Universal formwork system for immersed tube prefabrication and using method thereof

Abstract

The invention relates to a general formwork system for immersed tube prefabrication and a using method thereof. A general formwork system for immersed tube prefabrication comprises a standard assembly and a plurality of replacement assemblies, the replacement assemblies are detachably connected to the standard assembly to form an immersed tube section formwork, and each part of each replacement assembly comprises at least two specifications. According to the general formwork system for immersed tube prefabrication, the replacement assembly is detachably connected to the standard assembly to form the immersed tube joint formwork and can be used for prefabrication and pouring of immersed tube joints, and each part of the replacement assembly comprises at least two specifications, so that the replacement assembly connected with the standard assembly can be replaced according to needs; and the standard assembly is of a universal structure and can be repeatedly used, and therefore a large amount of cost can be saved.

Description

Technical Field

[0001] The invention relates to the technical field of immersed tube segment casting, in particular to an immersed tube prefabricated universal template system and a use method thereof. Background Art

[0002] At present, the pipe segments of immersed tube tunnels in China are generally prefabricated in dry docks. The formwork system, as the main temporary facility, is specially designed. The size is generally fixed and cannot be adjusted. After the project is completed, it is rarely circulated and reused, resulting in a waste of resources.

[0003] Factory prefabrication is the general direction of future development of immersed tube tunnel segment prefabrication. It is necessary to seek modular design concepts, expand the applicability of the formwork system, and realize that one set of formwork system can be applied to several projects, which can greatly reduce project costs, reduce resource waste, and practice the green environmental protection concept of major projects in my country.

[0004] The factory prefabrication of immersed tube segments has put forward the demand for the design of a universal formwork system. However, the current standardization of immersed tube tunnel segment design is not high, and the cross-sectional dimensions of segments in different projects vary to varying degrees. It is difficult to achieve a set of formwork systems suitable for the prefabrication of segments with different cross-sectional dimensions using traditional design concepts. Summary of the invention

[0005] The purpose of the present invention is to provide a universal template system for immersed tube prefabrication and a method for using the template system and a method for using the template system for immersed tube prefabrication, in view of the problem that the template system used in the prefabrication of immersed tube segments in the prior art is not suitable for the prefabrication of segments with different cross-sectional sizes, thereby causing a huge waste of costs.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A universal prefabricated template system for immersed tubes comprises a standard component and a plurality of replacement components. The replacement components are detachably connected to the standard components to form immersed tube segment templates. Each part of the replacement components includes at least two specifications.

[0008] The universal prefabricated formwork system for immersed tubes of the present invention has a replacement component that can be detachably connected to the standard component to form an immersed tube segment formwork, which can be used for the prefabrication and casting of immersed tube segments. Each part of the replacement component includes at least two specifications, so that the replacement component connected to the standard component can be replaced according to needs, thereby being able to adapt to the prefabrication and casting of immersed tube segments of different specifications. The standard component is a universal structure and can be reused, thereby saving a lot of costs.

[0009] Preferably, the standard component includes an outer template standard component and an inner template standard component, the replacement component includes an outer template replacement component and an inner template replacement component, each part of the outer template replacement component and the inner template replacement component contains at least two specifications, the outer template standard component and the outer template replacement component can be detachably connected to form an outer template system for the immersed tube segment, and the inner template standard component and the inner template replacement component can be detachably connected to form an inner template system for the inner channel of the immersed tube segment.

[0010] The outer formwork system and the inner formwork system respectively adopt the form of standard components and replacement components, which has lower cost.

[0011] Preferably, the inner formwork standard assembly comprises a first wing truss, a standard inner formwork main truss and a second wing truss which are sequentially arranged in a transverse direction, an inner formwork is arranged on the upper side of the standard inner formwork main truss, and inner formwork is arranged on the outer sides of the first wing truss and the second wing truss, and the inner side surface of the first wing truss and the inner side surface of the second wing truss are respectively hinged to the outer side surface of the standard inner formwork main truss through hinge shafts at both ends of the oil cylinder;

[0012] The inner template replacement assembly comprises a first inner upper chamfer replacement piece, a second inner upper chamfer replacement piece, a first inner lower chamfer replacement piece, a second inner lower chamfer replacement piece and an inner upper chamfer connection replacement piece corresponding to the inner channel of the immersed tube segment, the upper side and outer side of the first inner upper chamfer replacement piece and the second inner upper chamfer replacement piece are provided with inner templates, the lower side and outer side of the first inner lower chamfer replacement piece and the second inner lower chamfer replacement piece are provided with inner templates, and the upper side of the inner upper chamfer connection replacement piece is provided with an inner template;

[0013] At least one side of the top of the standard inner mold main truss is detachably connected to the inner upper chamfer connection replacement part, the first inner upper chamfer replacement part can be detachably connected between the first side wing truss and the top of the standard inner mold main truss, the first inner upper chamfer replacement part is hinged to the standard inner mold main truss or the inner upper chamfer connection replacement part through a hinge shaft, the second inner upper chamfer replacement part can be detachably connected between the first side wing truss and the top of the standard inner mold main truss, the first inner upper chamfer replacement part is hinged to the standard inner mold main truss or the inner upper chamfer connection replacement part through a hinge shaft The inner mold main truss or the inner upper chamfer connection replacement part is hinged through a hinge shaft, the first inner lower chamfer replacement part is hinged to the lower part of the first wing truss through a hinge shaft, the first inner lower chamfer replacement part is hinged to the side of the standard inner mold main truss and the lower part of the first wing truss through an oil cylinder, the second inner lower chamfer replacement part is hinged to the lower part of the second wing truss through a hinge shaft, and the second inner lower chamfer replacement part is hinged to the side of the standard inner mold main truss and the lower part of the second wing truss through an oil cylinder;

[0014] The axial direction of the hinge shaft is longitudinal.

[0015] The inner formwork replacement assembly includes a first inner upper chamfer replacement part, a second inner upper chamfer replacement part, a first inner lower chamfer replacement part, a second inner lower chamfer replacement part and an inner upper chamfer connection replacement part corresponding to the inner channel of the immersed tube segment. The first inner upper chamfer replacement part and the second inner upper chamfer replacement part correspond to the two upper chamfers of the inner channel of the immersed tube segment, the first inner lower chamfer replacement part and the second inner lower chamfer replacement part correspond to the two lower chamfers of the inner channel of the immersed tube segment, and the different specifications of the inner upper chamfer connection replacement part can appropriately change the lateral width of the inner formwork system, thereby making the lateral range of the vertical support wider, which can adapt to the prefabrication and casting of immersed tube segments of different lateral sizes.

