Platform device for underwater column foundation construction

Abstract

The utility model provides a platform device for underwater column foundation construction, and relates to the technical field of bridge underwater pier pile foundation engineering construction. The trestle comprises a main trestle body and a branch trestle body, the branch trestle body is arranged on one side of the main trestle body, a mounting opening used for lowering a steel casing is formed in a construction platform of the branch trestle body, a positioning structure used for positioning the steel casing is arranged in the mounting opening, a plurality of storage boxes used for storing slurry are arranged on the construction platform of the branch trestle body, and the storage boxes are sequentially communicated. The branch trestle is provided with an extraction structure used for extracting slurry located in the steel casing, the extraction structure communicates with one storage box, and a slurry making structure for circulating slurry making is arranged in the storage box. An operation platform is provided for pouring equipment and slurry transfer and storage, and the situation that when concrete is poured in a pile hole and slurry is extracted or guided in, the materials are discharged into a water body in a protection area, and irreversible pollution is caused to the water body in the protection area is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge underwater pier pile foundation engineering construction, in particular to a platform device used for underwater column foundation construction. Background Art

[0002] Due to geographical location and topographical conditions, many highway, railway, and construction projects generally involve the construction of underwater bridge piers. Especially in national wetland parks and water source protection areas, underwater pile foundations cause great pollution to the environment.

[0003] In the prior art, the common method of construction is to use cofferdams to build islands, which is cost-saving and quick to take effect. However, ecological environmental protection is often the most easily overlooked part. The mud produced by drilling will be discharged into a mud pool dug nearby, and the drill cuttings after sedimentation will even be directly discharged into nearby rivers. The environmental pollution generated during the process is self-evident. During the construction of underwater pier foundations, the construction efficiency is low and the construction operation is cumbersome because it is time-consuming and labor-intensive to build mud pools and sedimentation pools. In addition, the on-site excavation and construction of mud pools and sedimentation pools will cause great pollution to the local waters, and the quality of environmental protection cannot be guaranteed, resulting in poor environmental protection effects. Utility Model Content

[0004] The purpose of the utility model is to provide a platform device for underwater column foundation construction, which can solve the problems raised by the above-mentioned background technology in view of the shortcomings of the prior art.

[0005] The technical solution of the utility model is achieved in this way:

[0006] The utility model provides a platform device for underwater column foundation construction, comprising a main trestle and a branch trestle, wherein the branch trestle is arranged on one side of the main trestle, an installation opening for lowering a steel casing is opened on the construction platform of the branch trestle, a positioning structure for positioning the steel casing is arranged in the installation opening, a plurality of storage boxes for storing mud are arranged on the construction platform of the branch trestle, and the plurality of storage boxes are connected in sequence, an extraction structure for extracting mud in the steel casing is arranged on the branch trestle, the extraction structure is connected with one of the plurality of storage boxes, and a slurrying structure for circulating slurrying is arranged in the storage box.

[0007] In some technical solutions of the utility model, the positioning structure includes a positioning steel casing, which is installed in the installation opening. A plurality of positioning members are arranged around the outer wall of the positioning steel casing, and the positioning members are fixedly connected to the supporting trestle.

[0008] In some technical solutions of the utility model, protective steel plates are laid on the main trestle and the branch trestle.

[0009] In some technical solutions of the utility model, drainage pipes are installed on the main trestle and the branch trestle, and a flow channel is provided on the outer side of the protective steel plate, and the flow channel is connected to the drainage pipe.

[0010] In some technical solutions of the utility model, guardrails are provided on both sides of the main trestle and the branch trestle.

[0011] In some technical solutions of the utility model, a driving assembly for controlling the movement of the branch trestles along the extension direction thereof is provided on the main trestle.

[0012] In some technical schemes of the present utility model, the driving assembly includes a mounting base arranged on the side wall of the main trestle along the extension direction of the main trestle, the mounting base is provided with a guide rail member slidably connected to the branch trestle, and the branch trestle is provided with a pulley mechanism adapted to the guide rail member; a sliding rail is provided between the mounting base and the main trestle in a vertical direction, a guide member connected to the main trestle is slidably provided in the sliding rail, and a pushing member connected to the guide member is provided on the mounting base.

