Self-bearing non-dismantling formwork

Abstract

The utility model discloses a self-bearing non-dismantling formwork which is assembled and used between two beams and comprises a rigid supporting frame capable of being supported on the two beams, and end supporting devices are arranged between the rigid supporting frame and the two beams respectively. A bottom die capable of being arranged between the two beams is hung below the rigid supporting frame, a plurality of tie structures are fixedly arranged on the bottom die, and tie adjusting structures in threaded connection with the tie structures are arranged on the rigid supporting frame. According to the utility model, the on-site construction process is obviously simplified, the on-site labor amount is reduced, the on-site construction garbage and environmental pollution are reduced, the construction cost is reduced, the prefabrication is simple, the standardized production is favorably formed, and the wet operation in the manufacturing process is favorably reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of building assembly construction, in particular to a self-supporting and disassembly-free template. Background Art

[0002] The cast-in-place formwork under existing construction conditions is supported on the bottom and side of the beam. Fig.11 As shown, supports are set at the bottom of the cast-in-place floor slab, and formworks, such as steel formworks and wooden formworks, are set on the supports. Steel bars are tied to the formworks of the floor slabs, and cast-in-place concrete is poured. After the cast-in-place floor slab concrete reaches the required strength, the supports and bottom formworks are removed. This construction scheme requires a large number of temporary supports, scaffoldings, and formworks to be set up on site. The construction is cumbersome, the on-site labor demand is large, and the on-site construction waste and environmental pollution are aggravated. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a self-supporting and non-disassembly formwork which significantly simplifies the on-site construction process, reduces the on-site labor, reduces on-site construction garbage and environmental pollution, reduces construction costs, and is simple to prefabricate, is conducive to forming standardized production, and is conducive to reducing wet operations during the production process.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a self-supporting non-disassembly formwork, assembled and used between two beams, including a rigid support frame that can be supported on the two beams, and end support devices are respectively provided between the rigid support frame and the two beams; a bottom formwork that can be placed between the two beams is suspended below the rigid support frame, and a plurality of tie structures are fixed on the bottom formwork, and a tie adjustment structure is provided on the rigid support frame, which is threadedly connected to each of the tie structures.

[0005] As a preferred technical solution, the tie-tying structure includes a connecting piece that passes through the bottom mold from the upper surface of the bottom mold, the lower end of the connecting piece does not protrude from the lower surface of the bottom mold, and a tie-tying force body that can tie the bottom mold is fixedly provided on the outer peripheral surface of the connecting piece located at the bottom mold, and a tie-tying sleeve is fixedly connected to the upper end of the connecting piece, and the tie-tying adjustment structure is provided between the tie-tying sleeve and the rigid support frame.

[0006] As a preferred technical solution, the connecting piece is a countersunk bolt, the head of the countersunk bolt also serves as the tie force body, and the lower end of the tie sleeve is threadedly connected to the upper end of the countersunk bolt.

[0007] As a preferred technical solution, the connecting piece is a countersunk self-tapping screw, the head of which also serves as the tie-tie force body; a tie-tie intermediate plate located on the upper surface of the bottom mold is fixedly provided on the tie-tie sleeve, and the upper end of the countersunk self-tapping screw is fixedly connected to the tie-tie intermediate plate.

[0008] As a preferred technical solution, the lower end of the tie sleeve penetrates into the bottom mold, and the tie sleeve also serves as the connecting piece; the tie force applying body is a tie anchor plate fixedly welded to the tie sleeve.

[0009] As a preferred technical solution, a plurality of tie reinforcement members are fixedly installed on the bottom formwork, the lower ends of the tie reinforcement members do not protrude from the lower surface of the bottom formwork, and tie reinforcement force-applying bodies are fixedly provided on the outer peripheral surfaces of the tie reinforcement members located at the bottom formwork, and the upper ends of the tie reinforcement members pass through the upper surface of the bottom formwork and are used to be anchored in the later poured floor concrete.

[0010] As a preferred technical solution, the tie-down adjustment structure includes a tie-down adjustment through hole which is arranged through the upper and lower parts of the rigid support frame, a tie-down adjustment bolt is installed through the tie-down adjustment through hole, and a tie-down adjustment screw hole which is threadedly connected to the lower end of the tie-down adjustment bolt is provided on the top surface of the tie-down structure; the head of the tie-down adjustment bolt is located at the upper end of the tie-down adjustment through hole, and an adjustment fastening nut is installed on the tie-down adjustment bolt at the lower end of the tie-down adjustment through hole.

