Supporting-free bolt bar suspended formwork structure at abutted seam of PC (Polycarbonate) laminated slabs

Abstract

The utility model provides a support-free bolt bar suspended formwork structure at a joint of PC laminated slabs, which comprises two corresponding prefabricated bottom plates, a joint is arranged between the two prefabricated bottom plates, a first connecting piece is pre-buried at one end of each prefabricated bottom plate close to the joint, a formwork is arranged below the joint, two sides of the top of the formwork abut against the bottoms of the two prefabricated bottom plates, and the two sides of the top of the formwork abut against the bottoms of the two prefabricated bottom plates. A rigid supporting piece is arranged at the bottom of the formwork, and the two ends of the rigid supporting piece are detachably and fixedly connected with the first connecting pieces through second connecting pieces. In the utility model, after the prefabricated slab is hoisted in place, the position of the template is adjusted firstly, then the second connecting piece penetrates through the rigid supporting piece, and the rigid supporting piece presses the template at the bottom of the prefabricated bottom plate at the abutted seam from the bottom of the template, so that a supporting structure does not need to be independently arranged, and the bottom of the abutted seam is supported by a flat template; the flatness of the upper and lower surfaces of the abutted seam pouring layer is not influenced; the rigid supporting piece, the formwork, the second connecting piece and other components can be repeatedly used, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of joint construction of composite plates, and in particular relates to a supporting bolt rod hanging formwork structure free of the joints of PC composite plates. Background Art

[0002] The post-pouring of concrete at the joints of prefabricated PC composite panels requires a separate formwork, which causes a great waste of the formwork. At the same time, there is constant leakage at the post-pouring strips, and the flatness caused by the irregular formwork often exceeds the acceptance specifications. A lot of manpower is required to clean and polish the leaking parts, especially the plate strip position due to insufficient support, which leads to the frequent phenomenon of formwork expansion.

[0003] In the prior art, a Chinese utility model patent document with authorization announcement number CN211572573U discloses a bottom formwork suspension structure for an integral joint of a bidirectional prefabricated composite slab, in which transverse steel bars are set above the joint, a first section of a hanger is hung on the transverse steel bars, a transverse steel pipe is installed at the lower end of the first section of the hanger, and a joint formwork is set on the top of the transverse steel pipe. This formwork suspension structure does not require a separate supporting structure, but after the joint is cast and solidified, the first section of the hanger is fixed inside the joint casting layer, which is not easy to disassemble and cannot be reused, and affects the flatness of the upper and lower surfaces of the joint casting layer.

[0004] Therefore, it is necessary to design a PC composite plate joints without supporting bolt rod hanging formwork structure which does not affect the flatness of the upper and lower surfaces of the joint casting layer and can be repeatedly used to solve the current technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a supporting bolt rod hanging formwork structure at the joint of PC composite plates which does not affect the flatness of the upper and lower surfaces of the joint casting layer and can be repeatedly used.

[0006] The technical solution of the utility model is: a supporting bolt rod hanging formwork structure without support at the joint of PC composite plate, comprising two corresponding prefabricated bottom plates, a joint between the two prefabricated bottom plates, a first connecting member embedded in one end of the prefabricated bottom plate close to the joint, a template is arranged below the joint, the top two sides of the template are abutted against the bottoms of the two prefabricated bottom plates, a rigid support member is arranged at the bottom of the template, and both ends of the rigid support member are detachably fixedly connected to the first connecting member through a second connecting member.

[0007] The first connecting member is a pre-buried spiral tube arranged inside the prefabricated base plate, and the second connecting member is a bolt arranged at the end of the rigid support member, and the bolt is threadedly connected to the prefabricated spiral tube.

[0008] A gasket is arranged between the lower end of the bolt and the rigid support member.

[0009] The first connecting member is a pre-buried spiral tube arranged inside the prefabricated base plate, the second connecting member is a screw rod arranged inside the pre-buried spiral tube, and the end of the rigid support member is assembled on the outside of the screw rod through a nut.

[0010] A gasket is arranged between the nut and the rigid support member.

[0011] A cover plate is arranged at the upper end of the embedded spiral pipe, and the cover plate and the embedded spiral pipe are connected to form an integrated structure.

