Rapid pass-keeping truss device for bridge flood damage and construction method

Abstract

The invention discloses a bridge flood damage rapid pass keeping truss device and a construction method.The bridge flood damage rapid pass keeping truss device comprises a truss body, a pilot truss, a deflection adjusting device, a truss pushing device, a truss jacking device, a rolling supporting device, a counter-force device and an anchoring device, and the pilot truss can be detachably installed at the front end of the truss body; the deflection adjusting device is installed at the bottom of the front side of the pilot truss, the truss jacking devices are detachably installed at the front end and the rear end of the truss body respectively, and the rolling supporting device is arranged below the truss body, makes rolling contact with the truss body and is used for supporting the truss body in a rolling mode. The counter-force device is anchored on a roadbed and / or a bridge floor through the anchoring device, the truss pushing device is connected with the counter-force device, and the truss pushing device is supported by the counter-force device and used for pushing the truss body to move forwards on the rolling supporting device. According to the method, the rapid communication keeping construction of the water destroyed bridge can be completed on the basis of not using large hoisting equipment, and the construction cost is low.

Description

Technical Field

[0001] This invention relates to the field of bridge construction technology, and in particular to a rapid bridge maintenance truss device and construction method for bridges damaged by floods. Background Technology

[0002] With the development of the construction industry, bridge construction technology is also steadily advancing, and the number and scale of bridge projects are constantly expanding. When a bridge is under construction or when its superstructure is damaged and needs replacement, common methods include bridge erection using bridge-building machines, in-situ installation using gantry cranes, and installation using large lifting equipment (crawler cranes). These methods are greatly affected by the site and environment, and often require significant manpower and resources when traffic conditions are poor or the surrounding geological environment is limited. Temporary construction bridges and the maintenance of traffic flow on bridges damaged by floods typically involve erecting trusses and Bailey bridges, which also requires large lifting machinery. In remote mountainous areas, large lifting equipment often cannot arrive on time, hindering the timely and rapid restoration of traffic flow on damaged bridges. Moreover, using large lifting equipment for construction incurs high manpower and material costs. Summary of the Invention

[0003] The purpose of this invention is to provide a rapid bridge reopening truss device and construction method for bridges damaged by floods, so as to solve the problems existing in the prior art. It can complete the rapid reopening of bridges damaged by floods without the use of large lifting equipment, and the construction cost is low.

[0004] To achieve the above objectives, the present invention provides the following solution: This invention provides a rapid bridge reopening truss device after flood damage, comprising a truss body, a pilot truss, a deflection adjustment device, a truss jacking device, a truss lifting device, a rolling support device, a reaction device, and an anchoring device. The pilot truss is detachably mounted on the front end of the truss body. The deflection adjustment device is mounted on the front bottom of the pilot truss and is used to adjust the overall deflection of the pilot truss and the truss body by using the support structure as a support after reaching the opposite support structure. One truss lifting device can be detachably mounted on each of the front and rear ends of the truss body. The rolling support device is located below the truss body and rolls in contact with the truss body to provide rolling support. The reaction device is anchored to the roadbed and / or bridge deck via the anchoring device. The truss jacking device is connected to the reaction device and, supported by the reaction device, pushes the truss body forward on the rolling support device.

[0005] Preferably, the deflection adjustment device includes a support beam and a telescopic lifting device. One end of the support beam is rotatably connected to the front bottom of the pilot truss, and the other end is a free end. Support rollers are fixedly installed on the bottom surface of the support beam. The telescopic lifting device is disposed above the support beam, and both ends of the telescopic lifting device are rotatably connected to the pilot truss and the free end of the support beam, respectively. After reaching the opposite supportable structure, the deflection adjustment device is supported on the supportable structure by the support rollers at the bottom of the support beam, and the angle between the support beam and the pilot truss is adjusted by the extension and retraction of the telescopic lifting device to achieve deflection adjustment.

[0006] Preferably, the truss jacking device includes a lifting cylinder, a pushing cylinder, and a slide rail assembly. The slide rail assembly includes a slide rail and a slider. The slide rail is used to anchor to the roadbed and / or bridge deck. The slider is slidably disposed on the slide rail. The cylinder of the pushing cylinder is rotatably connected to the reaction device. The piston rod of the pushing cylinder is rotatably connected to one side of the piston rod of the lifting cylinder. The cylinder of the lifting cylinder is fixed to the slider. The piston rod of the lifting cylinder can extend and retract to tighten or loosen the truss body.