[0011] As a preferred technical solution, the end support device includes an end support column that can be supported on the corresponding beam, the top end surface of the end support column is provided with a support connection screw hole, the rigid support frame is provided with a support connection through hole that passes through the upper and lower parts, a support connection bolt is installed through the support connection through hole, and the lower end of the support connection bolt is threadedly connected to the support connection screw hole; the head of the support connection bolt is located at the upper end of the support connection through hole, and a support fastening nut is installed on the support connection bolt at the lower end of the support connection through hole.

[0012] As a preferred technical solution, the rigid support frame includes at least two supporting longitudinal beams arranged along the length direction of the bottom mold, and a plurality of connecting cross beams are fixedly provided between two adjacent supporting longitudinal beams.

[0013] Due to the adoption of the above technical scheme, the rigid support frame of the utility model is pre-assembled with the bottom formwork as one body. During on-site construction, after the rigid support frame is supported on two beams, it can form the support structure of the bottom formwork, which can avoid the erection of temporary supports, scaffolding and a large number of templates during on-site construction. By tying steel bars on the bottom formwork, the cast-in-place operation of the floor concrete can be carried out. After the casting is completed, the deflection of the bottom formwork is detected, and the deflection is adjusted by the tie adjustment structure to ensure the construction quality. When the floor concrete reaches the design strength, the threaded connection between the tie adjustment structure and the tie structure is released, and the rigid support frame and the tie adjustment structure thereon can be returned to the prefabrication site for reuse. The bottom formwork exists in the floor slab as a part, and the tie structure exists between the cast-in-place floor concrete and the bottom formwork to play a tie-reinforcement role between the two-layer structure. As a result, the on-site construction process is significantly simplified, the on-site labor force is reduced, the on-site construction garbage and environmental pollution are reduced, and the construction cost is reduced. The threaded connection between the tie adjustment structure and the tie structure not only facilitates the rapid adjustment of the downward deflection of the bottom mold after cast-in-place casting, but also facilitates the rapid disassembly of the rigid support frame and the bottom mold, so that the rigid support frame can be reused. The threaded connection between the tie adjustment structure and the tie structure during prefabrication also makes the prefabrication of the utility model simple, facilitates standardized production, and helps reduce wet operations during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0015] Figure 1 It is a structural schematic diagram of the first embodiment of the utility model;

[0016] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure at position Ⅰ;

[0017] Figure 3 yes Figure 1 Schematic diagram of the enlarged structure at Ⅱ;

[0018] Figure 4 yes Figure 1 Schematic diagram of AA enlarged structure;

[0019] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure at location III;

[0020] Figure 6 yes Figure 1 A schematic diagram of a top view structure;

[0021] Figure 7 This is a schematic diagram of the state of the first embodiment of the utility model after the steel bars are tied;

[0022] Figure 8 This is a schematic diagram of the state after the floor concrete of the first embodiment of the utility model reaches the designed strength and the rigid support frame is removed;

[0023] Fig. 9 It is a structural schematic diagram of a tie structure and a tie adjustment structure in the second embodiment of the utility model;

[0024] Fig.10 It is a structural schematic diagram of a tie structure and a tie adjustment structure in Embodiment 3 of the present utility model;

[0025] Fig.11 It is a schematic diagram of the principle of erecting supports and templates in on-site construction of the prior art.

[0026] In the figure: 1-rigid support frame; 11-support longitudinal beam; 12-connecting cross beam; 2-end support device; 21-end support column; 22-support connection screw hole; 23-support connection through hole; 24-support connection bolt; 25-support fastening nut; 3-bottom form; 4-tie structure; 41-connector; 42-tie force body; 43-tie sleeve; 44-tie middle plate; 45-tie anchor plate; 5-tie adjustment structure; 51-tie adjustment through hole; 52-tie adjustment bolt; 53-tie adjustment screw hole; 54-adjusting fastening nut; 6-tie reinforcement member; 61-tie reinforcement force body; 91-beam; 92-rebar; 93-floor concrete; 94-temporary support; 95-template. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, exemplary embodiments of the present invention are described only by way of illustration. It is undoubted that one of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0028] Embodiment 1: Figures 1 to 8 As shown together, a self-supporting, non-disassembly formwork is assembled and used between two beams 91, and the beams 91 can be steel beams or concrete beams, which are not limited here. This embodiment includes a rigid support frame 1 that can be supported on the two beams 91, and end support devices 2 are respectively provided between the rigid support frame 1 and the two beams 91. The rigid support frame 1 relies on the support of the end support devices 2 on the beams 91 and its own sufficient rigidity to form a carrier that realizes the self-supporting function above the bottom form 3.

