CN112497477A - Production equipment and production method for prestressed concrete steel bar truss precast slab - Google Patents
Production equipment and production method for prestressed concrete steel bar truss precast slab Download PDFInfo
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- CN112497477A CN112497477A CN202011500462.1A CN202011500462A CN112497477A CN 112497477 A CN112497477 A CN 112497477A CN 202011500462 A CN202011500462 A CN 202011500462A CN 112497477 A CN112497477 A CN 112497477A
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- prestressed
- fixedly connected
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- rib plate
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 97
- 239000010959 steel Substances 0.000 title claims abstract description 97
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 31
- 239000011150 reinforced concrete Substances 0.000 claims abstract 2
- 239000004567 concrete Substances 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000007788 roughening Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
-
- 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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
- B28B23/024—Supporting means
-
- 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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
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- 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
本发明提出了一种预应力混凝土钢筋桁架预制板生产设备和生产方法，该生产设备包括多个主体模块和两个横梁模块，相邻主体模块之间可拆卸连接，两个横梁模块分别位于多个主体模块两端，并与其端部固定连接；主体模块包括纵梁、系梁、底模和支座，两根纵梁沿水平方向平行设置在支座上，系梁固定连接在两根纵梁之间，底模位于系梁上方且与其固定连接；横梁模块包括C型钢梁和梳筋板，两个C型钢梁的腹板相对布置，且其两者之间具有一间隙，两个C型钢梁的翼板通过法兰与主体模块端部固定连接，梳筋板固设于C型钢梁外侧。本发明实现了多种规格的预应力混凝土钢筋桁架预制板生产，有效降低生产成本，提高构件质量。
The invention provides a production equipment and a production method for a prestressed concrete reinforced truss prefabricated panel. The production equipment includes a plurality of main modules and two beam modules, adjacent main modules are detachably connected, and the two beam modules are located in multiple Both ends of a main body module are fixedly connected to their ends; the main body module includes a longitudinal beam, a tie beam, a bottom mold and a support, the two longitudinal beams are arranged in parallel on the support along the horizontal direction, and the tie beam is fixedly connected to the two longitudinal beams. Between the beams, the bottom mold is located above the tie beam and is fixedly connected to it; the beam module includes a C-shaped steel beam and a rib plate, the webs of the two C-shaped steel beams are arranged opposite, and there is a gap between them, and the two The wing plates of each C-shaped steel beam are fixedly connected with the end of the main module through the flange, and the rib plate is fixed on the outside of the C-shaped steel beam. The invention realizes the production of prestressed concrete reinforced concrete truss prefabricated panels of various specifications, effectively reduces the production cost and improves the quality of the components.
Description
Technical Field
The invention relates to the technical field of prestressed concrete member production, in particular to production equipment and a production method of a prestressed concrete steel bar truss precast slab.
Background
The pretensioning method prestress technology is a technology for producing a prefabricated prestressed concrete member, and can effectively improve the applicable span of a prefabricated slab, reduce the thickness of a prefabricated bottom plate and improve the mechanical property of the prefabricated slab when being used for the steel bar truss concrete prefabricated slab.
The prestressed concrete member is produced by adopting a pre-tensioning method, wherein the prestressed steel wire is tensioned and anchored before concrete is poured, and the prestressed steel wire is tensioned after the concrete strength reaches the design requirement to form the prestressed concrete member. The stress control of the prestressed tendon is the key of the production of the pretensioned prestressed component, determines the quality of the prestressed component, and needs corresponding process flow to guarantee in the production process.
The steel die bed seat is mainly used for the factory prefabrication of pretensioning prestressed components, and can support tensioned prestressed tendons and serve as templates of the prefabricated components in the production process of the prefabricated components. Traditional steel die bed seat length is fixed, can't adjust according to actual demand, and is higher to the production place requirement, and prestressing force component manufacturing cost is great, can't satisfy the production needs of prestressed concrete steel bar truss prefabricated plate.
Disclosure of Invention
The invention aims to provide production equipment and a production method of a prestressed concrete steel bar truss precast slab, and solves the problems that the traditional steel die bed in the prior art is fixed in length, cannot be adjusted according to actual requirements, has high requirements on production sites, and has high production cost of prestressed members.