[0007] Preferably, the truss lifting device includes a lifting frame, which includes a lifting beam and lifting telescopic supports fixed to both ends of the lifting beam. The truss body and the lifting beam can be detachably connected.

[0008] Preferably, a support plate is installed at the bottom end of the lifting telescopic support column.

[0009] Preferably, the rolling support device includes a base and a plurality of rollers rotatably connected to the base, the base being anchored to the roadbed and / or bridge deck by the anchoring device.

[0010] Preferably, the telescopic lifting device is a hydraulic cylinder.

[0011] Preferably, the lifting telescopic support includes a fixed column, a movable column, and a telescopic cylinder. The upper end of the fixed column is fixed to the lifting beam, the movable column is slidably connected to the lower end of the fixed column, and the telescopic cylinder connects the fixed column and the movable column, driving the movable column to move up and down.

[0012] This invention also provides a method for rapid bridge reopening after water damage, using the aforementioned rapid bridge reopening truss device, and includes the following steps: (1) According to the needs of the construction site, the reaction device is anchored to the roadbed and / or bridge surface through the anchoring device, the truss jacking device is connected to the reaction device, and the rolling support device is anchored to the roadbed and / or bridge surface through the anchoring device. (2) Transport the truss to the location where the bridge for traffic control needs to be erected and assemble it to obtain the main body of the truss; install the pilot truss at the front end of the main body of the truss, install the deflection adjustment device at the front end of the pilot truss, and install the truss lifting device at the front and rear ends of the main body of the truss respectively; at this time, the main body of the truss is placed on the rolling support device, and the truss pushing device is located below the main body of the truss. (3) The truss body is pushed forward by the truss jacking device. After the deflection adjustment device reaches the opposite supportable structure, the deflection adjustment device is activated. The deflection adjustment device uses the supportable structure as support to adjust the overall deflection of the pilot truss and the truss body. The truss body is pushed forward until the truss body through the hole reaches the predetermined position. (4) Start the truss lifting device at both ends, so that the truss lifting device is supported on the cap beam, and then remove the pilot truss and the deflection adjustment device; (5) Adjust the truss lifting device so that the main body of the truss rests on the cap beam; (6) Construct the bridge deck and ancillary structures to ensure the smooth flow of traffic and realize the function of bridge traffic maintenance.

[0013] The present invention achieves the following technical effects compared to the prior art: The present invention provides a rapid bridge reopening truss device and construction method for bridges damaged by floods. The truss body is supported by a rolling support device, with rolling contact between the two. A truss jacking device, supported by a reaction force device and an anchoring device, pushes the truss body forward on the rolling support device. A pilot truss and a deflection adjustment device ensure the truss body smoothly passes through the opening. After the truss body passes through the opening, a truss lifting device provides temporary support, allowing for the removal of the pilot truss and deflection adjustment device. After removing the pilot truss and deflection adjustment device, the truss lifting device lowers the truss body onto the cap beam, completing the truss body construction. Then, the bridge deck and ancillary structures are constructed to maintain bridge access. Using this device, rapid reopening of flood-damaged bridges can be achieved without the need for large lifting equipment, saving construction costs. It is particularly suitable for remote mountainous areas with poor transportation and limited surrounding geological conditions. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the bridge flood damage rapid clearance truss device provided by the present invention before the passageway; Figure 2 A schematic diagram of the bridge flood damage rapid clearance truss device provided by the present invention in a passageway; Figure 3 A schematic diagram of the bridge flood damage rapid access truss device provided by the present invention, wherein the deflection is adjusted in the passage through a deflection adjustment device. Figure 4 This is a schematic diagram of the connection structure between the truss body and the truss lifting device when viewed from the side. Figure 5 This is a schematic diagram of the connection structure between the pilot truss and the deflection adjustment device in this invention; Figure 6 This is a structural schematic diagram of the truss jacking device in the invention. Figure 7 This is a schematic diagram of the rolling support device in the invention.

