Movable continuous rigid frame bridge formwork support system

Abstract

The utility model discloses a movable type continuous rigid frame bridge formwork support system, which belongs to the technical field of rigid frame bridge construction and comprises a movable bracket and an assembly type support frame, the assembly type support frame is arranged on the movable bracket, a top support structure of the assembly type support frame supports a formwork, and a hoisting device on the movable bracket can hoist a module unit of the assembly type support frame; a lifting reinforcing device is arranged on the outer side of the bottom of the movable bracket. The module units are hoisted one by one through a hoisting device, and the assembly type supporting frame is built on the movable bracket; the lifting reinforcing device is used for enabling the supporting structure to support the rigid frame bridge top formwork, meanwhile, the movable support is fixed, and the situation that the movable bracket and the assembly type supporting frame move in the construction process, and consequently the construction quality is affected is avoided; after construction is completed, the supporting structure is separated from the top of the rigid frame bridge through the lifting reinforcing device, and the assembly type supporting frame is moved to another bridge opening for construction through the movable bracket. The device is flexible and convenient to operate, the labor intensity is reduced, and the construction progress is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of rigid frame bridge construction, in particular to a movable continuous rigid frame bridge formwork support system. Background Art

[0002] A rigid frame bridge is a channel built under the roadbed where a highway or railway intersects with a ditch or river, which facilitates the passage of water without hindering traffic. At present, the construction method of continuous rigid frame bridges mostly uses full-frame scaffolding to support the bridge hole template for concrete pouring. This full-frame scaffolding is time-consuming and labor-intensive to build and dismantle, and has low work efficiency. If there are a large number of bridge holes, not only will the labor intensity of the staff be high, but it will also affect the construction progress. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a movable continuous rigid frame bridge formwork support system.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A mobile continuous rigid frame bridge formwork support system includes a mobile bracket and an assembled support frame. The top of the assembled support frame is provided with a support structure for supporting the formwork. The assembled support frame is arranged on the mobile bracket. The mobile bracket is provided with a lifting device for lifting the module unit of the assembled support frame. The bottom outer side of the mobile bracket is provided with a lifting and reinforcing device.

[0006] Furthermore, the assembled support frame includes a vertical frame and a horizontal frame. The horizontal frame is rectangular and arranged at the top of the bridge hole of the rigid frame bridge. Four vertical frames are respectively arranged at the bottom of the four corners of the horizontal frame. The bottom of each vertical frame is arranged on a movable bracket. The outer side of the bottom of the movable bracket is symmetrically provided with a lifting and reinforcement device.

[0007] Furthermore, the module unit includes an upright truss module, a horizontal truss module and a connecting truss module, the horizontal frame is formed by connecting a number of horizontal truss modules end to end, the vertical frame is formed by connecting a number of upright truss modules in sequence from top to bottom, and the connecting truss module is arranged at the junction of the vertical frame and the horizontal frame; the connecting truss module is a frame structure, the outer side of the top frame of the connecting truss module is provided with a connecting portion extending upward, and the inner side is provided with a supporting portion extending inward, the top frame is connected to the bottom of the horizontal truss module through a support, and the top of the horizontal truss module and the outer side frame of the connecting truss module are both connected to the supporting structure.

[0008] Furthermore, the supporting structure includes a supporting seat and a supporting rod, the supporting seat includes a plurality of supports arranged on the top of the horizontal frame, for supporting the horizontal formwork at the bottom of the bridge hole; the supporting rods are a plurality of supports, which are arranged obliquely on the sides of the connecting truss modules in an adjacent manner end to end, for supporting the arc formwork of the arc transition sections on both sides of the top of the bridge hole.

[0009] Furthermore, the mobile bracket includes a base plate, a rectangular frame around it and a lifting platform on its top, rollers are provided under the base plate, the vertical frame is arranged inside the rectangular frame, the top of the rectangular frame is connected to the lifting platform, and the bottom is connected to the base plate, one end of the lifting platform extends to the outside of the rectangular frame, and the lifting device is connected to the lifting platform.

[0010] Furthermore, the lifting device includes a lifting mechanism and a lifting trolley, wherein the lifting mechanism is used to lift the assembled vertical frame, and the lifting trolley is used to lift the upright truss module and move it under the vertical frame to assemble the vertical frame.

