CN111424549A - Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template - Google Patents

Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template Download PDF

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Publication number
CN111424549A
CN111424549A CN202010235470.1A CN202010235470A CN111424549A CN 111424549 A CN111424549 A CN 111424549A CN 202010235470 A CN202010235470 A CN 202010235470A CN 111424549 A CN111424549 A CN 111424549A
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CN
China
Prior art keywords
steel
template
fish
wire rope
construction
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010235470.1A
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Chinese (zh)
Inventor
徐攀
龚俊
杨多娇
陈大为
雷文浩
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China First Metallurgical Group Co Ltd
Original Assignee
China First Metallurgical Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to CN202010235470.1A priority Critical patent/CN111424549A/en
Publication of CN111424549A publication Critical patent/CN111424549A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00Bridges characterised by the cross-section of their bearing spanning structure
    • E01D2/04Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type

Abstract

The invention discloses a construction device and a construction method for dismantling a steel template of a hyperboloid variable cross-section fish-bellied box beam, which comprises a bottom template of the steel template of the hyperboloid variable cross-section fish-bellied box beam; the device comprises a traction device, a first clamping device and a second clamping device, wherein the traction device comprises a winch and a first steel wire rope, the winch is connected with the first steel wire rope, and the first steel wire rope is connected with a bottom template to be disassembled; and the vibrating device comprises a vibrator, and the upper end of the vibrator is arranged at the lower end of the bottom template to vibrate so as to demould the bottom template. The steel form is disassembled in groups, the disassembling speed is high, the surface of the box girder can be guaranteed not to be damaged after being disassembled, the variable cross section line type can be effectively guaranteed, and the technical problem of the construction site landscape bridge hyperboloid fish belly type variable cross section box girder steel form disassembling construction is well solved.

