Fabricated pier column non-dismantling formwork

Abstract

The invention discloses a fabricated pier column non-dismantling formwork, and relates to the technical field of building structures, the fabricated pier column non-dismantling formwork comprises arc-shaped splicing blocks, at least two arc-shaped splicing blocks are sequentially spliced in the annular direction to form a cylindrical unit, and a plurality of cylindrical units are sequentially spliced in the longitudinal direction; uniformly-distributed bosses are arranged on the inner walls of the arc-shaped assembling blocks, circular-truncated-cone-shaped annular fasteners or combined fasteners are installed on the bosses at the butt joint positions of the adjacent arc-shaped assembling blocks, the circular-truncated-cone-shaped annular fasteners or the combined fasteners are connected with L-shaped fasteners, and the adjacent L-shaped fasteners are connected through tie bars; and the L-shaped fasteners and the arc-shaped splicing blocks are fixed through connecting pieces. The stability and the stress performance of the cylindrical formwork are guaranteed, and the lateral pressure resistance and the deformation resistance of a formwork system in the concrete pouring process are effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of building structures, and in particular to an assembled pier column non-disassembly formwork. Background Art

[0002] Unlike general rectangular formwork, circular building column formwork is mostly customized with metal formwork. Traditional metal formwork is durable and can withstand high pressure, but it may be easily corroded and fire-resistant over time, and requires more manpower during transportation and installation; however, traditional wooden formwork is less sturdy and may need to be replaced more frequently, and is easily damaged when exposed to moisture. Wooden formwork uses renewable natural resources, but due to the need for frequent replacement, its environmental impact may be higher. Currently, the non-dismantling formwork technology has become one of the hot topics in the construction industry. It is in line with the concept of green building and sustainable development because it can simplify the construction process, improve construction efficiency, and reduce material waste and the generation of construction waste. However, in practical applications, the existing non-dismantling formwork system still faces some challenges, such as:

[0003] Chinese utility model patent CN215210490U discloses a mortise and tenon combined ultra-high performance concrete permanent formwork, comprising a first arc-shaped permanent column formwork and a second arc-shaped permanent column formwork, the first arc-shaped permanent column formwork and the second arc-shaped permanent column formwork can be spliced ​​and arranged, the first arc-shaped permanent column formwork is provided with a first tenon on one lateral side and a first mortise on the other side, the second arc-shaped permanent column formwork is provided with a second tenon on one lateral side and a second mortise on the other side; the reserved holes of this scheme are difficult to cast or demould, and the reserved holes are prone to cause cracking of the formwork at the tongue and groove when the bolts are pre-tightened or punched later.

[0004] Chinese invention patent CN118668866A discloses a quick-installed high-resistance column non-disassembly formwork, in which the assembling blocks of the non-disassembly formwork are arc-shaped assembling blocks, and four arc-shaped assembling blocks are used to assemble a circular non-disassembly formwork on the same level; the assembling seams of this scheme are only connected by groove-shaped fasteners and bolts, and there is no support inside the entire columnar structure, resulting in a problem of insufficient formwork rigidity; and the inner side of the formwork is designed with dense tooth ribs. When the lateral size of the formwork needs to be adjusted on site, since the formwork is only vertically provided with a half-tooth rib for hanging buckles, the cross-sectional size of the formwork cannot be adjusted by cutting. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an assembled pier column non-disassembly formwork, which realizes the connection of arc-shaped assembly blocks through L-shaped fasteners, truncated cone ring fasteners or combined fasteners in conjunction with tie bars and connecting pieces, thereby ensuring the stability and force-bearing performance of the column formwork, and effectively improving the formwork system's ability to resist lateral pressure and deformation during concrete pouring.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] An embodiment of the present invention provides an assembled pier column non-disassembly formwork, including an arc-shaped assembly block, at least two arc-shaped assembly blocks are spliced ​​along the circumferential direction to form a columnar unit, and a plurality of columnar units are spliced ​​in sequence along the longitudinal direction; the inner wall of the arc-shaped assembly block is provided with evenly distributed bosses, and the bosses at the joints of adjacent arc-shaped assembly blocks are installed with truncated cone annular fasteners or combined fasteners, and the truncated cone annular fasteners or combined fasteners are connected with L-shaped fasteners, and adjacent L-shaped fasteners are connected by tie bars; the L-shaped fasteners are fixed to the arc-shaped assembly block by a connecting piece.

