High-speed rail damaged bridge rapid recovery emergency repair construction method

Abstract

The invention discloses a high-speed rail damaged bridge rapid recovery emergency repair construction method, and belongs to the field of damaged bridge rapid recovery construction, and the method comprises the following steps: 1, transporting a front guide beam to a bridge head to be spanned; secondly, the assembled first-aid repair steel beam and the rear guide beam are transported to the left end of the front guide beam; fourthly, the other end of the first-aid repair steel beam and the front guide beam are spliced together; fifthly, the assembled first-aid repair steel beam and the assembled first-aid repair guide beam are transported to an existing railway track, and the front guide beam is in a cantilever state; sixthly, the whole machine moves forwards till the first car falls on the existing railway track; seventhly, the whole machine moves forwards, and the steel beam is repaired in place; eighthly, the guide beam is separated from the rush-repair steel beam; and ninthly, the first-aid repair steel beam falls onto the padstone, and a track is laid. In a word, the construction method for quickly recovering the damaged bridge of the high-speed rail and emergency rescue is fixed in operation procedure, the emergency plan is easy to compile, and the plan is high in pertinence; the emergency drilling target is clear at ordinary times, the drilling effect can be consolidated conveniently, and the emergency guarantee capability of first-aid repair is formed.

Description

Technical Field

[0001] The invention relates to the field of rapid restoration construction of damaged bridges, and in particular to a rapid restoration emergency repair construction method for damaged high-speed railway bridges. Background Art

[0002] The types, structural structures, construction methods and process requirements of high-speed railway bridges are different from those of conventional railways, and the proportion of bridges is much higher than that of conventional railways. Due to the high probability of natural disasters and war strikes within the spatial range of high-speed railway bridges, the damage of high-speed railway bridges will cause the interruption of transportation lifeline. The existing railway bridge repair equipment was developed in the 1960s-1980s. At that time, the technical conditions were limited, and the technical indicators could not meet the current high-speed railway bridge repair needs. Combined with the current bridge construction, in order to achieve the purpose of "rapidity" of railway repair, the present invention proposes a construction method for rapid recovery of damaged high-speed railway bridges. Summary of the invention

[0003] The purpose of the present invention is to provide a method for rapid restoration and emergency repair of damaged high-speed railway bridges to solve the above-mentioned problems.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: The invention discloses a method for rapidly restoring a damaged high-speed railway bridge in an emergency manner, comprising: Step 1: The front guide beam is transported to the bridge head to be erected by running the No. 1 car and the No. 2 car on the existing railway track; Step 2: Car No. 3 and Car No. 4 cooperate with each other to transport the assembled repair steel beam and the rear guide beam to the left end of the front guide beam; Step 4: splice the other end of the repair steel beam with the front guide beam; Step 5: Car No. 3 and Car No. 4 cooperate with each other to transport the assembled repair steel beam, rear guide beam and front guide beam to the existing railway track. Car No. 1 on the front guide beam is detached from the track, so that the front guide beam is in a cantilever state. Car No. 3 holds the repair steel beam, and Car No. 2 and Car No. 4 start at the same time, and the whole machine moves forward until Car No. 2 arrives at the bridge head for beam erection; Step 6: Car No. 2 on the leading beam is detached from the track, and Car No. 3 holds the repair steel beam. Cars No. 3 and No. 4 start at the same time, and the whole machine moves forward until Car No. 1 lands on the existing railway track; Step 7: Car No. 3 holds the repair steel beam, while Car No. 1 and Car No. 4 cooperate to move the whole machine forward and put the repair steel beam in place; Step 8, detach the front guide beam and the rear guide beam from the emergency repair steel beam, and then drive backwards; Step nine, drop the emergency repair steel beam onto the pad stone, remove the front guide beam and the rear guide beam, and lay the track on the emergency repair steel beam.

[0005] Furthermore, a No. 1 vehicle lifting leg and a No. 2 vehicle lifting leg are respectively provided at the left and right ends of the bottom of the front guide beam.

[0006] Furthermore, the lifting legs of the No. 1 vehicle and the No. 2 vehicle both use lifting cylinders.

