CN114227897B - Prefabricating device and method for UHPC column formwork - Google Patents
Prefabricating device and method for UHPC column formwork Download PDFInfo
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- CN114227897B CN114227897B CN202111636676.6A CN202111636676A CN114227897B CN 114227897 B CN114227897 B CN 114227897B CN 202111636676 A CN202111636676 A CN 202111636676A CN 114227897 B CN114227897 B CN 114227897B
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims description 17
- 238000009415 formwork Methods 0.000 title claims description 13
- 239000004567 concrete Substances 0.000 claims abstract description 54
- 238000010276 construction Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 64
- 239000010959 steel Substances 0.000 claims description 64
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 6
- 239000003973 paint Substances 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 description 9
- 238000009417 prefabrication Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 2
- 239000011178 precast concrete Substances 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011372 high-strength concrete Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/14—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material
- B28B21/16—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means vibrating, e.g. the surface of the material one or more mould elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/10—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means
- B28B21/18—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements
- B28B21/20—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements using inflatable cores, e.g. having a frame inside the inflatable part of the core
- B28B21/205—Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using expansible or retractable mould or core elements using inflatable cores, e.g. having a frame inside the inflatable part of the core having a rigid frame inside the inflatable part of the core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/76—Moulds
- B28B21/82—Moulds built-up from several parts; Multiple moulds; Moulds with adjustable parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/86—Cores
- B28B21/88—Cores adjustable, collapsible or expansible
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/90—Methods or apparatus for demoulding or discharging after shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
- B28B7/0014—Fastening means for mould parts, e.g. for attaching mould walls on mould tables; Mould clamps
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
The invention relates to a prefabricating device for a UHPC column mould shell, which comprises an outer mould, an inner mould, a bottom mould, an operation platform, an escalator, a distributing device and a top cover plate, wherein the lower end surface of the bottom mould is fixedly arranged on the platform, the inner mould is arranged on the upper end surface of the bottom mould, the outer mould is arranged on the outer side of the inner mould, the bottom end surface of the outer mould is connected with the upper end surface of the bottom mould, the operation platform is arranged on the side surface of the upper part of the outer mould, the distributing device is arranged on the upper end surface of the outer mould, the top cover plate is arranged on the upper end surface of the distributing device, and constructors pass in and out of the operation platform through the escalator. According to the invention, the supporting device is arranged on the inner wall of the inner mould, so that the inner mould is separated from the inner wall of the concrete through shrinkage after the concrete pouring is completed, and the construction efficiency is improved; and the outer die is spliced through the eccentric quick locking device, so that the splicing precision and the use safety of the outer die are improved.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a prefabricating device and method for UHPC column mould shells.
Background
Along with the continuous development of urbanization and the continuous promotion of building industrialization, the assembly type construction technology is more and more widely applied, besides civil house buildings and traffic road engineering construction, large public buildings gradually start to adopt an assembly type construction mode, so that the construction progress is accelerated, and the environment-friendly development concept is met. However, the large size of the components is huge due to the characteristic of large space of the large public building, so that a series of problems are brought to transportation and lifting, and the whole prefabricated structure is changed to partial prefabrication, and the outer shell components of the ultra-high-strength concrete prefabricated structure are transported to site for installation and then internal concrete pouring.
Patent number CN108612189a discloses an assembled concrete frame structure with partially reinforced prefabricated UHPC shells, which comprises a column base annular prefabricated UHPC shell, a prefabricated concrete column, a beam end U-shaped UHPC shell and a prefabricated concrete superposed beam; the prefabricated concrete column is provided with an annular prefabricated UHPC shell at a column foot part; the column base annular prefabricated UHPC shell, the stirrups and the grouting sleeve are prefabricated into a whole; the beam end of the precast concrete superposed beam forms a U-shaped key slot through a U-shaped precast UHPC shell; the U-shaped UHPC shell at the beam end and the stirrup are prefabricated into a whole, and the lower part of the precast concrete superposed beam adopts small-specification high-strength steel bars; after the superposed beam is in place, binding longitudinal ribs on the upper part of the beam, and then pouring superposed layer concrete on site to form an integral structure.
Ultra-high performance concrete (UHPC for short) has excellent performances of Ultra-high strength, high toughness, high impermeability, high corrosion resistance and the like, is expected to become a basic material for building next-generation infrastructure, and the prior art adopts the method that the die is firstly installed at the installation position of the column die shell, and concrete casting is carried out, so that the concrete casting is limited by the installation position of the column die shell, the casting is inconvenient, and the building period is long.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a device and a method for prefabricating a UHPC column mould shell.
