CN112140290B - Pouring method for prefabricated bridge deck - Google Patents
Pouring method for prefabricated bridge deck Download PDFInfo
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- CN112140290B CN112140290B CN202010967619.5A CN202010967619A CN112140290B CN 112140290 B CN112140290 B CN 112140290B CN 202010967619 A CN202010967619 A CN 202010967619A CN 112140290 B CN112140290 B CN 112140290B
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- supporting
- bridge deck
- prefabricated bridge
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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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0002—Auxiliary parts or elements of the mould
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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
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
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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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
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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
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The embodiment of the invention discloses a pouring method of a prefabricated bridge deck, which comprises the following steps: the supporting device is used for supporting a steel formwork structure for pouring the prefabricated bridge deck slab, and the steel formwork structure comprises an inner formwork and side formworks arranged on two sides of the inner formwork; the support device includes: the first supporting part is of a concrete structure, has the length of the prefabricated bridge deck and is used for supporting the inner formwork; the second supporting parts are respectively arranged on two opposite sides of the first supporting part, are used for supporting the side templates on two sides of the inner template, and are arranged at intervals along the length direction of the first supporting part; each of the second supporting portions includes: at least one telescoping member for supporting beneath the sideform. The embodiment of the invention effectively realizes that the prefabricated bridge deck steel mould can fall down along with the self weight, saves the processes of manual operation, form removal and the like, and improves the efficiency of the form removal.
Description
Technical Field
The invention relates to the technical field of road and bridge construction, in particular to a pouring method for a prefabricated bridge deck.
Background
With the rapid development of the economy of China, the bridge construction business of China is also rapidly developed. In the bridge construction process, the prefabrication and assembly construction technology can obviously shorten the construction period and reduce the construction road occupying time, and meanwhile, the bridge construction technology has the advantages of high construction quality, low safety risk, environmental protection and the like. Therefore, the prefabrication and assembly construction technology is widely applied to municipal bridge construction.
However, in the actual construction process, there is a problem that: after the prefabricated bridge deck slab is finished, the disassembly work of the steel template of the prefabricated bridge deck slab is complicated, and the steel template needs to be manually disassembled after each prefabrication is finished.
Disclosure of Invention
Therefore, the embodiment of the invention provides a prefabricated bridge deck steel mould supporting device and a prefabricated bridge deck pouring method, which effectively realize that the prefabricated bridge deck steel mould falls down along with the self weight, save the processes of manual operation, form removal and the like, and improve the form removal efficiency.
In one aspect, the present invention provides a prefabricated bridge deck steel mold supporting device, including: the supporting device is used for supporting a steel formwork structure for pouring the prefabricated bridge deck slab, and the steel formwork structure comprises an inner formwork and side formworks arranged on two sides of the inner formwork; the support device includes: the first supporting part is of a concrete structure, has the length of the prefabricated bridge deck and is used for supporting the inner formwork; the second supporting parts are respectively arranged on two opposite sides of the first supporting part, are used for supporting the side templates on two sides of the inner template, and are arranged at intervals along the length direction of the first supporting part; each of the second supporting portions includes: at least one telescoping member for supporting beneath the sideform.
In one embodiment of the present invention, the first support part includes: the first fixed bottom beam is of a concrete structure; and the inner template supporting piece is connected with the first fixed bottom beam and is used for supporting the inner template.
In one embodiment of the present invention, each of the second supporting parts further includes: the second fixed bottom beam is of a concrete structure, and the first supporting piece is arranged between the first supporting piece and the second fixed bottom beam; wherein the first support is for supporting the sideform.
In one embodiment of the present invention, each of the second supporting parts further includes: the second supporting piece and the at least one telescopic piece are arranged between the first supporting piece and the second fixed bottom beam; wherein the first support member and the second support member are made of I-steel respectively.
In one embodiment of the invention, each of the sideforms further comprises: the first side template part is horizontally arranged on the top surface of the second supporting part, is at the same height as the first supporting part, and is matched and connected with one side of the first supporting part, which is close to the second supporting part; and the second side template part is vertically connected with the first side template.