[0007] Furthermore, the emergency repair steel beam is connected to the front guide beam and the rear guide beam through a short-circuit joint, and the short-circuit joint includes two layers of upper and lower fixed connections. The upper layer fixed connection is provided with a secondary beam-dropping and lifting cylinder, and the lower layer fixed connection is provided with a primary beam-dropping and lifting cylinder; both ends of the emergency repair steel beam are provided with a tertiary beam-dropping and lifting cylinder.

[0008] Furthermore, the beam dropping construction process in step nine includes: In the first step, the beam lifting cylinder is retracted, and the repair steel beam is dropped to a position parallel to the existing railway track; In the second step, the secondary beam-dropping lifting cylinder extends the support, and the No. 3 car and the No. 2 car are respectively fixedly connected to the lower layer through connecting rods, and are moved out of the beam-dropping space; In the third step, the secondary beam-dropping lifting cylinder is retracted, and the tertiary beam-dropping lifting cylinder is extended to support, and the emergency repair steel beam is dropped for the second time to the position where the tertiary beam-dropping lifting cylinder contacts the cushion stone, and the connection between the emergency repair steel beam and the upper layer is removed; In the fourth step, the three-time beam-dropping lifting cylinder is retracted, and the emergency repair steel beam is dropped three times onto the pad stone to evacuate the short-circuit joint.

[0009] Compared with the prior art, the beneficial technical effects of the present invention are: The invention provides a method for rapid restoration and emergency repair of damaged high-speed railway bridges. The repair steel beams, trolleys, lifting cylinders, guide beams and other components can be assembled in advance in the combat readiness reserve warehouse and stored reasonably. When needed, the repair steel beams and guide beams can be transported to the bridge head by the existing railway, and the repair steel beams and guide beams cantilevered through holes can be put into place by using trolleys and lifting legs. The repair steel beams are dropped into place by using lifting cylinders, and the guide beams are quickly transported away by trolleys to lay tracks.

[0010] In summary, the method for rapid restoration of damaged high-speed railway bridges of the present invention has a fixed operating procedure, a simple preparation of emergency plans, and strong pertinence; the goals of routine emergency drills are clear, which is convenient for consolidating the drill effects and forming emergency repair support capabilities; the repair steel beams can be pre-assembled, which does not take up assembly time, the operation time can be controlled, and the repair time can be estimated by clarifying the transportation distance; the repair steel beams are pre-assembled in advance, and the transportation and erection operations are all carried out on the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] Figure 1This is a front view of the construction method for rapid restoration of damaged high-speed railway bridges in an emergency manner according to the present invention; Figure 2 It is the AA cross-section view; Figure 3 It is the BB cross-section; Figure 4 It is the cross-sectional view of CC; Figure 5 It is the DD cross-section; Figure 6 It is the EE cross-section diagram; Figure 7 It is the FF cross-section diagram; Figure 8 This is the transportation position diagram of the front guide beam; Fig. 9 The transportation position diagram of the assembled repair steel beam and rear guide beam; Fig.10 It is the cantilever state diagram of the front guide beam; Fig.11 This is the structural diagram of car No. 1 landing on the existing track; Fig.12 To repair the structural diagram of the steel beam in place; Fig.13 This is the structural diagram of the front and rear guide beams being separated; Fig.14 This is a structural diagram of a landing gear; Fig.15 This is the secondary landing structure diagram; Fig.16 To remove the short-circuit connector connection structure diagram; Fig.17 This is the structural diagram of the three-stage landing; Fig.18 This is the track laying structure diagram; Fig.19 This is a cross-sectional view of the structure of vehicle No. 3; Fig. 20 This is a cross-sectional view of the structure of car No. 1 / car No. 4; Explanation of the reference numerals in the accompanying drawings: 1. Lifting legs of car No. 1; 2. Car No. 1; 3. Front guide beam; 4. Lifting legs of car No. 2; 5. Car No. 2; 6. Lifting cylinder for primary beam-dropping; 7. Lifting cylinder for secondary beam-dropping; 8. Lifting cylinder for tertiary beam-dropping; 9. Car No. 3; 10. Repair steel beam; 11. Rear guide beam; 12. Car No. 4; 13. Traveling wheels; 14. Support rollers; 15. Guide wheels; 16. Support roller tracks; 17. Hanging wheels; 18. Hanging wheel tracks. DETAILED DESCRIPTION