[0016] Preferably, both lateral sides of the top of the standard inner mold main truss can be detachably connected to the inner upper chamfered connection replacement part;

[0017] A first inner upper chamfer connection replacement part is provided between the first inner upper chamfer replacement part and the standard inner mold main truss, and the first inner upper chamfer replacement part and the first inner upper chamfer connection replacement part are hingedly connected via a hinge shaft.

[0018] A second inner upper chamfer connection replacement part is disposed between the second inner upper chamfer replacement part and the standard inner mold main truss, and the second inner upper chamfer replacement part and the second inner upper chamfer connection replacement part are hingedly connected via a hinge shaft.

[0019] The top lateral sides of the standard inner mold main truss can be detachably connected to the inner upper chamfered connection replacement parts, and the lateral width of both lateral sides can be changed by replacing the inner upper chamfered connection replacement parts of different sizes, and the adjustment range is wider.

[0020] Preferably, the first wing truss and the first inner upper chamfer connection replacement part are hinged via a hinge shaft, the outer side and the upper side of the first wing truss are both provided with inner templates, and the first inner upper chamfer replacement part is detachably connected to the outer side of the top of the first wing truss; the first wing truss and the first inner upper chamfer connection replacement part are hinged via a hinge shaft, that is, the first wing truss itself has a part adapted to the inner upper chamfer of the immersed tube segment, and the first inner upper chamfer replacement part is detachably connected to the part of the first wing truss adapted to the inner upper chamfer of the immersed tube segment to form an inner chamfer adapted to the new immersed tube segment, this method makes the first inner upper chamfer replacement part that needs to be replaced smaller in structure, better in design, and lower in cost;

[0021] and / or,

[0022] The second wing truss and the second inner upper chamfered connection replacement part are hinged via a hinge shaft, inner templates are provided on the outer side and upper side of the second wing truss, and the second inner upper chamfered connection replacement part is detachably connected to the outer side of the top of the first wing truss.

[0023] The second wing truss and the second inner upper chamfer connection replacement part are hinged by a hinge shaft, that is, the second wing truss itself has a part that adapts to the inner upper chamfer of the immersed tube segment. The second inner upper chamfer replacement part is detachably connected to the part of the second wing truss that adapts to the inner upper chamfer of the immersed tube segment to form an adaptation to the new inner chamfer of the immersed tube segment. This method makes the second inner upper chamfer replacement part that needs to be replaced smaller in structure, better designed, and lower in cost.

[0024] Preferably, the inner upper chamfer connection replacement part is an outward angle, and the inner upper chamfer connection replacement part includes a transverse part and an oblique part. The transverse part of the inner upper chamfer connection replacement part is detachably connected to the transverse part of the standard inner mold main truss, the oblique part of the inner upper chamfer connection replacement part is connected to the oblique part of the connecting section at the standard inner mold main truss, and the connecting section of the inner upper chamfer connection replacement part connected to the standard inner mold main truss has a reinforced structure.

[0025] The length of the transverse member of the inner upper chamfer connection replacement part can be selected to be different, which can change the transverse width of the inner formwork system, and thus the transverse range of the vertical support is wider, which can adapt to the prefabrication and pouring of immersed tube sections of different transverse sizes. The change in the length of the transverse member will change the support angle of the diagonal member, so that the diagonal member and the diagonal member of the connection section of the standard inner form main truss are not in the same straight line after being connected, which affects the support strength. The connection section where the inner upper chamfer connection replacement part connects to the standard inner form main truss is strengthened by strengthening the structure, which can ensure the support capacity and ensure that the new inner formwork system formed can be used safely.

[0026] Preferably, the inner formwork replacement assembly further comprises an extended main truss and a main truss transverse extension piece, the extended main truss is arranged between the first wing truss and the standard inner formwork main truss and / or between the second wing truss and the standard inner formwork main truss, the extended main truss is detachably connected to the side of the standard inner formwork main truss through the main truss transverse extension piece, and the top of the extended main truss is detachably connected to the top or inner upper chamfer connection replacement piece of the standard inner formwork main truss;

[0027] When an extended main truss is provided between the first side wing truss and the standard inner mold main truss, the connections between the first side wing truss, the first inner lower chamfer replacement part and the standard inner mold main truss can all be replaced to be connected to the corresponding extended main truss;

[0028] When an extended main truss is provided between the second side wing truss and the standard inner mold main truss, the connection between the second side wing truss, the second inner lower chamfer replacement part and the standard inner mold main truss can be replaced to be connected with the corresponding extended main truss;

[0029] When an extended main truss is provided between the first wing truss and the standard inner mold main truss and the first inner upper chamfer replacement part is connected to the standard inner mold main truss, the connection between the first inner upper chamfer replacement part and the standard inner mold main truss can be replaced to be connected to the corresponding extended main truss;

[0030] When an extended main truss is provided between the second wing truss and the standard inner mold main truss and a connection is provided between the second inner upper chamfer replacement part and the standard inner mold main truss, the connection between the second inner upper chamfer replacement part and the standard inner mold main truss can be replaced to be connected to the corresponding extended main truss.

[0031] The inner formwork replacement assembly also includes an extended main truss and a main truss transverse extension, so that the transverse width of the inner formwork system can be increased, and it can be applied to the prefabrication of immersed tube sections with a wider transverse width. For example, the original inner formwork system can only be applied to the prefabrication of 6-lane immersed tube sections. After adding the extended main truss and the main truss transverse extension, it can be applied to the prefabrication of 8-lane immersed tube sections.

[0032] Preferably, the outer formwork standard assembly comprises a side truss and a top tension truss, the inner side of the side truss is provided with an outer formwork, the bottom side of the top tension truss is provided with an outer formwork, the top tension truss is divided into two parts in the transverse direction, and the two parts of the top tension truss are detachably connected;

[0033] The outer template replacement assembly includes an outer chamfered section, the inner side of which is provided with an outer template, the outer chamfered section is detachably connected to the top of the side truss, and the outer chamfered section is detachably connected to the top surface tension truss. The detachable connection part is provided with an end plate, the plate end has a bolt hole for butt connection, and is also provided with a vertical shear plate, which is arranged on different surfaces of the rod and is vertically distributed, so as to ensure the stability of the shear force at the connection.

[0034] The section formed by the outer chamfer is detachably connected to the top of the side truss, so that the height of the outer formwork system and the outer chamfer can be changed, and it can be adapted to the prefabrication of higher immersed tube sections.

