Construction method of overhanging platform of outer edge of water structure

Abstract

The present application relates to the technical field of water construction structure construction, and particularly relates to a construction method of an outer edge overhanging platform of a water building, comprising the following steps: S1: hoisting the overhanging part to a position, so that the overhanging part is oppositely arranged with the mounting part; S2: setting anchor piles and support piles on the mounting part at intervals, and setting a counter-pressure beam on the anchor piles; S3: setting a main beam on the top of the support piles, so that one end of the main beam is arranged below the counter-pressure beam, and the other end of the main beam is arranged above the overhanging part; S4: connecting a hanger between the other end of the main beam and the overhanging part; S5: disconnecting the connection between the hoisting equipment and the overhanging part, and pouring concrete in the joint between the overhanging part and the mounting part; and S6: after the concrete in the joint reaches the strength requirement, dismounting the hanger, and completing the construction of the overhanging part. The present application can hoist the overhanging part by using a counter-hoisting tool, so that the long-term occupation of the water hoisting equipment for hoisting can be avoided, and the overall construction efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of construction technology for water-based building structures, and in particular to a construction method for an outer cantilever platform of a water-based building. Background Technology

[0002] In typical building construction, cantilever beams are often installed along the outer edge of the building structure to form cantilever platforms, according to design requirements. These cantilever beams are usually precast reinforced concrete structures. Before constructing the cantilever beams, the main building structure is built first. Multiple reinforcing bars extending beyond the installation surface are pre-installed at the corresponding installation locations on the main building. Similarly, multiple reinforcing bars extending beyond the joint surface are also pre-embedded at the junction of the cantilever beam and the main building. During installation, the reinforcing bars on both sides are staggered and connected to form a joint section. Concrete is then poured into the joint section to connect the cantilever beam to the main building structure. For onshore buildings, cranes and other hoisting equipment are typically placed beside the main building structure during cantilever beam construction. After the pre-embedded reinforcing bars of the cantilever beam are positioned above the pre-embedded reinforcing bars of the main body, the cantilever beam is lowered from top to bottom, and the pre-embedded reinforcing bars of the cantilever beam are interlocked with the pre-embedded reinforcing bars of the main body. After it is moved into place, the formwork is erected and the joint is poured. For water-based construction, the cantilever beam is transported to the side of the building by barge, and then constructed using a barge crane. However, during the construction process, the barge crane needs to be used to lift the cantilever beam for a long time until the joint concrete has solidified and reached the required strength before the barge can be removed. In other words, the barge needs to be occupied for a long time during the entire construction operation of the cantilever beam, thereby reducing the efficiency of barge use. Especially when construction conditions are limited, the barge also needs to undertake other work tasks, which will also affect the overall construction schedule. Summary of the Invention

[0003] The purpose of this invention is to overcome the technical problems of existing technologies that require long-term occupation of barges in the construction of cantilevered structures on water, affecting the overall construction progress and reducing construction efficiency, and to provide a construction method for the outer edge cantilever platform of a structure on water.

[0004] In a first aspect, the present invention provides a construction method for an outer cantilever platform of a floating structure, comprising:

[0005] S1: Use hoisting equipment to lift the cantilevered part into place, so that the mating surface of the cantilevered part is opposite to the mounting surface of the installation part; S2: Anchor piles and support piles are spaced apart on the mounting part, and a counter-pressure beam is installed on the anchor piles so that the anchor piles point toward the support piles toward the cantilever part; S3: A main beam is installed on top of the support pile, with one end of the main beam positioned below the counter-pressure beam and the other end positioned above the cantilever section; S4: Connect a lifting component between the other end of the main beam and the cantilever section; S5: Disconnect the connection between the hoisting equipment and the cantilever section, and pour concrete into the joint between the cantilever section and the installation section; S6: After the concrete in the joint reaches the required strength, disassemble the lifting component to complete the construction of the cantilever section.

