CN205839594U - Over-and-under type construction system that bridge superstructure construction used - Google Patents

Abstract

The utility model discloses an over-and-under type construction system that bridge superstructure construction was used, include: the device comprises an internal mold working trolley, a bending and stretching steel formwork, a girder supporting truss working trolley, a steel frame supporting frame and an oil pressure lifting device; the construction system changes the conventional assembly from the high-altitude operation part to the assembly from the ground part, and the hydraulic lifting device lifts the working vehicle for bearing the girder and the support truss on the steel frame support frame from bottom to top to perform positioning construction; when the girder supporting truss working vehicle equipment is pushed in, the steel frame supporting frame is descended, the times of high-place assembly operation of personnel can be reduced in a circulating construction mode, and the use safety is improved.

Description

Elevating construction system for bridge superstructure construction

technical field

The utility model relates to a civil engineering construction method used in the construction of a bridge superstructure, in particular to a supporting lifting construction system used in the construction of a bridge superstructure.

Background technique

As shown in Figure 1, the conventional civil construction method for the bridge superstructure is to fill the under-bridge space under the bridge superstructure with supporting frames. Each stage of the equipment needs to rely on the mobile crane to cooperate with disassembly and assembly. The construction personnel need to be located at a high place for disassembly and assembly work, and the same is true for disassembly.

As shown in Figure 2, a known civil engineering construction method for bridge superstructure, the construction method is to set brackets on bridge pier columns or cap beams in advance, and then use mobile cranes or loading equipment to load the main beam working vehicle Completion, demolition is the same. The installation bracket must be installed before the next pier column or cap beam when advancing, and the installation must rely on a mobile crane for assembly.

To sum up, the known two representative bridge superstructure civil construction methods have the following disadvantages respectively:

First of all, a large number of support frames must be used, and there is no space under the bridge for construction, and the road under the bridge must be closed for construction during the construction.

Secondly, when the support frame and formwork are assembled, construction workers need to be exposed to high-altitude operations, and mobile cranes are required to cooperate with each stage of construction, and the same is true for dismantling.

Furthermore, when installing the brackets on each pier column, construction workers need to be exposed to high-altitude operations, and mobile cranes are required to cooperate with the construction, and the same is true for dismantling.

In addition, the civil engineering construction systems of the above-mentioned two conventional bridge superstructures all need to set up additional equipment for construction personnel to get on and off.

In view of this, the designer aimed at the many shortcomings and inconveniences caused by the imperfect design of the existing bridge superstructure construction and use system, and deeply conceived, and actively researched and improved the trial and developed and designed the utility model.

Utility model content

The purpose of the utility model is to provide a lifting construction system for bridge superstructure construction that can reduce the use of support frames, eliminate the need to close the road, and improve the safety of use.

In order to achieve the above object, the solution of the present utility model is:

A support lifting construction system used in the construction of the bridge superstructure, including a plurality of internal mold work trolleys, two flexion and extension steel formwork, two main beam support truss work vehicles, two steel frame support frames, and four hydraulic lifting equipment. The plurality of internal mold working trolleys are located above the bottom plate of the completed bridge superstructure, which includes a steel formwork that moves up and down and a steel formwork that moves sideways; Between the frame support frame and the pier column, the oil pressure lifting equipment drives the steel frame support frame to carry the main girder and support the truss work vehicle to rise and fall. The frame support frame is assembled and disassembled on the ground. When the main beam supports the truss work vehicle, the steel frame support frame is lowered, and the construction is carried out in a cyclical construction method.

The inner mold workbench is provided with a telescopic oil pressure rod to drive the steel formwork; the inner mold work trolley is provided with moving rollers for moving the inner mold work trolley to the positioning; the inner mold work trolley is provided with an oil hydraulic jack; The internal formwork trolley is used for pouring the concrete of the web and roof of the bridge superstructure.