[0035] Preferably, the outer formwork replacement assembly further comprises an intermediate connecting section, the bottom side of which is provided with an outer formwork, and the intermediate connecting section is detachably connected between two parts of the top-facing tension truss.

[0036] Providing replaceable intermediate connecting sections can change the lateral width of the outer formwork system and adapt to the prefabrication of immersed tube sections of different widths.

[0037] A method for using a universal prefabricated template system for immersed tubes adopts the universal prefabricated template system for immersed tubes as described above, and connects parts of replacement components of different specifications to standard components according to the size and chamfer shape of immersed tube sections.

[0038] The method for using the universal prefabricated formwork system for immersed tubes described in the present invention can adapt to the prefabrication and casting of immersed tube segments of different specifications by replacing replacement components connected to standard components as needed. The standard components are universal structures and can be reused, thereby saving a lot of costs. The standard components do not need to be redesigned and produced, which can save formwork production time and improve the prefabrication efficiency of immersed tube segments.

[0039] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0040] 1. In the immersed tube prefabricated universal formwork system of the present invention, the replacement component can be detachably connected to the standard component to form an immersed tube segment formwork, which can be used for the prefabrication and casting of immersed tube segments, and each part of the replacement component includes at least two specifications, so that the replacement component connected to the standard component can be replaced according to needs, thereby being able to adapt to the prefabrication and casting of immersed tube segments of different specifications, and the standard component is a universal structure and can be reused, thereby saving a lot of costs.

[0041] 2. The immersed tube prefabrication universal formwork system of the present invention, the outer formwork system and the inner formwork system respectively adopt the form of matching standard components and replacement components, which has lower cost.

[0042] 3. The internal template replacement assembly of the immersed tube prefabrication universal formwork system of the present invention includes an inner upper chamfer connection replacement part. Different specifications of the inner upper chamfer connection replacement part can appropriately change the lateral width of the internal template system, thereby making the lateral range of the vertical support wider and being able to adapt to the prefabrication and pouring of immersed tube sections of different lateral sizes. The inner upper chamfer connection replacement parts can be detachably connected to both sides of the top of the standard inner form main truss, and the lateral width can be changed by replacing the inner upper chamfer connection replacement parts of different sizes on both sides, so the adjustment range is wider.

[0043] 4. In the universal prefabricated formwork system for immersed tubes described in the present invention, the first wing truss and the second wing truss themselves have a portion that is adapted to the inner upper chamfer of the immersed tube segment, and the first inner upper chamfer replacement part / the second inner upper chamfer replacement part is detachably connected to the portion of the first wing truss / the second wing truss that is adapted to the inner upper chamfer of the immersed tube segment to form an adaptation to the new inner chamfer of the immersed tube segment. In this way, the first inner upper chamfer replacement part / the second inner upper chamfer replacement part that needs to be replaced has a smaller structure, a better design, and a lower cost.

[0044] 5. The universal prefabricated formwork system for immersed tubes described in the present invention strengthens the connection section where the inner upper chamfered connection replacement part is connected to the standard inner form main truss by a reinforcing structure, which can ensure the supporting capacity and ensure that the new inner formwork system formed after the inner upper chamfered connection replacement part is replaced can be used safely, so that the lateral width of the inner formwork system can be changed.

[0045] 6. The universal template system for prefabricated immersed tubes of the present invention can increase the lateral width of the inner template system by lengthening the main trusses and the lateral extension members of the main trusses, and can be suitable for prefabrication of immersed tube sections with wider lateral widths.

[0046] 7. The method for using the universal prefabricated formwork system for immersed tubes of the present invention is to replace replacement components connected to standard components according to needs, thereby being adaptable to the prefabrication and casting of immersed tube segments of different specifications. The standard components are universal structures and can be reused, thereby saving a lot of costs. The standard components do not need to be redesigned and produced, which can save formwork production time and improve the prefabrication efficiency of immersed tube segments. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic diagram of the use of the immersed tube prefabrication universal formwork system Figure 1 ;

[0048] Figure 2 This is a schematic diagram of the structure of the standard components of the outer formwork of the immersed tube prefabricated universal formwork system Figure 1 ;

[0049] Figure 3 This is a schematic diagram of the structure of the outer formwork system of the immersed tube prefabrication universal formwork system Figure 1 ;

[0050] Figure 4 This is a schematic diagram of the use of the inner formwork system of the immersed tube prefabrication universal formwork system Figure 1 ;

[0051] Figure 5 This is a schematic diagram of the structure of the standard components of the inner formwork of the immersed tube prefabricated universal formwork system Figure 1 ;

[0052] Figure 6This is a schematic diagram of the structure of the inner formwork replacement component of the immersed tube prefabricated universal formwork system Figure 1 ;

[0053] Figure 7 This is a schematic diagram of the structure of the inner formwork system of the immersed tube prefabrication universal formwork system Figure 1 ;

[0054] Figure 8 is an enlarged schematic diagram of a second inner upper chamfer connection replacement part;

[0055] Fig. 9 This is a schematic diagram of the use of the immersed tube prefabrication universal formwork system Figure 2 ;

[0056] Fig.10 This is a schematic diagram of the structure of the standard components of the outer formwork of the immersed tube prefabricated universal formwork system Figure 2 ;

[0057] Fig.11 This is a schematic diagram of the structure of the outer formwork system of the immersed tube prefabrication universal formwork system Figure 2 ;

[0058] Fig.12 This is a schematic diagram of the use of the inner formwork system of the immersed tube prefabrication universal formwork system Figure 2 ;

[0059] Fig.13 This is a schematic diagram of the structure of the standard components of the inner formwork of the immersed tube prefabricated universal formwork system Figure 2 ;

[0060] Fig.14 This is a schematic diagram of the structure of the inner formwork replacement component of the immersed tube prefabricated universal formwork system Figure 2 ;

[0061] Fig.15 This is a schematic diagram of the structure of the inner formwork system of the immersed tube prefabrication universal formwork system Figure 2 ;

[0062] Fig.16 This is a schematic diagram of the use of the immersed tube prefabrication universal formwork system Figure 3 ;

[0063] Fig.17 This is a schematic diagram of the structure of the standard components of the outer formwork of the immersed tube prefabricated universal formwork system Figure 3 ;

[0064] Fig.18 This is a schematic diagram of the structure of the outer formwork system of the immersed tube prefabrication universal formwork system Figure 3 ;

[0065] Fig.19 This is a schematic diagram of the use of the inner formwork system of the immersed tube prefabrication universal formwork system Figure 3 ;

[0066] Fig. 20 This is a schematic diagram of the structure of the inner formwork system of the immersed tube prefabrication universal formwork system Figure 3 ;

[0067] Fig.21 This is a schematic diagram of the structure of the standard components of the inner formwork of the immersed tube prefabricated universal formwork system Figure 3 ;

[0068] Fig. 22 This is a schematic diagram of the structure of the inner formwork replacement component of the immersed tube prefabricated universal formwork system Figure 3 ;

[0069] Fig.23 It is a strengthening setting of the detachable connection of the angle connecting rod;

[0070] Fig.24 It is a strengthening setting of the detachable connection of the flat connecting rod;

[0071] Fig.25 It is a reinforcement setting of the detachable connection of the diagonal connecting rod.

