Device for rail transit viaduct baffle construction

Abstract

The utility model relates to the technical field of baffle construction, in particular to a device for rail transit viaduct baffle construction. Comprising a formwork and a trolley used for hoisting the formwork, and the trolley is arranged on a bridge floor of a bridge. The formwork comprises an inner formwork and an outer formwork, the bottom of the inner formwork and the bottom of the outer formwork are fixed to the edge of the bridge floor, and the inner formwork and the outer formwork are combined to be used for baffle pouring; lower pull rod assemblies are arranged at the lower ends of the inner formwork and the outer formwork, upper pull rod assemblies are arranged at the tops of the inner formwork and the outer formwork, and a transverse pull assembly is arranged between one side of the inner formwork and the trolley. The trolley and the formwork form an integral structure, a traditional reinforced concrete structure reinforcing mode is changed, the construction speed is high, dismantling is easy, construction risks are reduced, the defect that a bridge girder erection machine cannot pass through in the baffle construction process is overcome, road occupation construction is avoided, personnel management pressure is relieved, and the baffle construction progress is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of baffle construction technology, specifically a device for baffle construction on elevated rail transit bridges. Background Technology

[0002] During the construction of elevated rail transit bridges, baffle structures are installed on the elevated bridges. On the one hand, the baffle structures serve to shield the construction site to prevent dangerous accidents. On the other hand, they also serve as the foundation for the construction of facilities such as sound barriers and overhead contact lines.

[0003] Currently, most bridge retaining walls are made of concrete, and the construction methods are mainly cast-in-place or precast assembly. The retaining walls of urban railways are outward-sloping load-bearing walls, with overhead contact line columns, sound barrier steel structures, and power ring networks on top. To avoid the risk of damage to the retaining walls due to insufficient load-bearing capacity, the construction conditions for using precast retaining wall structures are not suitable. Cast-in-place construction of box girder retaining walls using ordinary formwork requires the use of cranes to assemble the formwork. Since ordinary formwork requires road closure for installation each time, it significantly restricts construction, requires a large amount of hoisting equipment, poses high construction risks, consumes a lot of management manpower, and requires workers to be suspended on the outside of the bridge at high altitudes, resulting in low safety. Furthermore, the control accuracy of the formwork tilt angle and positioning angle is low. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a device for the construction of retaining walls on elevated rail transit bridges, so as to solve the problems involved in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for constructing retaining walls on elevated rail transit bridges, comprising a template and a trolley for hoisting the template, the trolley being positioned on the bridge deck;

[0006] The template includes an inner template and an outer template. The bottom of the inner template and the outer template are fixed to the edge of the bridge deck. The inner template and the outer template are combined for baffle pouring. The lower end of the inner template and the outer template is provided with a lower tie rod assembly, and the top of the inner template and the outer template is provided with an upper tie rod assembly. A horizontal tie assembly is provided between one side of the inner template and the trolley.

[0007] Furthermore, the pull rod assembly includes a pull rod that penetrates the inner template and the outer template, a nut at one end of the pull rod, and a lower through hole on both the inner template and the outer template, with the pull rod disposed in the lower through hole.

[0008] Furthermore, the upper pull rod assembly includes an upper pull rod, a U-shaped seat located at the top of the inner template and the outer template, the upper pull rod being located inside the U-shaped seat, and a nut being provided at one end of the upper pull rod.

[0009] Furthermore, the trolley includes a chassis, a column mounted on the base plate, a boom beam fixed to the column, a traveling motor and a winch mounted on the boom beam, and a hand-operated hoist mounted on the side of the beam near the template.

[0010] Furthermore, the horizontal tensioning assembly includes a first screw connected to one side of the inner template, a second screw connected to the trolley, and a threaded sleeve disposed between the first screw and the second screw, wherein the threads at both ends of the threaded sleeve are in opposite directions.

[0011] Furthermore, the inner template and the outer template are connected to the edge of the bridge deck by bolts.

[0012] Furthermore, the base plate is fixedly connected to the bridge deck.

[0013] Furthermore, the inner and outer templates are provided with lifting holes for connecting to winches and hand chain hoists.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model forms an integral structure through a trolley and template, which changes the traditional method of reinforcing reinforced concrete structures. It is fast to construct, easy to dismantle, reduces construction risks, overcomes the disadvantage of the bridge erecting machine being unable to pass during the construction of the retaining wall, avoids road occupation during construction, reduces personnel management pressure, and effectively ensures the progress of retaining wall construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure during casting according to an embodiment of the present invention;

[0017] Figure 2 This is a front view diagram of the installation structure of an embodiment of this utility model;

[0018] In the picture:

[0019] 1. Chassis, 2. Bridge deck, 3. Column, 4. Boom beam, 5. Travel motor, 6. Winch, 7. Hand chain hoist, 8. Inner formwork, 9. Outer formwork, 10. Lower tie rod, 11. Upper tie rod, 12. U-shaped seat, 13. First screw, 14. Second screw, 15. Threaded sleeve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Example 1:

[0022] Depend on Figure 1-2 As shown, an apparatus for constructing retaining walls on elevated rail transit bridges includes a template and a trolley for hoisting the template, the trolley being positioned on the bridge deck.

[0023] The trolley includes a chassis 1, which is fixedly connected to the bridge deck 2. Columns 3 are mounted on the chassis 1, and a boom beam 4 is fixed to the columns 3. A traveling motor 5 and a winch 6 are mounted on the boom beam 4. A hand-operated hoist 7 is also mounted on the side of the beam 4 closest to the formwork. First, a crane is used to lift the trolley chassis to the bridge deck, and installation is performed using bolts. Then, eight columns are installed, followed by the boom beam 4 of the trolley, and finally the traveling motor 5 and the winch 6.

