A formwork system for hollow thin-walled pier column pouring construction

Abstract

The utility model relates to the technical field of pier construction, and disclose a formwork system for hollow thin -walled pier column pouring construction, including pier, outer formwork, inner formplate and support assembly, and inner formplate is fixed with outer formwork through the tension mechanism, and outer formwork is from below and on divide into first platform, second platform and third platform, and the first platform top is equipped with second platform, and second platform includes second mesa, and the mesa is equipped with adjusting mechanism, and the vertical installation of adjusting mechanism has main back rafter, and the middle part of main back rafter is equipped with back rafter inclined bracing, and back rafter inclined bracing one end is connected on main back rafter, and the other end is connected on adjusting mechanism, and adjusting mechanism includes adjusting seat, adjusting wheel and adjusting strip, and adjusting strip can move on adjusting wheel, and the perpendicularity of back rafter is adjusted with both, has the effect that structure is stable, formwork installation is convenient, and adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a template system for the construction of hollow thin-walled pier columns. Background Technology

[0002] Hollow thin-walled piers are a type of building structure widely used in bridge and high-rise building projects. They are characterized by their hollow interior and use construction techniques such as hydraulic climbing formwork, flipping formwork, and cantilever formwork. However, existing cantilever formwork can cause deformation during pouring construction due to the lateral pressure of concrete, unreasonable support system design, or loose connections between the formwork and support components. This can lead to deviations in the pier's dimensions and shape, and in severe cases, even tilting or collapsing of the formwork during pouring. Utility Model Content

[0003] The purpose of this utility model is to provide a formwork system for the construction of hollow thin-walled piers, so as to solve the problems mentioned in the background art, such as unreasonable design of existing support systems or loose connection parts in the formwork and support components, which cause deformation of the formwork, resulting in deviation of pier dimensions and shape changes, and in severe cases, even tilting or collapse of the formwork during the pouring process.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A formwork system for the construction of hollow thin-walled pier columns includes a pier column, an outer formwork, an inner formwork, and a support assembly. The pier column includes a central hollow area and a pier body surrounding the hollow area. The lower part of the pier body is a pre-cast area, and the upper part is a to-be-cast area. The outer formwork is installed on the outer side of the pier body, and the inner formwork and support assembly are installed on the inner side. The inner formwork and the outer formwork are fixed by a tie mechanism. The outer formwork is divided into a first platform, a second platform, and a third platform from bottom to top. The first platform is located outside the pre-cast area, and the second platform is located on top of the first platform. The second platform includes a second platform, which is horizontally connected to the pre-cast area. An adjustment mechanism is provided on the platform, on which a main back rib is vertically mounted. A back rib diagonal brace is provided in the middle of the main back rib. One end of the back rib diagonal brace is connected to the main back rib, and the other end is connected to the adjustment mechanism. The adjustment mechanism includes an adjustment seat, an adjustment wheel, and an adjustment bar. One end of the adjustment seat is fixed to the poured area, and the other end extends horizontally outward. A slide is provided on the top of the adjustment seat, and an adjustment bar is provided on the slide. One end of the adjustment bar is connected to the bottom of the main back rib, and the other end is connected to the bottom of the back rib diagonal brace. An adjustment wheel is also provided on one side of the adjustment seat, and the adjustment bar can move on the adjustment wheel. The two work together to adjust the verticality of the main back rib.

[0006] Furthermore, the contact surface between the adjusting bar and the adjusting wheel is a rack, the adjusting wheel is a gear, and an adjusting nut is provided at the center of the adjusting wheel. Loosening the adjusting nut causes the adjusting wheel to rotate and move the adjusting bar, adjusting the verticality of the main back rib; tightening the adjusting nut causes the adjusting wheel to move the adjusting bar to stand still, fixing the verticality of the main back rib.

[0007] Furthermore, one end of the adjusting bar is provided with a first connecting block, the first connecting block is provided with a first connecting hole and is connected to the bottom end of the back brace by bolts; the other end of the adjusting bar is provided with a second connecting block, the second connecting block is provided with multiple second connecting holes and is connected to the bottom end of the main back brace by bolts; both ends of the adjusting bar are provided with a number of sliding wheels corresponding to the slide rail, for the adjusting bar to slide on the adjusting seat.

[0008] Furthermore, the adjusting seat is provided with several baffles on both sides, the baffles being used to prevent the adjusting strip from sliding out of the adjusting seat. One end of the adjusting seat is fixed to the poured area by a tripod, and the other end extends horizontally outward and is provided with a support frame.

