Composite formwork of steel reinforcement framework and UHPC (Ultra High Performance Concrete)

Abstract

The utility model provides a composite formwork of a reinforcement cage and UHPC (Ultra High Performance Concrete), which belongs to the technical field of UHPC formworks, and comprises a UHPC formwork formed by solidifying ultra high performance concrete, the reinforcement cage for improving fracture resistance is implanted in the UHPC formwork, and the reinforcement cage comprises rectangular reinforcements and positioning reinforcements; the two rectangular steel bars are arranged in parallel up and down to form a group, and the rectangular steel bars are horizontally embedded into the UHPC concrete formwork; the positioning steel bars are longitudinally implanted into the UHPC concrete formwork, and the multiple positioning steel bars are arranged along the four side edges of the rectangular steel bars; the problem that the UHPC formwork structure is low in strength is solved, and the composite formwork is large in overall strength, high in loading capacity and high in application durability.

Description

Technical Field

[0001] This utility model relates to the field of UHPC mold technology, specifically to a composite mold of steel reinforcement skeleton and UHPC concrete. Background Technology

[0002] Steel molds are a relatively traditional type of steel mold used to complete the casting and shaping of concrete, providing shape and support for the concrete. However, they are heavy and their installation and disassembly are relatively complex. Mold shells made of UHPC concrete have high strength, high durability and good ductility, and are now also used in the concrete casting industry.

[0003] For example, patent CN213732387U discloses a concrete mold, including a concrete mold and a lifting plate. The hollow area inside the concrete mold extends through the top wall of the concrete mold. A rotating hole is opened on the left side of the outer wall of the concrete mold, extending through the left side wall of the concrete mold to the interior of the concrete mold. A limiting groove is opened on the rear side wall of the outer wall of the concrete mold, extending through the rear side wall of the concrete mold to the interior of the concrete mold. When the cam rotates, the lifting plate moves up and down inside the sliding groove through the first sliding block and the second sliding block to adjust the volume of the hollow area inside the concrete mold. This avoids the need to change the mold when a batch of concrete blocks of different sizes needs to be produced urgently, which would increase the production cost. However, if the mold shell of high-performance concrete is not equipped with a skeleton support inside, the structural strength of UHPC may be significantly reduced, especially when subjected to loads or external forces, which may easily lead to structural failure or damage. In addition, the durability of the concrete mold shell will also be reduced, and defects such as cracks may appear on the surface with the increase of service time.

[0004] In summary, designing a UHPC concrete formwork with high structural strength, strong load-bearing capacity, and high durability becomes particularly important. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of UHPC concrete formwork in the background art, and to design a UHPC concrete formwork with high structural strength, strong load-bearing capacity, and high durability.

[0006] To achieve the above objectives, the technical approach adopted by this utility model is as follows: In addressing the problem of low structural strength of UHPC concrete mold shells in the prior art, a steel reinforcement skeleton is implanted into the UHPC concrete mold shell, and the steel reinforcement is rationally distributed. Adjacent horizontal and vertical steel reinforcements are connected by snap-fit ​​assembly, which facilitates installation. The implanted steel reinforcement skeleton reduces the amount of UHPC concrete required for mold shell preparation, thereby reducing the cost of UHPC concrete.

[0007] Based on the above technical concept, the technical solution adopted by this utility model is as follows:

[0008] A composite formwork of steel reinforcement skeleton and UHPC concrete includes a UHPC concrete formwork solidified from ultra-high performance concrete, and a steel reinforcement skeleton for increasing flexural strength is embedded inside the UHPC concrete formwork. The steel reinforcement skeleton includes rectangular steel bars and positioning steel bars. Two rectangular steel bars are arranged side by side vertically as a group, and the rectangular steel bars are horizontally embedded inside the UHPC concrete formwork. The positioning steel bars are longitudinally embedded inside the UHPC concrete formwork, and multiple positioning steel bars are arranged along the four sides of the rectangular steel bars.

