Construction method for pulling out steel pipe pile in water limited space

Abstract

The invention relates to the technical field of bridge construction, and discloses a construction method for pulling out a steel pipe pile in an overwater limited space, which comprises the following construction steps: 1) paving a buoyancy tank platform on a construction position; (2) a hydraulic vibration hammer is installed on the steel pipe pile; (3) the pile clamping device is clamped on the periphery of the steel pipe pile; (4) a hydraulic vibration hammer is driven to vibrate the steel pipe pile, and the lifting mechanism drives the hydraulic vibration hammer to pull away the steel pipe pile upwards; the hydraulic jack is driven to jack the pile clamping device upwards; (5) the step (4) is repeated, and when the steel pipe pile is pulled away by a set distance, the steel pipe pile is disassembled till the steel pipe pile is pulled out; a buoyancy tank platform is adopted as a construction platform, a steel pipe pile is clamped and fixed through a pile clamping device, lifting is conducted through a hydraulic jack, then a hydraulic vibration hammer is matched with a lifting mechanism to conduct vibration lifting on the steel pipe pile, and the pulling and lifting effect on the steel pipe pile is achieved; the construction mode is suitable for a low operation space, meanwhile, construction operation is simple, and the pile pulling efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and more particularly, to a construction method for pulling out steel pipe piles in a limited water space. Background Art

[0002] With the growth of China's economy and the development of the transportation industry, the construction of highway bridges has been increasing. Steel pipe piles are mainly used as temporary facilities in construction trestles. The consumption of steel pipe piles is large and the application range is wide. If they are used solely as construction trestles and are built on the side of the bridge, they can be directly pulled out after the project is completed, and the upper operating space is not restricted.

[0003] However, in fact, in many water project constructions, steel pipe piles are used as temporary facilities in the construction process of bridge box girders. A steel beam is erected on the top of the steel pipe pile, a Bailey longitudinal beam is arranged on the beam, and a scaffolding is erected on it to form a full hall support. Forms are laid on the full hall support, and then the box girder is poured. After the bridge is completed, the full hall support, Bailey beam, and steel beam are removed in sequence, and only the steel pipe piles remain in the water. Currently, the main pile pulling methods include the method of using a crawler crane in cooperation with a vibration hammer to pull out piles, the method of static pressure pulling out piles with a full casing, the method of high-pressure water jet pulling out piles, etc. The above construction methods have high requirements for the operation space. When the steel pipe piles are located directly below the bridge and are pulled out in the water, the construction space is limited, resulting in large construction machinery being unable to enter under the bridge, which makes it difficult to pull out piles in a limited water space.

[0004] Currently, the removal of underwater steel pipe pile foundations mainly uses the method of underwater cutting. This method has high costs, great construction operation difficulties, and at the same time causes a large amount of steel resources to be discarded to the bottom of the riverbed, which is not conducive to environmental protection. Summary of the Invention

[0005] The purpose of the present invention is to provide a construction method for pulling out steel pipe piles in a limited water space, aiming to solve the problem of difficult pile pulling in a limited water space in the prior art.

[0006] The present invention is implemented as follows. The construction method for pulling out steel pipe piles in a limited water space includes the following construction steps:

[0007] 1), Construction preparation: Recheck and determine the construction position under low water clearance. Lay a floating box platform on the construction position. A pile pulling opening is provided on the floating box platform, and the steel pipe pile is located in the pile pulling opening;

[0008] 2), A hydraulic jack and a support structure are erected on the floating box platform. A hydraulic vibration hammer is connected to the support structure, and the hydraulic vibration hammer is installed on the top of the steel pipe pile;

[0009] 3), Clamp the pile gripper on the outer periphery of the steel pipe pile. The hydraulic jack is connected to the pile gripper, and the hydraulic vibratory hammer is connected to the support structure through a hoisting mechanism;

[0010] 4), Drive the hydraulic vibratory hammer to vibrate the steel pipe pile, and drive the hydraulic vibratory hammer upward by the hoisting mechanism to pull out the steel pipe pile, realizing pulling out while vibrating; Drive the hydraulic jack to jack the pile gripper upward;

[0011] 5), When the steel pipe pile is pulled out to a set distance by repeating step 4), disassemble the steel pipe pile until the steel pipe pile is pulled out.

[0012] Further, in the construction step 1), the floating box platform is made of steel.

