CN113250088B - Construction method of large hanging basket of large-span wide-width cast-in-place box girder in complex water area - Google Patents
Construction method of large hanging basket of large-span wide-width cast-in-place box girder in complex water area Download PDFInfo
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- CN113250088B CN113250088B CN202110544250.1A CN202110544250A CN113250088B CN 113250088 B CN113250088 B CN 113250088B CN 202110544250 A CN202110544250 A CN 202110544250A CN 113250088 B CN113250088 B CN 113250088B
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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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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention relates to a construction method of a large hanging basket of a large-span wide cast-in-place box girder in a complex water area, which comprises the following steps: 1) Construction preparation; 2) Preparing a hanging basket component; 3) Connecting the cast sections of the box girders with hanging baskets; 4) Arranging a suspension support system; 5) Erecting a cast-in-place box girder template; 6) And (5) laying a rain-proof system. The beneficial effects of the invention are: the hanging basket comprises an upper longitudinal supporting beam, an upper transverse supporting beam, a lower longitudinal supporting beam, a support upright post and a support inclined post, and the components are fastened through a rotating shaft, a bolt and the like, so that the efficient assembly of the hanging basket is realized; set up built-in stiffening plate in the section has been watered to the case roof beam, can play the effect of pressure dispersion and node reinforcing, indulge in promoting and prop the roof beam and indulge down and prop the roof beam and lay the steadiness, reduce the damage of hanging the basket structure to the section has been watered to the case roof beam.
Description
Technical Field
The invention relates to a construction method of a large hanging basket of a large-scale wide-span cast-in-place box beam in a complex water area, which can effectively reduce the difficulty of hanging basket arrangement, improve the arrangement quality and performance of the hanging basket and improve the field construction efficiency and is suitable for the construction engineering of the hanging basket of the wide-scale cast-in-place box beam.
Background
When the cast-in-place box girder is constructed, in order to reduce the difficulty of setting up a support system, the construction of a hanging basket is usually adopted. For the pouring construction of large-scale hanging baskets, the stability and the bearing performance of a hanging basket system are difficult points of field control. In the construction process, how to reduce the difficulty of arranging the hanging baskets, improve the arrangement quality and performance of the hanging baskets, improve the field construction efficiency and the like is often the key point of field construction control.
In the prior art, a construction method for a cast-in-place box girder cradle is provided, which is characterized in that: the length of this supporting station in end basket longeron direction is for waiting to water roof beam body length and construction operation platform length sum, every channel-section steel below is provided with a diagonal bracing, this diagonal bracing welding is between channel-section steel bottom surface middle part and crossbeam gallows, one deck bamboo offset plate has been laid above the supporting station, the right-hand member of supporting station is followed outward and is gone up the equipartition welding and have the rail guard. Although the construction method solves the problem of high construction cost and improves the mechanical stability to a certain extent, the construction method has improvements in the aspects of reducing the difficulty of the arrangement of the hanging baskets, improving the arrangement quality and performance of the hanging baskets, improving the field construction efficiency and the like.
In view of this, in order to effectively reduce the difficulty of arranging the baskets, improve the arrangement quality and performance of the baskets, and improve the field construction efficiency, the invention of the construction method of the large-scale baskets of the large-scale cast-in-place box beams in the complicated water areas, which can not only reduce the difficulty of arranging the baskets, improve the arrangement quality and performance of the baskets, but also improve the field construction efficiency, is urgently needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a construction method of a large hanging basket of a large-scale cast-in-place box beam in a large-scale complex water area, which can not only reduce the difficulty of the arrangement of the hanging basket, but also improve the arrangement quality and performance of the hanging basket and improve the field construction efficiency.