[0013] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects:

[0014] After the storage boxes are set up in sequence and connected in sequence, the output end of the extraction structure is connected to the storage box located at the head. The storage box located at the head is used to store mud, sand and gravel extracted from the steel casing by the extracted structure. A slurrying structure for circulating slurrying is provided in the storage box. The mud extracted from the steel casing is added to the pre-prepared mud for mixing and then added to the storage box to improve the utilization efficiency of the mud. Excess mud blocks of sand and gravel in the mud can also be separated. After the mud is settled, the sediment is pulled out of the water source protection area for treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a front view structural schematic diagram of the main trestle and the branch trestle in the utility model;

[0017] Figure 2 It is a schematic diagram of the top view of the main trestle and the branch trestle in the utility model;

[0018] Figure 3 for Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the installation structure of the protective steel plate in the utility model;

[0020] Figure 5 It is a right side structural schematic diagram of the middle branch trestle of the utility model;

[0021] Figure 6 It is a schematic diagram of the combined structure of the storage box in the utility model.

[0022] Icons: 1. Main trestle; 2. Support trestle; 3. Positioning steel casing; 4. Storage box; 5. Pillar; 6. Protective steel plate; 7. Positioning parts; 8. Pulping structure; 9. Extraction structure; 10. Guardrail; 11. Pulley mechanism; 12. Guide rail; 13. Mounting base; 14. Pusher; 15. Slide rail; 16. Guide part; 17. Drainage pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Example 1

[0026] Please refer to Figure 1-Figure 6 shown.

[0027] The utility model provides a platform device for underwater column foundation construction, such as Figure 1 , Figure 2As shown, it includes a main trestle 1 and a branch trestle 2. The main trestle 1 is set up in the construction area, and the main trestle 1 is arranged at the left side of the pier in the water. The branch trestle 2 is arranged on the main trestle 1 and is flush with the pier position. The branch trestle 2 is set on one side of the main trestle 1. The main trestle 1 and the branch trestle 2 are both steel structure platforms. The steel structure platform is fixed in the water body of the water source through a pillar 5, providing an operating platform for the transportation and storage of casting equipment and mud, avoiding pouring concrete in the pile hole and extracting mud or introducing mud. When the slurry is poured, the above substances are discharged into the water body in the protected area, causing irreversible pollution to the water body in the protected area. An installation opening for lowering the steel casing is opened on the construction platform of the supporting trestle 2, and a positioning structure for positioning the steel casing 3 is arranged in the installation opening, which is used to prevent the slurry from overflowing from the steel casing into the water body and causing pollution to the water source when pouring concrete and introducing the manufactured slurry into the steel casing or extracting it from the steel casing in the later stage; a storage tank for storing slurry is provided on the construction platform of the supporting trestle 2. A plurality of storage boxes 4 are provided, wherein the number of the storage boxes 4 is 3, and the 3 storage boxes 4 are arranged in sequence and connected in sequence, and the extraction structure 9 is connected with the storage box 4 located at the head, and the storage box 4 located at the head is used to store the mud and gravel extracted from the steel casing by the extraction structure 9, and a slurry making structure 8 for circulating slurry is provided in the storage box 4, and the mud extracted from the steel casing is added to the pre-prepared mud for mixing and use, and then added to the storage box 4, so as to improve the utilization efficiency of the mud, and the excess mud blocks of the sand and gravel in the mud can be separated, and the sediment is pulled out of the water source protection area for treatment after the mud is precipitated, so as to avoid the construction of a mud pool in the protection area to cause environmental pollution, and the subsequent mud entering the protection area or being omitted in the protection area, and the arranged storage box 4 can be moved with the supporting trestle 2, and the mud derived from the pile hole construction in the protection area is circulated for treatment, so as to improve the efficiency of the pile hole construction of the structure, and the mud discharged from the pile hole can be recycled, so as to improve the utilization efficiency of the slurry and reduce the generation of pollutants.

[0028] Preferably, the slurry making structure 8 is specifically at least two filter screens arranged in the storage box 4, which are used to filter large pieces of slag or mud and sand in the slurry. And the three storage boxes 4 arranged therein can be used as sedimentation tanks.