[0029] The rigid support frame 1 described in this embodiment includes at least two support longitudinal beams 11 arranged along the length direction of the bottom mold 3, and a plurality of connecting cross beams 12 are fixedly arranged between two adjacent support longitudinal beams 11, and a frame structure with high rigidity is formed by fixing the cross beams and the longitudinal beams to each other. Among them, the fixed connection between the connecting cross beam 12 and the support longitudinal beam 11 can be bolted or directly welded, and this embodiment is illustrated by bolting. The support longitudinal beam 11 can be made of steel materials such as channel steel, I-beam, square rectangular tube or C-shaped steel. Of course, it can also be realized by self-welded steel beams with high strength, which is not limited here. This embodiment is only illustrated by channel steel.

[0030] The end support device 2 includes an end support column 21 that can be supported on the corresponding beam 91. The top end surface of the end support column 21 is provided with a support connection screw hole 22. The rigid support frame 1 is provided with a support connection through hole 23 that is arranged vertically and horizontally. For the structure of the rigid support frame 1 described in this embodiment, the support connection through hole 23 is arranged at the end of the support longitudinal beam 11, and for the support longitudinal beam 11 made of channel steel in this embodiment, the support connection through hole 23 is opened on the lower flange of the channel steel. A support connection bolt 24 is installed through the support connection through hole 23, and the lower end of the support connection bolt 24 is threadedly connected to the support connection screw hole 22; the head of the support connection bolt 24 is located at the upper end of the support connection through hole 23, and a support fastening nut 25 is installed on the support connection bolt 24 at the lower end of the support connection through hole 23.

[0031] After the support connecting bolt 24 is tightened toward the support connecting through hole 23 through the support fastening nut 25, the support connecting bolt 24 is fixed on the rigid support frame 1 by relying on the fastening force between the support fastening nut 25 and the head of the support connecting bolt 24, and the support connecting bolt 24 is threadedly connected to the end support column 21 to finally achieve rigid support of the rigid support frame 1 on the beam 91.

[0032] During on-site construction, the end support device 2 can make fine adjustments to the support height and level of the rigid support frame 1 by means of the threaded connection between the support connection bolt 24 and the end support column 21, adapting to the flatness of the top surface of the beam 91, specifically: first loosen the support fastening nut 25, then rotate the support connection bolt 24 relative to the end support column 21 to achieve fine adjustment of the position of the rigid support frame 1 to rise or fall, so that the whole reaches the specified support height and level, and re-tighten the support fastening nut 25 after adjustment to restore the rigid support function. After pouring the floor concrete 93 on site, the end support column 21 is located in the floor concrete 93. After the floor concrete 93 reaches the design strength, the rigid support frame 1 is separated from the floor concrete 93 by loosening the support fastening nut 25 and unscrewing the support connection bolt 24 out of the end support column 21.

[0033] A bottom mold 3 is suspended below the rigid support frame 1 and can be placed between the two beams 91. The bottom mold 3 can be a cement pressure plate, a calcium silicate plate, a cement mortar plate or a fine stone concrete plate, etc. The selection is made according to the specific construction design and is not limited here. A plurality of tie structures 4 are fixed on the bottom mold 3, and a tie adjustment structure 5 is provided on the rigid support frame 1 and is respectively threadedly connected to each of the tie structures 4.