The construction method of the large hanging basket of the large-span wide-width cast-in-place box girder in the complex water area comprises the following construction steps:
1) Construction preparation: carrying out concrete pouring construction on the poured section of the box girder, and preparing materials and devices required by the construction;
2) Preparing a hanging basket component: the hanging basket system comprises an upper longitudinal support beam, an upper transverse support beam, a lower longitudinal support beam, a support upright post and a support inclined post; the strut upright post is connected with the strut inclined post through a strut end shaft and is vertically welded and connected with the upper longitudinal strut beam; the strut inclined column is connected with the upper longitudinal support beam through a bolt; a rainwater collection box is arranged at the top end of the strut upright post, and a rolling machine is arranged on the rainwater collection box facing the side of the hanging basket;
3) The box girder poured section hanging basket is connected: arranging an upper anchoring bolt and a lower anchoring bolt at the position of a built-in reinforcing plate of the poured section of the box girder, sequentially arranging a supporting beam base plate and an upper longitudinal supporting beam on the upper surface of the poured section of the box girder, and arranging a lower longitudinal supporting beam on the lower surface of a lower transverse supporting beam below the poured section of the box girder; the upper anchoring bolt is connected with the upper cross beam on the upper part of the upper longitudinal support beam through a bolt, the bottom end of the lower anchoring bolt is provided with a support beam hanging groove, and the lower longitudinal support beam is embedded into the support beam hanging groove; arranging anchor bolt inner connecting plates at the joints of the upper anchor bolt and the lower anchor bolt with the cast sections of the box girder, and connecting the anchor bolt inner connecting plates by welding; longitudinally laying a movable guide rail along the poured section of the box girder, and connecting a bracket roller at the lower part of the upper longitudinal support girder with the movable guide rail; enabling the supporting beam hanger rod to penetrate through the flange plate of the poured section of the box girder, and enabling two ends of the supporting beam hanger rod to be firmly connected with the upper transverse supporting beam and the lower longitudinal supporting beam respectively;
4) Arranging a suspension support system: the strut upright post and the strut inclined post are respectively and firmly connected with the upper longitudinal support beam, and a support counter-pressure body is arranged on the upper longitudinal support beam; a supporting beam hanging rod is arranged between the upper longitudinal supporting beam and the lower longitudinal supporting beam;
5) Erecting a cast-in-place box girder template: a built-in cross beam is arranged in the poured section of the box girder, and a cross beam pushing body, a cross support vertical plate and a built-in support plate are sequentially arranged at the end, away from the hanging basket, of the built-in cross beam; a rotating support rod is arranged between the cross brace vertical plate and the built-in support plate, so that two ends of the rotating support rod are respectively connected with the cross brace vertical plate and the built-in support plate through support rod end hinges, and a vertical jacking body is arranged between the opposite built-in support plates; a beam control body is arranged between the built-in beam and the box girder cast section, and a roller control body and a built-in roller are arranged on the side, facing the box girder cast section, of the built-in beam; the upper surface of the lower cross-bracing beam is provided with a template bracing beam, a steel frame suspender is arranged between the upper cross-bracing beam and the section steel strut, the lower surface of the section steel strut is provided with a strut connector, the position of the section steel strut is controlled by combining the steel frame suspender and the strut connector, the spatial position of the outer die of the box girder is controlled by combining the template bracing beam and the section steel strut, and a box girder reinforcement cage is bound; an inner mold supporting rod and an inner mold control body are arranged at the overhanging section of the built-in cross beam, and an inner mold supporting pressing plate is arranged at the inner side of the box girder inner mold, so that the inner mold supporting pressing plates at two ends of the inner mold control body are connected with inner mold connecting ribs of the box girder inner mold; the lower part of the upper longitudinal supporting beam and the upper part of the lower longitudinal supporting beam are sequentially provided with a counter-force supporting plate and a template control body facing the poured section side of the box girder, the template control body is firmly connected with a box girder end mold at the end part of the box girder internal mold, and the template control body applies a top pressure to the box girder end mold;
6) Laying a rain-proof system: a stay bar positioning body is arranged at the overhanging end of the upper longitudinal support beam, and a cord fabric transverse stay bar is arranged between the adjacent stay bar positioning bodies; a rolling connecting shaft is arranged at the end part of the rolling rope, and is connected with the rainproof cord fabric and the rolling and spreading position control pipe, so that the top end of the rolling and spreading position control pipe is communicated with a rainwater collecting box; the rain-proof cord fabric is driven to rotate and lay through the cord fabric transverse stay bar by collecting and storing rain water through the rain water collecting box and filling water into the rolling and laying position control pipe.
Preferably, the method comprises the following steps: step 2) the upper longitudinal supporting beam, the upper transverse supporting beam, the lower longitudinal supporting beam, the strut upright post and the strut inclined post are all formed by rolling profile steel; the end shaft of the support column adopts a bolt rotating shaft; the rainwater collection box is formed by rolling steel plates, and the cross section of the rainwater collection box is U-shaped.
Preferably, the method comprises the following steps: step 3) the poured section of the box girder is made of reinforced concrete materials, holes connected with an upper anchor bolt and a lower anchor bolt are respectively arranged on a top plate and a bottom plate of the poured section of the box girder, and a hole connected with a beam supporting hanger rod is arranged on a flange plate of the poured section of the box girder; the built-in reinforcing plate is formed by rolling a steel plate and is welded with the steel reinforcement cage of the poured section of the box girder.
Preferably, the method comprises the following steps: and 4) adopting a sand bag or a concrete precast block as the support counter pressure body.