[0029] Preferably, the size of the storage box 4 is: 2.25*7.5*4.8 (height*length*width)=81m3, and the capacity meets the mud circulation of a single pile foundation. The storage box 4 is provided with 4 lifting points, which are respectively arranged on the top of the long side steel plate with a spacing of 2.5m. The lifting points should be reinforced by welding steel plates on both sides of the steel plate. During lifting, the top support is installed at the lifting point, and the support plate is welded and punched on the inner side of the steel plate. The holes at both ends of the top support are connected to the support plate and topped to the steel plate by bolts. After the welding of the storage box 4 is completed, it is necessary to reinforce the bottom and weld triangular supports at the four inner corners.

[0030] Steps for repeated use of slurry:

[0031] When drilling, the drill bit is pumped out of the hole along with the mud and enters the storage box 4 at the head end, and then the stone bit is fished out. After secondary filtration in the storage box 4 in the middle, the treated mud is introduced into the storage box 4 at the tail end, and then returned to the drilled hole after sedimentation and purification, forming a continuous cycle; the mud box is turned several times in the order of the construction pile positions. The drilling waste (waste mud) is uniformly collected and transported in a closed tank truck to a treatment plant outside the protection area for treatment. It must not be arbitrarily piled on the construction site or discharged directly into the river to avoid polluting the environment. During the construction process, pay close attention to the tightness of the mud extraction pipe to prevent leakage.

[0032] In some technical solutions of the utility model, the positioning structure includes a positioning casing, which is installed in the installation port, and a plurality of positioning members 7 are arranged around the outer wall of the positioning casing, and the positioning members 7 are fixedly connected to the supporting pier 2. Because the construction is carried out on water, the center of the pile foundation cannot be directly positioned during the construction of the steel platform, so a guide structure is used as the positioning casing, and a gap of 3 to 5 cm is left on each side of the positioning casing to reduce the collision between the casing and the positioning casing when the steel casing is lowered. Four positioning members 7, four I 20a I-beams, and four positioning members 7 are firmly welded on the steel platform to guide the steel casing to sink.

[0033] Steel casing can be made of 10mm steel plate, whose inner diameter is 200mm larger than the drill bit diameter. The buried length of the underwater casing needs to penetrate the silt layer (casing length: underwater steel platform 12m). In order to increase rigidity and prevent deformation, a stiffening rib is welded on the upper and lower ports and the outer side of the middle of the longer casing. 1 to 2 overflow holes are opened on the upper part.

[0034] When burying the casing on the steel platform, first let the crawler crane clamp the casing with a vibrating hammer and a clamp, hang the casing above the pile position and align it with the center point of the pile foundation, use the vertical wire of the total station to look at one side of the casing, determine the verticality of the casing, and use the intercom to command the on-site personnel to adjust it. After the verticality of the casing is adjusted, the on-site personnel command the crane to let the casing sink slowly. Then start the vibrating hammer and drive the casing into the soil. When the casing is about to reach the designed position, turn on and off the vibrating hammer at any time to stop the vibration when the top of the casing reaches the designed height. After the casing is lowered, a wooden board is placed on the casing, and the center point of the casing is released by the surveying team. Then pull out the distance from the center of the casing to the edge of the casing to determine whether the positioning of the casing meets the requirements of the specification, and record the data; at the same time, use a level ruler or a plumb ball to check to make the steel casing straight.

[0035] In some technical solutions of the present utility model, protective steel plates 6 are laid on the main trestle bridge 1 and the branch trestle bridge 2 to increase the bearing capacity and structural strength of the main trestle bridge 1 and the branch trestle bridge 2.

[0036] In some technical solutions of the utility model, drainage pipes 17 are installed on the main trestle 1 and the branch trestle 2, and a flow channel is provided on the outer side of the protective steel plate 6, which is connected to the drainage pipe 17. The main trestle 1 and the branch trestle are laid with fully welded steel plates, and are sealed with waterproof plates or other sealing materials on all sides. They are connected to the drainage pipe 17 at the lowest point along the longitudinal slope direction, and are collected to the centralized treatment point through the pipe for treatment, so as to prevent mechanical oil leakage or mud leakage from polluting the water source of the protected area.

