile steel bars 6, partial vertical tensile steel bars 7 and inclined tensile steel bars 12 together when pouring the low-span 2 bottom plate concrete, and further strengthening the stability of the vertical shaping steel-plastic composite template 3-1. The horizontal shaping steel-plastic combined template 3-2 is arranged, so that certain downward pressure can be applied to the poured concrete with the lower span 2, the waiting time of the concrete with the lower span 2 for solidification is saved by more than half compared with the traditional template, the construction waiting time is greatly shortened, the occurrence of construction cold joints is avoided, the construction time is saved, and the working efficiency is improved.
After the lower bottom plate with the low span 2 is solidified, continuously pouring concrete above the lower bottom plate with the low span 2 to the top elevation of the other bottom plate with the low span 2, wherein the concrete poured by the two low spans 2 has the same height, continuously pouring the concrete from the other lower bottom plate with the high span 2, pouring the concrete until the concrete just passes through the fixed cut bolt 11-1 each time when alternately pouring, arranging the fixed cut bolts 11-1 of the vertical shaping steel-plastic combined template 3-1 at the two sides at the same height, being convenient for workers to control the position of each pouring at the two sides to be the same height, and alternately pouring the concrete at the two sides between the bottom plate with the high span 1 and the bottom plate with the low span 2 to be the bottom elevation of the bottom plate with the high span 1,
s3, pouring high-span 1 bottom plate concrete to a high-span 1 bottom plate top elevation;
s4, after the concrete pouring is finished, the formwork is dismantled after the concrete reaches the formwork dismantling strength, and the formwork dismantling process is as follows: the steel pipe bent 20 is firstly dismounted, then the nuts 19 are sequentially unscrewed from bottom to top, the mountain-shaped clamps 18 are taken down, the paired channel steel back ridges 14 are dismounted, the channel steel framework is dismounted, the plastic formwork 15 is dismounted, the movable cut bolts 11-2 are unscrewed for recycling after the plastic formwork 15 is dismounted, the fixed cut bolts 11-1 are left in concrete, the two-section water stop bolts 6 can be manually dismounted and can be repeatedly used, mounting and dismounting are convenient, and construction cost is reduced.
Claims (6)
1. The utility model provides a bottom plate construction templates is striden to dysmorphism height which characterized in that: the steel-plastic composite formwork comprises two L-shaped steel-plastic composite formworks (3) which are respectively arranged on the sides of a high-span (1) and two low-span (2), wherein the two L-shaped steel-plastic composite formworks (3) are connected through a first additional steel bar (4) arranged on the upper layer of the high-span (1) bottom plate and a second additional steel bar (5) arranged on the lower layer of the high-span (1) bottom plate, the two L-shaped steel-plastic composite formworks (3) are respectively connected with a horizontal tie bar (6) arranged on the bottom plate of the low-span (2), one end of the horizontal tie bar (6) is fixedly connected with a vertical tie bar (7) and an inclined tie bar (8) which are arranged between the high-span and the low-span, the end part of the inclined tie bar (8) is vertically and fixedly provided with a vertical connecting steel bar (9), the vertical tie bar (7) and the vertical connecting bar (9) respectively penetrate through a first additional steel bar (4) and a second additional steel bar (5), the vertical ring (10) fixedly arranged on the vertical tie bar (1-plastic composite formwork (3-1) and the horizontal steel-plastic composite formwork (13), and the steel-plastic composite formwork (13) comprise a steel-plastic framework (1-plastic composite formwork (13) and a steel-plastic framework (13), and a steel-plastic framework (13) which are respectively arranged on the steel-plastic composite formwork (1-plastic composite formwork (13), and a steel-plastic framework (13) comprising a steel-plastic framework (13) which are arranged on the steel-plastic composite formwork (1-plastic framework (13) respectively arranged on the steel-plastic composite formwork (1-plastic framework (13), and a steel-plastic framework (13) which are arranged on the steel-plastic framework (1-plastic framework (13), and a steel-plastic framework (13) respectively ) Inside vertical equidistant welded a plurality of channel-section steel fossil