CN214090973U - Bottom formwork supporting steel frame for pouring reinforced concrete cylindrical bin top concrete - Google Patents

Bottom formwork supporting steel frame for pouring reinforced concrete cylindrical bin top concrete Download PDF

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Publication number
CN214090973U
CN214090973U CN202022309249.4U CN202022309249U CN214090973U CN 214090973 U CN214090973 U CN 214090973U CN 202022309249 U CN202022309249 U CN 202022309249U CN 214090973 U CN214090973 U CN 214090973U
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truss
pipe
steel frame
ring
support
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杨翔虎
陈先进
马文浩
陆志刚
王哲敏
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Zhenjiang Construction Group Co ltd
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Zhenjiang Construction Group Co ltd
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Abstract

The utility model is used for casting the bottom template supporting steel frame of reinforced concrete silo top concrete, the central ring is fixedly connected with a plurality of pipe trusses which radiate uniformly to the periphery, and an umbrella-shaped supporting steel frame with an integral structure is formed; after the construction of the cylinder wall of the reinforced concrete cylindrical bin is finished, assembling a center ring and a plurality of sheet pipe trusses in the cylindrical bin to form a supporting steel frame integral structure, lifting the supporting steel frame integral structure to a proper position at the top of the cylindrical bin by a hoisting system, limiting, fixedly installing and connecting the supporting steel frame integral structure with steel corbels on embedded parts of the cylinder wall of the cylindrical bin through bolts to serve as a bearing platform, erecting a support and installing a template on the supporting steel frame according to the design requirements of drawings, and achieving the purpose of cast-in-place concrete construction at the top of the bin; the construction method has the advantages that the workload of building site scaffolds is reduced, the construction and construction time is saved, the working efficiency is improved, the construction cost is reduced, the number of the truss sections of each pipe truss is adjusted, and the construction requirements of cylindrical warehouses with different diameters can be met.

