CN110184947B - Box girder hanging basket suspension casting system and construction method - Google Patents
Box girder hanging basket suspension casting system and construction method Download PDFInfo
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- CN110184947B CN110184947B CN201910362958.8A CN201910362958A CN110184947B CN 110184947 B CN110184947 B CN 110184947B CN 201910362958 A CN201910362958 A CN 201910362958A CN 110184947 B CN110184947 B CN 110184947B
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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
- E01D21/10—Cantilevered erection
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Abstract
The invention relates to a box girder hanging basket suspension casting system, which comprises a triangular hanging basket system, a box girder hanging basket suspension casting inner mold fixing system, a triangular hanging basket traveling system and a hanging basket auxiliary fixing side mold; the triangular hanging basket system comprises a lower cross beam, an upper longitudinal beam, a box girder, side supports, an overhanging bar support, a top overhanging bar, a longitudinal support bar, a hanging basket and a pier stud; the box girder hanging basket suspended casting inner mold fixing system comprises an upper longitudinal beam, a lower cross beam, a first bottom plate, an inclined strut and a lateral top plate; the triangular hanging basket traveling system comprises a longitudinal support rod, an L-shaped fixing plate, a groove-shaped block and a slideway; the auxiliary fixed side die of the hanging basket comprises a side support, a bottom rod, a vertical connecting rod and a side balancing rod. The invention has the beneficial effects that: the longitudinal support rod and the top extension rod designed by the invention can provide enough support force for the hanging basket, and in addition, the top extension rod is provided with the tooth openings which correspond to the convex ribs on the reserved openings, so that the connection between the hanging basket and the extension rod can be reinforced.
Description
Technical Field
The invention relates to the field of box girders, in particular to a box girder hanging basket suspension casting system and a construction method.
Background
In the construction process of the large-span cantilever beam bridge, a large-span template cannot be erected in high altitude, so that the construction of the bridge cannot be carried out in an ordinary mode. Aiming at the problems, the construction usually adopts the steps of placing a prefabricated box girder on a pier stud, then hanging a hanging basket on the prefabricated box girder, and then further pouring the box girder in the hanging basket to increase the length of the box girder.
The stability and the building speed of the hanging basket influence the construction quality of the newly-poured box girder. At present, a large number of steel trusses are adopted for maintaining the stability of the cradle and bearing the load of the cradle, the construction speed of the method is low, and the steel trusses are built for a long time; in addition, after the newly poured box girder is constructed, the length of the newly poured box girder needs to be continuously prolonged, at the moment, a hanging basket component on the box girder needs to be dismantled, and then the hanging basket is built on the outer side of the newly poured box girder, so that time and labor are wasted; in the box girder pouring process, the stability of the box girder template also needs to be ensured to a certain extent, otherwise, the quality of the newly poured box girder is also influenced.
In summary, it is very important to find a box girder hanging basket suspended casting system capable of quickly building and moving a hanging basket and a construction method thereof.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a box girder hanging basket suspension casting system and a construction method.
The box girder hanging basket suspension casting system comprises a triangular hanging basket system, a box girder hanging basket suspension casting inner mold fixing system, a triangular hanging basket traveling system and a hanging basket auxiliary fixed side mold;
the triangular hanging basket system comprises a lower cross beam, an upper longitudinal beam, a box girder, a side support, an overhanging rod support, a top frame, a top overhanging rod, a longitudinal support rod, a hanging basket and a pier stud; the lower cross beam and the upper longitudinal beam are welded to form a hanging basket bottom plate, and a steel member is welded on the hanging basket bottom plate to form a side support; a box girder is arranged above the pier stud; two longitudinal support rods are arranged above the box girder, the longitudinal support rods extend out of the box girder, and the hanging basket is placed on the longitudinal support rods; the middle part of the hanging basket is provided with a top frame, the frame is provided with two reserved openings, the reserved openings are matched with the top overhanging rods, convex ribs are arranged in the reserved openings, and the convex ribs are matched with the reserved tooth openings on the top overhanging rods; an external extending rod support is erected at the top of the box girder, and the top external extending rod is arranged on the external extending rod support; the middle part of the longitudinal support rod is welded with a triangular support through profile steel, and the triangular supports at the two sides are connected together through a second counter-pull screw rod to enable the longitudinal support rod at the bottom of the triangular support to form a whole;