[0006] After the cantilever section is hoisted into place using a water-based lifting device (such as a barge crane), a temporary hoisting fixture for reverse hoisting the cantilever section can be installed on the installation section. Anchor piles and counter-pressure beams serve as reaction mechanisms, support piles as fulcrums, and the main beam as a lever. Utilizing the lever principle, one end of the main beam suspended above the cantilever section is connected to the cantilever section via a lifting device. At this point, the tension exerted on the cantilever section by the water-based lifting device can be released, completing the first force conversion. The tension on the cantilever section is transferred from the lifting device to the reverse hoisting fixture, allowing the water-based lifting device to leave the cantilever section and perform other construction operations. This avoids the need to occupy the water-based lifting device for extended periods to hoist the cantilever section under equipment constraints, thus preventing a decrease in overall construction efficiency. After the cantilever section is held in place by the reverse hoisting fixture, its hoisted state can be maintained until the joint concrete is poured and reaches the required strength. Then, the reverse hoisting fixture can be disassembled, and the weight of the cantilever section is borne by the joint, completing the second force conversion and thus finishing the cantilever section construction.

[0007] Preferably, in step S1, the method further includes: moving the cantilever portion so that a plurality of first reinforcing bars on the mating surface overlap with a plurality of second reinforcing bars on the mounting surface, and fixing the first reinforcing bars and the second reinforcing bars together.

[0008] Preferably, in S1, the method for hoisting the cantilevered portion into place includes: S11: Move the cantilever portion above the installation position so that the first reinforcing bar is above the second reinforcing bar; S12: Lower the cantilevered part, and lower the first steel bar into the gap between the second steel bars, so that the cantilevered part moves to the installation position.

[0009] Preferably, in S1, the method for hoisting the cantilevered portion into place includes: C11: Move the cantilevered part to a side of the installation position away from the installation part, so that the first steel bar and the corresponding second steel bar are on the same horizontal plane and spaced apart from each other; C12: Horizontally move the cantilever part so that the first reinforcing bar is inserted laterally into the gap between the second reinforcing bars, thereby moving the cantilever part to the installation position.

[0010] Preferably, in S3, several main beams are arranged on the top of the support piles. Each main beam corresponds to two anchor piles and two counterweight beams. The two counterweight beams are horizontally connected between the two anchor piles. The two counterweight beams are arranged vertically at intervals. The main beams pass through the two counterweight beams.

[0011] Preferably, in step S3, the method further includes: erecting a suspension beam between two adjacent main beams, such that the suspension beam is located above the cantilevered portion; in step S4, the upper end of the suspension member is connected to the suspension beam, and the lower end of the suspension member is connected to the cantilevered portion.

[0012] Preferably, in S3, two suspension beams are erected between two adjacent main beams, and an installation joint is formed between the two suspension beams. A fixing member is provided at the top of the two suspension beams, the fixing member spans the installation joint, and the upper end of the suspension member passes through the installation joint and is connected to the fixing member.

[0013] Preferably, in step S5, the method for pouring the concrete includes: S51: A template is erected at the bottom of the joint, so that the template is connected between the cantilever and the mounting part and covers the joint; S52: Pour concrete from above the joint downwards until the joint is filled; S53: After the concrete has been cured and formed, the formwork is removed.

[0014] Preferably, in step S51, the step of setting up the template includes: S511: Secure the template to the bottom of the joint using temporary supports; S512: A plurality of tie rods are provided from above the joint along the mating surface and the mounting surface, such that the lower end of the tie rods passes through the reserved hole on the template; S513: Install a nut at the lower end of the tie rod passing through the reserved hole to fix the tie rod to the template; bend the upper end of the tie rod so that the tie rod is hung on the cantilever part or the mounting part; S514: Remove the temporary support.