[0072] Icons: 111-side truss; 112-top tension truss; 121-first side wing truss; 122-second side wing truss; 123-standard inner mold main truss; 211-outer chamfered joint; 212-middle connection joint; 221-first inner upper chamfer replacement; 222-second inner upper chamfer replacement; 223-first inner lower chamfer replacement; 224-second inner lower chamfer replacement; 225-first inner upper chamfer connection replacement; 226-second Replacement part for the inner upper chamfer connection; 227- transverse extension of the main truss; 228-extended main truss; 31-external formwork system; 311-external formwork; 32-internal formwork system; 321-internal formwork; 4-cylinder; 5-inner channel of the immersed tube section; 6-connecting section; 61-flange connection structure; 71-first shear plate; 72-second shear plate; 73-end plate; 74-bolt hole; 75-corner reinforcement plate; 81-angular connecting rod; 82-flat connecting rod; 83-oblique connecting rod. DETAILED DESCRIPTION

[0073] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0074] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0075] Example 1

[0076] This embodiment provides a universal template system for prefabricating immersed tubes. Figure 1-Figure 22 , including a standard component and a plurality of replacement components, wherein the replacement components are detachably connected to the standard component to form a immersed tube segment template, and each part of the replacement component contains at least two specifications.

[0077] In this scheme, a universal prefabricated formwork system for immersed tubes is required for prefabrication of immersed tube segments, which includes an outer formwork system 31 and an inner formwork system 32. The inner formwork system 32 includes a supporting structure located on the inside and an inner formwork 321 located on the outside. The outer formwork system 31 includes a supporting structure located on the outside and an outer formwork 311 located on the inside. The space between the inner formwork 321 and the outer formwork 311 is a concrete pouring space for the immersed tube segments. Different immersed tube segments have different lateral dimensions, outer chamfers, inner chamfers and other dimensions. Therefore, it is necessary to adjust the corresponding parts of the formwork system to adapt to the corresponding parts of different immersed tube segments, and at the same time, it is necessary to ensure the safety of prefabrication of the immersed tube segments.

[0078] The universal prefabricated formwork system for immersed tubes described in the present invention has a replacement component that is detachably connected to the standard component to form an immersed tube segment formwork, which can be used for prefabricated casting of immersed tube segments, and each part of the replacement component includes at least two specifications. The parts included in the replacement component can be the outer chamfer of the outer formwork system 31, the inner chamfer of the inner formwork system 32, and the lateral dimensional changes and vertical dimensional changes of the outer formwork system 31, the lateral dimensional changes and vertical dimensional changes of the inner formwork system 32, etc. Because the support system of the inner formwork system 32 generally involves vertical height adjustment, the support system height of the inner formwork system 32 can be adjusted, so that the replacement component connected to the standard component can be replaced according to needs, thereby being able to adapt to the prefabricated casting of immersed tube segments of different specifications, and the standard component is a universal structure and can be reused, thereby saving a lot of costs.

[0079] In this embodiment, the standard components include an outer template standard component and an inner template standard component, the replacement components include an outer template replacement component and an inner template replacement component, each part of the outer template replacement component and the inner template replacement component includes at least two specifications, the outer template standard component and the outer template replacement component are detachably connected to form an outer template system 31 of the immersed tube segment, and the inner template standard component and the inner template replacement component are detachably connected to form an inner template system 32 of the inner channel 5 of the immersed tube segment. The outer template system 31 and the inner template system 32 are respectively in the form of a standard component and a replacement component, which is lower in cost.

[0080] like Figure 1 , Fig. 9 and Fig.16As shown, there are three usage states of the immersed tube prefabrication universal formwork system, the left and right sides are horizontal, and the inside and outside directions are longitudinal. The inner formwork system 32 in the inner channel 5 of the immersed tube segment on the left is in a casting state, and is tightly supported by the inner wall of the immersed tube segment. The inner formwork system 32 on the right is in a demoulding state, so that the inner formwork system 32 can be moved longitudinally, so that the immersed tube segment can be cast in sections longitudinally. The method of longitudinally moving the inner formwork system 32 is the existing technology, which is guided by rails and pushed to move longitudinally under the action of hydraulic power.

[0081] like Figure 2-Figure 3 , Figure 10-11 , Figure 17-Figure 18 As shown, the standard outer formwork component includes a side truss 111 and a top tension truss 112, the inner side of the side truss 111 is provided with an outer formwork 311, the bottom side of the top tension truss 112 is provided with an outer formwork 311, and the top tension truss 112 is divided into two parts in the horizontal direction, and the two parts of the top tension truss 112 are detachably connected, that is, the two parts of the top tension truss 112 are connected to form a whole, so that the top outer formwork 311 is complete and can be used as the outer top formwork for casting the basic immersed tube section.

[0082] The outer formwork replacement assembly includes an outer chamfered section 211, an outer formwork 311 is arranged inside the outer chamfered section 211, and the outer chamfered section 211 is detachably connected to the top of the side truss 111, and can change the height and outer chamfer of the outer formwork system 31, and can adapt to the prefabrication of higher immersed tube sections; the outer chamfered section 211 is detachably connected to the top surface tension truss 112, and can ensure the integrity of the outer formwork 311. In other words, the support system of the outer formwork system 31 can change the vertical height through the outer chamfered section 211, and at the same time, can form the shape and size of the corresponding outer chamfer of the immersed tube section through the outer chamfered section 211.