Preferably, the method comprises the following steps: step 5) the built-in cross beam is formed by rolling a steel plate and is connected with the box girder internal mold through an internal mold stay bar; the section steel strut is formed by welding angle steels, a template bottom supporting plate is arranged at the joint of the section steel strut and the outer box girder, a strut baffle is arranged on the lower surface of the section steel strut, and a strut control body is arranged between the section steel strut and the lower cross-bracing beam; the strut connecting body is formed by rolling a steel plate, the cross section of the strut connecting body is in a right-angled triangle shape, a hole for a steel frame suspender to penetrate through is preset on the strut connecting body, and the strut connecting body is welded and connected with the section steel strut; the cross beam control body is composed of a screw and a bolt, and a position control inner connecting plate is arranged at the joint surface of the cross beam control body and the poured section of the box girder; the roller position control body adopts a hydraulic jack.
Preferably, the method comprises the following steps: step 6) the rolling and spreading position control pipe is a rubber pipe, one end of the rolling and spreading position control pipe is closed and is connected with the rolling and pulling connecting shaft, the other end of the rolling and spreading position control pipe is communicated with a water inlet at the rainwater collecting box, and the side surface of the rolling and spreading position control pipe is connected with the rainproof cord fabric in a sticking mode; one end of the winding and pulling rope is connected with the winding and pulling connecting shaft, and the other end of the winding and pulling rope is connected with the winding and pulling machine; the rainproof cord fabric is formed by cutting a rubber sheet or a geomembrane, the top end of the rainproof cord fabric is connected with the rainwater collection box in a sticking mode, and the other end of the rainproof cord fabric is connected with the rolling connecting shaft in a rotating mode.
The beneficial effects of the invention are:
(1) The hanging basket comprises an upper longitudinal supporting beam, an upper transverse supporting beam, a lower longitudinal supporting beam, a supporting frame upright post and a supporting frame inclined post, and the components are fastened through a rotating shaft, a bolt and the like, so that the efficient assembly of the hanging basket is realized.
(2) Set up built-in stiffening plate in the section has been watered to the case roof beam, can play the effect of pressure dispersion and node reinforcing, indulge on promoting and prop the roof beam and indulge down and prop the roof beam and lay the steadiness in the time, reduce and hang the damage that basket structure watered the section to the case roof beam.
(3) The built-in crossbeam is arranged in the poured section of the box girder, the crossbeam pushing body, the cross-brace vertical plate and the built-in support plate are sequentially arranged at the end, deviating from the hanging basket, of the built-in crossbeam, and the crossbeam control body, the roller control body and the built-in roller are arranged between the poured section of the built-in crossbeam and the box girder, so that quick jacking fixation and self-balancing movement of the built-in crossbeam can be realized.
(4) The rolling and pulling connecting shaft is connected with the rainproof cord fabric and the rolling and spreading position control pipe, the top end of the rolling and spreading position control pipe is communicated with the rainwater collecting box, and the rainwater collecting box can flush the rolling and spreading position control pipe to drive the rainproof cord fabric to be spread, so that the difficulty of the rolling and spreading construction of the rainproof cord fabric is reduced.
Drawings
FIG. 1 is a construction flow chart of a large hanging basket of a large-span wide-width cast-in-place box girder in a complex water area;
FIG. 2 is a schematic view of a connection structure of a hanging basket at a poured section of a box girder;
FIG. 3 is a schematic view of a hanging basket connecting structure at the overhanging section of the box girder;
fig. 4 is a longitudinal section view of the overall arrangement structure of the hanging basket.
Description of the reference numerals: 1, mounting a longitudinal supporting beam; 2-upper cross beam; 3-lower cross bracing beam; 4-lower longitudinal supporting beam; 5-a strut upright; 6-strut inclined columns; 7-brace end shaft; 8, collecting rainwater in a tank; 9-rolling and pulling machine; 10-a box girder cast section; 11-built-in stiffening plate; 12-upper anchor bolts; 13-lower anchor bolts; 14-bracing beam backing plate; 15-supporting beam hanging grooves; 16-anchor bolt inner connecting plate; 17-a moving guide; 18-carriage rollers; 19-a spreader boom; 20-scaffold counter-pressure body; 21-built-in beam; 22-a beam displacement body; 23-cross bracing vertical plates; 24-built-in support plate; 25-rotating the brace rod; 26-stay bar end hinge; 27-a vertical top pressing body; 28-beam control body; 29-roller control body; 30-built-in rollers; 31-template supporting beam; 32-steel frame hanger rods; 33-a strut connector; 34-a section steel support frame; 35-external box girder mould; 36-an inner mold strut; 37-inner mold control body; 38-inner box girder mould; 39-inner mold supporting and pressing plate; 40-inner mold connecting ribs; 41-counter force fagging; 42-template control body; 43-box beam end form; 44-template bottom support plate; 45-supporting frame control body; 46-position control interconnector plates; 47-a strut positioning body; 48-curtain transverse support rods; 49-rolling and pulling the rope; 50-rolling and pulling the connecting shaft; 51-rain-proof cord fabric; 52-rolling and laying position control pipes; 53-water inlet; 54-bracket baffle.
