CN219080102U - Reinforced concrete continuous box girder supporting structure - Google Patents

Abstract

The application relates to a reinforced concrete continuous box girder supporting structure, which belongs to the technical field of bridge construction and comprises a channel steel joist, a bowl buckle type bracket and an outer side die flange bracket, wherein the channel steel joist is arranged on the bowl buckle type bracket; the outside die flange support comprises transverse supporting steel, vertical supporting steel and bearing steel, wherein the transverse supporting steel is arranged on the channel steel joist, the vertical supporting steel is vertically arranged on the transverse supporting steel, and the bearing steel is obliquely arranged at one end of the vertical supporting steel far away from the transverse supporting steel. The channel steel joist provides the support for the middle part of case roof beam, bears the weight of steel and provides the support for the both sides edge of a wing of case roof beam for the gravity of adjacent both sides edge of a wing passes through the comparatively even transmission of vertical support steel to on the horizontal support steel, is transmitted to the channel steel joist by horizontal support steel again, and the even transmission is on the support is detained to the bowl at last, effectively improves current temporary support structure and easily appears the skew and influences the problem to the supporting effect of case roof beam both sides edge of a wing.

Description

Reinforced concrete continuous box girder supporting structure

Technical Field

The application relates to the field of bridge construction technology, in particular to a reinforced concrete continuous box girder supporting structure.

Background

The box girder is one of the middle girders of the bridge engineering, the inside is hollow, flanges are arranged on two sides of the upper part, and the box girder is similar to a box, so that the box girder with a reinforced concrete structure is divided into a prefabricated box girder and a cast-in-situ box girder, the box girder prefabricated in a separate place can be erected after the lower part engineering is completed by combining a bridge girder erection machine, the engineering progress can be accelerated, and the construction period can be saved; cast-in-situ box girders are mostly used for large continuous bridges; before the box girder is installed, a temporary supporting structure is generally required to be erected to support the box girder in order to facilitate subsequent construction of the box girder.

At present, the existing box girder supporting structure generally comprises a plurality of steel pipe stand columns and a plurality of cross bars, the plurality of steel pipe stand columns and the plurality of cross bars are connected into an integral scaffold through connecting fasteners, and then the stability of the integral scaffold is enhanced by being matched with a scissor support, so that a temporary supporting structure for the box girder is formed.

With respect to the above-described related art, the inventors found that there are the following drawbacks: the two flanges of the box girder are generally obliquely arranged, when the flanges on two sides of the box girder are supported by adopting the steel pipe scaffold, the steel pipe upright post at the support flange is in an oblique stress state, and the shearing resistance of the steel pipe scaffold is weaker, so that the steel pipe scaffold is easily deviated to influence the supporting effect on the flanges on two sides of the box girder.

Disclosure of Invention

In order to solve the problem that the existing temporary supporting structure is easy to deviate to influence the supporting effect on flanges on two sides of a box girder, the application provides a reinforced concrete continuous box girder supporting structure.

The application provides a reinforced concrete continuous box girder supporting structure adopts following technical scheme:

the reinforced concrete continuous box girder supporting structure comprises a channel steel joist, a bowl buckle type bracket and an outer side mold flange bracket, wherein the channel steel joist is arranged on the bowl buckle type bracket, and the bowl buckle type bracket is arranged on the ground and is used for supporting the channel steel joist; the outside die flange support sets up on the channel-section steel joist and is used for supporting the box girder edge of a wing, outside die flange support includes horizontal supporting steel, vertical supporting steel and bears the weight of steel, horizontal supporting steel sets up on the channel-section steel joist, vertical supporting steel is provided with a plurality of on horizontal supporting steel perpendicularly, bear the weight of the steel slope setting and keep away from the one end of horizontal supporting steel at vertical supporting steel, just the inclination who bears the weight of steel is unanimous with the inclination of box girder edge of a wing.

