Anisometric sphere curved surface fair-faced concrete outer side formwork structure and installation method thereof

Abstract

The application relates to the technical field of building construction, in particular to a special-shaped spherical curved fair-faced concrete outer side formwork structure and a mounting method thereof. The special-shaped spherical curved fair-faced concrete outer side formwork structure comprises a supporting assembly, an inner side formwork, a keel steel bar, an outer side formwork and a reinforcing module; the inner side formwork and the outer side formwork are respectively located on the two sides of the keel steel bar, and a tension bolt is used for connecting the inner side formwork and the outer side formwork; the supporting assembly is arranged on the side of the inner side formwork away from the keel steel bar and is used for supporting the inner side formwork; the thickness of the outer side formwork can meet the special-shaped bending requirement; the reinforcing module is arranged on the side of the outer side formwork away from the keel steel bar, a plurality of reinforcing modules are arranged, the plurality of reinforcing modules are distributed along the length direction of the outer side formwork, and the reinforcing module is used for supporting the outer side formwork. The application has the effects of realizing the fixing of the special-shaped spherical curved fair-faced concrete outer side formwork under the condition of guaranteeing the assembling precision of the outer side formwork.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction technology, in particular to a special-shaped spherical curved fair-faced concrete outer formwork structure and a mounting method thereof. BACKGROUND

[0002] With the increasing construction of various public buildings such as science museums, theaters, and cultural and sports centers, the application of fair-faced concrete technology in such buildings is gradually increasing. Important parts such as exhibition halls and lobbies often use more gentle and diverse arc-shaped and multi-curved surface structures.

[0003] At the same time, buildings are no longer just practical, and more and more buildings begin to emphasize the overall beauty, uniqueness, and landmark of the outside. Arc-shaped roofs and special-shaped curved surfaces are unique in form and meet the above-mentioned pursuit, and are increasingly adopted by various buildings, especially public buildings.

[0004] The operation steps of the fair-faced concrete pouring of the related art normal wall surface are as follows: first, the steel bars are bound, then the inner formwork and the outer formwork are erected, the inner formwork and the outer formwork are fixed by the tension bolts, and then the fair-faced concrete is poured between the inner formwork and the outer formwork to form the fair-faced concrete wall surface. However, the traditional pouring method is not suitable for pouring the special-shaped spherical curved surface. The reason is that when the steel bars are bound, it is not convenient to fix the inner formwork and the outer formwork, so the pouring sequence commonly used for the fair-faced concrete pouring of the special-shaped spherical curved surface is to install the inner formwork first, then bind the steel bars, and finally fix the outer formwork. It can be understood that the inner formwork can be fixed by the prefabricated and assembled whole back lath, and the outer formwork cannot be fixed by the prefabricated and assembled whole back lath. Therefore, how to fix the fair-faced concrete outer formwork of the special-shaped spherical curved surface while ensuring the assembly accuracy of the outer formwork is a problem to be solved. SUMMARY

[0005] In order to fix the fair-faced concrete outer formwork of the special-shaped spherical curved surface while ensuring the assembly accuracy of the outer formwork, and improve the construction quality, the present application provides a special-shaped spherical curved fair-faced concrete outer formwork structure and a mounting method thereof.

[0006] The special-shaped spherical curved fair-faced concrete outer formwork structure and the mounting method thereof provided by the present application adopt the following technical solutions:

[0007] A special-shaped spherical curved fair-faced concrete outer formwork structure, comprising a support assembly, an inner formwork, a keel steel bar, a tension bolt, an outer formwork, and a reinforcing module;

[0008] The inner side formwork and the outer side formwork are respectively located on both sides of the keel steel bar, and the inner side formwork and the outer side formwork are matched with the shape of the keel steel bar; the draw bolt is used for connecting the inner side formwork and the outer side formwork, the support assembly is arranged on the side of the inner side formwork away from the keel steel bar, and is used for supporting the inner side formwork; the thickness of the outer side formwork can meet the special-shaped bending requirement, and the reinforcing module is arranged on the side of the outer side formwork away from the keel steel bar, a plurality of reinforcing modules are arranged, the plurality of reinforcing modules are distributed along the length direction of the outer side formwork, and the reinforcing module is used for supporting the outer side formwork.