[0009] Furthermore, the first platform has inner and outer layers. The inner layer of the first platform has several vertical rods, which are fixedly connected to the poured area via tripods. The outer layer of the first platform has several first horizontal rods and first vertical rods, which are fixed together. The bottoms of the inner and outer layers of the first platform are connected by the first support, and the tops are connected to the lower part of the adjustment seat. The outer layer of the first platform also has scissor braces and first diagonal braces, and the uprights are located on the outside of the first diagonal braces.

[0010] Furthermore, the second platform is provided with a base plate near the area to be poured, and a panel is provided on the outside of the base plate. A second vertical bar and a second horizontal bar are provided on the outside of the panel. The main back rib is provided on the outside of the second horizontal bar. Several of the tie rods pass through the panel, the base plate, and the area to be poured in sequence and are connected to the inner template. The base plate is fixedly connected to the area to be poured by several tripods at a position avoiding the tie rods. The second platform also includes a second support under the second platform surface.

[0011] Furthermore, the tie mechanism includes a horizontally arranged tie rod and tie bolts at both ends of the tie rod. The tie rod passes through the inner template, the area to be poured, and the outer template, and is fixed by the tie bolts at both ends.

[0012] Furthermore, the third platform includes a third tabletop horizontally fixed on the panel, the support frame is provided on the outer side of the first tabletop, and the third support is provided at the bottom of the first tabletop.

[0013] Furthermore, the inner template includes an inner template panel, which is provided with a plurality of crisscrossing vertical and horizontal ribs. The horizontal ribs are provided with tie holes corresponding to the positions where the tie rods are located. The horizontal spacing of the tie rods does not exceed 1300mm. The thickness of the inner template panel is 6-8mm. The vertical ribs are made of single channel steel with a spacing of 200-300mm, and the horizontal ribs are made of double channel steel with a spacing of 400-600mm.

[0014] Furthermore, the support assembly includes an inner support rod, a first inner support surface, a second inner support surface, and a third inner support surface. The two ends of the inner support rod are respectively inserted into the poured area. The inner support rod is provided with the first inner support surface, the second inner support surface, and the third inner support surface from top to bottom. The first support surface is a 3-5mm steel plate, the second inner support surface is a 6.3# or 6.5# channel steel, and the third inner support surface is a 10# or 12# channel steel.

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

[0016] The inner vertical bars of the first platform of the outer formwork are fixedly connected to the poured area by tripods, which effectively prevents the platform from swaying during operation. The first horizontal bar and the first vertical bar of the outer layer are cross-fixed to form a stable frame structure, which enhances the load-bearing capacity and resistance to crosswinds of the platform. This inner and outer two-layer structure improves the overall stability of the first platform of the outer formwork.

[0017] The structure consists of two layers: a panel and a base plate. These layers are connected by a tie mechanism and an inner formwork, providing additional support for the inner and outer formwork systems. This prevents the formwork from deforming due to pressure and vibration during concrete pouring and also facilitates installation and disassembly by workers. A main back rib is installed on the outside of the panel, and an adjustment mechanism and diagonal bracing are installed on the outside of the main back rib. In addition to further increasing the structural strength, this also facilitates the adjustment of the verticality of the formwork, avoids deviations during the pouring process, and improves construction accuracy.

[0018] The contact surface between the adjusting bar and the adjusting wheel is designed as a rack and pinion. By loosening or tightening the adjusting nut, the verticality of the main back rib can be finely adjusted, making the operation convenient and simple.

[0019] The inner formwork adopts a crisscrossing vertical and horizontal rib design to ensure the structural strength of the formwork; the combination of channel steel and steel plate in the support components enables the support system to withstand large loads;

[0020] In summary, the formwork and support components of this utility model for hollow thin-walled pier construction work together to solve the problems in the prior art where the formwork deforms due to unreasonable support system design or loose connectors in the formwork and support components, leading to pier size deviations, shape changes, or even collapse. It has the advantages of structural stability, convenient formwork installation, and easy adjustment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall facade structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the adjustment mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the outer template structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the inner template structure of this utility model;

[0025] Figure 5 This is a schematic diagram of the support component structure of this utility model;