[0013] Further, in the construction step 2), the support structure includes a portal frame. The cross-section of the portal frame is in a portal shape. The hydraulic vibratory hammer is hoisted on the top of the portal frame through the hoisting mechanism. A construction guiding flat layer is welded to the bottom of the portal frame, and the construction guiding flat layer is arranged in a grid shape on the top of the floating box platform.

[0014] Further, a construction plane is formed on the top of the floating box platform. A plurality of cushion beams are arranged on the construction plane. The plurality of cushion beams are arranged side by side at intervals along the length direction of the construction plane to form a cushion platform, and the construction guiding flat layer is installed on the cushion platform.

[0015] Further, the construction guiding flat layer includes transverse distribution beams and longitudinal distribution beams, and the transverse distribution beams and the longitudinal distribution beams are arranged in a grid shape with each other.

[0016] Further, the portal frame includes two relatively spaced portal frame columns. The tops of the two portal frame columns are connected by a portal frame cross beam. The hydraulic vibratory hammer is hoisted on the portal frame cross beam through the hoisting mechanism. The bottom of the portal frame column is welded to the middle of the portal frame bottom longitudinal beam. Both sides of the portal frame bottom longitudinal beam are welded and fixed to the portal frame column through portal frame diagonal braces, and the portal frame bottom longitudinal beam is connected to the construction guiding flat layer.

[0017] Further, in the construction step 3), the hoisting mechanism includes a winch and a pulley block. The pulley block is composed of a fixed pulley and a movable pulley located below the fixed pulley. The pulley block is installed on the portal frame, and the steel wire rope of the winch passes around the pulley block and is fixed to the hydraulic vibratory hammer.

[0018] Further, in the construction step 1), a plurality of floating platforms are arranged on the outer side of the floating box platform. The plurality of floating box platforms are arranged at intervals along the circumferential direction of the outer side of the floating box platform, and adjacent floating platforms are connected by an extensible platform with elastic deformation.

[0019] Further, the floating platform includes a floating plate, which is arranged in an arc shape. The inner side wall of the floating plate abuts against the outer side of the floating box platform. The bottom of the floating box platform is located below the floating plate. A first anti-collision strip is arranged on the outer side wall of the floating plate, and the first anti-collision strip extends along the outer length direction of the floating plate. The floating plate and the floating box platform are foldably connected.

[0020] Further, the extensible platform includes a second anti-collision strip with elastic deformation and a floating film with elastic deformation. The two ends of the second anti-collision strip are respectively connected to two first anti-collision strips. A side floating area is formed at intervals between the two first anti-collision strips. The floating film covers the side floating area. The second anti-collision strip is connected to the floating box platform through the floating film. A telescopic push rod is arranged on the floating box platform, and one end of the push rod is connected to the second anti-collision strip.

[0021] Compared with the prior art, the construction method for extracting steel pipe piles in a limited water area provided by the present invention uses a floating box platform as a construction platform, clamps and fixes the steel pipe piles by a pile gripper, lifts them by a hydraulic jack, and then vibrates and hoists the steel pipe piles by a hydraulic vibratory hammer in cooperation with a lifting mechanism to achieve the effect of extracting the steel pipe piles. This construction method is applicable to low operation spaces, has simple construction operations, and high pile extraction efficiency, solving the problem of difficult construction in extracting steel pipe piles in a limited water area. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic construction process diagram of the construction method for extracting steel pipe piles in a limited water area provided by the present invention;

[0023] Figure 2 is a front view structural diagram of the floating box platform and the support structure provided by the present invention;

[0024] Figure 3 is a side view structural diagram of the floating box platform and the support structure provided by the present invention;

[0025] Figure 4 is a top view structural diagram of the floating box platform provided by the present invention.

[0026] In the figure: floating box platform 10, support structure 20, hydraulic jack 30, pile gripper 40, hydraulic vibratory hammer 50, hoisting mechanism 60, buoyancy increasing platform 70, extending platform 80, pile extraction opening 11, cushion beam 12, portal frame 21, construction guiding flat layer 22, portal frame column 211, portal frame cross beam 212, portal frame bottom longitudinal beam 213, portal frame diagonal brace 214, transverse distribution beam 221, longitudinal distribution beam 222, winch 61, pulley block 62, steel wire rope 63, floating board 71, first anti-collision strip 72, second anti-collision strip 81, floating film 82, push rod 83. Detailed implementation manners

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration and cannot be understood as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Refer to Figures 1-4 as shown, which is a preferred embodiment provided by the present invention.