[0013] like Figure 1-19 As shown, a method for rapid restoration and emergency repair of a damaged high-speed railway bridge comprises: Step 1: The front guide beam 3 is transported to the bridge head to be erected by the No. 1 car 2 and the No. 2 car 5 on the existing railway track; Step 2: Car No. 3 9 and Car No. 4 12 cooperate with each other to transport the assembled repair steel beam 10 and the rear guide beam 11 to the left end of the front guide beam 3; Step 4, splicing the other end of the repair steel beam 10 with the front guide beam 3; Step 5: Car No. 3 9 and Car No. 4 12 cooperate with each other to transport the assembled repair steel beam 10, rear guide beam 11 and front guide beam 3 to the existing railway track. Car No. 1 2 on the front guide beam 3 is detached from the track, so that the front guide beam 3 is in a cantilever state. Car No. 3 9 holds the repair steel beam 10, and Car No. 2 5 and Car No. 4 12 start at the same time, and the whole machine moves forward until Car No. 2 5 arrives at the bridge head where the beam is to be erected. Step 6: The No. 2 car 5 on the leading beam 3 is detached from the track, the No. 3 car 9 holds the repair steel beam 10, and the No. 3 car 9 and the No. 4 car 12 start at the same time, and the whole machine moves forward until the No. 1 car 2 falls on the existing railway track; Step 7: Car No. 3 9 holds the repair steel beam 10, and car No. 1 2 cooperates with car No. 4 12, and the whole machine moves forward to put the repair steel beam 10 in place; Step 8, detach the front guide beam 3 and the rear guide beam 11 from the emergency repair steel beam 10, and then drive backwards; Step nine, the emergency repair steel beam 10 is dropped onto the pad stone, the front guide beam 3 and the rear guide beam 11 are evacuated, and the track is laid on the emergency repair steel beam 10.

[0014] The left and right ends of the bottom of the front guide beam 3 are respectively installed with a No. 1 car lifting leg 1 and a No. 2 car lifting leg 4.

[0015] The lifting legs 1 of the first vehicle and the lifting legs 4 of the second vehicle both adopt lifting cylinders.

[0016] The repair steel beam 10 is connected to the front guide beam 3 and the rear guide beam 11 through a short-circuit joint. The short-circuit joint includes two layers of fixed connections, the upper layer is fixedly installed with a secondary beam-dropping and lifting cylinder 7, and the lower layer is fixedly installed with a primary beam-dropping and lifting cylinder 6; both ends of the repair steel beam 10 are installed with a tertiary beam-dropping and lifting cylinder 8.

[0017] The beam dropping construction process in step nine ( Figure 14-17 )include: In the first step, the beam lifting cylinder 6 is retracted, and the repair steel beam 10 is dropped to a position parallel to the existing railway track; In the second step, the secondary beam-dropping lifting cylinder 7 extends the support, and the third car 9 and the second car 5 are respectively fixedly connected to the lower layer through connecting rods, and are moved out of the beam-dropping space; In the third step, the secondary beam-dropping lifting cylinder 7 is retracted, the tertiary beam-dropping lifting cylinder 8 is extended to support, and the emergency repair steel beam 10 is dropped for the second time to the position where the tertiary beam-dropping lifting cylinder 8 contacts the cushion stone, and the connection between the emergency repair steel beam 10 and the upper layer is removed; The fourth step is to retract the beam lifting cylinder 8 three times, and the repair steel beam 10 drops three times onto the cushion stone to evacuate the short-circuit joint.

[0018] Specifically, the No. 3 car 9 includes running wheels 13 symmetrically arranged on the railway track, and supporting rollers 14 are arranged above the running wheels 13. The supporting rollers 14 are slidably connected to supporting roller tracks 16 above the supporting rollers 14, and the supporting roller tracks 16 are arranged at the bottom of the steel beam. The supporting rollers 14 are connected to the hanging wheels 17 above through flanges, and the guide wheels 15 are welded below the hanging wheels 17 at a position close to the outer side of the steel beam cover plate. The upper end surface of the steel beam cover plate is a hanging wheel track 18 for the hanging wheels 17 to travel. Among them, when passing through the hole, the emergency repair steel beam 10 moves under the action of the supporting rollers 14. The No. 1 car 2 has the same structure as the No. 4 car 12, and uses the same type of transport trolley.