In order to achieve the above object, the present invention provides the following technical solutions:
the device comprises an outer die, an inner die, a bottom die, an operation platform, a moving staircase, a distributor and a top cover plate, wherein the lower end face of the bottom die is fixedly arranged on a construction platform, the inner die is arranged on the upper end face of the bottom die, the outer die is arranged on the outer side of the inner die, the bottom end face of the outer die is connected with the upper end face of the bottom die, the operation platform is arranged on the side face of the upper part of the outer die, constructors pass through the moving staircase to enter and exit the operation platform, the distributor is arranged on the end face of the upper part of the outer die, and the top cover plate is arranged on the upper end face of the distributor; the whole outer die is in a hollow cylinder shape, the outer die is formed by splicing two semicircular steel plates, and the spliced parts of the two semicircular steel plates of the outer die are fixedly connected through an eccentric quick locking device; the whole internal mold is in a hollow cylinder shape, the internal mold comprises two semicircular steel plates and arc plates, the number of the semicircular steel plates is two, the number of the arc plates is two, the side surfaces of the semicircular steel plates are respectively connected with the side surfaces of the arc plates, a plurality of internal mold supporting devices are arranged on the inner wall of the internal mold, and each internal mold supporting device comprises an internal mold adjustable door, a rotating shaft screw rod and a central lifting device; the center lifting device is arranged at the center of the inner mold, the side face of the center lifting device is connected with one end of the rotating shaft screw rod respectively, the other end of the rotating shaft screw rod is connected with one end of the inner mold adjustable door respectively, the other end of the inner mold adjustable door is connected with the inner wall of the arc plate respectively, and the side face of the inner mold adjustable door is connected with the inner wall of the inner mold through bolts.
The outer die and the bottom end face of the inner die are arranged on the end face of the upper part of the bottom die, the end face of the outer die, the end face of the inner die and the end face of the bottom die are in the same circle center, the distance between the outer die and the inner die is not more than 35mm, the height of the outer die and the height of the inner die are not less than 4500mm, the distance between the outer die and the inner die is used for casting high-strength UHPC concrete, and the strength grade of a post die shell after casting is not less than 100Mpa.
The outer die is processed through the high-precision numerical control machine tool, the outer wall of the outer die is sprayed with paint through shot blasting and sand blasting, the annular flange plates are connected with the outer wall of the outer die, a plurality of annular flange plates are connected to the outer wall of the outer die, the annular flange plates are perpendicular to the length direction of the outer die, the annular flange plates are installed in parallel, vertical rib plates are installed on the outer wall of the outer die, the vertical rib plates are distributed on the outer wall of the outer die at uniform intervals, and the vertical rib plates are parallel to the length direction of the outer die.
The end faces of the splicing parts of the two semicircular steel plates of the outer die are provided with through holes, the eccentric quick locking device is fixedly connected with the two semicircular steel plates of the outer die through the through holes of the splicing parts of the two semicircular steel plates of the outer die, the eccentric quick locking device is symmetrically distributed at the splicing parts of the outer die, rubber strips are arranged at the splicing parts of the outer die, and rubber strips are arranged at the joint of the outer die and the bottom die.
The center lifting device in the internal mold supporting device is connected through a center lifting frame, the center lifting frame is overlapped with a center connecting line of the end face of the internal mold, a square hollow pipe is arranged on the outer wall of the center lifting frame, the outer wall of the square hollow pipe is connected with the inner wall of the internal mold through a supporting rod, the center lifting frame moves up and down in the square hollow pipe, the center lifting frame drives the movable door of the internal mold to shrink through a rotating shaft screw rod when moving up and down in the square hollow pipe, a hanging table is arranged on the upper end face of the center lifting device, a through hole is formed in the hanging table, a rubber strip is arranged at the joint of a semicircular steel plate and an arc plate in the internal mold, and a rubber strip is arranged at the joint of the internal mold and the bottom mold.
The internal mold is processed through a high-precision numerical control machine tool, the annular flange plates are connected with the inner wall of the internal mold, a plurality of annular flange plates are connected to the inner wall of the internal mold, the annular flange plates are perpendicular to the length direction of the internal mold, the annular flange plates are installed in parallel, vertical rib plates are installed on the inner wall of the internal mold, the vertical rib plates are distributed on the inner wall of the internal mold at uniform intervals, and the vertical rib plates are parallel to the length direction of the internal mold.
The whole bottom die is cylindrical, the bottom die comprises a bottom die round table and a panel, the upper end face of the bottom die round table is welded and fixed with the bottom end face of the panel through a rib plate, and the panel is cylindrical.