[0015] Preferably, in step S2, the step of installing the anchor pile includes: S21: Insert the lower end of the anchor pile into the gap of the third reinforcing bar in the uncast area of ​​the installation part; S22: Weld anchor bars to the lower end of the anchor pile so that the anchor bars can abut against the bottom of the third reinforcing bar.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a construction method for an outer cantilever platform of a floating structure. After the cantilever beam is hoisted into place using a floating lifting device (such as a barge crane), temporary fixtures for reverse hoisting of the cantilever beam can be installed on the installation section. Anchor piles and counter-pressure beams serve as reaction mechanisms, support piles as fulcrums, and the main beam as a lever. Utilizing the lever principle, one end of the main beam suspended above the cantilever beam is connected to the cantilever beam via a lifting device. At this point, the tension applied to the cantilever beam by the floating lifting device can be released, thus completing the first force conversion and allowing the cantilever beam to be lifted. The tension on the cantilever beam is transferred from the hoisting equipment to the inverted hoisting fixture. The water-based hoisting equipment can then leave the cantilever beam to carry out other construction work. This avoids the need to occupy the water-based hoisting equipment for a long time to hoist the cantilever beam under equipment constraints, which would reduce the overall construction efficiency. After the cantilever beam is hoisted by the inverted hoisting fixture, the cantilever beam can be kept in the hoisted state until the joint concrete is poured and reaches the required strength. Then the inverted hoisting fixture can be disassembled. At this time, the weight of the cantilever beam is borne by the joint, which completes the second force conversion and thus completes the cantilever beam construction. Attached Figure Description

[0017] Figure 1 This is a construction diagram of the cantilever section of the present invention.

[0018] Figure 2 This is a schematic diagram showing the location of the seam.

[0019] Figure 3 This is a schematic diagram showing the connection between the bottom of the anchor pile and the third reinforcing bar.

[0020] Figure 4 for Figure 1 Diagram of direction A in the middle.

[0021] Figure 5 This is a top view of the cantilevered part and the reverse lifting fixture of the present invention.

[0022] Figure 6 This is a schematic diagram of the first installation direction of the cantilever part of the present invention.

[0023] Figure 7 This is a schematic diagram of a second installation direction for the cantilever portion of the present invention.

[0024] Figure 8 This is a schematic diagram of the template of the present invention being fixed by temporary supports (the first and second reinforcing bars are hidden).

[0025] Figure 9 This is a schematic diagram of the template of the present invention being fixed by tie rods (the first and second reinforcing bars are hidden).

[0026] Marked in the image: 1. Cantilever section; 11. Butt joint surface; 12. First reinforcing bar; 2. Installation section; 21. Installation surface; 22. Second reinforcing bar; 3. Anchor pile; 4. Support pile; 5. Counterweight beam; 6. Main beam; 7. Lifting component; 8. Joint; 9. Lifting beam; 10. Installation joint; 13. Fixing component; 14. Formwork; 15. Tie rod; 16. Anchor bar; 17. Third reinforcing bar; 18. Temporary support; 19. Pipe pile platform. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0028] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of the present invention is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0029] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but that it can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0030] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0031] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as 2, 3, 4, 5, 6, 7, 8, or 9, and can even exceed nine.

[0032] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0033] Example This embodiment provides a construction method for an outer cantilever platform of a structure on water.

[0034] like Figures 1 to 9 As shown, the present invention provides a construction method for an outer cantilever platform of a floating structure, comprising: S1: Use hoisting equipment to hoist the cantilever 1 into place, so that the mating surface 11 of the cantilever 1 is positioned opposite to the mounting surface 21 of the mounting part 2; S2: Anchor piles 3 and support piles 4 are set at intervals on the installation part 2, and counter-pressure beams 5 are set on the anchor piles 3 so that the anchor piles 3 point towards the support piles 4 and are directed toward the cantilever part 1. S3: Set a main beam 6 on top of the support pile 4, so that one end of the main beam 6 is placed below the counter-pressure beam 5 and the other end of the main beam 6 is placed above the cantilever 1. S4: Connect the hanger 7 between the other end of the main beam 6 and the cantilever 1; S5: Disconnect the connection between the hoisting equipment and the cantilever 1, and pour concrete into the joint 8 between the cantilever 1 and the installation part 2; S6: After the concrete in joint 8 reaches the required strength, disassemble the lifting component 7 to complete the construction of the cantilever section 1.