[0009] By adopting the technical scheme, during installation, the inner side formwork is first fixed through the support assembly, then the keel steel bar is bound, and then the outer side formwork is installed and reinforced through the plurality of reinforcing modules. On one hand, the outer side formwork is used to bend the special-shaped curved surface, and on the other hand, the reinforcing module is used to support and reinforce the outer side formwork to meet the pouring strength requirement. In this way, the super-thin formwork installation effect of the special-shaped spherical curved surface is met, and the reinforcing stress requirement is also met, that is, the assembly precision of the outer side formwork is ensured, the fixing of the special-shaped spherical curved surface of the fair-faced concrete outer side formwork is realized, and the construction quality is improved.

[0010] Optionally, the reinforcing module comprises a formwork strip and an arc-shaped keel, the formwork strip is attached to the side of the outer side formwork away from the keel steel bar, the arc-shaped keel is attached to the side of the formwork strip away from the outer side formwork, and the formwork strip and the arc-shaped keel are arranged along the height direction of the outer side formwork.

[0011] By adopting the technical scheme, during installation, the formwork strip is attached to the outer side formwork for installation, and the arc-shaped keel is attached to the formwork strip for installation. The formwork strip and the outer side formwork are used to form a force-bearing formwork with a large overall thickness. In this way, the outer side formwork realizes the super-thin formwork installation effect of the special-shaped spherical curved surface, and the formwork strip realizes the reinforcing effect and meets the strength requirement.

[0012] Optionally, the spacing between two adjacent formwork strips is 2-3 cm.

[0013] By adopting the technical scheme, the strength requirement is met, and the formwork strips are divided into a plurality of formwork strips, so that installation and fixing are facilitated, and the use amount of the formwork strips can be saved.

[0014] Optionally, the formwork strip and the arc-shaped keel are in a T shape as a whole, and the width of the formwork strip is greater than the width of the arc-shaped keel.

[0015] By adopting the technical scheme, the formwork strip and the arc-shaped keel are in a T shape as a whole, so that the installation strength of the whole can be ensured.

[0016] Optionally, the two ends of the pair of pull bolts are respectively threaded out from the inner formwork and the outer formwork, and the pair of pull bolts are located between the two formwork strips.

[0017] By adopting the above technical scheme, the pull bolts are only threaded in the inner formwork and the outer formwork, thereby reducing the installation difficulty.

[0018] Optionally, the support assembly comprises main backrests and auxiliary backrests, the auxiliary backrests and the main backrests are provided in plurality, each of the main backrests is arranged along the height direction of the inner formwork, each of the main backrests is distributed along the length direction of the inner formwork, and each of the auxiliary backrests is arranged along the length direction of the inner formwork.

[0019] By adopting the above technical scheme, the main backrests and the auxiliary backrests jointly play a role of supporting the inner formwork, thereby ensuring the strength of the inner formwork.

[0020] Optionally, a tapered cylinder is arranged on the pair of pull bolts, the tapered cylinder is provided in two, and the side of the outer formwork away from the reinforcing module or the side of the inner formwork away from the support assembly is abutted on the tapered cylinder.

[0021] By adopting the above technical scheme, the tapered cylinder can play a role of positioning and limiting, thereby ensuring the accuracy of the installation of the inner formwork or the outer formwork.

[0022] Optionally, the thickness of the outer formwork is 6 mm, and the thickness of the formwork strip is 12 mm.

[0023] By adopting the above technical scheme, the formwork strip and the outer formwork form a 18 mm thick stress formwork, which not only meets the effect of the ultra-thin formwork shaping installation under the special-shaped spherical curved surface shape, but also meets the reinforcing stress requirement.

