KR20020074130A - Methodology in one united body for pre-fabrication upper part of bridge using lifting System with push pull mechanism. - Google Patents

Abstract

PURPOSE: An embodying installation method of a prefabrication bridge upper structure using a push-pull and lifting system is provided to considerably reduce a construction period and a construction cost of a large scale bridge. CONSTITUTION: The embodying installation method of a prefabrication bridge upper structure using a push-pull and lifting system for the change or establishment of the bridge upper structure comprises the steps of; installing a lift support, a strand jack and strand jack support as the push-pull system; installing a strand jack fixed plate and upper part bridge guide beam; installing a hydraulic jack, a hydraulic jack support and a skid plate for moving the lift support, and installing a skid rail and base; installing a hydraulic jack and a hydraulic jack support for pushing an upper part bridge segment, installing a support frame device for moving the segment, and installing a sand jack for lowering a height of the upper part bridge.

Description

Methodology in one united body for pre-fabrication upper part of bridge using lifting system with push pull mechanism.} Prefabrication

The purpose of the present invention is to install and transport the prefabrication bridge top structure in the factory after installation in the factory in order to maintain air quality, cost saving, and transportation during the front replacement and new construction of the bridge top structure. It is divided into a bridge and a land-mounted bridge, and relates to a method of installing using a push-pull and lifting system by integrating a bridge superstructure one by one.

As a general superstructure installation method, there are various problems in applying the segment installation method or the FCM installation method. In other words, the segment installation method and the FCM method are inadequate for large bridges or offshore bridges due to the difficulty of air delay, traffic opening, cost increase, and camber adjustment. And the launching installation method is similar to the unification method, but this method is to complete the installation by integrating the upper structure of the bridge and skidding. Such a launching method requires a vast workshop on the back of a separate bridge. Even in the case of straight small bridges, it is not possible to apply the launching method when it is difficult to secure a backside work site. In addition, in the case of offshore bridges, it is more difficult than in the case of the land installation work using the existing method, and the increase in the number of ports such as air delay and transportation of each segment brings about difficulty of cost increase and dimension adjustment of camber. The existing construction method is similar to this method, but it is possible to install marine bridges and fixed offshore structures, but this is only possible for three spans.

The present invention is to solve the above problems by integrating the upper structure of the bridge by one span by installing the push-pull and lifting device at one time by reducing the air, cost reduction, speed of transportation and assembly of each segment in advance It is very easy to adjust.

In the case of offshore bridges, the existing construction method is more difficult than the land installation work, and the cost increases due to the increased number of ports such as air delay and transportation of each segment. Push-pull and lifting devices are installed on the barge. The integrated structure of the upper bridge structure using this method reduces the air and installs it by one span, thus reducing cost, speeding up traffic, and assembling each segment. easy. Therefore, when the integrated installation method of the prefabrication bridge upper structure using the push-pull and the lifting system of the present invention can be easily solved the above problems. In addition, in the case of offshore bridges, lift posts are installed on the pier so that it is possible to lift more than two spans, two spans, and four spans.

Figure 1 is a detailed lift-post lifting system used in land installations, consisting of a push-pull strand jack, strand wire, strand jack support plate, and lift post device. Figure 2 is a lift-frame detail view consisting of strand jacks, strand wires, strand jack backing plates and lift frame devices as push-pull and lifting systems in offshore installations. 3 is a detailed view of the strand jack fixing plate-top bridge connecting beam and the top bridge guide beam, which is composed of a strand book process plate and a top bridge guide beam device. 4 is a detailed lift-post foundation and hydro jack and support plate consisting of hydro jacks, hydro jack support plates, lift post skid plates, lift post skid rails, hydro jack saddles, and lift post keyholes used in land installations. . FIG. 5 is a detailed view of the sand jack, which is a sand jack used for setting the upper bridge to the bridge apparatus after connecting the upper segments, and includes a sand jack upper device, a sand jack lower device, sand, and a nozzle device. Figure 6 is a barge mooring detail and is used at sea installation and consists of barge, mooring line, anchor device. 7 is a detailed view of the upper portion of the bridge segment, which is composed of a bridge upper segment, a sand jack, a bridge bridge device, a bridge segment hydro jack, a bridge segment hydro jack support, and a bridge upper segment spot. FIG. 8 is a detailed view for lifting a new bridge superstructure between two previously constructed bridge upper structures, which is a strand jack device for lifting a bridge upper structure, and an upper lifting girder installed in an existing bridge superstructure for lifting an upper structure. -Put the strand jack on the full system. It is installed under the bridge superstructure to be installed as a lower lifting girder and a strand jack fixing plate is installed. Figure 9 is very difficult to accurately adjust the size of the barge due to the movement of the barge when installing the upper structure of the bridge between the offshore bridge. Therefore, the anchoring chain block is installed on the bridge superstructure and the pier to adjust the dimensions of the left and right, before and after the final. 10 is installed using a lifting frame and a lifting girders when installing the upper portion of the bridge over the two spans, four spans, and both ends of the bridge. FIG. 11 is a detailed view of a lifting frame when installing two or more spans, four or more spans, and a bridge upper structure at both ends of a marine bridge. Figure 12 is an overall assembly view of the lifting on the bridge superstructure. FIG. 13 is an overall assembly view of the land bridge superstructure when moved laterally for lifting after lifting. 14 is an overall assembly diagram of the lifting using barges when installing the two-span superstructure of the offshore bridge. 15 is an overall assembly diagram for setting the upper structure to the piers by using a barge when installing the two-span superstructure of the offshore bridge. Figure 16 is an overall assembly of the lifting using barges when installing the middle span superstructure of offshore bridges. Fig. 17 is an overall assembly diagram of the lifting using barges when installing the bridge superstructure on both ends of the marine bridge.