[0012] The rigid support member has a central support plate, and both ends of the central support plate are provided with mounting holes matching the second connecting member.

[0013] The mounting hole is a circular hole or a waist-shaped hole.

[0014] External brackets are fixedly arranged on both sides of the central support plate, and an inner support plate is arranged between the external brackets and the central support plate.

[0015] The template is an aluminum template or a wooden template.

[0016] Beneficial effects of the utility model:

[0017] (1) In the present invention, after the prefabricated panels on both sides of the site are hoisted in place, the position of the template is adjusted first, and then the second connecting member passes through the rigid support member, and the rigid support member presses the template from the bottom to the bottom of the prefabricated bottom plate at the joint. There is no need to set up a separate support structure. The bottom of the joint is supported by a flat template, which does not affect the flatness of the upper and lower surfaces of the joint casting layer;

[0018] (2) Rigid support parts, formwork, second connecting parts and other components can be reused to reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an implementation method of a supporting bolt rod hanging formwork structure at the joint of PC composite panels in the utility model.

[0020] Figure 2 It is a structural schematic diagram of another implementation method of the supporting bolt rod hanging formwork structure at the joint of the PC composite plate in the utility model.

[0021] Figure 3 It is a structural schematic diagram of an implementation mode of the rigid support member in the utility model.

[0022] Figure 4 It is a structural schematic diagram of another implementation mode of the rigid support member in the utility model. DETAILED DESCRIPTION

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0024] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] like Figure 1 and 2 As shown, the supporting bolt rod hanging formwork structure at the joint of the PC composite plate comprises two corresponding prefabricated bottom plates 1, a joint 9 is provided between the two prefabricated bottom plates 1, a first connecting member is pre-buried at one end of the prefabricated bottom plate 1 close to the joint 9, a template 3 is arranged below the joint 9, the top two sides of the template 3 are in contact with the bottoms of the two prefabricated bottom plates 1, a rigid support member 4 is arranged at the bottom of the template 3, and both ends of the rigid support member 4 are detachably fixedly connected to the first connecting member through the second connecting member; in this embodiment, after the prefabricated plates 1 on both sides of the site are hoisted in place, the position of the template 3 is adjusted first, and then the second connecting member passes through the rigid support member 4, and the rigid support member 4 presses the template 3 from the bottom to the bottom of the prefabricated bottom plate 1 at the joint, and there is no need to set up a supporting structure separately, and the bottom of the joint is supported by the flat template 3, which does not affect the flatness of the upper and lower surfaces of the joint casting layer; the rigid support member 4, the template 3, the second connecting member and other components can be repeatedly used to reduce the construction cost.

[0026] In some embodiments, Figure 1As shown, the first connecting member is a pre-buried screw tube 2 arranged inside the prefabricated base plate 1, and the second connecting member is a bolt 5 arranged at the end of the rigid support member 4. The bolt 5 is inserted into the end hole of the rigid support member 4, and the bolt 5 is threadedly connected with the prefabricated screw tube 2. After the prefabricated panels 1 on both sides of the site are hoisted in place, the position of the template 3 is adjusted first, and then the bolt 5 passes through the rigid support member 4, the rigid support member 4 squeezes the template 3, and finally the bolt 5 is tightened, and the template 3 is fixed.

[0027] In some embodiments, a gasket 6 is provided between the lower end of the bolt 5 and the rigid support member 4 , and the contact area between the bolt 5 and the rigid support member 4 can be increased by the gasket 6 .

[0028] In some embodiments, Figure 2 As shown, the first connecting member is a pre-buried spiral tube 2 arranged inside the prefabricated base plate 1, and the second connecting member is a screw rod 7 arranged inside the pre-buried spiral tube 2. The end of the rigid support member 4 is assembled on the outside of the screw rod 7 through a nut 8. The screw rod 7 passes through the hole cavity at the end of the rigid support member 4. The nut 8 is assembled on the outside of the screw rod 7 below the rigid support member 4 to fix it. After the prefabricated panels 1 on both sides of the site are hoisted in place, the position of the template 3 is adjusted first, and then the screw rod 7 is installed in the pre-buried spiral tube 2, the screw rod 7 is inserted into the hole cavity at the end of the rigid support member 4, and the rigid support member 4 squeezes the template 3. Finally, the nut 8 is tightened on the screw rod 7 below the rigid support member 4 to fix the template 3.

