Bridge repairing process and auxiliary equipment

Abstract

The invention relates to a bridge repairing process and auxiliary equipment. The auxiliary equipment comprises a maintenance car; a concrete storage box is arranged on the maintenance car; a stirrer is matched with one transverse side of the concrete storage box; a manipulator assembly is arranged on the maintenance car; a storage box body A and a storage box body B are arranged on the two sides of the manipulator assembly; a connecting rod is placed in the storage box body A; a reinforcing plate is placed in the storage box body B; the device is reasonable in design, compact in structure and convenient to use.

Description

Technical Field

[0001] The invention relates to a bridge repair process and auxiliary equipment. Background Art

[0002] In order to improve the lateral stiffness of the bridge and ensure the safety of railway transportation, the bridge needs to be laterally reinforced to solve problems such as bridge aging and reduced bearing capacity, thereby extending the bearing capacity and service life of the bridge.

[0003] Existing mature reinforcement methods include pasting carbon fiber cloth or steel plates, adding support structures, replacing or repairing bridge bearings, prestressed reinforcement, adding cross-section reinforcement, foundation reinforcement and other methods, each of which has its own advantages and disadvantages. After investigation, this design uses transverse prestressed steel strands to reinforce multiple bridges on the XX line. Through on-site investigation, the XX line uses measures such as adding steel plates and connecting steel bars and reinforced concrete in the transverse direction of the beam to reinforce the beam body, increase the transverse connection between the two beams, strengthen the integrity of the beam body, and enhance the transverse stiffness.

[0004] During the investigation, it was found that the current difficulty in construction work lies in the labor cost. The track is set longitudinally. For one-way tracks, especially cable-stayed bridges, the lateral space on the bridge is limited. How to avoid occupying the lateral space as much as possible, improve the integration of work vehicles, facilitate maintenance, and reduce costs has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the present invention is generally to provide a bridge repair process and auxiliary equipment.

[0006] To solve the above problems, the technical solution adopted by the present invention is:

[0007] In order to improve the existing repair process and increase efficiency, an auxiliary equipment for bridge repair process includes a repair vehicle; a concrete storage box is arranged on the repair vehicle;

[0008] A mixer is provided on one lateral side of the concrete storage box;

[0009] A manipulator assembly is provided on the maintenance vehicle;

[0010] Storage box A and storage box B are arranged on both sides of the manipulator assembly;

[0011] A connecting rod is placed in the storage box A;

[0012] In the storage box B a reinforcement plate is placed.

[0013] As a further improvement of the above technical solution:

[0014] As a preferred method, position adjustment can be achieved, so that the length of the mechanical arm can be shortened, and a longitudinal track is provided on the maintenance vehicle;

[0015] A middle station is provided in the middle of the longitudinal track;

[0016] The robot assembly is in the middle position;

[0017] Storage box A and storage box B are at both ends of the longitudinal track;

[0018] A delivery pump is connected to the lower end of the concrete storage box;

[0019] The concrete storage box is longer in the longitudinal direction than in the transverse direction.

[0020] In order to increase the strength and improve the existing structural strength, the connecting rod adopts a cross beam tube; a number of side wall through holes are distributed on the outer wall of the middle part of the cross beam tube; plugs and connecting joints are respectively provided at both ends of the cross beam tube; the side wall through holes are in the beam body;

[0021] The exposed side wall through-holes are provided by plugging and blocking;

[0022] In order to facilitate the output of concrete, the connecting joint is used to connect the delivery pump, and the connecting joint can also realize the delivery of glue.

[0023] In order to achieve the mixing of concrete using limited space, the mixer includes a lifting arm arranged on the maintenance vehicle; a horizontal plate frame is arranged on the top of the lifting arm;

[0024] A rotating shaft and an auxiliary frame are arranged at the lower end of the horizontal plate frame;

[0025] One end of a side swing arm is eccentrically connected to the lower end of the rotating shaft;

[0026] The other end of the side swing arm is connected to one end of a linkage arm via a hinge shaft A;

[0027] An articulated seat A is hingedly connected at the lower end of the linkage arm through an articulated joint;

[0028] A short finger and a long finger are respectively arranged at both ends of the hinge seat A;

[0029] A hinged guide seat is arranged on the auxiliary frame;

[0030] The linkage arm moves in an articulated guide seat;

[0031] The axis center line of the rotating shaft is parallel to the axis center line of the auxiliary frame, and the planes where the two are located are perpendicular to the longitudinal direction of the maintenance vehicle.