[0011] Furthermore, the lifting mechanism includes a jack and a connecting frame. The jack is arranged on a lifting platform. The lifting rod of the jack passes through the lifting platform and is connected to the connecting frame. The connecting frame can be connected to the upright truss module at the bottom of the vertical frame; the jack lifts the connecting frame and the vertical frame through the lifting rod.

[0012] Furthermore, the lifting and reinforcement device includes a base, a lifting leg and a horizontally arranged hydraulic rod, the base is arranged at the bottom of the lifting leg, the lifting leg is arranged on the outside of the movable bracket and connected thereto, the cylinder body of the hydraulic rod is connected to the base, and the piston rod end of the hydraulic rod abuts against the lower end of the lifting leg.

[0013] Furthermore, the lifting legs include legs and a hydraulic cylinder, a cylinder body of the hydraulic cylinder is connected to the outward extension of the movable bracket, and a piston rod end of the hydraulic cylinder is connected to the base.

[0014] Compared with the prior art, the technical progress achieved by the utility model is:

[0015] The utility model utilizes the lifting device on the mobile bracket to hoist the module units one by one, so as to realize the construction of the assembled support frame on the mobile bracket; during construction, the lifting and reinforcing device is used to make the top support structure support the top template of the bridge hole, and the lifting and reinforcing device is used to fix the mobile bracket, so as to avoid the displacement of the mobile bracket and its upper assembled support frame during the construction process and affect the construction quality; after the construction is completed, the lifting and reinforcing device is used to make the support structure detach from the top of the bridge hole, and the assembled support frame is moved to another bridge hole construction site with the help of the mobile bracket, which is flexible and convenient to operate. The utility model does not need to repeatedly dismantle and build the assembled support frame, which can reduce the labor intensity of the staff and improve the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] In the attached picture:

[0018] Figure 1 A structural schematic diagram of a mobile continuous rigid frame bridge formwork support system provided by an embodiment of the utility model;

[0019] Figure 2 It is a side view of a movable continuous rigid frame bridge formwork support system in an embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the assembly process of the mobile continuous rigid frame bridge formwork support system in the embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the mobile bracket and the lifting mechanism in the embodiment of the utility model;

[0022] Figure 5 It is a top view of a movable bracket and a lifting reinforcement device in the same bridge tunnel in an embodiment of the utility model;

[0023] In the figure:

[0024] 00-bridge hole, 01-horizontal formwork, 02-arc formwork; 1-mobile bracket, 11-bottom plate, 12-rectangular frame, 13-lifting platform, 14-roller; 2-assembled support frame, 21-vertical frame, 22-horizontal frame; 3-lifting device, 31-lifting mechanism, 310-lifting rod, 311-jack, 312-connecting frame; 32-lifting trolley; 4-lifting reinforcement device, 41-base, 42-lifting leg, 421-leg, 422-hydraulic cylinder; 43-hydraulic rod; 5-vertical truss module; 6-horizontal truss module; 7-connecting truss module, 71-connecting part, 72-support part; 8-support; 9-support rod. DETAILED DESCRIPTION

[0025] The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The following will describe the embodiments of the present utility model in conjunction with the accompanying drawings.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, a mobile continuous rigid frame bridge formwork support system includes a mobile bracket 1 and an assembled support frame 2. The top of the assembled support frame 2 is provided with a support structure for supporting the formwork. The assembled support frame 2 is arranged on the mobile bracket 1. The mobile bracket 1 is provided with a lifting device 3 for lifting the module unit of the assembled support frame 2. The bottom outer side of the mobile bracket 1 is provided with a lifting and reinforcing device 4. Among them, the assembled support frame 2 includes a vertical frame 21 and a horizontal frame 22. The horizontal frame 22 is rectangular and arranged at the top of the bridge hole of the rigid frame bridge 00. Four vertical frames 21 are respectively arranged at the bottom of the four corners of the horizontal frame 22. The bottom of each vertical frame 21 is arranged on the mobile bracket 1. The bottom outer side of the mobile bracket 1 is symmetrically provided with lifting and reinforcing devices 4. Before pouring the top of the culvert, the lifting and reinforcement device is used to support the support structure on the top of the culvert and fix the mobile bracket to prevent the mobile bracket and the assembled support frame from shifting during the construction process; during the demolding process after pouring, the lifting and reinforcement device is used to separate the support structure from the top of the bridge hole, and the assembled support frame is moved to another bridge hole construction site with the help of the mobile bracket. The operation is convenient and fast, saving time and effort.