[0024] Optionally, a method for installing a special-shaped spherical curved surface fair-faced concrete outer formwork comprises the following steps:

[0025] S1, positions of a keel steel bar, an inner formwork and an outer formwork are determined;

[0026] S2, the inner formwork is installed according to the shape of the keel steel bar;

[0027] S3, main backrests, auxiliary backrests and inclined supports are fixed on the inner formwork;

[0028] S4, the keel steel bar is bound on the side of the inner formwork away from the backrests;

[0029] S5, a pair of pull bolts are threaded;

[0030] S6, install the outer side formwork and fix by means of the tension bolt;

[0031] S7, install the arc-shaped keel;

[0032] S8, install the formwork strip;

[0033] S9, pour the fair-faced concrete.

[0034] By adopting the above technical scheme, the fixing of the special-shaped spherical curved surface fair-faced concrete outer side formwork is realized under the condition of ensuring the assembly precision of the outer side formwork, and the assembly precision of the outer side formwork is ensured.

[0035] Optionally, in the installation of the arc-shaped keel in S7, the arc-shaped keel is pre-installed, then a new arc-shaped keel and a formwork strip are additionally arranged between the adjacent two arc-shaped keels, and finally the interval between the adjacent two formwork strips is 2-3cm.

[0036] By adopting the above technical scheme, the support of the outer side formwork is realized by pre-installation, then a new arc-shaped keel and a formwork strip are additionally arranged between the adjacent two arc-shaped keels, so that the strength requirement is met.

[0037] In summary, the present application has at least one of the following beneficial technical effects:

[0038] 1. The present application provides a special-shaped spherical curved surface fair-faced concrete outer side formwork structure, which comprises an inner side formwork, a support assembly, a keel steel bar, an outer side formwork and an arc-shaped keel, wherein the outer side formwork comprises an outer layer formwork and a formwork strip, the thickness of the outer layer formwork is 6mm, and the thickness of the formwork strip is 12mm. The outer layer formwork is installed and formed along the shape of the keel steel bar, the formwork strip is attached to the side of the outer layer formwork away from the keel steel bar, and the arc-shaped keel is attached to the side of the formwork strip away from the outer layer formwork, wherein the cross section of the formwork strip and the arc-shaped keel is T-shaped, the formwork strip and the arc-shaped keel form a reinforcing module, and a plurality of reinforcing modules are arranged along the length direction of the outer layer formwork. When the arc-shaped keel is installed, the formwork strip and the outer layer formwork form a 18mm-thick stress formwork, which not only meets the effect of the ultra-thin formwork shaping and installation under the special-shaped spherical curved surface form, but also meets the reinforcing stress requirement, that is, the fixing of the special-shaped spherical curved surface fair-faced concrete outer side formwork is realized under the condition of ensuring the assembly precision of the outer side formwork, and the construction quality is improved;

[0039] 2. The application also provides a method for installing a special-shaped spherical curved fair-faced concrete outer formwork, comprising the following steps: first, installing an inner formwork according to the shape of a keel bar; second, fixing back battens on the inner formwork; third, binding the keel bar on the side of the inner formwork away from the back battens; fourth, threading a tie bolt; fifth, installing an outer formwork and fixing it through the tie bolt; sixth, installing an arc-shaped keel; seventh, installing a formwork strip; and eighth, pouring the fair-faced concrete. In this way, the installation of the special-shaped spherical curved fair-faced concrete outer formwork is realized under the condition of ensuring the assembly accuracy of the outer formwork, and the assembly accuracy of the outer formwork is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a top view of the special-shaped spherical curved fair-faced concrete outer formwork structure in the application;

[0041] Figure 2 is an isometric view of the special-shaped spherical curved fair-faced concrete outer formwork structure in the application;

[0042] Figure 3 is an enlarged view of position A in Figure 2

[0043] Figure 4 is an isometric view of the special-shaped spherical curved fair-faced concrete outer formwork structure in the application from another angle;

[0044] Figure 5 is a flowchart of the method for installing the special-shaped spherical curved fair-faced concrete outer formwork in the application.