[0083] like Figure 3 , Fig.11 and Fig.18As shown, the outer formwork replacement assembly may also include an intermediate connection joint 212, the bottom side of which is provided with an outer formwork 311, and the intermediate connection joint 212 is detachably connected between the two parts of the top-facing tension truss 112, and providing a replacement intermediate connection joint 212 can change the lateral width of the outer formwork system 31, and the size of the intermediate connection joint 212 can be selected, and it connects the two lateral parts of the top-facing tension truss 112 together to form a complete top outer formwork 311, thereby being able to adapt to the prefabrication of immersed tube sections of different widths. The above-mentioned detachable connection methods are all conventional connection methods, such as bolt connection. And the intermediate connection joint 212 is set between the two lateral parts of the top-facing tension truss 112, which can ensure the support balance on both sides and facilitate the adjustment of the prefabrication of immersed tube sections of different widths. The use of the outer chamfered joint 211 can reduce the size of the component to be replaced, save costs, and improve construction efficiency.

[0084] like Figure 4 , Fig.12 and Fig.19 As shown, the usage relationship between the internal template system 32 and the channel 5 inside the immersed tube segment is demonstrated.

[0085] In this embodiment, Figure 5 As shown, the inner formwork standard assembly includes a first wing truss 121, a standard inner formwork main truss 123, and a second wing truss 122 arranged in sequence along the transverse direction. An inner formwork 321 is provided on the upper side of the standard inner formwork main truss 123. The outer sides of the first wing truss 121 and the second wing truss 122 are both provided with inner formwork 321. The inner side surface of the first wing truss 121 and the inner side surface of the second wing truss 122 can be hinged to the outer side surface of the standard inner formwork main truss 123 through hinge shafts at both ends of the oil cylinder 4. The oil cylinder 4 has longitudinal hinge shafts at both ends, so that the inner side surface of the first wing truss 121 and the second wing truss 122 can be extended away from or shortened to the first wing truss 121.

[0086] like Figure 6 As shown, the inner template replacement assembly comprises a first inner upper chamfer replacement piece 221, a second inner upper chamfer replacement piece 222, a first inner lower chamfer replacement piece 223, a second inner lower chamfer replacement piece 224 and an inner upper chamfer connection replacement piece corresponding to the inner channel 5 of the immersed tube segment, the upper side and outer side of the first inner upper chamfer replacement piece 221 and the second inner upper chamfer replacement piece 222 are provided with an inner template 321, the lower side and outer side of the first inner lower chamfer replacement piece 223 and the second inner lower chamfer replacement piece 224 are provided with an inner template 321, and the upper side of the inner upper chamfer connection replacement piece is provided with an inner template 321;

[0087] At least one side of the top of the standard inner mold main truss 123 can be detachably connected to the inner upper chamfered connection replacement part, that is, Figure 6 In the embodiment, there may be only one first inner upper chamfer connection replacement part 225 or only one second inner upper chamfer connection replacement part 226. In this case, the other one should be an integral structure with the standard inner mold main truss 123, that is, a part of the standard component; of course, it can also be Figure 6 If both the first inner upper chamfer connection replacement part 225 and the second inner upper chamfer connection replacement part 226 exist, the first inner upper chamfer connection replacement part 225 and the second inner upper chamfer connection replacement part 226 can be replaced with different specifications. The different specifications of the inner upper chamfer connection replacement parts can appropriately change the lateral width of the inner formwork system 32, thereby the lateral range of the vertical support is wider, and it can adapt to the precast casting of immersed tube sections of different lateral sizes.

[0088] like Figure 6 and Figure 7 As shown, the inner upper chamfer connection replacement part is an outward angle shape, and the inner upper chamfer connection replacement part includes a transverse part and an oblique part. The transverse part of the inner upper chamfer connection replacement part can be detachably connected to the transverse part of the standard inner mold main truss 123, and the oblique part of the inner upper chamfer connection replacement part is connected to the oblique part connected to the connection section 6 at the standard inner mold main truss 123. The inner upper chamfer connection replacement part has a reinforced structure for connecting the connection section 6 at the standard inner mold main truss 123. The length of the transverse part of the inner upper chamfer connection replacement part can be selected to be different, thereby changing the transverse width of the inner formwork system 32, thereby making the transverse range of the vertical support wider, and being able to adapt to the prefabrication and casting of immersed tube sections of different transverse sizes. The change in the length of the horizontal member will change the supporting angle of the diagonal member, which will cause the diagonal member to be not in the same straight line after being connected to the diagonal member of the connecting node 6 of the standard inner mold main truss 123, thereby affecting the supporting strength. The connecting node 6 where the inner upper chamfered connection replacement part connects the standard inner mold main truss 123 is strengthened by strengthening the structure, which can ensure the supporting capacity and ensure that the newly formed inner formwork system 32 can be used safely.

[0089] The top lateral sides of the standard inner form main truss 123 can be detachably connected to the inner upper chamfer connection replacement parts, and the lateral width can be changed by replacing the inner upper chamfer connection replacement parts of different sizes on both lateral sides, and the adjustment range is wider. The inner upper chamfer connection replacement parts can adjust the lateral size of the inner formwork system by 3m-4m.

[0090] like Figure 5-Figure 7As shown, the first inner upper chamfer replacement part 221 can be detachably connected between the first wing truss 121 and the top of the standard inner mold main truss 123, and the first inner upper chamfer replacement part 221 is hinged to the standard inner mold main truss 123 or the inner upper chamfer connection replacement part through a hinge axis, that is, when there is a first inner upper chamfer connection replacement part 225, the first inner upper chamfer replacement part 221 is hinged to the first inner upper chamfer connection replacement part 225 through a hinge axis, and the axial direction of the hinge axis is longitudinal.

[0091] The second inner upper chamfer replacement part 222 can be detachably connected between the first wing truss 121 and the top of the standard inner mold main truss 123, and the first inner upper chamfer replacement part 221 is hinged to the standard inner mold main truss 123 or the inner upper chamfer connection replacement part through a hinge axis, that is, when there is a second inner upper chamfer connection replacement part 226, the first inner upper chamfer replacement part 221 is hinged to the second inner upper chamfer connection replacement part 226 through a hinge axis, and the axial direction of the hinge axis is longitudinal.

[0092] In this solution, the first inner upper chamfer replacement part 221 and the second inner upper chamfer replacement part 222 correspond to the two upper chamfers of the inner channel 5 of the immersed tube segment. By replacing the first inner upper chamfer replacement part 221 and the second inner upper chamfer replacement part 222 of different specifications, the first inner upper chamfer replacement part 221 and the second inner upper chamfer replacement part 222 can be used. Figure 6 The form of the second inner upper chamfer replacement part 222 can adapt to the shape and size of the inner upper chamfer of the immersed tube segment, and can appropriately adjust the vertical height and lateral width of the inner template system 32.