A method for prefabricating a UHPC column formwork, the method comprising in particular the steps of:
preparing a UHPC column formwork prefabricating special device, wherein the device comprises an outer die, an inner die, a bottom die, an operating platform, a moving staircase, a distributing device and a top cover plate, wherein the lower end surface of the bottom die is fixedly arranged on the operating platform, the inner die is arranged on the upper end surface of the bottom die, the outer die is arranged on the outer side of the inner die, the bottom end surface of the outer die is connected with the upper end surface of the bottom die, the operating platform is arranged on the side surface of the upper part of the outer die, constructors pass through the moving staircase to enter and exit the operating platform, the distributing device is arranged on the upper end surface of the outer die, and the top cover plate is arranged on the upper end surface of the distributing device; the whole outer die is in a hollow cylinder shape, the outer die is formed by splicing two semicircular steel plates, and the spliced parts of the two semicircular steel plates of the outer die are fixedly connected through an eccentric quick locking device; the whole internal mold is in a hollow cylinder shape, the internal mold comprises two semicircular steel plates and arc plates, the number of the semicircular steel plates is two, the number of the arc plates is two, the side surfaces of the semicircular steel plates are respectively connected with the side surfaces of the arc plates, a plurality of internal mold supporting devices are arranged on the inner wall of the internal mold, and each internal mold supporting device comprises an internal mold adjustable door, a rotating shaft screw rod and a central lifting device; the center lifting device is arranged at the center of the inner mold, the side surface of the center lifting device is respectively connected with one end of the rotating shaft screw rod, the other end of the rotating shaft screw rod is respectively connected with one end of the inner mold adjustable door, the other end of the inner mold adjustable door is respectively connected with the inner wall of the arc plate, and the side surface of the inner mold adjustable door is connected with the inner wall of the inner mold through bolts;
secondly, fixing the bottom die on a construction platform, and smearing a release agent on a bottom die panel;
thirdly, after the bottom die is installed, firstly coating a release agent on the outer wall of the inner die, and after the coating is finished, hoisting the inner die to the bottom die through a hoisting machine, so that the bottom end surface of the inner die is fixedly connected with the upper end surface of the bottom die;
fourthly, after the inner die is installed, coating a release agent on the inner wall of the outer die, installing and fixing attached vibrating equipment on the outer wall of the outer die, symmetrically distributing the attached vibrating equipment on the inner wall of the outer die from bottom to top, respectively hoisting two semicircular steel plates of the outer die on a bottom die panel, respectively connecting the bottom end surfaces of the two semicircular steel plates of the outer die with the upper end surface of the bottom die, overlapping through holes at the spliced parts of the two semicircular steel plates of the outer die, and connecting and fixing the through eccentric quick locking devices;
fifthly, after the outer die is installed, embedding a film shell opening part in the upper part and the lower part between the inner die and the outer die respectively, and then performing splicing inspection on the outer die and the inner die;
sixthly, after splicing inspection of the outer mold and the inner mold is qualified, installing an operation platform at the upper part of the outer mold, installing a distributing device on the upper end surfaces of the outer mold and the inner mold through a moving staircase, and installing a top cover plate on the top end surface of the distributing device to enable the top of the inner mold to be in a closed state;
seventh, after the distributor and the top cover plate are installed, the constructor performs concrete pouring through the moving staircase in-out operation platform;
eighth, in the process of concrete pouring, gradually starting an attached vibrator on the outer wall of the outer mold along with the rise of the concrete pouring height, and simultaneously inserting two inserted vibrating bars into the interval between the outer mold and the inner mold to match with the attached vibrator for pouring and vibrating;
ninth, when concrete pouring is completed and the concrete strength is satisfied, removing an operation platform and a distributor at the upper part of the outer mold, removing a top cover plate at the upper end surface of the inner mold, enabling a crane to enable an inner mold movable door to respectively shrink downwards and inwards of the inner mold by driving a central lifting frame through lifting a lifting platform on a central lifting device at the top of the inner mold, enabling the inner mold movable door to drive an arc plate to move inwards of the inner mold so as to enable the diameter of the inner mold to be reduced, enabling the inner mold to be separated from the inner wall of the poured concrete, opening an eccentric quick locking device after the inner mold is removed, enabling two semicircular steel plates of the outer mold to be separated from the outer wall of the poured concrete respectively, and completing demolding work of a column mold shell;
and tenth, after the demolding of the column mould shell is completed, the column mould shell is hung at a construction position through a mould shell opening on the column mould shell, and then pouring of concrete in the column mould shell is carried out.
When the inner mold in the third step is arranged on the end surface of the upper part of the bottom mold, the adjusting basket and the inner mold movable door in the supporting device on the inner wall of the inner mold are vertical to the inner wall of the inner mold, so that the diameter of the inner wall of the inner mold is supported to the maximum.
The whole distributing device in the seventh step is in an open funnel shape, the distributing device is composed of two annular parts, the two annular parts are respectively arranged on the top end face of the inner die and the top end face of the outer die, the two annular parts are connected through triangular plates, the triangular plates are uniformly distributed on the annular parts, and through holes are formed in the triangular plates.
Based on the scheme, the device and the method of the invention have the following positive and beneficial effects through practical application:
1. according to the invention, the supporting device is arranged on the inner wall of the inner mould, after concrete pouring is completed, the inner mould is contracted and separated from the inner wall of the concrete by lifting the central lifting device, so that the inner mould is convenient to dismantle, and the construction efficiency is improved.
2. According to the invention, the two semicircular steel plates of the outer mold are fixedly connected through the eccentric quick locking device, so that the safety of concrete pouring is improved, the outer mold has an explosion-proof function, and meanwhile, the eccentric quick locking device improves the installation efficiency of the outer mold.
3. The distributor is arranged on the upper end surfaces of the outer die and the inner die, so that concrete pouring is facilitated, the concrete pouring speed is improved, meanwhile, the attached vibrator and the inserted vibrator are adopted for concrete pouring and vibrating, and the quality of the molded surface after concrete pouring is improved.
Drawings
Fig. 1 is an overall assembly view of a column shell prefabrication apparatus for use in a UHPC column shell prefabrication apparatus according to the present invention.
Fig. 2 is a cross-sectional view of a column shell prefabrication apparatus for use in a UHPC column shell prefabrication apparatus according to the present invention.
Fig. 3 is an external top view of an apparatus for prefabricating a UHPC column shell according to the present invention.