The two flexion-extension steel formwork and the two main girder support truss work vehicles are steel formwork equipment for the bridge superstructure, and there are fixed trolleys and mobile trolleys under the flexion-extension steel formwork and main beam support truss work vehicles; the flexion-extension steel formwork uses The hydraulic telescopic rod controls the upward bending and downward stretching and flattening above the main beam supporting truss; the main beam supporting truss working vehicle uses the hydraulic telescopic rod to control the inward push joint and outward push movement. When moving to the position, use the latch position.

The steel frame support frame is divided into trolley frame, channel frame and base frame, and each frame is divided into A unit and B unit, and A and B units are corresponding modularized frames. The corresponding joints of the steel beams of units A and B are provided with joint base plates and locked with bolts. The channel pedals, platforms, and up and down stairs of the steel frame support frame are joined with bolts and bolts. There are rollers between the steel frame support frame and the pier columns. Keep your distance.

The four hydraulic lifting devices are arranged between the steel frame support frame and the pier column, and each hydraulic lifting device provides the power source when the steel frame support frame is raised and lowered. The hydraulic lifting devices are supported by four or more sets of hydraulic presses, It consists of a lifting control box, four or more lifting supports, and four or more anti-skid brake devices; when the steel frame support frame is raised or lowered, the lifting control box controls four or more hydraulic press lifting supports to move simultaneously.

When the utility model is assembled, it is located on the ground. First, assemble the hydraulic lifting equipment to connect the fixed rod and fix it around the completed concrete pier column. The trolley frame A unit and B unit are pushed in from the corresponding horizontal sides The bolts are fastened, and the mobile trolley and the fixed trolley are assembled above the shelf. The bending and extension steel formwork equipment and the main beam support truss work vehicle are assembled on the ground, and the hoisting is continued and combined with the mobile trolley.

When the utility model is rising, it is located on the ground. Firstly, the lifting support of the hydraulic lifting equipment is raised to a certain height, and it is connected and fixed with the steel frame support frame. The hydraulic lifting equipment is operated by the lifting control box to raise the steel frame support frame. up to positioning. Push the A unit and B unit of the channel shelf from the corresponding two sides of the ground level with mobile equipment and lock them with bolts. Lower the trolley frame and combine it with the channel frame and fix it with bolts.

When the utility model is lowered, it is located on the ground. First, the lifting support of the hydraulic lifting equipment is raised to a certain height, and it is connected and fixed with the steel frame support frame. The operation lifts up 5 cm to separate the upper and lower frames, and the mobile device is used to pull out the frame to the outside and remove it, and the hydraulic lifting equipment system starts to operate and lower the steel frame support frame to the ground.

When the utility model is propelled, it is necessary to dismantle the base layer frame, lower the steel frame support frame to the highest point of the main beam support truss work vehicle and the propulsion height without interference with the cap beam, extend the front truss forward to a certain length, and remove it. Move the pin of the rear leading truss and connect and fix the rear leading truss with the positioning bar, and use the hydraulic propulsion equipment installed under the main beam supporting truss working vehicle to propel the main beam supporting truss working vehicle; the current leading truss is connected to the next span supporting frame After positioning, connect and fix the front leading truss with the positioning bar, remove the connection between the rear leading truss and the positioning bar, continue to push the main beam supporting truss work vehicle to the steel frame support frame of the next span for positioning, and fix the working vehicle and the mobile trolley with bolts After retracting the connection, the leading truss is positioned and the moving pin is fixed.

After adopting the above structure, the lifting construction system used in the construction of the bridge superstructure of the utility model has at least the following advantages:

1. All components are assembled on the ground. Except for the initial assembly and dismantling, which require the cooperation of mobile cranes, the rest are all automated operations or simple mobile equipment for construction.

2. After structural calculation, only the required support frames and steel materials are used, greatly reducing the use of support frames and steel materials.

3. When the project is in progress, the road under the bridge at the construction site does not need to be closed.

4. When the steel frame support frame is raised and assembled, it is operated on the ground, which greatly reduces the number and time of construction personnel exposed to high altitude operations.

