Fast-assembly type open caisson construction formwork and construction method

Abstract

The invention discloses a fast-assembly type open caisson construction formwork and a construction method, the formwork is of a plate-shaped structure, at least two formworks are erected in parallel in the first direction, and a pouring space for pouring is formed by an interlayer between the two formworks; each main edge is of a rod-shaped structure, the main edges extend in the first direction to be arranged on the outer sides of the formworks, and the two main edges oppositely arranged on the two sides of the pouring space form a clamping effect on the two formworks; the pressing device is arranged on the outer side of the main ridge in the third direction, and the pressing device generates acting force tightening towards the pouring space in the second direction on the main ridge when being subjected to external force; the opposite-pulling device penetrates through the formworks on the two sides of the pouring space in the second direction and generates acting force for tightening the formworks towards the pouring space in the second direction. Fastening of the two sides of the formwork is achieved through the opposite-pulling devices; by applying pressure to the pressing devices, continuous acting force on the main ridges can be completed, construction of a construction operation platform in the open caisson is omitted, meanwhile, the construction efficiency is improved, and the construction risk of operators is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of caisson construction, and more specifically, to a quick-assembly type caisson construction formwork and a construction method. Background Art

[0002] In the field of caisson construction, when pouring concrete for the caisson wall, how to fix the formwork on both sides well and how to prevent the formwork from bursting due to insecure installation during pouring are crucial to the construction quality. Especially when the construction depth of the caisson formwork reaches more than 3 meters, due to the relatively large difficulty in fixing the formwork, it is impossible to complete the formwork fixing construction unilaterally. It is often necessary to build a construction operation platform inside the caisson to fix the formwork inside the caisson. The construction of the operation platform has a great impact on the construction period and there are safety risks of working at heights. Summary of the Invention

[0003] The present invention provides a quick-assembly type caisson construction formwork and a construction method to solve the technical problems in the prior art that it is necessary to build a construction operation platform inside the caisson for operation because the formwork construction cannot be completed unilaterally, resulting in a longer construction period and safety hazards at the same time.

[0004] To achieve the above object, the present invention provides a quick-assembly type caisson construction formwork, including: a formwork, the formwork is a plate-like structure, at least two of the formworks are erected parallelly along a first direction, and an interlayer between the two formworks forms a pouring space for pouring; a main rib, the main rib is a rod-like structure, the main rib extends along the first direction and is arranged outside the formwork, and two main ribs oppositely arranged on both sides of the pouring space clamp the two formworks; a pressing device, the pressing device is arranged outside the main rib along a third direction, and when the pressing device is subjected to an external force, it generates a force that tightens the main rib along a second direction towards the pouring space; a tensioning device, the tensioning device passes through the formworks on both sides of the pouring space along the second direction and generates a force that tightens the formworks along the second direction towards the pouring space.

[0005] Furthermore, the pressing device includes: a horizontal connecting member, one end of the horizontal connecting member is fixed to the outside of the formwork, the main rib is placed on the horizontal connecting member, and the other end of the horizontal connecting member is provided with an opening; a rod body, the rod body passes through the opening; a cone, the cone is larger at the top and smaller at the bottom, the cone is arranged at the position where the rod body is combined with the main rib, and when the pressing device is stressed, the cone fits the arc surface of the main rib and moves downward to generate a pressing force on the main rib.

[0006] Furthermore, the clamping device includes a rotating handle, and the rod body is a multi-section telescopic structure. Rotating the rotating handle pushes the rod body to extend through the gear meshing structure inside the clamping device, thereby driving the vertebral body to move downward.

[0007] Furthermore, a pulling hole is provided on the template plane, a spring end is provided at one end of the pulling device, and a screw is provided at the other end. After the spring end passes through the pulling hole and is located outside the template, when the pulling device is pulled back, the spring end opens to limit the reverse movement of the pulling device.

[0008] Furthermore, the spring end comprises a spring sheet and a clamp, the clamp can be stretched to limit the reverse movement of the pulling device, and the spring sheet is arranged between the clamp and the main body of the pulling device to prevent the clamp from closing.

[0009] Furthermore, a rib is provided on the outer side of the template, the rib extends along the second direction, there are at least two ribs, and the two ribs are spaced apart along the first direction.

[0010] Furthermore, the ribs are provided with connection holes, and a plurality of the connection holes are arranged at intervals along the third direction.

