Bottom formwork device, pouring system and disassembly method for cast-in-place beam structure on high-pile wharf

Abstract

The present invention relates to the technical field of high-pile wharf construction, and in particular to a bottom formwork device, a casting system, and a disassembly method for a cast-in-place beam structure on a high-pile wharf. The hoisting structure includes a lower crossbeam, a support leg, and a hanger assembly, wherein the support leg supports the lower crossbeam; a jacking device is supported between the upper crossbeam and the lower crossbeam, a first fixing nut and a first supporting nut can clamp the upper crossbeam, the lower crossbeam supports the second fixing nut, and a vertical hanger is connected to the bottom formwork in a vertical limit manner. The bottom formwork device for the cast-in-place beam structure on the high-pile wharf of the present application, the entire process is completed by the operator screwing the first fixing nut, the first supporting nut, and the second fixing nut, and coordinating the lifting of the jacking device to complete the lowering of the bottom formwork. The entire bottom formwork device can make the bottom formwork disassembly process not require the assistance of a large crane, the hanger assembly has a simple structure, low cost, and is suitable for batch arrangement on high-pile wharves. Compared with large cranes, it is less expensive and more cost-effective.

Description

Technical Field

[0001] The invention relates to the technical field of high-pile wharf construction, and in particular to a bottom formwork device, a casting system and a disassembly method for a cast-in-situ beam structure on an upper portion of a high-pile wharf. Background Art

[0002] When constructing the upper beam structure of the steel pipe piles of a high-pile wharf, it is sometimes necessary to cast it in situ, which is called a cast-in-situ beam structure in this field. When performing the cast-in-situ construction of the cast-in-situ beam structure, it is necessary to set up a bottom formwork at the bottom of the cast-in-situ beam structure. Specifically, a corbel is set on the upper part of the steel pipe pile to support the bottom formwork. After the casting construction of the cast-in-situ beam structure is completed, the corbel needs to be removed, and then the bottom formwork is lowered to a floating raft on the water surface for decomposition of the bottom formwork. The decomposed parts are then transported out of the steel pipe pile area for recycling. The above process currently generally requires the assistance of a crane, that is, after the casting construction of the cast-in-situ beam structure is completed, the bottom formwork is first lifted by a crane, and then the corbel is removed. After that, the bottom formwork is lowered to a floating raft by a crane, and then the bottom formwork is decomposed. However, the cost of on-site cranes is very expensive, and there are often dozens or even hundreds of bottom formworks, and cranes cannot be arranged in batches, resulting in a time-consuming and costly bottom formwork disassembly process. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the background technology in which a crane is used to lower the bottom formwork onto a floating raft and then the bottom formwork is disassembled, and the bottom formwork disassembly process is time-consuming and costly. The present invention provides a bottom formwork device, a casting system and a disassembly method for the cast-in-place beam structure on the upper part of a high-pile wharf.

[0004] In a first aspect, the present invention provides a bottom formwork device for a cast-in-situ beam structure on a high-pile wharf, comprising a bottom formwork and a hoisting structure connected to both ends of the bottom formwork in a length direction, wherein the hoisting structure comprises a lower crossbeam, a support leg, and at least two hanger assemblies spaced apart in a width direction of the bottom formwork, wherein the lower crossbeam is arranged in the width direction of the bottom formwork; the support leg supports the lower crossbeam; the hanger assembly comprises an upper crossbeam and at least two vertical hangers spaced apart in a transverse direction, wherein the upper crossbeam is located above the lower crossbeam, the vertical hangers pass through the upper crossbeam and the lower crossbeam, a jacking device is supported between the upper crossbeam and the lower crossbeam, and the jacking device is located between the two vertical hangers. The vertical hanger is threadedly equipped with a first fixing nut, a first supporting nut and a second fixing nut in sequence from top to bottom. The first supporting nut is supported at the bottom of the upper crossbeam, and the first fixing nut is located at the top of the upper crossbeam. The first fixing nut and the first supporting nut can clamp the upper crossbeam from the upper and lower sides of the upper crossbeam. The second fixing nut is located at the top of the lower crossbeam, and the lower crossbeam can support the second fixing nut. The lower part of the vertical hanger is connected to the bottom mold, the upper crossbeam is located above the lower crossbeam, and the bottom mold is located below the lower crossbeam. The vertical hanger is connected to the bottom mold in a vertical limit connection.

[0005] The bottom formwork device of the cast-in-place beam structure on the upper part of the high-pile wharf described in the present application, when the bottom formwork is in use, the support legs support the lower crossbeam, and the lower crossbeam supports the second fixing nut. Since the second fixing nut is threadedly engaged with the vertical hanger, and the lower part of the vertical hanger is connected to the bottom formwork, the lower crossbeam achieves the purpose of stably setting the bottom formwork in the construction position by supporting the vertical hanger.