Through adopting above-mentioned technical scheme, the staff hoists the box girder onto channel-section steel joist and bear on the steel, the channel-section steel joist provides the support for the middle part of box girder, bear the steel and provide the support for the both sides edge of a wing of box girder, through the installation that bears the continuous slope of steel, make the gravity of adjacent both sides edge of a wing pass through the vertical support steel comparatively even transfer to on the horizontal support steel, transfer to the channel-section steel joist by horizontal support steel again on, even transfer to bowl knot formula support at last, effectively improve current temporary support structure and easily appear the skew and influence the problem to the supporting effect of box girder both sides edge of a wing.

Optionally, the bowl buckle type bracket comprises a vertical rod, a lower bowl buckle, an upper bowl buckle, a cross rod and an upper adjusting jacking, wherein a plurality of limiting pins are arranged on the vertical rod at intervals along the length direction of the vertical rod, the lower bowl buckle is fixedly arranged on the vertical rod, the upper bowl buckle is arranged on the vertical rod in a sliding manner, and the upper bowl buckle is positioned above the lower bowl buckle; the end part of the cross rod is provided with a connector which is inserted into the lower bowl buckle; the up-regulating jacking is arranged at the top of the vertical rod and used for adjusting the height of the vertical rod in the vertical direction, and the top of the up-regulating jacking is in butt joint with the channel steel joist.

Through adopting above-mentioned technical scheme, when the staff sets up the bowl knot formula support, insert the joint of horizontal pole tip to down in the bowl knot, then the bowl is detained in the downwardly sliding for upward bowl knot and joint butt, then rotate upward bowl knot and make the spacer pin with upward bowl knot support tightly, will adjust the jacking to suitable height at last, accomplish the setting up of bowl knot formula support, the staff sets up bowl knot formula support convenient, and through the installation of adjusting the jacking upward, the staff adjusts the pole setting in the vertical direction highly convenient.

Optionally, the bottom of pole setting is provided with down-regulating jacking, and the bottom of down-regulating jacking is provided with the backing plate.

By adopting the technical scheme, when the flatness of the ground is poor, the jacking is adjusted downwards, so that the staff can conveniently adjust the bottoms of the vertical rods to the same horizontal plane, and the adaptability of the staff to different grounds when the staff erects the vertical rods is improved; the backing plate effectively improves the homogeneity that the pole setting was pressed, and then effectively improves the stability of pole setting.

Optionally, a plurality of diagonal braces are arranged on the vertical rods, and adjacent diagonal braces are arranged in a crossing manner.

By adopting the technical scheme, the adjacent diagonal braces which are installed in a crossed way form the diagonal braces, so that the whole shearing resistance of the vertical rods and the cross rods is effectively improved.

Optionally, a plurality of square timber is arranged between the channel steel joist and the transverse supporting steel.

Through adopting above-mentioned technical scheme, the flitch makes the even transmission of pressure of transverse support steel with the case roof beam to the channel-section steel joist on, and then further promotes the homogeneity of the pressure that the case roof beam transmitted to the bowl knot formula support.

Optionally, the transverse supporting steel is provided with a railing, and the railing is provided with a safety net.

Through adopting above-mentioned technical scheme, during the staff construction, railing and safety net provide the protection for the staff, effectively improve the security of staff during operation, and safety net effectively prevents debris to drop and exist the potential safety hazard of high altitude weight thing.

Optionally, the vertical support steel comprises a first support steel, a second support steel, a fastening bolt and a fastening nut, wherein the first support steel is arranged on the transverse support steel, and a first hole is formed in one end, far away from the transverse support steel, of the first support steel; the second support steel is hinged to the bearing steel, a second strip hole is formed in one end, far away from the bearing steel, of the second support steel, the fastening bolt is arranged in the first strip hole in a sliding mode, and the fastening bolt penetrates through the second strip hole and is in threaded connection with the fastening nut.