[0032] In order to reduce the space occupied by the manipulator, the manipulator assembly includes a mechanical vertical arm that is lifted and swung and is arranged on the maintenance vehicle; a through guide sleeve is arranged on the top of the mechanical rotating arm; and a horizontal cross arm moves in the through guide sleeve;

[0033] A driving rod is horizontally arranged on the mechanical rotating arm;

[0034] The driving rod is connected to the tail end of the horizontal cross arm.

[0035] A swing arm is swinging at the end of the horizontal cross arm head;

[0036] The tail end and the head end of the horizontal cross arm are respectively located on both sides of the penetrating guide sleeve;

[0037] A clamping finger portion is arranged at the lower end of the swing arm.

[0038] In order to increase the clamping force, the clamping finger portion includes a fixed bracket arranged at the lower end of the swing arm;

[0039] L-shaped end portions are symmetrically arranged on both sides of the lower end of the fixed bracket;

[0040] The fixing bracket and the L-shaped end portion form a mountain-shaped hollow with an opening facing downward, wherein the middle hollow is transparent downward;

[0041] A lifting drive rod is arranged at the middle of the top of the fixed bracket;

[0042] A lifting horizontal plate is arranged in the horizontal transparent part of the mountain-shaped hollow;

[0043] The upper end of the lifting horizontal plate is connected to the lower end of the lifting driving rod;

[0044] Transverse guide sleeves are respectively sleeved on both sides of the lifting horizontal plate.

[0045] The vertical plate at the L-shaped end portion is arranged upward;

[0046] A transverse guide through hole is provided on the vertical plate of the L-shaped end portion;

[0047] The fixed bracket is provided with a transverse process through hole corresponding to the transverse guide through hole;

[0048] A transverse moving plate moves in the transverse guide through hole;

[0049] The lateral moving plate is hinged to the lateral guide sleeve on the same side through a connecting rod B;

[0050] The upper end of the bending arm is connected to the inner side section of the transverse moving plate.

[0051] A clamping finger is connected to the lower horizontal elbow of the bending arm;

[0052] A connecting rod C is hinged between the transverse guide sleeve and the fixed bracket.

[0053] A bridge repair process, based on the above auxiliary equipment; the process comprises the following steps;

[0054] Step 1: Use auxiliary equipment to move to the construction site of the bridge body; then, rely on the cap, use the detector to detect the direction and position of the prestressed steel bars of the beam body, and determine the drilling position; then, drill holes in the holes of the transverse prestressed steel bars of the web; then, roughen the interface between the new and old concrete of the beam body, and drill holes for anchoring steel bars;

[0055] Step 2: insert the connecting rod into the drilled hole;

[0056] Step 3: Anchor, tie and install the original steel bars and connecting rods;

[0057] Step 4: pour concrete into the connecting rod and tension it, and seal the end with an anchor;

[0058] In step three, first, the storage box A and the storage box B are moved to the middle position respectively; then, at the middle position, the clamping fingers clamp the connecting rod and the reinforcing plate to the beam body respectively; secondly, the constructor inserts the connecting rod into the drilled hole;

[0059] In step four, first, pour the precast rolling concrete into the concrete storage box; then, stir it through a stirrer; the stirring track is longer in the longitudinal direction than in the transverse direction; again, connect the delivery pump and the connecting joint through a pipeline; secondly, start the delivery pump, and the precast concrete enters through the central channel of the beam tube, and then enters the gap between the beam tube and the beam body through the side wall through-hole.

[0060] In step three, for the manipulator assembly, first, the mechanical arm raises the mechanical swivel arm to the set height; then, the clamping fingers clamp the connecting rod of storage box A or the reinforcing plate of storage box B respectively; secondly, while the mechanical swivel arm rotates, the driving rod drives the horizontal cross arm to retract along the through guide sleeve; when reaching the lateral position, the driving rod drives the horizontal cross arm to extend, and the mechanical arm descends, so that the connecting rod or the reinforcing plate falls to the construction site and is delivered to the construction workers; of course, in order to ensure safety, there are also auxiliary binding ropes on it.

[0061] When clamping the connecting rod or reinforcing plate, the lifting drive rod drives the lifting horizontal plate to descend, and the transverse guide sleeve moves oppositely on the lifting horizontal plate. Under the hinged action of the connecting rod C, the connecting rod B swings to drive the transverse moving plate to move oppositely in the transverse guide through hole, so that the clamping fingers clamp the connecting rod or reinforcing plate oppositely.

[0062] In step 4, during the mixing process, the rotating shaft drives the side swing arm to rotate, causing the linkage arm to swing, and the articulated head to move along a long zero trajectory, and the short fingers and long fingers mix the upper and lower parts of the concrete storage box.

