CN111305455A - Concrete permanent formwork system and construction method thereof - Google Patents
Concrete permanent formwork system and construction method thereof Download PDFInfo
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- CN111305455A CN111305455A CN202010081782.1A CN202010081782A CN111305455A CN 111305455 A CN111305455 A CN 111305455A CN 202010081782 A CN202010081782 A CN 202010081782A CN 111305455 A CN111305455 A CN 111305455A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/06—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against corrosion by soil or water
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/642—Protecting metallic construction elements against corrosion
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
- E04B2/8647—Walls made by casting, pouring, or tamping in situ made in permanent forms with ties going through the forms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/38—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels
- E04C2/382—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure with attached ribs, flanges, or the like, e.g. framed panels with a frame of concrete or other stone-like substance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a concrete permanent formwork system and a construction method thereof, wherein the concrete permanent formwork system comprises a concrete permanent formwork, a plurality of back beams and a plurality of back frames, a plurality of ribs are arranged on the inner side surface of the concrete permanent formwork, threaded through holes are arranged on the ribs, a plurality of connecting hole groups are arranged on the back surface of the concrete permanent formwork, each connecting hole group comprises a plurality of connecting blind holes, the back beams are connected with the concrete permanent formwork, and the back frames are connected with the back beams. The back beam is connected with the back surface of the permanent concrete template through the connecting blind holes, the back beam is supported by the back frame, when the pouring is finished, the back beam and the back frame are detached, the permanent concrete template can be permanently left on the surface of a common reinforced concrete structure and is firmly connected, and the structure of the permanent concrete template is not damaged by the detachment and installation of the back beam, so that the corrosion of chloride ions can be better resisted, the overall service life is prolonged, and the construction and maintenance cost is reduced.
Description
Technical Field
The invention relates to a concrete permanent formwork system and a construction method thereof in the field of building construction.
Background
The chloride ions have strong penetrating power, can enter the reinforced concrete structure through the micropores of the concrete and are adsorbed at the passivation film on the surface of the reinforcing steel bar, and when the concentration (critical value) is reached, the pH value at the position can be rapidly reduced, so that the local passivation film on the surface of the reinforcing steel bar is damaged, the reinforcing steel bar is corroded, and the stressed section of the reinforcing steel bar is reduced; after the reinforcing steel bar is corroded, the volume of the reinforcing steel bar expands, so that a concrete protective layer of the reinforcing steel bar is cracked, peeled and damaged, and bond between the reinforcing steel bar and the concrete is damaged. The bearing capacity and durability of the reinforced concrete structure in the marine environment are reduced due to the corrosion of chlorine ions in seawater, sea wind and sea fog, and even the reinforced concrete structure is damaged, so that the service life of the reinforced concrete structure is seriously shortened.
In order to improve the chlorine ion invasion resistance of a reinforced concrete structure in marine environmental engineering, prevent the reinforced concrete structure from being damaged prematurely due to chlorine ion corrosion, improve the durability of the reinforced concrete structure and prolong the service life of the marine environmental engineering, the main technical measures at present are to adopt seawater corrosion resistant concrete (high-performance concrete, latex modified concrete and concrete doped with a rust inhibitor), coat a protective layer on the surface of the concrete, adopt coated steel bars or coated steel bars and cathode protection, and the technical measures delay the time of the beginning of the corrosion of the steel bars to a certain extent, but have the problems of high cost, difficult construction, uncertain anticorrosion effect and the like. The ultra-high performance concrete which is an ultra-high performance cement-based material developed in recent years has extremely high mechanical property, excellent volume stability, ultra high strength and durability, the compressive strength of the ultra-high performance concrete can reach 150MPa, the electric flux is lower than 100C, the sulfate resistance grade exceeds KS150, the frost resistance grade exceeds F500, the service life of the ultra-high performance concrete can possibly reach 200 years, the ultra-high performance concrete is applied to marine environmental engineering at present, but the cost is high, the unit price is 5-10 times that of common concrete, and the popularization and the application are restricted.