5. The assembly of the steel formwork is designed automatically, eliminating the need for personnel to work at heights and mobile cranes.

6. The equipment for personnel getting on and off has been planned to be attached to the inside or outside of the steel frame support frame, and no additional erection is required.

7. When the steel frame support frame is first set up to the next pier column, the construction personnel do not need to assemble the support bracket at a high altitude.

Description of drawings

Fig. 1 is a known construction system of a bridge superstructure;

Fig. 2 is a known construction system of another kind of bridge superstructure;

Fig. 3 is the perspective view of the utility model;

Fig. 4 is the front view of the utility model;

Fig. 5 is the left view of the utility model;

Fig. 6 is a sectional view of the utility model;

Fig. 7 is a perspective view of the utility model hydraulic lifting equipment;

Fig. 8 is a perspective view of the trolley layer frame of the instinctive utility model;

Fig. 9 is a perspective view of the channel shelf of the present invention;

Fig. 10 is a perspective view of the base shelf of the present invention;

Figure 11 is a schematic diagram of the flexion and expansion of the steel formwork equipment of the present invention;

Fig. 12 is a perspective view of the utility model inner mold working trolley;

Fig. 13A is a schematic diagram of the utility model without advancing the main beam supporting truss working vehicle;

Figure 13B is a schematic diagram of the action of the utility model to propel the main beam supporting truss working vehicle;

Fig. 13C is the action schematic diagram 2 of the utility model to propel the main girder supporting truss working vehicle;

Figure 13D is a schematic diagram of the action of the utility model to propel the main beam supporting truss work vehicle III;

Fig. 13E is a schematic diagram of the utility model to complete the propulsion of the main beam supporting truss working vehicle.

in:

10 Superstructure steel formwork

11 flexion and extension steel formwork

12 Front drive hydraulic equipment of the front guide truss

13 Mobile trolley

14 Leading truss

15 Main beam support truss work vehicle

16 fixed trolley

17 maintenance access

18 Hydraulic jack

19 steel frame support frame

20 Platform Railings

21 trolley shelf

21a Unit A of trolley shelf

21b trolley shelf unit B

22 channel shelf

22a Access shelf A unit

22b channel shelf unit B

23 base shelf

23a Base Shelf A Unit

23b Base shelf B unit

24 stairs

25 Bonding substrate

26 Bridge pier cap beam

27 lifting support

28 Hydraulic lifting equipment

29 hydraulic press

30 Main beam supporting truss front drive hydraulic equipment

31 Bridge piers

32 Connect the fixed rod

33 Steel mold bends telescopic oil pressure rod

34 Spacing telescopic hydraulic rod

35 Roller

36 center support

37 Telescopic oil pressure rod

38 Inner mold working trolley

39 Anti-skid brake device

40 positioning rod

41 trolley guide rail

42 Longitudinal propulsion roller

43 Trolley moving roller

44 connecting rod

45 formwork beams

46 Support trusses

47 Main beam support truss telescopic hydraulic rod

48 Laterally moving steel formwork

49 Move the steel formwork up and down.

detailed description

In order to further explain the technical solution of the utility model, the utility model is described in detail through specific examples below.

Please refer to Fig. 3 to Fig. 13E, the utility model provides a support lifting type construction system used in bridge superstructure construction, which includes an inner mold work trolley 38, a flexion and extension steel formwork 11, a main beam support truss work vehicle 15, Steel frame support frame 19 and hydraulic lifting equipment 28.

The inner mold working trolley 38 of the present utility model is used when pouring the roof and web of the bridge superstructure concrete. It includes a vertically moving steel formwork 49 and a laterally moving steel formwork 48. The up and down moving steel formwork 49 is connected to a hydraulic jack. 18 is used for up and down support and demoulding action, laterally moving steel formwork 48 is connected with telescopic oil pressure rod 37 for horizontal support and demoulding action, and roller 35 is provided under inner mold working trolley 38, and roller 35 has a moving function, hydraulic pressure Jack 18 has support and height adjustment functions.