[0093] In another embodiment, the first inner upper chamfer replacement part 221 and the second inner upper chamfer replacement part 222 may also be Fig.14 In the form of the first inner upper chamfer replacement part 221 and the second inner upper chamfer replacement part 222, in this form, as Figure 13-Figure 15As shown, the first wing truss 121 and the first inner upper chamfer connection replacement part 225 are hinged by a hinge shaft, and the outer side and the upper side of the first wing truss 121 are provided with inner templates 321, and the first inner upper chamfer replacement part 221 is detachably connected to the outer side of the top of the first wing truss 121; that is, the first wing truss 121 itself has a part that adapts to the inner upper chamfer of the immersed tube segment, that is, the first wing truss 121 is detachably hinged to the top of the standard inner mold main truss 123 or the first inner upper chamfer connection replacement part 225, and the first inner upper chamfer replacement part 221 is detachably connected to the part of the first wing truss 121 that adapts to the inner upper chamfer of the immersed tube segment to form an inner chamfer that adapts to the new immersed tube segment. In this way, the first inner upper chamfer replacement part 221 that needs to be replaced has a smaller structure, better design, and lower cost. The second wing truss 122 and the second inner upper chamfer connection replacement part 226 are hinged by a hinge shaft, and the outer side and upper side of the second wing truss 122 are provided with inner templates 321, and the second inner upper chamfer replacement part 222 is detachably connected to the outer side of the top of the first wing truss 121; that is, the second wing truss 122 itself has a part that adapts to the inner upper chamfer of the immersed tube segment, that is, the second wing truss 122 is detachably hinged to the top of the standard inner mold main truss 123 or the second inner upper chamfer connection replacement part 226, and the second inner upper chamfer replacement part 222 is detachably connected to the part of the second wing truss 122 that adapts to the inner upper chamfer of the immersed tube segment to form an inner chamfer that adapts to the new immersed tube segment. In this way, the second inner upper chamfer replacement part 222 that needs to be replaced has a smaller structure, better design, and lower cost.

[0094] Of course, the first inner upper chamfer replacement part 221 and the second inner upper chamfer replacement part 222 can also be Figure 20-Figure 22 In the form, the side wing truss on one side itself has a portion that is adapted to the chamfered inner side of the immersed tube segment, while the side wing truss on the other side does not have a portion that is adapted to the chamfered inner side of the immersed tube segment.

[0095] The first inner lower chamfer replacement part 223 is hinged to the lower part of the first wing truss 121 through a hinge shaft. The first inner lower chamfer replacement part 223 is hinged to the side of the standard inner mold main truss 123 and the lower part of the first wing truss 121 through the cylinder 4. The axial direction of the hinge shaft is longitudinal. The demoulding function on the side where the first wing truss 121 is located is realized by the cylinder 4.

[0096] The second inner lower chamfer replacement part 224 is hinged to the lower part of the second wing truss 122 through a hinge axis. The second inner lower chamfer replacement part 224 is hinged to the side of the standard inner mold main truss 123 and the lower part of the second wing truss 122 through the cylinder 4. The axial direction of the hinge axis is longitudinal. The demoulding function on the side where the second wing truss 122 is located is realized by the cylinder 4.

[0097] In this embodiment, the first inner lower chamfer replacement part 223 and the second inner lower chamfer replacement part 224 correspond to the two inner lower chamfers adapted to the inner channel 5 of the immersed tube section. The first inner lower chamfer replacement part 223 and the second inner lower chamfer replacement part 224 can be adopted. Figure 6 The form in the embodiment can adapt to the shape and size of the lower chamfer on the inner side of the immersed tube segment by replacing different specifications, and can appropriately adjust the vertical height and lateral width of the inner template system 32.

[0098] In this embodiment, from Figure 1-Figure 7 and Figure 9-Figure 15 It can be seen from the comparison that the replacement components connected with the standard components can be replaced according to the needs, so as to adapt to the prefabrication and casting of immersed tube segments of different specifications, and the standard components are universal structures and can be reused, which can save a lot of costs. Both the standard components and the replacement components are prefabricated components with high precision. After the replacement components are replaced, they can be accurately connected to form a new immersed tube segment prefabricated template system.

[0099] Example 2

[0100] This embodiment provides a universal template system for prefabricating immersed tubes. Based on the embodiment 1, Figure 16-Figure 22 As shown, the inner formwork replacement assembly further includes an extended main truss 228 and a main truss transverse extension piece 227, the extended main truss 228 is arranged between the first wing truss 121 and the standard inner formwork main truss 123 and / or between the second wing truss 122 and the standard inner formwork main truss 123, that is, the extended main truss 228 can be arranged between the first wing truss 121 and the standard inner formwork main truss 123, and the extended main truss 228 can also be arranged between the second wing truss 122 and the standard inner formwork main truss 123, the extended main truss 228 is detachably connected to the side of the standard inner formwork main truss 123 through the main truss transverse extension piece 227, and the top of the extended main truss 228 is detachably connected to the top or inner upper chamfer connection replacement piece of the standard inner formwork main truss 123;

[0101] When an extended main truss 228 is provided between the first wing truss 121 and the standard inner mold main truss 123, the connections between the first wing truss 121, the first inner lower chamfer replacement part 223 and the standard inner mold main truss 123 can all be replaced to be connected to the corresponding extended main truss 228. Figure 7 or Fig.15 Change to Fig. 20 ;

[0102] When an extended main truss 228 is provided between the second side wing truss 122 and the standard inner mold main truss 123, the connection between the second side wing truss 122 and the second inner lower chamfer replacement part 224 and the standard inner mold main truss 123 can be replaced to be connected to the corresponding extended main truss 228. Figure 7 or Fig.15 Change to Fig. 20 ;

[0103] When an extended main truss 228 is provided between the first wing truss 121 and the standard inner mold main truss 123 and a connection is provided between the first inner upper chamfer replacement part 221 and the standard inner mold main truss 123, the connection between the first inner upper chamfer replacement part 221 and the standard inner mold main truss 123 can be replaced to be connected to the corresponding extended main truss 228;

[0104] When an extended main truss 228 is provided between the second side wing truss 122 and the standard inner mold main truss 123 and a connection is provided between the second inner upper chamfer replacement part 222 and the standard inner mold main truss 123, the connection between the second inner upper chamfer replacement part 222 and the standard inner mold main truss 123 can be replaced to be connected to the corresponding extended main truss 228, such as Figure 7 Change to Fig. 20 .