the box girder hanging basket suspended casting inner mold fixing system comprises an upper longitudinal beam, a lower cross beam, a first bottom plate, a side plate, an inclined strut and a lateral top plate; the hanging basket is hung on the longitudinal support rod, the upper longitudinal beam and the lower cross beam are welded to form a hanging basket bottom plate, a first bottom plate with a second groove is placed on the hanging basket bottom plate, and a box girder bottom template which is poured in a hanging mode is placed on the second groove; the side plates are spliced on the first bottom plate through screws, first grooves are formed in the side plates and the side supports of the hanging basket, and the inclined supports are inserted into the corresponding first grooves to connect the side plates and the side supports; the top of the side plate is provided with a lateral top plate, the top plate is provided with a transverse screw hole, a hole is drilled in the side surface of a wing plate of the box girder, and the lateral top plate is fixed on the wing plate through a screw; a box girder template is arranged on the outer side of the box girder, and a vertical screw hole is formed at the joint of the lateral top plate and the box girder template to connect the box girder template;
the triangular hanging basket traveling system comprises a longitudinal supporting rod, an L-shaped fixing plate, a groove-shaped block, a sliding wheel and a slideway; the L-shaped fixing plates and the groove blocks are combined into a slideway with a groove and are arranged on the top surface of the box girder, the longitudinal supporting rod with a sliding wheel is arranged in the groove of the groove block, and the L-shaped fixing plates are fixed on two sides of the groove block and the longitudinal supporting rod; the first pair of pulling screws penetrate through screw holes on the L-shaped fixing plate and the longitudinal supporting rod to fix the longitudinal supporting rod on the L-shaped fixing plate;
the auxiliary fixed side die of the hanging basket comprises a side support, a bottom rod, a vertical connecting rod and a side balancing rod; holes are drilled in the wing plates of the box girder, and the vertical connecting rods penetrate through the holes and are fixed by fixing nuts; the utility model discloses a hang basket, including the bottom bar, the bottom bar sets up the reservation groove on the bottom bar, and the side balancing pole passes the balancing pole hole on the collateral branch of hanging the basket, and the side balancing pole inlays the reservation groove of seting up on the bottom bar.
Preferably, the method comprises the following steps: the outer extension rod support is welded with section steel, the section steel is provided with screw holes, and the outer extension rod support is fixed on the top surface of the box girder through screws.
Preferably, the method comprises the following steps: the triangular support consists of a triangular inclined rod and a middle rod piece, and the top of the middle rod piece is provided with a screw rod hole matched with the second counter-pulling screw rod.
Preferably, the method comprises the following steps: screws are arranged in screw holes of a second bottom plate of the L-shaped fixing plate to fix the L-shaped fixing plate, wherein the second bottom plate is a transverse bottom plate connected with the box girder; excavating a screw hole on the side wall of the L-shaped fixing plate; the bottom of the L-shaped fixing plate is provided with a bottom gap which is matched with the groove-shaped block.
Preferably, the method comprises the following steps: the bottom rod is vertical to the vertical connecting rod; the upper end of the vertical connecting rod is provided with a thread matched with the fixing nut.
The construction method of the box girder hanging basket suspension casting system comprises the following steps:
1) prefabricating an L-shaped fixing plate and a groove-shaped block; prefabricating an L-shaped fixing plate, excavating screw holes on a bottom plate of the fixing plate, excavating screw holes on the side wall of the fixing plate, and then cutting off a cuboid at the bottom of the L-shaped fixing plate to form a bottom notch for embedding a groove-shaped block; a groove is dug out in the middle of a cuboid to form a groove-shaped block, and the groove is used as a slideway; the height of the groove-shaped block is the same as that of the bottom gap;
2) prefabricating a longitudinal support rod; prefabricating a cuboid-shaped support rod by using steel, and excavating screw holes in the center of the support rod, wherein the space and the size of the screw holes correspond to those of the screw holes in the fixing plate; then, a sliding wheel is arranged at the bottom of the supporting rod;
3) construction of triangular supports; welding profile steel on a longitudinal supporting rod in an electric welding mode, welding a triangular support at the middle part of the longitudinal supporting rod through the profile steel, and drilling a screw rod hole at the top of a middle rod piece of the triangular support;
4) constructing a walking system; the groove-shaped blocks are arranged on the top surface of the existing box girder, then the longitudinal support rods are placed in the grooves of the groove-shaped blocks, then the L-shaped fixing plates are tightly attached to the longitudinal support rods, screw holes of the L-shaped fixing plates and the longitudinal support rods are aligned, and a first pair of pull screws penetrate through the screw holes and are fixed by nuts; after the L-shaped fixing plate is fixed with the longitudinal supporting rod, screws are driven into the existing box girder along the screw holes in the L-shaped fixing plate, and the L-shaped fixing plate is fixed on the box girder; finally, a second pair of pulling screws penetrate through screw holes in the triangular supports to connect the triangular supports on the two sides into a whole;
5) constructing top external extending rods and external extending rod supports; the outer extension rod support and the top outer extension rod are both made of steel, the outer extension rod support is placed on the top surface of an existing box girder, screws are driven into the box girder along screw holes of profile steel welded on the outer extension rod support, the outer extension rod support is fixed on the top surface of the box girder, then the top outer extension rod is placed on the top surface of the outer extension rod support, and the top outer extension rod is welded above the support through electric welding;