[0011] Furthermore, it also includes a pin, and a plurality of the templates are arranged adjacent to each other along the first direction, and the pin passes through the connecting holes of two adjacent templates for fixing.

[0012] Furthermore, it also includes a template bottom support member, which is L-shaped, and one end of a plurality of template bottom support members is inserted into the concrete of the previous caisson to form a fixed support for the template.

[0013] The present invention also provides a construction method of a quick-install caisson construction template, comprising the following steps:

[0014] S1: Weld the clamping device to the template through the horizontal connecting piece, and splice the template blocks according to the on-site construction size requirements. Insert the pins between two adjacent templates into the connecting holes in the ribs and fix them; after the splicing is completed, put the main ribs into the horizontal connecting piece between the template and the clamping device;

[0015] S2: Put the assembled construction template as a whole into the bottom of the foundation pit or the bottom support inserted during the construction of the previous caisson, then insert the spring end of the tensioning device through the tensioning hole of the template, and pull the tensioning device backward to open the spring end. Then, the operator fixes the screw at the other end of the tensioning device with a nut;

[0016] S3: Rotate the rotating handle so that the cone of the pressing device moves downward, thereby pressing the main rib, and maintaining the pressing state through the gear engagement structure in the pressing device;

[0017] S4: After checking and finding no errors, pour the concrete and vibrate it thoroughly. When the concrete strength reaches the form removal requirement, rotate the rotating handle in the reverse direction so that the cone of the pressing device moves upward to release the pressure on the main rib. Remove the nut on the tension device, push the tension device to make the spring end pop back, pull out the tension device, and move the construction form as a whole; If the next section of the caisson construction is to be carried out, insert multiple form bottom supports into the caisson concrete poured in this step; If the next section of the caisson construction is not required, there is no need to insert the form bottom supports;

[0018] S5: Repeat steps S1 - S4 until the entire caisson construction is completed.

[0019] The beneficial effects of the present invention are as follows:

[0020] In the present invention, the main rib is arranged to extend along the first direction on the outside of the form to form a clamping effect on the form. The main rib is pressed by the pressing device arranged along the third direction. When the pressing device is subjected to an external force, it generates a force that tightens towards the pouring space along the second direction on the main rib, thereby realizing the clamping and fixing of the form without the need to build a construction platform in the caisson space, shortening the construction period and reducing potential safety hazards.

[0021] One end of the tension device of the present invention is provided with a spring end. After passing the spring end through the form to the outside, the spring end is pulled back and opened to limit the reverse movement of the tension device, realizing the fixation of the tension device on one side without the need for operations on both sides, improving work efficiency.

[0022] Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0023] The drawings incorporated in the specification and constituting a part of the specification illustrate the embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0024] Figure 1 is a three - dimensional schematic diagram of the construction site of the embodiment of the present invention;

[0025] Figure 2 is a three - dimensional schematic diagram of the embodiment of the present invention;

[0026] Figure 3 is a sectional view of the construction site of the embodiment of the present invention;

[0027] Figure 4 It is a side view of the construction site in the embodiment of the present invention;

[0028] Figure 5 It is another three-dimensional schematic diagram of the embodiment of the present invention;

[0029] Figure 6 It is an overall matching three-dimensional diagram of the embodiment of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the pressing device in the embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of the tensioning device in the embodiment of the present invention;

[0032] Figure 9 It is Figure 8 An enlarged view of the tightened state of the spring end at position A in;

[0033] Figure 10 It is Figure 8 An enlarged view of the opened state of the spring end at position A in;

[0034] Figure 11 It is a structural schematic diagram of the embodiment of the present invention when the rotating handle is not tightened;

[0035] Figure 12 It is a schematic diagram of the embodiment of the present invention when the rotating handle is not tightened;

[0036] Figure 13 It is a schematic diagram of the embodiment of the present invention when the rotating handle is tightened.

[0037] Reference numerals:

[0038] Formwork 1; Main rib 2; Pressing device 3; Tensioning device 4; Formwork bottom plate support 5; Upper-section caisson 6;

[0039] Horizontal connecting piece 31; Opening 32; Rod body 33; Cone 34; Rotating handle 35;

[0040] Tensioning hole 11; Rib 12; Connecting hole 13; Plug 14;

[0041] Spring end 41; Screw 42; Spring piece 43; Clamping part 44. Detailed implementation manners

[0042] Now, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0043] The following description of at least one exemplary embodiment is merely illustrative and is in no way a limitation on the present invention, its application, or its use.