In one embodiment of the invention, the plurality of telescopic members are respectively hydraulic telescopic rods; the support device further includes: and the hydraulic control part is connected with the plurality of hydraulic telescopic rods and is used for controlling the plurality of hydraulic telescopic rods to simultaneously stretch.
In another aspect, the embodiment of the present invention provides a method for pouring a prefabricated bridge deck, including: s10, constructing the prefabricated bridge deck steel mould supporting device according to any one embodiment; s20, respectively arranging the inner template and the two side templates on the first supporting part and the two second supporting parts to obtain a steel template structure on the supporting device; s30, pouring concrete on the steel formwork structure to obtain a prefabricated bridge deck; and S40, demolding the two side mold plates through the two second supporting parts respectively.
In one embodiment of the present invention, the demolding of the two sideforms by the two second supports, respectively, includes: and controlling each telescopic rod of each second supporting part for supporting the same side formwork to be lowered so that the side formwork is demoulded under the action of gravity.
In an embodiment of the invention, when a plurality of telescopic parts for supporting the same side formwork are respectively hydraulic telescopic rods, and the plurality of hydraulic telescopic rods are respectively connected with the same hydraulic control part; the two side templates are demolded by the two second supporting parts respectively, including: and controlling the corresponding plurality of hydraulic telescopic rods to be lowered through the hydraulic control part, so that the side die plate is demoulded under the action of gravity.
In an embodiment of the present invention, the step of obtaining the steel form structure further includes: and adjusting the height of the telescopic piece so as to adjust the side formwork to the designed height.
In summary, the above embodiments of the present application may have one or more of the following advantages or benefits: i) the side templates of the prefabricated bridge deck fall down along with the self weight, so that the processes of manual operation, form removal and the like are saved, and the form removal efficiency is improved; and ii) after the prefabricated bridge deck is poured, the supporting device does not need to be disassembled, and can be applied to the next prefabrication work.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a prefabricated bridge deck steel mold supporting device 100 according to a first embodiment of the present invention.
Fig. 2 is a schematic structural view of the prefabricated bridge deck steel mold supporting device 100 shown in fig. 1 from another view angle.
Fig. 3 is a schematic structural view of the inner form 30 and the two sideforms 40.
Fig. 4 is a schematic view illustrating the installation of the prefabricated bridge deck steel form supporting device 100 of fig. 1 with the inner form 30 and the two sideforms 40.
Fig. 5 is a schematic flow chart of a prefabricated bridge deck pouring method according to a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of the first fixed bottom beam 11 and the plurality of second fixed bottom beams 21 obtained by implementing step S10 shown in fig. 5.
Fig. 7 is a schematic structural diagram of the prefabricated bridge deck steel mold supporting device 100 obtained by implementing step S10 described in fig. 5.
Fig. 8 is a schematic view illustrating the installation of the two sideforms 40 obtained by performing step S20 shown in fig. 5.
Fig. 9 is a schematic view illustrating the installation of the inner mold plate 30 and the two sidemold plates 40 by performing step S20 shown in fig. 5.
Fig. 10 is a schematic structural view of a prefabricated bridge deck obtained by implementing step S30 described in fig. 5.
Fig. 11 is a schematic structural diagram of the prefabricated bridge deck steel mold supporting device 100 obtained by implementing step S40 of fig. 5 after the two sideforms 40 are demolded.
Description of the main element symbols:
100 is a prefabricated bridge deck steel mould supporting device; 10 is a first supporting part; 11 is a first fixed bottom beam; 12 is an inner template support; 13 is a second fitting part; 20 is a second supporting part; 21 is a second fixed bottom beam; 22 is a first support; 23 is a second support; 24 is a telescopic piece; 30 is an inner template; 40 is a side template; 41 is a first side template; and 42 is a second sideform.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1 to 3, there are shown schematic structural views of a prefabricated bridge deck steel mold supporting device 100 according to a first embodiment of the present invention. Prefabricated decking steel mould strutting arrangement 100 is used for supporting and pours the used steel form structure of prefabricated decking, the steel form structure includes interior sheathing 30 and locates the side form 40 of the relative both sides of interior sheathing 30. The prefabricated bridge panel steel mold supporting device 100 includes, for example, a first support 10 and a plurality of second supports 20 respectively disposed at opposite sides of the first support 10 and spaced apart along a length direction of the first support 10.