[0026] In the diagram: 100-pier column, 110-hollow area, 120-pier body, 121-cast area, 122-area to be cast, 200-outer formwork, 210-first platform, 211-first platform surface, 212-first support, 213-first horizontal bar, 214-first vertical bar, 215-scissor brace, 216-first diagonal brace, 220-second platform, 221-second platform surface, 222-adjusting mechanism, 2221-adjusting seat, 2222-adjusting wheel, 2223-adjusting strip, 2224-sliding wheel, 2225-first connecting block, 2226-second connecting block, 2227-baffle plate, 223-second support Support, 224-Panel, 225-Base plate, 226-Main back rib, 227-Back rib diagonal brace, 228-Horizontal rib, 229-Vertical rib, 230-Third platform, 231-Third tabletop, 232-Third horizontal bar, 233-Third support, 240-Tripod, 250-Upright frame, 300-Inner template, 310-Pulley mechanism, 311-Pulley rod, 312-Pulley bolt, 320-Inner template panel, 330-Horizontal rib, 340-Vertical rib, 350-Pulley hole, 400-Support assembly, 410-Inner support rod, 420-First inner support surface, 430-Second inner support surface, 440-Third inner support surface. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 As shown, a formwork system for the construction of hollow thin-walled piers includes a pier 100, an outer formwork 200, an inner formwork 300, and a support assembly 400. The pier 100 includes a central hollow area 110 and a pier body 120 surrounding the hollow area 110. The lower part of the pier body 120 is a pre-cast area 121, and the upper part is a pre-cast area 122. The outer formwork 200 is installed on the outside of the pier body 120, and the inner formwork 300 and support assembly 400 are installed on the inside. The inner formwork 300 is fixed to the outer formwork 200 by a tie mechanism 310. The outer formwork 200 is divided into a first platform 210, a second platform 220, and a third platform 230 from bottom to top. The first platform 210 is located outside the pre-cast area 121, and the second platform 220 is located on top of the first platform 210. The second platform 220 includes a second platform 221, which is horizontally connected to the pre-cast area 121. An adjustment mechanism 222 is provided on the surface, on which a main back rib 226 is vertically mounted. A back rib diagonal brace 227 is provided in the middle of the main back rib 226. One end of the back rib diagonal brace 227 is connected to the main back rib 226, and the other end is connected to the adjustment mechanism 222. The adjustment mechanism 222 includes an adjustment seat 2221, an adjustment wheel 2222, and an adjustment bar 2223. One end of the adjustment seat 2221 is fixed to the poured area 121, and the other end extends horizontally outward. A slide is provided at the top of the adjustment seat 2221, and an adjustment bar 2223 is provided on the slide. One end of the adjustment bar 2223 is connected to the bottom of the main back rib 226, and the other end is connected to the bottom of the back rib diagonal brace 227. The adjustment wheel 2222 is also provided on one side of the adjustment seat 2221, and the adjustment bar 2223 can move on the adjustment wheel 2222. The two work together to adjust the verticality of the main back rib 226, which facilitates the disassembly and movement of the template.

[0029] like Figure 2As shown, the contact surface between the adjusting strip 2223 and the adjusting wheel 2222 is a rack and pinion, and the adjusting wheel 2222 is a gear. An adjusting nut is provided at the center of the adjusting wheel 2222. Loosening the adjusting nut causes the adjusting wheel 2222 to rotate and move the adjusting strip 2223, adjusting the verticality of the main back rib 226. Tightening the adjusting nut causes the adjusting wheel 2222 to move the adjusting strip 2223 to a standstill, fixing the verticality of the main back rib 226, ensuring that the outer template 200 is accurately positioned, firmly connected, without misalignment or loosening, and maintaining the stability of the outer template 200.

[0030] like Figure 2 As shown, one end of the adjusting strip 2223 is provided with a first connecting block 2225, which has a first connecting hole and is connected to the bottom end of the back brace 227 by bolts; the other end of the adjusting strip 2223 is provided with a second connecting block 2226, which has multiple second connecting holes and is connected to the bottom end of the main back brace 226 by bolts, making the assembly and disassembly of the outer template 200 more flexible and convenient; both ends of the adjusting strip 2223 are provided with a number of sliding wheels 2224 corresponding to the slide rail, which are used for the adjusting strip 2223 to slide on the adjusting seat 2221, reducing the frictional resistance during the adjustment process and making the movement of the adjusting strip 2223 smoother and more stable.

[0031] like Figure 2 As shown, the adjusting seat 2221 has several baffles 2227 on both sides. The baffles 2227 are used to place the adjusting bar 2223 out of the adjusting seat 2221. One end of the adjusting seat 2221 is fixed to the poured area 121 by a tripod 240, and the other end extends horizontally outward and is provided with a stand 250.