6) hoisting a hanging basket; the hanging basket is lifted to the top surface of the existing box girder by using a crane, then the hanging basket is inserted into the longitudinal support rod at the bottom of the triangular support, and simultaneously the reserved opening on the top frame is inserted into the top extension rod, so that the top extension rod and the longitudinal support rod bear the load of the hanging basket;
7) prefabricating a bottom rod and a vertical connecting rod; the vertical connecting rod and the bottom rod are made of steel and are welded together in an electric welding mode; the end part of the vertical connecting rod is provided with a thread matched with the fixing nut; a reserved groove is arranged on the bottom rod;
8) drilling a wing plate; drilling holes on a wing plate of the box girder by using a drilling machine, and accurately calculating the drilling hole position in advance to enable the drilling hole position to correspond to the vertical connecting rod;
9) hoisting the bottom rod and the vertical connecting rod; the spliced bottom rods are hoisted to wing plates of the existing box girder by using a crane, when the spliced bottom rods quickly reach the wing plates of the box girder, the vertical connecting rods are aligned to the drilled holes, then the vertical connecting rods penetrate through the drilled holes, and finally the vertical connecting rods are fixed on the top surface of the box girder by using nuts;
10) constructing a side balancing pole; a side balancing pole penetrates through a pole hole on a side support of the hanging basket, and the balancing pole is supported in a reserved groove of the bottom pole;
11) constructing a bottom plate; placing a first bottom plate with a groove on a bottom plate of the hanging basket, wherein screw holes are reserved on two sides of the bottom plate;
12) mounting a side plate; mounting the side plate on a first bottom plate, and fixing the bottom plate and the side plate together by using a screw rod; at the moment, the lateral top plate of the side plate is tightly attached to a wing plate of the box girder, then a drilling machine is used for drilling a hole on the wing plate of the box girder, and a screw rod penetrates through a screw rod hole of the side plate and the drilled hole on the wing plate, so that the lateral top plate is fixed on the wing plate;
13) constructing an inclined strut; inserting the inclined support into the grooves on the side support of the side plate and the hanging basket;
14) installing a box girder template; placing a box girder template in the hanging basket, and placing the box girder template in the groove on the first bottom plate; and a through screw hole is dug at the end part of the template, the screw hole corresponds to the vertical screw hole dug by the lateral top plate, and the screw and the lateral top plate can be spliced together by inserting the screw into the screw hole.
The invention has the beneficial effects that:
(1) the longitudinal support rod and the top extension rod designed by the invention can provide enough support force for the hanging basket, and in addition, the top extension rod is provided with the tooth openings which correspond to the convex ribs on the reserved openings, so that the connection between the hanging basket and the extension rod can be reinforced.
(2) The side plates of the internal mold fixing system are fixed on the bottom plate, the hanging basket and the existing box girder by using the inclined struts and the screws, and the box girder template and the side plates are fixed by using the screws, so that the side inclination of the box girder template is prevented; the grooves are excavated on the bottom plate to place the box girder template, so that the box girder template can be prevented from shaking.
(3) The balance rod designed by the invention can balance the stability of the cradle on one hand, and can transmit a part of load on the cradle to the bottom rod along the balance rod on the other hand, and the load on the bottom rod is transmitted to the existing box girder along the vertical connecting rod and finally transmitted to the pier column at the bottom of the box girder.
(4) The hanging basket walking system designed by the invention can move the longitudinal supporting rod, namely the hanging basket, by dismantling the counter-pull screw rod on the L-shaped fixing plate, and after the hanging basket walking system moves to a proper position, the L-shaped fixing plate is spliced to fix the longitudinal supporting rod.
Drawings
FIG. 1 is an overall schematic view of a box girder hanging basket suspension casting system;
FIG. 2 is a schematic view of the triangular cradle system of FIG. 1;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a cross-sectional view of the top outrigger of FIG. 2;
FIG. 6 is a schematic illustration of the outrigger support of FIG. 2;
figure 7 is a schematic view of the inner mold fixation system of figure 1;
FIG. 8 is a side view of FIG. 7;
FIG. 9 is a top view of FIG. 7;
FIG. 10 is a schematic side panel view of FIG. 7;
FIG. 11 is a schematic view of the cradle walking system of FIG. 1;
FIG. 12 is a schematic view of the L-shaped retaining plate of FIG. 11;
FIG. 13 is a schematic structural diagram of an L-shaped fixing plate (where a is a top view of the L-shaped fixing plate and b is a front view of the L-shaped fixing plate);
FIG. 14 is a schematic view of the triangular support of FIG. 11;
FIG. 15 is a schematic view of the L-shaped fixing plate and the slot block of FIG. 11;
FIG. 16 is a schematic view of the auxiliary fixed side mold of FIG. 1;
FIG. 17 is a top view of FIG. 16;
fig. 18 is a schematic view of the bottom bar stock groove of fig. 16.
