Large-span formwork supporting device

Abstract

The utility model belongs to the technical field of formwork supporting systems for buildings, and particularly relates to a large-span formwork supporting device. The supporting device comprises a formwork block and a supporting system arranged at the bottom of the formwork block in a supported mode. The supporting system is supported on the ground, and formwork blocks supported on the supporting system are used for pouring concrete to form a new floor slab; the supporting system comprises supporting columns, early-dismantling column heads, formwork main ridges, formwork secondary ridges, transverse rods, inclined struts, connecting pieces and adjustable bases. The supporting columns are used for achieving vertical supporting of the supporting device, and the transverse rods and the inclined struts are used for achieving horizontal supporting of the supporting device. The early-dismantling column head comprises a supporting support and a limiting plate, the supporting support is used for hanging a formwork main ridge, the limiting plate is used for controlling the position of the supporting support, and early dismantling of a formwork is achieved by controlling the supporting support to fall. Most of the formwork supporting system is removed early, the turnover rate of materials is increased, material consumption is reduced, the construction cost is reduced, and meanwhile the construction progress is accelerated.

Description

Technical Field

[0001] The utility model belongs to the technical field of building formwork support systems, and in particular relates to a large-span formwork support device. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] With the progress of society and the development of economy, more and more large buildings are being built, and there are more and more large-span structures. Traditionally, large-span and high-rise formwork construction with a span of more than eight meters is constructed by full-floor scaffolding. The formwork support device can only be removed as a whole when the strength of the poured concrete reaches 100%. Usually, this construction method has a long cycle and slow material turnover, which often becomes a major factor affecting the construction progress. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a large-span formwork support device to solve the problem in the prior art that large-span formwork construction uses full-floor scaffolding for long construction period and slow material turnover, thus affecting the construction progress.

[0005] According to some embodiments, the first solution of the utility model provides a large-span formwork support device, which adopts the following technical solution:

[0006] A large-span formwork support device comprises a formwork block and a support system supported at the bottom of the formwork block; the support system is supported on the ground, and the formwork block supported thereon is used for pouring concrete to form a new floor slab;

[0007] The support system includes a plurality of support columns, early-removal column heads, main formwork ribs, secondary formwork ribs, crossbars, diagonal braces, connectors and an adjustable base;

[0008] The support column is used to realize vertical support of the support device, and an early-removal column head is arranged at the upper end of the support column, and template main ribs are arranged on both sides of the early-removal column head, and the upper surface of the template main rib is flush with the template block surface, and the lower surface of the template block is provided with template secondary ribs; a cross bar and an oblique brace are arranged on the support column to realize horizontal support of the support device, and the oblique brace is arranged between adjacent cross bars; an adjustable base is arranged at the lower end of the support column;

[0009] The early removal column head includes a support bracket and a limit plate; the support bracket is used to hang the main rib of the template, and the limit plate is used to control the position of the support bracket. After the limit plate is removed, the support bracket falls down to realize the early removal of the template block.

[0010] By adopting the above technical solution, the early dismantling of the large-span formwork support system was achieved, which meets the national requirements of energy conservation, emission reduction and green construction. By achieving the early dismantling of most of the formwork support system, the material turnover rate was accelerated, material consumption was reduced, and construction costs were reduced, while also speeding up the construction progress.

[0011] In order to realize hanging the main ribs of the template on the early-removal column head, preferably, the main ribs of the template are thin hollow structures with legs at both ends, and the legs are hung on the supporting brackets of the early-removal column head.

[0012] In order to enhance the bearing capacity of the supporting device, preferably, the secondary ribs of the template are located between the template block and the primary ribs of the template.

[0013] In order to enhance the bearing capacity of the horizontal support, preferably, the support column and the cross bar are connected via a connecting piece.

[0014] In order to enhance the stability of the horizontal support, preferably, the connecting member is a cone pin plum blossom type connecting bracket.

[0015] In order to enhance the stability of the supporting device, preferably, the diagonal brace is arranged between adjacent supporting columns.