Through adopting above-mentioned technical scheme, the staff twists fastening nut makes fastening nut keep away from the second and supports the steel, then moves the second to being close to or keeping away from the direction of first support steel and support the steel and rotate on first support steel this moment, when the inclination who will bear the weight of the steel adjusts to suitable angle back, twists fastening nut again makes fastening nut and second support steel support tightly, and fastening bolt and fastening nut restrict the removal of second support steel this moment, realize bearing the adjustment of inclination of steel, effectively improve the adaptability to different inclination's box girder edge of a wing.

Optionally, a first inclined steel is hinged on the transverse supporting steel, and a first sliding hole is formed in one end, far away from the transverse supporting steel, of the first inclined steel; the bearing steel is hinged with a second inclined steel, one end of the second inclined steel, far away from the bearing steel, is provided with a second sliding hole, a locking bolt is arranged in the first sliding hole in a sliding mode, the locking bolt is arranged on the second sliding hole in a sliding penetrating mode, and locking nuts are arranged on the locking bolt in a threaded mode.

Through adopting above-mentioned technical scheme, when the staff adjusts the second and supports the steel, twist lock nut makes lock nut keep away from the second oblique steel, bear the weight of the steel and drive the second and incline the steel and remove this moment, first oblique steel and horizontal support steel, second oblique steel and bear the weight of the steel and all take place to rotate when the second is inclined the steel and remove, adjust the second and support the steel and accomplish the back, rotate lock nut and make lock nut and second oblique steel support tightly, restrict the removal of second oblique steel, first oblique steel and second oblique steel effectively improve the bearing capacity and the shear capacity of first support steel and second support steel this moment.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the staff hoists the box girder onto the channel steel joist and the bearing steel, the channel steel joist provides support for the middle part of the box girder, the bearing steel provides support for the flanges on two sides of the box girder, and the gravity of the flanges on two adjacent sides is uniformly transferred to the transverse supporting steel through the vertical supporting steel and then transferred to the channel steel joist through the transverse supporting steel, and finally, the gravity is uniformly transferred to the bowl buckle type support, so that the problem that the existing temporary supporting structure is easy to deviate to influence the supporting effect on the flanges on two sides of the box girder is effectively solved;

2. the worker twists the fastening nut to enable the fastening nut to be far away from the second support steel, then moves the second support steel towards a direction close to or far away from the first support steel, at the moment, the bearing steel rotates on the first support steel, after the inclination angle of the bearing steel is adjusted to a proper angle, the fastening nut is twisted again to enable the fastening nut to be abutted against the second support steel, at the moment, the fastening bolt and the fastening nut limit the movement of the second support steel, the inclination angle of the bearing steel is adjusted, and the adaptability to box girder flanges with different inclination angles is effectively improved;

3. when the staff adjusts the second supporting steel, twist lock nut makes lock nut keep away from the second oblique steel, bears the weight of the steel and drives the second oblique steel and remove this moment, and first oblique steel and horizontal supporting steel, second oblique steel all take place to rotate with bearing the weight of the steel when the second oblique steel removes, and after the adjustment second supporting steel was accomplished, rotated lock nut and made lock nut and second oblique steel support tightly, restriction second oblique steel's removal, and first oblique steel and second oblique steel effectively improve the bearing capacity and the shearing capacity of first supporting steel and second supporting steel this moment.

Drawings

Fig. 1 is a schematic structural view of a reinforced concrete continuous box girder support structure according to an embodiment of the present application.

Fig. 2 is an enlarged partial schematic view of the portion a in fig. 1.

Fig. 3 is a partially enlarged schematic view of the portion B in fig. 1.

Fig. 4 is a schematic partial structure of another view of an embodiment of the present application.

Fig. 5 is a schematic view of the connection structure of the upright and the cross bar according to the embodiment of the present application.