[0037] In some technical solutions of the present invention, guardrails 10 are provided on both sides of the main trestle 1 and the branch trestle 2. They are used to prevent construction workers or construction vehicles from falling into the river, provide warnings for the construction workers and construction vehicles, and ensure construction safety.

[0038] In some technical solutions of the utility model, a driving assembly for controlling the movement of the branch trestles 2 along the extension direction thereof is provided on the main trestle 1 .

[0039] In some technical schemes of the present utility model, the driving assembly includes a mounting base 13 arranged on the side wall of the main trestle 1 along the extension direction of the main trestle 1, the mounting base 13 is provided with a guide rail member 12 slidably connected to the branch trestle 2, and the branch trestle 2 is provided with a pulley mechanism 11 adapted to the guide rail member 12; a slide rail 15 is arranged between the mounting base 13 and the main trestle 1 in the vertical direction, a guide member 16 connected to the main trestle 1 is slidably arranged in the slide rail 15, and a pushing member 14 connected to the guide member is arranged on the mounting base; the branch trestle 2 is provided with a pulley mechanism 11 adapted to the guide rail member 12, and the above structure can ensure that the branch trestle 2 can move along the extension direction of the main trestle 1 until the branch trestle 2 moves to the next pile foundation construction station, and the installation A slide rail 15 is provided in the vertical direction along the upper side between the mounting base 13 and the main trestle 1. The slide rail 15 is fixedly connected to the mounting base 13. A guide member 16 connected to the main trestle 1 is slidably provided in the slide rail 15. A pushing member 14 connected to the guide member 16 is provided on the mounting base 13. In this way, when the branch trestle 2 moves relative to the main trestle 1, the branch trestle 2 can be lifted to a certain height until the branch trestle 2 is higher than the poured pile foundation. Then, the translational movement of the branch trestle 2 can be started, and the reciprocating movement of the branch trestle 2 in the vertical direction can be assisted by the lifting equipment to avoid the pile foundation hindering the movement of the branch trestle 2. The driving component arranged for this structure can make the branch trestle 2 move along the extension direction of the main trestle 1 until the branch trestle 2 moves to the next pile foundation construction station, thereby improving the construction efficiency of this equipment.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A platform device for underwater column foundation construction, characterized in that: It includes a main trestle and a branch trestle, wherein the branch trestle is arranged on one side of the main trestle, an installation opening for lowering a steel casing is opened on the construction platform of the branch trestle, a positioning structure for positioning the steel casing is arranged in the installation opening, a plurality of storage boxes for storing mud are arranged on the construction platform of the branch trestle, and the plurality of storage boxes are connected in sequence, an extraction structure for extracting mud in the steel casing is arranged on the branch trestle, the extraction structure is connected to one of the plurality of storage boxes, and a slurrying structure for circulating slurrying is arranged in the storage box.

2. A platform device for underwater column foundation construction according to claim 1, characterized in that: The positioning structure comprises a positioning steel casing, which is installed in the installation opening. A plurality of positioning members are arranged around the outer wall of the positioning steel casing, and the positioning members are fixedly connected to the supporting trestle.

3. A platform device for underwater column foundation construction according to claim 1, characterized in that: The main trestle and the branch trestle are both paved with protective steel plates.

4. A platform device for underwater column foundation construction according to claim 3, characterized in that: Drainage pipes are installed on the main trestle and the branch trestle, and a flow channel is provided on the outer side of the protective steel plate, and the flow channel is connected with the drainage pipe.

5. A platform device for underwater column foundation construction according to any one of claims 1 to 4, characterized in that: Both sides of the main trestle and the branch trestle are provided with guardrails.

6. The platform device for underwater column foundation construction according to claim 1, characterized in that: The main trestle is provided with a driving assembly for controlling the branch trestle to move along its extension direction.

7. A platform device for underwater column foundation construction according to claim 6, characterized in that: The driving assembly includes a mounting base arranged on the side wall of the main trestle along the extension direction of the main trestle, the mounting base is provided with a guide rail member slidably connected to the branch trestle, and the branch trestle is provided with a pulley mechanism adapted to the guide rail member; a sliding rail is provided between the mounting base and the main trestle in the vertical direction, a guide member connected to the main trestle is slidably provided in the sliding rail, and a pushing member connected to the guide member is provided on the mounting base.

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