Formwork erecting method and construction method for ultrahigh parapet wall with inner wall face model

Abstract

The invention discloses a formwork erecting method and a construction method for an ultrahigh parapet wall with an inner wall surface modeling, and the formwork erecting method comprises the following steps: pre-burying and placing clamping pieces in a roof floor slab, erecting a formwork erecting platform, binding wall body reinforcing steel bars, splicing wood formworks to form an inner formwork matched with the inner wall surface modeling of the ultrahigh parapet wall, and mounting batten secondary beams. An outer formwork on the outer side of the opposite-pulling formwork system, a square steel pipe secondary beam, a double-spliced steel pipe main beam, an E-shaped clamp and a nut on the E-shaped clamp are welded and integrated into a whole one by one to form an outer formwork assembly, and the outer formwork assembly is hoisted on a shelving clamp piece; the opposite-pull screws penetrate through the inner formwork, the wall steel bars and the outer formwork assembly and are connected to the nuts in a threaded mode; and the opposite-pull screw rods penetrate through the outsides of the batten secondary beams to mount the double-spliced steel pipe main beams and the E-shaped clamps on the inner sides, and the opposite-pull screw rods are fastened and connected through nuts, so that the ultrahigh parapet wall formwork structure with an inner wall surface model is formed. The high-altitude operation risk is reduced, and the method has the advantages of being high in formwork erecting efficiency and low in formwork erecting cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to a formwork supporting method and construction method of an inner wall surface shaped super-high parapet. BACKGROUND

[0002] In steel structure buildings, with the design of building shapes becoming more colorful, many building roofs have the function of personable landscape roofs, the height of parapets is increased to form super-high parapets, and the inner wall surface shapes of parapets are also more and more complex. The height of a conventional parapet is 0.6-1m, and a parapet with a height of more than 1m is called a super-high parapet. For a parapet with an irregular inner wall surface shape, if all steel formworks are used, the turnover rate of the steel formworks is reduced, material waste is caused, and the cost of the formworks is increased. In steel structure buildings, no external scaffolding is needed for construction, so when the parapet is constructed, a cantilevered scaffold is constructed on the lower floor slab to the roof, and then a formwork supporting frame of the parapet is erected on the cantilevered scaffold and a counter-pulling formwork system is installed. The disadvantage is that the disassembly of the cantilevered scaffold and the formwork supporting frame will increase the material cost, labor cost and construction process steps, greatly reducing the construction efficiency and progress of the parapet and prolonging the construction period. Moreover, the process of disassembling the cantilevered scaffold and the formwork supporting frame on the lower floor slab obviously increases the high-altitude construction, thereby increasing the safety risk of high-altitude falling. SUMMARY

[0003] The purpose of the present application is to provide a formwork supporting method and construction method of an inner wall surface shaped super-high parapet, so as to solve the problem of how to avoid the erection of a cantilevered scaffold to reduce the construction cost of the formwork supporting system of the parapet, improve the construction efficiency of the parapet and reduce the risk of high-altitude operation in the case that the parapet of the landscape roof in the steel structure building is relatively high, the inner wall surface shape of the parapet is irregular and the formwork supporting cannot be completed on the inner side of the parapet.

[0004] In order to solve the above technical problems, the present application provides a formwork supporting method of an inner wall surface shaped super-high parapet, which is used for the formwork supporting of a super-high parapet with an inner wall surface shape in a steel structure building, adopts a counter-pulling formwork system as a formwork supporting structure of the super-high parapet with an inner wall surface shape, the inner formwork adopts a wooden formwork, the outer formwork adopts a steel formwork, and the method comprises the following steps:

[0005] Embedding a resting clamping piece in the roof slab constructed on the steel beam of the steel structure building, so that the resting clamping piece is horizontally or upwardly inclined to extend beyond the end of the roof slab, and the end of the resting clamping piece has an upwardly bent limiting edge;

[0006] Erecting a formwork supporting platform on the roof slab;

[0007] Binding the wall steel bars of the super-high parapet on the roof slab through the formwork supporting platform;

[0008] Wooden formwork is spliced ​​on the inside of the wall reinforcement to form an inner formwork that matches the inner wall shape of the ultra-high parapet wall. When the inner wall shape of the ultra-high parapet wall is a plane at the bottom and a concave surface at the top relative to the plane, the inner formwork at the concave surface is leveled and aligned with the wooden formwork at the plane by wooden back ribs, and wooden secondary beams are installed, thereby completing the scattered assembly of the inner formwork and wooden secondary beams on the inside of the tie formwork system.

