Three-dimensional curved face brick arch splicing unit and three-dimensional curved face arch crown system

Abstract

The utility model discloses a three-dimensional curved face brick arch splicing unit and a three-dimensional curved face vault system, and relates to the technical field of assembly type vaults, the three-dimensional curved face brick arch splicing unit comprises a three-dimensional curved face brick arch body and a keel frame, the three-dimensional curved face brick arch body comprises a three-dimensional curved face brick body and a UHPC high-strength concrete pouring body, the three-dimensional curved face brick body is a three-dimensional curved face formed by splicing and building a plurality of brick bodies, filling intervals are arranged between the brick bodies, and the UHPC high-strength concrete pouring bodies are used for being integrally poured on the outer side of the three-dimensional curved face brick body and the filling intervals. The top of the keel frame is used for being connected with a concrete main body structure, and the bottom of the keel frame is used for being detachably and fixedly connected with a three-dimensional curved brick arch body. The structure is simple, construction is convenient, integrity is good, the curved surface is smooth, precision is high, dead weight is light, and cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled vaults, in particular to a three-dimensional curved brick arch splicing unit and a three-dimensional curved vault system. Background Art

[0002] Existing three-dimensional curved brick arch systems are primarily constructed using fired brick masonry. This requires precise measurement and sophisticated masonry techniques to ensure brickwork accuracy and structural integrity. Furthermore, the brickwork's tightness must be carefully considered during the masonry process to ensure its robustness. These three-dimensional curved brick arches are heavy, limited in scale, and require additional reinforcement at the edges.

[0003] Existing three-dimensional curved brick arch systems are also achieved through dry hanging systems. In these systems, each brick requires metal fittings to connect to the keel, resulting in numerous components and a high overall weight. To achieve a perfect curved surface, high-precision subdivision is required, resulting in small modules, large quantities, and high costs. Utility Model Content

[0004] The purpose of the utility model is to provide a three-dimensional curved brick arch splicing unit and a three-dimensional curved vault system to solve the problems existing in the above-mentioned prior art. The unit has a simple structure, convenient construction, good integrity, smooth curved surface, high precision, light weight and effectively reduces costs.

[0005] To achieve the above purpose, the present invention provides the following solutions:

[0006] The utility model provides a three-dimensional curved brick arch splicing unit, comprising: a three-dimensional curved brick arch body and a keel frame, the three-dimensional curved brick arch body comprising a three-dimensional curved brick body and a UHPC high-strength concrete casting body, the three-dimensional curved brick body being a three-dimensional curved surface formed by piecing together a plurality of brick bodies, and a filling gap being provided between each of the brick bodies, the UHPC high-strength concrete casting body being used to be integrally cast on the outer side of the three-dimensional curved brick body and each of the filling gaps; the top of the keel frame being used to be connected to the concrete main structure, and the bottom of the keel frame being used to be detachably fixedly connected to the three-dimensional curved brick arch body.

[0007] Preferably, a U-shaped dovetail groove is provided on the outside of the brick body, and the U-shaped dovetail groove is connected to the filling gap. The U-shaped dovetail groove includes a first vertical groove, a second vertical groove and a transverse groove. The transverse groove is provided at the bottom of one side of the brick body and is connected to the bottom surface of the brick body. The bottom of the first vertical groove is connected to one end of the transverse groove, and the other end is connected to the top surface of the brick body. The bottom of the second vertical groove is connected to one end of the transverse groove away from the first vertical groove, and the other end is connected to the top surface of the brick body.

[0008] Preferably, the UHPC high-strength concrete casting body includes a first casting body, a second casting body and a third casting body. The first casting body, the second casting body and the third casting body are cast as a whole and are all made of UHPC high-strength concrete. The first casting body is arranged in the filling gap to connect the adjacent brick bodies, the second casting body is cast in the U-shaped dovetail groove, and the third casting body is cast on the outside of the three-dimensional curved brick body.

[0009] Preferably, the thickness of the third cast body is 20-30 mm.

[0010] Preferably, it further comprises a plurality of flexible connectors, a plurality of UHPC reinforcement wrapping members and a plurality of connecting bolts, the bottom end of each of the flexible connectors being embedded and fixed in the top of the three-dimensional curved brick arch body, the UHPC reinforcement wrapping member being cast and wrapped around the portion of the flexible connector protruding from the UHPC high-strength concrete casting body and being integrated and fixedly connected with the UHPC high-strength concrete casting body, a connecting hole being provided at the top of the flexible connector, the connecting bolt passing through the connecting hole and being fixedly connected to the keel frame, and the diameter of the connecting hole being larger than the diameter of the connecting bolt.