fragments (13-2), the welding of one side of channel-section steel skeleton (13) has a plurality of horizontal equidistant welded channel-section steel back of the body stupefied (14), the opposite side of channel-section steel skeleton (13) is provided with plastic formwork (15), plastic formwork (15) between stupefied (14) of channel-section steel back of the body and the channel-section steel fossil fragments in pairs all set up one with two section formula stagnant water bolt (11) cooperation round hole (16) that use, the steel is moulded to built-up form (3-1) is moulded to vertical design and is moulded to steel with level design steel and is moulded the built-up form (3-2) and go up the equipartition and be provided with a plurality of two section formula stagnant water bolt (11), two section formula stagnant water bolt (11) are including fixed bolt (11-1) and activity bolt (11-2), the fixed cut bolts (11-1) are fixedly connected with the vertical tie bars (7) and the inclined tie bars (8), one ends of the fixed cut bolts (11-1) are fixedly and firmly welded with the chemical bolts (21) which are pre-installed on the inclined planes of the high-low spans, the other ends of the fixed cut bolts are detachably connected with the movable cut bolts (11-2), two ends of the first additional steel bar (4) and two ends of the second additional steel bar (5) are fixedly connected with the fixed cut bolts (11-1), and the inclined tie bars are fixedly arranged between two adjacent fixed cut bolts (11-1) on the vertical shaping steel-plastic combined template (3-1) (12) The L-shaped steel-plastic composite formwork is characterized in that the inclined connecting steel bars (12), the vertical tie steel bars (7) and the fixed cut bolts (11-1) form a triangle, the inclined connecting steel bars (12), the inclined tie steel bars (8) and the fixed cut bolts (11-1) form a triangle, a steel pipe bent (20) with a triangular structure is fixedly arranged on the side edge of the L-shaped steel-plastic composite formwork (3), the steel pipe bent (20) comprises a triangular support consisting of a bottom steel pipe support (20-1), a top steel pipe inclined support (20-2) and two vertical steel pipes (20-3) with the same section, and the triangular structure is formed between the two vertical steel pipes (20-3), the bottom steel pipe support (20-1) and the top steel pipe inclined support (20-2) through connecting cross rods (20-4).
2. The special-shaped high-low span bottom plate construction formwork of claim 1, wherein: the distance between two adjacent fixed cross bolts (11-1) on the vertical shaping steel-plastic combined template (3-1) and the horizontal shaping steel-plastic combined template (3-2) is 250-300mm.
3. The special-shaped high-low span bottom plate construction formwork of claim 1, wherein: the fixed cutting bolt (11-1) and the movable cutting bolt (11-2) are external thread bolts, the fixed cutting bolt (11-1) and the movable cutting bolt (11-2) are detachably connected through a conical rubber plug (17), the conical rubber plug (17) adopts a lining lathing steel cylinder matched with the fixed cutting bolt (11-1) and the movable cutting bolt (11-2) for use, the conical rubber plug (17) is fixedly arranged on the inner side and the outer side of a plastic template (15), and the movable cutting bolt (11-2) is connected with a channel steel framework (13) through a mountain-shaped clamp (18) and a nut (19).
4. A construction method of a special-shaped high-low span bottom plate is characterized by comprising the following steps: the method comprises the following steps:
s1, assembling the template, wherein the template assembling process comprises the following steps: after the reinforcement of a bottom plate of a high span (1) is bound, two L-shaped steel-plastic combined templates (3) are respectively placed on the side edges of the high span (1) and two low spans (2), one ends of fixed cut bolts (11-1) in a plurality of two-section type water stop bolts (11) are respectively screwed into conical rubber plugs (17), the other ends of the fixed cut bolts (11-1) in the high span (1) and the low span (2) between the bottom elevation of the bottom plate and the top elevation of the bottom plate are fixedly welded firmly with chemical bolts (21) pre-installed on the inclined surface of the high and low spans, a plurality of movable cut bolts (11-2) are screwed into the conical rubber plugs (17) after penetrating through round holes (16) and are connected with a channel steel framework (13) through mountain-shaped clamps (18) and nuts (19) so as to fix the two-section type water stop bolts (11), a first additional reinforcement (4) and a second additional