Reference numerals: 1. channel steel joists; 2. a bowl buckle type bracket; 21. a vertical rod; 22. a bowl fastener is arranged; 23. a bowl buckle is arranged; 24. a cross bar; 25. adjusting the jacking upwards; 3. an outer side form flange bracket; 31. transverse support steel; 32. vertical support steel; 321. a first support steel; 3211. a first aperture; 322. a second support steel; 3221. a second hole; 323. a fastening bolt; 324. a fastening nut; 33. carrying steel; 4. a limiting pin; 5. a joint; 6. downward adjusting the jacking; 7. a backing plate; 8. diagonal bracing; 9. square timber; 10. railing; 11. a safety net; 12. a first oblique steel; 121. a first slide hole; 13. a second oblique steel; 131. a second slide hole; 14. a locking bolt; 15. a lock nut; 231. a protruding part.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses a reinforced concrete continuous box girder supporting structure.

Referring to fig. 1 and 2, the reinforced concrete continuous box girder supporting structure comprises a channel steel joist 1, a bowl buckle type bracket 2 and an outer side die flange bracket 3, wherein the channel steel joist 1 is arranged on the bowl buckle type bracket 2, and the bowl buckle type bracket 2 is arranged on the ground and is used for supporting the channel steel joist 1; the outside die flange support 3 is installed on the channel steel joist 1 and is used for supporting the box girder flange, the outside die flange support 3 includes horizontal supporting steel 31, vertical supporting steel 32 and bearing steel 33, the horizontal supporting steel 31 passes through the bolt to be installed on the channel steel joist 1, vertical supporting steel 32 installs a plurality of on horizontal supporting steel 31 perpendicularly, bearing steel 33 passes through the bolt slope and installs the one end that vertical supporting steel 32 kept away from horizontal supporting steel 31, and bearing steel 33's inclination is unanimous with the inclination of box girder flange.

The channel steel joist 1 can be I-steel, channel steel and the like, and in the embodiment, the channel steel joist 1 is a No. 10 channel steel and has the characteristics of corrosion resistance, wear resistance, high strength and the like; the transverse support steel 31 is 45a I-steel, and the vertical support steel 32 is a rectangular steel column.

Staff hoists the box girder to the channel-section steel joist 1 and bear on the steel 33, the channel-section steel joist 1 provides the support for the middle part of box girder, bear the steel 33 and provide the support for the both sides edge of a wing of box girder, through the installation that bears steel 33 continuous slope, make the gravity of adjacent both sides edge of a wing comparatively even transfer to on the horizontal supporting steel 31 through vertical supporting steel 32, transfer to on the channel-section steel joist 1 by horizontal supporting steel 31 again, last even transfer is on the bowl knot formula support 2, effectively improve current temporary support structure and easily appear the skew and influence the problem to the supporting effect of box girder both sides edge of a wing.

Referring to fig. 1, a rail 10 is mounted on a lateral support steel 31, and the rail 10 is connected with a bearing steel 33, and a safety net 11 is mounted on the rail 10; in the embodiment, the railing 10 is an assembled protective railing, and has the characteristics of convenience and quickness in assembly and disassembly; the safety net 11 is made of high-density polyethylene and has the characteristics of flame retardance, wear resistance, high strength, good elasticity and the like. When working personnel construct, the railing 10 and the safety net 11 provide protection for the working personnel, so that the safety of the working personnel is effectively improved, and the safety net 11 effectively prevents sundries from falling and potential safety hazards of high-altitude falling objects exist.

Referring to fig. 1 and 2, a plurality of square timber 9 are installed between a channel steel joist 1 and a transverse supporting steel 31, in this embodiment, the square timber 9 are installed on the channel steel joist 1 at longitudinal intervals, and the channel steel joist 1 is installed on a bowl-buckle type bracket 2 at transverse intervals, so that the uniformity of pressure of a box girder transferred to the bowl-buckle type bracket 2 is effectively improved; and the battens enable the transverse supporting steel 31 to uniformly transmit the pressure of the box girder to the channel steel joist 1, so that the uniformity of the pressure transmitted to the bowl-buckle type bracket 2 by the box girder is further improved.