[0006] When the bottom mold needs to be disassembled, the jacking device is first adjusted to the extended state, but there is still a certain jacking space; then the first fixing nut and the first supporting nut are clamped to the upper and lower sides of the upper beam; then the jacking device is lifted to make the upper beam rise a first distance H1, and the lower beam is separated from the second fixing nut, and there is no longer force between the two, so that the operator can tighten the second fixing nut with an ordinary wrench; turn the second fixing nut and make the second fixing nut rise a second distance H2 along the vertical boom, and the second distance H2 is greater than the first distance H1; then the jacking device is lifted The position falls back until the lower crossbeam supports the second fixing nut again. At this time, since the vertical hanger is connected to the vertical limit connection of the bottom mold, the vertical hanger drives the bottom mold to fall; the above process is repeated until the bottom mold falls to the target height. The entire process is completed by the operator screwing the first fixing nut, the first support nut and the second fixing nut, and coordinating the lifting of the jacking device to complete the falling of the bottom mold. The entire bottom mold device can make the bottom mold disassembly process do not require the assistance of a large crane. The hanger assembly has a simple structure and low cost, and is suitable for batch arrangement on high-pile docks. Compared with large cranes, it has lower cost and is more cost-effective.

[0007] Moreover, since the lifting structure can form a stable suspension support for the bottom mold, the work of disassembling the bottom mold does not need to be performed on the floating raft. Compared with the working condition where the floating raft floats with the water, the lifting structure of the present application can form a stable suspension support for the bottom mold, which makes it safer for the operator to disassemble the bottom mold.

[0008] Preferably, the jacking device is connected to the upper crossbeam.

[0009] Since there is an adhesive force between the bottom formwork and the upper cast-in-place beam structure, it is connected to the upper crossbeam through a jacking device, and the vertical hanger is connected to the vertical limit of the bottom formwork. When the jacking device falls back, it can drive the bottom formwork to separate from the upper cast-in-place beam structure, thereby reducing the difficulty for the operator to separate the bottom formwork from the upper cast-in-place beam structure.

[0010] Preferably, adjacent upper crossbeams are spaced apart, which greatly reduces the requirements for synchronous lifting and synchronous extension between the lifting devices, and effectively reduces the cost of the lifting devices.

[0011] Preferably, there are at least two support legs located on the same side of the bottom mold, one end of the support leg is tilted to pass through the gap between the two vertical hangers of the same hanger assembly, and forms a limit for the hanger assembly along the length direction of the bottom mold, and the end of the support leg away from the hanger assembly is tilted toward the inside of the bottom mold. The above-mentioned limit is very flexible, so that no other limiting structure is required between the support leg and the vertical hanger to achieve the limitation of both along the length direction of the bottom mold.

[0012] Preferably, the bottom formwork includes a template and a beam structure for supporting the template, and the beam structure is vertically limitedly connected to the vertical hanger.

[0013] Preferably, the hanger assembly includes a bottom cross beam, a third fixing nut and a pressure plate. A support portion is provided at the bottom of the vertical hanger, and the support portion supports the bottom cross beam. The corresponding end of the beam structure passes through the gap between the two vertical hangers of the same hanger assembly and is supported on the bottom cross beam. The third fixing nut is threadedly engaged with the vertical hanger, and the third fixing nut can abut against the pressure plate, so that the pressure plate and the bottom cross beam form a vertical limit for the beam structure.

[0014] In a second aspect, the present invention provides a casting system, comprising a cast-in-place beam structure and a bottom formwork device for the cast-in-place beam structure on the upper portion of a high-pile wharf as described in the present application, wherein the support legs are connected to the cast-in-place beam structure.

[0015] Preferably, the supporting legs are coordinated with the cast-in-place beam structure in a transverse swinging manner.

[0016] In a third aspect, a disassembly method for disassembling the bottom formwork device for the cast-in-situ beam structure on the upper portion of a high-pile wharf as described in the present application comprises the following steps:

[0017] A1. Rotate the first fixing nut and raise the first fixing nut along the vertical boom for a distance;

[0018] A2. Lift the lifting device onto the beam for a certain distance;

[0019] A3. Clamp the upper beam by clamping the first fixing nut and the first support nut from the upper and lower sides of the upper beam;

[0020] A4. Continue to lift the lifting device to disengage the lower beam from the second fixing nut. The vertical spacing between the lower beam and the second fixing nut is the first distance H1.

[0021] A5. Rotate the second fixing nut and raise the second fixing nut along the vertical boom by a second distance H2, where the second distance H2 is greater than the first distance H1;

[0022] A6. The lifting device is lowered, causing the vertical boom to drive the bottom mold downward until the lower crossbeam again supports the second fixing nut;

[0023] A7. Repeat A1-A6 until the bottom formwork falls to the target height and the bottom formwork is separated from the lifting structure.

[0024] The present application describes a disassembly method, which is that when the bottom form is in use, the support legs support the lower crossbeam, and the lower crossbeam supports the second fixing nut. Since the second fixing nut is threadedly engaged with the vertical hanger, and the lower part of the vertical hanger is connected to the bottom form, the lower crossbeam achieves the purpose of stably setting the bottom form in the construction position by supporting the vertical hanger.