[0032] like Figure 1 and Figure 3 As shown, the first platform 210 has inner and outer layers. The inner layer of the first platform 210 has several vertical rods, which are fixedly connected to the poured area 121 via tripods 240. The outer layer of the first platform 210 has several first horizontal rods 213 and first vertical rods 214, which are fixedly intersected. The bottoms of the inner and outer layers of the first platform 210 are connected by the first support 212, and the tops are connected to the lower part of the adjusting seat 2221. The outer layer of the first platform 210 also has scissor braces 215 and first diagonal braces 216. The uprights 250 are provided on the outside of the first diagonal braces 216, so that the first platform 210 can evenly distribute the load when under stress, reducing local stress concentration.

[0033] like Figure 1As shown, the second platform 220 has a base plate 225 near the pouring area 122. The base plate 225 has a panel 224 on its outer side. The panel 224 is a galvanized steel plate with a thickness of 21-24mm. The outer side of the panel 224 has a second vertical bar 229 and a second horizontal bar 228. The outer side of the second horizontal bar 228 has the main back rib 226. Several tie rods 310 pass through the panel 224, the base plate 225, and the pouring area 122 in sequence and are connected to the inner template 300. The base plate 225 is fixedly connected to the pouring area 122 by several tripods 240 at a position avoiding the tie rods 310. The second platform 220 also includes a second support 223 under the second tabletop 221. The two outer templates 200 are connected by a core strip and fixed with a core strip pin to ensure the integrity of the outer template 200.

[0034] like Figure 1 As shown, the tie mechanism 310 includes horizontally arranged tie rods 311 and tie bolts 312 at both ends of the tie rods 311. The tie rods 311 pass through the inner formwork 300, the area to be poured 122, and the outer formwork 200, and are fixed by the tie bolts 312 at both ends. The horizontal spacing of the tie rods 311 does not exceed 1300mm, preventing the inner formwork 300 and the outer formwork 200 from deforming under the weight of the concrete.

[0035] During actual construction, when the 120 tie joint of the pier body satisfies the tie between the inner formwork 300 and the outer formwork 200, PVC sleeves are used to thread the tie rods; when special circumstances such as embedded parts prevent the tie from being satisfied, the tie rod positions are readjusted.

[0036] like Figure 1 As shown, the third platform 230 includes a third tabletop 231 horizontally fixed on the panel 224, the support frame 250 is provided on the outer side of the first tabletop 211, and the third support 233 is provided at the bottom of the first tabletop 211.

[0037] like Figure 4 As shown, the inner mold panel 300 includes an inner mold panel 320, on which a plurality of crisscrossing vertical ribs 340 and horizontal ribs 330 are provided. The horizontal ribs 330 are provided with tie holes 350 corresponding to the positions where the tie rods 311 are located. The inner mold panel 320 is made of plywood with a thickness of 6-8mm. The vertical ribs 340 are made of single-channel steel with a spacing of 200-300mm. The inner mold panel 320 is connected to the vertical ribs 340 with self-tapping screws and floor nails. The horizontal ribs 330 are made of double-channel steel with a spacing of 400-600mm. The vertical ribs 340 and the horizontal ribs 330 are connected with connecting claws to enhance the overall rigidity and bending resistance of the inner mold panel 300.

[0038] like Figure 5 As shown, the support assembly 400 includes an inner support rod 410, a first inner support surface 420, a second inner support surface 430, and a third inner support surface 440. The two ends of the inner support rod 410 are respectively inserted into the cast-in-place area 121. The inner support rod 410 is provided with the first inner support surface 420, the second inner support surface 430, and the third inner support surface 440 from top to bottom. The first inner support surface 420 is a steel plate with a thickness of 3-5mm, the second inner support surface 430 is a 6.3# or 6.5# channel steel, and the third inner support surface 440 is a 10# or 12# channel steel.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A formwork system for the casting construction of hollow thin-walled piers, characterized in that: The system includes a pier column, outer formwork, inner formwork, and supporting components. The pier column comprises a central hollow area and a pier body surrounding the hollow area. The lower part of the pier body is a pre-cast area, and the upper part is a waiting-to-be-cast area. The outer formwork is installed on the outer side of the pier body, and the inner formwork and supporting components are installed on the inner side. The inner formwork is fixed to the outer formwork by a tie mechanism. The outer formwork is divided into a first platform, a second platform, and a third platform from bottom to top. The first platform is located outside the pre-cast area, and the second platform is located on top of the first platform. The second platform includes a second platform, which is horizontally connected to the pre-cast area and has an adjustment mechanism. The adjusting mechanism is vertically mounted with a main back rib. A diagonal brace is located in the middle of the main back rib. One end of the diagonal brace is connected to the main back rib, and the other end is connected to the adjusting mechanism. The adjusting mechanism includes an adjusting seat, an adjusting wheel, and an adjusting bar. One end of the adjusting seat is fixed to the poured area, and the other end extends horizontally outward. A slide rail is located at the top of the adjusting seat, and an adjusting bar is located on the slide rail. One end of the adjusting bar is connected to the bottom of the main back rib, and the other end is connected to the bottom of the diagonal brace. An adjusting wheel is also located on one side of the adjusting seat, and the adjusting bar can move on the adjusting wheel. The two work together to adjust the verticality of the main back rib.