[0034] The rigid support frame 1 and the bottom form 3 are preassembled as one through the threaded connection of the tie adjustment structure 5 and the tie structure 4. During on-site construction, after the rigid support frame 1 is supported on two beams 91, the rigid support frame 1 forms the support structure of the bottom form 3 to achieve the purpose of self-supporting, which can eliminate the need to set up other temporary supports 94, scaffolding and a large number of templates 95 during on-site construction, and can facilitate and quickly carry out on-site pouring of floor concrete 93. As a result, the on-site construction process is simplified, the labor demand for setting up other temporary supports 94, scaffolding and a large number of templates 95 is eliminated, the on-site labor is reduced, on-site construction garbage and environmental pollution are reduced, and construction costs are reduced.

[0035] By tying the steel bars 92 on the bottom form 3, the cast-in-place operation of the floor concrete 93 can be carried out. The tied steel bars 92 are carried out according to the construction design, which is conventional technical knowledge well known to those skilled in the art and will not be repeated here. After the cast-in-place is completed, the deflection of the bottom form 3 is detected, and the deflection is adjusted by the tie adjustment structure 5 to ensure the construction quality. At this time, the rigid support frame 1 also forms a rigid support carrier for pouring the floor concrete 93, realizing the self-load-bearing function of the entire on-site construction process.

[0036] When the floor concrete 93 reaches the designed strength, the threaded connection between the tie adjustment structure 5 and the tie structure 4 is released; for the rigid support frame 1 in this embodiment supported on the beam 91 by the end support device 2, the threaded connection between the support connection bolt 24 in the end support device 2 and the end support column 21 is released at the same time, and the rigid support frame 1 is disassembled from the bottom form 3. The rigid support frame 1 and the tie adjustment structure 5 thereon can be returned to the prefabrication site for reuse. The bottom form 3 exists in the floor slab as a part and protects the tied steel bars 92, etc., and because the bottom form 3 is prefabricated with high precision and the deflection is adjusted after pouring on site, the lower surface of the floor slab finally presents a higher flatness. The tie structure 4 exists between the cast-in-place floor concrete 93 and the bottom form 3 to play a tie-reinforcement role between the two-layer structure, ensuring the overall quality of the floor slab.

[0037] The threaded connection between the tie adjustment structure 5 and the tie structure 4 in this embodiment not only facilitates the rapid adjustment of the downward deflection of the bottom mold 3 after cast-in-place casting, but also facilitates the rapid disassembly of the rigid support frame 1 and the bottom mold 3, so that the rigid support frame 1 can be reused. The threaded connection between the tie adjustment structure 5 and the tie structure 4 during prefabrication also makes the prefabrication of this embodiment simple, facilitates standardized production, and helps reduce wet operations during the production process.

[0038] Among them, the tie-tying structure 4 includes a connecting piece 41 that penetrates into the bottom mold 3 from the upper surface of the bottom mold 3, the lower end of the connecting piece 41 does not protrude from the lower surface of the bottom mold 3, and a tie-tying force body 42 that can tie the bottom mold 3 is fixedly provided on the outer peripheral surface of the connecting piece 41 located at the bottom mold 3, and a tie-tying sleeve 43 is fixedly connected to the upper end of the connecting piece 41, and the tie-tying adjustment structure 5 is provided between the tie-tying sleeve 43 and the rigid support frame 1.

[0039] When the deflection of the bottom mold 3 is adjusted after on-site pouring, the pulling effect of the tie adjustment structure 5 on the tie structure 4 is transmitted to the bottom mold 3 at the corresponding position through the tie force body 42 to achieve the deflection adjustment. After the cast-in-place floor concrete 93 reaches the design strength, the threaded connection between the tie adjustment structure 5 and the tie structure 4 needs to be released, and the top surface of the cast-in-place floor concrete 93 should preferably be flush with the top surface of the tie sleeve 43.

[0040] The connecting piece 41 of this embodiment is a countersunk bolt, the head of the countersunk bolt also serves as the tie force body 42, and the lower end of the tie sleeve 43 is threadedly connected to the upper end of the countersunk bolt. In the case where the connecting piece 41 directly adopts a countersunk bolt, during prefabrication of this embodiment, the tie sleeve 43 is firstly threadedly connected to the tie adjustment structure 5, and then countersunk holes are drilled on the bottom mold 3 at the positions corresponding to each of the tie sleeves 43, and the countersunk bolt is passed through the countersunk hole from the bottom of the bottom mold 3 upward and then threadedly connected to the lower end of the tie sleeve 43 to achieve pre-assembly.