[0044] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be considered as part of the specification.

[0045] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0046] It should be noted that like reference numerals and letters in the following figures indicate like items, and thus, once an item is defined in one figure, further discussion thereof in subsequent figures is not required.

[0047] In the description and claims of the present invention, features related to the terms "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "a plurality of" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0048] In the description of the present invention, it should be understood that if terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are used to indicate the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0049] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The following specifically describes a quick-installing caisson construction formwork according to an embodiment of the present invention in conjunction with the drawings.

[0051] The quick - installation caisson construction formwork according to an embodiment of the present invention includes: formwork 1, which is a plate - like structure. At least two formworks 1 are erected parallel along the first direction, and the interlayer between the two formworks 1 forms a pouring space for pouring; main ribs 2, which are rod - like structures. The main ribs 2 extend along the first direction and are arranged on the outer side of the formwork 1. Two main ribs 2 arranged oppositely on both sides of the pouring space clamp the two formworks 1; a pressing device 3, which is arranged on the outer side of the main ribs 2 along the third direction. When the pressing device 3 is subjected to an external force, it generates a force that tightens the main ribs 2 along the second direction towards the pouring space; a tensioning device 4, which passes through the formworks 1 on both sides of the pouring space along the second direction and generates a force that tightens the formworks 1 along the second direction towards the pouring space.

[0052] In other words, the quick - installation caisson construction formwork according to an embodiment of the present invention includes: formwork 1, main ribs 2, a pressing device 3, and a tensioning device 4.

[0053] Among them, the formwork 1 is a plate - like structure, preferably a steel formwork. As the formwork for the caisson wall, the steel formwork has high strength, high turnover utilization rate, and good demoulding effect. The size of the formwork 1 can be designed according to construction requirements. In this embodiment, the preferred size is 1000×1500×5mm. As Figure 1 、 Figure 2 shown, at least two formworks 1 are erected parallel along the first direction, and the interlayer between the two formworks 1 forms a pouring space for pouring.

[0054] The main ribs 2 are rod - like structures, preferably made of steel pipes, and the preferred size is 48mm×3.5mm. The main ribs 2 extend along the first direction and are arranged on the outer side of the formwork 1. The number of main ribs 2 on one side of the formwork 1 is at least 1, and can also be multiple, specifically determined according to the design strength. Two main ribs 2 arranged oppositely on both sides of the pouring space clamp the two formworks 1. As the main load - bearing members, the main ribs 2 primarily function to resist the horizontal load generated on the formwork 1 during concrete pouring. This resistance ensures the stability and firmness of the formwork 1 during the pouring process, preventing the formwork 1 from deforming or bursting due to excessive force.

[0055] The pressing device 3 is arranged on the outer side of the main ribs 2 along the third direction. After the main ribs 2 are placed on the outer side of the formwork 1, construction workers do not need to enter the inner side of the caisson to fix the main ribs. They only need to apply a force to the pressing device 3 on the outer side of the formwork 1. When the pressing device 3 is subjected to an external force, it generates a force that tightens the main ribs 2 along the second direction towards the pouring space.

[0056] The tension device 4 passes through the formworks 1 on both sides of the pouring space along the second direction, connects the formworks 1 on both sides, and generates a tightening force on the formworks 1 along the second direction towards the pouring space, playing a role in fixing the formworks. As the pouring height increases during the pouring process, the lateral pressure borne by the formworks 1 also gradually increases. The tension device 4 can effectively resist this lateral pressure, prevent the formworks 1 from deforming or shifting, and ensure the smooth progress of the pouring process.

[0057] For the quick-installing open caisson construction formwork according to the embodiment of the present invention, the tension device 4 fixes the formworks 1 on both sides and generates a tightening force on the formworks 1 along the second direction towards the pouring space, playing a role in fixing the formworks. The main ribs 2 are arranged on the outer side of the formworks 1 along the first direction to form a clamping effect on the formworks 1. The pressing device 3 arranged along the third direction presses the main ribs 2. When the pressing device 3 is subjected to an external force, it generates a tightening force on the main ribs 2 along the second direction towards the pouring space, so as to realize the clamping and fixing of the formworks without building a construction platform in the open caisson space, shortening the construction period and reducing potential safety hazards.