In order to overcome the defects of the existing chlorine ion corrosion resistant technology of the reinforced concrete engineering and reduce the chlorine ion corrosion resistant cost of the reinforced concrete structure engineering, the idea of utilizing an ultra-high performance concrete permanent template (hereinafter referred to as a concrete permanent template) as the outer surface layer of the reinforced concrete structure in the marine environment is provided, namely, the template is made of ultra-high performance concrete, the template is not detached after the common reinforced concrete structure is formed and is permanently enclosed on the outer surface layer of the common reinforced concrete structure, and the corrosion resistance of the reinforced concrete structure in the marine environment is improved by utilizing the excellent chlorine ion corrosion resistant performance of the template. But the prior template system (wood template system and steel template system) and the disassembly-free metal mesh template system and the use method thereof are not suitable for concrete permanent templates.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and provides a concrete permanent formwork system and a construction method thereof, which can resist the corrosion of chloride ions and prolong the service life of reinforced concrete mechanism engineering in marine environment.
According to the embodiment of the first aspect of the invention, a plurality of ribs which are arranged longitudinally are arranged on the inner side surface of the concrete permanent formwork, at least one threaded through hole which can penetrate through the ribs and the concrete permanent formwork is arranged on each rib, a plurality of connecting hole groups are arranged on the back surface of the concrete permanent formwork, and each connecting hole group comprises a plurality of connecting blind holes which are distributed longitudinally; the back beams are connected with the connecting blind holes of the concrete permanent formwork; a plurality of back frames for supporting the back beams, the back frames being connected to the back beams.
According to the embodiment of the first aspect of the present invention, further, the back beam includes two steel beams arranged in parallel at intervals, a gap is formed between the two steel beams, and two ends and a middle of the two steel beams are respectively connected through the connecting plate.
According to an embodiment of the first aspect of the present invention, further, the back beam is fixed to the back surface of the concrete permanent formwork through a first connecting bolt, and the first bolt penetrates through the gap of the back beam and then is in threaded connection with the connecting blind hole.
According to an embodiment of the first aspect of the present invention, further, a top of the back beam is provided with a hanging ring.
According to an embodiment of the first aspect of the present invention, the back frame further includes a support rod, a plurality of diagonal support rods, and a plurality of first connecting members, each of the first connecting members is connected to a corresponding back beam through a second connecting bolt, each of the first connecting members is connected to the support rod through at least one diagonal support rod, and an adjusting mechanism is disposed at a bottom of the support rod.
According to a second aspect of the present invention, there is provided a method of constructing a concrete permanent formwork system, comprising the steps of:
firstly, fixing a back beam and a back frame on the back of each concrete permanent formwork in sequence;
secondly, hoisting each concrete permanent template to a position to be installed;
fixing two opposite concrete permanent formworks by using split bolts, and forming a pouring space between the concrete permanent formworks;
and fourthly, pouring concrete slurry into the pouring space, removing the back beam and the back frame after the concrete strength reaches the standard, and cutting off the split bolts exposed out of the concrete permanent template.
According to the embodiment of the second aspect of the invention, further, in the first step, the back surface of the concrete permanent formwork is placed upwards and laid on a flat place, the first connecting bolt penetrates through the back beam and then is fixed into the connecting blind hole, and then the second connecting bolt is used for fixing the first connecting piece of the back frame on the back beam.
According to an embodiment of the second aspect of the present invention, further, in the second step, after the concrete permanent formwork is installed, the perpendicularity of the concrete permanent formwork is adjusted through the adjusting mechanism.
According to the embodiment of the second aspect of the present invention, further, the adjusting mechanism includes a threaded sleeve and a screw rod, the threaded sleeve is fixed at the bottom of the support rod of the back frame, a base is arranged at the bottom of the screw rod, the screw rod is in threaded connection with the threaded sleeve, and the screw rod is rotated to adjust the height of the back frame.