[0008] As a further implementation, when the columnar unit includes more than three arc-shaped assembling blocks, tie bars are connected between one L-shaped fastener and the L-shaped fasteners opposite thereto to form a plurality of triangular structures.

[0009] As a further implementation, a half boss is provided at the joint of the arc-shaped assembly block, and a quarter boss is provided at the corner of the arc-shaped assembly block; the quarter boss and its peripheral quarter boss, and the half boss and its adjacent half boss are spliced ​​into a complete boss;

[0010] A truncated cone annular fastener or a combined fastener is installed at the splicing position of the quarter boss; or, a truncated cone annular fastener or a combined fastener is installed at the splicing position of the half boss at the set position at the same time.

[0011] As a further implementation, the half boss is provided with a half countersunk hole, and the quarter boss is provided with a quarter countersunk hole;

[0012] The half countersunk hole and the half countersunk hole connected with it, and the quarter countersunk hole and the quarter countersunk hole connected with its peripheral side respectively form a combination hole, and the connecting piece passes through the combination hole to be connected with the L-shaped fastener.

[0013] As a further implementation, the combined fastener includes a strip-shaped piece and an open piece arranged in the middle of the strip-shaped piece, the open piece is nested in the boss at the joint, and a boss is nested at each of the two ends of the strip-shaped piece.

[0014] As a further implementation, the open piece is a non-closed structure, and its inner surface is adapted to the outer surface of the boss.

[0015] As a further implementation, the L-shaped fastener has a first mounting surface and a second mounting surface which are perpendicular to each other, wherein the first mounting surface is provided with a plurality of tie rod holes, and the second mounting surface is provided with bolt holes.

[0016] As a further implementation, the edges of the arc-shaped assembling blocks are provided with trapezoidal grooves or trapezoidal ribs, and the trapezoidal grooves and trapezoidal ribs of adjacent arc-shaped assembling blocks are plugged into each other.

[0017] As a further implementation, a steel mesh is provided in the arc-shaped assembly block.

[0018] As a further implementation method, the arc-shaped assembly blocks are made of UHPC or ECC material, and the L-shaped fasteners, truncated cone ring fasteners, and combined fasteners are made of stamped high-strength carbon steel material.

[0019] The beneficial effects of the present invention are as follows:

[0020] (1) The L-shaped fastener of the present invention is used in combination with a truncated cone ring fastener or a combined fastener to achieve automatic alignment and tightening between connected assembly blocks. At the same time, the L-shaped fasteners are connected by tie bars to achieve opposite tie between the formwork structures, thereby enhancing the overall stability of the formwork. At the same time, during the pouring of concrete, the tie bars can offset the internal pressure of the slurry and prevent the formwork from bulging or collapsing. This improves construction efficiency and quality and can also reduce subsequent maintenance costs.

[0021] (2) The present invention utilizes the combination hole and the corresponding fastener structure to achieve a quick, simple and stable connection. During on-site installation, it is only necessary to simply assemble the assembly blocks preliminarily, and then bolt them through the combination hole from the outside of the assembly blocks and tightly anchor them with the L-shaped fasteners. During the process, the arc-shaped assembly blocks are automatically squeezed together, and the design of the embedded head groove meets the structural requirements while also taking into account aesthetics and safety. For multiple assembled arc-shaped assembly blocks, tie bars are added at the diagonals to form a stable triangular structure to further ensure structural stability. For the combination fasteners, multiple bosses can be nested at the same time to enhance the strength of the joints.

[0022] (3) The inner wall of the assembly block of the present invention is provided with evenly distributed bosses, and the size of the template can be flexibly adjusted to the size of the template unit by cutting along the center line of the bosses in each row or column; the provided bosses not only have the function of hook connection within the template surface, but also have the function of connecting the template and the post-cast concrete, so that the template and the post-cast concrete can better coordinate the force; the connection between the assembly blocks is more firm and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0024] Figure 1a It is a partial exploded and enlarged schematic diagram of Example 1 of the present invention;

[0025] Figure 1b It is a partial assembly schematic diagram of embodiment 1 of the present invention;

[0026] Figure 1c is a partial cutaway schematic diagram of embodiment 1 of the present invention;