Fig. 4 is a top view of an internal mold used in the UHPC column shell prefabrication apparatus of the present invention.
Fig. 5 is a cross-sectional view of a column mold for use in a UHPC column mold prefabrication apparatus according to the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention is described below by way of specific examples shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1, the invention is used as a prefabricating device for a UHPC column mould shell, the device comprises an outer mould 1, an inner mould 13, a bottom mould 14, an operation platform 2, a moving staircase 4, a distributing device 8 and a top cover plate 3, wherein the lower end surface of the bottom mould 14 is fixedly arranged on a construction platform, the inner mould 13 is arranged on the upper end surface of the bottom mould 14, the outer mould 1 is arranged outside the inner mould 13, the bottom end surface of the outer mould 1 is connected with the upper end surface of the bottom mould 14, the operation platform 2 is arranged on the upper side surface of the outer mould 1, constructors enter and exit the operation platform 2 through the moving staircase 4, the distributing device 8 is arranged on the upper end surface of the outer mould 1, and the top cover plate 3 is arranged on the upper end surface of the distributing device 8; the whole outer die 1 is in a hollow cylinder shape, the outer die 1 is formed by splicing two semicircular steel plates, and the spliced parts of the two semicircular steel plates of the outer die 1 are fixedly connected through an eccentric quick locking device 5; the whole internal mold 13 is in a hollow cylinder shape, the internal mold 13 comprises two semicircular steel plates and arc plates 17, the number of the semicircular steel plates is two, the number of the arc plates 17 is two, the side surfaces of the semicircular steel plates are respectively connected with the side surfaces of the arc plates 17, a plurality of internal mold supporting devices are arranged on the inner wall of the internal mold 13, and each internal mold supporting device comprises an internal mold movable door 12, a rotating shaft screw 11 and a central lifting device 10; the center lifting device 10 is arranged at the center of the inner mold 13, the side face of the center lifting device 10 is connected with one end of the rotating shaft screw rod 11 respectively, the other end of the rotating shaft screw rod 11 is connected with one end of the inner mold adjustable door 12 respectively, the other end of the inner mold adjustable door 12 is connected with the inner wall of the arc plate 17 respectively, and the side face of the inner mold adjustable door 12 is connected with the inner wall of the inner mold 13 through bolts.
The end faces of the outer die 1 and the bottom end face of the inner die 13 are arranged on the upper end face of the bottom die 14, the end faces of the outer die 1, the end faces of the inner die 13 and the end face of the bottom die 14 are concentric, the distance between the outer die 1 and the inner die 13 is not more than 35mm, the height of the outer die 1 and the inner die 13 is not less than 4500mm, the distance between the outer die 1 and the inner die 13 is used for casting high-strength UHPC concrete, and the strength grade of a post die shell 19 after casting is not less than 100Mpa; the outer die 1 and the inner die 13 are concentric with the bottom die 14, so that the stability of the column die shell 19 in the installation process is improved, and the safety of subsequent concrete pouring is improved.
Above-mentioned external mold 1 is processed through high accuracy digit control machine tool, external mold 1 outer wall is through throwing the ball sand blasting paint, annular flange board 6 with external mold 1 outer wall connection, connect a plurality of annular flange boards 6 on the external mold 1 outer wall, annular flange board 6 with external mold 1 length direction is perpendicular, annular flange board 6 parallel mount, erect gusset 7 and install on the external mold 1 outer wall, erect gusset 7 with even interval distribution is in on the external mold 1 outer wall, erect gusset 7 with external mold 1 length direction is parallel, external mold 1 is 6mm steel sheet system, annular flange board 6 adopts thickness to be 12mm steel sheet, wide to be 120mm steel sheet system, erects gusset 7 and adopts 10mm channel-section steel, annular flange board 6 and erects gusset 7 and has improved the bulk strength of external mold, has improved follow-up concrete placement's security.
The end surfaces of the spliced positions of the two semicircular steel plates of the outer die 1 are provided with through holes, the eccentric quick locking device 5 is fixedly connected with the two semicircular steel plates of the outer die 1 through the through holes of the spliced positions of the two semicircular steel plates of the outer die 1, the eccentric quick locking device 5 is symmetrically distributed at the spliced positions of the outer die 1, and rubber strips are arranged at the spliced positions of the outer die 1; the rubber strip that outer mould 1 splice set up improves the leakproofness of outer mould 1 splice, prevents the thick liquid that leaks when concreting.
The center lifting device 10 in the supporting device of the inner mold 13 is connected through a center lifting frame 101, the center lifting frame 101 is overlapped with a center connecting line of the end face of the inner mold 13, a square hollow pipe 16 is arranged on the outer wall of the center lifting frame 101, the outer wall of the square hollow pipe 16 is connected with the inner wall of the inner mold 13 through a supporting rod 15, the center lifting frame 101 moves up and down in the square hollow pipe 16, the center lifting frame 101 drives the movable door 12 of the inner mold to shrink through a rotating shaft screw rod 11 when moving up and down in the square hollow pipe 16, a hanging table 9 is arranged on the upper end face of the center lifting device 10 arranged on the uppermost layer of the inner wall of the inner mold 13, a through hole is formed in the hanging table 9, a rubber strip is arranged at the joint of a semicircular steel plate in the inner mold 13 and an arc plate 17, and a rubber strip is arranged at the joint of the inner mold 13 and the bottom mold 14; the rubber strip that centre form 13 splice set up has improved the leakproofness of centre form 13 splice, prevents the thick liquid leakage when concreting.