According to the second embodiment of the invention, further, in the fourth step, after the concrete strength reaches 50% of its design strength, the back beam is firstly hung by the hoisting device, the connection between the back beam and the concrete permanent formwork is removed, and then the back beam and the back frame are hoisted away.
The invention has the beneficial effects that: the back beam is connected with the back surface of the permanent concrete template through the connecting blind holes, the back beam is supported by the back frame, when the pouring is finished, the back beam and the back frame are detached, the permanent concrete template can be permanently left on the surface of a common reinforced concrete structure and is firmly connected, and the structure of the permanent concrete template is not damaged by the detachment and installation of the back beam, so that the corrosion of chloride ions can be better resisted, the overall service life is prolonged, and the construction and maintenance cost is reduced.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic structural view of a permanent concrete form according to the present invention;
FIG. 2 is a side view of a permanent concrete form of the present invention;
FIG. 3 is a schematic view of the construction of the back beam of the present invention;
FIG. 4 is a schematic structural view of the back frame of the present invention;
FIG. 5 is a schematic view of the adjusting mechanism of the back frame of the present invention;
FIG. 6 is a schematic structural view of a concrete permanent formwork system of the present invention;
FIG. 7 is an enlarged schematic view of circle A of FIG. 6;
fig. 8 is a schematic illustration of the concrete permanent formwork system of the present invention after installation.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
The concrete permanent formwork system according to an embodiment of the present invention includes a concrete permanent formwork 10, a plurality of back beams 20, and a plurality of back frames 30 for supporting the back beams 20.
Referring to fig. 1 to 2, a plurality of ribs 11 are arranged longitudinally on the inner side of the concrete permanent formwork 10, each rib 11 is provided with at least one threaded through hole 12 capable of penetrating through the rib 11 and the concrete permanent formwork 10, the back of the concrete permanent formwork 10 is provided with a plurality of connecting hole groups, and each connecting hole group comprises a plurality of connecting blind holes 13 distributed longitudinally. The connecting hole groups are respectively positioned on the back surface of the rib 11, connecting blind holes in the connecting hole groups are longitudinally distributed at intervals along the length direction of the rib, preferably, the connecting blind holes 13 are screw holes, and the depth of the connecting blind holes 13 is less than the sum of the thickness of the concrete permanent formwork 11 and the thickness of the rib 11. The ribs 11 can be integrally formed with the concrete permanent formwork 10, and the arrangement of the ribs 11 can reinforce the connection between the concrete permanent formwork 10 and a common reinforced concrete structure.
The back beam 20 is connected with the blind connecting holes 13 of the concrete permanent formwork 10. Referring to fig. 3 and 6, alternatively, the back beam 20 includes two steel beams 21 arranged in parallel at intervals, a gap is formed between the two steel beams 21, and both ends and the middle of the two steel beams 21 are connected by a connecting plate 22. The back beam 20 is fixed to the back surface of the concrete permanent form 10 by a first coupling bolt 51, which is threaded into the coupling blind hole 13 after passing through the gap of the back beam 20. Further, the top of the back beam 20 is provided with a hanging ring 23 to facilitate the lifting of the back beam 20 and the whole concrete permanent formwork system.
Referring to fig. 6 to 8, a back frame 30 is connected to the back beam 20 to support the back beam 20 and the concrete permanent forms 10. Referring to fig. 4, the back frame 30 includes a support rod 31, a plurality of diagonal rods, and a plurality of first connecting members 32, each first connecting member 32 is connected to a corresponding back beam by a second connecting bolt 52, each first connecting member 32 is connected to the support rod 31 by at least one diagonal rod, and the bottom of the support rod 31 is provided with an adjusting mechanism 40. Optionally, the inclined struts include a plurality of first inclined struts 33 and a plurality of second inclined struts 34, one end of each first inclined strut 33 is connected to the corresponding first connecting member 32, the other end of each first inclined strut 33 is connected to the side of the supporting rod 31 through a second connecting member 35, both ends of each second inclined strut 34 are connected to each first connecting member 32 and the second connecting member 35 adjacent thereto, respectively, and a triangular stable structure is formed between the first inclined strut 33, the second inclined strut 34 and the supporting rod 31 to strengthen the supporting effect of the back frame 30 on the back beam and the permanent concrete form 10.