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, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Example one
Fig. 1 is a construction flow chart of a large hanging basket of a large-scale wide cast-in-place box beam in a large water area, and referring to fig. 1, the construction method of the large hanging basket of the large-scale wide cast-in-place box beam in the large water area comprises the following construction steps:
1) Construction preparation: performing concrete pouring construction on the poured section 10 of the box girder, and preparing materials and devices required by the construction;
2) Preparing a hanging basket component: the hanging basket system comprises an upper longitudinal support beam 1, an upper transverse support beam 2, a lower transverse support beam 3, a lower longitudinal support beam 4, a support upright post 5 and a support inclined post 6; the strut upright post 5 is connected with the strut inclined post 6 through a strut end shaft 7, and the strut upright post 5 is vertically welded with the upper longitudinal support beam 1; the strut inclined column 6 is connected with the upper longitudinal support beam 1 through a bolt; a rainwater collection box 8 is arranged at the top end of the strut upright post 5, and a rolling machine 9 is arranged on the rainwater collection box 8 facing the side of the hanging basket;
3) The box girder poured section hanging basket is connected: an upper anchoring bolt 12 and a lower anchoring bolt 13 are arranged at the position of an internal reinforcing plate 11 of the box girder cast section 10, a supporting beam base plate 14 and an upper longitudinal supporting beam 1 are sequentially arranged on the upper surface of the box girder cast section 10, and a lower longitudinal supporting beam 4 is arranged on the lower surface of a lower transverse supporting beam 3 below the box girder cast section 10; the upper anchoring bolt 12 is connected with the upper transverse supporting beam 2 on the upper part of the upper longitudinal supporting beam 1 through a bolt, the bottom end of the lower anchoring bolt 13 is provided with a supporting beam hanging groove 15, and the lower longitudinal supporting beam 4 is embedded into the supporting beam hanging groove 15; arranging anchor bolt inner connecting plates 16 at the joints of the upper anchor bolts 12 and the lower anchor bolts 13 and the cast sections 10 of the box girders, and connecting the anchor bolt inner connecting plates by welding; longitudinally laying a movable guide rail 17 along the cast section 10 of the box girder, and connecting a bracket roller 18 at the lower part of the upper longitudinal support girder 1 with the movable guide rail 17; enabling the supporting beam hanger rod 19 to penetrate through a flange plate of the box girder poured section 10, and enabling two ends of the supporting beam hanger rod 19 to be firmly connected with the upper supporting beam 2 and the lower longitudinal supporting beam 4 respectively;
4) Arranging a suspension support system: the upright post 5 and the inclined post 6 of the strut are respectively and firmly connected with the upper longitudinal supporting beam 1, and a support counter-pressure body 20 is arranged on the upper longitudinal supporting beam 1; a supporting beam hanger rod 19 is arranged between the upper longitudinal supporting beam 1 and the lower longitudinal supporting beam 4;
5) Erecting a cast-in-place box girder template: a built-in cross beam 21 is arranged in the poured section 10 of the box girder, and a cross beam pushing body 22, a cross support vertical plate 23 and a built-in support plate 24 are sequentially arranged at the end, away from the hanging basket, of the built-in cross beam 21; a rotating support rod 25 is arranged between the cross-bracing vertical plate 23 and the built-in support plate 24, so that two ends of the rotating support rod 25 are respectively connected with the cross-bracing vertical plate 23 and the built-in support plate 24 through support rod end hinges 26, and a vertical jacking body 27 is arranged between the opposite built-in support plates 24; a beam control body 28 is arranged between the built-in beam 21 and the box girder cast section 10, and a roller control body 29 and a built-in roller 30 are arranged on the side, facing the box girder cast section 10, of the built-in beam 21; the upper surface of the lower cross bracing beam 3 is provided with a template bracing beam 31, a steel frame suspender 32 is arranged between the upper cross bracing beam 2 and the section steel bracing frame 34, the lower surface of the section steel bracing frame 34 is provided with a bracing connecting body 33, the position of the section steel bracing frame 34 is controlled by combining the steel frame suspender 32 and the bracing connecting body 33, the spatial position of a box girder outer mold 35 is controlled by combining the template bracing beam 31 and the section steel bracing frame 34, and a box girder reinforcement cage is bound; an inner mold supporting rod 36 and an inner mold position control body 37 are arranged at the overhanging section of the built-in cross beam 21, and an inner mold supporting pressing plate 39 is arranged on the inner side of the box girder inner mold 38, so that the inner mold supporting pressing plates 39 at the two ends of the inner mold position control body 37 are connected with inner mold connecting ribs 40; a counter-force supporting plate 41 and a template control body 42 are sequentially arranged at the lower part of the upper longitudinal supporting beam 1 and the upper part of the lower longitudinal supporting beam 4 facing the poured section 10 of the box girder, the template control body 42 is firmly connected with a box girder end mold 43 at the end part of the box girder inner mold 38, and the template control body 42 applies jacking pressure to the box girder end mold 43;
6) Laying a rain-proof system: a stay bar positioning body 47 is arranged at the overhanging end of the upper longitudinal supporting beam 1, and a cord fabric transverse stay bar 48 is arranged between the adjacent stay bar positioning bodies 47; a rolling connecting shaft 50 is arranged at the end part of the rolling rope 49, and the rolling connecting shaft 50 is connected with a rainproof curtain cloth 51 and a rolling and paving position control pipe 52, so that the top end of the rolling and paving position control pipe 52 is communicated with the rainwater collecting box 8; the rain-proof curtain cloth 51 is driven to rotate and lay through the curtain cloth transverse stay bar 48 by collecting the rain water through the rain water collecting box 8 and filling the water into the rolling and laying position control pipe 52.