2. The formwork system for casting hollow thin-walled piers according to claim 1, characterized in that: The contact surface between the adjusting bar and the adjusting wheel is a rack, the adjusting wheel is a gear, and an adjusting nut is provided at the center of the adjusting wheel. Loosening the adjusting nut causes the adjusting wheel to rotate and move the adjusting bar, adjusting the verticality of the main back rib; tightening the adjusting nut causes the adjusting wheel to move the adjusting bar to stand still, fixing the verticality of the main back rib.

3. The formwork system for the casting construction of hollow thin-walled piers according to claim 2, characterized in that: One end of the adjusting bar is provided with a first connecting block, the first connecting block is provided with a first connecting hole and is connected to the bottom end of the back brace by bolts; the other end of the adjusting bar is provided with a second connecting block, the second connecting block is provided with multiple second connecting holes and is connected to the bottom end of the main back brace by bolts; both ends of the adjusting bar are provided with a number of sliding wheels corresponding to the slide rail, for the adjusting bar to slide on the adjusting seat.

4. The formwork system for casting hollow thin-walled piers according to claim 3, characterized in that: The adjusting seat has several baffles on both sides, which are used to prevent the adjusting bar from sliding out of the adjusting seat. One end of the adjusting seat is fixed to the poured area by a tripod, and the other end extends horizontally outward and is provided with a support frame.

5. The formwork system for the casting construction of hollow thin-walled piers according to claim 1, characterized in that: The first platform has inner and outer layers. The inner layer of the first platform has several vertical rods, which are fixedly connected to the poured area by tripods. The outer layer of the first platform has several first horizontal rods and first vertical rods, which are fixedly intersected. The bottom of the inner and outer layers of the first platform is connected by a first support, and the top of both is connected to the lower part of the adjustment seat. The outer layer of the first platform is also provided with scissor braces and first diagonal braces, and a vertical frame is provided on the outside of the first diagonal braces.

6. The formwork system for casting hollow thin-walled piers according to claim 1, characterized in that: The second platform has a base plate near the area to be poured. The base plate has a panel on its outer side. The panel has a second vertical bar and a second horizontal bar on its outer side. The second horizontal bar has a main back rib on its outer side. Several tie rods pass through the panel, the base plate, and the area to be poured in sequence and are connected to the inner formwork. The base plate is fixedly connected to the area to be poured by several tripods at a position avoiding the tie rods. The second platform also includes a second support under its second platform surface.

7. The formwork system for casting hollow thin-walled piers according to claim 6, characterized in that: The tie mechanism includes a horizontally arranged tie rod and tie bolts at both ends of the tie rod. The tie rod passes through the inner template, the area to be poured, and the outer template, and is fixed by the tie bolts at both ends.

8. The formwork system for casting hollow thin-walled piers according to claim 1, characterized in that: The third platform includes a third table surface that is horizontally fixed on the panel, a support frame on the outside of the third table surface, and a third support at the bottom of the third table surface.

9. The formwork system for casting hollow thin-walled piers according to claim 7, characterized in that: The inner template includes an inner template panel, which has several crisscrossing vertical and horizontal ribs. The horizontal ribs have tie holes corresponding to the positions where the tie rods are located. The horizontal spacing of the tie rods does not exceed 1300mm. The thickness of the inner template panel is 6-8mm. The vertical ribs are made of single channel steel with a spacing of 200-300mm, and the horizontal ribs are made of double channel steel with a spacing of 400-600mm.

10. The formwork system for the casting construction of hollow thin-walled piers according to claim 1, characterized in that: The support assembly includes an inner support rod, a first inner support surface, a second inner support surface, and a third inner support surface. The two ends of the inner support rod are respectively inserted into the poured area. The inner support rod is provided with the first inner support surface, the second inner support surface, and the third inner support surface from top to bottom. The first inner support surface is a 3-5mm steel plate, the second inner support surface is a 6.3# or 6.5# channel steel, and the third inner support surface is a 10# or 12# channel steel.

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