In this embodiment, referring to fig. 5, the adjusting mechanism 40 includes a threaded sleeve 41 and a screw rod 42, the threaded sleeve 41 is fixed at the bottom of the support rod 31 of the back frame 30, a base 43 is disposed at the bottom of the screw rod 42, the screw rod 42 is in threaded connection with the threaded sleeve 41, and the screw rod 42 is rotated to adjust the height of the back frame 30. Preferably, the screw rod 42 is provided with a handle, the screw rod 42 is rotated by the handle to change the vertical position of the shaft sleeve 41, so that the height of the back frame 30 is adjusted, and the verticality of the concrete permanent formwork 10 is adjusted by adjusting the heights of a plurality of back frames 30.
In the embodiment, the construction method of the concrete permanent formwork system is described by taking the construction of a common reinforced concrete wall as an example.
Before construction, preparation is carried out, and the structural size and the reinforcing bars of the concrete permanent formwork 10 are designed according to the structural size of a common reinforced concrete wall and the load required to be born by the concrete permanent formwork 10 during concrete pouring of the wall. The concrete permanent formwork 10 with the ribs 11 is made of ultra-high performance concrete, and the high-strength steel wires are arranged in the concrete permanent formwork 10 according to design requirements. And designing the back beam 20 and the back frame 30 according to the stress calculation, and manufacturing the back beam 20 and the back frame 30 according to the designed structural size. And then transporting the manufactured concrete permanent formwork 10, the back beam 20 and the back frame 30 to a site needing to be installed, and preparing for construction.
The construction method of the concrete permanent formwork system comprises the following steps:
firstly, the back beam 20 and the back frame 30 are sequentially fixed on the back surface of each concrete permanent formwork 10.
The back of the concrete permanent formwork 10 is placed on a flat ground upwards, the concrete permanent formwork penetrates through the back beam 20 by using a first connecting bolt 51 and then is fixed into the connecting blind hole 13, and then the connecting plate 32 of the back frame 30 is fixed on the back beam 20 by using a second connecting bolt 52.
Specifically, a plurality of first connecting bolts 51 are respectively screwed into the connecting blind holes 13 of the same connecting hole group, a back beam 20 is placed on the permanent concrete form 10, the first connecting bolts 51 are made to penetrate through the gaps of the back beam 20, then gaskets are sleeved on the first connecting bolts 51, and connecting nuts are screwed in, so that the connection between the back beam 20 and the permanent concrete form 10 is completed. In the same manner, the remaining back beam 20 is installed in connection with the concrete permanent formwork 10.
And then the back frame 30 is placed on the back beam 20 connected with the concrete permanent formwork 10, the connecting plate 32 on the back frame 30 is provided with a through hole, the through hole of the connecting plate 32 is aligned with the gap on the back beam 20, the second connecting bolt 52 penetrates through the through hole of the connecting plate 32 and the gap on the back beam 20, and the two ends of the second connecting bolt 52 are sleeved with gaskets and are screwed with nuts for fixing. In the same manner, the remaining back frames 30 are attached to the respective back frames 20.
And secondly, installing the reinforcing steel bars, and measuring and releasing the position of the concrete permanent formwork 10 to be installed after the reinforcing steel bars of the common reinforced concrete wall are installed and checked to be qualified. Each concrete permanent formwork 10 is hoisted to the position to be installed. Hoisting equipment is adopted to hoist the hoisting rings 23 on the back beam 20, and the concrete permanent formwork system is hoisted to a position needing to be installed, so that the concrete permanent formwork 10 is located at a position needing to be measured and released.