In order to solve the technical problems, the invention adopts the technical scheme that:
in a first aspect, the invention provides a prestressed concrete steel bar truss precast slab production device, which comprises a plurality of main body modules and two beam modules, wherein adjacent main body modules are detachably connected, and the two beam modules are respectively positioned at two ends of the plurality of main body modules and fixedly connected with the end parts of the main body modules; the main body module comprises longitudinal beams, a tie beam, a bottom die and a support, wherein the two longitudinal beams are arranged on the support in parallel along the horizontal direction, the tie beam is fixedly connected between the two longitudinal beams, and the bottom die is positioned above the tie beam and is fixedly connected with the tie beam; the beam module comprises C-shaped steel beams and a comb rib plate, webs of the two C-shaped steel beams are arranged oppositely, a gap is formed between the webs and the C-shaped steel beams, wing plates of the two C-shaped steel beams are fixedly connected with the end part of the main body module through flanges, the comb rib plate is fixedly arranged on the outer side of the C-shaped steel beams, a plurality of positioning holes are formed in the comb rib plate in a linear shape, and the positioning holes correspond to the gap.
As preferred scheme, still include prestressed wire, clamping piece anchor, end mould and side form quantity are a plurality of, two end mould and two combine into the rectangle framework through the magnetism mode between the side form, the rectangle framework is located the die block for concreting, the prestressed wire is worn to establish in the locating hole that is located the comb gusset plate in two crossbeam module outsides, and is in the prestressed wire end portion installs the clamping piece anchor.
Preferably, the support comprises a screw, a sleeve and a base, the bottom end of the sleeve is fixedly connected to the base, a threaded hole is formed in the sleeve, the lower portion of the screw is inserted into the threaded hole and is in threaded connection with the threaded hole, and the upper portion of the screw is fixedly connected with the longitudinal beam.
Preferably, the longitudinal beam is fixedly connected with a plurality of lifting rings, and the lifting rings are used for lifting the main body module.
As a preferred scheme, at least two straight holes are respectively formed in two ends of the comb rib plate, and the two straight holes are respectively and fixedly connected with wing plates of the two C-shaped steel beams through bolts.
In a second aspect, the invention provides a method for producing a prestressed concrete steel bar truss precast slab, which comprises the following steps:
1) preparation of production: determining the section diameter of a prestressed steel wire according to a prefabricated plate component design drawing, adjusting the installation height of a comb rib plate, completing vertical positioning of the prestressed steel wire, selecting a corresponding positioning hole, completing horizontal positioning of the prestressed steel wire, determining the positions of an end die and a side die according to the size of the prefabricated plate component, and combining the end die and the side die into a rectangular frame body in a magnetic absorption mode;
2) arranging prestressed steel wires: penetrating the prestressed steel wire through a selected comb rib plate positioning hole positioned at the outer side of the beam module, adjusting the length of the prestressed steel wire extending out of the comb rib plate, and installing a clip anchor after the tensioning and anchoring requirements are met;
3) tensioning: tensioning is carried out at a tensioning end through a jack, a tensioning mode is adopted one by one, the tensioning is symmetrically and alternately carried out from the middle to two sides, the prestressed steel wire is tensioned and straightened, the tensioning is controlled, and the elongation of the prestressed steel wire is checked;
4) binding steel bars: according to design requirements, placing a steel bar truss and longitudinal and transverse common steel bars into a rectangular frame body, and binding after the steel bar truss and the longitudinal and transverse common steel bars are in place;
5) pouring and maintaining concrete: pouring concrete into the rectangular frame body, vibrating to be dense, and laminating and maintaining after roughening treatment of the surface;
6) releasing the paper: starting releasing when the compressive strength of the concrete cube test block cured under the same condition reaches 75% of the designed strength;
7) demolding: and demolding after the sheet is released, and hoisting to a corresponding position for storage.
Preferably, in step 6), the sheet releasing includes: and cutting the prestressed steel wire by adopting a cutting tool, selecting a position between two adjacent end dies at the cutting position, symmetrically and alternately cutting from the middle to two sides, and cutting off redundant prestressed steel wires after the prestressed steel wires are tensioned.
Compared with the prior art, the invention has the beneficial effects that: the modular assembled steel die bed seat is stable in structure, easy to assemble and adjust, and matched with corresponding technological processes, production of prestressed concrete steel bar truss precast slabs of various specifications is achieved, production cost is effectively reduced, and component quality is improved.
Drawings
The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts. Wherein:
FIG. 1 is a schematic structural diagram of a prestressed concrete steel bar truss precast slab production device (with end molds and side molds removed) according to an embodiment of the present invention;
FIG. 2 is another schematic structural diagram of a prestressed concrete steel bar truss precast slab production facility according to an embodiment of the present invention;
FIG. 3 is a front view of the apparatus for manufacturing a precast slab of the prestressed concrete steel bar truss shown in FIG. 2;
FIG. 4 is a side view of the apparatus for manufacturing a precast slab of the prestressed concrete steel bar truss shown in FIG. 2;
FIG. 5 is a schematic structural view of a pre-fabricated slab production apparatus (with fittings removed) for a prestressed concrete steel bar truss according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a body module according to an embodiment of the present invention;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
FIG. 8 is a cross-sectional view taken along line B-B of FIG. 6;
FIG. 9 is a schematic structural diagram of a beam module according to an embodiment of the invention;
FIG. 10 is a cross-sectional view taken along line C-C of FIG. 9;
FIG. 11 is a schematic view of a connection structure of a main body module and a beam module according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a support according to an embodiment of the present invention;
fig. 13 is a flowchart of a method for producing a precast slab of a prestressed concrete steel bar truss according to an embodiment of the present invention.