<Explanation of symbols for main parts of drawing>

1.STRAND JACK OF PUSH-PULL SYSTEM

2. Strand wire

3. Strand JACK SUPPORT

4. LIFT POST

5. LIFT FRAME

6. Strand JACK FIXED PLATE AND UPPER PART BRIDGE CONNECTION BEAM

7. UPPER PART BRIDGE GUlDE BEAM

8. LIFT POST SKID PLATE

9. LIFT POST HYDRAULIC JACK

10. LIFT POST HYDRAULIC JACK SUPPORT

LIFT POST HYDRAULIC JACK SADDLE

12. LIFT POST SKID RAIL

13. LIFT POST FOUNDATION

14. Sand Jack Upper Unit (SAND JACK UPPER PART)

15.SAND JAND LOWER PART

16. NOZZLE

17. SAND

18. BRIDGE TRANSPORTATION BARGE

19. BARGE MOORING LINE

19-1 BARGE LOCATION CONTROL WINCH

20. BARGE ANCHOR

21.BRIDGE UPPER SEGMENT

22.SAND JACK

23. BRIDGE SHOE

24. UPPER BIRDGE SEGMENT SUPPORT

25. BIRDGE SEGMENT HYDRAULIC JACK

26.BRIDGE SEGMENT HYDRAULIC JACK SUPPORT

27.PUSH-PULL SYSTEM OF STRAND JACK FOR LIFTING OF CENTER UPPER BRIDGE PART

28. UPPER LIFTING GIRDER

29.LOWER LIFTING GIRDER

30. LOCATION CONTROL CHAIN BLOCK

31. LIFTTING FRAME

32.STRAND JACK SUPPORT

Hereinafter, described in detail by the accompanying drawings as follows.

1 is a device for lifting a bridge superstructure in a land installation. 1) A strand jack is a device used to lift a bridge superstructure and operates as a hydraulic push-pull system. ) Strand wire is used for lifting the upper structure by being installed in the strand jack, and it is mainly used for tensile load and is connected to the strand jack and the strand jack fixing plate to lift the upper structure, and 3) strand jack support plate. (STRAND JACK SUPPORT) is a device fixed to the upper part of a lift post or lift frame to fix a strand jack.It is a device that transfers a load to the strand jack to a lift post or a lift frame when lifting a bridge structure. LIFT POST) transfers the upper weight of the bridge to the ground foundation when lifting the bridge superstructure offshore. It is a device that supports the strand jack.

Figure 2 is a device for lifting the bridge superstructure in the offshore installation 1) Strand Jack is a device used to lift the bridge superstructure is operated by a hydraulic push-pull system, 2 Strand wire is installed in the strand jack to lift the upper structure, and the tension load is mainly used. The middle wire is connected to the strand jack and the strand jack fixing plate to lift the upper structure, and 3) the strand jack support plate. (STRAND JACK SUPPORT) is a device fixed to the upper part of a lift post or a lift frame to fix a strand jack. When lifting a bridge upper structure, a device for transmitting a load to the strand jack to a lift post or a lift frame. LIFT POST transfers the weight of the bridge upper structure to the ground foundation when lifting the bridge superstructure on land. 5) Lift frame (LIFT FRAME) is a device that transfers the weight of the bridge upper structure to the transport barge base and supports the strand jack when lifting the bridge superstructure offshore.