[0025] When the bottom mold needs to be disassembled, the jacking device is first adjusted to the extended state, but there is still a certain jacking space; then the first fixing nut and the first supporting nut are clamped to the upper and lower sides of the upper beam; then the jacking device is lifted to make the upper beam rise a first distance H1, and the lower beam is separated from the second fixing nut, and there is no longer force between the two, so that the operator can tighten the second fixing nut with an ordinary wrench; turn the second fixing nut and make the second fixing nut rise a second distance H2 along the vertical boom, and the second distance H2 is greater than the first distance H1; then the jacking device is lifted The position falls back until the lower crossbeam supports the second fixing nut again. At this time, since the vertical hanger is connected to the vertical limit connection of the bottom mold, the vertical hanger drives the bottom mold to fall; the above process is repeated until the bottom mold falls to the target height. The entire process is completed by the operator screwing the first fixing nut, the first support nut and the second fixing nut, and coordinating the lifting of the jacking device to complete the falling of the bottom mold. The entire bottom mold device can make the bottom mold disassembly process do not require the assistance of a large crane. The hanger assembly has a simple structure and low cost, and is suitable for batch arrangement on high-pile docks. Compared with large cranes, it has lower cost and is more cost-effective.

[0026] Moreover, since the lifting structure can form a stable suspension support for the bottom mold, the work of disassembling the bottom mold does not need to be performed on the floating raft. Compared with the working condition where the floating raft floats with the water, the lifting structure of the present application can form a stable suspension support for the bottom mold, which makes it safer for the operator to disassemble the bottom mold.

[0027] Preferably, a steel pipe pile is provided at the lower part of the cast-in-place beam structure, and a corbel is detachably connected to the steel pipe pile, and the corbel is used to support the bottom form. When the bottom form includes a template and a beam structure for supporting the template:

[0028] Preferably, before A1, the method further includes the step of disassembling the corbel: connecting the corbel to the beam structure, and then disassembling and separating the corbel from the steel pipe pile;

[0029] Preferably, in A7, when the bottom formwork falls to a height H from the floating row, it stops falling, then the formwork is disassembled, and the disassembled parts are placed on the floating row, and then the beam structure is continued to be lowered until the beam structure falls on the floating row, and the bottom formwork and the lifting structure are separated.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] The bottom formwork device of the cast-in-place beam structure on the upper part of the high-pile wharf described in the present application, when the bottom formwork is in use, the support legs support the lower crossbeam, and the lower crossbeam supports the second fixing nut. Since the second fixing nut is threadedly engaged with the vertical hanger, and the lower part of the vertical hanger is connected to the bottom formwork, the lower crossbeam achieves the purpose of stably setting the bottom formwork in the construction position by supporting the vertical hanger.

[0032] When the bottom mold needs to be disassembled, the jacking device is first adjusted to the extended state, but there is still a certain jacking space; then the first fixing nut and the first supporting nut are clamped to the upper and lower sides of the upper beam; then the jacking device is lifted to make the upper beam rise a first distance H1, and the lower beam is separated from the second fixing nut, and there is no longer force between the two, so that the operator can tighten the second fixing nut with an ordinary wrench; turn the second fixing nut and make the second fixing nut rise a second distance H2 along the vertical boom, and the second distance H2 is greater than the first distance H1; then the jacking device is lifted The position falls back until the lower crossbeam supports the second fixing nut again. At this time, since the vertical hanger is connected to the vertical limit connection of the bottom mold, the vertical hanger drives the bottom mold to fall; the above process is repeated until the bottom mold falls to the target height. The entire process is completed by the operator screwing the first fixing nut, the first support nut and the second fixing nut, and coordinating the lifting of the jacking device to complete the falling of the bottom mold. The entire bottom mold device can make the bottom mold disassembly process do not require the assistance of a large crane. The hanger assembly has a simple structure and low cost, and is suitable for batch arrangement on high-pile docks. Compared with large cranes, it has lower cost and is more cost-effective.

[0033] Moreover, since the lifting structure can form a stable suspension support for the bottom mold, the work of disassembling the bottom mold does not need to be performed on the floating raft. Compared with the working condition where the floating raft floats with the water, the lifting structure of the present application can form a stable suspension support for the bottom mold, which makes it safer for the operator to disassemble the bottom mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a three-dimensional schematic diagram of the bottom formwork device of the cast-in-situ beam structure on the upper part of the high-pile wharf of this application;

[0035] Figure 2 For this application Figure 1 Enlarged schematic diagram of part A in the middle.

[0036] Figure 3 For this application Figure 1 Enlarged schematic diagram of part B in the middle.