[0058] According to an embodiment of the present invention, the pressing device 3 includes: a horizontal connecting member 31, one end of the horizontal connecting member 31 is fixed to the outer side of the formwork 1, the main rib 2 is placed on the horizontal connecting member 31, and the other end of the horizontal connecting member 31 is provided with an opening 32; a rod body 33, the rod body 33 passes through the opening 32; a cone body 34, the cone body 34 is larger at the top and smaller at the bottom, and the cone body 34 is arranged at the position where the rod body 33 is combined with the main rib 2. When the pressing device 3 is stressed, the cone body 34 moves downward along the arc surface of the main rib 2 to generate a pressing force on the main rib 2.

[0059] In other words, the pressing device 3 is composed of a horizontal connecting member 31, a rod body 33 and a cone body 34. The horizontal connecting member 31 is preferably a steel plate, which extends along the second direction. One end of it is welded and fixed to the outer side of the formwork 1, and the other end is far away from the formwork 1 and provided with an opening 32. The rod body 33 passes through the opening 32. The main rib 2 is placed on the horizontal connecting member 31. A cone body 34 is arranged at the position where the rod body 33 is combined with the main rib 2. The cone body has a shape that is larger at the top and smaller at the bottom. When the pressing device 3 is subjected to a force, the rod body 33 drives the cone body 34 to move downward. At this time, the conical surface of the cone body 34 fits the arc surface of the main rib 2, so that the cone body 34 generates a pressing force on the main rib 2 in the next process. The force has both a downward force along the third direction and a tightening force along the second direction towards the pouring space.

[0060] Thus, for the quick-installing open caisson construction formwork according to the present invention, when the pressing device 3 is subjected to an external force, the rod body 33 drives the cone body 34 to move downward along the third direction, thereby generating a pressing force on the main rib 2, enhancing the lateral stiffness of the formwork 1, providing a more uniform lateral resistance during the processes of concrete pouring, vibration and curing, compensating for the uneven resistance caused by the local stress of the tension device 4, and playing a good role in fixing the formwork 1 to prevent the occurrence of formwork bulging and bursting.

[0061] According to an embodiment of the present invention, the pressing device 3 includes a rotating handle 35. The rod body 33 is a multi-section telescopic structure. Rotating the rotating handle 35 drives the rod body 33 to extend through the gear engagement structure inside the pressing device 3, driving the cone body 34 to move downward.

[0062] That is to say, the pressing device 3 further includes a rotating handle 35. The rotating handle 35 is connected to the top of the rod body 33, close to the outer top of the formwork 1. The rod body 33 is a multi-section telescopic structure. The cone body 34 on each pressing device 3 is located on different sections of the telescopic rod body 33. The internal part where the rotating handle 35 is connected to the rod body 33 is provided with a gear engagement structure. By rotating the rotating handle 35, the rod body 33 can be driven to telescopically extend in multiple sections through the internal gear engagement structure. Rotating the rotating handle 35, the internal gear engagement structure pushes the rod body 33 to extend, driving the cone body 34 to move downward along the third direction; stopping the rotation of the rotating handle 35, the internal gear engagement structure can maintain the pressure to achieve a continuous pressing force on the main rib 2.

[0063] As Figure 12 shown, it is a schematic diagram when the rotating handle 35 of the embodiment of the present invention is not pressed. At this time, the rotating handle 35 is in a non-pressed state, and the rod body 33 driven by the gear engagement structure inside the rod body 33 is in a contracted state. When the rotating handle 35 is rotated to the Figure 13 shown pressed state process, the internal gear engagement structure starts to drive, making the rod body 33 gradually extend in multiple sections, driving the cone body 34 to move downward along the third direction, and gradually maintaining a pressing force on the main rib 2.

[0064] Thus, for the quick-installing open caisson construction formwork according to the present invention, after the rotating handle 35 is rotated, the rod body 33 can be telescopically adjusted through the internal gear engagement structure to drive the cone body 34 to generate a continuous pressing force on the main rib 2. The operator only needs to stand outside the formwork 1 and rotate the rotating handle 35 to complete the fixation of the main rib 2, without the need to enter the inside of the open caisson to fix the internal formwork, eliminating the step of building a construction operation platform inside the open caisson, shortening the construction period, and reducing potential safety hazards.