FIG. 3 is a detailed view of the strand jack fixing plate-top bridge connection and the upper bridge guide beam. 6) The strand jack fixing plate and the upper bridge beam is fixed to the bridge superstructure as the upper structure and the upper structure. A device that converts the load of the strand jack into the upper structure by connecting with the lifting device. 7) UPPER PART BRIDGE GUIDE BEAM is connected to the lower part of the bridge upper structure to lift the upper structure during construction of land bridge. It is a guide device for lifting through the center of the lift post to prevent shaking during maintenance and to maintain structural stability with the lift post.

4 is a detailed view of the lift-post foundation and hydro jack and backing plate. 8) The LIFT POST SKID PLATE is a hydro jack for lifting the superstructure during the bridge installation on land and then setting it on the bridge device. The device is installed to minimize the friction between the lifting post and skidrail when moving the lifting post, and to minimize the contact stress of the lift post. 9) The LIFT POST HYDRAULIC JACK is a bridge installation on land. A load device that is installed to move the lifting posts for lifting the city superstructure and then setting it on the bridge device of the piers, 10) LIFT POST HYDRAULIC JACK SUPPORT lifts the superstructure when installing bridges on land And then move the lifting posts for setting to the bridge device on the piers. 11) LIFT POST HYDRAULIC JACK SADDLE is a lifting post for lifting a superstructure when installing a bridge on land and then setting it on a bridge device. It is a device installed to prevent crushing of the lift post by pressurization of the hydro jack, which is a load device installed to move the welding device, and is welded to the lift post. 12) LIFT POST SKID RAIL is a bridge on land. Device installed on the lift post foundation to minimize friction and smooth movement when lifting posts are moved to hydro jacks for lifting the superstructures and then installed on the bridge device of the piers, 13) LIFT POST foundation FOUNDATION) transmits superstructure loads to the ground when lifting bridges. Equipment

5 is a sand jack detail view, which is a height lowering device for setting the bridge structure to the bridge device. 14) Sand jack upper part is a height used for the final setting of the bridge structure to the bridge device. SAND JACK LOWER PART is an accessory to a lowering sandjack, which is used for the final setting of the upper structure to the seating device. Is transferred to the sand through the sand jack upper unit, and has sufficient strength to prevent the sand from flowing out sideways. Cylindrical unit, 16) NOZZLE is used for final setting of the bridge structure to the bridge unit. As a part of the height lowering sandjack, the sand removal which causes the automatic height lowering by removing the sand when lowering the height NOZZLE DEVICE, 17) SAND is an accessory of the height lowering sandjack used for final setting of the upper structure of the cross-section structure. The sand acts as a hydraulic pressure when the height is lowered.

6 is a detailed view of barges used when installing and transporting the upper structure of the bridge by sea. 18) BRIDGE TRANSPORTATION BARGE is a pontoon type which uses the difference between tides when installing the bridge. BARGE MOORING LlNE is a rugged wire device for adjusting the movement, angle, etc. of barge when lifting the bridge superstructure when installing offshore bridges. A device to prevent the collision between the exact position and the angle when moving between the piers and the piers to install the superstructure. 20) The barge anchor is used to move the barge when lifting the bridge superstructure when installing the offshore bridge. It is a device to fix the friable wire to the ground

7 is a diagram illustrating the installation of the upper part of the bridge structure. Put on top of the superstructure, 22) SAND JACK is a height lowering device used to finally set the upper structure to the bridge device, 23) BRIDGE SHOE transfers the vehicle load to the bridge. Apparatus, 24) The upper bridge segment spot (UPPER BRIDGE SEGMENT SUPPORT) is made larger than the size between the piers in the offshore and onshore bridges. After the pier is pushed to the piers to protect the device, height adjustment and sliding to rest Rescue Device, 25) Bridge Segment Hydro Jack (BRIDGE SEGMENT HYDRAULIC JACK) is made larger than the size between the piers in the offshore and onshore bridges. 26) BRIDGE SEGMENT HYDRAULIC JACK SUPPORT is a part of the bridge segment hydro jack support that is built larger than the size between the piers in the offshore and onshore bridges. It is a supporting device of hydro jack, which is a load device for segmenting and placing it on the superstructure for a while and pushing it on the piers after lifting.