[0035] After the cantilever section 1 is hoisted into place using a water-based hoisting device (such as a barge crane), temporary fixtures for reverse hoisting of the cantilever section 1 can be installed on the installation section 2. Anchor piles 3 and counter-pressure beams 5 serve as reaction mechanisms, support piles 4 as fulcrums, and the main beam 6 as a lever. Utilizing the lever principle, one end of the main beam 6, suspended above the cantilever section 1, is connected to the cantilever section 1 via a hoisting component 7. At this point, the tension applied to the cantilever section 1 by the water-based hoisting device can be released, thus completing the first force conversion, transferring the tension on the cantilever section 1 from the hoisting device... Once the equipment is converted into a reverse hoisting fixture, the water-based hoisting equipment can leave the cantilever section 1 to carry out other construction operations. This avoids the need to occupy the water-based hoisting equipment for a long time to hoist the cantilever section 1 under equipment constraints, which would reduce the overall construction efficiency. After the cantilever section 1 is hoisted by the reverse hoisting fixture, the cantilever section 1 can be kept in the hoisted state until the concrete of the joint 8 is poured and reaches the required strength. Then the reverse hoisting fixture can be disassembled. At this time, the weight of the cantilever section 1 is borne by the joint 8, which completes the second force conversion and thus completes the construction of the cantilever section 1.

[0036] In this embodiment, step S1 further includes: moving the cantilever part 1 so that multiple first steel bars 12 on the docking surface 11 overlap with multiple second steel bars 22 on the mounting surface 21, and fixing the first steel bars 12 and the second steel bars 22 together; specifically, the cantilever part 1 can be hoisted to the installation position using hoisting equipment (such as a barge crane) so that the first steel bars 12 and the second steel bars 22 overlap each other to keep the cantilever part 1 stable, and fixing the first steel bars 12 and the second steel bars 22 together by welding or binding.

[0037] Alternatively, in step S1 above, the method of hoisting the cantilevered part 1 into position can be the first method, such as... Figure 6 As shown, it includes: S11: Move the cantilever 1 above the installation position so that the first reinforcing bar 12 is above the second reinforcing bar 22; S12: Lower the cantilever part 1, lower the first steel bar 12 into the gap between the second steel bars 22, so that the cantilever part 1 moves to the installation position.

[0038] That is, the cantilever part 1 is placed from top to bottom to the installation position using hoisting equipment. During on-site construction, since the first steel bar 12 on the docking surface 11 and the second steel bar 22 on the installation surface 21 are relatively densely arranged, it is necessary to accurately control the hoisting position. If necessary, construction personnel need to use tools to adjust the direction of the steel bars, such as bending or straightening the steel bars, to avoid interference when the steel bars on both sides intersect.

[0039] Alternatively, in step S1 above, the method of hoisting the cantilevered part 1 into position can be a second method, such as... Figure 7 As shown, it includes: C11: Move the cantilever 1 to the side of the installation position away from the installation part 2, so that the first reinforcing bar 12 and the corresponding second reinforcing bar 22 are on the same horizontal plane and spaced apart from each other; C12: Horizontally move the cantilever part 1 so that the first reinforcing bar 12 is inserted laterally into the gap between the second reinforcing bars 22, so that the cantilever part 1 is moved to the installation position.

[0040] The cantilever section 1 is first hoisted to the same height as the installation section 2 using hoisting equipment, maintaining a certain distance from the installation section 2. Then, the cantilever section 1 is moved horizontally from far to near the installation section 2 to achieve a transverse staggered connection of the reinforcing bars on both sides. In other words, the first reinforcing bar 12 is inserted transversely into the gap between the second reinforcing bars 22, or the second reinforcing bar 22 is inserted transversely into the gap between the first reinforcing bars 12, forming an interlacing and lapped connection. Compared to lapping from top to bottom, the transverse insertion method is easier to achieve. In the case of slight interference between the reinforcing bars on both sides, the lapped connection can also be completed through adaptive adjustment.

[0041] In step C12 above, the horizontal movement of the cantilever 1 can be performed by hoisting equipment (such as barge cranes) after the cantilever 1 is hoisted, or the reverse hoisting fixture can be installed first, and the cantilever 1 can be hoisted by the main beam 6. Then the tail end of the main beam 6 is connected to the drive equipment such as the winch on the installation part 2, and then a backward pulling force is applied to the main beam 6 to pull the main beam 6 to move on the support pile 4, thereby realizing the horizontal movement of the cantilever 1 toward the installation part 2.