[0045] BRIEF DESCRIPTION OF DRAWINGS: 1, inner formwork; 2, conical cylinder; 3, tie bolt; 4, outer formwork; 5, support assembly; 51, main back batten; 52, auxiliary back batten; 6, reinforcing module; 61, formwork strip; 62, arc-shaped keel. DETAILED DESCRIPTION

[0046] The application will be further described below in combination with the accompanying drawings. Figures 1-5 The application will be further described below in combination with the accompanying drawings.

[0047] The application discloses a special-shaped spherical curved fair-faced concrete outer formwork structure, referring to Figure 1 and Figure 2 The special-shaped spherical curved fair-faced concrete outer formwork structure comprises a support assembly 5, an inner formwork 1, a keel bar (not shown in the figure), a tie bolt 3, an outer formwork 4, and a reinforcing module 6. The inner formwork 1 and the outer formwork 4 are respectively located on the two sides of the keel bar. The tie bolt 3 is used to connect the inner formwork 1 and the outer formwork 4. The support assembly 5 is arranged on the side of the inner formwork 1 away from the keel bar. The reinforcing module 6 is arranged on the side of the outer formwork 4 away from the keel bar. ​

[0048] During installation, first install the inner formwork 1, then fix the inner formwork 1 by using the support assembly 5, then bind the steel bar, after the steel bar is bound, install the outer formwork 4, and finally reinforce the outer formwork 4 by using the reinforcing module 6. After all the work is completed, the cast-in-place concrete can be poured. In this way, the outer formwork 4 meets the installation effect of the super-thin formwork under the special-shaped spherical curved surface shape, and the reinforcing module 6 realizes the reinforcement of the outer formwork 4, meeting the strength requirement. In this way, the assembly precision of the outer formwork 4 is ensured, and the fixing of the special-shaped spherical curved surface cast-in-place concrete outer formwork is realized, ensuring the assembly precision of the outer formwork 4.

[0049] Specifically, referring to Figure 1 and Figure 2 , the reinforcing module 6 includes a formwork strip 61 and an arc-shaped steel bar 62. The formwork strip 61 is attached to the side of the outer formwork 4 away from the steel bar, and the arc-shaped steel bar 62 is attached to the side of the formwork strip 61 away from the outer formwork 4. Both the formwork strip 61 and the arc-shaped steel bar 62 are arranged along the height direction of the outer formwork 4. During installation, first fix the arc-shaped steel bar 62, then insert the formwork strip 61 into the gap between the outer formwork 4 and the inner formwork 1, which ensures the compactness of the overall structure. The outer formwork 4 meets the shaping of the super-thin formwork under the special-shaped spherical curved surface shape, and the formwork strip 61 realizes the reinforcing effect, i.e., the outer formwork 4 and the formwork strip 61 together form a force-bearing formwork, ensuring the strength during pouring.

[0050] It should be noted that the thickness of the outer formwork 4 can meet the special-shaped bending requirement. The preferred thickness of the outer formwork 4 is 6mm, and the preferred thickness of the formwork strip 61 is 12mm. The thickness of the outer formwork 4 is selected to be 6mm, which can meet different shaping requirements. When the outer formwork 4 is thicker, the bending difficulty is greater, and the problem of easy breakage may occur. When the outer formwork 4 is too thin, it is not convenient to install and fix. Since the 6mm outer formwork 4 is separately arranged, it cannot meet the strength requirement. By arranging the 12mm formwork strip 61, a 18mm thick force-bearing formwork is formed, thereby meeting the strength requirement. Of course, it can be understood that the inner formwork 1 and the outer formwork 4 are matched with the shape of the steel bar, i.e., they need to be bent and shaped according to the shape of the steel bar. Since the formwork strip 61 and the outer formwork 4 are attached, and the arc-shaped steel bar 62 and the formwork strip 61 are attached, the formwork strip 61 and the arc-shaped steel bar 62 are preferably designed to be arc-shaped. Of course, the inner formwork 1 can be special-shaped or planar.