In the second step, after the concrete permanent formwork 10 is installed, the perpendicularity of the concrete permanent formwork 10 is adjusted through the adjusting mechanism 40. Specifically, the adjusting mechanism 40 includes a threaded sleeve 41 and a screw rod 42, the threaded sleeve 41 is fixed at the bottom of the support rod 31 of the back frame 30, a base 43 is arranged at the bottom of the screw rod 42, the screw rod 42 is in threaded connection with the threaded sleeve 41, and the screw rod 42 is rotated to adjust the height of the back frame 30. The vertical position of the threaded sleeve 41 is changed by rotating the screw rod 42 in the adjusting mechanism 40 of each back frame 30, so that the height of the support rod 31 in the back frame 30 is changed, and the perpendicularity of the concrete permanent formwork 10 is integrally adjusted by regulating and controlling the height of the support rod 31 in each back frame 30, so that the perpendicularity requirement of the common reinforced concrete wall is met.
And thirdly, repeating the first step and the second step to complete the installation of a set of concrete permanent formwork system at the opposite position of the other side of the common reinforced concrete wall. Two opposite permanent concrete formworks 10 are fixed by using split bolts, and a casting space is formed between the permanent concrete formworks 10. And (3) penetrating the split bolts through the connecting through holes 12 of the two permanent concrete formworks 10, sleeving gaskets on two ends of the split bolts, and fastening by using nuts.
And fourthly, repeating the steps one to three to finish the installation and the reinforcement of all the concrete permanent formwork systems on the two sides of the common reinforced concrete wall. And then pouring concrete slurry into the pouring space, removing the back beam 20 and the back frame 30 after the concrete strength reaches the standard, and cutting off the split bolts exposed out of the concrete permanent formwork 10. Preferably, the removal of the back beam 20 and the back frame 30 is performed after the strength of the concrete reaches 50% of its design strength. Firstly, the two lifting rings 23 of the back beam 20 are lifted by the lifting device, nuts at two ends of the split bolt are screwed out, the gasket is taken away, then the fixation of the first connecting bolt 51 is released, the connection between the back beam 20 and the concrete permanent formwork 10 is removed, then the back beam 20 and the back frame 30 are lifted away, finally the fixation of the second connecting bolt 52 is released, and the connection between the back beam 20 and the back frame 30 is removed. After all the back beams 20 and the back frame 30 are removed, the concrete permanent formwork 10 is still exposed at the two ends of the split bolts, and the split bolts exposed out of the concrete permanent formwork on the wall body are cut off.
While the preferred embodiments of the present invention have been described in detail, it is to be understood that the invention is not limited to the precise embodiments, and that various equivalent changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A concrete permanent formwork system, comprising:
the concrete permanent formwork (10) is characterized in that a plurality of ribs (11) which are longitudinally arranged are arranged on the inner side surface of the concrete permanent formwork (10), at least one threaded through hole (12) which can penetrate through the ribs (11) and the concrete permanent formwork (10) is formed in each rib (11), a plurality of connecting hole groups are arranged on the back surface of the concrete permanent formwork (10), and each connecting hole group comprises a plurality of connecting blind holes (13) which are longitudinally distributed;
the back beams (20) are connected with the connecting blind holes (13) of the concrete permanent formwork (10);
a plurality of back frames (30) for supporting the back beams (20), the back frames (30) being connected to the back beams (20).
2. A concrete permanent formwork system according to claim 1, characterized in that: back beam (20) include two parallel steel beam (21) that the interval set up, form the clearance between two steel beam (21), and the both ends and the middle part of two steel beam (21) are connected through connecting plate (22) respectively.
