CN111519542A - Magnetic suction type positioning device for improving hoisting precision of large-tonnage steel cover beam and construction method thereof - Google Patents
Magnetic suction type positioning device for improving hoisting precision of large-tonnage steel cover beam and construction method thereof Download PDFInfo
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- CN111519542A CN111519542A CN202010394453.2A CN202010394453A CN111519542A CN 111519542 A CN111519542 A CN 111519542A CN 202010394453 A CN202010394453 A CN 202010394453A CN 111519542 A CN111519542 A CN 111519542A
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a magnetic attraction type positioning device for improving the hoisting precision of a large-tonnage steel cover beam and a construction method thereof. The secondary fastener and the primary fastener are matched for use and are respectively adsorbed to the bottom of the steel structure bent cap or the periphery of the steel structure pier stud through the disc type magnet. The invention realizes the hoisting of the large-tonnage steel bent cap through the magnetic snap fasteners, solves the problem of difficult aerial positioning of the hoisting of the steel structure bridge, improves the hoisting precision, is convenient to dismantle, can be repeatedly used for many times, does not influence the strength of the member, and improves the structural quality of bridge construction.
Description
Technical Field
The invention belongs to the technical field of steel structure bridge construction, and particularly relates to a magnetic type positioning device for improving the hoisting precision of a large-tonnage steel cover beam and a construction method thereof.
Background
The steel has high strength, good plasticity and toughness, short construction period, good earthquake resistance and convenient transportation and hoisting, and in recent years, the bridge construction in China is rapidly developed, and the steel structure bridge is widely applied. The structural member of the steel structure is generally manufactured and processed in a factory, and has high industrialization degree and high precision. The hoisting precision requirement of the large-tonnage steel member is high, and the hoisting method can be comprehensively determined according to the specific conditions of the engineering, including the conditions of a site operation surface, the member processing equipment, the hoisting mechanical capacity and the like. The conventional hoisting process sets up the construction connecting plate in chain link point department, welds after preliminary location temporarily, cuts off the connecting plate after whole construction of overall structure is accomplished, local plane again. According to the method, welding residual stress and residual deformation can be generated on the part of the section of the member, the surface is uneven after the temporary fixing plate is cut off after the construction is integrally completed, the construction precision is low, the defect that the local bearing capacity is weakened can occur, the bearing capacity of the section of the rod piece is influenced, and the structural quality of bridge construction is reduced.
Disclosure of Invention
Aiming at the defects pointed out in the background technology, the invention provides a magnetic type positioning device for improving the hoisting precision of a large-tonnage steel cover beam and a construction method thereof, and aims to solve the problems in the prior art in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a magnetic type positioning device for improving the hoisting precision of a large-tonnage steel cover beam comprises a male fastener and a female fastener, wherein the male fastener comprises a first disc-shaped magnet and a T-shaped steel plate, the T-shaped steel plate comprises a first connecting steel plate and a male buckle plate vertically fixed on the first connecting steel plate, the first connecting steel plate is adsorbed on the first disc-shaped magnet, and the first disc-shaped magnet and the first connecting steel plate are connected with a demagnetizing bolt; the female fastener comprises a second disc magnet and an n-shaped steel plate, the n-shaped steel plate comprises a second connecting steel plate and a female buckle plate vertically fixed on the second connecting steel plate, the second connecting steel plate is adsorbed on the second disc magnet, and the second disc magnet and the second connecting steel plate are connected with a degaussing bolt; the son fastener adsorbs in steel construction bent cap bottom through first disc magnet, and the female fastener passes through second disc magnet and adsorbs around the steel construction pier stud, or the son fastener adsorbs around the steel construction pier stud through first disc magnet, and the female fastener passes through second disc magnet and adsorbs in steel construction bent cap bottom.
Preferably, a rib plate is arranged between the outer side of the female buckle plate and the second connecting steel plate.
Preferably, the side of the sub-buckle plate far away from the first connecting steel plate is provided with a circular arc chamfer or a straight edge chamfer.
Preferably, the distance between the female buckle plates in the n-shaped steel plate is slightly larger than the thickness of the secondary buckle plates.