[0051] Referring to Figure 1 and Figure 2The reinforcing module 6 is provided in plurality, and the plurality of reinforcing modules 6 are distributed at intervals along the length direction of the outer formwork 4. In this way, the plurality of reinforcing modules 6 are assembled in units. Specifically, the interval between two adjacent formwork strips 61 is 2-3 cm. On the one hand, the interval between two adjacent formwork strips 61 can be provided for the through arrangement of the tension bolt 3; on the other hand, the plurality of formwork strips 61 can facilitate installation and fixation, and since the interval between two adjacent formwork strips 61 is only 2-3 cm, the strength requirement can be met by the outer formwork 4 alone, thereby indirectly achieving the purpose of saving resources.

[0052] The formwork strip 61 and the arc-shaped keel 62 are in T shape as a whole, and the width of the formwork strip 61 is greater than the width of the arc-shaped keel 62. The T shape of the formwork strip 61 and the arc-shaped keel 62 as a whole can ensure the installation strength of the whole, and such arrangement can maximize the contact area with the outer formwork 4, thereby reducing the construction cost under the premise of meeting the strength requirement. During construction, the outer formwork 4 can be installed first, then the arc-shaped keel 62, and finally the formwork strip 61. In this way, the formwork strip 61 is equivalent to being embedded between the arc-shaped keel 62 and the outer formwork 4, thereby ensuring the compactness of the overall structure.

[0053] It should be noted that, referring to Figure 2 and Figure 3 , in order to facilitate the installation of the outer formwork 4, the outer formwork 4 is modularly installed, that is, the outer formwork as a whole is assembled by the plurality of outer formworks 4. In order to facilitate assembly, the formwork strip 61 and the arc-shaped keel 62 are specially structured. Specifically, on each outer formwork 4, the formwork strip 61 and the arc-shaped keel 62 in the middle are in T shape, which can ensure the strength of the middle of the outer formwork 4, and the formwork strip 61 and the arc-shaped keel 62 at both ends are in L shape. When two adjacent outer formworks 4 in the horizontal direction are spliced, the two groups of L-shaped formwork strips 61 and arc-shaped keels 62 are aligned and combined, and when a T shape is formed, it indicates that the outer formworks 4 are spliced and aligned, thereby solving the problem that the butt joint of the outer formwork 4 is not convenient to observe directly.

[0054] Further, the formwork strip 61 and the arc-shaped keel 62 on each outer formwork are longer than the width of the outer formwork 4. When two adjacent outer formworks 4 in the vertical direction are spliced, since the formwork strip 61 and the arc-shaped keel 62 are relatively long, the formwork strip 61 and the arc-shaped keel 62 can be pressed on the two outer formworks 4 at the same time, thereby facilitating the alignment of the two outer formworks 4 in the vertical direction.

[0055] In this embodiment, the reinforcing modules 6 are provided in two types, one of which is slightly longer than the width of the outer formwork 4, and the other of which is a full-length type, i.e., the length of the reinforcing module 6 is the distance from the lowest point to the highest point of the outer formwork 4. During installation, first, the reinforcing module 6 that is slightly longer than the width of the outer formwork 4 is fixed on the outer formwork 4, and then the full-length reinforcing module 6 is added between two adjacent reinforcing modules 6 that are slightly longer than the width of the outer formwork 4, so as to ensure that the distance between the reinforcing modules 6 is 2-3 cm. The reinforcing module 6 that is slightly longer than the width of the outer formwork 4 can meet the requirements of support and splicing, and the full-length reinforcing module 6 is used to reinforce the overall outer formwork 4, so as to ensure the compactness and strength of the outer formwork 4.