[0009] The outer formwork, square steel pipe secondary beam, double steel pipe main beam, mountain-shaped clamp and nuts on the outside of the tie formwork system are welded together to form an outer formwork assembly. The outer formwork assembly is then hoisted onto the support clamps on the outside of the wall reinforcement and is located within its limiting edge using hoisting equipment.

[0010] Each tie rod of the tie formwork system passes through the inner formwork, wall reinforcement and outer formwork assembly and is threaded onto the corresponding nut on the outer formwork assembly;

[0011] The inner double-section steel pipe main beam and the mountain-shaped clamp are installed by passing tie rods through the outer side of the timber secondary beam and fastening the tie rods with nuts. This completes the scattered assembly of the double-section steel pipe main beam, mountain-shaped clamp and nuts on the inner side of the tie formwork system. The inner formwork and outer formwork are then tightened by the fastened tie rods to form an ultra-high parapet wall support structure with an inner wall surface shape.

[0012] Furthermore, the formwork support method for an extra-high parapet wall with an inner wall surface provided by the present invention includes a convex surface arranged at the top along the concave surface and not on the same vertical plane when the inner side of the upper part of the extra-high parapet wall also includes a convex surface arranged at the top along the concave surface. A U-shaped clamping mold with an integral structure is used to clamp between the inner and outer templates of the corresponding area of ​​the convex surface. Tie rods are used to pass through the U-shaped clamping mold and double-connected steel pipe main beams and their mountain-shaped clips are installed at the tie rods. The two ends of the tie rods passing through the U-shaped clamping mold are fastened to the mountain-shaped clips at the corresponding positions with nuts to form a top convex surface clamping mold structure.

[0013] Furthermore, in the formwork support method for an extra-high parapet wall with an inner wall surface provided by the present invention, the upper end of the wooden secondary beam is pressed against the inner template at the junction of the concave and convex surfaces, and the inner template at the corresponding junction extends outward to provide a pressing position for the wooden secondary beam.

[0014] Furthermore, the formwork method for an extra-high parapet wall with an inner wall surface provided by the present invention, when the width between the U-shaped clamping molds is greater than the thickness of the top wall at the convex surface, fills the gap between the U-shaped clamping molds and the inner template and / or the outer template with wooden backings to seal it.

[0015] Furthermore, the formwork method for an extra-high parapet wall with an interior wall design provided by the present invention also includes:

[0016] The inclined connecting steel pipe throw support is connected between the roof floor inside the super-high female wall formwork structure and the double-spliced steel pipe main beam inside, and the super-high female wall formwork structure with the inner wall surface modeling is supported through the steel pipe throw support.

[0017] Further, the formwork method of the super-high female wall with the inner wall surface modeling further comprises:

[0018] The inclined connecting steel wire rope is connected between the roof floor inside the super-high female wall formwork structure and the double-spliced steel pipe main beam inside, and the vertical distribution of the super-high female wall formwork structure with the inner wall surface modeling is fine-tuned and corrected through the steel wire rope.

[0019] Further, the formwork method of the super-high female wall with the inner wall surface modeling, the formwork platform is a scaffold.

[0020] Further, the formwork method of the super-high female wall with the inner wall surface modeling, the upper end of the steel formwork of the outer formwork assembly is welded with a plurality of steel bar lifting rings.

[0021] In order to solve the above technical problems, the application further provides a construction method of the super-high female wall with the inner wall surface modeling.

[0022] Further, the construction method of the super-high female wall with the inner wall surface modeling, the inner wall modeling of the super-high female wall is a wall surface modeling structure of a bottom plane, an upper concave surface or a wall surface modeling structure of a bottom plane, a middle concave surface and a top convex surface.