Example two
Fig. 2 is a schematic view of a connection structure of a basket at a poured section of a box girder, fig. 3 is a schematic view of a connection structure of a basket at an overhanging section of a box girder, and fig. 4 is a longitudinal section view of an overall arrangement structure of the baskets. Referring to fig. 2-4, the large hanging basket for the large-span wide cast-in-place box girder in a complex water area comprises an upper longitudinal supporting beam 1, an upper transverse supporting beam 2, a lower transverse supporting beam 3, a lower longitudinal supporting beam 4, a strut upright post 5 and a strut inclined post 6; a built-in reinforcing plate 11 is arranged in the cast section 10 of the box girder; a built-in cross beam 21 is arranged in the box girder poured section 10, a cross beam pushing body 22, a cross support vertical plate 23 and a built-in support plate 24 are sequentially arranged at the end, away from the hanging basket, of the built-in cross beam 21, and a cross beam position control body 28, a roller position control body 29 and built-in rollers 30 are arranged between the built-in cross beam 21 and the box girder poured section 10; the rolling and pulling connecting shaft 50 is connected with the rainproof curtain cloth 51 and the rolling and paving position control pipe 52, and can collect rainwater by means of the rainwater collecting box 8 and flush the rolling and paving position control pipe 52 to drive the rainproof curtain cloth 51 to be rolled and paved.
The upper longitudinal support beam 1, the upper transverse support beam 2, the lower transverse support beam 3 and the lower longitudinal support beam 4 are rolled by H-shaped steel with the specification of 300 multiplied by 305 multiplied by 15; the bracket upright post 5 and the bracket inclined post 6 are both rolled by H-shaped steel with the specification of 400 multiplied by 13 multiplied by 21.
The support column end shaft 7 adopts a high-strength bolt rotating shaft with the diameter of 100mm.
The rainwater collection box 8 is formed by rolling a steel plate with the thickness of 1mm, and the cross section of the rainwater collection box is U-shaped.
The working voltage of the winding and pulling machine 9 is 220V.
The cast section 10 of the box girder is made of reinforced concrete material, and the strength grade of the concrete is C50; holes connected with an upper anchor bolt 12 and a lower anchor bolt 13 are respectively arranged on a top plate and a bottom plate of the box girder cast section 10, and holes connected with a supporting beam hanger rod 19 are arranged on a flange plate of the box girder cast section 10; the upper anchoring bolt 12 and the lower anchoring bolt 13 are both formed by combining a screw rod with the diameter of 60mm and a nut; the supporting beam hanger rod 19 is formed by rolling a steel pipe with the diameter of 100mm, and connecting threads are arranged at two ends of the supporting beam hanger rod.
The built-in reinforcing plate 11 is formed by rolling a steel plate with the thickness of 10 mm.
The supporting beam backing plate 14 is formed by cutting a rubber plate with the thickness of 2mm and the width of 20cm.
The cross section of the supporting beam hanging groove 15 is rectangular, and the supporting beam hanging groove is formed by rolling a steel plate with the thickness of 10mm, the length of the supporting beam hanging groove is 40cm, and the width of the supporting beam hanging groove is 20cm.
The anchor bolt inner connecting plate 16 is formed by rolling a steel plate with the thickness of 20 mm.
The movable guide rail 17 is formed by rolling a steel plate with the thickness of 10mm, and the upper surface of the movable guide rail is provided with a U-shaped channel for the support roller 18 to slide.