Reference numbers in the figures: 100 main body modules, 200 cross beam modules, 1 longitudinal beam, 2 tie beams, 3 bottom dies, 4 supports, 401 bases, 402 sleeves, 403 screw rods, 5C-shaped steel beams, 6 comb rib plates, 7 prestressed steel wires, 8 clamping piece anchors, 9 end dies, 10 side dies, 11 lifting rings, 12 flanges, 13 positioning holes and 14 straight holes.
Detailed Description
It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.
An embodiment according to the invention is shown in connection with fig. 1 to 5. The invention provides a prestressed concrete steel bar truss precast slab production device which comprises a plurality of main body modules 100 and beam modules 200, wherein the adjacent main body modules 100 are detachably connected, and the two beam modules 200 are respectively positioned at two ends of the main body modules 100 and fixedly connected with the end parts of the main body modules 100. The detachable connection and the fixed connection can adopt high-strength bolt connection.
In an alternative embodiment, as shown in fig. 1, the apparatus includes three main body modules 100 and two beam modules 200, the three main body modules 100 are connected by high-strength bolts, and the two beam modules 200 are respectively located outside the head and the tail main body modules 100 and fixedly connected to the ends of the main body modules 100 by high-strength bolts.
In an alternative embodiment, as shown in fig. 2 to 5, the apparatus includes two main body modules 100 and two beam modules 200, the two main body modules 100 are connected by high-strength bolts, and the two beam modules 200 are respectively located outside the head and the tail main body modules 100 and fixedly connected to the ends of the main body modules 100 by high-strength bolts.
It can be understood that the number of the main body modules 100 can be adjusted according to actual production requirements to meet production requirements and reduce production cost.
As shown in fig. 6 to 8, the body module 100 includes longitudinal beams 1, tie beams 2, a bottom mold 3 and a support 4, the two longitudinal beams 1 are horizontally arranged in parallel on the support 4, the tie beams 2 are fixedly connected between the two longitudinal beams 1, the number of the tie beams 2 is multiple, the bottom mold 3 is located above the tie beams 2 and is fixedly connected with the tie beams 2, and the fixed connection manner may be a bolt connection or a welding connection.
Specifically, as shown in fig. 12, the support 4 includes a screw 403, a sleeve 402, and a base 401, a bottom end of the sleeve 402 is fixedly connected to the base 401, a threaded hole is formed in the sleeve 402, a lower portion of the screw 403 is inserted into the threaded hole and is in threaded connection with the threaded hole, and an upper portion of the screw 403 is fixedly connected to the longitudinal beam 1. By rotating the base 401, the amount of expansion and contraction of the screw 403 can be adjusted, thereby adjusting the height of the side member 1.
Further, a plurality of hanging rings 11 are fixedly connected to the longitudinal beam 1, and the hanging rings 11 are used for hoisting the main body module 100.
As shown in fig. 9 to 11, the beam module 200 includes C-shaped steel beams 5 and a comb plate 6, webs of the two C-shaped steel beams 5 are arranged opposite to each other with a gap therebetween, and flanges of the two C-shaped steel beams 5 are fixedly connected to ends of the longitudinal beams 1 through flanges 12. The comb rib plate 6 is fixedly arranged on the outer side of the C-shaped steel beam 5, a plurality of positioning holes 13 are formed in the comb rib plate 6 in a straight line shape, the positioning holes 13 correspond to the gaps, and preferably, the positioning holes 13 are located on the central horizontal plane of the gaps.
At least two straight holes 14 are respectively arranged at two ends of the comb rib plate 6, and the two straight holes 14 are respectively and fixedly connected with wing plates of the two C-shaped steel beams 5 through bolts. The design of the straight hole 14 is adopted, so that the vertical height of the comb rib plate 6 is convenient to adjust, and the prestressed steel wire 7 can conveniently penetrate through and be positioned.
Referring to fig. 2 again, the equipment further comprises a plurality of prestressed steel wires 7, clip anchors 8, end molds 9, side molds 10 and other accessories, the number of the end molds 9 and the number of the side molds 10 are multiple, the two end molds 9 and the two side molds 10 are combined into a rectangular frame body in a magnetic absorption mode, the rectangular frame body is located on the bottom mold 3 and used for pouring concrete, the prestressed steel wires 7 penetrate through positioning holes 13 of the comb rib plates 6 located on the outer sides of the two beam modules 200, and the clip anchors 8 are installed at the end portions of the prestressed steel wires 7.