[0029] In some embodiments, a gasket 6 is provided between the nut 8 and the rigid support member 4 , and the contact area between the nut 8 and the rigid support member 4 can be increased by the gasket 6 .

[0030] In some embodiments, a cover plate 21 is provided at the upper end of the embedded spiral tube 2, and the cover plate 21 is connected to the embedded spiral tube 2 to form an integrated structure. The cover plate 21 can seal the upper end of the embedded spiral tube 2 to prevent concrete from entering the interior of the embedded spiral tube 2 during the pouring process.

[0031] In some embodiments, Figure 3 As shown, the rigid support member 4 has a central support plate 41 , and both ends of the central support plate 41 are provided with mounting holes 44 matching the second connecting member. The second connecting member is connected to the first connecting member after passing through the mounting holes 44 .

[0032] In some embodiments, the mounting hole 44 is a circular hole or a waist-shaped hole; preferably, it is a waist-shaped hole, which can adapt to the spacing between different first connecting members on both sides of the seam and has a wide range of applications.

[0033] In some embodiments, Figure 4As shown, outer brackets 42 are fixedly provided on both sides of the central support plate 41, and inner support plates 43 are provided between the outer brackets 42 and the central support plate 41. The outer brackets 42 can increase the support area of ​​the template 3 and improve the stability of the template 3 support.

[0034] In some embodiments, the formwork 3 is an aluminum formwork or a wooden formwork.

[0035] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0036] The above-mentioned embodiments only express some implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A PC laminated plate joint without supporting bolt rod hanging formwork structure, characterized by: It comprises two corresponding prefabricated bottom plates, wherein a joint is formed between the two prefabricated bottom plates, a first connecting member is embedded in one end of the prefabricated bottom plate close to the joint, a template is arranged below the joint, both sides of the top of the template are in contact with the bottoms of the two prefabricated bottom plates, a rigid supporting member is arranged at the bottom of the template, and both ends of the rigid supporting member are detachably fixedly connected to the first connecting member through a second connecting member.

2. The PC laminated board joint free support bolt rod hanging formwork structure according to claim 1, characterized in that: The first connecting member is a pre-buried spiral tube arranged inside the prefabricated base plate, and the second connecting member is a bolt arranged at the end of the rigid support member, and the bolt is threadedly connected to the prefabricated spiral tube.

3. The PC laminated board joints free-support bolt rod hanging formwork structure according to claim 2, characterized in that: A gasket is arranged between the lower end of the bolt and the rigid support member.

4. The PC laminated board joint free support bolt rod hanging formwork structure according to claim 1, characterized in that: The first connecting member is a pre-buried spiral tube arranged inside the prefabricated base plate, the second connecting member is a screw rod arranged inside the pre-buried spiral tube, and the end of the rigid support member is assembled on the outside of the screw rod through a nut.

5. The PC laminated board joints free-support bolt rod hanging formwork structure according to claim 4, characterized in that: A gasket is arranged between the nut and the rigid support member.

6. The PC laminated board joint free support bolt rod hanging formwork structure according to claim 2, characterized in that: A cover plate is arranged at the upper end of the embedded spiral pipe, and the cover plate and the embedded spiral pipe are connected to form an integrated structure.

7. The PC laminated board joint free-support bolt rod hanging formwork structure according to claim 1, characterized in that: The rigid support member has a central support plate, and both ends of the central support plate are provided with mounting holes matching the second connecting member.

8. The PC laminated board joint free-support bolt rod hanging formwork structure according to claim 7, characterized in that: The mounting hole is a circular hole or a waist-shaped hole.

9. The PC laminated board joints free-support bolt rod hanging formwork structure according to claim 7, characterized in that: External brackets are fixedly arranged on both sides of the central support plate, and an inner support plate is arranged between the external brackets and the central support plate.

10. The PC laminated board joints free-support bolt rod hanging formwork structure according to claim 1, characterized in that: The template is an aluminum template or a wooden template.

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