The carriage roller 18 is a directional roller having a diameter of 10 cm.
The support counter-pressure body 20 is made of a concrete prefabricated block.
The built-in cross beam 21 is formed by rolling a steel plate with the thickness of 2mm, and an internal mold brace rod 36 is arranged between the built-in cross beam and a box girder internal mold 38 for connection; the inner mold stay 36 is formed by cutting H-shaped steel with the specification of 200 × 200 × 8 × 12, and the box girder inner mold 38 is made of a steel template.
A beam pushing body 22, a cross brace vertical plate 23 and a built-in support plate 24 are sequentially arranged at the end, away from the basket hanging end, of the built-in cross beam 21, a rotating brace rod 25 is arranged between the cross brace vertical plate 23 and the built-in support plate 24, two ends of the rotating brace rod 25 are respectively connected with the cross brace vertical plate 23 and the built-in support plate 24 through brace rod end hinges 26, and a vertical jacking body 27 is arranged between the opposite built-in support plates 24; the crossbeam pushing body 22 adopts a hydraulic jack, and the stroke is 2m; the cross bracing vertical plate 23 and the built-in support plate 24 are both formed by rolling steel plates with the thickness of 10 mm; the rotary stay bar 25 is made of a steel pipe with the diameter of 100mm, and the vertical pressing body 27 is composed of a high-strength screw rod with the diameter of 60mm and a bolt, and the fastening directions of the screw rods on the two sides of the bolt are opposite.
The cross beam control body 28 consists of a high-strength screw rod and a bolt with the diameter of 60mm, and a position control inner connecting plate 46 is arranged at the joint of the cast section of the box beam; the position control inner connecting plate 46 is formed by rolling a steel plate with the thickness of 10 mm.
The roller control body 29 adopts a hydraulic jack.
The built-in roller 30 is a universal roller with a diameter of 60 mm.
The upper surface of the lower cross-bracing beam 3 is provided with a template bracing beam 31, and the position of a section steel bracing frame 34 is controlled by combining a steel frame suspender 32 and a bracing frame connecting body 33; the template support beam 31 is formed by rolling a steel plate with the thickness of 20mm, the cross section of the template support beam is rectangular, and the width of the template support beam is 20cm; the steel frame suspender 32 is made of a steel pipe with the strength grade of Q345D and the specification of phi 100 multiplied by 8, the strut connecting body 33 is rolled by a steel plate with the thickness of 10mm, the cross section of the strut connecting body is in a right triangle shape, and the width of the strut connecting body is 30cm.
The section steel strut 34 is formed by welding angle steel with the thickness of 2mm, a template bottom bracing plate 44 is arranged at the joint of the section steel strut 34 and the box girder outer mold 35, a strut baffle plate is arranged on the lower surface of the section steel strut 34, and a strut control body 45 is arranged between the section steel strut 34 and the lower cross bracing beam 3; the cross section of the box girder external mold 35 is semicircular, the template bottom bracing plate 44 is formed by rolling a steel plate with the thickness of 10mm, and the bracing control body 45 adopts a hydraulic jack.
The inner mold control body 37 is composed of a high-strength screw rod with the diameter of 60mm and a bolt, and the fastening directions of the screw rods on the two sides of the bolt are opposite.
The inner die supporting and pressing plate 39 and the reaction supporting plate 41 are both formed by rolling steel plates with the thickness of 10 mm.
The inner mold connecting rib 40 is formed by rolling a steel plate with the thickness of 3mm, and the cross section of the inner mold connecting rib is L-shaped.
The template control body 42 adopts a hydraulic jack.
The box girder end mold 43 is formed by rolling a steel plate with the thickness of 3 mm.
A stay rod positioning body 47 is arranged at the overhanging end of the upper longitudinal support beam 1, and a curtain cloth transverse stay bar 48 is arranged between the adjacent stay rod positioning bodies 47; the stay positioning body 47 is composed of a high-strength screw rod with the diameter of 30mm and a bolt, the fastening directions of the screw rods on the two sides of the bolt are opposite, and the curtain transverse stay 48 is made of a steel pipe with the diameter of 30 mm.
The rolling rope 49 is a steel wire rope with the diameter of 20mm, one end of the rolling rope is connected with the rolling connecting shaft 50, and the other end of the rolling rope is connected with the rolling machine 9.
The roll-pull connecting shaft 50 is a bolt shaft with the diameter of 30 mm.
The rain-proof curtain cloth 51 is formed by cutting a rubber sheet or a geomembrane with the thickness of 1 mm.
The rolling and laying position control pipe 52 is a rubber pipe with the diameter of 100mm, one end of the rubber pipe is closed and is connected with the rolling and pulling connecting shaft 50 in a sticking way, the other end of the rubber pipe is communicated with a water inlet 53 at the rainwater collecting box 8, and the side surface of the rubber pipe is connected with the rainproof curtain cloth 51 in a sticking way; the diameter of the water inlet 53 is 100mm.