Description of reference numerals: 1-lower cross beam; 2-upper stringer; 3, a box girder; 4-side support; 5-a second pair of pulling screws; 6, supporting by an overhanging rod; 7-a top frame; 8, reserving a port; 9-ribs; 10-top extension rod; 11-reserving a tooth mouth; 12-longitudinal support bar; 13-hanging basket; 14-a triangular diagonal rod; 15-pier stud; 16 — a first base plate; 17-side plate; 18-wing plate; 19-a second recess; 20-inclined strut; 21-a first groove; 22-screw rod; 23-lateral roof panel; 24-screw hole; 25-screw holes; 26-bottom notch; 27-a side wall; 28-L shaped fixation plate; 29 — a second base plate; 30-triangular support; 31-slot type block; 32-a riding wheel; 33-a screw; 34-a slideway; 35-bottom bar; 36-vertical connecting rod; 37-fixing nut; 38-balance bar hole; 39-a preformed groove; 40-side balancing pole; 41-box girder template; 42-first pair of pull screws.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
The box girder hanging basket suspension casting system comprises a triangular hanging basket system, a box girder hanging basket suspension casting inner mold fixing system, a triangular hanging basket traveling system and a hanging basket auxiliary fixed side mold.
The triangular hanging basket system comprises a lower cross beam 1, an upper longitudinal beam 2, a box girder 3, side supports 4, an overhanging rod support 6, a top frame 7, a top overhanging rod 10, a longitudinal support rod 12, a hanging basket 13 and a pier stud 15; the lower cross beam 1 and the upper longitudinal beam 2 are welded to form a hanging basket bottom plate, and a steel member is welded on the hanging basket bottom plate to form a side support 4; a box girder 3 is arranged above the pier stud 15; two longitudinal support rods 12 are arranged above the box girder 3, the longitudinal support rods 12 extend out of the box girder, and the hanging basket 13 is placed on the longitudinal support rods 12; a top frame 7 is arranged in the middle of the hanging basket 13, two reserved openings 8 are formed in the frame, the reserved openings 8 are matched with the top outward extending rod 10, convex ribs 9 are arranged in the reserved openings 8, and the convex ribs 9 are matched with the reserved tooth openings 11 in the top outward extending rod 10; erecting an overhanging bar support 6 on the top of the box girder 3, then placing a top overhanging bar 10 on the overhanging bar support 6, and finally inserting the top overhanging bar 10 into a reserved opening 8 on the top frame 7, wherein the top overhanging bar 10 and the longitudinal support bar 12 can provide enough support for the hanging basket 13 through the combined action of the top overhanging bar 10 and the longitudinal support bar 12; the middle part of the longitudinal support rod 12 is welded with a triangular support through section steel, and the triangular supports at the two sides are connected together through a second counter-pull screw rod 5 to enable the longitudinal support rod 12 at the bottom to form a whole, so that the stress is more uniform. The overhanging bar support 6 is welded with section steel, the section steel is provided with a screw hole 25, and the overhanging bar support 6 is fixed on the top surface of the box girder 3 through screws. The triangular support consists of a triangular inclined rod 14 and a middle rod piece, and the top of the middle rod piece is provided with a screw hole matched with the second counter-pulling screw 5.
The box girder hanging basket suspended casting inner mold fixing system comprises an upper longitudinal beam 1, a lower cross beam 2, a first bottom plate 16, a side plate 17, an inclined strut 20 and a lateral top plate 23; a box girder 3 is arranged above the pier stud 15, and wing plates 18 are arranged on two sides of the box girder 3; the hanging basket 13 is hung on the longitudinal support rod 12, the upper longitudinal beam 1 and the lower cross beam 2 are welded to form a hanging basket bottom plate, a first bottom plate 16 with a second groove 19 is placed on the hanging basket bottom plate, and a box girder bottom template which is poured in a hanging mode is placed on the second groove 19, so that the template can be prevented from deviating; the side plate 17 is spliced on the first bottom plate 16 through a screw, first grooves 21 are formed in the side plate 17 and the side support 4 of the hanging basket, and the inclined support 20 is inserted into the corresponding first groove 21 to connect the side plate 17 and the side support 4, so that the side inclination of the side plate can be effectively prevented; a lateral top plate 23 is arranged at the top of the side plate 17, a transverse screw rod hole 24 is arranged on the lateral top plate 23, a hole is correspondingly drilled on the side surface of the wing plate 18 of the box girder 3, and the lateral top plate 23 is fixed on the wing plate 18 through a screw rod 22; the box girder template 41 is arranged on the outer side of the box girder 3, and the vertical screw hole is formed at the joint of the lateral top plate 23 and the box girder template 41 to connect the box girder template 41, so that the box girder template can be effectively fixed, and the box girder template is prevented from inclining laterally. The screw holes shown in fig. 7 are vertical bolt holes for fixing the box girder template 41, and the screws 22 are transverse screws for connecting the lateral top plate 23 and the wing plate 18.