[0042] In this embodiment, in step S3 above, multiple main beams 6 are arranged on the top of the support pile 4. Each main beam 6 corresponds to two anchor piles 3 and two counterweight beams 5. The two counterweight beams 5 are horizontally connected between the two anchor piles 3. The two counterweight beams 5 are arranged vertically at intervals, and the main beam 6 passes through the two counterweight beams 5.

[0043] For a cantilever section 1 with a large transverse area, using a single main beam 6 would cause uneven stress distribution on the cantilever section 1, making it prone to deformation. Therefore, using multiple main beams 6 to share the weight of the cantilever section 1 can maintain the stability of the shape of the cantilever section 1 to a certain extent and reduce the deformation of the cantilever section 1. The two anchor piles 3 and the two counter-pressure beams 5 can be combined to form a gate-like structure. The main beam 6 can pass through the space enclosed by the two anchor piles 3 and the two counter-pressure beams 5, and the two counter-pressure beams 5 can limit the upper and lower positions of the main beam 6.

[0044] In this embodiment, step S3 further includes: erecting a suspension beam 9 between two adjacent main beams 6, so that the suspension beam 9 is located above the cantilever part 1; in S4, the upper end of the suspension member 7 is connected to the suspension beam 9, and the lower end of the suspension member 7 is connected to the cantilever part 1.

[0045] The anchor piles 3, counter-pressure beams 5, support piles 4, main beams 6 and hanging beams 9 mentioned above can all adopt I-beam structures. The hanging components 7 can be U-shaped steel bars, etc. The top of the cantilever section 1 has pre-embedded structures such as lifting rings to form a lifting point. The U-shaped steel bars can pass through the lifting rings on the cantilever section 1 for connection. The upper end of the U-shaped steel bars is then connected to the hanging beam 9 by bolts or other means, thereby completing the hanging connection between the hanging beam 9 and the cantilever section 1.

[0046] In this embodiment, in step S3 above, two suspension beams 9 are erected between two adjacent main beams 6, and an installation joint 10 is formed between the two suspension beams 9. A fixing member 13 is provided at the top of the two suspension beams 9, and the fixing member 13 spans the installation joint 10. The upper end of the suspension member 7 passes through the installation joint 10 and is connected to the fixing member 13.

[0047] When the fastener 13 is subjected to the tension of the lower hanger 7, it can be pressed against the top of the hanger beam 9. Therefore, no additional connection means are needed between the fastener 13 and the hanger beam 9. The fastener 13 can be placed on the top of the hanger beam 9, that is, it is erected between the two hanger beams 9. The hanger beam 9 can also be placed directly on the main beam 6, that is, it is erected between the two main beams 6. No additional connection means are needed between the hanger beam 9 and the main beam 6. After the joint 8 is poured, the hanger 7, the fastener 13 and the hanger beam 9 are more convenient to disassemble.

[0048] In this embodiment, the method for pouring concrete in step S5 above includes: S51: A template 14 is installed at the bottom of the joint 8, so that the template 14 is connected between the cantilever part 1 and the mounting part 2 and covers the joint 8. S52: Pour concrete from above joint 8 downwards until joint 8 is filled; S53: After the concrete has been cured and set, the formwork is removed 14.

[0049] Alternatively, in step S51 above, the step of setting up the template 14 includes: S511: Fix the template 14 to the bottom of the joint 8 using temporary support 18; S512: Multiple tie rods 15 are installed from above the joint 8 along the mating surface 11 and the mounting surface 21, so that the lower end of the tie rods 15 passes through the reserved hole on the template 14. S513: Install a nut at the lower end of the tie rod 15 that passes through the reserved hole to fix the tie rod 15 to the template 14; bend the upper end of the tie rod 15 so that the tie rod 15 is hung on the cantilever part 1 or the mounting part 2; S514: Remove temporary support 18.