[0037] Figure 4 This is a schematic diagram of the main view of the bottom formwork device of the cast-in-situ beam structure on the upper part of the high-pile wharf of this application;

[0038] Figure 5 This is a top view schematic diagram of the bottom formwork device of the cast-in-place beam structure on the upper part of the high-pile wharf of this application (U-shaped component);

[0039] Figure 6 This is a top view schematic diagram of the bottom formwork device of the cast-in-situ beam structure on the upper part of the high-pile wharf of this application (connecting bolts);

[0040] Figure 7 This is a schematic diagram of the steps of clamping the upper beam with a first fixing nut and a first supporting nut from the upper and lower sides of the upper beam in a disassembly method of the present application.

[0041] Figure 8 For this application Figure 7 Enlarged schematic diagram of part C in the middle.

[0042] Figure 9 This is a schematic diagram of the steps of disengaging the lower crossbeam from the second fixing nut in a disassembly method of the present application.

[0043] Figure 10 For this application Figure 9 Enlarged schematic diagram of part D in the middle.

[0044] Figure 11 This is a schematic diagram of the steps of rotating the second fixing nut and raising the second fixing nut a second distance along the vertical boom in a disassembly method of the present application.

[0045] Figure 12 For this application Figure 11 Enlarged schematic diagram of part E in the middle.

[0046] Figure 13 A schematic diagram of the steps of lowering the lifting device in a disassembly method of the present application so that the lower crossbeam supports the second fixing nut again.

[0047] Figure 14 For this application Figure 13 Enlarged schematic diagram of part F in the middle.

[0048] Markings in the figure:

[0049] 1- bottom formwork; 2- hoisting structure; 3- upper beam; 4- lower beam; 5- support leg; 6- jacking device; 7- hanger assembly; 8- vertical hanger; 9- first support nut; 10- second fixing nut; 11- first fixing nut; 12- formwork; 13- beam structure; 14- cast-in-place beam structure; 15- bottom beam; 16- support part; 17- third fixing nut; 18- pressure plate; 19- U-shaped member, 20- connecting bolt. DETAILED DESCRIPTION

[0050] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments, as all technologies implemented based on the present invention fall within the scope of the present invention.

[0051] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating orientation or positional relationships such as "upper," "lower," "left," "right," "center," "inside," and "outside" are based on the orientation or positional relationships shown in the accompanying drawings, or are the orientation or positional relationships in which the invented product / device / apparatus is placed when it is conventionally used. These terms of orientation or positional relationships are merely for the purpose of facilitating the description of the present invention or simplifying the description of the specific embodiments to facilitate a quick understanding of the solutions by technicians. They 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.

[0052] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present invention.

[0053] In addition, the expressions "first", "second", "third", etc. that appear in the terms are merely descriptions used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0054] In addition, in the description of the embodiments of the present invention, "several," "plurality," and "a number" represent at least two. It can also be any number such as two, three, four, five, six, seven, eight, nine, or even more than nine.

[0055] Furthermore, in the description of the technical solution of the present invention, unless otherwise expressly specified, defined, or limited, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welded, riveted, bolted, threaded, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communicative; they may be direct, indirect via an intermediate medium, or internally connected between two components.

[0056] Example 1

[0057] like Figure 1-6 As shown, the bottom formwork device of the cast-in-situ beam structure on the upper part of the high-pile wharf described in this embodiment includes a bottom formwork 1 and a hoisting structure 2 connected to both ends of the bottom formwork 1 in the length direction, and the bottom formwork 1 can be lowered by the hoisting structure 2.

[0058] A preferred solution: the hoisting structure 2 includes a lower crossbeam 4, a support leg 5 and at least two hanger assemblies 7, and the at least two hanger assemblies 7 are arranged at intervals along the width direction of the bottom mold 1, and the lower crossbeam 4 is arranged along the width direction of the bottom mold 1; the support leg 5 supports the lower crossbeam 4; the hanger assembly 7 includes an upper crossbeam 3 and at least two vertical hangers 8 arranged at intervals in the transverse direction, the upper crossbeam 3 is located above the lower crossbeam 4, the vertical hangers 8 pass through the upper crossbeam 3 and the lower crossbeam 4, a jacking device 6 is supported between the upper crossbeam 3 and the lower crossbeam 4, the jacking device 6 is located between the two vertical hangers 8, and the vertical hangers 8 are threadedly matched with the first A fixing nut 11, a first supporting nut 9 and a second fixing nut 10, the first supporting nut 9 is supported at the bottom of the upper beam 3, the first fixing nut 11 is located at the top of the upper beam 3, and the first fixing nut 11 and the first supporting nut 9 can clamp the upper beam 3 from the upper and lower sides of the upper beam 3, the second fixing nut 10 is located at the top of the lower beam 4, and the lower beam 4 can support the second fixing nut 10, the lower part of the vertical hanger 8 is connected to the bottom mold 1, the upper beam 3 is located above the lower beam 4, and the bottom mold 1 is located below the lower beam 4, and the vertical hanger 8 is connected to the bottom mold 1 in a vertical limit connection.