[0027] In a specific embodiment of the present invention, Figure 3 As shown, the module unit includes an upright truss module 5, a horizontal truss module 6 and a connecting truss module 7. The horizontal frame 22 is formed by connecting a plurality of horizontal truss modules 6 end to end, and the vertical frame 21 is formed by connecting a plurality of upright truss modules 5 in sequence from top to bottom. The connecting truss module 7 is arranged at the junction of the vertical frame 21 and the horizontal frame 22. The connecting truss module 7 is a frame structure, and an upwardly extending connecting portion 71 is provided on the outer side of the top frame of the connecting truss module 7, and an inwardly extending supporting portion 72 is provided on the inner side. The top frame is connected to the bottom of the horizontal truss module 6 through a support 8, and the top of the horizontal truss module 6 and the outer frame of the connecting truss module 7 are both connected to the supporting structure. Before construction, several horizontal truss modules 6 are connected end to end on the ground to assemble a horizontal frame 22, and then the connecting truss modules 7 are installed at both ends of the horizontal frame 22; then the assembled horizontal frame 22 and the connecting truss modules 7 are lifted by ground lifting equipment, and the connecting truss modules 7 at both ends are placed on the movable brackets 1 on both sides to facilitate the subsequent assembly of the vertical frame 21.

[0028] When designing specifically, Figure 1As shown, the support structure includes a support seat and a support rod 9. The support seat includes a plurality of supports 8 arranged on the top of the horizontal frame 22, which are used to support the horizontal template 01 at the bottom of the bridge hole of the rigid frame bridge 00; the support rod 9 is a plurality of support rods 9, which are arranged obliquely on the side of the connecting truss module 7 in sequence, and are used to support the arc template 02 of the arc transition section on both sides of the bridge hole top. The upright parts on both sides of the bridge hole can be cast by conventional formwork, and the bridge hole top and the arc transition sections on both sides are cast by formwork using the support seat and support rod 9 on the top of the assembled support frame.

[0029] In a specific embodiment of the present invention, Figure 1 , 4 As shown, the mobile bracket 1 includes a bottom plate 11, a rectangular frame 12 around it and a hoisting platform 13 on its top. A roller 14 is provided below the bottom plate 11. The vertical frame 21 is arranged inside the rectangular frame 12. The top of the rectangular frame 12 is connected to the hoisting platform 13, and the bottom is connected to the bottom plate 11. One end of the hoisting platform 13 extends to the outside of the rectangular frame 12. The lifting device 3 is connected to the hoisting platform 13, and can lift and lower the truss module 7 or the assembled vertical frame 21. The mobile bracket 1 with this structure can be easily moved to any bridge hole construction site, and the vertical frame 21 can be assembled using the lifting device 3. During the construction of multiple bridge holes of a continuous rigid frame bridge, the assembled prefabricated support frame does not need to be loaded and unloaded, and can be moved to the corresponding bridge hole location with the help of the mobile bracket, which greatly reduces the labor intensity of the staff and improves the construction progress.

[0030] As a preferred structure, Figure 1 , 3 As shown, the lifting device 3 includes a lifting mechanism 31 and a lifting trolley 32. The lifting mechanism 31 is used to lift the assembled vertical frame 21, and the lifting trolley 32 is used to lift the upright truss module 5 and move it to the bottom of the assembled vertical frame 21, and then lower the vertical frame 21 assembled above to connect and fix it with the upright truss module 5 to achieve the assembly of the vertical frame 21. Among them, the lifting platform 13 is two parallel beams, and the two beams are provided with lifting trolleys. The two lifting trolleys lift the two sides of the upright truss module 5 below through wire ropes, and after moving the upright truss module 5 to the bottom of the assembled vertical frame 21 along the two side beams, they are placed on the corresponding position of the bottom plate 11 mounting platform of the mobile bracket, and then the vertical frame 21 assembled above is lowered by the lifting mechanism 31 to complete the connection and assembly of the upright truss module 5.