[0011] Preferably, the keel frame is formed by welding bidirectional square steel tubes.

[0012] Preferably, it further comprises a plurality of metal hangers, the bottom ends of the metal hangers are used for fixed connection with the keel frame, and the top ends of the metal hangers are used for fixed connection with the concrete main structure.

[0013] Preferably, the top end of the metal hanger is connected to the concrete body by fixing through a structural plate, welding embedded parts, or post-installed expansion bolts.

[0014] The utility model also provides a three-dimensional curved vault system, comprising a plurality of three-dimensional curved brick arch splicing units as described in any one of the above items.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The utility model provides a three-dimensional curved brick arch splicing unit and a three-dimensional curved vault system, which include a plurality of masonry blocks assembled to form a three-dimensional curved brick body, and a UHPC high-strength concrete casting body is formed by pouring UHPC high-strength concrete in the filling intervals between the masonry blocks and on the outside of the masonry blocks, so that the masonry blocks are connected into a whole through the UHPC high-strength concrete casting body to form a three-dimensional curved brick arch body, and the three-dimensional curved brick arch body is connected to the keel frame through a plurality of flexible connectors, and then the keel frame is connected to the concrete main structure. The structure is simple, the integrity is better, the construction is more convenient, the curved surface is smooth, the precision is high, the dead weight is light, and the cost is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A cross-sectional view of a three-dimensional curved brick arch splicing unit provided by the utility model;

[0019] Figure 2 This is a front view of a brick body in a three-dimensional curved brick arch splicing unit provided by the present invention;

[0020] Figure 3 This is a schematic diagram of the structure in which the metal hanger and the concrete body in the three-dimensional curved brick arch splicing unit provided by the present invention are fixed by means of a through-structure plate;

[0021] Figure 4 This is a schematic diagram of the structure in which the metal hanger and the concrete body in the three-dimensional curved brick arch splicing unit provided by the present invention are fixed by welding with embedded parts;

[0022] Figure 5 This is a structural diagram of a three-dimensional curved brick arch splicing unit provided by the present invention, in which a metal hanger and a concrete body are fixed by post-installed expansion bolts;

[0023] Figure 6 A top view of the three-dimensional curved dome system in Example 2;

[0024] Figure 7 is a cross-sectional view of the three-dimensional curved dome system in Example 2;

[0025] Figure 8 This is a brick layout diagram of the top plate of the three-dimensional curved vault system in Example 2;

[0026] Figure 9 This is a partial expansion diagram of a partial dome of the three-dimensional curved dome system in Example 2;

[0027] Figure 10 A partial brick arrangement diagram of a column in the three-dimensional curved vault system in Example 2;

[0028] In the figure: 100, three-dimensional curved brick arch splicing unit; 1, three-dimensional curved brick arch body; 2, UHPC high-strength concrete casting body; 3, flexible connector; 4, keel frame; 5, bolts; 6, metal hanger; 7, concrete main structure; 8, brick body; 9, U-shaped dovetail groove; 10, first vertical groove; 11, second vertical groove; 12, horizontal groove; 14, column. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The purpose of the utility model is to provide a three-dimensional curved brick arch splicing unit and a three-dimensional curved vault system to solve the problems existing in the above-mentioned prior art. The system has a simple structure, convenient construction, good integrity, smooth curved surface, high precision, light weight, and effectively reduces costs.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0032] Example 1

[0033] This embodiment provides a three-dimensional curved brick arch splicing unit, such as Figures 1 to 5As shown, it includes: a three-dimensional curved brick arch body 1 and a keel frame 4, the three-dimensional curved brick arch body 1 includes a three-dimensional curved brick body 8 and a UHPC high-strength concrete casting body 2, the three-dimensional curved brick body 8 is a three-dimensional curved surface formed by assembling multiple brick bodies 8, and a filling gap is provided between each brick body 8, the UHPC high-strength concrete casting body 2 is used to be integrally cast on the outside of the three-dimensional curved brick body 8 and each filling gap, and the UHPC high-strength concrete is cast to form the UHPC high-strength concrete casting body 2, and the UHPC high-strength concrete flows, penetrates, absorbs and solidifies to form a whole, namely the three-dimensional curved brick arch body 1, and the UHPC high-strength concrete has high fluidity, high strength, good self-compacting performance and good toughness; The top of the keel frame 4 is used to connect with the concrete main structure 7, and the bottom of the keel frame 4 is used to be detachably fixedly connected to the three-dimensional curved brick arch body. Multiple masonry blocks are assembled to form a three-dimensional curved brick body 8, and UHPC high-strength concrete is poured in the filling intervals between each masonry block and on the outside of the masonry block to form a UHPC high-strength concrete casting body 2, so that each masonry block is connected into a whole through the UHPC high-strength concrete casting body 2 to form a three-dimensional curved brick arch body 1, and the three-dimensional curved brick arch body 1 is connected to the keel frame 4, and then the keel frame 4 is connected to the concrete main structure 7. The structure is simple, the integrity is better, the construction is more convenient, the curved surface is smooth, the precision is high, the dead weight is light, and the cost is effectively reduced.