8 is a strand jack which is a push-pull system for lifting a bridge upper structure when a new bridge superstructure is installed between two bridge upper structures. 28) An upper lifting installed on an existing bridge superstructure for lifting a superstructure. Place strand jack as girder. 29) It is installed in the lower part of the bridge superstructure to be installed as the lower lifting girder and the strand jack fixing plate is installed.

Figure 9 shows that it is very difficult to precisely adjust the dimensions due to the movement of the barge when installing the upper structure of the bridge between the two spans of the marine bridge.30) Finally, the anchor chain eye is installed on the upper structure of the bridge and the bridge. Before and after, adjust the left and right dimensions. Fig. 10 is used for installation of offshore bridges with two spans, two ends spans, and four spans. 31) A strand is installed on a lifting frame and 32) a strand jack spot and a 28,29) lifting girder is installed on the opposite side. being.

11 is a detailed view of installing a strand on a 31) lifting frame and a 32) strand jack spot, which are used when installing a bridge over two spans, both end spans and four spans.

FIG. 12 is an assembly view of the entire lifting system upon lifting against the land bridge superstructure, and FIG. 13 is an overall assembly view of the moving system upon moving laterally for final setting after lifting the land bridge superstructure. 14 is an overall assembly diagram of a lifting system for lifting, using barges when installing the two span superstructures of a marine bridge. 15 is an assembly diagram of the entire system for setting the superstructure to the piers using barges when installing the two-span superstructure of the offshore bridge. Figure 16 is an overall assembly of the lifting system for lifting, using barges when installing the mid-span superstructure on offshore bridges. Fig. 17 is a complete system assembly drawing for lifting using barges when installing the bridge superstructure on both ends of a marine bridge.

Therefore, since the upper structure of the bridge is integrated and installed by using the above-described device, it is possible to shorten the air and install it by one span so that the cost reduction, the speed of the traffic, and the assembly of each segment are made in advance, so it is very easy to adjust the camber.

As described above, the present invention, the integrated installation method of the upper structure of the bridge using the push-pull and the lifting system (1) to smooth the traffic by reducing the air during the replacement of the entire bridge superstructure and new bridge construction To minimize pain. (2) Various processes are performed in the factory, which can maximize air shortening and cost reduction. (3) Since the upper structure of the bridge is assembled in advance, there is almost no bolting, so the ease of work and the flow of traffic can be improved and the field work can be minimized. (3) It is easy to check and adjust the dimensions of the camber as it has been pre-spun assembly. (4) The utilization rate can be maximized as it is also suitable for the superstructure superstructure replacement work. (5) It is suitable for the construction of new bridges or replacement of bridges in heavy traffic areas. (6) Since the concrete can be installed after each span of the upper concrete bridge, it can shorten the air and speed up the traffic, thus maximizing the effect. (7) It can be applied during the complete dismantling of the existing bridge.

Claims (2)

Regarding the integrated installation method of the prefabrication superstructure using the push-pull and lifting system in the front replacement and new construction of the bridge superstructure, ① Lift Spot Installation Step, Strand Jack and Strand Jack Support Plate Installation Step, ② Strand Jack Fixing Plate and Bridge Top Guide Beam Installation Step, ③ Hydro Jack, Hydro Jack Support, Saddle Device Skid Plate for Moving Lift Post Installation step, skid rail and foundation installation step, ④ hydro jack to push the bridge superstructure segment, hydro jack support device, spot frame device to move the bridge superstructure segment, sand jack installation step to lower the height of the bridge superstructure . Regarding the method of integrating a prefabrication superstructure by using a push-pull and a lifting system when installing the superstructure of a bridge, ① Lift frame installation step, strand jack and strand jack support plate device installation step, ② Strand jack fixing plate and bridge upper guide beam device installation step, ③ Mooring machining device of transport barge for moving bridge between bridges, winch for position adjustment And anchor device installation step ④ Hydro jack for pushing the superstructure segment, hydro jack support device, spot frame device for moving the bridge upper structure segment, sand jack device for lowering the height of the bridge superstructure. Upper and lower lifting girders for structural installation, push-pull system strand jack installation step for lifting the bridge superstructure, ⑥ chain block installation step for positioning the bridge, ⑦ span of both ends, 2 spans and 4 spans or more Steps to install lifting frame and lifting girders during installation.