[0063] Compared with the traditional method, the present invention greatly improves the degree of automation and mechanization, reduces the width of the maintenance vehicle as much as possible, so as not to affect the emergency passage of other rail trains, and has reasonable design, low cost, durability, safety and reliability, simple operation, time-saving, labor-saving, money-saving, compact structure and easy use.

[0064] The present invention utilizes the pedestal to facilitate construction workers' construction work, so that the beam body can be efficiently operated on the bridge body, the maintenance vehicle can be conveniently moved, the reinforcing plate can be thickened, the connecting rod can realize the connection and fixation of the two beam bodies, the agitator can realize approximately elliptical stirring, and the manipulator assembly can realize the handling of materials. It makes full use of the longitudinal space to supplement the transverse space, and realizes the position adjustment of the storage box A and the storage box B through the longitudinal track, so that the length of the force arm can be shortened, the conveying pump can realize power output, the concrete storage box realizes concrete storage, the middle position realizes the transverse output auxiliary tool, the crossbeam pipe realizes the output and filling of concrete by the side wall through hole, the connecting joint can be a tee, so as to inject glue and increase the solidifying agent, the lifting arm realizes the lifting adjustment, the cross plate frame realizes the support, the rotating shaft provides power, the auxiliary frame is a swing support, so that the side swing arm drives the linkage arm to swing and move through the hinge shaft A and the hinge guide seat, the hinge joint realizes the free swing of the hinge seat A, so as to better stir, and the short fingers and long fingers realize the stirring of the upper and lower layers. By linking various actions, the lateral distance is further increased. The mechanical vertical arm utilizes the mechanical rotating arm to penetrate the guide sleeve, and the horizontal cross arm realizes the swinging movement. The swinging arm realizes the clamping of the workpiece by the clamping fingers. Through the fixed bracket, lifting cross plate, lifting drive rod, cross guide sleeve, L-shaped end head, cross guide through hole, cross moving plate, connecting rod B, bending arm and linkage of various components, the clamping fingers clamp the object. At the same time, the clamping force is large, thereby protecting various components from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a schematic diagram of the use structure of the maintenance vehicle of the present invention.

[0066] Figure 2 It is a schematic structural diagram of the maintenance vehicle embodiment 1 of the present invention.

[0067] Figure 3 It is a schematic structural diagram of the maintenance vehicle embodiment 2 of the present invention.

[0068] Figure 4 It is a schematic diagram of the lifting arm structure of the present invention.

[0069] Figure 5 It is a schematic diagram of the use structure of the penetration guide sleeve of the present invention.

[0070] Figure 6 It is a schematic diagram of the L-shaped end portion structure of the present invention.

[0071] Figure 7 It is a structural schematic diagram of the connecting rod C of the present invention.

[0072] Among them: 1. Bridge body; 2. Beam body; 3. Cap; 4. Maintenance vehicle; 5. Reinforcement plate; 6. Connecting rod; 7. Agitator; 8. Manipulator assembly; 9. Longitudinal track; 10. Storage box A; 11. Storage box B; 12. Delivery pump; 13. Concrete storage box; 14. Middle position; 15. Crossbeam tube; 16. Side wall through hole; 17. Plug; 18. Connecting joint; 19. Lifting arm; 20. Cross plate frame; 21. Rotating axis; 22. Auxiliary frame; 23. Side swing arm; 24. Articulated axis A; 25. Articulated guide seat; 2 6. Linkage arm; 27. Articulated head; 28. Articulated seat A; 29. ​​Short finger; 30. Long finger; 31. Mechanical vertical arm; 32. Mechanical rotating arm; 33. Through-guide sleeve; 34. Horizontal cross arm; 35. Swing arm; 36. Clamping finger; 37. Fixed bracket; 38. Lifting horizontal plate; 39. Lifting drive rod; 40. Transverse guide sleeve; 41. L-shaped end head; 42. Transverse guide through hole; 43. Transverse moving plate; 44. Connecting rod B; 45. Bending arm; 46. Clamping finger; 47. Connecting rod C; 48. Drive rod. DETAILED DESCRIPTION

[0073] like Figure 1-7 As shown, the auxiliary equipment of the bridge repair process of this embodiment includes a repair vehicle 4, which is a conventional plate-type tool vehicle; a concrete storage box 13 is provided on the repair vehicle 4, and the required concrete is prefabricated according to the required amount;

[0074] A stirrer 7 is provided on one lateral side of the concrete storage box 13 to stir the concrete and prevent it from solidifying. A sunshade or a dripper can be provided on the concrete storage box 13.