The triangular hanging basket walking system comprises a longitudinal support rod 12, an L-shaped fixing plate 28, a groove-shaped block 31, a sliding wheel 32 and a slideway 34; the L-shaped fixing plate 28 and the groove-shaped block 31 are combined into a slideway 34 with a groove and are arranged on the top surface of the box girder 3, the longitudinal supporting rod 12 with a sliding wheel 32 is arranged in the groove of the groove-shaped block 31, and the L-shaped fixing plate 28 is fixed on two sides of the groove-shaped block 31 and the longitudinal supporting rod 12; the first pair of pull screws 42 penetrate through the screw holes 24 on the L-shaped fixing plate 28 and the longitudinal support rod 12 to fix the longitudinal support rod 12 on the L-shaped fixing plate 28, so that the longitudinal support rod is prevented from shaking to cause instability of the hanging basket; when the hanging basket 13 needs to move forward, the first pair of pull screws 42 is removed, then the longitudinal support rod 12 is pushed in the slide way to move forward, then the L-shaped fixing plate 28 is arranged at the position corresponding to the screw hole 24 of the support rod and is fixed by the first pair of pull screws 42, and then the L-shaped fixing plate 28 at the front section is removed. A screw 33 is arranged in the screw hole 25 of the second bottom plate 29 of the L-shaped fixing plate 28 to fix the L-shaped fixing plate 28; a screw hole 24 is dug on the side wall 27 of the L-shaped fixing plate 28; the bottom of the L-shaped fixing plate is provided with a bottom notch 26, and the bottom notch 26 is matched with the groove-shaped block 31.
The box girder hanging basket suspended casting auxiliary fixed side die comprises a side support 4, a bottom rod 35, a vertical connecting rod 36 and a side balancing rod 40; a box girder 3 is arranged above the pier stud 15, a longitudinal support rod 12 is arranged on the box girder 3, a hanging basket is placed on the longitudinal support rod 12, a lower cross beam 1 and an upper longitudinal beam 2 are welded to form a hanging basket bottom plate, and a side support 4 is arranged on the hanging basket bottom plate; holes are drilled in the wing plates 18 of the box girder 3, and the vertical connecting rods 36 penetrate through the holes and are fixed by fixing nuts 37; the bottom rod 35 is made of steel and is welded with the vertical connecting rod 36, a reserved groove 39 is formed in the bottom rod 35, the side balancing rod 40 penetrates through a balancing rod hole 38 in the side support 4 of the hanging basket, and the side balancing rod 40 is embedded in the reserved groove 39 formed in the bottom rod 35; the bottom rod 35 is fixed on the wing plate 18 of the box girder 3, the balance rod penetrates through the side support 4 of the hanging basket and falls on the bottom rod 35, so that part of load of the hanging basket is transferred to the bottom rod 35, the bottom rod 35 transfers the load to the box girder 3 through the vertical connecting rod 36, and the stability of the hanging basket is kept. The bottom rod 35 is perpendicular to the vertical connecting rod 36; the upper end of the vertical connecting rod 36 is provided with a thread matching with the fixing nut 37.
The construction method of the box girder hanging basket suspension casting system comprises the following steps:
(1) and prefabricating the L-shaped fixing plate and the groove-shaped blocks. Prefabricating an L-shaped fixing plate 28, excavating screw holes 25 on a bottom plate of the fixing plate, excavating screw holes 24 on the side wall of the fixing plate, and then cutting off a cuboid at the bottom of the L-shaped fixing plate to form a bottom notch 26 for embedding a groove-shaped block 31; a groove is formed in the middle of a rectangular parallelepiped to form a groove-shaped block 31, and the groove serves as a slide. The height of the channel block is the same as the height of the undercut 26.
(2) The longitudinal support bar is prefabricated. The support rods in the shape of a cuboid are prefabricated by steel, and screw holes 24 are dug in the centers of the support rods, and the space and the size of the holes correspond to those of the screw holes in the fixing plate. A runner wheel 32 is then mounted on the bottom of the support bar.
(3) And (5) triangular support construction. The section steel is welded to the longitudinal support rods 12 by electric welding, and a screw hole is drilled in the top of the middle rod of the triangular supports 30.
(4) And (5) constructing a walking system. The groove-shaped block 31 is arranged on the top surface of the existing box girder, then the longitudinal support rod 12 is arranged in the groove of the groove-shaped block, then the L-shaped fixing plate 28 is tightly attached to the longitudinal support rod, the screw holes of the two are aligned, the counter-pulling screw rod penetrates through the screw hole and is fixed by the nut; after the L-shaped fixing plate is fixed with the longitudinal supporting rod, the screws 33 are driven into the existing box girder along the screw holes 25 on the L-shaped fixing plate, so that the L-shaped fixing plate is fixed on the box girder. And finally, penetrating the screw holes on the triangular supports 30 by using a second pair of pull screws 5 to connect the triangular supports on the two sides into a whole.