[0050] like Figure 8 and Figure 9As shown, tie rods 15 are installed on both the side near the installation part 2 and the side near the cantilever part 1, and multiple tie rods 15 are arranged along the length of the joint 8. The strength of each tie rod 15 and the quantity and density of the multiple tie rods 15 must be ensured so that the formwork 14 can withstand the weight of the poured concrete. Multiple formwork panels 14 are spliced ​​together along the length of the joint 8 to cover the bottom of the joint 8. Each formwork panel 14 can be installed separately. The temporary support 18 can be a steel frame structure or a scissor-type lifting structure. The scissor-type structure can vertically extend and retract to adjust the height, thereby lifting the formwork 14 upwards until it abuts against the bottom of the cantilever part 1 and the installation part 2, thus covering the joint. For the 8-cover, temporary support 18 can be placed on the pipe pile platform 19 below the joint 8. The pipe pile platform 19 may be underwater during high tide, but this does not affect the placement of temporary support 18 on the pipe pile platform 19. However, if temporary support 18 is placed underwater for a long time to support the formwork 14 during the entire joint pouring period, it may be affected by wave impact, which may affect the stability of temporary support 18. Therefore, tie rods 15 still need to be installed on the formwork 14 to fix the formwork 14. After the tie rods 15 are installed, the temporary support 18 can be removed in time. After the joint 8 is poured, the vertical part of the tie rod 15 will be embedded in the concrete, and the bent part of the upper part of the tie rod 15 can be disassembled by cutting.

[0051] In this embodiment, step S2, installing the anchor pile 3, includes: S21: Insert the lower end of the anchor pile 3 into the gap of the third reinforcing bar 17 in the uncast area of ​​the installation part 2; S22: Weld anchor bars 16 to the lower end of anchor pile 3 so that anchor bars 16 can abut against the bottom of the third reinforcing bar 17.

[0052] An anchor bar 16 is installed at the lower end of the anchor pile 3. The anchor bar 16 and the third steel bar 17 can be used to abut against each other to achieve the functions of resisting pull-out and limiting the anchor pile 3.

[0053] In summary, this invention provides a construction method for an outer cantilever platform of a floating structure. After the cantilever beam is hoisted into place using a floating lifting device (such as a barge crane), temporary fixtures for reverse hoisting of the cantilever beam can be installed on the installation section. Anchor piles and counter-pressure beams serve as reaction mechanisms, support piles as fulcrums, and the main beam as a lever. Utilizing the lever principle, one end of the main beam suspended above the cantilever beam is connected to the cantilever beam via a lifting device. At this point, the tension applied to the cantilever beam by the floating lifting device can be released, thus completing the first force conversion. By converting the tension on the cantilever beam from the hoisting equipment to the inverted hoisting fixture, the water-based hoisting equipment can be removed from the cantilever beam to carry out other construction operations. This avoids the need to occupy the water-based hoisting equipment for a long time to hoist the cantilever beam under equipment constraints, which would reduce the overall construction efficiency. After the cantilever beam is hoisted by the inverted hoisting fixture, the cantilever beam can be kept in the hoisted state until the joint concrete is poured and reaches the required strength. Then the inverted hoisting fixture can be disassembled, and the weight of the cantilever beam is borne by the joint, thus completing the second force conversion and completing the cantilever beam construction.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for an outer cantilever platform of a water structure, characterized in that, include: S1: Use hoisting equipment to hoist the cantilever part (1) into place, so that the docking surface (11) of the cantilever part (1) is opposite to the mounting surface (21) of the mounting part (2); S2: Anchor piles (3) and support piles (4) are spaced apart on the installation part (2), and a counter-pressure beam (5) is provided on the anchor piles (3) so that the anchor piles (3) point toward the support piles (4) toward the cantilever part (1); S3: A main beam (6) is set on the top of the support pile (4), with one end of the main beam (6) placed below the counter-pressure beam (5) and the other end of the main beam (6) placed above the cantilever (1); S4: Connect the hanger (7) between the other end of the main beam (6) and the cantilever (1); S5: Disconnect the connection between the hoisting equipment and the cantilever (1), and pour concrete in the joint (8) between the cantilever (1) and the installation part (2); S6: After the concrete in the joint (8) reaches the required strength, the lifting component (7) is disassembled to complete the construction of the cantilever (1).

