Operation method of self-anchored water working platform

Abstract

The present invention discloses an operation method of a self-anchored water work platform, which comprises: an assembled load-bearing pontoon comprises a left steel pontoon and a right steel pontoon fixedly connected by a fixed steel frame; a track sliding device is fixed in parallel on the top of the left steel pontoon and the right steel pontoon by two square steels; a ring drill comprises a support base finely adjusted by roller sliding and a drill bit placed at the center of the support base and penetrating the borehole downward; the bottom of the drum is movably placed on the track sliding system for fine adjustment, and the top of the drum is movably supported on the base; the self-anchor device comprises at least two hydraulic telescopic positioning devices, each of which is telescopically inserted into the riverbed and is arranged on the outside of the left steel pontoon and the right steel pontoon. The operation platform and method of the present invention ensure that the water-passing section of the river channel, the steel cage, the ring drill and other equipment and auxiliary materials are conveniently and quickly moved and placed in place, reduce the input of manpower, machinery and materials, improve work efficiency and save costs.

Description

Technical Field

[0001] The present invention relates to the technical field of water operation equipment, and in particular to a self-anchored water operation platform and an operation method. Background Art

[0002] During the construction of bridge pile foundations, conventional underwater bored pile operation platforms are commonly used for bridge pile construction in rivers with gentle water flow and water depth less than 5m. There are mainly two types of platforms. One is to use an island platform, which occupies a large area of ​​the river and is inconvenient to move during use; the other is to use a steel structure platform, which is easy to solve in terms of durability and mobility, but the disadvantage is that the manufacturing cost is high. Even if the cost is ignored for water operations, it is still a technical problem to ensure the quality of the pile head and the removal of the casing during the construction of water bored piles. Summary of the invention

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a self-anchored water working platform and operating method which utilizes the principle of buoyancy balance to solve the problems of drilling rigs, auxiliary accessories and construction loads during riverbed piling. The self-anchoring device is rooted in the bottom of the riverbed to ensure that the platform is stable and firm during the construction process, while ensuring that the water-passing section of the river channel, equipment such as steel cages and ring drilling machines and auxiliary materials can be moved and positioned conveniently and quickly, reducing the input of manpower, machinery and materials, improving work efficiency and saving costs.

[0004] The technical solution adopted by the present invention is: a self-anchored water operation platform having:

[0005] The assembled load-bearing pontoon includes a left steel pontoon and a right steel pontoon fixedly connected by a fixed steel frame, and a gap L is provided between the left steel pontoon and the right steel pontoon, and the gap L is used for the drill bit of the ring drilling machine to extend into the riverbed for drilling and positioning, thereby realizing the installation and positioning of the steel cage;

[0006] The track sliding device is composed of two square steels fixed in parallel on the top of the left and right steel pontoons to support the ring drilling machine;

[0007] A ring drilling machine, comprising a support base finely adjusted by roller sliding, and a drill bit placed at the center of the support base and penetrating downwardly through the borehole;

[0008] The roller, the bottom of which is movably placed on a track sliding device for fine adjustment, and the top of which is movably supported on a base;

[0009] The self-anchoring device comprises at least two hydraulic telescopic positioning devices, each of which is telescopically inserted into the riverbed and arranged outside the left steel pontoon and the right steel pontoon to support the stability of the left and right steel pontoons.

[0010] More preferably, the number of the rollers is at least two.

[0011] Preferably, the self-anchoring device has four hydraulic telescopic positioning devices, which are respectively fixed on the four corners of the outside of the left steel pontoon and the right steel pontoon, and each hydraulic telescopic positioning device is welded to the outside of the left steel pontoon and the right steel pontoon.

[0012] Preferably, the above-water working platform further comprises an embedded separation casing, which is formed by an outer casing and an inner casing that are movably nested, and the embedded separation casing is driven into the bottom of the riverbed by a drill bit of a circular drilling machine to locate the pile head position for installation.

[0013] More preferably, the outer diameter of the outer casing is greater than 0.5 times the outer diameter of the pile, and the inner diameter of the outer casing is consistent with the outer diameter of the inner casing.

[0014] More preferably, there is a gap L of 1.5-3.5 m between the left steel pontoon and the right steel pontoon.

[0015] More preferably, the fixed steel frame is arranged along the outer edges of the tops of the left steel pontoon and the right steel pontoon, and is formed by welding at least four square steels to the tops of the left steel pontoon and the right steel pontoon.