[0027] Figure 1d is a schematic cross-sectional view of a fastener connection according to Embodiment 1 of the present invention;

[0028] Figure 1e is a schematic diagram of the overall assembly of Embodiment 1 of the present invention;

[0029] Figure 2a is a schematic diagram of a mortise and tenon assembly block according to Embodiment 2 of the present invention;

[0030] Figure 2b It is a partial assembly and explosion diagram of Example 2 of the present invention;

[0031] Figure 3a is a schematic diagram of a reinforcement assembly block according to Embodiment 3 of the present invention;

[0032] Figure 3b It is a partial exploded and enlarged schematic diagram of Example 3 of the present invention;

[0033] Figure 3c is a partial assembly schematic diagram of embodiment 3 of the present invention;

[0034] Figure 4a It is a partial exploded and enlarged schematic diagram of Example 4 of the present invention;

[0035] Figure 4b It is a partial assembly schematic diagram of embodiment 4 of the present invention;

[0036] Figure 4c is a partial cross-sectional schematic diagram of embodiment 4 of the present invention;

[0037] Figure 4d It is a schematic diagram of the partial assembly of Example 4 of the present invention.

[0038] Among them, 10, arc-shaped assembly block; 101, boss; 102, half boss; 103, quarter boss; 104, half slot; 105, quarter slot; 106, half head slot; 107, quarter head slot; 108, combination hole; 11, mortise and tenon assembly block; 111, trapezoidal rib; 112, trapezoidal slot; 12, reinforcement assembly block; 121, steel mesh;

[0039] 21. L-shaped fastener; 211. Anchor rib hole; 212. Bolt hole; 22. Cone ring fastener; 23. Bolt; 24. Anchor rib; 25. Combined fastener; 251. Strip piece; 252. Open piece. DETAILED DESCRIPTION

[0040] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0041] Embodiment 1:

[0042] This embodiment provides a prefabricated pier column non-disassembly formwork, such as Figure 1a-Figure 1e As shown, it includes a plurality of arc-shaped assembly blocks 10, at least two arc-shaped assembly blocks 10 are spliced ​​in the circumferential direction to form a cylindrical unit, and a plurality of cylindrical units are spliced ​​in sequence in the longitudinal direction to form a cylindrical non-disassembly template with a certain height. The number of arc-shaped assembly blocks 10 contained in each cylindrical unit is determined according to the actual construction requirements, and can be two arc-shaped assembly blocks 10 docked, or three, four or more arc-shaped assembly blocks 10 spliced ​​together. The arc-shaped assembly blocks 10 are connected to each other by a truncated cone annular fastener 22, an L-shaped fastener 21 and a connecting piece.

[0043] Adjacent L-shaped fasteners 21 are connected by tie bars 24. When the columnar unit includes more than three arc-shaped assembly blocks 10, in order to further ensure the stability of the structure, tie bars 24 are added between one L-shaped fastener 21 and the L-shaped fasteners 21 opposite to it to form a triangular structure.

[0044] The inner surface of the arc-shaped assembly block 10 is evenly arranged with bosses 101, which are arranged in multiple rows and columns. The bosses 101 enhance the stability of the structure of the arc-shaped assembly block 10 and provide a reference for the assembly process. In this embodiment, the bosses 101 are truncated cone structures, that is, the longitudinal section of the bosses 101 is an isosceles trapezoid and the cross section is a circle.

[0045] A half boss 102 is arranged on the edges of each arc-shaped assembling block 10, and a quarter boss 103 is arranged on the four corners of the arc-shaped assembling block 10, so that when two adjacent arc-shaped assembling blocks 10 are assembled, the half boss 102 can be seamlessly connected to form a complete boss 101 together; the quarter boss 103 at the corner position forms a half boss 102, and when each cylindrical unit is spliced ​​with other cylindrical units, the two assembled half bosses 102 form a complete boss 101.

[0046] The complete boss 101 assembled at each corner is installed with a truncated cone annular fastener 22 and an L-shaped fastener, and the connecting piece passes through the arc-shaped assembly block 10 and is connected to the L-shaped fastener. The connecting piece in this embodiment is a bolt 23. In order to ensure the connection strength and stability, the complete boss 101 assembled from the semi-bosses 102 at a certain height of the joint surface of the arc-shaped assembly block 10 is also installed with a truncated cone annular fastener 22, an L-shaped fastener and a connecting piece.