reinforcement (5) are respectively arranged on the upper layer and the lower layer of the bottom plate of the high span (1), two ends of the first additional reinforcement (4) and the second additional reinforcement (5) are respectively welded with vertical tie bolts (7) and vertical tie bars (7) of the vertical tie bars (7), then laying horizontal tie bars (6), welding one end of each horizontal tie bar (6) with one end of each vertical tie bar (7) and one end of each inclined tie bar (8), welding a plurality of fixed cut bolts (11-1) on each horizontal forming steel-plastic composite template (3-2) with the horizontal tie bars (6), welding inclined connecting steel bars (12) between two adjacent fixed cut bolts (11-1) on the vertical forming steel-plastic composite templates (3-1) on two sides, forming triangles by the inclined connecting steel bars (12), the inclined tie bars (8) and the fixed cut bolts (11-1) and the fixed cut bolts (7-1), forming triangles, and finally installing a steel pipe bent frame (20) for inclined support to form a triangular outer support structure;
step S2, pouring concrete: firstly, pouring lower low-span (2) bottom plate concrete, then pouring another higher low-span (2) bottom plate concrete, after the lower low-span (2) bottom plate concrete is solidified, continuously pouring concrete above the lower low-span (2) bottom plate to the top elevation of another low-span (2) bottom plate, at the moment, the concrete poured by the two low-span (2) is as high as the height, continuously pouring from the other higher low-span (2) concrete, and alternately pouring the concrete on two sides between the high-span (1) bottom plate and the low-span (2) bottom plate to the bottom elevation of the high-span (1) bottom plate;
s3, continuously pouring concrete to the top elevation of the bottom plate of the high span (1);
and S4, after the concrete is poured, removing the template after the concrete reaches the template removing strength.
5. The construction method of the special-shaped high-low span bottom plate according to claim 4, characterized in that: and in the step S2, the steel is alternately poured until the steel just passes through the fixed stop bolt (11-1) each time.
6. The construction method of the special-shaped high-low span bottom plate according to claim 4, characterized in that: the process of removing the template in the step S4 is as follows: the method comprises the steps of firstly removing a steel pipe bent frame (20), then sequentially unscrewing nuts (19), removing a mountain-shaped clamp (18), removing paired channel steel back ribs (14), removing a channel steel framework and removing a plastic template (15) from bottom to top, unscrewing movable cut bolts (11-2) after removing the plastic template (15), and keeping fixed cut bolts (11-1) in concrete.
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| CN204040457U (en) * | 2014-08-27 | 2014-12-24 | 中国建筑第二工程局有限公司 | Wood frame plastic formwork system |
| WO2016084996A1 (en) * | 2014-11-27 | 2016-06-02 | 주식회사 한국록셀보드 | Clamp for form and method for constructing outside thermal insulation concrete wall using same |
| CN113338617A (en) * | 2021-06-29 | 2021-09-03 | 中国建筑第二工程局有限公司 | One-time pouring template system for roof ultrahigh parapet and construction method thereof |
| CN214246617U (en) * | 2020-11-11 | 2021-09-21 | 北京城建六建设集团有限公司 | Unilateral mould bearing structure is striden to height |
| CN216340912U (en) * | 2021-11-23 | 2022-04-19 | 深圳建业工程集团股份有限公司 | Structure is established to unilateral template of foundation sole height stride |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569330B (en) * | 2015-12-18 | 2017-12-05 | 中国建筑第二工程局有限公司 | Building outer frame large-section special-shaped column reinforced formwork and construction method thereof |
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- 2022-07-29 CN CN202210902343.1A patent/CN114961240B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204040457U (en) * | 2014-08-27 | 2014-12-24 | 中国建筑第二工程局有限公司 | Wood frame plastic formwork system |
| WO2016084996A1 (en) * | 2014-11-27 | 2016-06-02 | 주식회사 한국록셀보드 | Clamp for form and method for constructing outside thermal insulation concrete wall using same |
| CN214246617U (en) * | 2020-11-11 | 2021-09-21 | 北京城建六建设集团有限公司 | Unilateral mould bearing structure is striden to height |
| CN113338617A (en) * | 2021-06-29 | 2021-09-03 | 中国建筑第二工程局有限公司 | One-time pouring template system for roof ultrahigh parapet and construction method thereof |
| CN216340912U (en) * | 2021-11-23 | 2022-04-19 | 深圳建业工程集团股份有限公司 | Structure is established to unilateral template of foundation sole height stride |
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