[0016] In order to be able to flexibly adjust the height of the support column, preferably, the upper end of the adjustable base is embedded in the lower end of the support column, and the lower end of the adjustable base is supported on the ground for adjusting the height of the support column.

[0017] In order to achieve rear support of the large-span concrete floor after the early removal of the formwork, preferably, the early-removal column head also includes a column head top plate.

[0018] In order to improve the bearing capacity of the supporting device, preferably, the early-removal column head is a precision steel casting.

[0019] In order to improve the bearing capacity of the supporting device, preferably, the template block is an aluminum alloy template block.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The large-span formwork support device provided by the utility model realizes the early dismantling of the large-span formwork support system, which meets the national requirements of energy conservation and emission reduction and green construction. By realizing the early dismantling of most of the formwork support system, the material turnover rate is accelerated, the material consumption is reduced, the construction cost is reduced, and the construction progress is accelerated.

[0022] The large-span formwork supporting device provided by the utility model can be used in conjunction with formworks and primary and secondary ribs of various specification series, and has multiple functions and strong adaptability.

[0023] The large-span formwork support device provided by the utility model is easy to operate, the construction process is easy to master, and the work efficiency is improved; at the same time, the utility model has clear structural force, neat brackets, safety and reliability, and ensures the quality of the construction project. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 It is a structural schematic diagram of a large-span formwork support device of the utility model;

[0026] Figure 2 It is a top view of the large-span formwork support device of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the early-removal column head of the large-span formwork support device of the utility model;

[0028] Figure 4 (a) is a schematic structural diagram of the early-removal column head of the utility model in a formwork state;

[0029] Figure 4 (b) is a schematic structural diagram of the early-removal column head of the utility model in a demoulding state;

[0030] Figure 5 It is a schematic diagram of three-stage flow operation of a large-span formwork support device of the utility model.

[0031] In the figure: 1. Concrete; 2. Formwork block; 3. Early-removal column head; 4. Secondary formwork rib; 5. Main formwork rib; 6. Connector; 7. Diagonal brace; 8. Crossbar; 9. Support column; 10. Adjustable base; 11. Column head top plate; 12. Support bracket; 13. Limit plate; 14. Leg. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] The utility model provides a large-span formwork support device, which is used for casting and forming large-span floor slabs. In the existing practice, a full-floor scaffolding support system is usually used to support large-span floor slabs greater than eight meters, and the scaffolding can only be removed for turnover use after the floor slab strength reaches 100%, which slows down the material turnover and affects the construction progress. The large-span formwork support device of the utility model realizes the early removal of most of the formwork support system, speeds up the material turnover rate, reduces material consumption, breaks the traditional limitations of increasing the number of matching molds and improving the concrete strength grade, and has a huge demonstration effect in the industry.

[0034] See also Figure 1 The large-span formwork support device of the utility model comprises a formwork block 2 and a support system supported at the bottom of the formwork block 2, wherein the support system is composed of a support column 9, an early-removal column head 3, a main formwork rib 5, a secondary formwork rib 4, a crossbar 8, a diagonal brace 7, a connector 6 and an adjustable base 10; wherein the support system is used to support the formwork block, and concrete 1 is poured on the formwork block to form a desired concrete structure. Generally, the support system is supported on the ground or floor slab, and the formwork block supported thereon is used to pour concrete to form a new floor slab.