The main beam supporting truss working vehicle 15 of the present utility model is composed of an upper structural steel formwork 10, a flexion-extensible steel formwork 11, a supporting truss 46, and a formwork beam 45. When the main beam supporting truss working vehicle 15 is folded toward the column center, the main The beam support truss working vehicle 15 is closed and pushed out under the control of the main beam support truss telescopic oil pressure rod 47, and the support truss 46 is closed and retracted under the control of the spacing telescopic oil pressure rod 34; The oil pressure rod 33 is propped upwards, and the steel formwork takes the center of circle support 36 as the center to move and expand, and the formwork crossbeam 45 moves horizontally together at the same time.

The steel frame support frame 19 of the present utility model is arranged around the bridge pier column 31 that has been completed and is about to be constructed. The frame 21 is composed of A unit 21a and B unit 21b; the channel shelf 22A is composed of A unit 22a and B unit 22b; the base shelf 23 is composed of A unit 23a and B unit 23b and the hydraulic jack 18 below ; Units A and B are frames made of corresponding modules, and the corresponding joints of the steel beams of units A and B are provided with joint substrates 25 and are locked and joined by bolts; Roller 35, and keep the distance to facilitate the lifting operation and avoid wear and tear of the frame and pier. The trolley shelf 21 is provided with a trolley guide rail 41 for the mobile trolley 13 to move in the horizontal direction with the trolley moving roller 43; the fixed trolley 16 is located above the trolley shelf 21 and is provided with a longitudinal propulsion roller 42 for the main beam support The truss work vehicle 15 advances when moving to the next span; the main beam supports the truss work vehicle 15 and the support truss 46 on the top of the mobile trolley 13 . The trolley layer frame 21 is provided with a maintenance channel 17 for use during maintenance.

The hydraulic lifting device 28 of the utility model is to provide the power source for driving the steel frame support frame 19 to carry the main beam supporting the truss work vehicle 15 to rise and fall, wherein the hydraulic lifting device 28 includes a lifting support 27, a hydraulic machine 29 for driving up and down, and Anti-skid braking device 39. Lifting support 27 can be used for 90 degrees of horizontal movement. The hydraulic lifting device 28 is connected and fixed around the bridge pier column 31 with a connecting fixed rod 32 .

The supporting elevating construction system used in the construction of the bridge superstructure of the utility model, its construction and assembly operation implementation sequence is described as follows:

Preliminary work: All components of the supporting lifting construction system used in the construction of the bridge superstructure are prefabricated in the factory, and then transported to the construction site for assembly; the bridge piers on the construction site must be completed to the cap beam or predetermined elevation.

Construction steps in the stage of assembly and boarding:

Step 1, the hydraulic lifting device 28 is assembled and fixed around the bridge pier column 31 by connecting the fixed rod 32;

Step 2, move into the A unit 21a and B unit 21b of the trolley shelf 21 at corresponding positions, and lock the corresponding joint base plate 25 with bolts;

Step 3, hoisting the fixed trolley 16 and the mobile trolley 13 above the trolley shelf 21 and placing them on the trolley guide rail 41;

Step 4, hoisting the support truss 46 above the corresponding mobile trolley 13, and connecting the adjacent spacing telescopic hydraulic rods 34;

Step 5, hoist the main beam support truss working trolley 15 above the corresponding mobile trolley 13, and connect the main beam support truss telescopic hydraulic rod 47;

Step 6, install formwork crossbeam 45 above support truss 46 and main beam support row frame working trolley 15;

Step 7, hoisting the flexion-extension steel formwork 11 above the formwork beam 45, and connecting the circle center support 36;

Step 8, test run;

Step 9, raise the lifting support 27 of the hydraulic lifting device 28 to a certain height, and connect and fix it with the steel beam of the trolley shelf 21;