[0047] In order to install bolts 23 and other connectors, a half countersunk hole is provided at the corresponding half boss 102, and a quarter countersunk hole is provided at the quarter boss 103, and the axial direction of the half countersunk hole and the quarter countersunk hole is perpendicular to the plate surface. Specifically, the half boss 102 is provided with a half head groove 106 and a half groove 104 from the inside, and the connected half head groove 106 and half groove 104 constitute a half countersunk hole; the quarter boss 103 at the corner is provided with a quarter head groove 107 and a quarter groove 105 from the outside to the inside, and the connected quarter head groove 107 and the quarter groove 105 constitute a quarter countersunk hole; the other half countersunk hole docked with the half countersunk hole and the three quarter countersunk holes docked with the quarter countersunk hole and its peripheral side respectively constitute a combined hole 108. The above structure realizes the neatness and beauty of the outer surface after installation, eliminates the potential safety hazards and visual incoordination caused by the exposed bolt cap, and ensures the stability of the structure while facilitating assembly and fixed connection.

[0048] like Figure 1a-1d As shown, the L-shaped fastener 21 can be formed by pressing a steel plate, and includes a first mounting surface and a second mounting surface perpendicular to each other. The first mounting surface is provided with a plurality of tie rod holes 211, and the second mounting surface is provided with a bolt hole 212. The bolt hole 212 corresponds to the combination hole 108 and is used to install the bolt 23. The tie rod hole 211 is used to install the tie rod 24. With reference to the direction shown in the figure, the first mounting surface is a horizontal surface, and the second mounting surface is a vertical surface. The truncated cone annular fastener 22 is formed by pressing a steel plate, and it can be nested on the assembled boss 101. The tie rod 24 is a U-shaped connecting rod, and its length can be designed according to actual conditions.

[0049] In this embodiment, a cylindrical unit including four arc-shaped assembling blocks 10 is used as an example. Figure 1b As shown, a tie bar 24 is connected between each of the adjacent L-shaped fasteners 21, and a total of four tie bars 24 form a quadrilateral structure; a tie bar 24 is connected between two diagonal L-shaped fasteners 21, and the tie bar 24 and the above-mentioned quadrilateral structure are jointly supported in the columnar unit to increase the connection stability of the arc-shaped assembly block 10.

[0050] The arc-shaped assembly block 10 of this embodiment is made of high-toughness fiber-reinforced cement-based materials such as UHPC and ECC, the L-shaped fasteners 21 and the truncated cone annular fasteners 22 are made of stamped high-strength carbon steel, and the bolts 23 are made of corrosion-resistant metals such as stainless steel or aluminum.

[0051] During the installation process, the truncated cone annular fastener 22 is nested on the boss 101 composed of the two half bosses 102 or four quarter bosses 103 of the joint seam of the adjacent arc-shaped assembly blocks 10, and then the L-shaped fastener 21 is installed on the outside of the truncated cone annular fastener 22. Through the tightening and wedging of the bolts 23, the two half bosses 102 or four quarter bosses 103 of the joint seam are automatically squeezed and tightened, reducing the gap of the assembly seam and increasing the compactness of the assembly block; finally, the tie bar 24 is installed at the tie bar hole 211 on the upper part of the L-shaped fastener 21. The tie bars 24 on the same plane form two stable triangles, and after the template structures are mutually tied in opposite directions, the tie bars 24 play a key role in the concrete pouring process, which can effectively resist lateral pressure and deformation, and ensure that the template will not be displaced or deformed. At the same time, this tie method also significantly enhances the connection strength between the template and the concrete, thereby improving the stability and durability of the overall structure.

[0052] After the formwork is installed, concrete is poured and, after solidification and sufficient curing, the formwork is permanently combined with the concrete and together they become part of the structure, without the need to be removed, thus achieving permanent use of the formwork.

[0053] As described in summary, the present embodiment adopts arc-shaped assembling blocks 10, truncated cone annular fasteners 22, and L-shaped fasteners 21. During on-site installation, it is only necessary to combine the arc-shaped assembling blocks 10 into an integral template, and anchor them by passing bolts 23 through the combination holes 108 and the threaded bolt holes 212 of the L-shaped fasteners 21. During this process, the truncated cone annular fasteners 22 will automatically and tightly connect the arc-shaped assembling blocks 10, and the installation is simple and quick.