(5) And (5) supporting construction of the top external extending rod and the external extending rod. The outrigger support 6 and the top outrigger 10 are all made of steel, the outrigger support is placed on the top surface of the existing box girder, then screws are driven into the box girder 3 along the screw holes 25 of the welded profile steel on the outrigger support, the outrigger support is fixed on the top surface of the box girder, then the top outrigger is placed on the top surface of the outrigger support, and the top outrigger is welded above the support by electric welding.
(6) And (5) hanging the cradle. The hanging basket 13 is lifted to the top surface of the existing box girder by a crane, then the hanging basket is slowly inserted into the bottom longitudinal support rod 12, and meanwhile, the reserved opening 8 on the top frame 7 is inserted into the top extension rod 10, so that the top extension rod and the longitudinal support rod bear the load of the hanging basket.
(7) The bottom rod and the vertical connecting rod are prefabricated. The vertical connecting rod 36 and the bottom rod 35 are made of steel materials and are welded together in an electric welding mode. The end part of the vertical connecting rod is provided with a thread which can be matched with the fixing nut 37; and a pre-groove 39 is provided in the bottom bar.
(8) Drilling the wing plate. The wing plate 18 of the box girder is drilled with a drill, and the drilling position needs to be accurately calculated in advance so that the drilling position corresponds to the vertical connecting rod 36.
(9) And hoisting the bottom rod and the vertical connecting rod. The spliced bottom rods are hoisted to wing plates of the existing box girder by using a crane, when the spliced bottom rods quickly reach the wing plates of the box girder, the vertical connecting rods are slowly aligned to drill holes, then the vertical connecting rods penetrate through the drilled holes, and finally the vertical connecting rods are fixed on the top surface of the box girder by using nuts.
(10) And constructing a side balancing pole. And (3) the side balancing pole 40 passes through the pole hole on the side support of the cradle, and the balancing pole is supported in the preformed groove of the bottom pole.
(11) And (5) constructing the bottom plate. A first bottom plate 16 with a groove is placed on the bottom plate of the hanging basket, and screw holes are reserved on two sides of the bottom plate at intervals.
(12) And (6) mounting the side plates. The side plate 17 is mounted on the first bottom plate 16, and the bottom plate and the side plate are fixed together by a screw. At this time, the side roof panel 23 of the side panel should be closely attached to the wing panel 18 of the box girder, and then a drill is used to drill a hole in the wing panel of the box girder, and a screw is passed through the screw hole of the side panel and the drilled hole in the wing panel, so that the side roof panel is fixed to the wing panel.
(13) And (5) constructing the inclined strut. The diagonal brace 20 is inserted into the side plate 17 and the groove on the side support 4 of the cradle.
(14) And (5) installing the box girder template. The box girder template 41 is placed in the hanging basket 13 and is placed in the groove on the first bottom plate 16. And the end part of the template is excavated with a through screw hole which corresponds to a vertical screw hole excavated by the lateral top plate, and the screw hole and the vertical screw hole can be spliced together by inserting the screw into the screw hole, so that the template is prevented from being inclined laterally.
Claims (4)
1. The box girder hanging basket suspension casting system is characterized by comprising a triangular hanging basket system, a box girder hanging basket suspension casting inner mold fixing system, a triangular hanging basket traveling system and a hanging basket auxiliary fixing side mold;
the triangular hanging basket system comprises a lower cross beam (1), an upper longitudinal beam (2), a box girder (3), side supports (4), an overhanging rod support (6), a top frame (7), a top overhanging rod (10), a longitudinal support rod (12), a hanging basket (13) and a pier stud (15); the lower cross beam (1) and the upper longitudinal beam (2) are welded to form a hanging basket bottom plate, and a steel member is welded on the hanging basket bottom plate to form a side support (4); a box girder (3) is arranged above the pier stud (15); two longitudinal support rods (12) are arranged above the box girder, the longitudinal support rods (12) extend out of the box girder, and the hanging basket (13) is placed on the longitudinal support rods (12); a top frame (7) is arranged in the middle of the hanging basket (13), two reserved openings (8) are formed in the frame, the reserved openings (8) are matched with the top outward extending