Referring to fig. 1, a plurality of diagonal braces 8 are installed on a vertical rod 21, and adjacent diagonal braces 8 are installed in a cross manner, in this embodiment, the diagonal braces 8 are also steel pipes, and the diagonal braces 8 are fixed on the vertical rod 21 through fasteners. Adjacent diagonal braces 8 which are installed in a crossed manner form the diagonal braces, and the shearing resistance of the whole upright rod 21 and the cross rod 24 is effectively improved.

Referring to fig. 1, the bottom of the upright 21 is provided with a down-regulating jacking 6, and the bottom of the down-regulating jacking 6 is provided with a backing plate 7, and in this embodiment, the down-regulating jacking 6 also includes a screw, a bottom plate, and an adjusting nut. When the flatness of the ground is poor, the jacking 6 is adjusted downwards, so that a worker can conveniently adjust the bottoms of the vertical rods 21 to the same horizontal plane, and the adaptability of the worker to different grounds when the worker erects the vertical rods 21 is improved; the backing plate 7 effectively improves the uniformity of the compression of the vertical rod 21, and further effectively improves the stability of the vertical rod 21.

Referring to fig. 3 and 4, the vertical support steel 32 includes a first support steel 321, a second support steel 322, a fastening bolt 323, and a fastening nut 324, the first support steel 321 is mounted on the lateral support steel 31, and a first hole 3211 is formed along a length direction of the first support steel 321 at one end of the first support steel 321 away from the lateral support steel 31; the second support steel 322 is hinged on the bearing steel 33, a second hole 3221 is formed in one end, far away from the bearing steel 33, of the second support steel 322 along the length direction of the second support steel 322, the fastening bolt 323 is slidably mounted in the first hole 3211, and the fastening bolt 323 penetrates through the second hole 3221 and is in threaded connection with the fastening nut 324; the transverse support steel 31 is hinged with a first inclined steel 12, and one end of the first inclined steel 12 far away from the transverse support steel 31 is provided with a first sliding hole 121 along the length direction of the first inclined steel 12; the bearing steel 33 is hinged with a second inclined steel 13, a second sliding hole 131 is formed in the end, away from the bearing steel 33, of the second inclined steel 13 along the length direction of the second inclined steel 13, a locking bolt 14 is slidably mounted in the first sliding hole 121, the locking bolt 14 is slidably arranged on the second sliding hole 131 in a penetrating mode, and a locking nut 15 is mounted on the locking bolt 14 in a threaded mode.

In the embodiment, the first support steel 321 is 10 # C-shaped steel, the second support steel 322 is square steel, and the width of the second support steel 322 is consistent with the width of the inner opening of the first support steel 321, so that the connection stability of the second support steel 322 and the first support steel 321 is improved; in this embodiment, the first oblique steel 12 is also a number 10C-shaped steel, the second oblique steel 13 is also a square steel, and the width of the second oblique steel 13 is consistent with the width of the inner opening of the first oblique steel 12, so as to improve the connection stability of the first oblique steel 12 and the second oblique steel 13.

The staff twists the fastening nut 324 to enable the fastening nut 324 to be far away from the second supporting steel 322, twists the locking nut 15 to enable the locking nut 15 to be far away from the second inclined steel 13, then moves the second supporting steel 322 towards the direction close to or far away from the first supporting steel 321, at the moment, the bearing steel 33 rotates on the first supporting steel 321, meanwhile, the bearing steel 33 drives the second inclined steel 13 to move, the first inclined steel 12, the transverse supporting steel 31, the second inclined steel 13 and the bearing steel 33 rotate when the second inclined steel 13 moves, after the inclination angle of the bearing steel 33 is adjusted to a proper angle, the fastening nut 324 is twisted to enable the fastening nut 324 to be abutted against the second supporting steel 322, at the moment, the movement of the second supporting steel 322 is limited by the fastening bolt 323 and the fastening nut 324, then the locking nut 15 is rotated to enable the locking nut 15 to be abutted against the second inclined steel 13, the movement of the second inclined steel 13 is limited, the inclination angle of the bearing steel 33 is adjusted, and the inclination angle of the bearing steel 33 is adjusted, the box girder flanges with different inclination angles are effectively improved; and at this time, the first and second diagonal steels 12 and 13 effectively improve the bearing capacity and the shearing capacity of the first and second support steels 321 and 322.