Description

Bottom formwork supporting steel frame for pouring reinforced concrete cylindrical bin top concrete
Technical Field
The utility model belongs to the technical field of the silo building, concretely relates to a die block board supports steelframe for pouring reinforced concrete silo storehouse top concrete.
Background
After the vertical cylindrical silo wall of the concrete cylindrical silo is poured, a silo top is additionally poured above the silo wall to form a complete cylindrical silo, a construction method for erecting a scaffold formwork in the silo is generally adopted in the concrete pouring construction process of the silo top in the prior art, a large amount of materials such as steel pipes and fasteners are required for erecting the scaffold, the scaffold is formed by sequentially combining and connecting the materials from bottom to top, the workload is large, the consumed time is long, and the working efficiency is low; the internal space of the cylindrical bin is narrow, so that the mounting, connecting and operating are inconvenient; the cylindrical bin wall is usually only provided with a plurality of small holes in positions such as doors, windows and access holes, a large-scale material transportation channel is not provided, scaffold materials can be hoisted and carried through a tower crane before the bin top is poured, a part of workload is reduced, but the scaffold is more difficult to disassemble and transport after the bin top is poured, the materials are easily damaged and scrapped, and the construction cost investment is increased.
Disclosure of Invention
The utility model aims to solve the technical problem that a simple structure is provided, erection joint convenient operation can improve the efficiency of construction, reduces construction cost for the die block board support steelframe of pouring reinforced concrete silo storehouse top concrete.
The utility model is used for pour the die block support steelframe of reinforced concrete silo storehouse top concrete, its characterized in that: the pipe truss structure comprises a central ring, wherein the central ring is fixedly connected with a plurality of pipe trusses which radiate uniformly to the periphery, a plurality of truss connecting rods are arranged between each pipe truss and the adjacent pipe truss, and the outer end of each pipe truss is provided with a mounting seat to form an umbrella-shaped supporting steel frame of an integral structure;
the central ring comprises an upper supporting ring, a lower supporting ring and a plurality of vertical supporting rods fixedly connected between the upper supporting ring and the lower supporting ring, the vertical supporting rods are uniformly distributed along the circumferential direction, and the position of each pipe truss in the circumferential direction corresponds to each vertical supporting rod;
the upper support ring and the lower support ring are respectively of a circular-ring tubular structure formed by combining two semicircular pipes, two ends of each semicircular pipe are respectively fixed with a flange plate, and the two semicircular pipes are fixedly connected through the flange plates to form the circular-ring tubular structure;
n vertical support rods are arranged between an upper support ring and a lower support ring of the central ring, an upper semi-circular pipe of the upper support ring and a lower semi-circular pipe of the lower support ring are fixedly connected through N/2 vertical support rods to form a semi-central ring, and the two semi-central rings are fixedly connected through a flange plate to form an integral central ring;
each pipe truss is formed by connecting a plurality of truss sections which are sequentially arranged from inside to outside end to end, and each truss section comprises an upper truss pipe, a lower truss pipe, an inclined truss pipe and a vertical truss pipe which are fixedly connected between the upper truss pipe and the lower truss pipe; the first section of truss section at the inner side of each pipe truss is fixedly connected with the upper end and the lower end of the vertical supporting rod at the corresponding positions through the inner end parts of the upper truss pipe and the lower truss pipe respectively;
the upper truss pipe and the lower truss pipe of each truss section are respectively arc pipes, so that each pipe truss is of an arc sheet structure, and the pipe truss frames of a plurality of arc sheet structures are fixedly connected through a central ring and truss connecting rods to form an arc spherical surface supporting steel frame;
a truss connecting rod is fixedly connected between the outer ends of the truss pipes on the truss sections corresponding to the adjacent two pipe truss frames respectively, and all the truss connecting rods between all the pipe truss frames form a plurality of concentric circles concentric with the central ring; two sides of the outer end of the lower truss pipe of the truss section of the adjacent two pipe trusses which correspond to each other are fixedly supported on truss connecting rods at corresponding positions through diagonal draw bars respectively;
the mounting seat comprises an embedded part, a steel corbel is fixedly connected to the embedded part, and the outer end of the lower truss pipe of the truss section at the tail end of each pipe truss is fixedly connected to a top plate of the steel corbel through a support;
the embedded part is provided with a plurality of horizontal support legs; the cross section of the steel bracket is of an I-shaped structure, one end of the steel bracket is provided with a vertical mounting plate, and the mounting plate is fixedly connected to the embedded part;
the steel corbel bottom plate is obliquely arranged, and a reinforcing rib plate is arranged in the middle of the steel corbel.
The utility model discloses a die block board support steelframe for pouring reinforced concrete silo storehouse top concrete, after the section of thick bamboo wall construction of reinforced concrete silo, assemble centre ring and a plurality of piece pipe trusses and constitute support steelframe overall structure inside the silo, promote to the suitable position in silo top by hoist and mount system, through the spacing fixed mounting of the steel corbel on bolt and the embedded part of silo section of thick bamboo wall, as load-bearing platform, set up the support according to the drawing design requirement on the support steelframe again, the installation template, reach the purpose of storehouse top cast in situ concrete construction, moreover, the steam generator is simple in structure, the installation, dismantle convenient operation; need not to build the scaffold frame from bottom to top in the inside narrow and small space of silo, alleviateed on-the-spot scaffold frame and set up work load, practiced thrift construction building time, improved work efficiency, reduced construction cost, the truss section quantity of every pipe truss of adjustment can adapt to the building demand of different diameter silos promptly.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a bottom formwork supporting steel frame for pouring concrete at the top of a reinforced concrete silo in an embodiment of the utility model;