[0019] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A method for rapid restoration of damaged high-speed railway bridges in emergency, characterized in that: include Step 1: The front guide beam (3) is transported to the bridge head to be erected by running the first car (2) and the second car (5) on the existing railway track; Step 2: Car No. 3 (9) and Car No. 4 (12) cooperate with each other to transport the assembled repair steel beam (10) and the rear guide beam (11) to the left end of the front guide beam (3); Step 4, splicing the other end of the repair steel beam (10) with the front guide beam (3); Step 5, the No. 3 car (9) and the No. 4 car (12) cooperate with each other to transport the assembled emergency repair steel beam (10), the rear guide beam (11) and the front guide beam (3) to the existing railway track, the No. 1 car (2) on the front guide beam (3) is separated from the track, so that the front guide beam (3) is in a cantilever state, the No. 3 car (9) supports the emergency repair steel beam (10), the No. 2 car (5) and the No. 4 car (12) start at the same time, and the whole machine moves forward until the No. 2 car (5) arrives at the bridge head where the beam is to be erected; Step 6: the No. 2 car (5) on the leading beam (3) is detached from the track, the No. 3 car (9) holds the repair steel beam (10), the No. 3 car (9) and the No. 4 car (12) are started at the same time, and the whole machine moves forward until the No. 1 car (2) lands on the existing railway track; Step 7, the No. 3 vehicle (9) holds the repair steel beam (10), the No. 1 vehicle (2) cooperates with the No. 4 vehicle (12), the whole machine moves forward, and the repair steel beam (10) is in place; Step eight, separating the front guide beam (3) and the rear guide beam (11) from the emergency repair steel beam (10), and driving backwards after separation; Step nine, the emergency repair steel beam (10) is dropped onto the pad stone, the front guide beam (3) and the rear guide beam (11) are evacuated, and the track is laid on the emergency repair steel beam (10).

2. The method for rapid restoration and emergency repair of damaged high-speed railway bridges according to claim 1 is characterized in that: The left and right ends of the bottom of the front guide beam (3) are respectively provided with a first vehicle lifting leg (1) and a second vehicle lifting leg (4).

3. The method for rapid restoration and emergency repair of damaged high-speed railway bridges according to claim 2 is characterized in that: The first vehicle lifting support leg (1) and the second vehicle lifting support leg (4) both use a lifting cylinder.

4. The method for rapid restoration and emergency repair of damaged high-speed railway bridges according to claim 1 is characterized in that: The emergency repair steel beam (10) is connected to the front guide beam (3) and the rear guide beam (11) via a short-circuit joint, wherein the short-circuit joint comprises an upper and lower fixed connection, wherein the upper fixed connection is provided with a secondary beam-dropping lifting cylinder (7), and the lower fixed connection is provided with a primary beam-dropping lifting cylinder (6); both ends of the emergency repair steel beam (10) are provided with a tertiary beam-dropping lifting cylinder (8).

5. The method for rapid restoration and emergency repair of damaged high-speed railway bridges according to claim 4 is characterized in that: The beam dropping construction process in step nine includes: In the first step, the beam-dropping lifting cylinder (6) is retracted, and the repair steel beam (10) is dropped to a position parallel to the existing railway track; In the second step, the secondary beam-dropping lifting cylinder (7) extends the support, and the third car (9) and the second car (5) are respectively fixedly connected to the lower layer through connecting rods, and are moved out of the beam-dropping space; In the third step, the secondary beam-dropping lifting cylinder (7) is retracted, the tertiary beam-dropping lifting cylinder (8) is extended to support, and the emergency repair steel beam (10) is dropped for the second time to the position where the tertiary beam-dropping lifting cylinder (8) contacts the cushion stone, and the connection between the emergency repair steel beam (10) and the upper layer is removed; In the fourth step, the three-time beam-dropping lifting cylinder (8) is retracted, and the repair steel beam (10) is dropped onto the cushion stone three times to evacuate the short-circuit joint.

Images