[0041] The tie adjustment structure 5 includes a tie adjustment through hole 51 that is set up and down on the rigid support frame 1. For the rigid support frame 1 and the supporting longitudinal beam 11 in this embodiment, which are made of channel steel, the tie adjustment through hole 51 is also set on the lower flange of the channel steel. Preferably, the hole spacing of the tie adjustment through hole 51 is not greater than 600mm. A tie adjustment bolt 52 is installed through the tie adjustment through hole 51, and a tie adjustment screw hole 53 that is threadedly connected to the lower end of the tie adjustment bolt 52 is provided on the top surface of the tie structure 4. For the tie structure 4 in this embodiment, the tie adjustment screw hole 53 is provided on the top surface of the tie sleeve 43. The head of the tie adjustment bolt 52 is located at the upper end of the tie adjustment through hole 51, and an adjustment fastening nut 54 is installed on the tie adjustment bolt 52 at the lower end of the tie adjustment through hole 51.

[0042] The adjusting fastening nut 54 is tightened in the direction of the tie adjustment screw hole 53, so that the tie adjustment bolt 52 is fixed under the tightening force of its head and the adjusting fastening nut 54. When adjusting the deflection of the bottom mold 3, the adjusting fastening nut 54 is loosened, and the tie adjustment bolt 52 is rotated relative to the tie sleeve 43, so that the threaded connection length between the tie adjustment bolt 52 and the tie sleeve 43 is increased. When the head of the tie adjustment bolt 52 is restricted, the reduction in the overall length of the tie adjustment structure 5 and the tie structure 4 forms a pulling effect on the corresponding position of the bottom mold 3, thereby adjusting the deflection. After the adjustment is completed, the adjusting fastening nut 54 is re-tightened to tighten the tie adjustment bolt 52.

[0043] In this embodiment, the bottom form 3 is also fixedly installed with a plurality of tie reinforcement members 6, the lower ends of the tie reinforcement members 6 do not protrude from the lower surface of the bottom form 3, and a tie reinforcement force-applying body 61 is fixedly provided on the outer peripheral surface of the tie reinforcement members 6 located at the bottom form 3, and the upper ends of the tie reinforcement members 6 pass through the upper surface of the bottom form 3 and are used to be anchored in the later poured floor concrete 93. In this embodiment, the tie reinforcement members 6 are added, and after the cast-in-place floor concrete 93 reaches the design strength, the bottom form 3 and the floor concrete 93 at the position without the tie structure 4 can also achieve good tie, further improving the overall tie effect of the bottom form 3 and the floor concrete 93.

[0044] The tie reinforcement member 6 of this embodiment is also realized by countersunk bolts, and the countersunk holes are processed during prefabrication, and the tie reinforcement member 6 is screwed into the countersunk holes before the on-site pouring of the floor concrete 93. After the cast-in-place floor concrete 93 reaches the design strength, the part of the countersunk bolt extending upward from the upper surface of the bottom mold 3 is well fastened in the floor concrete 93 by its own thread, ensuring that its tie function is realized.

[0045] Embodiment 2: Fig. 9 As shown, the difference between this embodiment and the first embodiment is that: the connecting piece 41 is a countersunk self-tapping screw, and the head of the countersunk self-tapping screw also serves as the tie force body 42; the tie sleeve 43 is fixedly provided with a tie intermediate plate 44 located on the upper surface of the bottom mold 3, and the upper end of the countersunk self-tapping screw is fixedly connected to the tie intermediate plate 44. In this embodiment, the tie intermediate plate 44 is used as an intermediate structure connecting the tie sleeve 43 and the connecting piece 41, which can increase the tie force at multiple points on the same tie structure 4 and improve the adjustment force of the deflection amount. Under this structure, during prefabrication, the tie sleeve 43 is also first threadedly connected to the tie adjustment structure 5, and then the self-tapping characteristics of the countersunk self-tapping screw are used to drill into the bottom mold 3 and the tie intermediate plate 44 in turn, so as to achieve a fixed connection between the tie structure 4 and the bottom mold 3.