[0034] In a preferred scheme of this embodiment, a U-shaped dovetail groove 9 is provided on the outside of the brick body 8, and the U-shaped dovetail groove 9 is connected to the filling interval. The U-shaped dovetail groove 9 includes a first vertical groove 10, a second vertical groove 11 and a transverse groove 12. The transverse groove 12 is provided at the bottom of one side of the brick body 8 and is connected to the bottom surface of the brick body 8. The bottom of the first vertical groove 10 is connected to one end of the transverse groove 12, and the other end is connected to the top surface of the brick body 8. The bottom of the second vertical groove 11 is connected to one end of the transverse groove 12 away from the first vertical groove 10, and the other end is connected to the top surface of the brick body 8. By providing the U-shaped dovetail groove 9, the brick body 8 and the UHPC high-strength concrete casting body 2 can be better embedded, thereby effectively improving the integrity of the three-dimensional curved brick arch body 1.

[0035] In a preferred solution of this embodiment, the UHPC high-strength concrete casting body 2 includes a first casting body, a second casting body and a third casting body. The first casting body, the second casting body and the third casting body are cast as a whole and are all made of cast UHPC high-strength concrete. The first casting body is arranged in the filling gap to connect adjacent brick bodies 8, the second casting body is cast in the U-shaped dovetail groove 9, and the third casting body is cast on the outside of the three-dimensional curved brick body 8. The adjacent brick bodies 8 are bonded by the first casting body, and the embedding effect of the brick body 8 and the third casting body is increased by the second casting body, thereby effectively improving the integrity.

[0036] In a preferred solution of this embodiment, the thickness of the third cast unit is 20-30 mm.

[0037] In a preferred solution of this embodiment, the three-dimensional curved brick arch splicing unit further includes a plurality of UHPC reinforcing wrappings, a plurality of flexible connectors 3 and a plurality of connecting bolts, one end of each flexible connector 3 is embedded and fixed to the top of the three-dimensional curved brick arch body 1; the flexible connector 3 is a metal part, and a connecting hole is provided on the top of the metal part, and the connecting bolt passes through the connecting hole and is fixedly connected to the keel frame, and the diameter of the connecting hole is larger than the diameter of the connecting bolt, so that the metal part and the keel frame are softly connected, and the UHPC reinforcing wrappings are fixed to the keel frame. The UHPC reinforcement wrapping piece is cast and wrapped around the portion of the flexible connector 3 protruding from the UHPC high-strength concrete casting body and is fixedly connected to the UHPC high-strength concrete casting body. The thickness of the UHPC reinforcement wrapping piece is 20~30mm. The UHPC reinforcement wrapping piece can enhance the stability of the connection between the metal part and the UHPC high-strength concrete casting body. The UHPC reinforcement wrapping piece is formed by casting UHPC high-strength concrete on the portion of the metal part protruding from the UHPC high-strength concrete casting body before the initial setting of the UHPC high-strength concrete casting body.

[0038] In a preferred solution of this embodiment, the keel frame 4 is made of bidirectional square steel pipes welded together, which has a simple structure, is easy to obtain materials, and ensures uniform distribution of hanging points.

[0039] In a preferred solution of this embodiment, the shape of the three-dimensional curved brick arch body 1 is a three-dimensional curved shape formed by the intersection of two curved surfaces.

[0040] In a preferred solution of this embodiment, the three-dimensional curved brick arch splicing unit also includes a plurality of metal hangers 6, the bottom ends of the metal hangers 6 are used to be fixedly connected to the keel frame 4, and the top ends of the metal hangers 6 are used to be fixedly connected to the concrete main structure 7. The metal hangers 6 are evenly arranged to ensure that the overall weight of the three-dimensional curved brick arch body 1 is evenly distributed on each metal tie rod.