[0065] According to one embodiment of the present invention, a pulling hole 11 is provided on the plane of the template 1, a spring end 41 is provided at one end of the pulling device 4, and a screw 42 is provided at the other end. After the spring end 41 passes through the pulling hole 11 and is located outside the template 1, when the pulling device 4 is pulled back, the spring end 41 opens to limit the reverse movement of the pulling device 4.

[0066] In other words, Figure 5 As shown, a pulling hole 11 is provided on the plane of the template 1 for the pulling device 4 to pass through. Figures 8 - 10 As shown, a spring end 41 is provided at one end of the tensioning device 4, and a screw 42 is provided at the other end. When in use, the spring end 41 is passed through two oppositely arranged alignment holes 11. After the spring end 41 is outside the template 1, the spring end 41 is in an open state. At this time, the diameter of the opened spring end is larger than the diameter of the alignment hole 11, and the tensioning device 4 cannot be moved in the opposite direction. The screw 42 at the other end is fixed by a nut, and the nuts on both sides and the opened spring end 41 form a clamping force on the templates 1 on both sides, thereby enhancing the lateral deformation capacity of the template.

[0067] Therefore, according to the quick-install caisson construction formwork of the present invention, through the self-opening function of the spring end 41, the operator only needs to insert the pulling device 4 on the outside of the single-sided formwork 1 and then fix the nut, avoiding the operator from operating on the inside or both sides of the formwork, saving time and effort.

[0068] According to one embodiment of the present invention, the spring end 41 includes a spring sheet 43 and a clamp 44. The clamp 44 can be stretched to limit the reverse movement of the pulling device 4. The spring sheet 43 is arranged between the clamp 44 and the main body of the pulling device 4 to prevent the clamp 44 from closing.

[0069] In other words, Figure 9 , Figure 10 As shown, the spring end 41 completes the reverse movement restriction of the tensioning device 4 through the cooperation of the spring sheet 43 and the clamp 44. Specifically, the spring sheet 43 is arranged between the clamp 44 and the main body of the tensioning device 4, and the clamp 44 can make a closing movement relative to the main body of the tensioning device 4. Under normal conditions, the spring sheet 43 prevents the clamp 44 from closing. The distance dimension of the clamp 44 under normal conditions is greater than the diameter of the tensioning hole 11. When passing through the tensioning hole 11, the clamp 44 is subjected to the resistance of the tensioning hole 11, which will form pressure on the spring sheet 43 so that the spring sheet 43 is compressed, and the clamp 44 is closed and tightened accordingly, and smoothly passes through the tensioning hole 11. Subsequently, under the action of the spring sheet 43, the clamp 44 returns to its original state, reversely pulls the tensioning device 4, and the clamp 44 is further stretched. At the screw rod 42 at the other end of the tensioning device 4, the fixing nut is tightened to complete the tightening of the tensioning device 4 on the template 1.

[0070] According to an embodiment of the present invention, rib strips 12 are provided on the outer side of the formwork 1. The rib strips 12 extend in the second direction, and there are at least two rib strips 12, and the two rib strips 12 are arranged at intervals in the first direction.

[0071] In other words, rib strips 12 extending in the second direction are provided on the outer side of the formwork 1, with at least two in number. The multiple rib strips 12 are arranged at intervals in the first direction. The thickness of the rib strips 12 is preferably 10 mm, and the rib strips 12 can enhance the stiffness of the formwork 1.

[0072] In some specific embodiments of the present invention, connection holes 13 are provided on the rib strips 12, and the multiple connection holes 13 are arranged at intervals in the third direction.

[0073] In other words, connection holes 13 are provided on the rib strips 12. The diameter of the connection holes 13 is preferably 18 mm. The multiple connection holes 13 are arranged at intervals in the third direction. The distances from the connection holes 13 in the upper and lower rows to the edge of the formwork 1 are both 150 mm, and the hole spacing of the connection holes 13 in the middle part is 200 mm. Steel bars can be inserted into the connection holes 13 when necessary to increase the lateral resistance.

[0074] In some specific embodiments of the present invention, it further includes a bolt 14. The multiple formworks 1 are arranged adjacent to each other in the first direction, and the bolt 14 passes through the connection holes 13 of two adjacent formworks 1 for fixation.