Step 10, the hydraulic lifting equipment 28 raises and positions the trolley shelf 21 from bottom to top, and pushes the A unit 22a and B unit 22b of the channel shelf 22 from the corresponding two sides of the ground level to the channel shelf 22 with bolts Lock and join the base plate 25, lower the trolley shelf 21 and the channel shelf 22 to combine, and lock and join the base plate 25 with bolts;

Step 11, repeat the operation content of steps 9 and 10 until the base layer frame 23 is installed and the main beam supporting truss work vehicle 15 is raised to the construction position;

Step 12, measurement and elevation adjustment;

Step 13, use the hydraulic jack 18 below the base shelf 23 to adjust the elevation.

Construction steps of bridge superstructure construction cycle phase:

Step 1, binding the superstructure bottom plate reinforcement, web reinforcement and installing necessary construction components above the superstructure steel formwork 10;

Step 2. Pour the superstructure floor concrete and web concrete to a height of 30 cm;

Step 3, concrete curing;

Step 4, hoisting, installing and positioning the inner mold working trolley 38;

Step 5, measurement and elevation adjustment;

Step 6, use the hydraulic jack 18 below the inner mold working trolley 38 to adjust the elevation;

Step 7. Binding the roof reinforcement of the superstructure and installing the necessary construction components;

Step 8, pouring superstructure web concrete and roof concrete;

Step 9, concrete maintenance;

Step 10, demoulding the hydraulic jack 18 below the base shelf 23;

Step 11, raise the lifting support 27 of the hydraulic lifting device 28 to a certain height, and connect and fix it with the steel beam of the channel shelf 22;

Step 12, remove the joint base plate 25 bolts between the upper channel shelf 22 and the base shelf 23 and the joint base plate 25 bolts of the base shelf 23 A unit 23a and B unit 23b, and the hydraulic lifting device 28 is raised by 5 cm;

Step 13, use a simple mobile device to pull out and remove the A unit 23a and B unit 23b of the base shelf 23 in the opposite direction of the ground level;

Step 14, the descending channel shelf 22 is in contact with the ground;

Step 15, separate the lifting support 27 and connect it with the steel beam of the channel floor frame 22, and push it to the space between the bridge pier columns 31 at a horizontal 90 degrees to collapse.

As shown in Fig. 13A to Fig. 13E, the construction steps of the main beam supporting truss working vehicle 15 in the advancing cycle stage:

Step 1. The supporting truss 46 moves closer to the main girder supporting truss work vehicle 15 with bolts using the telescopic oil pressure rod 34 at a distance, and the flexion and extension steel formwork 11 uses the steel mold to bend the telescopic oil pressure rod 33 to prop up the steel formwork to match the spacing The action of telescopic oil pressure rod 34 makes steel template upwards bend.

Step 2, the main beam support truss work vehicle 15 and the support truss 46 are pushed outward to the position by the main beam support truss telescopic oil pressure rod 47 of the mobile trolley 13 connected under the main beam support truss work vehicle 15, and all mobile platforms Car 13 is fixed with latch.

Step 3. Remove the moving pins of the front and rear leading trusses 14, and the rear leading truss 14 and the positioning rod 40 are connected and fixed with the pins.

Step 4. Push the leading truss 14 forward to the position with the leading truss hydraulic device 12 and fix it with a bolt.

Step 5. Propel the main beam supporting truss working vehicle 15 and the supporting truss 46 forward with the main beam supporting truss front-drive hydraulic equipment 30, and move the longitudinal propulsion rollers 42 on the mobile trolley 13 and the fixed trolley 16 to position.

Step 6. After the front leading truss 14 is connected to the steel frame support frame 19 of the next span, the leading leading truss 14 and the positioning rod 40 are connected and fixed with bolts, and the rear leading truss 14 is connected with the positioning rod 40 with bolts.