The inner mold 13 is processed through a high-precision numerical control machine tool, the annular flange plates are connected with the inner wall of the inner mold 13, a plurality of annular flange plates are connected to the inner wall of the inner mold 13, the annular flange plates are perpendicular to the length direction of the inner mold 13, the annular flange plates are installed in parallel, vertical rib plates are installed on the inner wall of the inner mold 13, the vertical rib plates are distributed on the inner wall of the inner mold 13 at uniform intervals, and the vertical rib plates are parallel to the length direction of the inner mold 13; the annular flange plates and the vertical rib plates improve the integral strength of the inner die 13 and the safety of subsequent concrete pouring.
The bottom die 14 is in a cylindrical shape as a whole, the bottom die 14 comprises a bottom die circular table and a panel, the upper end surface of the bottom die 14 circular table is welded and fixed with the bottom end surface of the panel through a rib plate, and the panel is in a cylindrical shape; the diameter of the bottom die 14 is 1800mm, the height is 170mm, the panel adopts a steel plate with the thickness of 20mm, the rib plate is a steel plate with the thickness of 1200mm, and the steel plate is arranged on the end face of the upper part of the bottom die 14, so that the bearing performance of the bottom die 14 is improved, and the concrete pouring safety is improved.
The invention also provides a method for prefabricating the UHPC column mould shell, which specifically comprises the following steps:
preparing a UHPC column formwork prefabricating special device, wherein the device comprises an outer die 1, an inner die 13, a bottom die 14, an operation platform 2, a movable staircase 4, a distributing device 8 and a top cover plate 3, wherein the lower end surface of the bottom die 14 is fixedly arranged on a construction platform, the inner die 13 is arranged on the upper end surface of the bottom die 14, the outer die 1 is arranged outside the inner die 13, the bottom end surface of the outer die 1 is connected with the upper end surface of the bottom die 14, the operation platform 2 is arranged on the upper side surface of the outer die 1, constructors enter and exit the operation platform 2 through the movable staircase 4, the distributing device 8 is arranged on the upper end surface of the outer die 1, and the top cover plate 3 is arranged on the upper end surface of the distributing device 8; the whole outer die 1 is in a hollow cylinder shape, the outer die 1 is formed by splicing two semicircular steel plates, and the spliced parts of the two semicircular steel plates of the outer die 1 are fixedly connected through an eccentric quick locking device 5; the whole internal mold 13 is in a hollow cylinder shape, the internal mold 13 comprises two semicircular steel plates and arc plates 17, the number of the semicircular steel plates is two, the number of the arc plates 17 is two, the side surfaces of the semicircular steel plates are respectively connected with the side surfaces of the arc plates 17, a plurality of internal mold supporting devices are arranged on the inner wall of the internal mold 13, and each internal mold supporting device comprises an internal mold movable door 12, a rotating shaft screw 11 and a central lifting device 10; the center lifting device 10 is arranged at the center of the inner mold 13, the side surface of the center lifting device 10 is respectively connected with one end of the rotating shaft screw rod 11, the other end of the rotating shaft screw rod 11 is respectively connected with one end of the inner mold adjustable door 12, the other end of the inner mold adjustable door 12 is respectively connected with the inner wall of the arc plate 17, and the side surface of the inner mold adjustable door 12 is connected with the inner wall of the inner mold 13 through bolts;
secondly, fixing the bottom die 14 on a platform, and smearing a release agent on the upper end surface of the bottom die 14; the release agent is convenient for separating the column mould shell 19 from the bottom mould 14 after the concrete pouring is completed;
thirdly, after the bottom die 14 is installed, firstly coating a release agent on the inner wall of the inner die 13, and then hoisting the inner die 13 to the bottom die 14 through a crane after coating, so that the bottom end surface of the inner die 13 is fixedly connected with the upper end surface of the bottom die 14; the release agent is convenient for separating the column mould shell 19 from the inner 13 mould after the concrete pouring is finished;
fourthly, after the inner mold 13 is installed, coating a release agent on the inner wall of the outer mold 1, installing and fixing attached vibrating equipment on the inner wall of the outer mold 1, symmetrically distributing the attached vibrating equipment on the outer wall of the outer mold 1 from bottom to top, respectively hoisting two semicircular steel plates of the outer mold 1 on a panel of the bottom mold 14, respectively connecting the bottom end surfaces of the two semicircular steel plates of the outer mold 1 with the upper end surface of the bottom mold 14, overlapping through holes at the joint of the two semicircular steel plates of the outer mold 1 and connecting and fixing the through holes through the eccentric quick locking device 5; the release agent is convenient for separating the column mould shell 19 from the outer mould 1 after the concrete pouring is completed;
fifthly, after the outer die 1 is installed, embedding a film shell open pore piece in the upper part and the lower part between the inner die 13 and the outer die 1 respectively, and then performing splicing inspection on the outer die 1 and the inner die 13;