rod (10), convex ribs (9) are arranged in the reserved openings (8), and the convex ribs (9) are matched with reserved tooth openings (11) in the top outward extending rod (10); an outer extending rod support (6) is erected at the top of the box girder (3), profile steel is welded on the outer extending rod support (6), a screw hole (25) is formed in the profile steel, and the outer extending rod support (6) is fixed to the top surface of the box girder (3) through a screw; the top external extension rod (10) is arranged on the external extension rod support (6); triangular supports (30) are welded in the middle of the longitudinal support rod (12) through profile steel, each triangular support (30) consists of a triangular inclined rod (14) and a middle rod piece, screw rod holes matched with the second counter-pulling screw rods (5) are formed in the top of the middle rod piece, and the triangular supports on the two sides are connected together through the second counter-pulling screw rods (5) to enable the longitudinal support rod (12) at the bottom of each triangular support to form a whole;
the box girder hanging basket suspended casting inner mold fixing system comprises an upper longitudinal beam (2), a lower cross beam (1), a first bottom plate (16), a side plate (17), an inclined strut (20) and a lateral top plate (23); the hanging basket (13) is hung on the longitudinal support rod (12), the upper longitudinal beam (2) and the lower cross beam (1) are welded to form a hanging basket bottom plate, a first bottom plate (16) with a second groove (19) is placed on the hanging basket bottom plate, and the box girder bottom template which is poured in a hanging mode is placed on the second groove (19); the side plate (17) is spliced on the first bottom plate (16) through a screw, first grooves (21) are formed in the side plate (17) and the side supports (4) of the hanging basket, and the inclined supports (20) are inserted into the corresponding first grooves (21) to connect the side plate (17) and the side supports (4); a lateral top plate (23) is arranged at the top of the side plate (17), a transverse screw rod hole (24) is formed in the top plate, a hole is drilled in the side face of the wing plate (18) of the box girder (3), and the lateral top plate (23) is fixed on the wing plate (18) through a screw rod (22); a box girder template (41) is arranged on the outer side of the box girder (3), and a vertical screw hole is formed at the joint of the lateral top plate (23) and the box girder template (41) to connect the box girder template (41);
the triangular hanging basket walking system comprises a longitudinal support rod (12), an L-shaped fixing plate (28), a groove-shaped block (31), a sliding wheel (32) and a slideway (34); the L-shaped fixing plate (28) and the groove-shaped block (31) are combined into a slideway (34) with a groove and are arranged on the top surface of the box girder (3), the longitudinal supporting rod (12) with a sliding wheel (32) is arranged in the groove of the groove-shaped block (31), and the L-shaped fixing plate (28) is fixed on two sides of the groove-shaped block (31) and the longitudinal supporting rod (12); the first pair of pulling screws (42) pass through screw holes (24) on the L-shaped fixing plate (28) and the longitudinal supporting rod (12) to fix the longitudinal supporting rod (12) on the L-shaped fixing plate (28);
the auxiliary fixed side die of the hanging basket comprises a side support (4), a bottom rod (35), a vertical connecting rod (36) and a side balancing rod (40); holes are drilled in wing plates (18) of the box girder (3), and a vertical connecting rod (36) penetrates through the holes and is fixed by a fixing nut (37); the bottom rod (35) is welded with the vertical connecting rod (36), a preformed groove (39) is formed in the bottom rod (35), the side balancing rod (40) penetrates through a balancing rod hole (38) in the side support (4) of the hanging basket, and the side balancing rod (40) is embedded in the preformed groove (39) formed in the bottom rod (35).
2. A box girder hanging basket suspension casting system according to claim 1, wherein a screw (33) is provided in a screw hole (25) of a second bottom plate (29) of the L-shaped fixing plate (28) to fix the L-shaped fixing plate (28), wherein the second bottom plate (29) is a lateral bottom plate connected with the box girder (3); a screw hole (24) is dug on the side wall (27) of the L-shaped fixing plate (28); the bottom of the L-shaped fixing plate is provided with a bottom notch (26), and the bottom notch (26) is matched with the groove-shaped block (31).
3. A box girder cradle suspension casting system according to claim 1, characterized in that the bottom bar (35) and the vertical connecting bar (36) are perpendicular to each other; the upper end of the vertical connecting rod (36) is provided with a thread matched with the fixing nut (37).