Step 7. Continue to use the front-drive hydraulic equipment 30 of the main beam supporting truss to advance the main beam supporting truss working vehicle 15 and supporting truss 46 to the position. After the car 13 engages and locates, it is fixed with a latch.

Step 8. The leading hydraulic equipment 12 of the leading truss draws the leading truss 14 in the direction of the next span, and fixes the movable latch.

Step 9, remove all the fixed bolts of the mobile trolley 13.

Step 10, the supporting trusses 46 on both sides extend forward with the telescopic hydraulic rods 34 at a distance, and the flexion-extensible steel formwork 11 is retracted downward by bending the telescopic hydraulic rods 33 with the steel mold to flatten the steel formwork.

Step 11, the main beam support truss working vehicle equipment 15 is pushed inward by the main beam support truss telescopic oil pressure rod 47 connected to the mobile trolley 13 below, retracted and positioned, and all the mobile trolleys 13 are fixed with bolts.

So far the assembly of the superstructure steel formwork 10 has been completed.

Step 12: Raise the lifting support 27 of the hydraulic lifting device 28 to a certain height, and connect and fix it with the steel beam of the channel shelf 22 .

Step 13, the hydraulic lifting device 28 raises the channel shelf 22 to the position from bottom to top. The A unit 23a and the B unit 23b pushed into the base layer frame 23 by the corresponding two sides of the ground level are bolted to join the base plate 25, and the descending channel layer frame 22 is combined with the base layer frame 23, and is fixed by bolts. The bonding substrate 25 is bonded.

Step 14, separate the lifting support 27 and connect it with the steel beam of the channel floor frame 22, push it to the space between the bridge piers 31 at 90 degrees horizontally, and lower it to the position.

So far, the superstructure steel formwork 10 and the main girder support truss work vehicle 15 have been positioned for construction.

15. Measurement and elevation adjustment.

16. Use the hydraulic jack 18 below the base shelf 23 to adjust the elevation.

17. Bind the superstructure floor reinforcement and web reinforcement above the superstructure steel formwork 10 and install necessary construction components.

18. Pour the superstructure floor concrete and web concrete to a height of 30 cm.

19. Concrete maintenance.

20. Lower the internal mold work trolley 38 and move the hydraulic jack 18 below the steel formwork 49 to the position, retract the telescopic oil pressure rod 37, retract the laterally moving steel formwork 48 to the position, and complete the demoulding.

21. Lower the hydraulic jack 18 below the inner mold work trolley 38 to make the roller 35 contact the concrete surface.

22. Move the internal mold work trolley 38 to the next span in sequence.

23. Measurement and elevation adjustment.

24. Use the hydraulic jack 18 below the inner mold work trolley 38 to adjust the elevation.

25. Bind the steel bars of the upper structure roof and install the necessary construction components.

26. Pour the superstructure web concrete and roof concrete.

27. Concrete maintenance.

Continuing from step 10 to step 15 of the construction cycle stage of the bridge superstructure, continuing to return to step 1 of the cycle stage with the main girder support truss working vehicle 15 in this stage, so far it is a cycle construction method until the project is completed.

Construction steps for dismantling and getting off the car:

1. Lower the hydraulic jack 18 below the base shelf 23 to demould.

2. Raise the lifting support 27 of the oil pressure lifting device 28 to a certain height, and connect and fix it with the channel floor frame 22 steel beams.

3. Remove the joint substrate 25 bolts between the upper channel shelf 22 and the base shelf 23 and the joint substrate 25 bolts between A unit 23a and B unit 23b of the base shelf 23, and the hydraulic lifting device 28 rises by 5 cm.

4. Use a simple mobile device to pull out the A unit 23a and the B unit 23b of the base shelf 23 in opposite directions at the ground level and remove them.

5. The shelf 22 of the descending channel is until it contacts the ground.

6. Raise the lifting support 27 of the oil pressure lifting device 28 to a certain height, and connect and fix it with the channel floor frame 22 steel beams.