[0105] The inner formwork replacement assembly can increase the lateral width of the inner formwork system 32 by lengthening the main truss 228 and the main truss transverse extension 227, and can be applied to the prefabrication of immersed tube sections with a wider lateral width. For example, the original inner formwork system 32 can only be applied to the prefabrication of 6-lane immersed tube sections, but after adding the lengthened main truss 228 and the main truss transverse extension 227, it can be applied to the prefabrication of 8-lane immersed tube sections.

[0106] The universal template system for prefabricated immersed tubes adopts a modular design concept. Its structure consists of "standard components + replacement components", and the universality rate can reach more than 70%. By investigating the cross-sectional forms of immersed tubes at home and abroad, the indicators established basically cover most of the immersed tube size requirements. It is suitable for the prefabrication of immersed tube segments with two-way 6-lane and 8-lane, and is basically suitable for segments with a height of 8m to 11m and a width of 28m to 34m; for two-way 8-lane, it is basically suitable for segments with a height of 8m to 11m and a width of 35m to 40m. It is suitable for the prefabrication of segments with a lane inner cavity width of 11.5m to 14m and a height of 6m to 7.5m. Applicability of segment chamfers: For the outer upper chamfer, it is suitable for chamfers within 1.6m×1.6m; for the inner upper chamfer, it is suitable for chamfers within 2.0m×1.0m; corresponding to the outer and inner lower chamfers, it is basically suitable for all forms of chamfers. It can also be used for immersed tube segments with variable cross-sections. For example, if there is a variable width section, the tube segment section changes from a two-way 6-lane section to a two-way 8-lane section. For a typical two-way 6-lane section, the Chebei Tunnel template system can be universally used by replacing components, with a universal rate of more than 80%. For a typical two-way 8-lane section with a variable width section, the Chebei Tunnel template system can be universally used by replacing components, with a universal rate of more than 60%. The overall universal rate can reach more than 70%. The present invention proposes a universal template system for the prefabrication of integral immersed tube segments. Through the modular design of the template system, a set of template systems can be used for the prefabrication of immersed tube segments with different cross-sectional sizes, with a universal rate of more than 70%, greatly reducing engineering costs.

[0107] Example 3

[0108] This embodiment provides a method for using a universal prefabricated formwork system for immersed tubes, using the universal prefabricated formwork system for immersed tubes as described in Embodiment 1 or Embodiment 2, and using different specifications of replacement components to connect to standard components according to the size and chamfer shape of the immersed tube segments.

[0109] The method for using the universal prefabricated formwork system for immersed tubes described in the present embodiment is to replace replacement components connected to standard components according to needs, thereby being adaptable to the prefabrication and casting of immersed tube segments of different specifications. The standard components are universal structures and can be reused, thereby saving a lot of costs. The standard components do not need to be redesigned and produced, which can save formwork production time and improve the prefabrication efficiency of immersed tube segments.

[0110] For the above embodiments 1-3, Figure 23-Figure 25 The detachable connections can be divided into detachable connections of angle connecting rods 81 , detachable connections of flat connecting rods 82 and detachable connections of oblique connecting rods 83 .

[0111] like Fig.23As shown, the angle connecting rod 81 includes a flat connecting rod 82 and an oblique connecting rod 83. The flat connecting rod 82 and the oblique connecting rod 83 are fixedly connected to form an angle structure. A corner reinforcement plate 75 is provided at the connection between the flat connecting rod 82 and the oblique connecting rod 83.

[0112] like Fig.23 and 24 As shown, the flat connecting rod 82 is an I-beam structure, and an end plate 73 is provided on the end face of the detachable connection of the flat connecting rod 82. A plurality of bolt holes 74 are provided on the end plate 73, and a connection is formed by bolts passing through the bolt holes 74 of two detachable connecting parts; and a first shear plate 71 is provided on the web of the I-beam structure, and the first shear plate 71 vertically connects the web of the I-beam structure and the end plate 73 at the same time; and a second shear plate 72 is provided on the outer side of the flange plate of the I-beam structure, and the second shear plate 72 vertically connects the flange plate of the I-beam structure and the end plate 73 at the same time. The stability of the detachable connection is ensured by the reinforcement of the first shear plate 71 and the second shear plate 72 in two vertical directions.

[0113] Similarly, if Fig.23 and Fig.25 As shown, the diagonal connecting rod 83 is an I-beam structure, and an end plate 73, a first shear plate 71 and a second shear plate 72 are also provided on the diagonal connecting rod 83. Bolt holes 74 are provided on the end plate 73 to form a bolt connection, and the stability of the detachable connection is ensured by reinforcing the first shear plate 71 and the second shear plate 72 in two vertical directions.

[0114] 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 protection scope of the present invention.

Claims

1. A universal template system for immersed tube prefabrication, characterized in that: It comprises a standard component and a plurality of replacement components. The replacement components are detachably connected to the standard component to form a immersed tube segment template. Each part of the replacement component contains at least two specifications.

2. The immersed tube prefabrication universal formwork system according to claim 1 is characterized in that: The standard component includes an outer template standard component and an inner template standard component, the replacement component includes an outer template replacement component and an inner template replacement component, each part of the outer template replacement component and the inner template replacement component includes at least two specifications, the outer template standard component and the outer template replacement component are detachably connected to form an outer template system (31) of the immersed tube segment, and the inner template standard component and the inner template replacement component are detachably connected to form an inner template system (32) of the inner channel (5) of the immersed tube segment.