[0041] In a preferred solution of this embodiment, the top end of the metal hanger 6 is connected to the concrete body by fixing through a structural plate, welding an embedded part, or fixing with a post-installed expansion bolt 5 .

[0042] Example 2

[0043] This embodiment also provides a three-dimensional curved dome system, such as Figures 6-10 As shown, it includes multiple three-dimensional curved brick arch splicing units, a foundation and a concrete main structure 7 as in Example 1. The bottom of the three-dimensional curved brick arch body is connected to the foundation, and the top of the three-dimensional curved brick arch body is connected to the keel frame 4 through a connector. The keel frame 4 is connected to the concrete main structure 7, as shown in FIG. Figure 6 As shown, the three-dimensional curved vault system is composed of four three-dimensional curved brick arch splicing units. Figure 7 The bottom corner of the three-dimensional curved brick arch splicing unit is supported on column 14. Figure 8 The top plate brick layout diagram of the prefabricated sintered brick three-dimensional curved vault example is shown. Figure 9 The partial expansion diagram of the vault of the three-dimensional curved vault system is shown. Figure 10 A partial brick arrangement diagram of column 14 in the three-dimensional curved vault system is given.

[0044] Example 3

[0045] This embodiment also provides a method for manufacturing the three-dimensional curved dome system as described in the second embodiment.

[0046] S1. First, according to the design requirements, each curved vault model is built using BIM software. Ribs are CNC-carved using longitude and latitude lines. A large mold base is laid on a horizontal site in the component factory, and CNC-carved ribs are placed on the large mold base to form a mold. The mold surface is then processed and shaped using wood boards, putty, and other methods.

[0047] S2. Arrange the decorative bricks 8 within the stabilized large mold according to the predetermined brick arrangement plan. Rubber strips are placed between the decorative bricks and tied with steel wire. The rubber strips are positioned between adjacent bricks, near the inner side of the three-dimensional curved brick arch body, to form a filling gap between adjacent bricks. The filling gap is connected to the U-shaped dovetail groove 9. The rubber strips create a filling gap between adjacent bricks 8, both vertically and horizontally, allowing UHPC high-strength concrete to be poured within the filling gap to connect the adjacent bricks 8. Furthermore, the rubber strips seal the filling gap at one end, near the inner side of the three-dimensional curved brick arch body, to prevent the UHPC high-strength concrete from flowing out of the inner side of the three-dimensional curved brick arch body during pouring. The rubber strips are placed between the bricks 8 and connected to the bricks 8 via steel wire. The selected decorative bricks are then assembled in an orderly manner on the mold according to the predetermined design effect, completing the preliminary design form. The above production process combines manual and machine work, resulting in standardized dimensions and high precision, meeting the standards of a fine decoration. In order to increase the bonding surface and reduce the weight of the brick, a U-shaped dovetail groove 9 is cut on the brick surface to ensure the firmness of the cast body;

[0048] S3. Pour UHPC high-strength concrete evenly layer by layer on the back of the three-dimensional curved brick body. UHPC high-strength concrete is a new material that has emerged in recent years. It is an ultra-high-strength cement-based material with high strength, high toughness and low porosity. Its basic preparation principle is to increase the fineness and activity of the tissue components, without using coarse aggregates, so as to minimize the pores and microcracks inside the material in order to obtain ultra-high strength and high durability. Its main components are quartz sand, water reducer, polymer, fine aggregate, high-performance modifier, etc. Its characteristics are high strength, high toughness, durability, rapid setting and strong plasticity. Use a special spray gun to evenly pour the pre-configured UHPC high-strength concrete on the back of the assembled brick body 8. The pouring process should be uniform and thickened layer by layer, and the final thickness should be 20-30mm;

[0049] S4. The length of the flexible connector 3 is calculated through simulation on the model. Before the initial setting of the UHPC high-strength concrete casting, a metal piece is inserted at the corresponding position, and UHPC high-strength concrete is poured again within 20-30 mm of the metal piece extending out of the UHPC high-strength concrete casting.

[0050] S5. Weld the keel steel frame in advance, and connect the metal parts to the keel steel frame one by one through the connecting bolts 5.

[0051] S6. Let it stand for more than 24 hours. After the UHPC high-strength concrete is completely solidified, it can be lifted and demoulded. Then start cleaning the surface of the fired bricks to prevent leakage and contamination.