Referring to fig. 2 and 5, the bowl buckle type bracket 2 comprises a vertical rod 21, a lower bowl buckle 22, an upper bowl buckle 23, a cross rod 24 and an upper adjusting jacking 25, wherein a plurality of limiting pins 4 are welded on the vertical rod 21 at intervals along the length direction of the vertical rod 21, the lower bowl buckle 22 is welded on the vertical rod 21, the upper bowl buckle 23 is slidably arranged on the vertical rod 21, and the upper bowl buckle 23 is positioned above the lower bowl buckle 22; the end part of the cross bar 24 is welded with a joint 5, and the joint 5 is inserted into the lower bowl buckle 22; the up-regulating jacking 25 is arranged at the top of the vertical rod 21 and used for adjusting the vertical height of the vertical rod 21, and the top of the up-regulating jacking 25 is abutted with the channel steel joist 1.

In this embodiment, the upright rod 21 and the cross rod 24 are steel pipes, the upper adjusting jacking 25 comprises a screw rod, a bottom plate and an adjusting nut, the bottom plate is installed at one end of the screw rod, steel plates are integrally formed at two ends of the bottom plate, the adjusting nut is installed on the screw rod in a threaded manner, a worker inserts the screw rod into the upright rod 21, then rotates the adjusting nut to enable the adjusting nut to move along the length direction of the screw rod, and therefore the height of the upright rod 21 can be adjusted conveniently by the worker in the vertical direction; in this embodiment, the upper bowl buckle 23 is integrally formed with a hollow protruding portion 231, the upper bowl buckle 23 is rotated by a worker to enable the protruding portion 231 to be opposite to the limiting pin 4, then the upper bowl buckle 23 can be slid downwards, the upper end of the joint 5 is clamped into the upper bowl buckle 23 by the upper bowl buckle 23, the top of the upper bowl buckle 23 is gradually inclined from the direction close to the lower bowl buckle 22 to the direction far away from the lower bowl buckle 22, after the upper bowl buckle 23 is slid downwards by the worker, the top of the upper bowl buckle 23 can be gradually abutted against the limiting pin 4 by rotating the upper bowl buckle 23, and the joint 5 is clamped between the upper bowl buckle 23 and the lower bowl buckle 22.

The implementation principle of the reinforced concrete continuous box girder supporting structure is as follows: after the bowl buckle type bracket 2 is erected by a worker, the channel steel joist 1 is mounted on the upper adjusting jacking bracket 25, then the square timber 9 is mounted on the channel steel joist 1, then the outer side die flange bracket 3 is mounted on the square timber 9, the fixation of the fastening nut 324 and the locking nut 15 is released, the distance between the first support steel 321 and the second support steel 322 is regulated, and at the moment, the distance between the second inclined steel 13 and the first inclined steel 12 is adaptively changed, so that the inclination angle of the bearing steel 33 is matched with the inclination angle of the flange of the box girder; then the staff hoists the box girder to the channel-section steel joist 1 and bear the weight of steel 33 above, the channel-section steel joist 1 provides the support for the middle part of box girder, bear the weight of steel 33 for the both sides edge of a wing of box girder and provide the support, the gravity of adjacent both sides edge of a wing passes through vertical support steel 32, the more even transmission of second oblique steel 13 and first oblique steel 12 is on the horizontal support steel 31, the transmission is on the channel-section steel joist 1 by horizontal support steel 31 again, at last even transmission is on the bowl knot formula support 2, effectively improve current temporary support structure and easily appear the skew and influence the problem to the supporting effect of box girder both sides edge of a wing.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. A reinforced concrete continuous box girder supporting structure which is characterized in that: the novel steel support comprises a channel steel joist (1), a bowl buckle type support (2) and an outer side flange support (3), wherein the channel steel joist (1) is arranged on the bowl buckle type support (2), and the bowl buckle type support (2) is arranged on the ground and used for supporting the channel steel joist (1); the outside die flange support (3) is arranged on the channel steel joist (1) and is used for supporting a box girder flange, the outside die flange support (3) comprises transverse supporting steel (31), vertical supporting steel (32) and bearing steel (33), the transverse supporting steel (31) is arranged on the channel steel joist (1), the vertical supporting steel (32) is vertically provided with a plurality of on the transverse supporting steel (31), the bearing steel (33) is obliquely arranged at one end, far away from the transverse supporting steel (31), of the vertical supporting steel (32), and the inclination of the bearing steel (33) is consistent with that of the box girder flange.