[0031] In a specific embodiment of the present invention, Figure 3As shown, the lifting mechanism 31 includes a jack 311 and a connecting frame 312. The jack 311 is arranged on the hoisting platform 13. The lifting rod 310 of the jack 311 penetrates the hoisting platform 13 and is connected to the connecting frame 312. The connecting frame 312 can be connected to the upright truss module 5 at the bottom of the vertical frame 21. The jack 311 lifts the connecting frame 312 and the vertical frame 21 through the lifting rod 310. In specific application, the upper and lower connecting shafts of the connecting frame 312 are removed and inserted into the connecting truss module 7 to be lifted or the upright truss module 5 at the bottom of the assembled vertical frame 21, and then the jack 311 is started to lift the connecting truss module 7 or the assembled vertical frame 21, so as to facilitate the assembly of the vertical frame 21. In the process of demoulding after the pouring is completed, the jack 311 needs to be reversely started to realize the descent of the vertical frame 21, so that the supporting structure can be separated from the top template of the bridge hole, so as to facilitate the mobile bracket to carry the assembled supporting frame to another bridge hole location to be constructed.

[0032] Further optimize the above scheme, such as Figure 2 As shown, the lifting and reinforcing device 4 includes a base 41, lifting legs 42 and a horizontally arranged hydraulic rod 43, wherein the base 41 is arranged at the bottom of the lifting legs 42, the lifting legs 42 are arranged at the outside of the movable bracket 1 and connected thereto, the cylinder body of the hydraulic rod 43 is connected to the base 41, and the piston rod end of the hydraulic rod 43 abuts against the lower end of the lifting legs 42. Among them, the lifting legs 42 include legs 421 and hydraulic cylinders 422, the cylinder body of the hydraulic cylinders 422 is connected to the extension part of the movable bracket 1, and the piston rod end of the hydraulic cylinders 422 is connected to the base 41. In order to facilitate the movement of the lifting trolley 32 between the vertical frames 21 on both sides, the lifting platforms of the movable brackets on both sides can be docked as one, and a group of lifting trolleys can be used to complete the assembly of the vertical frames 21 on both sides, such as Figure 5 As shown. When the assembled support frame is assembled, the hydraulic cylinder 422 is started to make the base contact the ground and the upper support structure close to the top formwork of the bridge hole, and then the hydraulic rod 43 is started to support and fix the mobile bracket. When the casting is completed and the formwork is to be removed, the hydraulic cylinder 422 is started in the reverse direction to make the base separate from the ground and the upper support structure separate from the top formwork of the bridge hole, and the mobile bracket carrying the assembled support frame can be moved to another bridge hole location.

[0033] The assembly process of the utility model is as follows:

[0034] Assemble the horizontal frame 22 on the ground in advance, then install the connecting truss modules 7 at both ends of the horizontal frame 22, install the supporting structure on the outside of the horizontal frame 22, and use the ground lifting equipment to lift it on the mobile bracket 1; then use the lifting mechanism 31 to lift the connecting truss module 7 to a certain height, move the upright truss module 5 to the bottom of the connecting truss module 7 through the lifting trolley 32, and then lower the connecting truss module 7 to complete the connection between the two, and then lift the upright truss module 5 to a certain height through the lifting mechanism 31, move another upright truss module 5 to the bottom through the lifting trolley 32, and then lower the upper upright truss module 5 to complete the connection between the two; repeat the above operations until the assembly of the vertical frame 21 is completed, and the assembly of the prefabricated support frame is completed.

[0035] During the construction process, the upright parts on both sides of the bridge hole can be cast in a normal formwork, and the utility model is used for the formwork casting of the bridge hole top and the arc-shaped transition sections on both sides. Before casting, start the lifting legs 42 to make the base 41 contact the ground, make the top support structure press against the horizontal template 01 at the top of the bridge hole and the arc-shaped templates 02 on both sides, and then start the hydraulic rod 43 to press against the mobile bracket, and then the casting construction can be carried out. When the casting construction is completed, start the lifting legs 42 in the reverse direction to make the base 41 separate from the ground and the top support structure separate from the top of the bridge hole, and then the mobile bracket can be moved to another bridge hole construction site.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the scope of protection of the claims of the utility model.