The invention further provides a construction method of the magnetic type positioning device for improving the hoisting precision of the large-tonnage steel cover beam, which comprises the following steps:
(1) before the steel structure capping beam is hoisted, installing a sub-fastener at the bottom of the steel structure capping beam according to the hoisting position and the size of the steel structure pier stud, and installing a female fastener at the corresponding position around the steel structure pier stud, or installing a female fastener at the bottom of the steel structure capping beam and installing a sub-fastener at the corresponding position around the steel structure pier stud;
(2) hoisting steel structure bent cap to mounted position top, the adjusting position makes the son buckle of son fastener and the female buckle board intermediate space of female fastener align, then slowly fall down the steel structure bent cap, make the son buckle insert in the intermediate space of female buckle, after the accurate position is confirmed in local fine setting, carry out the connection of steel structure bent cap and steel structure pier stud, later dismantle son fastener and female fastener, make son fastener and female fastener follow steel structure bent cap or steel structure pier stud separation and demolish through tightening the demagnetization bolt.
Preferably, 4 female fasteners or 4 sub-fasteners of installation at least are installed around the steel construction pier stud, the sub-fastener or the female fastener of corresponding quantity are installed to the position department that corresponds on the steel construction bent cap.
Preferably, the female fasteners or the male fasteners are installed around the steel structure pier stud at equal intervals.
Compared with the defects and shortcomings of the prior art, the invention has the following beneficial effects:
the magnetic-type positioning structure is adopted, the dismounting is convenient, the procedures of high-temperature cutting and regrinding are not needed, the component is ensured to have no residual stress and residual deformation, the strength of the component is not influenced, and the magnetic-type positioning device can be repeatedly used for many times. The steel structure bridge hoisting construction method adopting the magnetic type positioning device has the advantages of high precision, low construction cost, wide application range, reusability and simple operation, effectively solves the problem of local re-cutting of the connecting plate after the bridge is hoisted, and improves the structural quality and the appearance quality of bridge construction.
Drawings
Fig. 1 is a schematic side view of a magnetic-type positioning device for hoisting a large-tonnage steel capping beam according to an embodiment of the present invention.
Fig. 2 is a schematic view of a bottom view structure of the magnetic-type positioning device for hoisting a large-tonnage steel cover beam according to the embodiment of the present invention.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is a schematic front view of a sub-fastener according to an embodiment of the present invention.
Fig. 5 is a schematic side view of a sub-fastener according to an embodiment of the invention.
Fig. 6 is a schematic bottom view of a sub-fastener according to an embodiment of the invention.
Fig. 7 is a schematic front view of a female fastener according to an embodiment of the present invention.
Fig. 8 is a schematic top view of a female fastener according to an embodiment of the present invention.
Fig. 9 is a schematic side view of a female fastener according to an embodiment of the invention.
Fig. 10 is a schematic structural view of a female fastener with a rib plate according to an embodiment of the present invention.
Fig. 11 is a schematic structural view of another female fastener with a rib plate according to an embodiment of the present invention.
In the figure: 1-steel structure capping beam; 2-steel structure pier stud; 3-magnetic attraction type positioning device; 4-sub-fasteners; 5-female fastener; 6-a first disc magnet; 7-T type steel plate; 701-first connecting steel plate; 702-a gusset plate; 8-demagnetizing the bolt; 9-a second disc magnet; 10-n-shaped steel plate; 101-a second connecting steel plate; 102-a female buckle plate; 11-ribbed plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The magnetic type positioning device 3 for improving the hoisting precision of the large-tonnage steel cover beam comprises a male fastener 4 and a female fastener 5. The structure of the sub-fastener 4 is shown in fig. 4-6, the sub-fastener 4 includes a first disc-shaped magnet 6 and a T-shaped steel plate 7, the T-shaped steel plate 7 includes a first connection steel plate 701 and a sub-fastener plate 702 vertically fixed on the first connection steel plate 701, the first connection steel plate 701 is adsorbed on the first disc-shaped magnet 6, the first disc-shaped magnet 6 and the first connection steel plate 701 are connected with demagnetizing bolts 8, the bolt caps of the demagnetizing bolts 8 are arranged outside the first connection steel plate 701, and a certain distance is left between the bolt caps and the first connection steel plate 701, so that the demagnetizing bolts 8 can be further screwed towards the first disc-shaped magnet 6 by the first connection steel plate 701 when the sub-fastener 4 is removed in the later period. The structure of the female fastener 5 is shown in fig. 7-9, the female fastener 5 includes a second disc magnet 9 and an n-shaped steel plate 10, the n-shaped steel plate 10 includes a second connecting steel plate 101 and a female buckle plate 102 vertically fixed on the second connecting steel plate 101, the second connecting steel plate 101 is attached to the second disc magnet 9, the second disc magnet 9 and the second connecting steel plate 101 are connected with a degaussing bolt 8, similarly, a bolt cap of the degaussing bolt 8 is arranged outside the second connecting steel plate 101, and a certain distance is left between the bolt cap and the second connecting steel plate 101, so that the degaussing bolt 8 can be further screwed towards the second disc magnet 9 by the second connecting steel plate 101 when the female fastener 5 is removed at a later stage.