4. A construction method of a box girder cradle suspension casting system according to claim 1, comprising the steps of:
1) prefabricating an L-shaped fixing plate and a groove-shaped block; prefabricating an L-shaped fixing plate (28), excavating a screw hole (25) on a bottom plate of the fixing plate, excavating a screw hole (24) on the side wall of the fixing plate, and then cutting off a cuboid at the bottom of the L-shaped fixing plate to form a bottom notch (26) for embedding a groove-shaped block (31); a groove is dug out in the middle of a cuboid to form a groove-shaped block (31), and the groove is used as a slideway; the height of the groove-shaped block is the same as that of the bottom gap;
2) prefabricating a longitudinal support rod; prefabricating a cuboid-shaped support rod by using steel, and excavating screw holes (24) in the center of the support rod, wherein the space and the size of the holes correspond to those of the screw holes in the fixing plate; then a sliding wheel (32) is arranged at the bottom of the supporting rod;
3) construction of triangular supports; welding profile steel on a longitudinal support rod (12) by an electric welding mode, welding a triangular support (30) at the middle part of the longitudinal support rod (12) through the profile steel, and drilling a screw rod hole at the top of a middle rod piece of the triangular support;
4) constructing a walking system; the channel block (31) is arranged on the top surface of the existing box girder, then the longitudinal support rod (12) is arranged in the groove of the channel block, then the L-shaped fixing plate (28) is tightly attached to the longitudinal support rod, the screw holes of the two are aligned, and the first pair of pulling screws (42) passes through the screw holes and is fixed by nuts; after the L-shaped fixing plate is fixed with the longitudinal supporting rod, a screw (33) is driven into the existing box girder along a screw hole (25) on the L-shaped fixing plate, so that the L-shaped fixing plate is fixed on the box girder; finally, a second pair of pulling screws (5) penetrates through screw holes on the triangular supports (30) to connect the triangular supports on the two sides into a whole;
5) constructing top external extending rods and external extending rod supports; the outer extending rod support (6) and the top outer extending rod (10) are both made of steel, the outer extending rod support is placed on the top surface of an existing box girder, screws are driven into the box girder (3) along screw holes (25) of profile steel welded on the outer extending rod support, the outer extending rod support is fixed on the top surface of the box girder, then the top outer extending rod is placed on the top surface of the outer extending rod support, and then the top outer extending rod is welded above the support through electric welding;
6) hoisting a hanging basket; a hanging basket (13) is lifted to the top surface of the existing box girder by using a crane, then the hanging basket is inserted into a longitudinal support rod (12) at the bottom of the triangular support, and meanwhile, a reserved opening (8) on a top frame (7) is inserted into a top extension rod (10), so that the top extension rod and the longitudinal support rod bear the load of the hanging basket;
7) prefabricating a bottom rod and a vertical connecting rod; the vertical connecting rod (36) and the bottom rod (35) are made of steel materials and are welded together in an electric welding mode; the end part of the vertical connecting rod is provided with a thread matched with the fixing nut (37); a reserve groove (39) is arranged on the bottom rod;
8) drilling a wing plate; drilling holes on a wing plate (18) of the box girder by using a drilling machine, and accurately calculating the drilling hole position in advance to enable the drilling hole position to correspond to the vertical connecting rod (36);
9) hoisting the bottom rod and the vertical connecting rod; the spliced bottom rods are hoisted to wing plates of the existing box girder by using a crane, when the spliced bottom rods quickly reach the wing plates of the box girder, the vertical connecting rods are aligned to the drilled holes, then the vertical connecting rods penetrate through the drilled holes, and finally the vertical connecting rods are fixed on the top surface of the box girder by using nuts;
10) constructing a side balancing pole; a lateral balancing pole (40) penetrates through a pole hole on a side support of the cradle, and the balancing pole is supported in a reserved groove of the bottom pole;
11) constructing a bottom plate; a first bottom plate (16) with a groove is placed on the bottom plate of the hanging basket, and screw holes are reserved on two sides of the bottom plate;
12) mounting a side plate; mounting a side plate (17) on a first bottom plate (16), and fixing the bottom plate and the side plate together by using a screw rod; at the moment, a lateral top plate (23) of the side plate is tightly attached to a wing plate (18) of the box girder, then a drilling machine is used for drilling a hole on the wing plate of the box girder, and a screw rod penetrates through a screw rod hole of the side plate and the drilled hole on the wing plate, so that the lateral top plate is fixed on the wing plate;
13) constructing an inclined strut; inserting the inclined strut (20) into the side plate (17) and a groove on the side support (4) of the hanging basket;
14) installing a box girder template; placing a box girder template (41) in the hanging basket (13), and placing the box girder template in a groove on the first bottom plate (16); and a through screw hole is dug at the end part of the template, the screw hole corresponds to the vertical screw hole dug by the lateral top plate, and the screw and the lateral top plate can be spliced together by inserting the screw into the screw hole.
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| EP0930408A1 (en) * | 1998-01-16 | 1999-07-21 | Domesle Stahlverschalungs- GmbH | Formwork for casting corbelled out concrete elements |
| CN201526014U (en) * | 2009-08-27 | 2010-07-14 | 孙广喜 | Internal cable-stayed bailey cradle |
| CN101929130B (en) * | 2010-09-19 | 2012-01-04 | 中铁十二局集团有限公司 | Hanging basket device for closure construction of continuous box girders |
| CN104631324A (en) * | 2014-12-17 | 2015-05-20 | 上海市基础工程集团有限公司 | Front supporting point hanging basket construction process used for inclined pull bridge super-wide flange girder |
| CN206693071U (en) * | 2017-04-13 | 2017-12-01 | 浙江百辰食品科技有限公司 | A kind of building machinery engineering Hanging Basket |
| CN210658057U (en) * | 2019-04-30 | 2020-06-02 | 安徽省公路桥梁工程有限公司 | Hanging basket suspension casting system for box girder |
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