[0052] S7. The completed three-dimensional curved brick arch splicing unit is transported to the location where it is to be installed, and is hoisted onto the concrete structure body 7 using a metal hanger 6. The fixing methods include fixing through the structural plate, welding of embedded parts, and fixing with post-installed expansion bolts 5.

[0053] The beneficial effect of the present invention is that the present invention adopts a sintered brick prefabricated reverse-hit ceiling panel system that adopts a technical method that combines masonry bonding and hanging. The curvature of the curved surface is accurate, the connection is natural, the engineering prefabrication rate is high, materials are saved, engineering waste is reduced, and the construction period is shortened. The prefabricated modules are made of UHPC concrete casting, which can achieve larger masonry modules, better integrity, and more convenient construction. The assembled prefabricated sintered brick reverse-hit three-dimensional curved vault system shows the effect of a perfect solid brick arch while achieving diversity in scale and applicable space. According to different spatial effect requirements, different scales and different module division methods can be adopted. The masonry bricks can be arranged in different ways, and the materials can also be selected from machine-made bricks or handmade bricks. It is not only used indoors and outdoors in buildings, but also in structures, landscapes, etc., showing the characteristics of different types of buildings and different spaces. It has a wide range of applications.

[0054] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A three-dimensional curved brick arch splicing unit, characterized by: include: A three-dimensional curved brick arch body, comprising a three-dimensional curved brick body and a UHPC high-strength concrete casting body. The three-dimensional curved brick body is a three-dimensional curved surface formed by piecing together multiple bricks, and filling gaps are provided between each of the bricks. The UHPC high-strength concrete casting body is used to be integrally cast on the outside of the three-dimensional curved brick body and each of the filling gaps; as well as A keel frame, the top of which is used to be connected to the concrete main structure, and the bottom of which is used to be fixedly connected to the three-dimensional curved brick arch body in a detachable manner.

2. The three-dimensional curved brick arch splicing unit according to claim 1, characterized in that: A U-shaped dovetail groove is provided on the outside of the brick body, and the U-shaped dovetail groove is connected to the filling gap. The U-shaped dovetail groove includes a first vertical groove, a second vertical groove and a horizontal groove. The horizontal groove is provided at the bottom of one side of the brick body and is connected to the bottom surface of the brick body. The bottom of the first vertical groove is connected to one end of the horizontal groove, and the other end is connected to the top surface of the brick body. The bottom of the second vertical groove is connected to one end of the horizontal groove away from the first vertical groove, and the other end is connected to the top surface of the brick body.

3. The three-dimensional curved brick arch splicing unit according to claim 2, characterized in that: The UHPC high-strength concrete casting body includes a first casting body, a second casting body and a third casting body. The first casting body, the second casting body and the third casting body are cast as a whole and are all made of UHPC high-strength concrete. The first casting body is cast in the filling gap to connect the adjacent brick bodies, the second casting body is cast in the U-shaped dovetail groove, and the third casting body is cast on the outside of the three-dimensional curved brick body.

4. The three-dimensional curved brick arch splicing unit according to claim 3, characterized in that: The thickness of the third cast body is 20-30 mm.

5. The three-dimensional curved brick arch splicing unit according to claim 4, characterized in that: It also includes multiple flexible connectors, multiple UHPC reinforcement wrapping parts and multiple connecting bolts. The bottom end of each flexible connector is buried and fixed in the top of the three-dimensional curved brick arch body. The UHPC reinforcement wrapping part is cast and wrapped around the part of the flexible connector protruding from the UHPC high-strength concrete casting body and is integrated and fixedly connected with the UHPC high-strength concrete casting body. A connecting hole is provided on the top of the flexible connector. The connecting bolt passes through the connecting hole and is fixedly connected to the keel frame. The diameter of the connecting hole is larger than the diameter of the connecting bolt.

6. The three-dimensional curved brick arch splicing unit according to claim 1, characterized in that: The keel frame is formed by welding bidirectional square steel pipes.

7. The three-dimensional curved brick arch splicing unit according to claim 1, characterized in that: It also includes a plurality of metal hangers, the bottom ends of the metal hangers are used to be fixedly connected to the keel frame, and the top ends of the metal hangers are used to be fixedly connected to the concrete main structure.

8. The three-dimensional curved brick arch splicing unit according to claim 7, characterized in that: The top end of the metal hanger is connected to the concrete body by fixing through a structural plate, welding an embedded part, or fixing with a post-installed expansion bolt.

9. A three-dimensional curved vault system, characterized by: It comprises a plurality of three-dimensional curved brick arch splicing units according to any one of claims 1 to 8.

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