[0023] Compared with the prior art, the application has the following beneficial effects:

[0024] This invention provides a formwork support method and construction method for an ultra-high parapet wall with an interior wall design. The method utilizes a formwork support platform on the roof slab to install the inner formwork of the tie-beam system to match the interior wall design of the ultra-high parapet wall. After leveling with timber backing, the secondary timber beams are assembled piecemeal. The outer formwork, square steel pipe secondary beams, double-jointed steel pipe main beams, U-shaped clamps, and nuts on the outer side of the tie-beam system are welded together to form an outer formwork assembly. This assembly is then hoisted onto pre-embedded support brackets extending from the roof slab using hoisting equipment. Finally, the tie rods of the tie-beam system are threaded through… The inner template is threaded onto the nut at the U-shaped clamp of the outer template assembly. Then, the inner template, timber secondary beams, tie rods, double-jointed steel pipe main beams, U-shaped clamps, and nuts on the inner side of the tie-panel template system are assembled piecemeal to form an ultra-high parapet wall formwork structure with an irregular inner wall shape. This enables the formwork construction of ultra-high parapet walls with irregular inner wall shapes, avoids the installation of cantilevered scaffolding between the roof slab and the floor slab below, reduces the risk of high-altitude operations, and has the advantages of high formwork efficiency and low formwork cost. This improves the construction efficiency of ultra-high parapet walls with an irregular inner wall shape and has the advantage of a short construction period.

[0025] The present invention provides a formwork support method and construction method for an extra-high parapet wall with an inner wall surface design. The inner formwork uses wooden formwork to match and splice the inner wall surface design of the extra-high parapet wall. It has the advantages of low cost and convenient splicing. It avoids the problem of high material cost caused by using steel formwork to press out the cavity formwork to match the inner wall surface design. It also avoids the problem of steel formwork with fixed cavity being unable to be universal after removal due to changes in the height, plane, concave and convex dimensions of the extra-high parapet wall, resulting in waste of steel formwork and reducing the material cost of the inner formwork.

[0026] The present invention provides a formwork support method and construction method for an extra-high parapet wall with an interior wall surface design. By limiting the outer formwork component hoisted on the support bracket by the limiting edge of the support bracket, the safety risk of falling from a height during the hoisting and placement process is avoided.

[0027] The present invention provides a formwork support method and construction method for an extra-high parapet wall with an inner wall surface design. By setting up a formwork support platform on the roof floor slab inside the extra-high parapet wall to be constructed, the formwork support of the extra-high parapet wall is realized through the inner formwork support platform, which ensures the safety of the formwork support and avoids the problem of increased formwork support risks when construction workers support the formwork through cantilevered scaffolding outside the roof floor slab.

[0028] The present invention provides a formwork support method and construction method for an extra-high parapet wall with an inner wall surface design. By using wooden back beams to level and align the inner formwork at the concave surface of the inner wall surface design of the extra-high parapet wall with the wooden formwork at the flat surface, a whole wooden secondary beam is used to support the inner formwork over a large area, thereby improving the support accuracy of the inner formwork. Attached Figure Description

[0029] Figure 1 This is a facade structural diagram of a formwork method for an extra-high parapet wall with an interior wall design;

[0030] Figure 2 This is a schematic diagram of the elevation structure of the outer mold component;

[0031] Figure 3 This is a schematic diagram of the planar structure of the outer mold assembly;

[0032] As shown in the figure:

[0033] 1. Steel beams, 2. Roof slabs, 3. Supporting brackets, 4. Formwork platform, 5. Inner formwork, 6. Timber back bracing, 7. Timber secondary beams, 8. Outer formwork, 9. Square steel pipe secondary beams, 10. Double-jointed steel pipe main beams, 11. U-shaped brackets, 12. Nuts, 13. Outer formwork components, 14. Tie rods, 15. U-shaped clamps, 16. Steel pipe supports, 17. Steel wire ropes, 18. Rebar lifting rings, 19. Slab holes, 20. Vertical components, 21. Extra-high parapet walls. Detailed Implementation

[0034] The present invention will now be described in detail with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0035] Please refer to Figures 1 to 3 This invention provides a formwork support method for an extra-high parapet wall 21 with an interior wall design, used for formwork support of an extra-high parapet wall 21 with an interior wall design in steel structure buildings. A tie-panel formwork system is used as the formwork support structure for the extra-high parapet wall 21 with an interior wall design, wherein the inner formwork is made of wood and the outer formwork is made of steel, including:

[0036] Step S1: Embed a mounting bracket 3 within the roof slab 2 constructed on the steel beam 1 of the steel structure building. The mounting bracket 3 extends horizontally or upwardly beyond the end of the roof slab 2, and its end has an upwardly bent limiting edge. Preferably, the mounting bracket 3 is a plate, which avoids the problem of misalignment between reinforcing bars when using dispersed pre-embedded reinforcement.