[0024] The template is an irregularly shaped template, including an inner template 8 and an outer template 9. The bottoms of the inner template 8 and the outer template 9 are fixed to the edge of the bridge deck 2 by bolts. The inner template 8 and the outer template 9 are used for baffle pouring after assembly. The lower end of the inner template 8 and the outer template 9 is provided with a lower pull rod assembly, and the top of the inner template 8 and the outer template 9 is provided with an upper pull rod assembly. A horizontal pull assembly is provided between one side of the inner template 8 and the trolley. The lower pull rod assembly is used to pull and lock the inner template 8 and the outer template 9 together from the bottom, and the upper pull rod assembly is used to pull and lock the inner template 8 and the outer template 9 together from the top. The inner template 8 and the outer template 9 are provided with lifting holes for connection to a winch and a 6-hand chain hoist 7.

[0025] The pull rod assembly includes a pull rod 10 that passes through the inner template 8 and the outer template 9, and a nut at one end of the pull rod 10. Both the inner template 8 and the outer template 9 have lower through holes, and the pull rod is positioned within one of these holes. During installation, the pull rod is first passed through the lower through hole of the outer template 9. A stop block at one end of the pull rod 10 prevents it from disengaging from the lower through hole. Then, the pull rod 10 is passed through the lower through hole of the inner template 8 and locked with the nut for fixation. The upper pull rod assembly includes an upper pull rod 11 and a U-shaped seat 12 located at the top of the inner template 8 and the outer template 9. The upper pull rod 11 is positioned within the U-shaped seat 12, and a nut is located at one end of the upper pull rod 11. During installation, one end of the upper pull rod 11 is placed within the U-shaped seat 12 of the outer template 9, preventing it from disengaging from the U-shaped seat 12 due to the stop block at the end. Then, the other end of the upper pull rod 11 is placed within the U-shaped seat 12 of the inner template 8 and locked with the nut for fixation. The upper and lower tie rod assemblies allow operators to perform fixed operations on the bridge deck without having to work at heights.

[0026] The lateral support assembly includes a first screw 13 connected to one side of the inner template 8, a second screw 14 connected to the trolley, and a threaded sleeve 15 located between the first screw 13 and the second screw 14, with the threads at both ends of the threaded sleeve 15 having opposite directions. The lateral support assembly provides lateral support for the template.

[0027] During use, the crane lifts the trolley chassis 1 to the bridge deck 1 and installs it using bolt fastening. Then, eight trolley columns 3 are installed, followed by the trolley boom beam 4. After the overall frame is installed, a traveling motor 5, a hand-operated hoist 7, and a winch 6 are installed on the trolley. First, the inner template 8 and outer template 9 are ground and coated with a release agent. Then, the outer template is lifted to its limit height using an electric winch. After the winch 6 stops working at its limit, the hook of the hand-operated hoist 7 is attached to the lifting point hole of the outer template 9, and then the outer template 9 is lifted to the working position by approximately 10 cm. After adjusting the inner template 8 to the required size, the lower pull rod 10 is inserted from the inside into the lower through hole to tighten the inner and outer templates 9, and then the upper pull rod 11 is tightened. The pre-embedded parts for the sound barrier foundation and the pre-embedded channels for the ring network cable are correctly embedded according to the construction requirements. According to the requirements for embedding the channels, fixing holes need to be drilled on-site inside the trolley template, and bolts are used for fixing. Then, concrete is poured and vibrated. Once the concrete pouring is complete and the conditions for formwork removal are met, the formwork is removed, and the trolley is moved to a new pouring point to continue pouring.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for constructing retaining walls on elevated railway bridges, characterized in that: Includes templates and a trolley for hoisting the templates, the trolley being positioned on the bridge deck; The template includes an inner template and an outer template. The bottom of the inner template and the outer template are fixed to the edge of the bridge deck. The inner template and the outer template are combined for baffle pouring. The lower end of the inner template and the outer template is provided with a lower tie rod assembly, and the top of the inner template and the outer template is provided with an upper tie rod assembly. A horizontal tie assembly is provided between one side of the inner template and the trolley.

2. The device for constructing retaining walls on elevated rail transit bridges according to claim 1, characterized in that: The pull rod assembly includes a pull rod that passes through the inner template and the outer template, a nut at one end of the pull rod, and a lower through hole on both the inner template and the outer template, with the pull rod located inside the lower through hole.

3. The device for constructing retaining walls on elevated rail transit bridges according to claim 1, characterized in that: The upper pull rod assembly includes an upper pull rod and a U-shaped seat located at the top of the inner template and the outer template. The upper pull rod is located inside the U-shaped seat, and a nut is provided at one end of the upper pull rod.

4. The device for constructing retaining walls on elevated rail transit bridges according to claim 1, characterized in that: The trolley includes a chassis, a column mounted on the chassis, and a boom beam fixed to the column. The boom beam is equipped with a traveling motor and a winch, and a hand-operated hoist is also provided on the side of the boom beam near the template.

5. The device for constructing retaining walls on elevated rail transit bridges according to claim 1, characterized in that: The horizontal tensioning assembly includes a first screw connected to one side of the inner template, a second screw connected to the trolley, and a threaded sleeve disposed between the first screw and the second screw, wherein the threads at both ends of the threaded sleeve are in opposite directions.

6. The device for constructing retaining walls on elevated rail transit bridges according to claim 1, characterized in that: The inner and outer templates are connected to the edge of the bridge deck by bolts.

7. The device for constructing retaining walls on elevated rail transit bridges according to claim 4, characterized in that: The chassis is fixedly connected to the bridge deck.

8. The device for constructing retaining walls on elevated rail transit bridges according to claim 4, characterized in that: The inner and outer templates are provided with lifting holes for connecting to winches and hand chain hoists.

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