Description

Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template
Technical Field
The invention relates to the technical field of box girder steel formwork dismantling, in particular to a double-curved-surface variable-section fish-bellied box girder steel formwork dismantling construction device and method.
Background
In recent years, along with the rapid development of the building industry, the requirement of urban bridges on landscape is higher and higher, the fish-bellied box girders are mostly adopted in design, the fish-bellied box girder bridges have the characteristic of attractive appearance, the aesthetic design of the bridges is met, common fish-bellied continuous box girders are mostly of uniform cross sections, the assembly of steel templates in box girder construction is more regular and is widely used, the shape and the structural form of curved variable cross section fish-bellied steel box girders are complex, and new challenges are brought to the dismantling construction of the steel templates. Curved shape variable cross section fish-bellied continuous case roof beam steel form is owing to receive gravity and each extrusion of assembling the piece, and the template is dismantled comparatively difficultly, and the molding in cross-section leads to the space narrow and small in addition, and the steel form is demolishd and can only utilize small-size power equipment to assist to demolishs the transportation to it is still not impaired to pay attention to protection case roof beam surface in the dismantlement process, reaches impression quality effect. Therefore, if the traditional construction process is adopted, the construction quality and the overall smoothness of the appearance of the landscape bridge are difficult to ensure, and the construction period can be greatly prolonged if the construction difficulty is increased.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a device and a method for dismantling the steel templates of the fish-bellied type box girder with the hyperboloid variable cross section, which are used for dismantling the steel templates in groups, have high dismantling speed, can ensure that the surface of the box girder is not damaged after being dismantled, can effectively ensure the line type of the variable cross section, and better solve the technical problem of dismantling the steel templates of the fish-bellied type box girder with the hyperboloid variable cross section of a landscape bridge on a construction site.
In order to achieve the purpose, the invention provides the following technical scheme that the construction device for dismantling the steel template of the fish-bellied box girder with the hyperboloid variable cross section comprises
A bottom template of the hyperboloid variable cross-section fish-bellied box girder steel template;
the device comprises a traction device, a first clamping device and a second clamping device, wherein the traction device comprises a winch and a first steel wire rope, the winch is connected with the first steel wire rope, and the first steel wire rope is connected with a bottom template to be disassembled;
and the vibrating device comprises a vibrator, and the upper end of the vibrator is arranged at the lower end of the bottom template to vibrate so as to demould the bottom template.
The vibrator is arranged between the bottom template and the top support, the top support is fixed on the steel pipe frame, and the steel pipe frame is fixed on the ground to support the bottom template.
The steel wire rope fixing device comprises a first steel wire rope, a second steel wire rope and a fixing pull ring, wherein the first steel wire rope is fixed on the first steel wire rope, the second steel wire rope is fixed on the ground, and the second steel wire rope is connected between the first steel wire rope and the fixing pull ring.
Furthermore, a weight box is arranged on the winch.
The invention also provides a construction method for dismantling the steel template of the hyperboloid variable cross-section fish-bellied box girder, which is characterized by comprising the following steps of:
s1, segmenting a steel template according to a dismantling sequence;
s2, installing a traction device and a restraint device;
s3, mounting a vibration device;
s4, starting a vibration device to demould;
s5, adjusting the height of the jacking;
step S6: and drawing the bottom template to be removed.
Further, in step S2, the winding engine is fixed on the base, the weight box is fixed on the base, the fixing pull ring is fixed on the concrete ground, the restraining ring needs to be fixed on the first steel wire rope during use, and the second steel wire rope is connected between the fixing pull ring and the restraining ring.
Further, in the step S4, when the vibrator and the winch traction device are installed, the steel form is removed, the removal is performed by one end of the box girder, every two rows are formed into one group, every two rows are removed once, every two adjacent bolts are removed, then the first steel wire rope keeps a straight state during the removal, and the vibrator is started to stop vibrating when the steel form is separated from the bottom form.
Further, in step S5, the top support on the steel pipe frame is adjusted to reduce the height of the top support, so as to ensure the use of space and minimize the damage to the steel pipe frame and the top support when the bottom formwork is dragged.
Further, in the step S6, the hoisting machine pulls the adjusted jacking until the bottom formwork is pulled out for demolition, the whole demolition flow is circularly demolished, and the steel pipe frame is demolished or lowered in time after the first row is demolished.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the invention mainly solves the problem of formwork traction demolition by using a winch, and solves the problem of difficult demolition when the steel mould is extruded by a vibrator in the demolition process. The dismantlement in-process because wire rope's elasticity probably has potential safety hazards such as resilience, this problem is retrained through fixed restraint ring and is solved, because whole template weight of demolising is about 300KG, the hoist engine need not carrying out the pre-buried installation of basis, the mode of putting the weight box on the adoption platform both ends solves stability and balanced problem, improve the equipment work efficiency of work progress, through the better solution of the on-the-spot view bridge hyperboloid fish belly formula variable cross section case roof beam steel form demolishs construction technical problem of above innovation method.
Drawings
FIG. 1 is a schematic view of a box beam form bracket of the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view of the present invention;
FIG. 3 is a partial schematic view of the vibration apparatus of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line A of the present invention;
FIG. 1-bottom template; 2-a winch; 3-a first steel wire rope; 4-a vibrator; 5-jacking; 6-a steel pipe frame; 7-a confinement ring; 8-a second wire rope; 9-fixing a pull ring; 10-weight box; 11-box girder.
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.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 to 4, the application provides a construction device for dismantling a steel template of a hyperboloid variable cross-section fish-bellied box girder, which comprises
A bottom template 1 of a hyperboloid variable cross-section fish belly type box girder steel template;
the device comprises a traction device, a first lifting device and a second lifting device, wherein the traction device comprises a winch 2 and a first steel wire rope 3, the winch 2 is connected with the first steel wire rope 3, and the first steel wire rope 3 is connected with a bottom template 1 to be disassembled;
and the vibrating device comprises a vibrator 4, and the upper end of the vibrator 4 is arranged at the lower end of the bottom template 1 to vibrate so as to demould the bottom template 1.
In the above embodiment, the vibrator 4 is installed below the bottom formwork 1, the bottom formwork 1 is separated from the steel formwork surface by continuously vibrating the bottom formwork 1 through the vibrator 4, and then the steel formwork is pulled through the pulling device to be disassembled in groups.
In a further preferred embodiment, the steel tube formwork further comprises a top support 5, the vibrator 4 is installed between the bottom formwork 1 and the top support 5, the top support 5 is fixed on a steel tube frame 6, and the steel tube frame 6 is fixed on the ground to support the bottom formwork 1.
In the above embodiment, after the bottom formwork 1 is separated from the steel formwork surface, the top support 5 is adjusted to adjust the space when the steel formwork is dragged, so that the use of the space when the steel formwork is dragged and the damage to the steel pipe frame 6 and the top support 5 are reduced as much as possible are ensured.
In a further preferred embodiment, the cable fixing device further comprises a restraining device, wherein the restraining device comprises a restraining ring 7, a second steel wire rope 8 and a fixing pull ring 9, the restraining ring 7 is installed on the first steel wire rope 3, the fixing pull ring 9 is fixed on the ground, and the second steel wire rope 8 is connected between the restraining ring 7 and the fixing pull ring 9.
In the above embodiment, the fixing pull ring 9 is fixed on the concrete ground by using a large expansion bolt, and the restraining ring 7 needs to be fixed on the first steel wire rope 3 during use, so that the restraining effect during rebounding is achieved, and the construction safety is ensured.
In a further preferred embodiment, the hoisting machine 2 is provided with a weight box 10.
In the above embodiment, the winch 2 does not need to be installed in a foundation embedded manner, the stability and balance problems are solved by the mode that the weight box 10 is placed at two ends of the platform, the direction of the winch 2 is adjusted at any time, the winch is detached by the matched vibrator 4, the box girder is small in damage and safe to detach, and the weight box 10 can be a water tank.
The embodiment also provides a construction method for dismantling the steel template of the hyperboloid variable cross-section fish-bellied box girder, which is characterized by comprising the following steps of:
s1, segmenting a steel template according to a dismantling sequence;
s2, installing a traction device and a restraint device;
s3, mounting a vibration device;
s4, starting a vibration device to demould;
s5, adjusting the height of the jacking 5;
step S6: and drawing the bottom template to be removed.
In the above embodiment, in step S2, the hoist 2 is fixed on the base, the weight box 10 is fixed on the base, the fixing pull ring 9 is fixed on the concrete floor, the restraining ring 7 is fixed on the first wire rope 3 when in use, and the second wire rope 8 is connected between the fixing pull ring 9 and the restraining ring 7.
In the step S4, when the vibrator 4 and the traction device of the winch 2 are installed, the steel formwork is removed from the box girder 11, and the two rows are grouped, and every two rows are removed once, two adjacent bolts are removed, and then the first steel wire rope 3 is kept in a straight state when the steel formwork is removed, and the vibrator 4 is started to stop vibrating when the steel formwork is separated from the bottom formwork 1.
In step S5, the top bracket 5 on the steel pipe frame 6 is adjusted to reduce the height of the top bracket 5, thereby ensuring the use of space and minimizing the damage to the steel pipe frame 6 and the top bracket 5 when the bottom formwork 1 is dragged.
In the step S6, the hoisting machine 2 pulls the top support 5 after adjustment until the bottom formwork 1 is pulled out for demolition, the whole demolition process is circularly demolished, and the steel pipe frame 6 is demolished or lowered in time after the first row is demolished.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.