[0075] A manipulator assembly 8 is provided on the maintenance vehicle 4 to clamp and deliver the required steel plates and steel bars to the beam body below for reinforcement;

[0076] Storage boxes A10 and B11 are provided on both sides of the manipulator assembly 8 to achieve spatial staggering;

[0077] A connecting rod 6 is placed in the storage box A10, which can replace the steel bar, thereby reducing the construction density and ensuring the overall stability;

[0078] A reinforcing plate 5 is placed in the storage box B11 as a thickening plate.

[0079] As an improved embodiment, a longitudinal track 9 is provided on the maintenance vehicle 4, so as to realize the position adjustment of the storage box;

[0080] A middle position 14 is provided in the middle of the longitudinal track 9; the manipulator assembly 8 is in the middle position 14;

[0081] Storage box A10 and storage box B11 are located at both ends of the longitudinal track 9, thereby realizing the transportation of auxiliary parts at both sides. Of course, other required items can also be transported.

[0082] The lower end of the concrete storage box 13 is connected to a delivery pump 12 ; it may be a conventional pump such as a screw pump, so that the longitudinal direction of the concrete storage box 13 is longer than the transverse direction.

[0083] The connecting rod 6 adopts a cross beam tube 15; a plurality of side wall through holes 16 are distributed on the outer wall of the middle part of the cross beam tube 15; a plug 17 and a connecting joint 18 are respectively provided at both ends of the cross beam tube 15; the side wall through holes 16 are in the beam body 2; thereby avoiding the influence of too many through holes on the beam body, and by implanting the hollow tube, the strength of the connecting rod is improved, thereby increasing the overall stability.

[0084] The side wall through holes 16 exposed to the outside are blocked to prevent the concrete from leaking out;

[0085] The connection joint 18 is used to connect the delivery pump 12 to achieve pressurized concrete pouring. At the same time, the joint can be equipped with a tee to allow the glue to be input together to avoid the glue from mixing into the storage box and affecting the concrete.

[0086] The agitator 7 includes a lifting arm 19 disposed on the maintenance vehicle 4; a horizontal plate frame 20 is disposed on the top of the lifting arm 19;

[0087] A rotating shaft 21 and an auxiliary frame 22 are provided at the lower end of the horizontal plate frame 20;

[0088] One end of a side swing arm 23 is eccentrically connected to the lower end of the rotating shaft 21;

[0089] The other end of the side swing arm 23 is connected to one end of a linkage arm 26 via a hinge shaft A24;

[0090] An articulated seat A28 is articulated at the lower end of the linkage arm 26 via an articulated joint 27, thereby achieving automatic movement when changing direction.

[0091] A short finger 29 and a long finger 30 are respectively provided at both ends of the hinge seat A28, so as to realize layered stirring;

[0092] An articulated guide seat 25 is provided on the auxiliary frame 22, so as to facilitate the swinging setting.

[0093] The linkage arm 26 moves in the articulated guide seat 25;

[0094] The axis of the rotating shaft 21 is parallel to the axis of the auxiliary frame 22, and the planes where the two are located are perpendicular to the longitudinal direction of the maintenance vehicle 4, thereby lengthening the concrete storage box 13 and shortening the lateral width, thereby solving the problem that the traditional mixing box either has a large lateral width or a small amount of concrete stock.

[0095] In order to maximize the use of longitudinal space and reduce lateral space, the manipulator assembly 8 includes a mechanical vertical arm 31 that is lifted and swung on the maintenance vehicle 4; a through guide sleeve 33 is provided on the top of the mechanical rotating arm 32; and a horizontal cross arm 34 moves in the through guide sleeve 33;

[0096] A driving rod 48 is horizontally arranged on the mechanical rotating arm 32 to realize power drive.

[0097] The driving rod 48 is connected to the tail end of the horizontal cross arm 34.

[0098] A swing arm 35 is swinging at the head end of the horizontal cross arm 34;

[0099] The tail end and the head end of the horizontal cross arm 34 are respectively located on both sides of the penetrating guide sleeve 33, so as to achieve force balance.

[0100] A clamping finger portion 36 is provided at the lower end of the swing arm 35, and its clamping force is greater than that of conventional conventional clamping forces.

[0101] The clamping finger portion 36 includes a fixed bracket 37 arranged at the lower end of the swing arm 35, which can provide a large supporting force; at the same time, it plays a protective role to prevent the linked connecting rods from being damaged.