[0056] With reference to Figure 1 and Figure 2 The two ends of the tie bolt 3 are respectively threaded out from the inner formwork 1 and the outer formwork 4, and the tie bolt 3 is located between the two formwork strips 61. The tie bolt 3 is only threaded on the inner formwork 1 and the outer formwork 4, and does not need to pass through the formwork strips 61 and the arc-shaped keels 62, i.e., only a through hole needs to be formed on the inner formwork 1 and the outer formwork 4, which can reduce the installation difficulty and is convenient for disassembly. At the same time, since the tie bolt 3 does not need to pass through the formwork strips 61 and the arc-shaped keels 62, i.e., the tie bolt 3 does not have a limiting effect on the formwork strips 61 and the arc-shaped keels 62, which is convenient for the adjustment of the formwork strips 61 and the arc-shaped keels 62.

[0057] It should be noted that the tie bolt is provided with a tapered barrel 2, and the tapered barrel 2 is provided in two, and the outer formwork 4 or the inner formwork 1 abuts against the tapered barrel 2, which can play a positioning and limiting role, so as to ensure the accuracy of installation.

[0058] With reference to Figure 2 and Figure 4 The support assembly 5 includes main back strakes 51 and auxiliary back strakes 52, and the auxiliary back strakes 52 and the main back strakes 51 are provided in multiple, each main back strake 51 is arranged along the height direction of the inner formwork 1, each main back strake 51 is uniformly and interval distributed along the length direction of the inner formwork 1, and each auxiliary back strake 52 is arranged along the length direction of the inner formwork 1, and each main back strake 51 is uniformly and interval distributed along the height direction of the inner formwork 1. The main back strake 51 and the auxiliary back strake 52 jointly play a role of supporting the inner formwork 1, and ensure the strength of the inner formwork 1.

[0059] Of course, the density of the main back strake 51 and the auxiliary back strake 52 can be adjusted according to actual conditions, and in this embodiment, the main back strake 51 and the auxiliary back strake 52 are connected through a connecting piece, and of course, they can also be directly connected through welding. In actual construction, the setting density of the main back strake 51 should be greater than that of the auxiliary back strake 52.

[0060] With reference to Figure 1 and Figure 2The support component 5 may also include diagonal supports (not shown in the figure), which are connected to the main back rib 51. The diagonal supports, the ground, and the inner template 1 form a triangular structure. Because the diagonal supports, the ground, and the inner template 1 form a triangular structure, the stability and strength are further improved, ensuring the safety of the inner template 1. Of course, the diagonal supports can also be connected to the secondary back rib 52, or directly to the inner template 1.

[0061] It should be noted that the inner formwork 1, the reinforcing bars and the outer formwork 4 need to be positioned in advance to ensure the accuracy of the installation position, so that the inner formwork 1 can be installed first, then the reinforcing bars can be tied, and finally the outer formwork 4 can be installed.

[0062] The implementation principle of the outer formwork structure for an irregularly shaped spherical curved surface fair-faced concrete according to an embodiment of this application is as follows: During construction, the inner formwork 1 is first installed, and the inner formwork 1 is supported and reinforced using the main back rib 51, the secondary back rib 52, and the diagonal support. Then, the reinforcing bars are tied. After the irregular requirements for the installation of the reinforcing bars are completed, tie bolts 3 are inserted. The outer formwork 4 is installed on the side of the reinforcing bars away from the inner formwork 1 and fixed with tie bolts 3. Then, the arc-shaped keel 62 is installed, and finally, the formwork strip 61 is installed. After the arc-shaped keel 62 is installed, the formwork strip 61 and the outer formwork form a load-bearing formwork with a large thickness. This satisfies both the shaping and installation effect of the ultra-thin formwork under the irregularly shaped spherical curved surface and the reinforcement and load-bearing requirements. That is, while ensuring the assembly accuracy of the outer formwork 4, the outer formwork of the irregularly shaped spherical curved surface fair-faced concrete is fixed, thus improving the construction quality.