The primary mode is that the secondary fastener 4 is adsorbed to the bottom of the steel structure capping beam 1 through the first disc magnet 6, the primary fastener 5 is adsorbed to the periphery of the steel structure pier stud 2 through the second disc magnet 9, and one side of the secondary fastener 702 away from the first connecting steel plate 701 is provided with an arc chamfer or a straight chamfer (refer to fig. 1-3). The second mode is that the secondary fastener 4 is adsorbed around the steel structure pier stud 2 through the first disc magnet 6, and the primary fastener 5 is adsorbed at the bottom of the steel structure bent cap 1 through the second disc magnet 9. When in use, the male buckle 4 and the female buckle 5 are nested, so that the male buckle 702 is inserted into the middle gap between the two female buckle plates 102, and therefore, the distance between the female buckle plates 102 in the pi-shaped steel plate 10 is slightly larger than the thickness of the male buckle plate 702. In order to enhance the strength of the female buckle plate 102, the ribbed plates 11 are arranged between the outer side of the female buckle plate 102 and the second connecting steel plate 101, as shown in fig. 10-11, 1 ribbed plate 11 may be arranged in the middle of the outer side of the female buckle plate 102, or ribbed plates 11 may be arranged at two edges of the outer side of the female buckle plate 102.
The construction method for hoisting the large-tonnage steel bent cap by adopting the magnetic type positioning device comprises the following steps:
(1) before steel construction bent cap 1 hoists, according to the size of hoist and mount position and steel construction pier stud 2 at the bottom installation sub-fastener 4 of steel construction bent cap 1 (or installation box 5), correspond position department installation box 5 around steel construction pier stud 2 (sub-fastener 4 and box 5 are supporting to be used, during the bottom installation box 5 of steel construction bent cap 1, correspond position department installation sub-fastener 4 around steel construction pier stud 2). In the sub-fastener 4, leave the distance between the cap of the bolt of demagnetization bolt 8 and the first steel sheet 701 that connects, can further tighten demagnetization bolt 8 when the sub-fastener 4 is dismantled to the later stage of being convenient for, on the same ground, in the box 5, leave the distance between the cap of the bolt of demagnetization bolt 8 and the second disc magnet 101, can further tighten demagnetization bolt 8 when the box 5 is dismantled to the later stage of being convenient for. In order to ensure the positioning effect, 4 female fasteners 5 or 4 sub-fasteners 4 are installed at least to the periphery of steel structure pier stud 2, female fasteners 5 or sub-fasteners 4 are installed at equal intervals around steel structure pier stud 2, and corresponding number of sub-fasteners 4 or female fasteners 5 are installed to the position department that corresponds on steel structure bent cap 1.