[0031] The construction method for extracting steel pipe piles in a limited water area includes the following construction steps:

[0032] 1), Construction preparation: Recheck and determine the construction position under low water clearance, lay the floating box platform 10 at the construction position, a pile extraction opening 11 is provided on the floating box platform 10, and the steel pipe pile is located in the pile extraction opening 11;

[0033] 2), A hydraulic jack 30 and a support structure 20 are arranged on the floating box platform 10, a hydraulic vibratory hammer 50 is connected to the support structure 20, and the hydraulic vibratory hammer 50 is installed on the top of the steel pipe pile;

[0034] 3), Clamp the pile gripper 40 on the outer periphery of the steel pipe pile, the hydraulic jack 30 is connected to the pile gripper 40, and the hydraulic vibratory hammer 50 and the support structure 20 are connected through a hoisting mechanism 60;

[0035] 4), Drive the hydraulic vibratory hammer 50 to vibrate the steel pipe pile, and drive the hydraulic vibratory hammer 50 upward by the hoisting mechanism 60 to pull out the steel pipe pile, so as to realize pulling out while vibrating; Drive the hydraulic jack 30 to push the pile gripper 40 upward;

[0036] 5), When repeating step 4) to pull out the steel pipe pile to a set distance, disassemble the steel pipe pile until the steel pipe pile is pulled out.

[0037] The above-provided construction method for pulling out steel pipe piles in a limited water area uses the floating box platform 10 as the construction platform, uses the pile gripper 40 to clamp and fix the steel pipe pile, lifts it by the hydraulic jack 30, and then uses the hydraulic vibratory hammer 50 in cooperation with the hoisting mechanism 60 to vibrate and lift the steel pipe pile, so as to achieve the pulling effect of the steel pipe pile; This construction method is applicable to low working spaces, and the construction operation is simple, and the pile pulling efficiency is high, solving the problem of difficult construction in pulling out steel pipe piles in a limited water area.

[0038] The floating box platform 10 positions and pulls out the steel pipe pile through the pile pulling port 11, and through the support structure 20, the pile pulling load can be better evenly distributed to the construction plane of the floating box platform 10, preventing the floating box platform 10 from overturning due to uneven force.

[0039] In this embodiment, in construction step 1), the floating box platform 10 is made of steel; in this way, the stability of the support structure 20 of the floating box platform 10 can be increased.

[0040] In this embodiment, in construction step 2), the support structure 20 includes a portal frame 21, the cross-section of the portal frame 21 is in a portal shape, the hydraulic vibratory hammer 50 is hoisted on the top of the portal frame 21 by the hoisting mechanism 60, and a construction guiding flat layer 22 is welded to the bottom of the portal frame 21, and the construction guiding flat layer 22 is arranged in a grid shape on the top of the floating box platform 10.

[0041] The hoisting mechanism 60 can better hoist the hydraulic vibratory hammer 50 through the portal frame 21, and increase the stability of the hydraulic vibratory hammer 50 during the construction process. The portal frame 21 is in a portal shape, which can better distribute the load force, and the load force can be further distributed to the construction plane of the floating box platform 10 by using the construction guiding flat layer 22.

[0042] In this embodiment, a construction plane is formed on the top of the floating box platform 10, and a plurality of cushion beams 12 are arranged on the construction plane. The plurality of cushion beams 12 are arranged side by side at intervals along the length direction of the construction plane to form a cushion platform, and the construction guiding flat layer 22 is installed on the cushion platform.

[0043] The floating box platform 10 can better install the construction guiding flat layer 22 on the floating box platform 10 through the arrangement of the cushion platform, and distribute the pile pulling load force to the construction plane.

[0044] In this embodiment, the construction guiding flat layer 22 includes a transverse distribution beam 221 and a longitudinal distribution beam 222, and the transverse distribution beam 221 and the longitudinal distribution beam 222 are arranged in a crisscross pattern.

[0045] By arranging the transverse distribution beam 221 and the longitudinal distribution beam 222 in a crisscross pattern, the pile pulling load is evenly distributed on the floating box platform 10 to prevent uneven stress and prevent the floating box platform 10 from capsizing.