sixthly, after the splicing inspection of the outer die 1 and the inner die 13 is qualified, installing an operation platform 2 at the upper part of the outer die 1, enabling constructors to enter and exit the operation platform 2 through a moving staircase 4, installing a distributing device 8 on the upper end surfaces of the outer die 1 and the inner die 13, and installing a top cover plate 3 on the top end surface of the distributing device 8 to enable the top of the inner die 13 to be in a closed state;
seventh, after the distributor 8 and the top cover plate 3 are installed, a constructor performs concrete pouring by moving the escalator 4 to enter and exit the operation platform 2;
eighth, in the process of concrete pouring, gradually starting an attached vibrator on the outer wall of the outer mold 1 along with the rise of the concrete pouring height, and simultaneously inserting two inserted vibrating bars into the interval between the outer mold 1 and the inner mold 13 to match with the attached vibrator for pouring and vibrating;
ninth, when concrete pouring is completed and the concrete strength is satisfied, removing the operation platform 2 and the distributor 8 at the upper part of the outer mold 1, removing the top cover plate 3 at the upper end surface of the inner mold, enabling the crane to separate two semicircular steel plates of the outer mold 1 from the outer wall of the poured concrete by lifting the lifting table 9 on the center lifting device 10 at the top of the inner mold 13, enabling the movable door 12 of the inner mold to respectively shrink downwards and inwards towards the inner mold 13 by driving the center lifting frame 101, enabling the movable door 12 of the inner mold to drive the arc plate 17 to move inwards towards the inner mold 13, enabling the diameter of the inner mold 13 to be smaller, enabling the inner mold 13 to separate from the inner wall of the poured concrete, opening the eccentric quick locking device 5 after the inner mold 13 is removed, and enabling the two semicircular steel plates of the outer mold 1 to separate from the outer wall of the poured concrete to complete demoulding of the column mold 19;
tenth, after the demolding of the column formwork 19 is completed, the column formwork 19 is hoisted at the construction position through the formwork opening 18 on the column formwork 19, and then the concrete in the column formwork 19 is poured.
When the inner mold 13 in the third step is mounted on the upper end surface of the bottom mold 14, the rotating shaft screw 11 and the inner mold movable door 12 in the supporting device on the inner wall of the inner mold 13 are vertical to the inner wall of the arc plate 17, so that the diameter of the inner wall of the inner mold 13 is supported to the maximum; the diameter of the inner mold 13 is in the maximum state, so that the interval between the inner mold 13 and the outer mold 1 meets the casting requirement, the side surface of the inner mold 13 is in the closed state, slurry leakage during concrete casting is avoided, and the mounting stability of the inner mold 13 is improved; the connecting distance between the internal mold adjustable door 12 and the central lifting device 10 can be flexibly adjusted by the rotating shaft screw 11, so that the supporting strength of the internal mold adjustable door 12 is ensured.
The whole hopper 8 in the seventh step is open funnel shape, the hopper 8 comprises two annular parts, the two annular parts are respectively installed on the top end face of the inner die 13 and the top end face of the outer die 1, the two annular parts are connected through triangular plates, the triangular plates are uniformly distributed on the annular parts, through holes are formed in the triangular plates, and triangular plate round holes in the hopper 8 facilitate the installation and the disassembly of the hopper 8, and meanwhile the whole strength of the hopper 8 is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that; modifications may be made to the specific embodiments of the invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (7)
1. The device is used for prefabricating a UHPC column mold shell and is characterized by comprising an outer mold (1), an inner mold (13), a bottom mold (14), an operation platform (2), a moving staircase (4), a distributing device (8) and a top cover plate (3), wherein the lower end surface of the bottom mold (14) is fixedly arranged on a construction platform, the inner mold (13) is arranged on the upper end surface of the bottom mold (14), the outer mold is arranged on the outer side of the inner mold (13), the bottom end surface of the outer mold (1) is connected with the upper end surface of the bottom mold (14), the operation platform (2) is arranged on the upper side surface of the outer mold (1), constructors enter and exit the operation platform (2) through the moving staircase (4), the distributing device (8) is arranged on the upper end surface of the outer mold (1), and the top cover plate (3) is arranged on the upper end surface of the distributing device;