[0035] Combination Figure 1 and Figure 2 As shown, an early demolition column head 3 is arranged at the top of the support column 9; a template main rib 5 is arranged on both sides of the early demolition column head 3, and the template main rib 5 is a thin hollow structure with legs 14 at both ends. The legs 14 are arranged on the support bracket 12 of the early demolition column head 3 for transferring load; the upper surface of the template main rib 5 is flush with the template block 2, and the template secondary rib 4 is located between the template block 2 and the template main rib 5, which is used to transfer the load of the template block 2 to the template main rib 5. A connecting piece 6 is arranged on the column body of the support column 9, and the connecting piece is a cone pin plum blossom type connecting bracket, which is used to connect the cross bar 8 between two adjacent support columns; an oblique brace 7 is arranged between the two adjacent cross bars, and the oblique brace 7 is connected to the support column 9 in a grip card type, so that it can fix two mutually parallel support columns at any angle to form a stable geometric structure. An adjustable base 10 is set at the lower end of the support column 9. The adjustable base 10 is an adjustable anchor bolt. The upper end of the adjustable base 10 is embedded in the lower end of the support column 9. The lower end of the adjustable base 10 is supported on the ground. The adjustable base 10 is used to adjust the height of the support column 9.

[0036] Combination Figure 3 and Figure 4As shown in (a) and (b), the early-removal column head 3 is a precision steel casting, which is used to support the main rib 5 of the formwork; the support leg 14 of the main rib 5 of the formwork is hung on the support bracket 12 of the early-removal column head 3. After the floor slab concrete has been poured for a period of time, that is, the concrete strength reaches 50% of the design strength, the limit plate 13 of the early-removal column head 3 can be knocked to make the support bracket 12 fall. At this time, the main rib 5 of the formwork, the secondary rib 4 of the formwork and the formwork block 2 can be removed first, and the column head top plate 11 of the early-removal column head 3 is in contact with the concrete, and the support column 9 remains stationary until the concrete strength increases to be sufficient to support its own weight and construction load under full-span conditions.

[0037] Preferably, the main rib 5 of the template can adopt a thin hollow structure with a flange at the upper end. After installation, the upper surface is flush with the template block 2. Its two side flanges are used to support the template block 2, and the two ends are hung on the support bracket 12 of the early-removed column head 3 through support legs 14 to transfer the load.

[0038] The support column 9 is used to realize the vertical support of the large-span formwork support device of this embodiment. The upper and lower support columns are connected by the vertical pole connecting joints, and the vertical pole connecting joints are precision steel castings; tapered pin plum blossom type connecting brackets are welded at appropriate positions of the support columns 9 to connect with the cross bar 8, and the connecting piece 6 is a precision steel casting; the cross bar 8 is used to realize the horizontal support of the large-span formwork support device of this embodiment. Tapered pin type connecting pins are welded at both ends of the cross bar 8 to connect with the tapered pin plum blossom type connecting brackets on the support column 9. The specific method is to insert the connecting pin of the cross bar 8 into the hole of the connecting piece on the support column 9, and the two can be firmly connected together after knocking, which is easy to operate; the diagonal brace 7 is connected to the support column 9 by a grip-type installation method, so that it can fix two adjacent support columns at any angle to constitute a geometrically invariant part and form a stable geometric structure, thereby enhancing the bearing capacity.

[0039] The adjustable base 10 is an adjustable anchor bolt used to adjust the height of the support column 9. The upper end of the adjustable base 10 is inserted into the lower end of the support column 9, and the lower end of the adjustable base 10 is supported on the ground. The adjustment range can be set manually.

[0040] The formwork block 2 of the support device of this embodiment adopts an aluminum alloy formwork. Compared with the traditional wooden formwork, the concrete cast using the aluminum alloy formwork has a good appearance and high quality; compared with the large steel formwork, the aluminum alloy formwork is lighter in weight, easier to install, and has a higher bearing capacity, making it more suitable for casting large-span floor slabs.

[0041] The large-span formwork support device of the utility model can realize the circulation operation of small flow sections and speed up the turnover of formwork and support. Figure 5As shown in the figure, A, B, and C represent three flow sections. The needs of flow construction can be met by configuring the formwork blocks, horizontal supports of one flow section, and vertical supports of two flow sections. The vertical supports include early-removal column heads, support columns, and adjustable bases, accounting for about two-thirds of all supports. When the formwork is removed, the floor slab concrete has not yet reached the specified demolding strength, and the vertical supports still need to be retained. Therefore, when the next flow section is constructed, spare vertical supports need to be used. The horizontal supports include the main ribs of the formwork, the secondary ribs of the formwork, the crossbars, and the diagonal braces. Under normal circumstances, this part of the support can be removed at the same time as the formwork and transferred to the next flow section for construction. Through this small flow section cycle operation, the early removal of the formwork of the large-span floor slab formwork project can be achieved. While ensuring the quality of the project, the turnover rate of the turnover materials is improved, material consumption is saved, and costs are reduced. At the same time, the construction efficiency is improved and the construction progress is accelerated.