[0037] Step S2: Erect a formwork support platform 4 on the roof slab 2. The formwork support platform 4 can be a disc-lock scaffold.

[0038] Step S3: Tie the wall reinforcement of the extra-high parapet wall 21 onto the roof slab 2 using the formwork platform 4.

[0039] Step S4: Wooden formwork is used to assemble an inner formwork 5 on the inside of the wall reinforcement to match the inner wall shape of the extra-high parapet wall 21. When the inner wall shape of the extra-high parapet wall 21 is a flat surface at the bottom and a concave surface at the top relative to the flat surface, the inner formwork 5 at the concave surface is leveled and aligned with the wooden back brace 6 and then a wooden secondary beam 7 is installed on the wooden formwork at the flat surface. This completes the piecemeal assembly of the inner formwork 5 and the wooden secondary beam 7 on the inside of the tie-beam system. This method is suitable for inner wall shapes of the extra-high parapet wall 21 with a flat bottom and a concave top. When the inner side of the upper part of the extra-high parapet wall 21 also includes a convex surface arranged upwards along the concave surface, and this convex surface is not on the same vertical plane as the plane, a U-shaped clamping mold 15 with an integrated structure is used to clamp between the inner template 5 and the outer template 8 in the corresponding area of ​​the convex surface. Tie rods 14 are used to pass through the U-shaped clamping mold 15, and double-layered steel pipe main beams 10 and their mountain-shaped clips 11 are installed at the tie rods 14. The two ends of the tie rods 14 passing through the U-shaped clamping mold 15 are fastened to the mountain-shaped clips 11 at the corresponding positions by nuts 12 to form a top convex surface clamping mold structure. At this time, the inner wall shape suitable for the extra-high parapet wall 21 is a wall shape structure with a bottom plane, a middle concave surface, and a top convex surface.

[0040] Step S5 involves welding the outer formwork 8, square steel pipe secondary beam 9, double-jointed steel pipe main beam 10, and mountain-shaped clamp 11, along with their nuts 12, together to form the outer formwork assembly 13. Using cranes such as truck cranes or tower cranes, the outer formwork assembly 13 is then hoisted onto the support clamp 3 on the outside of the wall reinforcement, positioned within its limiting edge. The support clamp 3 is tilted upwards to provide sufficient allowance for downward deformation under load, ensuring the outer formwork assembly 13 is installed correctly and preventing it from falling off. To facilitate the overall hoisting of the outer formwork assembly 13, multiple steel lifting rings 18 can be welded to the upper end of the steel formwork of the outer formwork assembly 13. The hoisting equipment can then be connected to the steel lifting rings 18 via lifting ropes to hoist the outer formwork assembly 13 as a whole.

[0041] Step S6: Pass each tie rod 14 of the tie formwork system through the inner formwork 5, the wall reinforcement and the outer formwork assembly 13 and thread it onto the nut 12 at the corresponding position on the outer formwork assembly 13.

[0042] Step S7: The inner double-section steel pipe main beam 10 and the U-shaped clamp 11 are installed through the tie rod 14 on the outside of the timber secondary beam 7. The tie rod 14 is then tightened with nuts 12, completing the piecemeal assembly of the double-section steel pipe main beam 10, U-shaped clamp 11, and nuts 12 within the tie-rod formwork system. The tightened tie rod 14 then pulls the inner formwork 5 and outer formwork 8 together to form an ultra-high parapet wall support structure with an inner wall surface shape. The inner nut 12 can be a double nut structure to improve its tightening effect and prevent loosening.