[0059] A specific preferred embodiment of the lower cross beam 4 is that the lower cross beam 4 is formed by two channel steels back to back and welded together by a first plate. There is a gap between the two channel steels for the vertical hanger 8 to pass through, and first plates are provided on both sides of the vertical hanger 8.

[0060] In a specific preferred embodiment of the support legs 5 , the support legs 5 may be constructed of H-shaped steel, I-beam, box beam or rectangular tube.

[0061] A specific preferred embodiment of the upper cross beam 3 is that the upper cross beam 3 is formed by two channel steels back to back and welded together by a second plate. There is a gap between the two channel steels for the vertical hanger 8 to pass through, and a second plate is provided on both sides of the vertical hanger 8.

[0062] In another specific preferred embodiment of the upper cross beam 3 , the upper cross beam 3 is made of a box beam or a rectangular tube structure, and a through hole needs to be opened thereon for the vertical suspension rod 8 to pass through.

[0063] In a specific preferred embodiment, the lifting device 6 is preferably a jack.

[0064] In a particularly preferred embodiment, the vertical hanger rod 8 is preferably a steel rod with threads.

[0065] In a preferred embodiment, a pad is provided on the force-bearing side of the first support nut 9, the second fixing nut 10 and / or the first fixing nut 11. In a preferred embodiment, the jacking device 6 is connected to the upper crossbeam 3. Since there is an adhesive force between the bottom form 1 and its upper cast-in-place beam structure, it is connected to the upper crossbeam 3 through the jacking device 6, and the vertical hanger 8 is vertically limitedly connected to the bottom form 1. When the jacking device 6 falls back, it can drive the bottom form 1 to separate from the upper cast-in-place beam structure, thereby reducing the difficulty for the operator to separate the bottom form 1 from the upper cast-in-place beam structure.

[0066] In a preferred embodiment, adjacent upper crossbeams 3 are spaced apart, which greatly reduces the requirements for synchronous lifting and synchronous extension between the lifting devices 6 and effectively reduces the cost of the lifting devices 6.

[0067] In a preferred embodiment, there are at least two support legs 5 located on the same side of the bottom mold 1, one end of the support leg 5 is tilted to pass through the gap between the two vertical hangers 8 of the same hanger assembly 7, and forms a limit for the hanger assembly 7 along the length direction of the bottom mold 1, and the end of the support leg 5 away from the hanger assembly 7 is tilted toward the inner side of the bottom mold 1. The above-mentioned limit is very flexible, so that no other limiting structure is required between the support leg 5 and the vertical hanger 8 to achieve the limitation of both along the length direction of the bottom mold 1.

[0068] In a specific preferred embodiment, the two vertical booms 8 of the same boom assembly 7 form a first vertical plane, and an angle A is formed between the axial direction of the support leg 5 and the first vertical plane, where 0°>A>90°.

[0069] Preferably, the bottom form 1 includes a template 12 and a beam structure 13 for supporting the template 12 , and the beam structure 13 is vertically limitedly connected to the vertical suspension rod 8 .

[0070] In a specific preferred embodiment of the beam structure 13 , the beam structure 13 is formed by two channel steels back to back and welded together via a third plate, and the vertical hanger 8 is located outside the beam structure 13 .

[0071] In a specific preferred embodiment of the beam structure 13 , the legs 5 may be H-shaped steel, I-beam, box beam or rectangular tube structure.

[0072] A specific preferred embodiment of the formwork 12 includes a plate and a plurality of transverse ribs connecting the back of the plate. The front of the plate is relatively smooth and serves as a limiting surface for the cast-in-place beam structure 14. The transverse ribs support the plate and increase the stiffness of the plate. The beam structure 13 supports the plate through the transverse ribs.

[0073] In a preferred embodiment, the hanger assembly 7 includes a bottom cross beam 15, a third fixing nut 17 and a pressure plate 18. A support portion 16 is provided at the bottom of the vertical hanger 8. The support portion 16 supports the bottom cross beam 15. The end of the corresponding beam structure 13 passes through the gap between the two vertical hangers 8 of the same hanger assembly 7 and is supported on the bottom cross beam 15. The third fixing nut 17 is threadedly engaged with the vertical hanger 8. The third fixing nut 17 can abut against the pressure plate 18, so that the pressure plate 18 and the bottom cross beam 15 form a vertical limit for the beam structure 13.

[0074] In a specific preferred embodiment of the support portion 16 , the support portion 16 is a truncated cone structure with a diameter greater than that of the vertical suspension rod 8 , and is capable of supporting the bottom cross beam 15 .

[0075] A specific preferred embodiment of the bottom cross beam 15 is that the bottom cross beam 15 is formed by two channel steels back to back and welded together by a fourth plate. There is a gap between the two channel steels for the vertical hanger 8 to pass through, and a fourth plate is provided on both sides of the vertical hanger 8.