[0016] In the diagram: 1-Trunk main body, 2-Pilot truss, 3-Deflection adjustment device, 31-Support beam, 32-Telescopic lifting device, 33-Support roller, 4-Trunk jacking device, 41-Lifting cylinder, 42-Pushing cylinder, 43-Slide rail, 44-Slider, 5-Trunk jacking device, 51-Lifting crossbeam, 52-Lifting telescopic support column, 521-Fixed column, 522-Movable column, 523-Telescopic cylinder, 53-Support plate, 6-Rolling support device, 61-Base, 62-Roller, 7-Reaction device, 8-Anchoring device, 9-Roadbed, 10-Bridge deck, 11-Cap beam. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] The purpose of this invention is to provide a rapid bridge reopening truss device and construction method for bridges damaged by floods, in order to solve the problems existing in the prior art. It can complete the rapid reopening of flood-damaged bridges without the use of large lifting equipment, and the construction cost is low.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 like Figures 1-7 As shown, this embodiment provides a rapid bridge reopening truss device after flood damage, including a truss body 1, a pilot truss 2, a deflection adjustment device 3, a truss jacking device 4, a truss lifting device 5, a rolling support device 6, a reaction force device 7, and an anchoring device 8. The pilot truss 2 can be detachably installed at the front end of the truss body 1. The deflection adjustment device 3 is installed at the bottom front side of the pilot truss 2, and is used to adjust the pilot truss 2 and the truss body 1 as a whole after reaching the opposite supportable structure. For deflection adjustment, a truss lifting device 5 can be detached and installed at each of the front and rear ends of the truss body 1. A rolling support device 6 is set below the truss body 1, and the rolling support device 6 is in rolling contact with the truss body 1 to support the truss body 1. The reaction device 7 is anchored to the roadbed 9 and / or bridge deck 10 through the anchoring device 8. The truss jacking device 4 is connected to the reaction device 7. Under the support of the reaction device 7, the truss jacking device 4 is used to jack the truss body 1 forward on the rolling support device 6.

[0021] This device supports the truss body 1 via a rolling support device 6, with low friction due to the rolling contact between the two, facilitating the forward movement of the truss body 1. The truss jacking device 4, supported by the reaction device 7 and anchoring device 8, pushes the truss body 1 forward on the rolling support device 6. Through the pilot truss 2 and deflection adjustment device 3, the truss body 1 smoothly passes through the hole and enters its correct position. After the truss body 1 passes through the hole, the truss lifting device 5 provides temporary support, allowing for the removal of the pilot truss 2 and deflection adjustment device 3. After removing the pilot truss 2 and deflection adjustment device 3, the truss lifting device 5 lowers the truss body 1 onto the cap beam 11, completing the construction of the truss body 1. Then, the bridge deck and ancillary structures are constructed to maintain bridge traffic, achieving the bridge's traffic maintenance function. Using this device, rapid traffic maintenance of flood-damaged bridges can be completed without the need for large lifting equipment, saving construction costs. It is particularly suitable for remote mountainous areas with poor transportation and limited surrounding geological conditions.

[0022] In this embodiment, the deflection adjustment device 3 includes a support beam 31 and a telescopic lifting device 32. The telescopic lifting device 32 can be a hydraulic cylinder. One end of the support beam 31 is rotatably connected to the bottom front side of the pilot truss 2, and the other end is a free end. Support rollers 33 are fixedly installed on the bottom surface of the support beam 31. The telescopic lifting device 32 is located above the support beam 31. Both ends of the telescopic lifting device 32 are rotatably connected to the pilot truss 2 and the free end of the support beam 31, respectively. After the deflection adjustment device 3 reaches the opposite supportable structure (such as the previous span bridge deck 10), it is supported on the supportable structure by the support rollers 33 at the bottom of the support beam 31. The angle between the support beam 31 and the pilot truss 2 is adjusted by the extension and retraction of the telescopic lifting device 32 to achieve the deflection adjustment, so that the pilot truss 2 and the truss body 1 can remain horizontal and smoothly pass through the hole to reach the predetermined position.

[0023] In this embodiment, the truss jacking device 4 includes a lifting cylinder 41, a pushing cylinder 42, and a slide rail assembly. The slide rail assembly includes a slide rail 43 and a slider 44. The slide rail 43 is anchored to the roadbed 9 and / or the bridge deck 10. The slider 44 is slidably mounted on the slide rail 43. The cylinder of the pushing cylinder 42 is rotatably connected to the reaction device 7. The piston rod of the pushing cylinder 42 is rotatably connected to one side of the piston rod of the lifting cylinder 41. The cylinder of the lifting cylinder 41 is fixed to the slider 44. The piston rod of the lifting cylinder 41 can extend and retract to tighten or loosen the truss body 1. During jacking, the piston rod of the lifting cylinder 41 extends to tighten the truss body 1, and then the piston rod of the pushing cylinder 42 extends to push the lifting cylinder 41 to move along the slide rail 43. A rubber pad to increase friction can be provided on the contact surface between the piston rod of the lifting cylinder 41 and the truss body 1 to drive the truss body 1 forward through friction. After each push, the piston rod of the lifting cylinder 41 retracts to its original position, and the piston rod of the pushing cylinder 42 retracts to its original position. This process is repeated to achieve continuous pushing of the truss body 1.