[0009] Further defining the above technical solution, the UHPC concrete formwork has a supporting steel frame embedded at the four corners inside, and the supporting steel frame is snapped into place at the four corners of the rectangular steel bars.

[0010] Further defining the above technical solution, the rectangular steel bars have rounded corners; the supporting steel frame has multiple longitudinally spaced grooves with limiting corner blocks fixedly installed in the grooves; the rectangular steel bars are fitted between the supporting steel frame and the limiting corner blocks.

[0011] Further defining the above technical solution, the two rectangular steel bars are fitted with locking blocks; the locking blocks have slots that mate with the rectangular steel bars, and the locking blocks have installation openings that communicate with the slots; the locking blocks also have through holes.

[0012] Further defining the above technical solution, the rectangular steel bars, the locking blocks, and the positioning steel bars are interconnected by reinforcement components; the reinforcement components include two sets of cylindrical rods and gaskets fixed to the end faces of the cylindrical rods; the cylindrical rods and gaskets are laterally supported inside the UHPC concrete formwork.

[0013] Further defining the above technical solution, the rectangular steel bar has a positioning groove on its surface; a positioning seat is embedded in the positioning steel bar, and a circular groove is provided on the positioning seat.

[0014] Further defining the above technical solution, the cylindrical rod is connected through the circular groove, the positioning groove, and the through hole, and the gasket is attached to the surface of the card block.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) High structural strength: The steel reinforcement skeleton embedded in the UHPC concrete formwork can effectively improve the structural strength of the side wall of the UHPC concrete formwork, increase the load capacity of the UHPC concrete formwork, and avoid damage to the formwork when subjected to external forces.

[0017] (2) Easy assembly of steel reinforcement cage: The main body of the steel reinforcement cage includes rectangular steel bars distributed horizontally and vertically and positioning steel bars. The two can be quickly assembled through clamps and reinforcement parts. Support steel frames are set at the four corners of the rectangular steel bars. The overall steel reinforcement cage structure is stable and has high strength.

[0018] (3) Reinforcement and support: The reinforcement components are connected through cylindrical rods to the clamping blocks, rectangular steel bars and positioning steel bars. After the UHPC concrete mold is prepared, the cylindrical rods and gaskets are laterally supported in the UHPC concrete mold, which further improves the structural strength of the UHPC concrete mold and increases the durability of the mold application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic cross-sectional view of the UHPC concrete mold shell of the composite mold shell of the present invention, which is a steel reinforcement skeleton and UHPC concrete.

[0021] Figure 2 This is a schematic diagram of the UHPC concrete mold shell, which is a composite mold shell of steel reinforcement and UHPC concrete according to this utility model.

[0022] Figure 3 This is a schematic diagram of the positioning reinforcement of a composite mold shell of steel reinforcement skeleton and UHPC concrete according to the present invention.

[0023] Figure 4 This is a schematic diagram of the rectangular reinforcing bars of a composite mold shell of reinforcing steel skeleton and UHPC concrete according to the present invention.

[0024] Figure 5 This is a schematic diagram of the supporting steel frame of a composite mold shell made of steel reinforcement and UHPC concrete according to the present invention.

[0025] Figure 6 This is a schematic diagram of the limiting corner block of a composite mold shell made of steel reinforcement skeleton and UHPC concrete according to the present invention.

[0026] Figure 7 This is a schematic diagram of the cylindrical rod of a composite mold shell made of steel reinforcement and UHPC concrete according to this utility model.

[0027] Figure 8 This is a schematic diagram of the locking block of a composite mold shell of steel reinforcement skeleton and UHPC concrete according to the present invention.