[0102] Specifically, L-shaped end portions 41 are symmetrically arranged on both sides of the lower end of the fixing bracket 37; the fixing bracket 37 and the L-shaped end portions 41 form a mountain-shaped hollow with an opening facing downward, wherein the middle hollow portion is transparent downward;

[0103] A lifting drive rod 39 is provided at the middle of the top of the fixed bracket 37;

[0104] A lifting horizontal plate 38 is provided at the horizontal transparent part of the mountain-shaped hollow;

[0105] The upper end of the lifting horizontal plate 38 is connected to the lower end of the lifting driving rod 39;

[0106] Transverse guide sleeves 40 are respectively sleeved on both sides of the lifting transverse plate 38.

[0107] The vertical plate of the L-shaped end portion 41 is arranged upward;

[0108] A transverse guide through hole 42 is provided on the vertical plate of the L-shaped end portion 41;

[0109] The fixing bracket 37 is provided with a transverse process through hole corresponding to the transverse guide through hole 42;

[0110] A transverse moving plate 43 moves in the transverse guide through hole 42;

[0111] The lateral moving plate 43 is hinged to the lateral guide sleeve 40 on the same side through a connecting rod B44;

[0112] The upper end of the bending arm 45 is connected to the inner section of the transverse moving plate 43 .

[0113] A clamping finger 46 is connected to the lower horizontal elbow of the bending arm 45;

[0114] A connecting rod C47 is hinged between the transverse guide sleeve 40 and the fixed bracket 37 .

[0115] The bridge repair process of this embodiment is based on the above-mentioned auxiliary equipment; the process includes the following steps:

[0116] Step 1: Use auxiliary equipment to move to the construction site of the bridge body 1; then, relying on the cap 3, use the detector to detect the prestress and steel bar direction and position of the beam body 2 and determine the drilling position; then, drill holes in the transverse prestressed steel bar holes on the web; then, roughen the interface between the new and old concrete of the beam body and drill holes for anchoring steel bars;

[0117] Step 2: insert the connecting rod 6 into the drill hole;

[0118] Step 3: Anchor, tie and install the original steel bars and the connecting rod 6;

[0119] Step 4: pour concrete into the connecting rod 6 and tension it, and seal the end with an anchor;

[0120] In step three, first, the storage box A10 and the storage box B11 are moved to the middle station 14 respectively; then, at the middle station 14, the clamping finger portion 36 clamps the connecting rod 6 and the reinforcing plate 5 to the beam body 2 respectively; secondly, the constructor inserts the connecting rod 6 into the drilled hole;

[0121] In step four, first, pour the precast rolled concrete into the concrete storage box 13; then, stir it through the agitator 7; the stirring track is longer in the longitudinal direction than in the transverse direction; again, connect the delivery pump 12 to the connecting joint 18 through a pipeline; secondly, start the delivery pump 12, and the precast concrete enters through the central channel of the cross beam tube 15, and then enters the gap between the cross beam tube 15 and the beam body 2 through the side wall through hole 16.

[0122] In step three, for the manipulator assembly 8, first, the mechanical vertical arm 31 raises the mechanical rotating arm 32 to a set height; then, the clamping finger portion 36 clamps the connecting rod 6 of the storage box A10 or the reinforcing plate 5 of the storage box B11 respectively; secondly, while the mechanical rotating arm 32 rotates, the driving rod 48 drives the horizontal cross arm 34 to retract along the penetrating guide sleeve 33; when reaching the lateral position, the driving rod 48 drives the horizontal cross arm 34 to extend, and the mechanical vertical arm 31 descends, so that the connecting rod 6 or the reinforcing plate 5 falls to the construction site and is delivered to the construction personnel;

[0123] When clamping the connecting rod 6 or the reinforcing plate 5, the lifting driving rod 39 drives the lifting horizontal plate 38 to descend, and the transverse guide sleeve 40 moves in opposite directions on the lifting horizontal plate 38. Under the hinged action of the connecting rod C47, the connecting rod B44 swings to drive the transverse moving plate 43 to move in opposite directions in the transverse guide through hole 42, so that the clamping fingers 46 clamp the connecting rod 6 or the reinforcing plate 5 in opposite directions.

[0124] In step 4, during the mixing process, the rotating shaft 21 drives the side swing arm 23 to rotate, so that the linkage arm 26 swings, the articulated head 27 moves a long zero track, and the short fingers 29 and the long fingers 30 mix the concrete storage box 13 from top to bottom.