3. A concrete permanent formwork system according to claim 2, characterized in that: the back beam (20) is fixed to the back surface of the concrete permanent formwork (10) through a first connecting bolt (51), and the first bolt penetrates through the gap of the back beam (20) and then is in threaded connection with the connecting blind hole (13).
4. A concrete permanent formwork system according to claim 2, characterized in that: and a hanging ring (23) is arranged at the top of the back beam (20).
5. A concrete permanent formwork system according to claim 1, characterized in that: the back frame (30) comprises a supporting rod (31), a plurality of inclined supporting rods and a plurality of first connecting pieces (32), each first connecting piece (32) is connected with the corresponding back beam through a second connecting bolt (52), each first connecting piece (32) is connected with the supporting rod (31) through at least one inclined supporting rod, and the bottom of the supporting rod (31) is provided with an adjusting mechanism (40).
6. The construction method of the concrete permanent formwork system is characterized by comprising the following steps of:
firstly, fixing a back beam (20) and a back frame (30) on the back of each concrete permanent formwork (10) in sequence;
secondly, hoisting each concrete permanent formwork (10) to a position to be installed;
thirdly, fixing two opposite concrete permanent formworks (10) by using split bolts, and forming a pouring space between the concrete permanent formworks (10);
and fourthly, pouring concrete slurry into the pouring space, removing the back beam (20) and the back frame (30) after the concrete strength reaches the standard, and cutting off the split bolts exposed out of the concrete permanent formwork (10).
7. A concrete permanent formwork system according to claim 6, characterized in that: in the first step, the back of the concrete permanent formwork (10) is placed upwards and horizontally on a flat site, the first connecting bolt (51) penetrates through the back beam (20) and then is fixed into the connecting blind hole (13), and then the second connecting bolt (52) is used for fixing the first connecting piece (32) of the back frame (30) on the back beam (20).
8. A concrete permanent formwork system according to claim 6, characterized in that: in the second step, after the concrete permanent formwork (10) is installed, the perpendicularity of the concrete permanent formwork (10) is adjusted through the adjusting mechanism (40).
9. A concrete permanent formwork system according to claim 8, characterized in that: adjustment mechanism (40) are including swivel nut (41) and screw rod (42), bracing piece (31) bottom at back of the body frame (30) is fixed in swivel nut (41), the bottom of screw rod (42) is equipped with base (43), screw rod (42) and swivel nut (41) threaded connection rotate screw rod (42) and adjust the height of back of the body frame (30).
10. A concrete permanent formwork system according to claim 6, characterized in that: in the fourth step, after the concrete strength reaches 50% of the designed strength, the back beam (20) is firstly hung by using a hoisting device, the connection between the back beam (20) and the concrete permanent formwork (10) is removed, and then the back beam (20) and the back frame (30) are hoisted away.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010081782.1A CN111305455A (en) | 2020-02-06 | 2020-02-06 | Concrete permanent formwork system and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010081782.1A CN111305455A (en) | 2020-02-06 | 2020-02-06 | Concrete permanent formwork system and construction method thereof |
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| CN111305455A true CN111305455A (en) | 2020-06-19 |
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| CN202010081782.1A Pending CN111305455A (en) | 2020-02-06 | 2020-02-06 | Concrete permanent formwork system and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049218A (en) * | 2020-08-26 | 2020-12-08 | 中铁十局集团有限公司 | Municipal concrete drainage pipeline laying construction method |
| CN114622746A (en) * | 2020-12-14 | 2022-06-14 | 广东博智林机器人有限公司 | Integral bathroom prefabricated room |
-
2020
- 2020-02-06 CN CN202010081782.1A patent/CN111305455A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112049218A (en) * | 2020-08-26 | 2020-12-08 | 中铁十局集团有限公司 | Municipal concrete drainage pipeline laying construction method |
| CN114622746A (en) * | 2020-12-14 | 2022-06-14 | 广东博智林机器人有限公司 | Integral bathroom prefabricated room |
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