The bracket baffle 54 is formed by rolling a steel plate with the thickness of 10 mm.
Claims (5)
1. The construction method of the large hanging basket of the large-span wide-width cast-in-place box girder in the complicated water area is characterized in that: the method comprises the following construction steps:
1) Construction preparation: carrying out concrete pouring construction on the poured section (10) of the box girder, and preparing materials and devices required by the construction;
2) Preparing a hanging basket component: the hanging basket system comprises an upper longitudinal support beam (1), an upper transverse support beam (2), a lower transverse support beam (3), a lower longitudinal support beam (4), a support upright post (5) and a support inclined post (6); the strut upright post (5) is connected with the strut inclined post (6) through a strut end shaft (7), and the strut upright post (5) is vertically welded and connected with the upper longitudinal support beam (1); the strut inclined column (6) is connected with the upper longitudinal bracing beam (1) through a bolt; a rainwater collecting box (8) is arranged at the top end of the strut upright post (5), and a rolling machine (9) is arranged on the rainwater collecting box (8) facing the side of the hanging basket;
3) The box girder poured section hanging basket is connected: an upper anchoring bolt (12) and a lower anchoring bolt (13) are arranged at the position of a built-in reinforcing plate (11) of a box girder cast section (10), a supporting beam base plate (14) and an upper longitudinal supporting beam (1) are sequentially arranged on the upper surface of the box girder cast section (10), and a lower longitudinal supporting beam (4) is arranged on the lower surface of a lower transverse supporting beam (3) below the box girder cast section (10); the upper anchoring bolt (12) is connected with the upper transverse supporting beam (2) on the upper part of the upper longitudinal supporting beam (1) through a bolt, a supporting beam hanging groove (15) is arranged at the bottom end of the lower anchoring bolt (13), and the lower longitudinal supporting beam (4) is embedded into the supporting beam hanging groove (15); arranging anchor bolt inner connecting plates (16) at the joint of the upper anchor bolt (12) and the lower anchor bolt (13) with the cast section (10) of the box girder, and connecting the anchor bolt inner connecting plates by welding; longitudinally laying a movable guide rail (17) along the poured section (10) of the box girder, and connecting a bracket roller (18) at the lower part of the upper longitudinal support beam (1) with the movable guide rail (17); enabling the supporting beam hanger rod (19) to penetrate through a flange plate of the poured section (10) of the box girder, and enabling two ends of the supporting beam hanger rod (19) to be firmly connected with the upper horizontal supporting beam (2) and the lower vertical supporting beam (4) respectively;
4) Arranging a suspension support system: the upright post (5) and the inclined post (6) of the strut are respectively and firmly connected with the upper longitudinal supporting beam (1), and a support counter pressure body (20) is arranged on the upper longitudinal supporting beam (1); a supporting beam hanger rod (19) is arranged between the upper longitudinal supporting beam (1) and the lower longitudinal supporting beam (4);
5) Erecting a cast-in-place box girder template: a built-in cross beam (21) is arranged in the poured section (10) of the box girder, and a cross beam pushing body (22), a cross support vertical plate (23) and a built-in support plate (24) are sequentially arranged at the end, away from the hanging basket, of the built-in cross beam (21); a rotary stay bar (25) is arranged between the cross brace vertical plate (23) and the built-in support plate (24), so that two ends of the rotary stay bar (25) are respectively connected with the cross brace vertical plate (23) and the built-in support plate (24) through stay bar end hinges (26), and a vertical jacking body (27) is arranged between the opposite built-in support plates (24); a beam control body (28) is arranged between the built-in beam (21) and the box beam cast section (10), and a roller control body (29) and a built-in roller (30) are arranged on the side, facing the box beam cast section (10), of the built-in beam (21); the upper surface of the lower cross bracing beam (3) is provided with a template bracing beam (31), a steel frame suspender (32) is arranged between the upper cross bracing beam (2) and the section steel bracing frame (34), the lower surface of the section steel bracing frame (34) is provided with a bracing connecting body (33), the position of the section steel bracing frame (34) is controlled by combining the steel frame suspender (32) and the bracing connecting body (33), the spatial position of a box beam outer mold (35) is controlled by combining the template bracing beam (31) and the section steel bracing frame (34), and a box beam reinforcement cage is bound; an inner mold supporting rod (36) and an inner mold position control body (37) are arranged at the overhanging section of the built-in cross beam (21), an inner mold supporting pressing plate (39) is arranged on the inner side of the box girder inner mold (38), and the inner mold supporting pressing plates (39) at the two ends of the inner mold position control body (37) are connected with inner mold connecting ribs (40) of the box girder inner mold (38); a counterforce supporting plate (41) and a template control body (42) are sequentially arranged on the lower portion of the upper longitudinal supporting beam (1) and the upper portion of the lower longitudinal supporting beam (4) facing the poured section (10) of the box girder, the template control body (42) is firmly connected with a box girder end mold (43) at the end portion of the box girder inner mold (38), and jacking pressure is applied to the box girder end mold (43) through the template control body (42);