7. Remove the joint substrate 25 bolts between the upper trolley shelf 21 and the channel shelf 22 and the joint substrate 25 bolts of the A unit 22a and B unit 22b of the channel shelf 22, and the hydraulic lifting device 28 rises by 5 cm.

8. Use a simple mobile device to pull out the A unit 22a and the B unit 22b of the channel shelf 22 in opposite directions at the ground level and remove them.

9. Lower the trolley shelf 21 until it touches the ground.

10. Remove the flexion-stretch steel formwork 11.

11. Remove formwork beam 45.

12. Remove the support truss 46.

13. Remove the main beam support truss work vehicle 15.

14. Remove the mobile trolley 13 and the fixed trolley 16.

15. Remove the trolley shelf 21.

16. Remove the hydraulic lifting equipment 28.

17. Transport the dismantled equipment components away from the work area.

The above-mentioned embodiments and drawings do not limit the product form and style of the present utility model, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present utility model.

Claims (5)

1. the lift construction system of a bridge superstructure construction usage, it is characterised in that: comprise the most several interior die worker and make Chassis, two bend and stretch formula steel form, two girder sub-truss work cars, two steel framework bracing frames, four oil pressure elevating equipment, described majority Individual interior die worker's station parking stall is above the base plate watering the bridge superstructure put, and it comprises and moves up and down steel form and lateral Mobile steel template；Described oil pressure elevating equipment assemble be fixed on bridge pier column surrounding and be arranged at steel framework bracing frame and pier stud it Between, oil pressure elevating device drives steel framework bracing frame support main beam sub-truss work car rises and declines, and described two steel frameworks support Setting up the bridge pier column surrounding completing to be constructed before and after being placed in, steel framework bracing frame is positioned at ground and assembles and dismounting, advances girder The sub-truss working vehicle hour, decline steel framework bracing frame.

2. according to the lift construction system of the bridge superstructure construction usage described in claim 1, it is characterised in that: described Interior die worker's station is provided with flexible oil compression rod and drives steel form；It is provided with below interior mould boom truck as mobile interior mould boom truck to fixed The mobile roller that position uses；It is provided with hydraulic jack below interior mould boom truck；Interior mould boom truck puts bridge top knot for watering Structure web and concrete roof shape and use.

3. according to the lift construction system of the bridge superstructure construction usage described in claim 1, it is characterised in that: described Two bend and stretch formula steel form and steel form equipment that two girder sub-truss work cars are bridge superstructure, bend and stretch formula steel form and There is fixing chassis with mobile trolley used below girder sub-truss work car；Bend and stretch formula steel form use oil pressure expansion link control to Upper Qu Qiyu extends downwardly from flattening above girder sub-truss；Girder sub-truss work car use oil pressure expansion link control to Interior propelling engages and extrapolated movement, mobile to when positioning, and uses latch location.

4. according to the lift construction system of the bridge superstructure construction usage described in claim 1, it is characterised in that: described Steel framework bracing frame divides into chassis layer frame, channel layer frame and pedestal layer frame, and each layer of frame is divided into A unit and unit B, and A, B are mono- Unit is the framework that corresponding modularity makes, and is provided with joint substrate and uses bolt to lock at A, unit B girder steel re-spective engagement Engaging, the passage pedal of steel framework bracing frame, platform and stair activity use bolt and latch to engage, between steel framework bracing frame and pier stud It is provided with roller and keeps spacing.

5. according to the lift construction system of the bridge superstructure construction usage described in claim 1, it is characterised in that: described Four oil pressure elevating equipment are arranged between steel framework bracing frame and pier stud, when each oil pressure elevating equipment provides steel framework bracing frame to lift Power resources, described oil pressure elevating equipment is lifted supporting, elevating control case, four or many several by four or many arrays hydraulic press Lifting supporting, four or many several on-slip brake devices are formed；Steel framework bracing frame lifting time by elevating control case control four groups or The lifting supporting action simultaneously of the most several hydraulic presses.