[0043] Please refer toFigure 1 To improve the stability of the above-mentioned formwork structure for ultra-high parapet walls with interior wall designs, the formwork method for ultra-high parapet walls with interior wall designs provided in this embodiment of the invention may further include:

[0044] In step S8, a steel pipe brace 16 is inclinedly connected between the roof slab 2 on the inner side of the ultra-high parapet wall formwork structure and the double-layered steel pipe main beam 10 on the inner side. The steel pipe brace 16 supports the ultra-high parapet wall formwork structure with an inner wall surface, thereby preventing displacement or tilting of the ultra-high parapet wall formwork structure with an inner wall surface after erection, ensuring the stability and reliability of the formwork. The lower end of the steel pipe brace 16 is connected to the vertical member 20 set on the roof slab 2 through a pipe fastener, and the upper end of the steel pipe brace 16 is an adjustable rod, which can adjust the total length of the steel pipe brace 16 according to the support angle requirements, so as to achieve reliable support for the ultra-high parapet wall formwork structure with an inner wall surface.

[0045] Please refer to Figure 1 In order to make micro-adjustments to the formwork structure of the ultra-high parapet wall with an inner wall surface after displacement or tilting, the formwork method for the ultra-high parapet wall with an inner wall surface provided in this embodiment of the invention may further include:

[0046] Step S9 involves connecting a steel wire rope 17 at an incline between the roof slab 2 on the inner side of the ultra-high parapet wall formwork structure and the inner double-walled steel pipe main beam 10. The steel wire rope 17 is used to fine-tune and correct the vertical distribution of the ultra-high parapet wall formwork structure with its inner wall design. The lower end of the steel wire rope 17 can be connected to the vertical member 20, and the upper end can be connected to at least one steel pipe of the double-walled steel pipe main beam 10 via a loop or a rope buckle. The traction force of the steel wire rope 17, combined with the adjustment of the total length of the steel pipe bracing 16, allows for fine-tuning of the ultra-high parapet wall formwork structure with its inner wall design when it tilts inward or shifts. Steps S1-S9 can be adjusted according to construction needs.

[0047] Please refer to Figure 1 To improve the reliability of the inner formwork 5, the formwork method for the extra-high parapet wall with inner wall surface design provided in this embodiment of the invention involves the upper end of the wooden secondary beam 7 being pressed against the inner formwork 5 at the junction of the concave and convex surfaces. The inner formwork 5 at the corresponding junction extends outward to provide a pressing position for the wooden secondary beam 7. Thus, the inner formwork 5 is supported by a whole, non-disconnected wooden secondary beam 7, which ensures the formwork effect of the concave surface and the junction of the concave and convex surfaces, and improves the construction quality of the extra-high parapet wall 21 with inner wall surface design.

[0048] Please refer to Figure 1To improve the formwork quality of the top convex surface, the formwork method for an extra-high parapet wall with an inner wall shape provided in this embodiment of the invention involves filling the gap between the U-shaped clamping molds 15 and the inner template 5 and / or outer template 8 with wooden backing ribs 6 to tighten them when the width between the U-shaped clamping molds 15 is greater than the thickness of the top wall at the convex surface. The tie rods 14 at the U-shaped clamping molds 15 can also penetrate through the inner and outer templates of the corresponding area of ​​the top wall.

[0049] Please refer to Figure 1 This invention also provides a construction method for an extra-high parapet wall with an interior wall design, used for the construction of an extra-high parapet wall 21 with an interior wall design in a steel structure building. The above-mentioned formwork method for an extra-high parapet wall with an interior wall design is used to construct a formwork structure for the extra-high parapet wall with an interior wall design. Concrete is poured inside the formwork structure to form the extra-high parapet wall 21 with an interior wall design.

[0050] The formwork support method and construction method for an ultra-high parapet wall with an interior wall design provided in this embodiment of the invention utilizes the formwork support platform 4 on the roof floor slab 2 to install the inner formwork 5 on the inner side of the tie rod formwork system to match the interior wall design of the ultra-high parapet wall 21. After leveling with the timber back ribs 6, the timber secondary beams 7 are assembled piecemeal. The outer formwork 8, square steel pipe secondary beams 9, double-jointed steel pipe main beams 10, U-shaped clamps 11 and their nuts 12 on the outer side of the tie rod formwork system are welded together to form an outer formwork assembly 13. The assembly is then hoisted onto the pre-embedded and extended support clamps 3 in the roof floor slab 2 using hoisting equipment. Finally, the tie rods 14 of the tie rod formwork system are used to... The inner template 5 is threaded through and connected to the nut 12 at the mountain-shaped clip 11 of the outer template assembly 13. Then, the inner template 5, the timber secondary beam 7, the tie rod 14, the double-jointed steel pipe main beam 10, the mountain-shaped clip 11 and the nut 12 on the inner side of the tie template system are assembled piece by piece to form an ultra-high parapet wall formwork structure with an inner wall surface shape. This realizes the formwork construction of the ultra-high parapet wall 21 with an irregular inner wall surface shape, avoids the installation of cantilever scaffolding between the roof floor slab 2 and the floor slab below it, reduces the risk of high-altitude operation, and has the advantages of high formwork efficiency and low formwork cost. This improves the construction efficiency of the ultra-high parapet wall 21 with an inner wall surface shape and has the advantage of a short construction cycle.