[0054] Embodiment 2:

[0055] This embodiment provides an assembled pier column non-disassembly formwork. Compared with embodiment 1, this embodiment is different in that: a mortise and tenon assembly block 11 is used, such as Figure 2a and Figure 2b As shown, trapezoidal ribs 111 or trapezoidal grooves 112 are respectively provided on the joints of the mortise and tenon assembly blocks 11, and the trapezoidal ribs 111 and trapezoidal grooves 112 of adjacent mortise and tenon assembly blocks 11 are plugged into each other for assembly, and the trapezoidal ribs 111 and the trapezoidal grooves 112 fit tightly to prevent slurry leakage during pouring.

[0056] In this embodiment, the trapezoidal ribs 111 are evenly spaced on the joint surface on one side of the mortise and tenon assembly block 11, and are in the shape of a quadrangular pyramid, and their cross-section is an isosceles trapezoid; the trapezoidal grooves 112 are evenly spaced on the joint surface on the other side of the mortise and tenon assembly block 11, and are also in the shape of a quadrangular pyramid, and their cross-section is an isosceles trapezoid, corresponding to the trapezoidal ribs 111. The upper and lower sides of the mortise and tenon assembly block 11 are provided with trapezoidal ribs 111 or trapezoidal grooves 112 in the same manner.

[0057] During splicing, the trapezoidal rib 111 and the trapezoidal groove 112 are aligned, and the trapezoidal rib 111 is directly embedded in the trapezoidal groove 112. At the same time, the respective half bosses 102 form a complete boss 101, and the semicircular grooves 104 are aligned and spliced ​​into a combination hole 108. As described in Example 1, the truncated cone annular fastener 22 is nested on the boss 101 formed by splicing and sewing, and is fixedly connected by bolts 23 passing through the combination hole 108 and the bolt hole 212 on the L-shaped fastener 21. After the truncated cone annular fastener 22 is tightened and wedged with the bolts 23, the tie rib 24 is installed at the tie rib hole 211 of the L-shaped fastener 21, thereby realizing the mutual tie between the template structures.

[0058] Embodiment 3:

[0059] This embodiment provides a prefabricated pier column non-disassembly formwork, such as Figure 3a-3c As shown, compared with Example 1, the difference of this embodiment is that: a reinforced assembly block 12 is used, and the reinforced assembly block 12 is formed by arranging a steel mesh 121 inside the arc-shaped assembly block 10; the strength of the assembly block can be improved.

[0060] Embodiment 4:

[0061] This embodiment provides a prefabricated pier column non-disassembly formwork, such as Figure 4a-4d As shown, compared with Example 1, the difference of this embodiment is that: a combined fastener 25 is used to replace the truncated cone ring fastener 22 in Example 1, and an arc-shaped assembly block 10 or a reinforcement assembly block 12 can be used.

[0062] Specifically, the combined fastener 25 is formed by pressing a steel plate, and includes a strip piece 251 and an open piece 252. The strip piece 251 has the same curvature as the assembling block and is in the shape of a long strip as a whole. Both ends of the strip piece 251 are arc-shaped to match the boss 101 and nest in the complete boss 101 near the edge; the open piece 252 is fixed to the middle position of the strip piece 251, which is similar to the truncated cone annular fastener 20, but is a non-connected closed structure, that is, it adopts an arc structure adapted to the shape of the boss 101, and the structure has an opening; the open piece 252 can be nested on the assembled boss 101.

[0063] This embodiment takes the reinforcement assembly block 12 as an example for detailed description:

[0064] During the installation process, the combined fastener 25 is nested on the boss 101 formed by the two half bosses 102 or four quarter bosses 103 of the joints of adjacent reinforcement assembly blocks 12. The combined fastener 25 can also include the bosses 101 near the joints of adjacent reinforcement assembly blocks 12, that is, one combined fastener 25 can nest three bosses 101 at the same time, forming an interlaced connection with the internal steel mesh 121, so as to enhance the strength of the joints and improve the overall strength of the formwork.