[0075] In other words, as Figure 2 、 Figure 3 、 Figure 5 shown, the quick-installing caisson construction formwork according to the present invention further includes a bolt 14. The bolt 14 is preferably composed of an L-shaped pin rod and a triangular plug. The size of the L-shaped pin rod is preferably 30 mm × 60 mm, and the diameter is preferably 16 mm. The bolt 14 is used to fix the multiple adjacent formworks 1. When the multiple formworks 1 are arranged adjacent to each other in the first direction, the bolt 14 is arranged between the connection holes 13 of two adjacent formworks 1, and the adjacent formworks 1 are fixed by the L-shaped pin rod and the triangular plug.

[0076] In some specific embodiments of the present invention, it further includes a formwork bottom support 5. The formwork bottom support 5 is L-shaped. One end of the multiple formwork bottom supports 5 is inserted into the concrete of the upper section of the caisson 6 to form a fixed support for the formwork 1.

[0077] In other words, as Figure 4 、 Figure 5As shown in the figure, the quick - assembly caisson construction formwork according to the present invention further includes a formwork bottom support member 5. The formwork bottom support member 5 is preferably bent into an L - shape with φ16 steel bars, and the size is preferably 50mm×150mm. It is inserted into the previous section of the caisson 6 before the concrete initial setting. The long end is inserted, and the embedding length is 100mm, and the exposed length of the long end is 50mm. The exposed part of the long end and the short end form a support part, and the short end part is vertically upward to form a fixed support for the formwork 1. Multiple formwork bottom support members 5 are inserted at intervals. The formwork bottom support member 5 can bear the weight of all the formwork 1 and other components above it and maintain the stability of the formwork 1.

[0078] Thus, for the quick - assembly caisson construction formwork according to the present invention, by inserting the formwork bottom support member 5 into the concrete of the previous section of the caisson 6 to support the formwork for the next section of caisson construction, the problem of unstable bottom support of the formwork 1 can be effectively solved.

[0079] In some specific embodiments of the present invention, a construction method for the quick - assembly caisson construction formwork is also provided, including the following steps:

[0080] S1: Weld the pressing device 3 to the formwork 1 through the horizontal connecting member 31. At the same time, according to the on - site construction dimension requirements, splice the number of formwork blocks 1. Adjacent two formworks 1 are fixed by inserting the pin 14 into the connecting hole 13 in the rib 12; after splicing, place the main rib 2 on the horizontal connecting member 31 between the formwork 1 and the pressing device 3;

[0081] S2: Place the assembled construction formwork as a whole at the bottom of the foundation pit or into the formwork bottom support member 5 inserted during the construction of the previous section of the caisson 6. Then, pass the spring end 41 of the tensioning device 4 through the tensioning hole 11 of the formwork 1 and pull the tensioning device 4 in the opposite direction to make the spring end 41 open. Subsequently, the operator fixes the screw rod 42 at the other end of the tensioning device 4 with a nut;

[0082] S3: Rotate the rotating handle 35 so that the cone 34 of the pressing device 3 moves downward, thereby pressing the main rib 2, and maintaining the pressing state through the internal gear engagement structure of the pressing device 3;

[0083] S4: After checking and ensuring there is no error, pour the concrete and vibrate it densely. When the concrete strength reaches the formwork removal requirement, rotate the rotating handle 35 in the reverse direction so that the cone 34 of the pressing device 3 moves upward to release the pressure on the main rib 2. Remove the nut on the tensioning device 4, push the tensioning device 4 to make the spring end 41 bounce back, pull out the tensioning device 4, and move the construction formwork as a whole out; if the construction of the next section of the caisson is required, insert multiple formwork bottom support members 5 into the caisson concrete poured in this step; if the construction of the next section of the caisson is not required, there is no need to insert the formwork bottom support member 5;

[0084] S5: Repeat steps S1-S4 until the entire caisson construction is completed.