As shown in fig. 13, the present invention also provides a method for producing a precast slab of a prestressed concrete steel bar truss, including:
1) preparation of production: according to a design drawing of a precast slab component, the diameter of the section of a prestressed steel wire 7 is determined, the installation height of a comb rib plate 6 is adjusted, the vertical positioning of the prestressed steel wire 7 is completed, a corresponding positioning hole 13 is selected, the horizontal positioning of the prestressed steel wire 7 is completed, the positions of an end die 9 and a side die 10 are determined according to the size of the precast slab component, and the rectangular frame is combined in a magnetic absorption mode.
2) Arranging the prestressed steel wires 7: and (3) penetrating the prestressed steel wire 7 through a positioning hole 13 of the comb rib plate 6 selected on the outer side of the beam module 200, adjusting the length of the prestressed steel wire 7 extending out of the comb rib plate 6, and installing a clip anchor 8 after the tensioning and anchoring requirements are met.
3) Tensioning: and (3) tensioning the tensioning end by a jack, symmetrically and alternately performing tensioning from the middle to two sides in a root-by-root tensioning mode, tensioning and straightening the prestressed steel wire 7, controlling tensioning, and checking the elongation of the prestressed steel wire 7. The jack is located a crossbeam module 200 outside, and the tensioning end of prestressing wire 7 is the one end that the jack was placed, and the prestressing wire 7 other end is the stiff end, and this jack adopts the jack of punching, and prestressing wire 7 passes and cooperates clamping piece anchor 8 to stretch-draw behind the jack.
4) Binding steel bars: according to design requirements, the steel bar truss and the longitudinal and transverse common steel bars are placed in the rectangular frame body and are bound after being in place.
5) Pouring and maintaining concrete: and pouring concrete into the rectangular frame body, vibrating to be dense, and laminating and maintaining after roughening treatment of the surface.
6) Releasing the paper: and (5) starting releasing the concrete cube test block after the compressive strength of the concrete cube test block cured under the same condition reaches 75% of the designed strength. Specifically, the sheet releasing step comprises the following steps: and cutting the prestressed steel wires 7 by using a cutting tool, selecting a position between two adjacent end dies 9 at the cutting position, symmetrically and alternately cutting from the middle to two sides, and cutting off redundant prestressed steel wires 7 after the prestressed steel wires 7 are tensioned.
7) Demolding: and demolding after the sheet is released, and hoisting to a corresponding position for storage.
In summary, the invention discloses a production device and a production method of a prestressed concrete steel bar truss precast slab, which has the beneficial effects that: the modular assembled steel die bed seat is stable in structure, easy to assemble and adjust, and matched with corresponding technological processes, production of prestressed concrete steel bar truss precast slabs of various specifications is achieved, production cost is effectively reduced, and component quality is improved.
The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011500462.1A CN112497477B (en) | 2020-12-18 | 2020-12-18 | Prestressed concrete steel bar truss prefabricated plate production equipment and production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011500462.1A CN112497477B (en) | 2020-12-18 | 2020-12-18 | Prestressed concrete steel bar truss prefabricated plate production equipment and production method |
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| CN112497477A true CN112497477A (en) | 2021-03-16 |
| CN112497477B CN112497477B (en) | 2025-01-10 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113290692A (en) * | 2021-07-02 | 2021-08-24 | 中交一公局第二工程有限公司 | Simple tensioning method for prefabricated part steel bar |
| CN115094771A (en) * | 2022-07-14 | 2022-09-23 | 甘肃交设智远实业有限公司 | A light prefabricated self-balancing pretensioning prestressing equipment |
| CN115416152A (en) * | 2022-07-01 | 2022-12-02 | 山东万斯达科技股份有限公司 | Rib distributing machine for prestressed building component mould table production line and rapid rib distributing process |
| CN118205083A (en) * | 2024-03-28 | 2024-06-18 | 中国铁工投资建设集团有限公司 | Assembled tensioning integrated die for prestress strip-shaped rib plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113290692A (en) * | 2021-07-02 | 2021-08-24 | 中交一公局第二工程有限公司 | Simple tensioning method for prefabricated part steel bar |
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| CN118205083A (en) * | 2024-03-28 | 2024-06-18 | 中国铁工投资建设集团有限公司 | Assembled tensioning integrated die for prestress strip-shaped rib plate |
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| Publication number | Publication date |
|---|---|
| CN112497477B (en) | 2025-01-10 |
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