6) And (3) laying a rain-proof system: a stay bar positioning body (47) is arranged at the overhanging end of the upper longitudinal support beam (1), and a curtain cloth transverse stay bar (48) is arranged between the adjacent stay bar positioning bodies (47); a rolling and pulling connecting shaft (50) is arranged at the end part of a rolling and pulling rope (49), the rolling and pulling connecting shaft (50) is connected with a rainproof curtain cloth (51) and a rolling and paving position control pipe (52), the rolling and paving position control pipe (52) is a rubber pipe, one end of the rubber pipe is closed and is connected with the rolling and pulling connecting shaft (50), the other end of the rubber pipe is communicated with a water inlet (53) at the rainwater collecting box (8), and the side surface of the rolling and paving position control pipe (52) is connected with the rainproof curtain cloth (51) in a sticking way; one end of the rolling and pulling rope (49) is connected with the rolling and pulling connecting shaft (50), and the other end of the rolling and pulling rope is connected with the rolling and pulling machine (9); the rain-proof curtain cloth (51) is formed by cutting a rubber sheet or a geomembrane, the top end of the rain-proof curtain cloth is stuck and connected with the rainwater collection box (8), and the other end of the rain-proof curtain cloth is rotationally connected with the rolling and pulling connecting shaft (50); the rainwater collecting box (8) is used for collecting rainwater and filling water into the rolling and laying position control pipe (52) to drive the rainproof curtain cloth (51) to be laid through the curtain cloth transverse stay bar (48) in a rotating way.
2. The construction method of the large-scale hanging basket of the large-span wide-width cast-in-place box girder in the complex water area according to claim 1, characterized in that: step 2), the upper longitudinal support beam (1), the upper transverse support beam (2), the lower transverse support beam (3), the lower longitudinal support beam (4), the strut upright post (5) and the strut inclined post (6) are all formed by rolling profile steel; the stay bar end shaft (7) adopts a bolt rotating shaft; the rainwater collection box (8) is formed by rolling a steel plate, and the cross section of the rainwater collection box is U-shaped.
3. The construction method of the large hanging basket of the large-scale wide cast-in-place box girder in the large span of the complex water area according to claim 1, characterized in that: step 3), the box girder cast section (10) is made of reinforced concrete materials, holes connected with an upper anchoring bolt (12) and a lower anchoring bolt (13) are respectively formed in a top plate and a bottom plate of the box girder cast section (10), and holes connected with a supporting beam hanging rod (19) are formed in a flange plate of the box girder cast section (10); the built-in reinforcing plate (11) is formed by rolling a steel plate and is welded with a steel reinforcement cage of the cast section (10) of the box girder.
4. The construction method of the large-scale hanging basket of the large-span wide-width cast-in-place box girder in the complex water area according to claim 1, characterized in that: and 4), adopting a sand bag or a concrete precast block as the support counter pressure body (20).
5. The construction method of the large hanging basket of the large-scale wide cast-in-place box girder in the large span of the complex water area according to claim 1, characterized in that: step 5), the built-in cross beam (21) is formed by rolling a steel plate and is connected with the box girder inner die (38) through an inner die support rod (36); the section steel support frame (34) is formed by welding angle steel, a template bottom support plate (44) is arranged at the joint of the section steel support frame (34) and the box girder outer mold (35), a support frame baffle (54) is arranged on the lower surface of the section steel support frame (34), and a support frame control body (45) is arranged between the section steel support frame (34) and the lower cross support beam (3); the steel bar strut connecting body (33) is formed by rolling a steel plate, the cross section of the steel bar strut connecting body is in a right-angled triangle shape, holes for the steel frame suspender (32) to penetrate through are preset in the strut connecting body (33), and the strut connecting body (33) is welded with the steel bar strut (34); the cross beam position control body (28) is composed of a screw and a bolt, and a position control inner connecting plate (46) is arranged on the joint surface of the cross beam position control body and the poured section (10) of the box girder; the roller control body (29) adopts a hydraulic jack.
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| JP2008031768A (en) * | 2006-07-31 | 2008-02-14 | Ps Mitsubishi Construction Co Ltd | Cantilever overhanging erection method for corrugated steel plate web box girder bridge |
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