[0125] For reference, its construction should preferably meet the requirements of the Technical Code for Construction of Passenger and Freight Railway Bridges and Culverts (Q / CR 9652-2017), the Technical Code for Construction of Railway Concrete Engineering (Q / CR 9207-2017), and the Technical Conditions for Transverse Reinforcement of Railway Concrete Double-piece Simply Supported Beams (TB / T3191-2008), and should also comply with the following provisions: (1) It is strictly forbidden to damage the existing longitudinal prestressed steel bars or longitudinal main bars during drilling, and damage to the existing ordinary steel bars should be avoided as much as possible; (2) If the hole position cannot avoid the steel bars, the drilling position can be adjusted appropriately, and the moving distance should not be greater than 50mm. The drilling position of the anchor steel bar can be moved appropriately, but the thickness of the protective layer should be ensured to be not less than 35mm; (3) After the hole is formed, the hole is cleaned with a brush and an air blower to remove the dust in the hole; (4) The template should be It must be reliably connected to the original beam and have sufficient rigidity; (5) The initial prestressing stress of the prestressed tendons is controlled to be 280MPa (initial tension 39kN). Before the initial prestressing, hard supports should be added to the upper and lower sides of the newly added transversely connected beam body; (6) The concrete mix ratio test must be carried out, and the strength and elastic modulus must reach 80% of the design value within three days. If the sand and gravel materials change, the mix ratio test should be repeated, and a set of elastic modulus tests must be performed; (7) The final prestressing of the prestressed tendons can only be carried out after the concrete strength and elastic modulus reach 80% of the design value. The prestressing control stress is 1350MPa (initial tension 188kN). (8) The final tensioning of the prestressed tendons is done with a YQD230-100 jack. The prestressed tendons are first tensioned to the designed tonnage. After the top pressure anchor is fixed, the reversing valve is pulled to repeat the tensioning to the designed tonnage. The pressure nuts are tightened to ensure that the prestressed tendons shrink less than 1mm. (9) Before starting work, the operation department should be contacted, and attention should be paid to construction protection and preliminary preparations. Necessary safety measures should be taken, and close cooperation should be made with the operation department to ensure the safety of operation and construction. Concrete pouring and initial setting of concrete should be carried out during the skylight time.

[0126] Material description: Micro-expansive concrete: Grade C50, ordinary Portland cement is used, and the slump is controlled at 8-10cm. The 28d limited expansion rate of micro-expansive concrete is 0.015%-0.05%, and it is adjusted according to the construction situation to avoid cracking. According to the requirements of the "Design Code for Concrete Structures of Railway Bridges and Culverts" (TB10092-2017), the 28d axial ultimate compressive strength of C50 concrete is 33.5MPa, and the axial ultimate tensile strength is 3.1MPa.

[0127] The steel material of the reinforcing plate 5 is Q355 steel plate, and the technical conditions shall comply with the provisions of "Low Alloy High Strength Structural Steel" QB / T1591-2018).

[0128] The cross beam tube 15 adopts prestressed tendons.

[0129] The reinforcing bar glue is connected to the concrete and poured into the cross beam tube 15.

[0130] The selection of anchor glue shall be carried out in accordance with Section 3 of the Technical Code for Post-Anchorage of Concrete Structures (JGJ145-2013). The performance of anchor glue shall meet the requirements of Section 5 of the Anchor Glue for Concrete Structure Engineering (GB / T 37127-2018). It is recommended to use modified epoxy resin or modified vinyl ester A-grade glue. And use anchor glue with good durability. It is recommended that the anchor glue meet the use requirements of not less than 50 years.

[0131] Matters needing attention in rebar planting construction

[0132] It is recommended that the construction unit should be equipped with a beam tube detector and a dual-clutch safety hammer. Before drilling, the beam tubes and prestressed tendons in the structure should be detected to avoid damaging the beam tubes. If interference occurs, the position of the beam tubes should be moved appropriately. According to the distribution status of the beam tubes in the beam detected, make eye-catching marks on the surface of the beam. According to the design drawings, preliminarily mark the drilling positions of the anchor beam tubes and transverse prestressed tendons on the surface of the beam. Taking into account the distribution of the beam tubes in the corresponding parts of the two beams, determine the drilling position of the prestressed tendons. If the hole position cannot avoid the main reinforcement or other obstacles, it can be moved appropriately, but it should not be greater than 50mm from the design position. The drilling position of the anchor beam tube can be moved appropriately, but the thickness of the protective layer should be ensured to be not less than 35mm.

[0133] For the construction of anchoring glue, the anchoring strength test should be carried out before the full construction.

[0134] When drilling during construction, you should try to avoid using electric hammers that rely on the cam transmission principle. Instead, you should use electric hammers that rely on the electric-pneumatic hammer principle.