[0085] That is to say, in the construction method of a quick-install caisson construction template provided by the present invention:

[0086] First, the clamping device 3 is welded to the template 1 through the horizontal connecting piece 31, and the number of templates 1 is spliced ​​according to the on-site construction size requirements. The two adjacent templates 1 are inserted into the connecting hole 13 in the rib 12 by the latch 14 and fixed; after the splicing is completed, the main rib 2 is placed on the horizontal connecting piece 31 between the template 1 and the clamping device 3;

[0087] Then, the assembled construction template is placed as a whole into the bottom of the foundation pit or the template bottom support 5 inserted during the construction of the previous caisson 6, and then the spring end 41 of the tensioning device 4 is inserted through the tensioning hole 11 of the template 1, and the tensioning device 4 is pulled back to open the spring end 41. Subsequently, the operator fixes the screw rod 42 at the other end of the tensioning device 4 with a nut. Due to the self-opening function of the spring end 41, the operator only needs to insert the tensioning device 4 on the outside of the single-sided template 1 and then fix it with a nut, avoiding the operator from operating on the inside or both sides of the template, saving time and effort.

[0088] Next, rotate the rotating handle 35, and the internal gear meshing structure starts to transmit so that the rod body 33 is gradually extended in multiple sections, driving the vertebral body 34 to move downward along the third direction, gradually maintaining the clamping force on the main rib 2, and maintaining the clamping state through the internal gear meshing structure of the clamping device 3; after the rotating handle 35 is rotated, the rod body 33 can be telescopically adjusted through the internal gear meshing structure to drive the vertebral body 34 to generate continuous clamping force on the main rib 2. The operator only needs to stand on the outside of the template 1 and rotate the rotating handle 35 to complete the fixation of the main rib 2. There is no need to enter the caisson to fix the internal mold, which saves the step of building a construction work platform in the caisson, shortens the construction period, and reduces safety hazards.

[0089] Then, after checking that everything is correct, pour the concrete and vibrate it to make it dense. When the concrete strength reaches the requirement for demoulding, rotate the handle 35 in the opposite direction to move the vertebral body 34 of the clamping device 3 upward to release the pressure on the main rib 2, remove the nut on the tensioning device 4, push the tensioning device 4 to make the spring end 41 rebound, pull out the tensioning device 4, and remove the construction template 1 as a whole; if the next section of caisson construction is required, insert multiple template bottom support members 5 into the caisson concrete poured in this step; if the next section of caisson construction is not required, there is no need to insert the template bottom support members 5;

[0090] Finally, repeat the above steps until the entire caisson pouring construction is completed.

[0091] For the quick-installation type open caisson construction formwork according to the present invention, the main rib 2 of the present invention is arranged to extend along the first direction on the outer side of the formwork 1 to form a clamping effect on the formwork 1, and the pressing device 3 arranged along the third direction presses on the main rib 2. When the pressing device 3 is subjected to an external force, it generates a force that tightens the main rib 2 along the second direction towards the pouring space, so as to realize the clamping and fixing of the formwork 1 without building a construction platform in the open caisson space, shorten the construction period and reduce potential safety hazards. One end of the tension device 4 of the present invention is provided with a spring end 41. After passing the spring end 41 through the formwork 1 to the outside, the spring end 41 is pulled back and opened to limit the reverse movement of the tension device 4, so as to realize the fixing of the tension device 4 on one side, without the need for operations on both sides, and improve work efficiency.

[0092] Certainly, for those skilled in the art, other structures and working principles of the quick-installation type open caisson construction formwork are understandable and achievable, and will not be elaborated in detail in the present invention.

[0093] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration purposes and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A quick-installing open caisson construction formwork, characterized in that, include: A template (1), wherein the template (1) is a plate-like structure, at least two of the templates (1) are erected in parallel along a first direction, and a sandwich between the two templates (1) forms a pouring space for pouring; A main rib (2), wherein the main rib (2) is a rod-shaped structure, and the main rib (2) is extended along a first direction and arranged outside the template (1), and two main ribs (2) arranged opposite to each other on both sides of the casting space form a clamping effect on the two templates (1); A clamping device (3), the clamping device (3) being arranged on the outside of the main rib (2) along the third direction, and the clamping device (3) generating a force on the main rib (2) to tighten toward the casting space along the second direction when subjected to an external force; A pulling device (4) passes through the template (1) on both sides of the casting space along the second direction, and generates a force on the template (1) to tighten toward the casting space along the second direction.