[0076] In a specific preferred embodiment of the bottom cross beam 15 , the support legs 5 may be channel steel, box beam or rectangular tube structure. In this case, a through hole needs to be opened on the channel steel, box beam or rectangular tube structure to allow the vertical hanger 8 to pass through.

[0077] In the bottom formwork device of the cast-in-situ beam structure on the upper part of the high-pile wharf described in this embodiment, when the bottom formwork 1 is in use, the support legs 5 support the lower crossbeam 4, and the lower crossbeam 4 supports the second fixing nut 10. Since the second fixing nut 10 is threadedly engaged with the vertical hanger 8, and the lower part of the vertical hanger 8 is connected to the bottom formwork 1, the lower crossbeam 4 supports the vertical hanger 8 to achieve the purpose of stably setting the bottom formwork 1 in the construction position.

[0078] When the bottom mold 1 needs to be disassembled, the jacking device 6 is first adjusted to the extended state, but there is still a certain jacking space; then the first fixing nut 11 and the first supporting nut 9 are clamped on the upper and lower sides of the upper beam 3; then the jacking device 6 is lifted to make the upper beam 3 rise a first distance H1 [the first time is generally 1-2 mm, at this time, the displacement space of 1-2 mm is provided by the structural deformation of the bottom mold 1 or the axial structural deformation of the vertical hanger 8], the lower beam 4 is separated from the second fixing nut 10, and the two are no longer subjected to mutual force, so that the operator can tighten the second fixing nut 10 with an ordinary wrench; turn the second fixing nut 10, and make the second fixing nut 10 rise along the vertical hanger 8 by a second distance Distance H2, the second distance H2 is greater than the first distance H1; then the jacking device 6 falls back until the lower crossbeam 4 supports the second fixing nut 10 again. At this time, since the vertical boom 8 is vertically limitedly connected to the bottom mold 1, the vertical boom 8 drives the bottom mold 1 to fall; then the above process is repeated until the bottom mold 1 falls to the target height. The entire process is completed by the operator screwing the first fixing nut 11, the first support nut 9 and the second fixing nut 10, and coordinating the lifting device 6 to lift and lower the bottom mold 1. The entire bottom mold device can make the disassembly process of the bottom mold 1 do not require the assistance of a large crane. The boom assembly 7 has a simple structure and low cost, and is suitable for batch arrangement on high-pile docks. Compared with large cranes, it has lower cost and is more cost-effective.

[0079] Moreover, since the lifting structure 2 can form a stable suspension support for the bottom mold 1, the work of disassembling the bottom mold 1 does not need to be performed on the floating raft. Compared with the working condition where the floating raft floats with the water, the lifting structure 2 of the present application can form a stable suspension support for the bottom mold 1, which makes it safer for the operator to disassemble the bottom mold 1.

[0080] The vertical suspension rod 8 can be configured as a stepped structure with a smaller top and a larger bottom to facilitate the rapid installation of each nut.

[0081] Example 2

[0082] like Figure 1-6As shown, a casting system described in this embodiment includes a cast-in-place beam structure 14 and a bottom formwork device for the cast-in-place beam structure on the upper part of the high-pile wharf as described in Example 1, and the support legs 5 are connected to the cast-in-place beam structure 14.

[0083] In a preferred embodiment, the supporting legs 5 are clamped on the cast-in-place beam structure 14 via U-shaped components 19 .

[0084] In a preferred embodiment, the support legs 5 and the cast-in-place beam structure 14 are swung together in a transverse manner.

[0085] In a specific preferred embodiment, a vertical through hole is provided on the support leg 5 , and a connecting bolt 20 passes through the vertical through hole and is connected to the cast-in-place beam structure 14 , and the support leg 5 can swing laterally around the connecting bolt.

[0086] The cast-in-situ beam structure 14 is preferably a convex beam or a strip beam structure.

[0087] Example 3

[0088] like Figure 7-14 As shown, a disassembly method described in this embodiment is used to disassemble the bottom formwork device for the cast-in-situ beam structure on the upper part of the high-pile wharf as described in Example 1, comprising the following steps:

[0089] A1. Rotate the first fixing nut 11 and cause the first fixing nut 11 to rise a distance along the vertical boom 8;

[0090] A2. Lift the lifting device 6 up the upper beam 3 for a certain distance;

[0091] A3. Clamp the first fixing nut 11 and the first support nut 9 from the upper and lower sides of the upper beam 3 to the upper beam 3;

[0092] A4. Continue to lift the lifting device 6 to disengage the lower crossbeam 4 from the second fixing nut 10. The vertical spacing between the lower crossbeam 4 and the second fixing nut 10 is a first distance H1. [The first distance H1 is typically 1-2 mm. This 1-2 mm displacement space is provided by deformation of the bottom mold 1 or axial deformation of the vertical suspension rod 8.]