[0135] It is prohibited to disturb the beam tube during the curing period.

[0136] When cleaning the hole, you should not only use tools such as a blower or air pump, but also use equipment such as a brush to remove dust attached to the hole wall.

[0137] When the temperature is high in summer, the surface temperature of the concrete may reach 60-70℃. If a longer operation time is required, water can be poured into the hole to cool it down, and glue and rebar can be injected after the water in the hole is dried.

[0138] When constructing the crossbeam tube reinforcement, drill one hole and plant one rebar at a time, and make the drilling and rebar planting construction as fast and accurate as possible.

[0139] Emergency plugging measures for drilling holes should be taken before the construction of rebar planting. During the drilling construction, it is necessary to pay close attention to the development of cracks around the drilling holes. If cracks are found around the drilling holes, the drilling construction should be stopped immediately and the drilling holes should be urgently plugged.

[0140] The present invention is fully described for a clearer disclosure, and the prior art is not listed one by one.

[0141] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents; it is obvious for those skilled in the art to combine multiple technical solutions of the present invention. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention. The technical contents not described in detail in the present invention are all known technologies.

Claims

1. An auxiliary equipment for bridge repair process, characterized in that: It comprises a maintenance vehicle (4); a concrete storage box (13) is arranged on the maintenance vehicle (4); A stirrer (7) is provided on one lateral side of the concrete storage box (13); A manipulator assembly (8) is provided on the maintenance vehicle (4); A storage box A (10) and a storage box B (11) are arranged on both sides of the robot assembly (8); A connecting rod (6) is placed in the storage box A (10); A reinforcing plate (5) is placed in the storage box B (11).

2. The auxiliary equipment for bridge repair process according to claim 1, characterized in that: A longitudinal track (9) is provided on the maintenance vehicle (4); A middle position (14) is arranged in the middle of the longitudinal track (9); The manipulator assembly (8) is in the middle position (14); The storage box A (10) and the storage box B (11) are at both ends of the longitudinal track (9); The lower end of the concrete storage box (13) is connected to a delivery pump (12); The concrete storage box (13) is longer in the longitudinal direction than in the transverse direction.

3. The auxiliary equipment for bridge repair process according to claim 2 is characterized in that: The connecting rod (6) adopts a cross beam tube (15); a plurality of side wall through holes (16) are distributed on the outer side wall of the middle part of the cross beam tube (15); plugs (17) and connecting joints (18) are respectively arranged at both ends of the cross beam tube (15); the side wall through holes (16) are in the beam body (2); The side wall through hole (16) exposed to the outside is blocked by plugging; The connecting joint (18) is used to connect the delivery pump (12).

4. The auxiliary equipment for bridge repair process according to claim 3 is characterized in that: The agitator (7) comprises a lifting arm (19) arranged on the maintenance vehicle (4); a horizontal plate frame (20) is arranged on the top of the lifting arm (19); A rotating shaft (21) and an auxiliary frame (22) are arranged at the lower end of the horizontal plate frame (20); One end of a side swing arm (23) is eccentrically connected to the lower end of the rotating shaft (21); The other end of the side swing arm (23) is connected to one end of a linkage arm (26) via a hinge shaft A (24); A hinge seat A (28) is hingedly connected to the lower end of the linkage arm (26) via a hinge joint (27); A short finger (29) and a long finger (30) are respectively arranged at both ends of the hinge seat A (28); A hinged guide seat (25) is arranged on the auxiliary frame (22); The linkage arm (26) moves in the hinged guide seat (25); The axis center line of the rotating shaft (21) is parallel to the axis center line of the auxiliary frame (22), and the planes where the two are located are perpendicular to the longitudinal direction of the maintenance vehicle (4).

5. The auxiliary equipment for bridge repair process according to claim 1, characterized in that: The manipulator assembly (8) comprises a mechanical vertical arm (31) which is arranged on the maintenance vehicle (4) in a lifting and swinging manner; a through-guide sleeve (33) is arranged on the top of the mechanical rotating arm (32); and a horizontal cross arm (34) is movable in the through-guide sleeve (33); A driving rod (48) is horizontally arranged on the mechanical rotating arm (32); The driving rod (48) is connected to the tail end of the horizontal cross arm (34). A swing arm (35) is swingably provided at the head end of the horizontal cross arm (34); The tail end and the head end of the horizontal cross arm (34) are respectively located on both sides of the penetrating guide sleeve (33); A clamping finger portion (36) is provided at the lower end of the swing arm (35).

