A multi-curved formwork system for thin-shell concrete structures and its construction method

Abstract

This invention discloses a multi-curved formwork system and its construction method for thin-shell concrete structures. The multi-curved formwork system includes an adjustable multi-curved formwork for adapting to the curved surface of the thin-shell concrete structure to be poured; a vertical frame supported between the ground and the adjustable multi-curved formwork; and multiple adjusting screw assemblies positioned between the ground and the adjustable multi-curved formwork, each of which can adjust the curved shape of the adjustable multi-curved formwork according to its length extension and contraction. This invention avoids problems such as grout leakage and formwork bursting.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, in particular to a multi-curved surface formwork system of a concrete thin-shell structure and a construction method thereof. BACKGROUND

[0002] At present, various single-curved surface and multi-curved surface cast-in-place concrete thin-shell structures are more and more common. In order to ensure that the pouring quality of the multi-curved surface special-shaped concrete thin-shell structure meets the requirements, the formwork laying quality and the arrangement of the formwork erection quality must be strictly controlled. The thin-shell structure is a term in architecture, which refers to a thin-walled structure of a curved surface. According to the form of the curved surface, it is divided into cylindrical shell, dome thin shell, double-curved flat shell and double-curved parabolic shell, etc. The materials are mostly reinforced concrete. Generally, the concrete thin-shell structure with a curved surface usually adopts scattered formwork splicing. A large number of wooden wedges are used to adjust the ordinary arrangement of the formwork, which has the problems of large loss, non-reusable, long artificial construction period, large amount of material, and easy to cause leakage of concrete, formwork explosion and other construction safety and poor quality of cast-in-place concrete thin-shell structure at the splicing joints. SUMMARY

[0003] The purpose of the present application is to provide a multi-curved surface formwork system of a concrete thin-shell structure and a construction method thereof, so as to solve the problem that the splicing formwork system of the concrete thin-shell structure is prone to leakage of concrete and formwork explosion at the splicing joints.

[0004] In order to solve the above technical problems, the present application provides a multi-curved surface formwork system of a concrete thin-shell structure, comprising:

[0005] A multi-curved surface adjustable formwork is used to adapt to the adjustment according to the curved surface of the concrete thin-shell structure to be poured.

[0006] A vertical arrangement is supported between the ground and the multi-curved surface adjustable formwork.

[0007] A plurality of adjusting screw assemblies are arranged between the ground and the multi-curved surface adjustable formwork. Each adjusting screw assembly can adjust the curved surface form of the multi-curved surface adjustable formwork according to the length change.

[0008] Further, the multi-curved surface formwork system of the concrete thin-shell structure provided by the present application comprises an adjusting screw, a connecting piece and a lifting ring are sequentially arranged at the upper and lower ends of the adjusting screw, the lifting ring and the connecting piece are connected in a ring-to-ring manner, the lifting ring at the upper end of the adjusting screw is arranged on the multi-curved surface adjustable formwork, and the lifting ring at the lower end of the adjusting screw is arranged on the ground.

[0009] Further, the multi-curved surface formwork system of the concrete thin-shell structure provided by the present application, the connecting piece is a ring or a hook.

[0010] Further, the multi-curved surface formwork system for concrete thin-shell structure provided by the present application, the lifting ring at the lower end of the adjusting screw is arranged on the ground through the cushion block.

[0011] Further, the multi-curved surface formwork system for concrete thin-shell structure provided by the present application, the adjusting screw comprises an upper screw with a first screw direction, a lower screw with a second screw direction, and a basket nut threadedly connected between the upper screw and the lower screw, the basket nut is used for adjusting the synchronous extension and contraction of the upper screw and the lower screw.

[0012] Further, the multi-curved surface formwork system for concrete thin-shell structure provided by the present application, the adjusting screw assembly is distributed in the vertical frame.

[0013] Further, the multi-curved surface formwork system for concrete thin-shell structure provided by the present application, the vertical frame at least comprises a vertical rod, and the vertical rod is a plurality of vertical rods with different heights.

[0014] Further, the multi-curved surface formwork system for concrete thin-shell structure provided by the present application, the vertical rod comprises a steel pipe, and a top support and a bottom support are arranged at the upper end and the lower end of the steel pipe respectively, the top support is supported on the multi-curved adjustable formwork through the square wood arranged in the top support, and the bottom support is arranged on the ground through the cushion block.