[0046] Embodiment 3: Fig.10 As shown, the difference between this embodiment and the first embodiment is that the lower end of the tie sleeve 43 penetrates the bottom mold 3, and the tie sleeve 43 also serves as the connecting piece 41; the tie force body 42 is a tie anchor plate 45 fixedly welded on the tie sleeve 43. This structure can simplify the operations such as drilling and threaded connection in the prefabrication process of this embodiment, and is convenient for directly forming anchors when the bottom mold 3 is cast and formed, and is particularly suitable for the prefabrication of the bottom mold 3 of casting materials such as fine stone concrete or polymer mortar.

[0047] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A self-supporting, non-disassembly formwork, assembled and used between two beams, characterized by: It comprises a rigid support frame which can be supported on the two beams, and end support devices are respectively provided between the rigid support frame and the two beams; a bottom mold which can be placed between the two beams is suspended below the rigid support frame, and a plurality of tie structures are fixed on the bottom mold, and a tie adjustment structure which is threadedly connected to each of the tie structures is provided on the rigid support frame.

2. A self-supporting, non-disassembly formwork as claimed in claim 1, characterized in that: The tie-tying structure includes a connecting piece that passes through the bottom mold from the upper surface of the bottom mold, the lower end of the connecting piece does not protrude from the lower surface of the bottom mold, and a tie-tying force body that can tie the bottom mold is fixedly provided on the outer peripheral surface of the connecting piece located at the bottom mold, and a tie-tying sleeve is fixedly connected to the upper end of the connecting piece, and the tie-tying adjustment structure is provided between the tie-tying sleeve and the rigid support frame.

3. A self-supporting, non-disassembly formwork as claimed in claim 2, characterized in that: The connecting piece is a countersunk bolt, the head of the countersunk bolt also serves as the tie force applying body, and the lower end of the tie sleeve is threadedly connected to the upper end of the countersunk bolt.

4. A self-supporting, non-disassembly formwork as claimed in claim 2, characterized in that: The connecting piece is a countersunk self-tapping screw, the head of which also serves as the tie force body; a tie middle plate located on the upper surface of the bottom mold is fixedly provided on the tie sleeve, and the upper end of the countersunk self-tapping screw is fixedly connected to the tie middle plate.

5. A self-supporting, non-disassembly formwork as claimed in claim 2, characterized in that: The lower end of the tie sleeve penetrates into the bottom mold, and the tie sleeve also serves as the connecting piece; the tie force applying body is a tie anchor plate fixedly welded on the tie sleeve.

6. A self-supporting, non-disassembly formwork as claimed in claim 1, characterized in that: A plurality of tie reinforcement members are also fixedly installed on the bottom formwork, the lower ends of the tie reinforcement members do not protrude from the lower surface of the bottom formwork, and tie reinforcement force-applying bodies are fixedly provided on the outer peripheral surfaces of the tie reinforcement members located at the bottom formwork, and the upper ends of the tie reinforcement members pass through the upper surface of the bottom formwork and are used to be anchored in the later poured floor concrete.

7. A self-supporting, non-disassembly formwork as claimed in claim 1, characterized in that: The tie-adjustment structure includes a tie-adjustment through hole which is arranged to pass through the rigid support frame from top to bottom, a tie-adjustment bolt is installed through the tie-adjustment through hole, and a tie-adjustment screw hole which is threadedly connected to the lower end of the tie-adjustment bolt is provided on the top surface of the tie-adjustment structure; the head of the tie-adjustment bolt is located at the upper end of the tie-adjustment through hole, and an adjustment fastening nut is installed on the tie-adjustment bolt at the lower end of the tie-adjustment through hole.

8. The self-supporting, non-disassembly formwork according to claim 1, characterized in that: The end support device includes an end support column that can be supported on the corresponding beam, and a support connection screw hole is provided on the top end surface of the end support column, and a support connection through hole is provided on the rigid support frame, and a support connection through hole is installed through the support connection through hole, and the lower end of the support connection bolt is threadedly connected to the support connection screw hole; the head of the support connection bolt is located at the upper end of the support connection through hole, and a support fastening nut is installed on the support connection bolt at the lower end of the support connection through hole.

9. The self-supporting non-disassembly formwork according to claim 1, characterized in that: The rigid support frame comprises at least two supporting longitudinal beams arranged along the length direction of the bottom mold, and a plurality of connecting cross beams are fixedly arranged between two adjacent supporting longitudinal beams.

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