the whole distributing device (8) is in an open funnel shape, the distributing device (8) is composed of two annular parts, the two annular parts are respectively arranged on the top end face of the inner die (13) and the top end face of the outer die (1), the two annular parts are connected through triangular plates, the triangular plates are uniformly distributed on the annular parts, and through holes are formed in the triangular plates; the whole outer die (1) is in a hollow cylinder shape, the outer die (1) is formed by splicing two semicircular steel plates, and the spliced parts of the two semicircular steel plates of the outer die (1) are fixedly connected through an eccentric quick locking device (5); the whole internal mold (13) is in a hollow cylinder shape, the internal mold (13) comprises two semicircular steel plates and two arc plates (17), the arc plates (17) are two, the side surfaces of the semicircular steel plates are respectively connected with the side surfaces of the arc plates (17), and a plurality of internal mold supporting devices are arranged on the inner wall of the internal mold (13);
the internal mold supporting device comprises an internal mold movable door (12), a rotating shaft screw (11) and a central lifting device (10); the center lifting device (10) is arranged at the center of the inner mold (13), the side surface of the center lifting device (10) is respectively connected with one end of the rotating shaft screw rod (11), the other end of the rotating shaft screw rod (11) is respectively connected with one end of the inner mold adjustable door (12), the other end of the inner mold adjustable door (12) is respectively connected with the inner wall of the arc-shaped plate (17), and the side surface of the inner mold adjustable door (12) is connected with the inner wall of the inner mold (13) through bolts;
the bottom end surfaces of the outer die (1) and the inner die (13) are arranged on the upper end surface of the bottom die (14), the end surfaces of the outer die (1) and the inner die (13) and the end surface of the bottom die (14) are in the same circle center, the distance between the outer die (1) and the inner die (13) is not more than 35mm, the height of the outer die (1) and the inner die (13) is not less than 4500mm, the distance between the outer die (1) and the inner die (13) is used for pouring high-strength UHPC concrete, and the strength grade of a post die shell (19) after pouring is not less than 100Mpa;
center in the centre supporting device is carried and is drawn device (10) and is connected through center hoisting frame (101), center hoisting frame (101) with centre connecting wire coincidence of centre form (13) terminal surface, square hollow tube (16) are installed to centre hoisting frame (101) outer wall, square hollow tube (16) outer wall with centre form (13) inner wall passes through bracing piece (15) and is connected, center hoisting frame (101) are in the internal vertical movement of square hollow tube (16), center hoisting frame (101) are in when moving up and down in square hollow tube (16) drive centre form adjustable door (12) shrink through pivot screw rod (11), centre hoisting device (10) upper portion terminal surface installation hanging platform (9) of centre form (13) inner wall upper strata are installed, there is the through-hole on hanging platform (9), semicircular steel sheet in centre form (13) and arc (17) concatenation department are provided with the rubber strip, centre form (13) with bottom die (14) junction is provided with the rubber strip.
2. The device for prefabricating the UHPC column mould shell according to claim 1, wherein the outer mould (1) is processed through a high-precision numerical control machine tool, the outer wall of the outer mould (1) is sprayed with paint through shot blasting, a plurality of annular flange plates (6) are connected to the outer wall of the outer mould (1), the annular flange plates (6) are perpendicular to the length direction of the outer mould (1), the annular flange plates (6) are installed in parallel, vertical rib plates (7) are installed on the outer wall of the outer mould (1), the vertical rib plates (7) are distributed on the outer wall of the outer mould (1) at uniform intervals, and the vertical rib plates (7) are parallel to the length direction of the outer mould (1).
3. The prefabricating device for the UHPC column shells according to claim 1, wherein through holes are formed in the end faces of the spliced positions of the two semicircular steel plates of the outer mold (1), the eccentric quick locking device (5) is fixedly connected with the two semicircular steel plates of the outer mold (1) through the through holes of the spliced positions of the two semicircular steel plates of the outer mold (1), the eccentric quick locking device (5) is symmetrically distributed at the spliced positions of the outer mold (1), rubber strips are arranged at the spliced positions of the outer mold (1), and rubber strips are arranged at the joint of the outer mold (1) and the bottom mold (14).
4. The device for prefabricating the UHPC column mould shell according to claim 1, wherein the inner mould (13) is processed by a high-precision numerical control machine tool, a circumferential flange plate is connected with the inner wall of the inner mould (13), a plurality of circumferential flange plates are connected to the inner wall of the inner mould (13), the circumferential flange plates are perpendicular to the length direction of the inner mould (13), the circumferential flange plates are installed in parallel, vertical rib plates are installed on the inner wall of the inner mould (13), the vertical rib plates are distributed on the inner wall of the inner mould (13) at uniform intervals, and the vertical rib plates are parallel to the length direction of the inner mould (13).
5. The device for prefabricating the column die shells of the UHPC according to claim 1, wherein the bottom die (14) is integrally cylindrical, the bottom die (14) comprises a bottom die round table and a panel, the upper end surface of the bottom die (14) round table is welded and fixed with the bottom end surface of the panel through a rib plate, and the panel is cylindrical.