Claims (9)

1. The utility model provides a construction equipment is demolishd to hyperboloid variable cross section fish-belly formula case roof beam steel form which characterized in that: the bottom template comprises a hyperboloid variable cross-section fish-bellied box girder steel template;
the device comprises a traction device, a first clamping device and a second clamping device, wherein the traction device comprises a winch and a first steel wire rope, the winch is connected with the first steel wire rope, and the first steel wire rope is connected with a bottom template to be disassembled;
and the vibrating device comprises a vibrator, and the upper end of the vibrator is arranged at the lower end of the bottom template to vibrate so as to demould the bottom template.
2. The hyperboloid variable cross-section fish-bellied box girder steel form demolition construction device of claim 1, which is characterized in that: the vibrator is arranged between the bottom template and the top support, the top support is fixed on the steel pipe frame, and the steel pipe frame is fixed on the ground to support the bottom template.
3. The hyperboloid variable cross-section fish-bellied box girder steel form demolition construction device of claim 1, which is characterized in that: the steel wire rope fixing device is characterized by further comprising a restraining device, wherein the restraining device comprises a restraining ring, a second steel wire rope and a fixing pull ring, the restraining ring is installed on the first steel wire rope, the fixing pull ring is fixed on the ground, and the second steel wire rope is connected between the restraining ring and the fixing pull ring.
4. The hyperboloid variable cross-section fish-bellied box girder steel form demolition construction device of claim 1, which is characterized in that: and the winch is provided with a weight box.
5. The construction method for dismantling the steel formwork of the hyperboloid variable cross-section fish-bellied box girder according to the claims 1 to 4, is characterized by comprising the following steps:
s1, segmenting a steel template according to a dismantling sequence;
s2, installing a traction device and a restraint device;
s3, mounting a vibration device;
s4, starting a vibration device to demould;
s5, adjusting the height of the jacking;
step S6: and drawing the bottom template to be removed.
6. The construction method for dismantling the steel formwork of the fish-bellied box girder with the hyperboloid variable cross section according to claim 5, is characterized in that: in the step S2, the hoist is fixed on the base, the weight box is fixed on the base, the fixing pull ring is fixed on the concrete ground, the restraining ring is fixed on the first steel wire rope when in use, and the second steel wire rope is connected between the fixing pull ring and the restraining ring.
7. The construction method for dismantling the steel formwork of the fish-bellied box girder with the hyperboloid variable cross section according to claim 5, is characterized in that: in the step S4, when the vibrator and the winch traction device are installed, the steel form is removed, the removal is performed by one end of the box girder, every two rows form a group, every two rows are removed once, every two adjacent bolts are removed, then the first steel wire rope is kept in a straight state during the removal, and the vibrator is started to stop vibrating when the steel form is separated from the bottom form plate surface.
8. The construction method for dismantling the steel formwork of the fish-bellied box girder with the hyperboloid variable cross section according to claim 5, is characterized in that: in the step S5, the top support on the steel pipe frame is adjusted, the height of the top support is reduced, and the use of space and the damage to the steel pipe frame and the top support as much as possible when the bottom formwork is dragged are ensured.
9. The construction method for dismantling the steel formwork of the fish-bellied box girder with the hyperboloid variable cross section according to claim 5, is characterized in that: in the step S6, the hoisting machine pulls the top support after the top support is adjusted until the bottom formwork is pulled out for demolition, the whole demolition process is circularly demolished, and the steel pipe frame is demolished or lowered in time after the first row is demolished.
CN202010235470.1A 2020-03-30 2020-03-30 Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template Pending CN111424549A (en)

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CN202010235470.1A CN111424549A (en) 2020-03-30 2020-03-30 Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template

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Application Number Priority Date Filing Date Title
CN202010235470.1A CN111424549A (en) 2020-03-30 2020-03-30 Construction device and method for dismantling hyperboloid variable cross-section fish-bellied box girder steel template

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