[0016] Preferably, the self-anchoring device further comprises a positioning column fixed to the outer edge of the left steel pontoon and the right steel pontoon, and each positioning column is provided with a hollow cavity inside for use in the telescopic shaft of each hydraulic telescopic positioning device to be telescopic.

[0017] like Figure 3 As shown, the operation method based on the above self-anchored water operation platform includes the following steps:

[0018] a. Adjust the position of the drill bit of the ring drill on the assembled load-bearing pontoon. After positioning, place the outer casing on the drill bit of the ring drill and drive it into the riverbed;

[0019] b. On the track sliding device, adjust the drill bit position by sliding the roller, and use the ring drill to drill the pile hole, and clean the mud in the drilled pile hole in time;

[0020] c. Adjust the position of the drill bit of the ring drill on the assembled load-bearing pontoon, and after positioning, place the inner casing on the drill bit of the ring drill and drive it into the riverbed;

[0021] d. Check drilling size and requirements;

[0022] e. Lower the pile head reinforcement cage;

[0023] f. Install the conduit and the feeding funnel inside the inner casing;

[0024] g. Re-inspect the pile hole size and bottom sediment thickness on the riverbed. If they exceed the specifications or design requirements, perform secondary cleaning of the pile hole through the catheter;

[0025] h. The secondary cleaning of the pile hole shall be circulated until the concrete is poured. The mud circulation cleaning shall not be stopped before the concrete is poured until the concrete is poured into the pile from the discharge funnel and the conduit;

[0026] i. Pull out the outer casing;

[0027] j. Remove the inner casing after the pile strength meets the inspection requirements.

[0028] Preferably, during the pouring of concrete in step h, first fill the discharge funnel with concrete. The amount of concrete in the discharge funnel ensures that the lower end of the conduit is buried more than 1m below the concrete surface at one time. Then quickly pull out the water stop at the bottom of the discharge funnel, and the concrete mixture quickly enters the water under the action of its own weight.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: the self-anchored assembled pontoon water operation platform and operation method of the present invention solve the pile driver load by using the buoyancy balance principle, and the self-anchor device takes root to ensure that the platform is stable and firm during the construction process, while ensuring that the river water section, the steel cage and the ring drilling machine are conveniently and quickly moved and positioned, reducing the input of manpower, machinery and materials, improving work efficiency and saving costs. The main application scope of the equipment: the water flow is gentle, the water depth is less than 5m, the pile diameter is not more than 1.5m, and the pile foundation construction of small and medium-sized bridges in the river flow.

[0030] The self-anchored assembled pontoon water operation platform and operation method of the present invention also adopts a separate nested casing pile auxiliary technology, which solves the problem of removing and reusing the inner and outer casings under the premise of the quality of the pile head in the water. Compared with the conventional method, it reduces the investment in casing, excess concrete on the pile head and the manpower for removing casing, greatly simplifies the process intervals, improves the utilization rate of casing, and provides reference and promotion significance for similar projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a structural diagram of a self-anchored water operation platform;

[0032] Figure 2 For self-anchored water working platform

[0033] Figure 3 The present invention is a flow chart of a method for preparing a self-anchored water operation platform;

[0034] Figure 4 It is a schematic diagram of the mud circulation process during the second cleaning of the pile hole;

[0035] Among them: 100-assembled load-bearing pontoon, 110-fixed steel frame, 120-left steel pontoon, 130-right steel pontoon, 140-gap L; 200-track sliding device, 210-square steel, 300-embedded separation casing, 310-outer casing, 320-inner casing; 400-ring drilling machine, 410-support base, 420-drill bit; 500-roller, 600-self-anchoring device, 610-hydraulic telescopic positioning device, 620-positioning column, 630-extended support leg. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the combination or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "up", "down", "front", "back", "left", "right" and the like in all the drawings are based on the positions or positional relationships shown in the accompanying drawings. Figure 1 As standard.