[0015] In order to solve the above technical problems, the present application provides a construction method of the multi-curved surface formwork system for concrete thin-shell structure according to the above, comprising:

[0016] The base point and the inflection point of the multi-curved adjustable formwork are determined by a three-dimensional modeling method, and the lifting ring is arranged at the inflection point of the multi-curved adjustable formwork;

[0017] The position of the vertical frame is determined by a three-dimensional modeling method, the vertical frame is constructed on the ground, the multi-curved adjustable formwork is arranged on the vertical frame and aligned at the base point position;

[0018] The position of the adjusting screw assembly is determined by a three-dimensional modeling method, the adjusting screw assembly is constructed between the ground and the inflection point of the multi-curved adjustable formwork, the two ends of the adjusting screw are arranged at the inflection point of the multi-curved adjustable formwork and the ground respectively, and the extension length of the adjusting screw is adjusted to adapt the multi-curved adjustable formwork to the curved surface of the concrete thin-shell structure to be poured.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The concrete thin-shell structure multi-curved surface formwork system and the construction method thereof provided by the application adjust the curved surface of the multi-curved surface adjustable formwork by adjusting the extension length of the screw rod to adapt to the curved surface form of the concrete thin-shell structure to be cast to form a multi-curved surface formwork system without splicing joints, avoiding the splicing joints of the traditional splicing formwork system, so that the problem of slurry leakage and form explosion does not occur when the concrete thin-shell structure is cast by using the multi-curved surface formwork system. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the facade structure of the vertical row frame;

[0022] Figure 2 is a schematic view of the structure in which the multi-curved surface adjustable formwork is arranged on the vertical row frame;

[0023] Figure 3 is a schematic view of the multi-curved surface formwork system of the concrete thin-shell structure;

[0024] Figure 4 is a schematic view of the connection node of the adjusting screw rod and the multi-curved surface adjustable formwork;

[0025] The drawings show:

[0026] 100, multi-curved surface formwork system;

[0027] 110, multi-curved surface adjustable formwork;

[0028] 120, vertical row frame, 121, vertical rod, 1211, steel pipe, 1212, top support, 1213, bottom support, 122, cushion block, 123, square wood;

[0029] 130, adjusting screw rod, 131, upper screw rod, 132, lower screw rod, 133, basket nut, 134, connecting piece, 135, lifting ring;

[0030] 140, ground. DETAILED DESCRIPTION

[0031] The application will be described in detail below with reference to the drawings: the advantages and features of the application will be clearer according to the following description. It should be noted that the drawings are very simplified and all use non-precise proportions, only for the purpose of facilitating and clearly assisting the description of the embodiments of the application.

[0032] Referring to Figures 1 to 3 , the embodiment of the application provides a multi-curved surface formwork system 100 of a concrete thin-shell structure, which comprises a multi-curved surface adjustable formwork 110, a vertical row frame 120 and an adjusting screw rod assembly 130, wherein:

[0033] The multi-curved adjustable formwork 110 is used for adapting and adjusting according to the curved surface of the concrete thin-shell structure to be poured. The multi-curved adjustable formwork 110 can refer to the Chinese invention patent application for "Adjustable formwork suitable for multi-curved concrete structure and construction method thereof" with the application number 202211270239.1.

[0034] The vertical bent 120 is supported between the ground 140 and the multi-curved adjustable formwork 110.

[0035] The adjusting screw assembly 130 is provided between the ground 140 and the multi-curved adjustable formwork 110, and each adjusting screw assembly 130 can adjust the curved surface shape of the multi-curved adjustable formwork 110 according to the length change.