[0051] The formwork and construction method for an extra-high parapet wall with an inner wall surface design provided in this embodiment of the invention uses wooden formwork 5 to match and splice the inner wall surface design of the extra-high parapet wall 21. This method has the advantages of low cost and convenient splicing. It avoids the problem of high material cost caused by using steel formwork to press out a cavity formwork that matches the inner wall surface design. It also avoids the problem of steel formwork with fixed cavity being affected by changes in the height, plane, concave surface, convex surface and other dimensions of the extra-high parapet wall 21 after removal, which would lead to waste of steel formwork and reduce the material cost of the inner formwork 5.

[0052] The formwork support method and construction method for an extra-high parapet wall with an interior wall surface provided by the present invention limit the outer formwork component 13 hoisted on the placement card 3 by the limiting edge of the placement card 3, thereby avoiding the safety risk of falling from a height during the hoisting and placement process.

[0053] The formwork support method and construction method for an extra-high parapet wall with an inner wall surface provided by the present invention achieves the formwork support of the extra-high parapet wall 21 by setting up a formwork support platform 4 on the roof floor slab 2 on the inner side of the extra-high parapet wall 21 to be constructed through the inner formwork support platform 4, thus ensuring the safety of the formwork support and avoiding the problem of increased formwork risk when construction workers support the formwork through cantilevered scaffolding on the outer side of the roof floor slab 2.

[0054] The formwork support method and construction method for an extra-high parapet wall with an inner wall surface shape provided in this embodiment of the invention use a wooden back beam 6 to level and align the inner formwork 5 at the concave surface of the inner wall surface shape of the extra-high parapet wall 21 with the wooden formwork at the flat surface, thereby using a whole wooden secondary beam 7 to support the inner formwork 5 over a large area, which improves the support accuracy of the inner formwork 5.

[0055] The formwork support method and construction method for extra-high parapet walls with inner wall shapes provided in this invention embodiment can more conveniently and quickly support and construct extra-high parapet walls with irregular inner shapes, solving the problem of cost-effective construction of extra-high parapet walls 21 with inner wall shapes in steel structure buildings without external protective scaffolding.

[0056] This invention is not limited to the specific embodiments described above. Obviously, the embodiments described above are only a part of the embodiments of this invention, not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of this invention are within the scope of protection of this invention. Those skilled in the art can make other modifications and variations to this invention. Therefore, if these modifications and variations of this invention fall within the scope of the claims of this invention, then this invention also intends to include these modifications and variations.

Claims

1. A formwork method for constructing an inner wall surface shaped superhigh parapet, characterized in that, For formwork support of extra-high parapet walls with interior wall designs in steel structure buildings, a tie-panel formwork system is used as the formwork structure for extra-high parapet walls with interior wall designs. The inner formwork is made of wood, and the outer formwork is made of steel, including: In the roof slab constructed on the steel beams of a steel structure building, a mounting bracket is pre-embedded, so that the mounting bracket extends horizontally or upwardly out of the end of the roof slab, and the end of the mounting bracket has an upwardly bent limiting edge. A formwork platform was erected on the roof floor slab; The steel reinforcement bars for the extra-high parapet wall are tied to the roof slab using a formwork platform; Wooden formwork is spliced ​​on the inside of the wall reinforcement to form an inner formwork that matches the inner wall shape of the ultra-high parapet wall. When the inner wall shape of the ultra-high parapet wall is a plane at the bottom and a concave surface at the top relative to the plane, the inner formwork at the concave surface is leveled and aligned with the wooden formwork at the plane by wooden back ribs, and wooden secondary beams are installed, thereby completing the scattered assembly of the inner formwork and wooden secondary beams on the inside of the tie formwork system. The outer formwork, square steel pipe secondary beam, double steel pipe main beam, mountain-shaped clamp and nuts on the outside of the tie formwork system are welded together to form an outer formwork assembly. The outer formwork assembly is then hoisted onto the support clamps on the outside of the wall reinforcement and is located within its limiting edge using hoisting equipment. Each tie rod of the tie formwork system passes through the inner formwork, wall reinforcement and outer formwork assembly and is threaded onto the corresponding nut on the outer formwork assembly; The inner double-section steel pipe main beam and the mountain-shaped clamp are installed by passing tie rods through the outer side of the timber secondary beam and fastening the tie rods with nuts. This completes the scattered assembly of the double-section steel pipe main beam, mountain-shaped clamp and nuts on the inner side of the tie formwork system. The inner formwork and outer formwork are then tightened by the fastened tie rods to form an ultra-high parapet wall support structure with an inner wall surface shape.