[0038] like Figure 1 As shown, the self-anchored water working platform has:

[0039] The assembled load-bearing pontoon 100 includes a left steel pontoon 120 and a right steel pontoon 130 fixedly connected by a fixed steel frame 110, and a gap L140 is provided between the left steel pontoon 120 and the right steel pontoon 130. The gap L140 is used for the drill bit 420 of the ring drilling machine 400 to extend into the riverbed for drilling and positioning, thereby realizing the installation and positioning of the steel cage;

[0040] The track sliding device 200 is composed of at least two square steels 210 fixed in parallel on the top of the left steel pontoon 120 and the right steel pontoon 130, and is used to support the ring drilling machine 400;

[0041] The ring drill 400 includes a support base 410 that is slidably fine-tuned by a roller 500, and a drill bit 420 that is placed at the center of the support base 410 and penetrates downwardly through the drill hole;

[0042] The bottom of the roller 500 is movably placed on the track sliding device 200 for fine adjustment, and the top is movably supported by the base 410, so as to facilitate the adjustment of the specific position of the drill bit of the entire ring drilling machine relative to the riverbed. In the specific implementation process, as long as the supporting base of the ring drilling machine is propped up and the roller is adjusted to the position where the pile needs to be formed on the riverbed, the position of the pile head can be adjusted within the formation range of the track sliding device of the assembled weighing pontoon, so as to achieve the precise adjustment and positioning of the pile head; in the specific implementation process, the roller 500 is made of a steel rod or a steel pipe, and limiting sleeves are set at its left and right free ends as needed to prevent the roller from rolling out of the track sliding device 200;

[0043] The self-anchoring device 600 includes at least two hydraulic telescopic positioning devices 610. Each hydraulic telescopic positioning device 610 is telescopically inserted into the riverbed and is arranged outside the left steel pontoon 120 and the right steel pontoon 130 to support the stability of the left and right steel pontoons.

[0044] The number of the rollers 500 of the self-anchored water working platform is at least two, which is convenient for supporting and moving the drilling rig 400. It can also be three or more, but if there are too many rollers, it will be inconvenient to move and the space will be limited.

[0045] The self-anchoring device 600 of the self-anchoring water work platform has four hydraulic telescopic positioning devices 610, which are respectively fixed on the four corners of the outside of the left steel pontoon 120 and the right steel pontoon 130, and each hydraulic telescopic positioning device 610 is welded to the outside of the left steel pontoon 120 and the right steel pontoon 130, thereby ensuring that the assembled load-bearing pontoon formed by the left steel pontoon and the right steel pontoon has good stability. In order to ensure the telescopic stability of the entire hydraulic telescopic positioning device 610, an extended leg 630 is inserted into its positioning column on the outside of its telescopic shaft to enhance the stability of the hydraulic telescopic device and the entire assembled load-bearing pontoon, thereby improving the entire self-anchoring water work platform. The self-anchored water working platform also includes an embedded separation casing 300, which is formed by an outer casing 310 and an inner casing 320 that are movably nested. The embedded separation casing 300 is driven into the bottom of the riverbed by the drill bit 420 of the ring drilling machine 400 to locate the position of the pile head to be installed, and then concrete is poured therein. After the pile head is delivered, the outer casing 310 is first removed, and the inner casing is removed after the concrete of the pile head reaches a certain strength. In this way, the quality of the pile head after removal is better, and the outer casing and inner casing after removal can be recycled again, which reduces the operating cost of the equipment.

[0046] The outer diameter of the outer casing 310 of the self-anchored water working platform is greater than 0.5 times the outer diameter of the pile, and the inner diameter of the outer casing 310 is consistent with the outer diameter of the inner casing 320, which is convenient for nesting and installation before positioning.

[0047] There is a gap L140 of 1.5-3.5m between the left steel pontoon 120 and the right steel pontoon 130 of the self-anchored water work platform, which can provide enough space for the installation and disassembly of equipment such as the ring drilling machine, steel cage and feeding funnel, while ensuring sufficient load.

[0048] The fixed steel frame 110 of the self-anchored water work platform is arranged along the outer edge of the top of the left steel pontoon 120 and the right steel pontoon 130 , and is formed by welding at least four square steels to the top of the left steel pontoon 120 and the right steel pontoon 130 .

[0049] The self-anchoring device 600 of the self-anchored water work platform also includes a positioning column 620 fixed to the outer edges of the left steel pontoon 120 and the right steel pontoon 130. Each positioning column 620 has a hollow cavity inside, which is used for the telescopic shaft of each hydraulic telescopic positioning device 610 to be telescopic, thereby realizing that each hydraulic telescopic positioning device can be detachably connected to the left steel pontoon 120 and the right steel pontoon 130, thereby realizing convenient disassembly, transportation and use of the hydraulic telescopic positioning device of the self-anchoring device.