The first support part 10 includes, for example, a first fixed sill 11 of a concrete structure and an inner formwork support 12 provided above the first fixed sill 11. An opening is formed in one side, away from the first fixed bottom beam 11, of the inner formwork support member 12, and a plurality of shear nails are respectively arranged on the top surface of the side. For example, the lengths of the first fixed bottom beam 11 and the inner formwork support member 12 are not less than the length of the prefabricated bridge deck, respectively.
The first support 10 further comprises, for example, two first mating members (not shown in the figures) and a second mating member 13. The two first mating members are respectively arranged at two sides of the top surface of the inner formwork support member 12, and the two sides are respectively close to the plurality of second supporting parts 20; the second fitting member 13 is interposed between the inner formwork support member 12 and the first fixed floor beam 11, and is connected to the bottom surface of the inner formwork support member 12. For example, the two first fitting members are protecting members to prevent the inner formwork support members 12 from being crushed at the corners of the top surface due to excessive gravity when supporting the prefabricated bridge deck.
Preferably, the inner formwork support 12 may be a steel beam structure.
Each of the second supporting portions 20 includes, for example, a second fixed bottom beam 21 of a concrete structure, a first supporting member 22 provided on the second fixed bottom beam 21, a second supporting member 23 interposed between the second fixed bottom beam 21 and the first supporting member 22, and at least one expansion member 24 also provided between the second fixed bottom beam 21 and the first supporting member 22.
For example, the plurality of second supporting members 23 and the plurality of telescopic members 24 of each of the second supporting portions 20 are spaced between the first supporting member 22 and the second fixed bottom beam 21.
Preferably, the first supporting member 22 is made of i-steel, and the plurality of second supporting members 20 located on the same side of the first supporting portion 10 share one or more second supporting members 23, and the second supporting members 23 may be made of i-steel having the same length as the inner formwork supporting member 12.
The prefabricated bridge deck steel form support device 100 further includes, for example, a hydraulic control member (not shown) connecting the plurality of telescopic members 24. For example, the extension member 24 is a hydraulic telescopic rod, and the hydraulic control member can connect a plurality of hydraulic telescopic rods and control the plurality of hydraulic telescopic rods to extend and retract simultaneously.
The concrete operation of the prefabricated bridge deck steel mold supporting device 100 for adjusting the height of the first support 22 is as follows: adjusting the extension of the plurality of telescopic members 24 on the plurality of second supporting parts 20 arranged at one side of the first supporting part 10 to raise the heights of the plurality of correspondingly arranged first supporting parts 22, thereby separating the top surfaces of the plurality of correspondingly arranged second supporting parts 23 from the bottom surfaces of the plurality of first supporting parts 22; and then adjusting the contraction of the plurality of telescopic members to lower the height of the plurality of correspondingly arranged first supporting members 22, so that the top surfaces of the plurality of correspondingly arranged second supporting members 23 are again in contact with the bottom surfaces of the plurality of first supporting members 22.
Referring to fig. 4, it is preferable that each of the sideforms 40 includes, for example, a first sideform member 41 horizontally disposed and a second sideform member 42 vertically connected to the first sideform member 41. Specifically, two second side formworks 42 disposed oppositely are respectively located at both sides of the inner formwork 30; one side of each first side formwork 41 connected with the second side formwork 42 is at the same height with the top surface of the inner formwork support 12, and the two first side formworks 41 which are oppositely arranged respectively contact the two oppositely arranged sides of the inner formwork support 12, so that the two first side formworks are spliced into a plane. For example, the side of the inner formworks 30 away from the first support 10 is provided with a protrusion of a "trapezoidal" structure, which encloses with the two side panels 40 an inner wall of the accommodating space for casting the prefabricated bridge deck.