[0063] This application also discloses a method for installing the outer formwork of an irregularly shaped spherical curved surface fair-faced concrete. (Refer to...) Figure 5 The installation method for the outer formwork of irregularly shaped spherical curved surface fair-faced concrete includes the following steps:

[0064] S1. Determine the positions of the reinforcing bars, inner formwork 1, and outer formwork 4;

[0065] When determining the positions of the reinforcing bars, inner formwork 1, and outer formwork 4, it is necessary to ensure the accuracy of their positions. Any deviation will prevent subsequent construction from proceeding normally.

[0066] S2. Install the inner formwork 1 according to the shape of the keel reinforcement;

[0067] In this embodiment, the installation method of the inner template 1 is the same as the traditional installation method, which is an operation known to those skilled in the art. In this embodiment, the installation operation of the inner template 1 will not be described in detail.

[0068] S3, fixing the main back 51, the secondary back 52 and the inclined support on the inner formwork 1;

[0069] When the main back 51 and the secondary back 52 are metal, the main back 51 and the secondary back 52 can be connected by the connecting piece, of course, can also be directly connected by welding. When the main back 51 and the secondary back 52 are wooden, the main back 51 and the secondary back 52 can be connected by the connecting piece.

[0070] S4, binding the keel steel bar on the side of the inner formwork 1 away from the back;

[0071] The binding of the keel steel bar can be operated according to the construction requirements, and in this embodiment, specific description is not made.

[0072] S5, setting the opposite pull bolt 3;

[0073] S6, installing the outer formwork 4 and fixing it through the opposite pull bolt 3;

[0074] S7, installing the arc-shaped keel 62;

[0075] S8, installing the formwork strip 61;

[0076] During construction, the outer formwork 4 can be installed first, then the arc-shaped keel 62 is installed, and finally the formwork strip 61 is installed. In this way, the formwork strip 61 is equivalent to being embedded between the arc-shaped keel 62 and the outer formwork 4, which ensures the compactness of the overall structure. It should be noted that when the formwork strip 61 reaches the preset position, the formwork strip 61 and the arc-shaped keel 62 need to be fixed. In this embodiment, steam nails are used for fixing. When fixing, oblique shooting is preferred, so as to avoid the steam nails from penetrating the outer formwork 4. Because once the outer formwork 4 is penetrated, the stability and strength of the whole outer formwork 4 will be directly damaged.

[0077] It should be noted that in S7, the arc-shaped keel 62 is pre-installed, then a new through-length arc-shaped keel 62 and a formwork strip 61 are added between the adjacent two arc-shaped keels 62, and finally the spacing between the adjacent two formwork strips 61 is 2-3cm. Through pre-installation, the support of the outer formwork 4 is first realized, then a new through-length arc-shaped keel 62 and a formwork strip 61 are added between the adjacent two arc-shaped keels 62, so as to meet the strength requirement, and also facilitate the fine adjustment of the arc-shaped keel 62, ensure the splicing closure without misplacement, and achieve the best assembly effect.

[0078] S9, pouring the clear water concrete.

[0079] The implementation principle of the installation method of the special-shaped spherical curved fair-faced concrete outer formwork is as follows: first, installing the inner formwork 1 according to the shape of the steel bar; second, fixing the back lath on the inner formwork 1; third, binding the steel bar 2 on the side of the inner formwork 1 away from the back lath; fourth, threading the tension bolt 3; fifth, installing the outer formwork 4 and fixing it through the tension bolt 3; sixth, installing the arc-shaped steel bar 62; seventh, installing the formwork strip 61; eighth, pouring the fair-faced concrete. In this way, the fixing of the special-shaped spherical curved fair-faced concrete outer formwork 4 is realized under the condition of ensuring the assembly precision of the outer formwork 4, and the assembly precision of the outer formwork 4 is ensured.