6. A method for prefabricating a UHPC column formwork, characterized in that the method comprises in particular the steps of:
the method comprises the steps of preparing a UHPC column formwork prefabricating special device, wherein the device comprises an outer die (1), an inner die (13), a bottom die (14), an operation platform (2), a moving staircase (4), a distributing device (8) and a top cover plate (3), the lower end face of the bottom die (14) is fixedly arranged on a construction platform, the inner die (13) is arranged on the upper end face of the bottom die (14), the outer die is arranged on the outer side of the inner die (13), the bottom end face of the outer die (1) is connected with the upper end face of the bottom die (14), the operation platform (2) is arranged on the upper side face of the outer die (1), constructors enter and exit the operation platform (2) through the moving staircase (4), the distributing device (8) is arranged on the upper end face of the outer die (1), and the top cover plate (3) is arranged on the upper end face of the distributing device (8). The whole outer die (1) is in a hollow cylinder shape, the outer die (1) is formed by splicing two semicircular steel plates, and the spliced parts of the two semicircular steel plates of the outer die (1) are fixedly connected through an eccentric quick locking device (5); the internal mold (13) is integrally hollow and cylindrical, the internal mold (13) comprises semicircular steel plates and arc plates (17), the number of the semicircular steel plates is two, the number of the arc plates (17) is two, the side surfaces of the semicircular steel plates are respectively connected with the side surfaces of the arc plates (17), a plurality of internal mold supporting devices are arranged on the inner wall of the internal mold (13), and each internal mold supporting device comprises an internal mold adjustable door (12), a rotating shaft screw rod (11) and a central lifting device (10); the center lifting device (10) is arranged at the center of the inner mold (13), the side surface of the center lifting device (10) is respectively connected with one end of the rotating shaft screw rod (11), the other end of the rotating shaft screw rod (11) is respectively connected with one end of the inner mold adjustable door (12), the other end of the inner mold adjustable door (12) is respectively connected with the inner wall of the arc-shaped plate (17), and the side surface of the inner mold adjustable door (12) is connected with the inner wall of the inner mold (13) through bolts;
secondly, fixing the bottom die (14) on a construction platform, and smearing a release agent on a panel of the bottom die (14);
thirdly, after the bottom die (14) is installed, firstly coating a release agent on the outer wall of the inner die (13), and after the coating is finished, hoisting the inner die (13) to the bottom die (14) through a hoisting machine, so that the bottom end surface of the inner die (13) is fixedly connected with the upper end surface of the bottom die (14);
fourthly, after the installation of the inner mold (13) is completed, smearing a release agent on the inner wall of the outer mold (1), installing and fixing attached vibrating equipment on the inner wall of the outer mold (1), symmetrically distributing the attached vibrating equipment on the outer wall of the outer mold (1) from bottom to top, and finally respectively hoisting two semicircular steel plates of the outer mold (1) on a panel of the bottom mold (14), wherein the bottom end surfaces of the two semicircular steel plates of the outer mold (1) are connected with the upper end surface of the bottom mold (14), so that through holes at the spliced parts of the two semicircular steel plates of the outer mold (1) are overlapped and are connected and fixed through an eccentric quick locking device (5);
fifthly, after the outer die (1) is installed, respectively embedding a die shell opening part at the upper part and the lower part between the inner die (13) and the outer die (1), and then performing splicing inspection on the outer die (1) and the inner die (13);
sixthly, after the splicing inspection of the outer die (1) and the inner die (13) is qualified, an operation platform (2) is installed at the upper part of the outer die (1), constructors enter and exit the operation platform (2) through a moving staircase (4), a distributing device (8) is installed on the upper end surfaces of the outer die (1) and the inner die (13), and a top cover plate (3) is installed on the top end surface of the distributing device (8), so that the top of the inner die (13) is in a closed state; the whole of the distributing device (8) is in an open funnel shape, the distributing device (8) consists of two annular parts, the two annular parts are respectively arranged on the top end face of the inner die (13) and the top end face of the outer die (1), the two annular parts are connected through triangular plates, the triangular plates are uniformly distributed on the annular parts, and through holes are formed in the triangular plates;
seventh, after the distributor (8) and the top cover plate (3) are installed, constructors go in and out of the operation platform (2) through the movable staircase (4) to perform concrete pouring;
eighth, in the process of concrete pouring, gradually opening an attached vibrator on the outer wall of the outer mold (1) along with the rise of the concrete pouring height, and simultaneously inserting two inserted vibrator rods into the interval between the outer mold (1) and the inner mold (13) to match with the attached vibrator for pouring and vibrating;
ninth, when concrete pouring is completed and the concrete strength is satisfied, demolding is performed, firstly, removing an operation platform (2) and a distributor (8) at the upper part of an outer mold (1), then removing a top cover plate (3) at the upper end surface of an inner mold (13), enabling a crane to separate two semicircular steel plates of the outer mold (1) from the outer wall of the poured concrete by lifting a lifting table (9) on a central lifting device (10) at the top of the inner mold (13), enabling the inner mold movable door (12) to shrink downwards and inwards of the inner mold (13) respectively through driving a central lifting frame (101), enabling the inner mold movable door (12) to drive an arc plate (17) to move inwards of the inner mold (13), enabling the diameter of the inner mold (13) to be reduced, enabling the inner mold (13) to separate from the inner wall of the poured concrete, and after the inner mold (13) is removed, opening an eccentric quick locking device (5), and then enabling two semicircular steel plates of the outer mold (1) to separate from the outer wall of the poured concrete to finish demolding work of a column mold (19);
tenth, after demoulding the column mould shell (19) is completed, hoisting the column mould shell (19) at a construction position through mould shell openings (18) on the column mould shell (19), and pouring concrete in the column mould shell (19).
7. A method for prefabricating a UHPC column formwork according to claim 6, wherein the inner wall diameter of the inner mould (13) is supported to a maximum by means of spindle screws (11) and inner mould sectional doors (12) in support means provided on the inner wall of the inner mould (13) when the inner mould (13) in the third step is mounted on the upper end face of the bottom mould (14).
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| CN114683395B (en) * | 2022-04-18 | 2023-10-03 | 兰州理工大学 | Modularized circular PC well chamber prefabricated formwork and construction assembling and dismantling method |
| CN115229962B (en) * | 2022-08-05 | 2023-10-27 | 湖南创清环境技术有限公司 | Demoulding and forming method for concrete prefabricated part |
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