[0093] A5. Rotate the second fixing nut 10 and raise the second fixing nut 10 along the vertical boom 8 to a second distance H2, where the second distance H2 is greater than the first distance H1;

[0094] A6. The lifting device 6 falls back, so that the vertical boom 8 drives the bottom mold 1 to fall until the lower beam 4 re-supports the second fixing nut 10;

[0095] A7. Repeat A1-A6 until the bottom mold 1 falls to the target height and the bottom mold 1 and the lifting structure 2 are separated.

[0096] The present application describes a disassembly method. When the base form 1 is in use, the support legs 5 support the lower cross beam 4, and the lower cross beam 4 supports the second fixing nut 10. Since the second fixing nut 10 is threadedly engaged with the vertical hanger 8, and the lower part of the vertical hanger 8 is connected to the base form 1, the lower cross beam 4 achieves the purpose of stably setting the base form 1 in the construction position by supporting the vertical hanger 8.

[0097] When the bottom mold 1 needs to be disassembled, the jacking device 6 is first adjusted to the extended state, but there is still a certain jacking space; then the first fixing nut 11 and the first supporting nut 9 are clamped on the upper and lower sides of the upper beam 3; then the jacking device 6 is lifted to make the upper beam 3 rise a first distance H1 [the first time is generally 1-2 mm, at this time, the displacement space of 1-2 mm is provided by the structural deformation of the bottom mold 1 or the axial structural deformation of the vertical hanger 8], the lower beam 4 is separated from the second fixing nut 10, and the two are no longer subjected to mutual force, so that the operator can tighten the second fixing nut 10 with an ordinary wrench; turn the second fixing nut 10, and make the second fixing nut 10 rise along the vertical hanger 8 by a second distance Distance H2, the second distance H2 is greater than the first distance H1; then the jacking device 6 falls back until the lower crossbeam 4 supports the second fixing nut 10 again. At this time, since the vertical boom 8 is vertically limitedly connected to the bottom mold 1, the vertical boom 8 drives the bottom mold 1 to fall; then the above process is repeated until the bottom mold 1 falls to the target height. The entire process is completed by the operator screwing the first fixing nut 11, the first support nut 9 and the second fixing nut 10, and coordinating the lifting device 6 to lift and lower the bottom mold 1. The entire bottom mold device can make the disassembly process of the bottom mold 1 do not require the assistance of a large crane. The boom assembly 7 has a simple structure and low cost, and is suitable for batch arrangement on high-pile docks. Compared with large cranes, it has lower cost and is more cost-effective.

[0098] Moreover, since the lifting structure 2 can form a stable suspension support for the bottom mold 1, the work of disassembling the bottom mold 1 does not need to be performed on the floating raft. Compared with the working condition where the floating raft floats with the water, the lifting structure 2 of the present application can form a stable suspension support for the bottom mold 1, which makes it safer for the operator to disassemble the bottom mold 1.

[0099] In a preferred embodiment, a steel pipe pile is provided at the lower portion of the cast-in-place beam structure 14, and a corbel is detachably connected to the steel pipe pile. The corbel is used to support the bottom form 1. When the bottom form 1 includes a template 12 and a beam structure 13 for supporting the template 12:

[0100] In a preferred embodiment, before step A1, the step of disassembling the corbel is further included: connecting the corbel to the beam structure 13, and then disassembling and separating the corbel from the steel pipe pile;

[0101] The corbel is connected to the beam structure 13 to prevent the corbel from falling directly onto the raft after being disassembled and causing structural damage to the raft. In addition, the corbel can be slowly lowered along with the bottom form 1 in the later stage, omitting the separate corbel lowering step and saving construction time.

[0102] Preferably, the bracket is configured as two semicircular structures, which are connected to the steel pipe pile by bolts. During construction, a small hole is provided on the template 12, and the operator inserts a tool (such as a bolt wrench) through the small hole on the template 12 and then removes the bolt.

[0103] Preferably, in A7, when the bottom form 1 falls to a height H from the floating row, it stops falling, then the template 12 is disassembled, and the disassembled parts are placed on the floating row, and then the beam structure 13 is continued to be lowered until the beam structure 13 falls on the floating row, and the bottom form 1 and the lifting structure 2 are separated.

[0104] More specifically, H ≤ 300 mm.

[0105] 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 in the scope of protection of the present invention.