[0050] The operation method based on the above self-anchored water operation platform includes the following steps:

[0051] a. Adjust the position of the drill bit of the ring drill on the assembled load-bearing pontoon. After positioning, place the outer casing on the drill bit of the ring drill and drive it into the riverbed;

[0052] b. On the track sliding device, adjust the drill bit position by sliding the roller, and use the ring drill to drill the pile hole, and clean the mud in the drilled pile hole in time;

[0053] c. Adjust the position of the drill bit of the auger on the assembled load-bearing pontoon. After positioning, place the inner casing on the drill bit of the auger and drive it into the riverbed. The auger uses its own gravity and the back pressure of its own hydraulic device to drive the outer casing and the inner casing in;

[0054] d. Check the drilling size and requirements. If it does not meet the requirements, appropriate rework and adjustments can be made;

[0055] e. Lower the pile head reinforcement cage, and the construction workers will work on the left and right steel pontoons of the working platform;

[0056] f. Install a conduit and a feeding funnel inside the inner casing to facilitate pouring of concrete;

[0057] g. Re-check the pile hole size and bottom sediment thickness on the riverbed. If the pile hole size exceeds the specification or design requirements, the pile hole shall be cleaned for the second time through the catheter. The second hole cleaning shall be carried out by the catheter. The hole cleaning shall be stopped only after the measured value of the sediment thickness at the bottom of the hole meets the design requirements. Figure 4As shown, a conduit is used to connect the outer casing and the mud pump, and the mud settling tank is used to perform mud circulation cleaning to ensure that the mud in the pile hole is not blocked or precipitated. The specific cleaning process is as follows Figure 4 As shown, the mud pump sucks the mud in the inner casing into the sedimentation tank. The filter screen in the sedimentation tank will then be poured into the inner casing through the conduit at the outlet of the mud pump for repeated circulation. The circulation direction is as follows Figure 4 As shown;

[0058] h. The secondary cleaning of the pile hole is circulated until the concrete is poured. The mud circulation cleaning shall not be stopped before the concrete is poured until the concrete is poured from the feeding hopper and the conduit into a pile. In the process of pouring concrete on the steel cage, the straight-lift conduit method (a straight section conduit) is used for underwater concrete pouring. When the conduit is lowered, it should be prevented from colliding with the steel cage. The conduit support frame is made of steel. The support frame is supported on the drilling platform to support the suspended conduit. During the concrete pouring, the drill rig is used to lift and disassemble the conduit. In the process of pouring concrete with the steel cage, when the feeding hopper is filled with concrete, a water stopper is used to isolate the bottom of the hopper. At this time, a certain amount of sediment sinks to the bottom of the inner casing. After enough concrete has sunk into the feeding hopper, the isolation stopper is pulled out to allow the concrete to quickly sink to the bottom of the inner casing, and then pour continuously;

[0059] i. Pull out the outer casing. Use a ring drill or other auxiliary equipment to pull out the outer casing. The same operation is used to pull out the inner casing;

[0060] j. Remove the inner casing after the pile strength meets the inspection requirements.

[0061] When the above-mentioned self-anchored water working platform is in operation, during the pouring of concrete in step h, the discharge funnel is first filled with concrete. The amount of concrete in the discharge funnel ensures that the lower end of the conduit is buried more than 1m below the concrete surface at one time. Then the water stopper at the bottom of the discharge funnel is quickly pulled out, and the concrete mixture quickly enters the water under the action of its own weight, which can ensure that the bottom strength of the pile obtained by pouring is better.

[0062] In summary, the self-anchored water work platform and the work method of the present invention are divided into an assembled load-bearing pontoon 100, a track sliding device 200 and a self-anchoring device 600 according to the drilling equipment of the circular drilling machine, the lowering of the pile steel cage, the auxiliary accessories and the construction load. The assembled load-bearing pontoon 100 is designed as two 8×3×1m steel pontoons on the left and right, with a space of 2m between the two pontoons. The top 4 horizontal 20×20cm square steels are consolidated with the steel pontoons to form a whole, which is used to balance the load through buoyancy; the track sliding device 200 is a parallel 20×20cm square steel track arranged longitudinally along the inner side of the top of the left and right steel pontoons, for the circular drilling machine and the drum to fine-tune their position; the self-anchoring device is a hydraulic telescopic positioning "steel claw" vertically welded at the four corners of the outer side of the left and right steel pontoons, which sinks into the riverbed to take root and support the stability of the left and right steel pontoons, thereby realizing load support.