[0024] In this embodiment, the truss lifting device 5 includes a lifting frame, which includes a lifting beam 51 and lifting telescopic supports 52 fixed to both ends of the lifting beam 51. The truss body 1 and the lifting beam 51 can be detachably connected. After the truss body 1 is in place through the hole, the lifting telescopic supports 52 are extended and supported on the cap beam 11 to provide temporary support for the truss body 1, so that the pilot truss 2 and the deflection adjustment device 3 can be removed.

[0025] In this embodiment, a support plate 53 is installed at the bottom of the lifting telescopic support column 52, which can improve the stability of the support.

[0026] In this embodiment, the rolling support device 6 includes a base 61 and a plurality of rollers 62 rotatably connected to the base 61. The base 61 is anchored to the roadbed 9 and / or bridge deck 10 by an anchoring device 8. The rolling support device 6 can also be an existing heavy-duty displacement device, which is placed upside down on the roadbed 9 and / or bridge deck 10 and then anchored.

[0027] In this embodiment, the lifting telescopic support column 52 includes a fixed column 521, a movable column 522, and a telescopic cylinder 523. The upper end of the fixed column 521 is fixed to the lifting beam 51, and the movable column 522 is slidably connected to the lower end of the fixed column 521. The telescopic cylinder 523 connects the fixed column 521 and the movable column 522, and drives the movable column 522 to move up and down. The structure is simple and the control is convenient.

[0028] Example 2 This embodiment provides a method for rapid bridge reopening after water damage, using the bridge rapid reopening truss device described in Embodiment 1, including the following steps: (1) According to the needs of the construction site, the reaction device 7 is anchored to the appropriate position of the roadbed 9 and / or bridge deck 10 through the anchoring device 8, the truss jacking device 4 is connected to the reaction device 7, and the rolling support device 6 is anchored to the appropriate position of the roadbed 9 and / or bridge deck 10 through the anchoring device 8; the anchoring method of the anchoring device 8 can be the same as the method of chemical anchoring with rebar. (2) Transport the truss to the location where the bridge for traffic control needs to be erected and assemble it to obtain the truss body 1; install the pilot truss 2 at the front end of the truss body 1, install the deflection adjustment device 3 at the front end of the pilot truss 2, and install the truss lifting device 5 at the front and rear ends of the truss body 1 respectively; at this time, the truss body 1 is placed on the rolling support device 6, and the truss pushing device 4 is located below the truss body 1. (3) The truss body 1 is pushed forward by the truss jacking device 4. After the support beam 31 of the deflection adjustment device 3 reaches and contacts the previous span bridge deck 10, the deflection adjustment device 3 is activated. The deflection adjustment device 3 uses the previous span bridge deck 10 as support and adjusts the overall deflection of the pilot truss 2 and the truss body 1 by the telescopic jacking device 32, so that the overall deflection of the pilot truss 2 and the truss body 1 remains horizontal. The truss body 1 is pushed forward until the truss body 1 passes through the hole smoothly and reaches the predetermined position. (4) Start the truss lifting device 5 at both ends, lift the telescopic support column 52 to extend and support the cap beam 11, temporarily support the truss body 1, and then remove the pilot truss 2 and the deflection adjustment device 3. (5) Adjust the truss lifting device 5 to shorten the lifting telescopic support 52, lower the truss body 1, and let the lower chord of the truss body 1 fall on the cap beam 11. (6) The number of bridge deck panels and guardrails and other auxiliary structures will be constructed after the number of bridge deck panels (main body 1) installed is determined based on the actual site conditions. The bridge deck panels and guardrails and other auxiliary structures will be constructed after the number of bridge deck panels installed meets the site requirements, so as to realize the function of bridge traffic control.