3. The immersed tube prefabrication universal formwork system according to claim 2 is characterized in that: The inner formwork standard component comprises a first wing truss (121), a standard inner formwork main truss (123) and a second wing truss (122) which are sequentially arranged in a transverse direction; an inner formwork (321) is provided on the upper side of the standard inner formwork main truss (123); inner formworks (321) are provided on the outer sides of the first wing truss (121) and the second wing truss (122); the inner side surface of the first wing truss (121) and the inner side surface of the second wing truss (122) are respectively hinged to the outer side surface of the standard inner formwork main truss (123) through hinge shafts at both ends of an oil cylinder (4); The inner template replacement assembly comprises a first inner upper chamfer replacement piece (221), a second inner upper chamfer replacement piece (222), a first inner lower chamfer replacement piece (223), a second inner lower chamfer replacement piece (224) and an inner upper chamfer connection replacement piece corresponding to the inner channel (5) of the immersed tube segment; the upper side and outer side of the first inner upper chamfer replacement piece (221) and the second inner upper chamfer replacement piece (222) are provided with inner templates (321); the lower side and outer side of the first inner lower chamfer replacement piece (223) and the second inner lower chamfer replacement piece (224) are provided with inner templates (321); and the upper side of the inner upper chamfer connection replacement piece is provided with an inner template (321); At least one side of the top of the standard inner mold main truss (123) is detachably connected to the inner upper chamfer connection replacement part, the first inner upper chamfer replacement part (221) can be detachably connected between the first wing truss (121) and the top of the standard inner mold main truss (123), the first inner upper chamfer replacement part (221) is hinged to the standard inner mold main truss (123) or the inner upper chamfer connection replacement part through a hinge shaft, the second inner upper chamfer replacement part (222) can be detachably connected between the first wing truss (121) and the top of the standard inner mold main truss (123), the first inner upper chamfer replacement part (221) is hinged to the standard inner mold main truss (123) or the inner upper chamfer connection replacement part through a hinge shaft. 123) or the inner upper chamfer connection replacement part is hinged through a hinge shaft, the first inner lower chamfer replacement part (223) is hinged to the lower part of the first wing truss (121) through a hinge shaft, the first inner lower chamfer replacement part (223) is hinged to the side of the standard inner mold main truss (123) and the lower part of the first wing truss (121) through a cylinder (4), the second inner lower chamfer replacement part (224) is hinged to the lower part of the second wing truss (122) through a hinge shaft, and the second inner lower chamfer replacement part (224) is hinged to the side of the standard inner mold main truss (123) and the lower part of the second wing truss (122) through a cylinder (4); The axial direction of the hinge shaft is longitudinal.

4. The immersed tube prefabrication universal formwork system according to claim 3 is characterized in that: Both lateral sides of the top of the standard inner mold main truss (123) can be detachably connected to the inner upper chamfered connection replacement part; A first inner upper chamfer connection replacement part (225) is disposed between the first inner upper chamfer replacement part (221) and the standard inner mold main truss (123). The first inner upper chamfer replacement part (221) and the first inner upper chamfer connection replacement part (225) are hingedly connected via a hinge shaft. A second inner upper chamfer connection replacement part (226) is provided between the second inner upper chamfer replacement part (222) and the standard inner mold main truss (123), and the second inner upper chamfer replacement part (222) and the second inner upper chamfer connection replacement part (226) are hingedly connected via a hinge shaft.

5. The immersed tube prefabrication universal formwork system according to claim 4, characterized in that: The first side wing truss (121) and the first inner upper chamfered connection replacement part (225) are hingedly connected via a hinge shaft, the outer side and upper side of the first side wing truss (121) are both provided with inner templates (321), and the first inner upper chamfered connection replacement part (221) is detachably connected to the outer side of the top of the first side wing truss (121); and / or, The second wing truss (122) and the second inner upper chamfered connection replacement part (226) are hinged via a hinge shaft, and inner templates (321) are provided on the outer side and upper side of the second wing truss (122). The second inner upper chamfered connection replacement part (222) is detachably connected to the outer side of the top of the first wing truss (121).

6. The immersed tube prefabrication universal formwork system according to claim 3 is characterized in that: The inner upper chamfered connection replacement part is an outward angled shape, and the inner upper chamfered connection replacement part includes a transverse part and an oblique part. The transverse part of the inner upper chamfered connection replacement part can be detachably connected to the transverse part of the standard inner mold main truss (123), and the oblique part of the inner upper chamfered connection replacement part is connected to the oblique part connected to the connection node (6) at the standard inner mold main truss (123). The connection node (6) at the inner upper chamfered connection replacement part connected to the standard inner mold main truss (123) has a reinforced structure.

7. The immersed tube prefabrication universal formwork system according to claim 3 is characterized in that: The inner formwork replacement assembly also includes an extended main truss (228) and a main truss transverse extension piece (227), wherein the extended main truss (228) is arranged between the first wing truss (121) and the standard inner formwork main truss (123) and / or between the second wing truss (122) and the standard inner formwork main truss (123), wherein the extended main truss (228) is detachably connected to the side of the standard inner formwork main truss (123) through the main truss transverse extension piece (227), and the top of the extended main truss (228) is detachably connected to the top or inner upper chamfer connection replacement piece of the standard inner formwork main truss (123); When an extended main truss (228) is provided between the first wing truss (121) and the standard inner mold main truss (123), the connections between the first wing truss (121), the first inner lower chamfer replacement part (223) and the standard inner mold main truss (123) can all be replaced to be connected to the corresponding extended main truss (228); When an extended main truss (228) is provided between the second side wing truss (122) and the standard inner mold main truss (123), the connection between the second side wing truss (122), the second inner lower chamfer replacement part (224) and the standard inner mold main truss (123) can be replaced to be connected to the corresponding extended main truss (228); When an extended main truss (228) is provided between the first wing truss (121) and the standard inner mold main truss (123), and a connection is provided between the first inner upper chamfer replacement part (221) and the standard inner mold main truss (123), the connection between the first inner upper chamfer replacement part (221) and the standard inner mold main truss (123) can be replaced to be connected to the corresponding extended main truss (228); When an extended main truss (228) is provided between the second wing truss (122) and the standard inner mold main truss (123) and a connection is provided between the second inner upper chamfer replacement part (222) and the standard inner mold main truss (123), the connection between the second inner upper chamfer replacement part (222) and the standard inner mold main truss (123) can be replaced to be connected to the corresponding extended main truss (228).

8. The universal prefabricated template system for immersed tubes according to any one of claims 2 to 7, characterized in that: The external formwork standard assembly comprises a side truss (111) and a top tension truss (112); an external formwork (311) is provided on the inner side of the side truss (111); an external formwork (311) is provided on the bottom side of the top tension truss (112); the top tension truss (112) is divided into two parts in the transverse direction; and the two parts of the top tension truss (112) are detachably connected; The outer template replacement assembly comprises an outer chamfered node (211), an outer template (311) is arranged on the inner side of the outer chamfered node (211), the outer chamfered node (211) is detachably connected to the top of the side truss (111), and the outer chamfered node (211) is detachably connected to the top tension truss (112).

9. The immersed tube prefabrication universal formwork system according to claim 8, characterized in that: The outer formwork replacement assembly further comprises an intermediate connection joint (212), the bottom side of which is provided with an outer formwork (311), and the intermediate connection joint (212) is detachably connected between two parts of the top-facing tension truss (112).

10. A method for using a universal template system for immersed tube prefabrication, characterized in that: The immersed tube prefabrication universal formwork system as described in any one of claims 1 to 9 is adopted, and parts of components of different specifications are replaced and connected to standard components according to the size and chamfer shape of the immersed tube segments.

Images