[0042] The working principle of the utility model is specifically as follows:

[0043] When supporting the formwork, first adjust the height of the support column according to the floor elevation, install the early-removed column head, raise the column head top plate, design the first support column according to the template, hang the first template main rib on the first support column, hang the other end of the first template main rib on the support column adjacent to the first support column, then fix the crossbar on the support column through the connector, and then hang the second template main rib in turn. Complete the support work of the main column and template rib of the first lattice structure according to the template design drawing and layout drawing. When the first lattice structure is completely erected, install the template block. Erect the remaining support columns and template main and secondary ribs in turn; adjust the position of the column according to the length of the template main column so that the support column is perpendicular to the ground, and then use a level to adjust the horizontality of the template; finally install the diagonal brace and lock the connectors one by one.

[0044] When removing the formwork, knock on the limit plate of the column head that was removed earlier to make the supporting support fall down, and the main and secondary ribs of the formwork will fall down accordingly. Remove the formwork blocks one by one, and knock lightly during unloading to make the formwork blocks fall on the flange of the main rib of the formwork; then remove the main rib of the formwork, remove the horizontal support and diagonal support; finally, wait until the concrete strength of the floor slab reaches the design requirements, and then remove all the supporting columns.

[0045] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A large-span formwork support device, characterized in that: It includes a template block and a support system supported at the bottom of the template block; the support system includes a plurality of support columns, early-removal column heads, template main ribs, template secondary ribs, crossbars, diagonal braces, connectors and an adjustable base; The support column is used to realize vertical support of the support device, and an early-removal column head is arranged at the upper end of the support column, and template main ribs are arranged on both sides of the early-removal column head, and the upper surface of the template main rib is flush with the template block surface, and the lower surface of the template block is provided with template secondary ribs; a cross bar and an oblique brace are arranged on the support column to realize horizontal support of the support device, and the oblique brace is arranged between adjacent cross bars; an adjustable base is arranged at the lower end of the support column; The early removal column head includes a support bracket and a limit plate; the support bracket is used to hang the main rib of the template, and the limit plate is used to control the position of the support bracket. After the limit plate is removed, the support bracket falls down to realize the early removal of the template block.

2. A large-span formwork support device as claimed in claim 1, characterized in that: The main rib of the template is a thin hollow structure with legs at both ends, and the legs are hung on the supporting brackets of the early-removed column heads.

3. A large-span formwork support device as claimed in claim 1, characterized in that: The secondary ribs of the template are located between the template block and the primary ribs of the template.

4. A large-span formwork support device as claimed in claim 1, characterized in that: The support column and the cross bar are connected via a connecting piece.

5. A large-span formwork support device as claimed in claim 4, characterized in that: The connecting piece is a cone pin plum blossom type connecting bracket.

6. A large-span formwork support device as claimed in claim 1, characterized in that: The diagonal brace is arranged between adjacent supporting columns.

7. A large-span formwork support device as claimed in claim 1, characterized in that: The upper end of the adjustable base is embedded in the lower end of the supporting column, and the lower end of the adjustable base is supported on the ground.

8. A large-span formwork support device as claimed in claim 1, characterized in that: The early-removal column capital also includes a column capital top plate.

9. A large-span formwork support device as claimed in claim 1, characterized in that: The early-removal column head is a precision steel casting.

10. A large-span formwork support device as claimed in claim 1, characterized in that: The template block is an aluminum alloy template block.

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