[ second embodiment ]
Referring to fig. 5, which is a schematic flow chart of a prefabricated bridge deck pouring method according to a second embodiment of the present invention, the prefabricated bridge deck pouring method uses the prefabricated bridge deck steel mold supporting device according to the first embodiment to pour the prefabricated bridge deck to obtain a prefabricated bridge deck. The prefabricated bridge deck pouring method comprises the following steps:
step S10, constructing the prefabricated bridge deck steel mould supporting device according to the first embodiment;
step S20, respectively arranging an inner template and two side templates on the first supporting part and the two second supporting parts to obtain a steel template structure on the supporting device;
step S30, pouring concrete on the steel formwork structure to obtain a prefabricated bridge deck;
step S40, the two side mold plates are demolded by the two second supporting portions, respectively.
The concrete description of the method for pouring the prefabricated bridge deck is as follows:
referring to fig. 6, first, the first fixed bottom beam 11 having a length smaller than that of the prefabricated bridge deck is installed at the target site, for example, the first fixed bottom beam 11 may be concrete of not less than 35 m; and a second fixed sill 21 is provided at every 3 meters along the length direction thereof at opposite sides of the first fixed sill 11, respectively.
Referring to fig. 7, a large hoisting device is used to hoist a plurality of second supporting members 23 having the same length as the prefabricated bridge deck, and the plurality of second supporting members 23 are respectively disposed at the top ends of the second fixed bottom beams 21 located at both sides of the first fixed bottom beam 11, and at least one expansion member 24 is respectively disposed on the corresponding second fixed bottom beams 21, and then one first supporting member 22 is respectively disposed at the top end of each expansion member 24. Then, the second fitting member 13 is disposed on the top surface of the first fixed bottom beam 11 along the length direction thereof, and then the bottom surface mounting position of the inner formwork support member 12 is connected with the fitting member 13 in a fitting manner and disposed at the top end of the first fixed bottom beam 11. And (5) after the prefabricated bridge deck steel mould supporting device is built, turning to the step S20.
Referring to fig. 8 to 10, two sideforms 40 are respectively placed on the plurality of first supports 22 at opposite sides of the first fixed sill 11 by a lifting apparatus such that the two sideforms 40 are oppositely disposed; and then, hoisting the inner formworks 30 above the inner formwork support 12 in the vertical direction by using the hoisting equipment, adjusting the direction of the inner formworks 30 until the inner formworks 30 are positioned between the two oppositely arranged side formworks 30, and then arranging the inner formworks 30 at the top ends of the inner formwork support 12. Respectively adjusting the extension and retraction of each telescopic part 24 arranged on the two sides of the first supporting part 10 until the heights of the two side templates 40 reach the height required by the design, namely, the side of the two side templates 40 away from the second supporting part 20 and the top surface of the inner template supporting part 12 are at the same height, and at the moment, the two side templates are respectively spliced with the two oppositely arranged sides of the inner template supporting part 12 to form a plane, so that a steel template structure is obtained; and locking each telescopic member 24, wherein the top surfaces of the corresponding second support members 23 are separated from the bottom surfaces of the corresponding first support members 22, and then the process goes to step S30.
And pouring concrete on the steel formwork structure by the equipment with the concrete until the prefabricated bridge deck is obtained, and turning to the step S40.