Claims

1. A mobile continuous rigid frame bridge formwork support system, characterized in that: It includes a mobile bracket and an assembled support frame. The top of the assembled support frame is provided with a support structure for supporting the template. The assembled support frame is arranged on the mobile bracket. The mobile bracket is provided with a lifting device for lifting the module unit of the assembled support frame. The bottom outer side of the mobile bracket is provided with a lifting and reinforcing device.

2. The movable continuous rigid frame bridge formwork support system according to claim 1 is characterized in that: The assembled support frame includes a vertical frame and a horizontal frame. The horizontal frame is rectangular and is arranged at the top of the bridge hole of the rigid frame bridge. Four vertical frames are respectively arranged at the bottom of the four corners of the horizontal frame. The bottom of each vertical frame is arranged on a movable bracket. The outer side of the bottom of the movable bracket is symmetrically provided with lifting and reinforcing devices.

3. The movable continuous rigid frame bridge formwork support system according to claim 2 is characterized in that: The module unit includes an upright truss module, a horizontal truss module and a connecting truss module. The horizontal frame is formed by connecting a plurality of horizontal truss modules end to end, and the vertical frame is formed by connecting a plurality of upright truss modules in sequence from top to bottom. The connecting truss module is arranged at the junction of the vertical frame and the horizontal frame. The connecting truss module is a frame structure, and an upwardly extending connecting portion is provided on the outer side of the top frame of the connecting truss module and an inwardly extending supporting portion is provided on the inner side. The top frame is connected to the bottom of the horizontal truss module through a support, and the top of the horizontal truss module and the outer frame of the connecting truss module are both connected to the supporting structure.

4. The movable continuous rigid frame bridge formwork support system according to claim 3 is characterized by: The supporting structure includes a supporting seat and a supporting rod. The supporting seat includes a plurality of supports arranged on the top of the horizontal frame, which is used to support the horizontal formwork at the bottom of the bridge hole. The supporting rods are a plurality of supports which are arranged obliquely on the sides of the connecting truss modules in an adjacent manner end to end, which are used to support the arc formwork of the arc transition sections on both sides of the top of the bridge hole.

5. The movable continuous rigid frame bridge formwork support system according to claim 3 is characterized by: The mobile bracket includes a base plate, a rectangular frame around it and a lifting platform on its top. Rollers are provided under the base plate, and the vertical frame is arranged inside the rectangular frame. The top of the rectangular frame is connected to the lifting platform, and the bottom is connected to the base plate. One end of the lifting platform extends to the outside of the rectangular frame, and the lifting device is connected to the lifting platform.

6. The movable continuous rigid frame bridge formwork support system according to claim 5 is characterized in that: The lifting device comprises a lifting mechanism and a lifting trolley, wherein the lifting mechanism is used to lift the assembled vertical frame, and the lifting trolley is used to lift the upright truss module and move it below the vertical frame.

7. The movable continuous rigid frame bridge formwork support system according to claim 6 is characterized by: The lifting mechanism includes a jack and a connecting frame. The jack is arranged on a lifting platform. The lifting rod of the jack passes through the lifting platform and is connected to the connecting frame. The connecting frame can be connected to the upright truss module at the bottom of the vertical frame. The jack lifts the connecting frame and the vertical frame through the lifting rod.

8. A movable continuous rigid frame bridge formwork support system according to any one of claims 2 to 7, characterized in that: The lifting and reinforcement device includes a base, lifting legs and a horizontally arranged hydraulic rod, the base is arranged at the bottom of the lifting legs, the lifting legs are arranged on the outside of the movable bracket and connected thereto, the cylinder body of the hydraulic rod is connected to the base, and the piston rod end of the hydraulic rod abuts against the lower end of the lifting leg.

9. The movable continuous rigid frame bridge formwork support system according to claim 8, characterized in that: The lifting legs include legs and a hydraulic cylinder, a cylinder body of the hydraulic cylinder is connected to the outward extension of the moving bracket, and a piston rod end of the hydraulic cylinder is connected to the base.

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