Claims

1. The bottom formwork device of the cast-in-situ beam structure on the upper part of the high-pile wharf is characterized by: The invention comprises a bottom mold (1) and a hoisting structure (2) connected to both ends of the bottom mold (1) in the longitudinal direction, wherein the hoisting structure (2) comprises a lower crossbeam (4), a support leg (5) and at least two suspension rod assemblies (7) spaced apart along the width direction of the bottom mold (1), wherein the lower crossbeam (4) is arranged along the width direction of the bottom mold (1); the support leg (5) supports the lower crossbeam (4); the suspension rod assembly (7) comprises an upper crossbeam (3) and at least two vertical suspension rods (8) spaced apart in the transverse direction, wherein the upper crossbeam (3) is located above the lower crossbeam (4); the vertical suspension rods (8) pass through the upper crossbeam (3) and the lower crossbeam (4); a jacking device (6) is supported between the upper crossbeam (3) and the lower crossbeam (4); the jacking device (6) is located between the two vertical suspension rods. The vertical suspender (8) is threadedly matched with a first fixing nut (11), a first supporting nut (9) and a second fixing nut (10) in sequence from top to bottom, the first supporting nut (9) is supported at the bottom of the upper beam (3), the first fixing nut (11) is located at the top of the upper beam (3), and the first fixing nut (11) and the first supporting nut (9) can clamp the upper beam (3) from the upper and lower sides of the upper beam (3), the second fixing nut (10) is located at the top of the lower beam (4), and the lower beam (4) can support the second fixing nut (10), the bottom mold (1) is located below the lower beam (4), and the vertical suspender (8) is vertically limitedly connected to the bottom mold (1); The bottom formwork (1) comprises a formwork (12) and a beam structure (13) for supporting the formwork (12), wherein the beam structure (13) is vertically limitedly connected to the vertical suspension rod (8); The boom assembly (7) includes a bottom cross beam (15), a third fixing nut (17) and a pressure plate (18). A support portion (16) is provided at the bottom of the vertical boom (8). The support portion (16) supports the bottom cross beam (15). The end portion of the corresponding beam structure (13) passes through the gap between the two vertical booms (8) of the same boom assembly (7) and is supported on the bottom cross beam (15). The third fixing nut (17) is threadedly engaged with the vertical boom (8). The third fixing nut (17) can abut against the pressure plate (18), so that the pressure plate (18) and the bottom cross beam (15) form a vertical limit for the beam structure (13).

2. The bottom formwork device for the cast-in-situ beam structure on the upper part of the high-pile wharf according to claim 1 is characterized in that: The jacking device (6) is connected to the upper crossbeam (3).

3. The bottom formwork device for the cast-in-situ beam structure on the upper part of the high-pile wharf according to claim 2, characterized in that: Adjacent upper crossbeams (3) are arranged at intervals.

4. The bottom formwork device for the cast-in-situ beam structure on the upper part of the high-pile wharf according to claim 1, characterized in that: There are at least two supporting legs (5) located on the same side of the bottom mold (1), one end of the supporting leg (5) is tilted to pass through the gap between the two vertical suspension rods (8) of the same suspension rod assembly (7), and forms a limit for the suspension rod assembly (7) along the length direction of the bottom mold (1), and the end of the supporting leg (5) away from the suspension rod assembly (7) is tilted toward the inside of the bottom mold (1).

5. A pouring system, characterized in that: It comprises a cast-in-place beam structure (14) and a bottom formwork device for a cast-in-place beam structure on a high-pile wharf as claimed in any one of claims 1 to 4, wherein the support legs (5) are connected to the cast-in-place beam structure (14).

6. A pouring system according to claim 5, characterized in that: The supporting legs (5) are in lateral swing cooperation with the cast-in-place beam structure (14).

7. A disassembly method, characterized in that: The method for dismantling the bottom formwork device for the cast-in-situ beam structure on the upper portion of a high-pile wharf according to any one of claims 1 to 4 comprises the following steps: A1. rotating the first fixing nut (11) and causing the first fixing nut (11) to rise a certain distance along the vertical boom (8); A2. Lift the jacking device (6) onto the crossbeam (3) for a certain distance; A3. Clamp the upper beam (3) with the first fixing nut (11) and the first supporting nut (9) from the upper and lower sides of the upper beam (3); A4. Continue to lift the lifting device (6) so that the lower beam (4) is separated from the second fixing nut (10), and the vertical distance between the lower beam (4) and the second fixing nut (10) is a first distance H1; A5. Rotate the second fixing nut (10) and raise the second fixing nut (10) along the vertical boom (8) by a second distance H2, wherein the second distance H2 is greater than the first distance H1; A6. The lifting device (6) falls back, so that the vertical suspension rod (8) drives the bottom mold (1) to fall until the lower crossbeam (4) supports the second fixing nut (10) again; A7. Repeat A1-A6 until the bottom mold (1) falls to the target height and the bottom mold (1) and the lifting structure (2) are separated.

8. A disassembly method according to claim 7, characterized in that: A steel pipe pile is provided at the lower portion of the cast-in-place beam structure (14), and a corbel is detachably connected to the steel pipe pile. The corbel is used to support the bottom form (1). When the bottom form (1) includes a template (12) and a beam structure (13) for supporting the template (12): Before A1, the method further includes the step of disassembling the corbel: connecting the corbel to the beam structure (13), and then disassembling and separating the corbel from the steel pipe pile; and / or, In A7, when the bottom form (1) falls to a height H from the floating row, it stops falling, then the template (12) is disassembled, and the disassembled parts are placed on the floating row, and then the beam structure (13) is continued to be lowered until the beam structure (13) falls on the floating row, and the bottom form (1) and the lifting structure (2) are separated.

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