[0028] Among them, 1. UHPC concrete formwork; 2. rectangular steel bar; 21. positioning groove; 3. positioning steel bar; 31. positioning seat; 32. circular groove; 4. supporting steel frame; 5. rounded corner; 6. embedded groove; 7. limiting corner block; 8. locking block; 81. locking groove; 82. installation port; 83. perforation; 9. reinforcement component; 91. cylindrical rod; 92. gasket. Detailed Implementation

[0029] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0030] Example 1

[0031] This embodiment provides a composite formwork of a steel reinforcement cage and UHPC concrete, such as... Figures 1-6 As shown, it includes a UHPC concrete formwork 1 formed by solidification of ultra-high performance concrete. A steel reinforcement skeleton for increasing flexural strength is embedded inside the UHPC concrete formwork 1. The steel reinforcement skeleton includes rectangular steel bars 2 and positioning steel bars 3. Two rectangular steel bars 2 are arranged side by side vertically as a group, and the rectangular steel bars 2 are horizontally embedded inside the UHPC concrete formwork 1. The positioning steel bars 3 are vertically embedded inside the UHPC concrete formwork 1, and multiple positioning steel bars 3 are arranged along the four sides of the rectangular steel bars 2.

[0032] The UHPC concrete formwork 1 has a supporting steel frame 4 embedded at the four corners inside. The supporting steel frame 4 is snapped into place at the four corners of the rectangular steel bar 2.

[0033] The rectangular steel bar 2 has rounded corners 5 at its edges; the supporting steel frame 4 has multiple embedded grooves 6 at equal intervals in the longitudinal direction, and the corner blocks 7 are fixedly installed in the embedded grooves 6; the rectangular steel bar 2 is fitted between the supporting steel frame 4 and the corner blocks 7.

[0034] When preparing the composite mold shell, a steel reinforcement skeleton is implanted into the UHPC concrete mold shell 1. The main body of the steel reinforcement skeleton includes rectangular steel bars 2 distributed horizontally and vertically and positioning steel bars 3. The positioning steel bars 3 are connected to the sides of multiple sets of rectangular steel bars 2. In order to improve the overall strength of the steel reinforcement skeleton, a supporting steel frame 4 is combined at the four corners of the rectangular steel bars 2. During installation, the supporting steel frame 4 is positioned at the four corners of the multiple sets of rectangular steel bars 2 respectively, so that the rectangular steel bars 2 are placed in the inner groove 6. The supporting steel frame 4 is pushed upward, so that the rectangular steel bars 2 are fitted and installed between the supporting steel frame 4 and the limiting corner block 7. The structure at the four corners of the steel reinforcement skeleton after implantation is stable, and the steel reinforcement skeleton occupies the internal space of the UHPC concrete mold shell 1, reducing the supply of UHPC concrete and reducing the preparation cost.

[0035] Example 2

[0036] refer to Figures 3-8 Two rectangular steel bars 2 are fitted with clips 8 on their outer sides; the clips 8 have grooves 81 that mate with the rectangular steel bars 2, and the clips 8 have installation openings 82 that communicate with the grooves 81; the clips 8 also have through holes 83.

[0037] The rectangular steel bar 2, the clamping block 8, and the positioning steel bar 3 are interconnected by the reinforcing member 9; the reinforcing member 9 includes two sets of cylindrical rods 91 and a gasket 92 fixed to the end face of the cylindrical rod 91; the cylindrical rods 91 and the gasket 92 are laterally supported inside the UHPC concrete formwork 1.

[0038] The rectangular steel bar 2 has a positioning groove 21 on its surface; the positioning steel bar 3 has a positioning seat 31 embedded in it, and the positioning seat 31 has a circular groove 32.

[0039] The cylindrical rod 91 is connected through the circular groove 32, the positioning groove 21 and the through hole 83, and the gasket 92 is attached to the surface of the card block 8.