[0046] In this embodiment, the door frame 21 includes two relatively spaced-apart door frame columns 211. The tops of the two door frame columns 211 are connected by a door frame cross beam 212. The hydraulic vibratory hammer 50 is hoisted on the door frame cross beam 212 by a hoisting mechanism 60. The bottoms of the door frame columns 211 are welded to the middle part of the door frame bottom longitudinal beam 213. Both sides of the door frame bottom longitudinal beam 213 are welded and fixed to the door frame columns 211 through door frame diagonal braces 214. The door frame bottom longitudinal beam 213 is connected to the construction guiding flat layer 22.

[0047] The door frame 21 can increase the contact area with the construction guiding flat layer 22 through the door frame bottom longitudinal beam 213, and use the door frame diagonal braces 214 to be connected to the door frame diagonal braces 214 and the door frame columns 211 respectively to enhance the overall structural stability of the door frame 21.

[0048] In this embodiment, in construction step 3), the hoisting mechanism 60 includes a winch 61 and a pulley block 62. The pulley block 62 is composed of a fixed pulley and a movable pulley located below the fixed pulley. The pulley block 62 is installed on the door frame 21. The steel wire rope 63 of the winch 61 bypasses the pulley block 62 and is fixed to the hydraulic vibratory hammer 50.

[0049] The winch 61 can hoist the hydraulic vibratory hammer 50 through the cooperation of the steel wire rope 63 and the pulley block 62, and play a lifting effect on pile pulling.

[0050] In this embodiment, in construction step 1), a plurality of buoyancy increasing platforms 70 are arranged on the outer side of the floating box platform 10. The plurality of floating box platforms 10 are arranged at intervals along the outer circumference of the floating box platform 10. Adjacent buoyancy increasing platforms 70 are connected by an elastic deformation extension platform 80.

[0051] The bearing capacity of the floating box platform 10 is increased through the plurality of buoyancy increasing platforms 70. The extension platform 80 can further increase the bearing capacity and stability of the floating box platform 10, and can also play a buffering role in the impact during the process of the floating box platform 10 approaching the shore.

[0052] In this embodiment, the buoyancy-increasing platform 70 includes a floating board 71. The floating board 71 is arranged in an arc shape. The inner side wall of the floating board 71 abuts against the outer side of the floating box platform 10. The bottom of the floating box platform 10 is located below the floating board 71. A first anti-collision strip 72 is provided on the outer side wall of the floating board 71. The first anti-collision strip 72 extends along the outer length direction of the floating board 71. The floating board 71 and the floating box platform 10 are foldably connected.

[0053] The buoyancy-increasing platform 70 can increase the buoyancy of the floating box platform 10 through the floating board 71, thereby increasing the bearing capacity of the floating box platform 10. The floating board 71 can play a role in buffering the impact during the process of the floating box platform 10 approaching the shore through the first anti-collision strip 72, and the floating board 71 can be folded and stored.

[0054] In this embodiment, the extension platform 80 includes a second anti-collision strip 81 with elastic deformation and a floating film 82 with elastic deformation. The two ends of the second anti-collision strip 81 are respectively connected to the two first anti-collision strips 72. A side floating area is formed by the interval between the two first anti-collision strips 72. The floating film 82 covers the side floating area. The second anti-collision strip 81 and the floating box platform 10 are connected through the floating film 82. A telescopic push rod 83 is provided on the floating box platform 10. One end of the push rod 83 is connected to the second anti-collision strip 81.

[0055] The extension platform 80 can increase the buoyancy of the floating box platform 10 through the floating film 82, thereby increasing the bearing capacity of the floating box platform 10. The second anti-collision strip 81 can play a role in buffering the impact during the process of the floating box platform 10 approaching the shore. The floating box platform 10 can telescopically push the second anti-collision strip 81 through the push rod 83, so as to stretch the floating film 82 by the second anti-collision strip 81, thereby further increasing the buoyancy and bearing capacity of the floating box platform 10.