(2) Lifting the steel structure bent cap 1 to the mounting position top, adjusting the position to align the middle space of the male buckle plate 102 of the male buckle 5 with the male buckle plate 702 of the male buckle 4, then slowly dropping the steel structure bent cap 1, inserting the male buckle plate 702 into the middle space of the female buckle plate 102, after determining the accurate position through local fine adjustment, connecting the steel structure bent cap 1 with the steel structure pier stud 2, and then removing the male buckle 4 and the female buckle 5. The method for dismounting the magnetic type positioning device is described by taking the example that the bottom of the steel structure capping beam 1 absorbs the terminal fastener 4 and the periphery of the steel structure pier stud 2 absorbs the female fastener 5, the sub-fastener 4 is dismounted by screwing the demagnetizing bolt 8 on the sub-fastener 4, and the first disc magnet 6 is moved towards the direction far away from the steel structure capping beam 1 by the rotation of the demagnetizing bolt 8, so that the first disc magnet 6 is separated from the steel structure capping beam 1, and in the same method, the female fastener 5 is dismounted by screwing the demagnetizing bolt 8 on the female fastener 5 so that the second disc magnet 9 is separated from the steel structure pier stud 2. This magnetism is inhaled formula positioner 3 installation and is dismantled simply, repeatedly usable does not influence the intensity of component, can effectively improve the structural quality of the precision of steel construction bridge hoist and mount and bridge construction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A magnetic type positioning device for improving the hoisting precision of a large-tonnage steel cover beam is characterized by comprising a male fastener and a female fastener, wherein the male fastener comprises a first disc-shaped magnet and a T-shaped steel plate, the T-shaped steel plate comprises a first connecting steel plate and a male fastener plate vertically fixed on the first connecting steel plate, the first connecting steel plate is adsorbed on the first disc-shaped magnet, and the first disc-shaped magnet and the first connecting steel plate are connected with a demagnetizing bolt; the female fastener comprises a second disc magnet and an n-shaped steel plate, the n-shaped steel plate comprises a second connecting steel plate and a female buckle plate vertically fixed on the second connecting steel plate, the second connecting steel plate is adsorbed on the second disc magnet, and the second disc magnet and the second connecting steel plate are connected with a degaussing bolt; the son fastener adsorbs in steel construction bent cap bottom through first disc magnet, and the female fastener passes through second disc magnet and adsorbs around the steel construction pier stud, or the son fastener adsorbs around the steel construction pier stud through first disc magnet, and the female fastener passes through second disc magnet and adsorbs in steel construction bent cap bottom.
2. The magnetic-type positioning device for improving the hoisting precision of the large-tonnage steel cover beam as recited in claim 1, wherein a ribbed plate is arranged between the outer side of the female buckle plate and the second connecting steel plate.
3. The magnetic-type positioning device for improving the hoisting precision of the large-tonnage steel cover beam as recited in claim 1, wherein one side of the sub-buckle plate far away from the first connecting steel plate is provided with a circular arc chamfer or a straight edge chamfer.
4. The magnetic attraction type positioning device for improving the hoisting precision of the large-tonnage steel cover beam as claimed in claim 1, wherein the distance between the female buckle plates in the n-shaped steel plate is slightly larger than the thickness of the secondary buckle plates.
5. A construction method of the magnetic-type positioning device for improving the hoisting precision of the large-tonnage steel cover beam according to any one of claims 1 to 4, which comprises the following steps:
(1) before the steel structure capping beam is hoisted, installing a sub-fastener at the bottom of the steel structure capping beam according to the hoisting position and the size of the steel structure pier stud, and installing a female fastener at the corresponding position around the steel structure pier stud, or installing a female fastener at the bottom of the steel structure capping beam and installing a sub-fastener at the corresponding position around the steel structure pier stud;
(2) hoisting steel structure bent cap to mounted position top, the adjusting position makes the son buckle of son fastener and the female buckle board intermediate space of female fastener align, then slowly fall down the steel structure bent cap, make the son buckle insert in the intermediate space of female buckle, after the accurate position is confirmed in local fine setting, carry out the connection of steel structure bent cap and steel structure pier stud, later dismantle son fastener and female fastener, make son fastener and female fastener follow steel structure bent cap or steel structure pier stud separation and demolish through tightening the demagnetization bolt.
6. The construction method of the magnetic-type positioning device for improving the hoisting precision of the large-tonnage steel cap beam according to claim 5, wherein at least 4 female fasteners or at least 4 male fasteners are installed around the steel structure pier stud, and corresponding numbers of male or female fasteners are installed at corresponding positions on the steel structure cap beam.
7. The construction method of the magnetic-type positioning device for improving the hoisting precision of the large-tonnage steel cover beam according to claim 5, wherein female fasteners or male fasteners are arranged on the periphery of the steel structure pier stud at equal intervals.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394453.2A CN111519542A (en) | 2020-05-11 | 2020-05-11 | Magnetic suction type positioning device for improving hoisting precision of large-tonnage steel cover beam and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394453.2A CN111519542A (en) | 2020-05-11 | 2020-05-11 | Magnetic suction type positioning device for improving hoisting precision of large-tonnage steel cover beam and construction method thereof |
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Cited By (1)
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| CN114960440A (en) * | 2022-05-29 | 2022-08-30 | 中国五冶集团有限公司 | Positioning device for beam erection |
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Application publication date: 20200811 |
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