[0029] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A bridge water damage rapid access truss device, characterized in that: The bridge water damage quick access truss device comprises a truss body, a pilot truss, a deflection adjusting device, a truss pushing device, a truss jacking device, a rolling support device, a counterforce device and an anchoring device, the pilot truss is detachably installed at the front end of the truss body, the deflection adjusting device is installed at the front bottom of the pilot truss, is used for adjusting the deflection of the whole pilot truss and the truss body after reaching the opposite supportable structure, the front and rear ends of the truss body are each detachably installed with the truss jacking device, the rolling support device is arranged below the truss body, the rolling support device is in rolling contact with the truss body, is used for rolling supporting the truss body, the counterforce device is anchored on the roadbed and / or the bridge deck through the anchoring device, the truss pushing device is connected with the counterforce device, and the truss pushing device is used for pushing the truss body to move forward on the rolling support device under the support of the counterforce device.

2. The bridge water damage rapid access truss device according to claim 1, characterized in that: The deflection adjusting device comprises a support beam and a telescopic jacking device, one end of the support beam is rotationally connected to the front bottom of the pilot truss, the other end is a free end, the bottom surface of the support beam is fixedly installed with a support roller, the telescopic jacking device is arranged above the support beam, and the two ends of the telescopic jacking device are respectively rotationally connected with the pilot truss and the free end of the support beam, the deflection adjusting device is supported on the supportable structure through the support roller at the bottom of the support beam after reaching the opposite supportable structure, and the deflection is adjusted by adjusting the angle between the support beam and the pilot truss through the telescopic jacking device.

3. The bridge water damage rapid access truss device according to claim 1, characterized in that: The truss pushing device comprises a jacking oil cylinder, a pushing oil cylinder and a slide rail assembly, the slide rail assembly comprises a slide rail and a sliding block, the slide rail is used for being anchored on the roadbed and / or the bridge deck, the sliding block is slidingly arranged on the slide rail, the cylinder barrel of the pushing oil cylinder is rotationally connected to the counterforce device, the piston rod of the pushing oil cylinder is rotationally connected to one side of the piston rod of the jacking oil cylinder, the cylinder barrel of the jacking oil cylinder is fixed to the sliding block, and the piston rod of the jacking oil cylinder can be telescopically extended or retracted to tightly or loosely fix the truss body.

4. The bridge water damage rapid access truss device of claim 1, wherein: The truss jacking device comprises a jacking frame, the jacking frame comprises a jacking cross beam and jacking telescopic struts fixed to the two ends of the jacking cross beam, and the truss body and the jacking cross beam can be detachably connected.

5. The bridge water damage rapid access truss device according to claim 4, characterized in that: The bottom end of the jacking telescopic strut is provided with a support plate.

6. The bridge water damage rapid access truss device of claim 1, wherein: The rolling support device comprises a base and a plurality of rollers rotationally connected to the base, and the base is anchored on the roadbed and / or the bridge deck through the anchoring device.

7. The bridge water damage rapid access truss device of claim 2, wherein: The telescopic jacking device is a hydraulic cylinder.

8. The bridge water damage rapid access truss device of claim 4, wherein: The jacking telescopic strut comprises a fixed column, a movable column and a telescopic oil cylinder, the upper end of the fixed column is fixed to the jacking cross beam, the movable column is slidingly connected to the lower end of the fixed column, and the telescopic oil cylinder connects the fixed column and the movable column and drives the movable column to move up and down.

9. A method for quickly restoring the traffic of a bridge damaged by water, characterized in that, The bridge water damage quick access truss device is used for construction, and the construction comprises the following steps: (1) According to the need of the construction site, the counterforce device is anchored on the roadbed and / or bridge deck through the anchoring device, the truss jacking device is connected with the counterforce device, and the rolling support device is anchored on the roadbed and / or bridge deck through the anchoring device; (2) The truss is transported to the position where the bridge needs to be erected and assembled to obtain the truss main body; the pilot truss is installed at the front end of the truss main body, the deflection adjustment device is installed at the front end of the pilot truss, and the truss jacking devices are installed at the front and rear ends of the truss main body; at this time, the truss main body is placed on the rolling support device, and the truss jacking device is located below the truss main body; (3) The truss main body is pushed forward by the truss jacking device, the deflection adjustment device is started after reaching the opposite supportable structure, the deflection adjustment device adjusts the deflection of the whole pilot truss and truss main body with the supportable structure as the support, the truss main body is continuously pushed forward until the truss main body passes through the hole and reaches the predetermined position; (4) The truss jacking devices at both ends are started to support on the bent cap, and then the pilot truss and the deflection adjustment device are removed; (5) The truss jacking devices are adjusted to make the truss main body fall on the bent cap; (6) The bridge deck slab and the auxiliary structure of the construction bridge are constructed to realize the bridge maintenance function.

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