6. The auxiliary equipment for bridge repair process according to claim 5, characterized in that: The clamping finger portion (36) includes a fixed bracket (37) arranged at the lower end of the swing arm (35); L-shaped end portions (41) are symmetrically arranged on both sides of the lower end of the fixing bracket (37); The fixed bracket (37) and the L-shaped end head (41) form a mountain-shaped hollow with the opening facing downwards, wherein the middle hollow is vertically penetrated downwards; A lifting drive rod (39) is arranged in the middle of the top of the fixed bracket (37); A lifting cross plate (38) is arranged at the horizontally penetrated part of the mountain-shaped hollow; The upper end of the lifting cross plate (38) is connected to the lower end of the lifting drive rod (39); Transverse guide sleeves (40) are sleeved on both sides of the lifting cross plate (38).

7. The auxiliary equipment for bridge repair process according to claim 6, characterized in that: The vertical plate of the L-shaped end head (41) faces upwards; A transverse guide through hole (42) is arranged on the vertical plate of the L-shaped end head (41); A transverse process through hole corresponding to the transverse guide through hole (42) is arranged on the fixed bracket (37); A transverse moving plate (43) moves in the transverse guide through hole (42); The transverse moving plate (43) and the transverse guide sleeve (40) on the same side are hinged through a connecting rod B (44); The upper end of a bending arm (45) is connected to the inner section of the transverse moving plate (43); 8. The auxiliary equipment for bridge repair process according to claim 7, characterized in that: A clamping finger (46) is connected to the lower cross bend of the bending arm (45); A connecting rod C (47) is hinged between the transverse guide sleeve (40) and the fixed bracket (37).

9. A bridge repair process, characterized in that: The auxiliary equipment according to claim 1; Process Comprises the following steps; Step 1, move the auxiliary equipment to the construction operation location of the bridge body (1); then, relying on the bearing platform (3), detect the prestress, steel bar orientation and position of the beam body (2) through a detector, and determine the drilling position; again, drill holes at the positions of the transverse prestressed tendons in the web; after that, roughen the bonding surface of the new and old concrete of the beam body and drill anchor bar holes; Step 2, insert the connecting rod (6) into the drilled hole; Step 3, anchor, bind and install the original steel bars and the connecting rod (6); Step 4, pour concrete into the connecting rod (6) and tension it, and seal the end head; In step 3, first, move the storage box A (10) and the storage box B (11) to the middle working position (14) respectively; then, at the middle working position (14), the clamping finger parts (36) clamp the connecting rod (6) and the reinforcing plate (5) to the beam body (2) respectively; secondly, the constructor inserts the connecting rod (6) into the drilled hole; In step 4, first, pour the precast concrete into the concrete storage box (13); then, stir it through the stirrer (7); the longitudinal direction of the stirring track is longer than the transverse direction; again, connect the delivery pump (12) and the connecting joint (18) through a pipeline; secondly, start the delivery pump (12), and the precast concrete enters through the central channel of the cross beam pipe (15) and then enters the gap between the cross beam pipe (15) and the beam body (2) through the side wall through holes (16).

10. The bridge repair process according to claim 9, characterized in that: In step three, for the manipulator assembly (8), first, the mechanical vertical arm (31) raises the mechanical rotating arm (32) to a set height; then, the clamping finger portion (36) clamps the connecting rod (6) of the storage box A (10) or the reinforcing plate (5) of the storage box B (11) respectively; secondly, while the mechanical rotating arm (32) rotates, the driving rod (48) drives the horizontal cross arm (34) to retract along the penetrating guide sleeve (33); when reaching the horizontal position, the driving rod (48) drives the horizontal cross arm (34) to extend, and the mechanical vertical arm (31) descends, so that the connecting rod (6) or the reinforcing plate (5) falls to the construction site and is transported to the construction personnel; When clamping the connecting rod (6) or the reinforcing plate (5), the lifting drive rod (39) drives the lifting horizontal plate (38) to descend, and the transverse guide sleeve (40) moves in opposite directions on the lifting horizontal plate (38). Under the hinge action of the connecting rod C (47), the connecting rod B (44) swings to drive the transverse movable plate (43) to move in opposite directions in the transverse guide through hole (42), so that the clamping fingers (46) clamp the connecting rod (6) or the reinforcing plate (5) in opposite directions. In step 4, during the mixing process, the rotating shaft (21) drives the side swing arm (23) to rotate, so that the linkage arm (26) swings, the hinge head (27) moves a long zero track, and the short finger (29) and the long finger (30) mix the concrete storage box (13) from top to bottom.

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