2. The construction method for the cantilevered platform of the water structure according to claim 1, characterized in that, S1 further includes: moving the cantilever part (1) so that a plurality of first steel bars (12) on the docking surface (11) overlap with a plurality of second steel bars (22) on the mounting surface (21), and fixing the first steel bars (12) and the second steel bars (22) together.

3. The construction method for the cantilevered platform of the water structure according to claim 2, characterized in that, In S1, the method for hoisting the cantilevered part (1) into place includes: S11: Move the cantilever (1) above the installation position so that the first reinforcing bar (12) is above the second reinforcing bar (22); S12: Lower the cantilever part (1) and lower the first steel bar (12) into the gap between the second steel bars (22) so that the cantilever part (1) moves to the installation position.

4. The construction method for the cantilevered platform of the water structure according to claim 2, characterized in that, In S1, the method for hoisting the cantilevered part (1) into place includes: C11: Move the cantilever (1) to the side of the installation position away from the installation part (2), so that the first steel bar (12) and the corresponding second steel bar (22) are on the same horizontal plane and spaced apart from each other; C12: Horizontally move the cantilever part (1) so that the first steel bar (12) is inserted laterally into the gap between the second steel bars (22), so that the cantilever part (1) is moved to the installation position.

5. The construction method for the cantilevered platform of the water structure according to claim 1, characterized in that, In S3, several main beams (6) are arranged on the top of the support pile (4). Each main beam (6) corresponds to two anchor piles (3) and two counterweight beams (5). The two counterweight beams (5) are horizontally connected between the two anchor piles (3). The two counterweight beams (5) are arranged vertically at intervals. The main beam (6) passes through the two counterweight beams (5).

6. The construction method for the cantilevered platform of the water structure according to claim 5, characterized in that, S3 further includes: erecting a suspension beam (9) between two adjacent main beams (6) so that the suspension beam (9) is located above the cantilever part (1); S4, the upper end of the suspension member (7) is connected to the suspension beam (9), and the lower end of the suspension member (7) is connected to the cantilever part (1).

7. The construction method for the cantilevered platform of the outer edge of a water structure according to claim 6, characterized in that, In S3, two hanging beams (9) are erected between two adjacent main beams (6), and an installation joint (10) is formed between the two hanging beams (9). A fastener (13) is provided at the top of the two hanging beams (9), and the fastener (13) spans the installation joint (10). The upper end of the hanging member (7) passes through the installation joint (10) and is connected to the fastener (13).

8. The construction method for the cantilevered platform of the water structure according to claim 1, characterized in that, In S5, the method for pouring the concrete includes: S51: A template (14) is erected at the bottom of the joint (8) so that the template (14) is connected between the cantilever (1) and the mounting part (2) and covers the joint (8). S52: Pour concrete downwards from above the joint (8) until the joint (8) is filled; S53: After the concrete has been cured and formed, the formwork (14) is removed.

9. The construction method for the cantilevered platform of the outer edge of a water structure according to claim 8, characterized in that, In S51, the step of setting up the template (14) includes: S511: Secure the template (14) to the bottom of the joint (8) using temporary supports; S512: A plurality of tie rods (15) are provided from above the joint (8) along the mating surface (11) and the mounting surface (21), such that the lower end of the tie rods (15) passes through the reserved hole on the template (14); S513: Install a nut at the lower end of the pull rod (15) that passes through the reserved hole to fix the pull rod (15) to the template (14); bend the upper end of the pull rod (15) so that the pull rod (15) is hung on the cantilever part (1) or the mounting part (2); S514: Remove the temporary support.

10. The construction method of the cantilever platform at the outer edge of a water structure according to any one of claims 1 to 9, characterized in that, In S2, the steps for installing the anchor pile (3) include: S21: Insert the lower end of the anchor pile (3) into the gap of the third reinforcing bar (17) in the uncast area of ​​the installation part (2); S22: Weld anchor bars (16) to the lower end of the anchor pile (3) so that the anchor bars (16) can abut against the bottom of the third reinforcing bar (17).

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