2. The quick-installing open caisson construction formwork according to claim 1, wherein The pressing device (3) comprises: A horizontal connecting member (31), one end of which is fixed to the outer side of the template (1), the main rib (2) is placed on the horizontal connecting member (31), and the other end of the horizontal connecting member (31) is provided with an opening (32); A rod body (33), wherein the rod body (33) passes through the opening (32); A vertebral body (34) is larger at the top and smaller at the bottom. The vertebral body (34) is arranged at a position on the rod body (33) where it is combined with the main rib (2). When the pressing device (3) is subjected to force, the vertebral body (34) fits the arc surface of the main rib (2) and moves downward to generate a pressing force on the main rib (2).

3. The quick-installing open caisson construction formwork according to claim 2, wherein The clamping device (3) comprises a rotating handle (35), and the rod body (33) is a multi-section telescopic structure. The rotating handle (35) is rotated to push the rod body (33) to extend through the internal gear meshing structure of the clamping device (3), thereby driving the vertebral body (34) to move downward.

4. A quick-installing open caisson construction formwork according to claim 3, characterized in that, A pulling hole (11) is provided on the plane of the template (1); a spring end (41) is provided at one end of the pulling device (4) and a screw (42) is provided at the other end; after the spring end (41) passes through the pulling hole (11) and is located outside the template (1), when the pulling device (4) is pulled back, the spring end (41) opens to limit the reverse movement of the pulling device (4).

5. A quick-installing open caisson construction formwork according to claim 4, characterized in that, The spring end (41) comprises a spring sheet (43) and a clamp (44); the clamp (44) can be stretched open to limit the reverse movement of the pulling device (4); and the spring sheet (43) is arranged between the clamp (44) and the main body of the pulling device (4) to prevent the clamp (44) from closing.

6. The quick-installing open caisson construction formwork according to claim 5, characterized in that, The template (1) is provided with a rib (12) on the outside, the rib (12) extends along the second direction, there are at least two ribs (12), and the two ribs (12) are arranged at intervals along the first direction.

7. The quick-installing open caisson construction formwork according to claim 6, characterized in that, The ribs (12) are provided with connection holes (13), and a plurality of the connection holes (13) are arranged at intervals along the third direction.

8. A quick-installing open caisson construction formwork according to claim 7, characterized in that It further includes a bolt (14). A plurality of the templates (1) are arranged adjacent to each other in the first direction, and the bolt (14) passes through the connection holes (13) of two adjacent templates (1) for fixation.

9. The quick-installing open caisson construction formwork according to claim 8, wherein, It further includes a template bottom support (5). The template bottom support (5) is L-shaped. One end of a plurality of the template bottom supports (5) is inserted into the concrete of the previous section of the caisson (6) to form a fixed support for the template (1).

10. A construction method of a quick-installation caisson construction formwork, characterized in that, It includes a quick-install caisson construction template as described in Claim 9 and the following steps: S1: Weld the pressing device (3) to the template (1) through the horizontal connecting member (31). Meanwhile, splice the number of template (1) blocks according to the on-site construction dimension requirements. Insert the bolt (14) into the connection hole (13) in the rib (12) between two adjacent templates (1) for fixation. After splicing, place the main rib (2) on the horizontal connecting member (31) between the template (1) and the pressing device (3); S2: Integrally place the spliced construction template at the bottom of the foundation pit or into the template bottom support (5) inserted during the construction of the previous section of the caisson (6). Then, insert the spring end (41) of the tension device (4) through the tension hole (11) of the template (1), and pull the tension device (4) in the reverse direction to open the spring end (41). Subsequently, an operator fixes the screw rod (42) at the other end of the tension device (4) with a nut; S3: Rotate the rotating handle (35) so that the cone (34) of the pressing device (3) moves downward, thereby pressing the main rib (2), and maintaining the pressing state through the internal gear meshing structure in the pressing device (3); S4: After checking and ensuring there is no error, pour concrete and vibrate it until it is dense. When the concrete strength reaches the form removal requirement, rotate the rotating handle (35) in the reverse direction so that the cone (34) of the pressing device (3) moves upward to relieve the pressure on the main rib (2). Remove the nut on the tension device (4), push the tension device (4) to make the spring end (41) bounce back, pull out the tension device (4), and integrally move out the construction template. If the construction of the next section of the caisson is required, insert a plurality of the template bottom supports (5) into the caisson concrete poured in this step; if the construction of the next section of the caisson is not required, there is no need to insert the template bottom supports (5); S5: Repeat steps S1 - S4 until the entire caisson construction is completed.

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