[0063] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. The operating method of the self-anchored water working platform is characterized by: Self-anchored water working platform has: The assembled load-bearing pontoon (100) comprises a left steel pontoon (120) and a right steel pontoon (130) which are fixedly connected by a fixed steel frame (110), and a gap L (140) is provided between the left steel pontoon (120) and the right steel pontoon (130), and the gap L (140) is used for a drill bit (420) of a circular drilling machine (400) to extend into a riverbed for drilling and positioning; The track sliding device (200) is composed of at least two square steels (210) fixed in parallel on the top of the left steel pontoon (120) and the right steel pontoon (130), and is used to support the ring drilling machine (400); The ring drilling machine (400) comprises a support base (410) that is slidably fine-tuned by a roller (500), and a drill bit (420) that is placed at the center of the support base (410) and penetrates downwardly through the drilling hole; The roller (500) has a bottom that is movably placed on the track sliding device (200) for fine adjustment, and a top that movably supports the base (410); The self-anchoring device (600) comprises at least two hydraulic telescopic positioning devices (610), each hydraulic telescopic positioning device (610) is telescopically inserted into the riverbed and is arranged outside the left steel pontoon (120) and the right steel pontoon (130); the self-anchoring device (600) has four hydraulic telescopic positioning devices (610), which are respectively fixed on four corners of the outside of the left steel pontoon (120) and the right steel pontoon (130), and each hydraulic telescopic positioning device (610) is welded to the outside of the left steel pontoon (120) and the right steel pontoon (130); The above-water working platform further comprises an embedded separation casing (300), wherein the embedded separation casing (300) is formed by an outer casing (310) and an inner casing (320) being movably nested, and the embedded separation casing (300) is driven into the bottom of the riverbed by a drill bit (420) of a circular drilling machine (400) to locate the pile head position for installation; The operation method includes the following steps: a. Adjust the position of the drill bit of the ring drill on the assembled load-bearing pontoon. After positioning, place the outer casing on the drill bit of the ring drill and drive it into the riverbed; b. On the track sliding device, adjust the drill bit position by sliding the roller, and use the ring drill to drill the pile hole, and clean the mud in the drilled pile hole in time; c. Adjust the position of the drill bit of the ring drill on the assembled load-bearing pontoon, and after positioning, place the inner casing on the drill bit of the ring drill and drive it into the riverbed; d. Check drilling size and requirements; e. Lower the pile head reinforcement cage; f. Install the conduit and the feeding funnel inside the inner casing; g. Re-inspect the pile hole size and bottom sediment thickness on the riverbed. If they exceed the specifications or design requirements, perform secondary cleaning of the pile hole through the catheter; h. The secondary cleaning of the pile hole is circulated until the concrete is poured. The mud circulation cleaning shall not be stopped before the concrete is poured until the concrete is poured into the pile from the discharge funnel and the conduit. First, fill the discharge funnel with concrete. The amount of concrete in the discharge funnel ensures that the lower end of the conduit is buried more than 1m below the concrete surface at one time. Then quickly pull out the water stopper at the bottom of the discharge funnel, and the concrete mixture quickly enters the water under the action of its own weight; i. Pull out the outer casing; After the pile strength meets the inspection requirements, remove the inner casing.

2. The operation method according to claim 1, characterized in that: The number of rollers (500) is at least two.

3. The operation method according to claim 1, characterized in that: The outer diameter of the outer casing (310) is greater than 0.5 times the outer diameter of the pile, and the inner diameter of the outer casing (310) is consistent with the outer diameter of the inner casing (320).

4. The operation method according to claim 1, characterized in that: There is a gap L (140) of 1.5-3.5 m between the left steel pontoon (120) and the right steel pontoon (130).

5. The operation method according to claim 1, characterized in that: The fixed steel frame (110) is arranged along the outer edges of the tops of the left steel pontoon (120) and the right steel pontoon (130), and is formed by welding at least four square steels to the tops of the left steel pontoon (120) and the right steel pontoon (130).

6. The operation method according to claim 5, characterized in that: The self-anchoring device (600) further comprises a positioning column (620) fixed to the outer edge of the left steel pontoon (120) and the right steel pontoon (130), each positioning column (620) having a hollow cavity inside for use in the telescopic shaft of each hydraulic telescopic positioning device (610) to be telescopic.

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