[0080] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A structure of a formwork for a fair-faced concrete with a curved surface of a special-shaped sphere, characterized in that: The support assembly (5), the inner side formwork (1), the steel bar, the anchor bolt (3), the outer side formwork (4) and the reinforcing module (6) are included. The inner side formwork (1) and the outer side formwork (4) are respectively located on the two sides of the steel bar, and the inner side formwork (1) and the outer side formwork (4) are matched with the shape of the steel bar; the anchor bolt (3) is used for connecting the inner side formwork (1) and the outer side formwork (4), the support assembly (5) is arranged on the side of the inner side formwork (1) away from the steel bar, and is used for supporting the inner side formwork (1); the thickness of the outer side formwork (4) can meet the special-shaped bending requirement, the reinforcing module (6) is arranged on the side of the outer side formwork (4) away from the steel bar, the reinforcing module (6) is provided in plurality, and the plurality of reinforcing modules (6) are distributed along the length direction of the outer side formwork (4), and the reinforcing module (6) is used for supporting the outer side formwork (4). The reinforcing module (6) includes a formwork strip (61) and an arc-shaped keel (62), the formwork strip (61) is attached to the side of the outer side formwork (4) away from the steel bar, the arc-shaped keel (62) is attached to the side of the formwork strip (61) away from the outer side formwork (4), and the formwork strip (61) and the arc-shaped keel (62) are arranged along the height direction of the outer side formwork (4); the thickness of the outer side formwork (4) is 6mm, and the thickness of the formwork strip (61) is 12mm. The formwork strip (61) and the arc-shaped keel (62) are T-shaped as a whole, the width of the formwork strip (61) is greater than the width of the arc-shaped keel (62), the reinforcing module (6) is provided in two types, one type is longer than the width of the outer side formwork (4), and the other type is a full-length type, that is, the length of the reinforcing module (6) is the distance from the lowest point to the highest point of the outer side formwork (4), and the full-length type reinforcing module (6) is arranged between two adjacent reinforcing modules (6) longer than the width of the outer side formwork (4).

2. The deformed sphere curved fair-faced concrete outer formwork structure according to claim 1, characterized in that: The distance between two adjacent formwork strips (61) is 2-3cm.

3. The deformed sphere curved fair-faced concrete outer formwork structure according to claim 1, characterized in that: The two ends of the anchor bolt (3) are respectively penetrated from the inner side formwork (1) and the outer side formwork (4), and the anchor bolt (3) is located between two formwork strips (61).

4. The deformed sphere curved fair-faced concrete outer formwork structure according to claim 1, characterized in that: The support assembly (5) includes a main back ridge (51) and a vice back ridge (52), the vice back ridge (52) and the main back ridge (51) are provided in plurality, each main back ridge (51) is arranged along the height direction of the inner side formwork (1), each main back ridge (51) is distributed along the length direction of the inner side formwork (1), and each vice back ridge (52) is arranged along the length direction of the inner side formwork (1).

5. The deformed sphere curved fair-faced concrete outer formwork structure according to claim 1, characterized in that: The opposite pull bolts are provided with conical barrels (7), and the outer formwork (4) away from the reinforcing module (6) or the inner formwork (1) away from the support assembly (5) abuts on the conical barrels (7).

6. A method for installing a formwork for a fair-faced concrete with a spherical surface, using the formwork structure for a fair-faced concrete with a spherical surface according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: S1, determining the positions of the keel steel bars, the inner formwork (1) and the outer formwork (4); S2, installing the inner formwork (1) according to the shape of the keel steel bars; S3, fixing the main back lath (51), the auxiliary back lath (52) and the inclined support (53) on the inner formwork (1); S4, binding the keel steel bars on the side of the inner formwork (1) away from the back lath; S5, threading the opposite pull bolts (3); S6, installing the outer formwork (4) and fixing the same through the opposite pull bolts (3); S7, installing the arc-shaped keels (62); S8, installing the formwork strips (61); S9, pouring the clear concrete.

7. The method of installing a fair-faced concrete form according to claim 6, wherein: In the step S7 of installing the arc-shaped keels (62), the arc-shaped keels (62) are pre-installed, then new arc-shaped keels (62) and formwork strips (61) are additionally arranged between the adjacent two arc-shaped keels (62), and finally the interval between the adjacent two formwork strips (61) is 2-3 cm.

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