Referring to fig. 11, preferably, the plurality of telescopic members 24 for supporting the same sideform 30 are respectively hydraulic telescopic rods, and the plurality of hydraulic telescopic rods are respectively connected to the same hydraulic control member. Firstly, the strength of the prefabricated bridge deck slab is confirmed until the strength is qualified, and then the two side templates 40 arranged at two sides of the inner template 30 are demoulded, wherein the concrete process is as follows: the second supporting piece 23 is firstly pulled away, the hydraulic control piece is adjusted to control the contraction of the plurality of hydraulic telescopic rods connected with the second supporting piece 23, so that the side template 40 opposite to the second supporting piece is descended along with the height of the plurality of first supporting pieces 22 until the side template is completely separated from one side of the prefabricated bridge deck matched with the side template, and then the demolding of the side template 40 on the side is completed; in contrast, the other sideform 40 is also released from the mold using the above method, and will not be described in detail. Finally, the demoulding of the two sideforms 40 on opposite sides of the prefabricated bridge deck is completed.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (3)
1. A prefabricated bridge deck slab pouring method is provided, and the prefabricated bridge deck slab pouring method is used for building a prefabricated bridge deck slab steel mould supporting device, and is characterized in that the supporting device is used for supporting a steel mould plate structure used for pouring the prefabricated bridge deck slab, and the steel mould plate structure comprises an inner mould plate and side mould plates arranged on two sides of the inner mould plate; the support device includes:
the first supporting part is of a concrete structure, has the length of the prefabricated bridge deck and is used for supporting the inner formwork; the first support portion includes: the first fixed bottom beam is of a concrete structure; the inner formwork supporting piece is connected with the first fixed bottom beam and is used for supporting the inner formwork;
the second supporting parts are respectively arranged on two opposite sides of the first supporting part, are used for supporting the side templates on two sides of the inner template, and are arranged at intervals along the length direction of the first supporting part; each of the second supporting portions includes:
at least one telescoping member for supporting beneath the sideform;
the second fixed bottom beam is of a concrete structure;
the first supporting piece is arranged between the first supporting piece and the second fixed bottom beam; wherein the first support is used for supporting the sideform;
the second supporting piece and the at least one telescopic piece are arranged between the first supporting piece and the second fixed bottom beam; wherein the first support member and the second support member are made of I-steel respectively;
each of the sideforms includes: the first side template part is horizontally arranged on the top surface of the second supporting part, is at the same height as the first supporting part, and is matched and connected with one side of the first supporting part, which is close to the second supporting part; the second side template part is vertically connected with the first side template;
the plurality of telescopic pieces are respectively hydraulic telescopic rods; the support device further includes: the hydraulic control part is connected with the plurality of hydraulic telescopic rods and is used for controlling the plurality of hydraulic telescopic rods to simultaneously extend and retract;
the prefabricated bridge deck pouring method comprises the following steps:
respectively arranging the inner template and the two side templates on the first supporting part and the two second supporting parts to obtain a steel template structure on the supporting device; the two side formworks are respectively placed on the first supporting pieces on the two opposite sides of the first fixed bottom beam by using lifting equipment, so that the two side formworks are oppositely arranged; hoisting an inner template above the inner template support in the vertical direction by using the hoisting equipment, adjusting the direction of the inner template until the inner template is positioned between the two oppositely arranged side templates, and then arranging the inner template at the top end of the inner template support; respectively adjusting the telescopic pieces to enable the heights of the two side templates to reach the design requirement height, locking the telescopic pieces, and separating the top surfaces of the corresponding second supporting pieces from the bottom surfaces of the corresponding first supporting pieces;
pouring concrete on the steel formwork structure to obtain a prefabricated bridge deck;
demolding the two side templates through the two second supporting parts respectively; and the second supporting piece is firstly pulled away, the hydraulic control piece is adjusted to control the contraction of the plurality of hydraulic telescopic rods connected with the second supporting piece, so that the side die plate opposite to the second supporting piece descends along with the height of the plurality of first supporting pieces until the side die plate is completely separated from one side of the prefabricated bridge deck matched with the side die plate, and then the demolding of the side die plate is completed.
2. The precast bridge deck pouring method according to claim 1, wherein when the plurality of telescopic members for supporting the same side formwork are respectively hydraulic telescopic rods, and the plurality of hydraulic telescopic rods are respectively connected with the same hydraulic control member; the two side templates are demolded by the two second supporting parts respectively, including:
and controlling the corresponding plurality of hydraulic telescopic rods to be lowered through the hydraulic control part, so that the side die plate is demoulded under the action of gravity.
3. The precast bridge deck pouring method according to claim 1, wherein in the step of obtaining the steel formwork structure, further comprising:
and adjusting the height of the telescopic piece so as to adjust the side formwork to the designed height.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010967619.5A CN112140290B (en) | 2020-09-15 | 2020-09-15 | Pouring method for prefabricated bridge deck |
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| CN202010967619.5A CN112140290B (en) | 2020-09-15 | 2020-09-15 | Pouring method for prefabricated bridge deck |
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| CN112140290B true CN112140290B (en) | 2022-02-18 |
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| CN113524430A (en) * | 2021-06-10 | 2021-10-22 | 中铁隧道局集团建设有限公司 | Method for prefabricating bridge deck by using stub matching method |
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| Publication number | Publication date |
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| CN112140290A (en) | 2020-12-29 |
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