2. The formwork method for the inner wall surface modeling superhigh coping according to claim 1, characterized in that, When the inner shape of the upper part of the ultra-high parapet wall also includes a convex surface arranged at the top along the concave surface and the convex surface is not on the same vertical plane as the plane, a U-shaped clamping mold with an integrated structure is used to clamp between the inner and outer templates of the corresponding area of ​​the convex surface. Tie rods are used to pass through the U-shaped clamping mold, and double-connected steel pipe main beams and their mountain-shaped clips are installed at the tie rods. The two ends of the tie rods passing through the U-shaped clamping mold are fastened to the mountain-shaped clips at the corresponding positions with nuts to form a top convex surface clamping mold structure.

3. The formwork method for the inner wall surface modeling superhigh coping according to claim 2, characterized in that, The upper end of the timber secondary beam is pressed against the inner formwork at the junction of the concave and convex surfaces, and the inner formwork at the corresponding junction extends outward to provide a pressing position for the timber secondary beam.

4. The formwork method for the inner wall surface modeling superhigh coping according to claim 3, characterized in that, When the width between the U-shaped clamps is greater than the thickness of the top wall at the convex surface, the gap between the U-shaped clamps and the inner and / or outer templates is filled with wooden backings to seal it.

5. The formwork method for the inner wall modeling superhigh coping according to claim 1, characterized in that, Also includes: Step S8: An inclined steel pipe brace is connected between the roof floor slab on the inner side of the ultra-high parapet wall formwork structure and the double-layer steel pipe main beam on the inner side, and the ultra-high parapet wall formwork structure with inner wall surface shape is supported by the steel pipe brace.

6. The formwork method for the inner wall surface modeling superhigh coping according to claim 5, characterized in that, Also includes: Step S9: Connect steel wire ropes at an incline between the roof slab on the inner side of the ultra-high parapet wall formwork structure and the double-layered steel pipe main beam on the inner side. Use the steel wire ropes to fine-tune and correct the vertical distribution of the ultra-high parapet wall formwork structure with the inner wall surface shape.

7. The formwork method for the inner wall surface modeling superhigh coping according to claim 1, characterized in that, The formwork platform is a scaffold.

8. The formwork method for the inner wall surface modeling superhigh coping according to claim 1, characterized in that, A plurality of steel bar hangers are welded to the upper end of the steel formwork of the outer formwork assembly.

9. A construction method of an inner wall surface modeling superhigh parapet, characterized by, The construction of the super-high parapet wall with an inner wall surface modeling in a steel structure building adopts the formwork method of the super-high parapet wall with an inner wall surface modeling according to any one of claims 1-8 to construct the super-high parapet wall with an inner wall surface modeling, pours concrete in the super-high parapet wall formwork structure to form the super-high parapet wall with an inner wall surface modeling.

10. The construction method of an inner wall-forming superhigh coping according to claim 9, wherein The inner wall surface modeling of the super-high parapet wall is a wall surface modeling structure of a bottom plane, an upper concave surface or a wall surface modeling structure of a bottom plane, a middle concave surface and a top convex surface. The inner wall surface modeling of the super-high parapet wall is a wall surface modeling structure of a bottom plane, an upper concave surface or a wall surface modeling structure of a bottom plane, a middle concave surface and a top convex surface.

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