[0065] Then, the L-shaped fastener 21 is installed on the outside of the combined fastener 25. Through the tightening and wedging of the bolts 23, the two half bosses 102 or the four quarter bosses 103 of the joint seam are automatically squeezed tight, reducing the gap of the assembly seam and increasing the compactness of the assembly block. Finally, the tie bar holes 211 are opened on the upper part of the L-shaped fastener 21 to install the tie bars 24. The tie bars 24 on the same plane form two stable triangles, thereby realizing the opposite mutual tie between the template structures.

[0066] In this embodiment, the two half bosses 102 or the four quarter bosses 103 of the joint are automatically squeezed together during assembly through the design of the combination of the L-shaped fastener 21 and the combined fastener 25, thereby reducing the gap in the assembly seam and increasing the compactness of the assembly block. The tie bar hole 211 of the L-shaped fastener 21 cleverly integrates the installation function of the tie bar, thereby realizing the mutual tying between the template structures, effectively improving the template system's ability to resist lateral pressure and deformation during concrete pouring, and ensuring the stability and safety of the pouring process.

[0067] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An assembled pier column non-disassembly formwork, characterized in that: It comprises an arc-shaped assembling block, at least two arc-shaped assembling blocks are spliced ​​in the circumferential direction to form a cylindrical unit, and a plurality of cylindrical units are spliced ​​in sequence in the longitudinal direction; the inner wall of the arc-shaped assembling block is provided with evenly distributed bosses, and the bosses at the joints of adjacent arc-shaped assembling blocks are installed with truncated cone annular fasteners or combined fasteners, and the truncated cone annular fasteners or combined fasteners are connected with L-shaped fasteners, and adjacent L-shaped fasteners are connected by tie bars; the L-shaped fasteners are fixed to the arc-shaped assembling block by a connecting piece.

2. The assembled pier column non-disassembly formwork according to claim 1 is characterized in that: When the columnar unit includes more than three arc-shaped assembling blocks, tie bars are connected between one L-shaped fastener and the L-shaped fasteners opposite to it to form a plurality of triangular structures.

3. The assembled pier column non-disassembly formwork according to claim 1 or 2, characterized in that: A half boss is provided at the joint of the arc-shaped assembly block, and a quarter boss is provided at the corner of the arc-shaped assembly block; the quarter boss and its peripheral quarter boss, and the half boss and its adjacent half boss are spliced ​​into a complete boss; A truncated cone annular fastener or a combined fastener is installed at the splicing position of the quarter boss; or, a truncated cone annular fastener or a combined fastener is installed at the splicing position of the half boss at the set position at the same time.

4. The assembled pier column non-disassembly formwork according to claim 3 is characterized in that: The half boss is provided with a half countersunk hole, and the quarter boss is provided with a quarter countersunk hole; The half countersunk hole and the half countersunk hole connected with it, and the quarter countersunk hole and the quarter countersunk hole connected with its peripheral side respectively form a combination hole, and the connecting piece passes through the combination hole to be connected with the L-shaped fastener.

5. The assembled pier column non-disassembly formwork according to claim 1 is characterized in that: The combined fastener comprises a strip-shaped piece and an open piece arranged in the middle of the strip-shaped piece, the open piece is nested in the boss at the joint, and a boss is nested at each of the two ends of the strip-shaped piece.

6. The assembled pier column non-disassembly formwork according to claim 5 is characterized in that: The open piece is a non-closed structure, and its inner surface is adapted to the outer surface of the boss.

7. The assembled pier column non-disassembly formwork according to claim 1 or 2, characterized in that: The L-shaped fastener has a first mounting surface and a second mounting surface that are perpendicular to each other, wherein the first mounting surface is provided with a plurality of tie rod holes, and the second mounting surface is provided with a bolt hole.

8. The assembled pier column non-disassembly formwork according to claim 1 or 2, characterized in that: The edges of the arc-shaped assembling blocks are provided with trapezoidal grooves or trapezoidal ribs, and the trapezoidal grooves and trapezoidal ribs of adjacent arc-shaped assembling blocks are plugged.

9. The assembled pier column non-disassembly formwork according to claim 1 or 2, characterized in that: A steel mesh is arranged inside the arc-shaped assembling block.

10. The assembled pier column non-disassembly formwork according to claim 1 or 2, characterized in that: The arc-shaped assembly blocks are made of UHPC or ECC material, and the L-shaped fasteners, frustum ring fasteners, and combined fasteners are made of stamped high-strength carbon steel.

Images