[0056] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A construction method for removing steel pipe piles in a limited space above water, characterized in that: The construction steps include: 1) Construction preparation: Review and determine the construction position under low water clearance, lay the pontoon platform on the construction position, and open a pile extraction opening on the pontoon platform, and the steel pipe pile is located in the pile extraction opening; 2) A hydraulic jack and a supporting structure are set up on the pontoon platform, a hydraulic vibration hammer is connected to the supporting structure, and the hydraulic vibration hammer is installed on the top of the steel pipe pile; 3) Clamp the pile clamp on the outer periphery of the steel pipe pile, connect the hydraulic jack to the pile clamp, and connect the hydraulic vibration hammer to the supporting structure through a lifting mechanism; 4) driving the hydraulic vibration hammer to vibrate the steel pipe pile, and driving the hydraulic vibration hammer upwards through the lifting mechanism to pull out the steel pipe pile, thereby achieving pulling out while vibrating; driving the hydraulic jack to push the pile clamp upwards; 5) Repeat step 4) and when the steel pipe pile is pulled out to a set distance, disassemble the steel pipe pile until the steel pipe pile is pulled out.

2. The method for removing steel pipe piles in a limited space above water as claimed in claim 1, characterized in that: In the construction step 1), the pontoon platform is made of steel.

3. The construction method for removing steel pipe piles in a limited space above water as claimed in claim 1, characterized in that: In the construction step 2), the supporting structure includes a door frame, the cross-section of the door frame is a door-shaped structure, the hydraulic vibratory hammer is hoisted on the top of the door frame by the lifting mechanism, and a construction guide leveling layer is welded to the bottom of the door frame, and the construction guide leveling layer is arranged in a criss-cross shape on the top of the pontoon platform.

4. The construction method for removing steel pipe piles in a limited space above water as claimed in claim 3, characterized in that: A construction plane is formed on the top of the pontoon platform, and a plurality of cushion beams are arranged on the construction plane. The plurality of cushion beams are arranged side by side in sequence and spaced apart along the length direction of the construction plane to form a cushion platform, and the construction guide plane is installed on the cushion platform.

5. The construction method for removing steel pipe piles in a limited space above water as claimed in claim 4, characterized in that: The construction guide leveling layer includes a transverse distribution beam and a longitudinal distribution beam, and the transverse distribution beam and the longitudinal distribution beam are staggered and arranged in a tic-tac-toe shape.

6. The construction method for removing steel pipe piles in a limited space above water according to any one of claims 3 to 5, characterized in that: The portal frame includes two portal columns arranged at a relative interval, the tops of the two portal columns are connected by a portal crossbeam, the hydraulic vibratory hammer is hoisted on the portal crossbeam by the lifting mechanism, the bottom of the portal column is welded to the middle part of the portal bottom longitudinal beam, the two sides of the portal bottom longitudinal beam are respectively welded and fixed to the portal columns by portal diagonal braces, and the portal bottom longitudinal beam is connected to the construction guide level.

7. The method for removing steel pipe piles in a limited space above water as claimed in claim 3, characterized in that: In the construction step 3), the lifting mechanism includes a winch and a pulley block, the pulley block consists of a fixed pulley and a movable pulley located below the fixed pulley, the pulley block is installed on the door frame, and the wire rope of the winch is fixed on the hydraulic vibration hammer after passing through the pulley block.

8. The construction method for removing steel pipe piles in a limited space above water as claimed in claim 1, characterized in that: In the construction step 1), a plurality of floating platforms are provided on the outer side of the pontoon platform. The plurality of floating platforms are arranged around and spaced along the outer circumference of the pontoon platform, and adjacent floating platforms are connected by elastically deformable stretching platforms.

9. The construction method for removing steel pipe piles in a limited space above water as claimed in claim 8, characterized in that: The buoyancy-enhancing platform includes a floating plate, which is arranged in an arc shape. The inner wall of the floating plate abuts against the outer side of the pontoon platform. The bottom of the pontoon platform is located below the floating plate. A first anti-collision strip is provided on the outer side wall of the floating plate. The first anti-collision strip extends along the outer length direction of the floating plate. The floating plate and the pontoon platform are foldably connected.

10. The construction method for removing steel pipe piles in a limited space above water as claimed in claim 9, characterized in that: The extension platform includes a second anti-collision strip with elastic deformation and a floating membrane with elastic deformation, the two ends of the second anti-collision strip are respectively connected to the two first anti-collision strips, a side floating area is formed between the two first anti-collision strips, the floating membrane covers the side floating area, the second anti-collision strip is connected to the pontoon platform through the floating membrane, and a telescopic push rod is arranged on the pontoon platform, one end of the push rod is connected to the second anti-collision strip.

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