[0036] Please refer to Figures 3 to 4 In order to adjust the curved surface change of the multi-curved adjustable formwork 110 at the inflection point, the multi-curved formwork system 100 of the concrete thin-shell structure provided by the embodiment of the present application includes an adjusting screw, a connecting piece 134 and a lifting ring 135 are sequentially arranged at the upper and lower ends of the adjusting screw, the lifting ring 135 and the connecting piece 134 are connected in a ring-to-ring clasp, the lifting ring 135 at the upper end of the adjusting screw is arranged on the multi-curved adjustable formwork 110, and the lifting ring 135 at the lower end of the adjusting screw is arranged on the ground 140. After the adjusting screw is stretched or retracted, the connecting piece 134 and the lifting ring 135 are connected in a ring-to-ring clasp, the connecting piece 134 is a ring or a hook, when the connecting piece 134 is a ring, the connecting piece 134 and the lifting ring 135 are connected in a ring-to-ring clasp, and when the connecting piece 134 is a hook, the connecting piece 134 and the lifting ring 135 are hooked, Figure 4 The hook is shown in the figure, and the connection between the connecting piece 134 and the lifting ring 135 in the two structures is essentially a hinged relationship. Then the adjusting screw can be adjusted in length to adapt to the angle change, so as to adjust the curved surface shape of the multi-curved adjustable formwork 110 at the inflection point.

[0037] In order to improve the reliability of the adjusting screw assembly 130 arranged on the ground 140, the multi-curved formwork system 100 of the concrete thin-shell structure provided by the embodiment of the present application, the lifting ring 135 at the lower end of the adjusting screw is arranged on the ground 140 through the cushion block 122. The cushion block 122 can be a concrete cushion block.

[0038] In order to realize the telescopic adjustment of the adjusting screw assembly 130, the multi-faceted formwork system 100 of the concrete thin-shell structure provided by the embodiment of the present application is provided with an adjusting screw, which comprises an upper screw 131 with a first screw direction, a lower screw 132 with a second screw direction, and a basket nut 133 threadedly connected between the upper screw 131 and the lower screw 132, and the basket nut 133 is used to adjust the synchronous telescopic movement of the upper screw 131 and the lower screw 132.

[0039] Please refer to Figure 3 In order to realize the curved surface shape adjustment of the multi-faceted adjustable formwork 110, the multi-faceted formwork system 100 of the concrete thin-shell structure provided by the embodiment of the present application is provided with the adjusting screw assembly 130, which is distributed in the vertical frame 120. Figure 3 Only the case that the adjusting screw assembly 130 is distributed in the vertical frame 120 is shown in the figure. Of course, when the edge adjustment of the multi-faceted adjustable formwork 110 is involved, the adjusting screw assembly 130 can also be arranged outside the vertical frame 120.

[0040] Please refer to Figures 1 to 3 The multi-faceted formwork system 100 of the concrete thin-shell structure provided by the embodiment of the present application is provided with the vertical frame 120, which comprises at least the vertical frame 121, and the vertical frame 121 is a plurality of vertical frames with different heights. Each vertical frame 121 comprises a steel pipe 1211, a top support 1212 arranged at the upper end of the steel pipe 1211, and a bottom support 1213 arranged at the lower end of the steel pipe 1211. The top support 1212 is supported on the multi-faceted adjustable formwork 110 by means of a square timber 123 arranged in the top support 1212, and the bottom support 1213 is arranged on the ground 140 by means of a cushion block 122. The vertical frame 120 comprises not only the vertical frame 121 but also other structures such as horizontal rods. That is, the vertical frame 120 is different from the vertical frame 121 in that the other structures are common structures.

[0041] Please refer to Figures 1 to 4 The embodiment of the present application also provides a construction method of the multi-faceted formwork system 100 of the concrete thin-shell structure, which comprises the following steps.

[0042] In step 201, the base point and the inflection point of the multi-faceted adjustable formwork 110 are determined by means of three-dimensional modeling, and a lifting ring 135 is arranged at the inflection point of the multi-faceted adjustable formwork 110.

[0043] In step 202, the position of the vertical frame 120 is determined by means of three-dimensional modeling, the vertical frame 120 is constructed on the ground 140, the multi-faceted adjustable formwork 110 is arranged on the vertical frame 120 and aligned at the base point position. Before the vertical frame 120 is determined, the on-site positioning of the pop line can be performed.

[0044] In step 203, the position of the adjusting screw assembly 130 is determined by three-dimensional modeling, the adjusting screw assembly 130 is constructed between the ground 140 and the inflection points of the multi-curved adjustable formwork 110, both ends of the adjusting screw are connected to the corresponding inflection points of the multi-curved adjustable formwork 110 and the ground 140 through a lifting ring 135 respectively, and the extension length of the adjusting screw is adjusted to adapt the multi-curved adjustable formwork 110 to the curved surface of the concrete thin-shell structure to be cast.