[0040] Two adjacent rectangular steel bars 2 are assembled together by a locking block 8. The rectangular steel bars 2 enter the locking groove 81 inside the locking block 8 through the installation port 82. The positioning groove 21 on the rectangular steel bar 2 is aligned with the through hole 83 in the locking block 8. Then, the reinforcing member 9 is installed on the locking block 8. The cylindrical rod 91 in the reinforcing member 9 passes through the positioning groove 21 and the through hole 83, and the gasket 92 is fitted and supported on the side of the locking block 8. Then, the positioning steel bar 3 is assembled on the side of the rectangular steel bar 2. The positioning seat 31 on the positioning steel bar 3 is aligned with the position of the locking block 8. The positioning seat 31 is sleeved on the outside of the cylindrical rod 91 through the circular groove 32, so that the positioning steel bar 3 can be quickly positioned and assembled on the rectangular steel bar 2. The steel bar skeleton is easy to assemble. The assembled skeleton is implanted into the UHPC concrete mold shell 1. After the composite mold shell is formed, the reinforcing member 9 is horizontally supported in the UHPC concrete, which further improves the structural strength of the composite mold shell. Its load-bearing capacity and durability are both improved.

[0041] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this utility model to facilitate understanding and application by those skilled in the art. It should not be construed that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of this utility model, without requiring creative effort. Therefore, any simple improvements made to this utility model by those skilled in the art based on its disclosure should be within the protection scope of this utility model.

Claims

1. A composite formwork of reinforced steel frame and UHPC concrete, comprising a UHPC concrete formwork (1) formed by solidification of ultra-high performance concrete, characterized in that, The UHPC concrete formwork (1) is internally fitted with a steel reinforcement skeleton to increase flexural strength. The steel reinforcement skeleton includes rectangular steel bars (2) and positioning steel bars (3). Two rectangular steel bars (2) are arranged side by side vertically to form a group, and the rectangular steel bars (2) are horizontally inserted into the UHPC concrete formwork (1); The positioning reinforcement (3) is longitudinally inserted into the UHPC concrete formwork (1), and multiple positioning reinforcements (3) are provided along the four sides of the rectangular reinforcement (2).

2. The composite formwork of reinforcing cage and UHPC concrete according to claim 1, characterized in that, The UHPC concrete formwork (1) has a supporting steel frame (4) embedded in the four corners inside. The supporting steel frame (4) is installed at the four corners of the rectangular steel bar (2).

3. The composite formwork of reinforcing cage and UHPC concrete according to claim 2, characterized in that, Rectangular steel bars (2) with rounded corners (5); The supporting steel frame (4) has multiple embedded grooves (6) spaced longitudinally at equal intervals, and limit corner blocks (7) are fixedly installed in the embedded grooves (6); The rectangular steel bar (2) is fitted between the supporting steel frame (4) and the limiting corner block (7).

4. The composite formwork of reinforcing cage and UHPC concrete according to claim 1, characterized in that, Two rectangular steel bars (2) are fitted with clips (8) on their exterior; The card block (8) has a slot (81) that mates with the rectangular steel bar (2), and the card block (8) has an installation port (82) that communicates with the slot (81); The card block (8) also has a perforation (83).

5. The composite formwork of reinforcing cage and UHPC concrete according to claim 4, characterized in that, The rectangular steel bar (2), the clamp (8), and the positioning steel bar (3) are connected to each other by the reinforcing member (9); The reinforcement component (9) includes two sets of cylindrical rods (91) and a washer (92) fixed to the end face of the cylindrical rods (91); The cylindrical rod (91) and the gasket (92) are laterally supported inside the UHPC concrete formwork (1).

6. The composite formwork of steel reinforcement cage and UHPC concrete according to claim 5, characterized in that, A rectangular steel bar (2) has a positioning groove (21) on its surface; A positioning seat (31) is fitted into the positioning steel bar (3), and a circular groove (32) is provided on the positioning seat (31).

7. The composite formwork of reinforcing cage and UHPC concrete according to claim 6, characterized in that, The cylindrical rod (91) is connected through the circular groove (32), the positioning groove (21) and the through hole (83), and the gasket (92) is attached to the surface of the card block (8).

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