2. The reinforced concrete continuous box girder support structure of claim 1, wherein: the bowl buckle type support (2) comprises a vertical rod (21), a lower bowl buckle (22), an upper bowl buckle (23), a cross rod (24) and an upper adjusting jacking (25), wherein a plurality of limiting pins (4) are arranged on the vertical rod (21) at intervals along the length direction of the vertical rod (21), the lower bowl buckle (22) is fixedly arranged on the vertical rod (21), the upper bowl buckle (23) is slidably arranged on the vertical rod (21), and the upper bowl buckle (23) is positioned above the lower bowl buckle (22); the end part of the cross rod (24) is provided with a joint (5), and the joint (5) is inserted into the lower bowl buckle (22); the up-regulating jacking (25) is arranged at the top of the vertical rod (21) and used for adjusting the height of the vertical rod (21) in the vertical direction, and the top of the up-regulating jacking (25) is abutted to the channel steel joist (1).

3. The reinforced concrete continuous box girder support structure of claim 2, wherein: the bottom of pole setting (21) is provided with down-regulation jacking (6), and the bottom of down-regulation jacking (6) is provided with backing plate (7).

4. The reinforced concrete continuous box girder support structure of claim 2, wherein: the upright (21) is provided with a plurality of diagonal braces (8), and the adjacent diagonal braces (8) are arranged in a crossing manner.

5. The reinforced concrete continuous box girder support structure of claim 1, wherein: a plurality of square timber (9) are arranged between the channel steel joist (1) and the transverse supporting steel (31).

6. The reinforced concrete continuous box girder support structure of claim 1, wherein: the transverse support steel (31) is provided with a railing (10), and the railing (10) is provided with a safety net (11).

7. The reinforced concrete continuous box girder support structure of claim 1, wherein: the vertical support steel (32) comprises a first support steel (321), a second support steel (322), a fastening bolt (323) and a fastening nut (324), wherein the first support steel (321) is arranged on the transverse support steel (31), and a first hole (3211) is formed in one end, far away from the transverse support steel (31), of the first support steel (321); the second support steel (322) is hinged to the bearing steel (33), a second hole (3221) is formed in one end, far away from the bearing steel (33), of the second support steel (322), the fastening bolt (323) is slidably arranged in the first hole (3211), and the fastening bolt (323) penetrates through the second hole (3221) and is in threaded connection with the fastening nut (324).

8. The reinforced concrete continuous box girder support structure of claim 7, wherein: the transverse supporting steel (31) is hinged with a first inclined steel (12), and a first sliding hole (121) is formed in one end, far away from the transverse supporting steel (31), of the first inclined steel (12); the bearing steel (33) is hinged to be provided with a second inclined steel (13), one end of the second inclined steel (13) away from the bearing steel (33) is provided with a second sliding hole (131), the first sliding hole (121) is internally provided with a locking bolt (14) in a sliding mode, the locking bolt (14) is arranged on the second sliding hole (131) in a penetrating mode in a sliding mode, and locking nuts (15) are arranged on the locking bolt (14) in a threaded mode.

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