[0045] Please refer to Figure 3 The multi-curved formwork system 100 for the concrete thin-shell structure and the construction method thereof provided by the embodiment of the present application can adjust the curved surface of the multi-curved adjustable formwork 110 by adjusting the extension length of the adjusting screw to adapt to the curved surface of the concrete thin-shell structure to be cast, so that the multi-curved formwork system 100 without splicing joints is formed, the splicing joints of the traditional splicing formwork system is avoided, and therefore, when the concrete thin-shell structure is cast by using the multi-curved formwork system 100, the problems of slurry leakage and formwork explosion do not occur, and the casting quality of the concrete thin-shell structure is improved.

[0046] Please refer to Figure 3 The multi-curved formwork system 100 for the concrete thin-shell structure and the construction method thereof provided by the embodiment of the present application can support the multi-curved adjustable formwork 110 by the adjusted adjusting screw assembly 130 and the vertical row frame 120, so as to bear the gravity of the cast concrete during the casting of the concrete thin-shell structure, and the construction safety is ensured.

[0047] Please refer to Figures 1 to 3 The multi-curved formwork system 100 for the concrete thin-shell structure and the construction method thereof provided by the embodiment of the present application can reduce the labor and materials for formwork construction, and reduce the cost.

[0048] The present application is not limited to the above-mentioned specific embodiments, and obviously, the above-mentioned described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application. Those skilled in the art can make other levels of modifications and changes to the present application. Thus, if these modifications and changes of the present application belong to the scope of the claims of the present application, the present application also intends to include these modifications and changes.

Claims

1. A multi-faceted formwork system for a concrete shell structure, characterised in that, The utility model relates to a multi-curved surface adjustable formwork, a vertical row frame, a plurality of adjusting screw assemblies, and a method for constructing a multi-curved surface adjustable formwork. The multi-curved surface adjustable formwork is adapted to the curved surface of a concrete shell structure to be cast. The vertical row frame is supported between the ground and the multi-curved surface adjustable formwork. The plurality of adjusting screw assemblies are arranged between the ground and the multi-curved surface adjustable formwork, and each adjusting screw assembly can adjust the curved surface of the multi-curved surface adjustable formwork by changing its length.

2. The multi-faceted formwork system for concrete thin-shell structures according to claim 1, characterized in that, The adjusting screw assembly includes an adjusting screw, an upper screw rod with a first thread direction, a lower screw rod with a second thread direction, and a basket nut threadedly connected between the upper screw rod and the lower screw rod.

3. The multi-faceted formwork system for concrete thin-shell structures of claim 1, wherein, The basket nut is used to adjust the synchronous extension and contraction of the upper screw rod and the lower screw rod.

4. A method of constructing a multi-faceted formwork system of a concrete shell structure according to any one of claims 1 to 3, characterized in that, The adjusting screw assembly includes a connecting piece and an eye ring arranged in sequence at the upper end and the lower end of the adjusting screw. The connecting piece is a ring or a hook. The eye ring and the connecting piece are connected in a ring-to-ring manner. The eye ring at the upper end of the adjusting screw is arranged on the multi-curved surface adjustable formwork. The eye ring at the lower end of the adjusting screw is arranged on the ground through a cushion block. The vertical row frame includes at least a vertical rod. The vertical rod includes a steel pipe, a top support, and a bottom support. The top support is supported on the multi-curved surface adjustable formwork through a square wood arranged in the top support. The bottom support is arranged on the ground through a cushion block. The utility model relates to a multi-curved surface adjustable formwork, a vertical row frame, a plurality of adjusting screw assemblies, and a method for constructing a multi-curved surface adjustable formwork. The base point and the inflection point of the multi-curved surface adjustable formwork are determined by a three-dimensional modeling method. The eye ring is arranged at the inflection point of the multi-curved surface adjustable formwork. The position of the vertical row frame is determined by a three-dimensional modeling method. The adjusting screw assembly is arranged between the ground and the inflection point of the multi-curved surface adjustable formwork. The two ends of the adjusting screw are arranged at the inflection point of the multi-curved surface adjustable formwork and the ground, respectively. The extension and contraction length of the adjusting screw is adjusted to adapt the multi-curved surface adjustable formwork to the curved surface of the concrete shell structure to be cast.

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