fig. 2 is an enlarged schematic view of a planar structure of one of the pipe trusses of the bottom formwork supporting steel frame for pouring concrete at the top of the reinforced concrete silo in the embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a bottom formwork support steel frame center ring three-dimensional structure for pouring reinforced concrete silo top concrete in the embodiment of the present invention;
fig. 4 is an enlarged schematic view of a plane structure of a bottom formwork support steel frame for pouring reinforced concrete silo top concrete and a fixed installation connection of an embedded part on the wall of a silo cylinder in the embodiment of the utility model;
fig. 5 is an enlarged schematic view of the embodiment of the utility model provides a bottom form support steelframe for pouring reinforced concrete silo storehouse top concrete and the enlarged schematic view of the spatial structure of built-in fitting fixed mounting connection on the silo section of thick bamboo wall.
Detailed Description
As shown in the figure, a bottom formwork supporting steel frame for pouring reinforced concrete silo top concrete is provided, and comprises a center ring 2, a plurality of pipe trusses 1 are fixedly connected to the center ring 2, the plurality of pipe trusses 1 are uniformly radiated to the periphery along the circumferential direction, a plurality of truss connecting rods 3 are arranged between each pipe truss 1 and an adjacent pipe truss, an installation seat 4 is arranged at the outer end of each pipe truss 1, and each pipe truss 1 of the supporting steel frame is fixedly connected to the top end of a cylinder wall 100 of a silo through the installation seat 4 to form an umbrella-shaped supporting steel frame of an integral structure; after the construction of the cylinder wall of the reinforced concrete cylindrical bin is finished, assembling a center ring and a plurality of sheet pipe trusses in the cylindrical bin to form a supporting steel frame integral structure, lifting the supporting steel frame integral structure to a proper position at the top of the cylindrical bin by a hoisting system, limiting, fixedly installing and connecting the supporting steel frame integral structure with steel corbels on embedded parts of the cylinder wall of the cylindrical bin through bolts to serve as a bearing platform, erecting a support and installing a template on the supporting steel frame according to the design requirements of drawings, and achieving the purpose of cast-in-place concrete construction at the top of the bin; need not to build the scaffold frame from bottom to top in the inside narrow and small space of silo, alleviateed on-the-spot assembly connection work load, practiced thrift construction building time, improved work efficiency, reduced construction cost, the truss section quantity of every pipe truss of adjustment can adapt to the building demand of different diameter silos promptly.
Specifically, the center ring 2 is composed of an upper support ring 21, a lower support ring 23, and a plurality of vertical support rods 22 fixedly connected between the upper support ring 21 and the lower support ring 23, the plurality of vertical support rods 22 are uniformly distributed along the circumferential direction, the position of each pipe truss 1 in the circumferential direction corresponds to each vertical support rod 22, namely, each pipe truss 1 extends along the diameter direction from the axis of the center ring to one vertical support rod 22 in the corresponding position, each vertical support rod 22 provides installation and positioning for each pipe truss 1, and the installation and connection operation is convenient.
Furthermore, the upper support ring 21 and the lower support ring 23 are respectively a circular tubular structure formed by combining two semicircular pipes, two ends of each semicircular pipe are respectively fixed with a flange plate, and the two semicircular pipes are fixedly connected through the flange plates to form the circular tubular structure; in actual operation, N vertical support rods 22 are arranged between an upper support ring 21 and a lower support ring 23 of a center ring 2, an upper semi-circular pipe of the upper support ring 21 and a lower semi-circular pipe of the lower support ring 23 are fixedly connected through the N/2 vertical support rods 22 to form a semi-center ring, and in the processes of storage, transportation and carrying, the two semi-center rings can be overlapped and stored, so that the operation is convenient, and the occupied volume is small; when the assembling and using are needed, the two half center rings are fixedly connected through the flange plates to form the integral center ring, the structure is simple, the number of parts is small, and the installation and the connection are rapid.
Furthermore, each pipe truss 1 is formed by connecting a plurality of truss sections which are sequentially arranged from inside to outside end to end, each truss section comprises an upper truss pipe 11 and a lower truss pipe 12, and an inclined truss pipe 13 and a vertical truss pipe 14 which are fixedly connected between the upper truss pipe 11 and the lower truss pipe 12, and the upper truss pipe 11, the lower truss pipe 12, the inclined truss pipe 13 and the vertical truss pipe 14 form a triangular supporting and stretching structure, so that the supporting strength is high, and the installation and connection are stable and reliable; the first section truss section of each pipe truss 1 located at the inner side is fixedly connected with the upper end and the lower end of the vertical support rod 22 at the corresponding positions through the inner end parts of the upper truss pipe 11 and the lower truss pipe 12, so that the reliability of installation and connection operation is further improved.
Furthermore, an upper truss pipe 11 and a lower truss pipe 12 of each truss section are respectively arranged to be arc pipes, so that each pipe truss 1 is of an arc sheet structure, and the pipe trusses 1 of a plurality of arc sheet structures are fixedly connected through a center ring 2 and a truss connecting rod 3 to form a support steel frame of an arc spherical surface; the area of a sphere is the smallest of the surfaces that enclose a volume, and likewise, the volume that can be enclosed by a surface of a certain area is the largest of the spheres. That is, for this reason, bubbles or droplets occurring in nature are nearly spherical in shape because surface tension tends to minimize local surface area; therefore the utility model discloses a support the steelframe and adopt the arc spherical surface structure, form the space stress structure system of a cang vault formula, can safe effectual bearing storehouse top design load, support intensity height, reliable and stable.
And a truss connecting rod is fixedly connected between the outer ends of the truss tubes on the truss sections corresponding to the adjacent two pipe trusses respectively, all the truss connecting rods 3 between all the pipe trusses form a plurality of concentric circles concentric with the central ring, and the two sides of the outer ends of the truss tubes under the truss sections corresponding to the adjacent two pipe trusses are fixedly supported on the truss connecting rods 3 at corresponding positions through diagonal draw bars 31 respectively, so that the supporting strength and stability are further improved.
The specific structure of mount pad 4 does: the method comprises the following steps that an embedded part 48 is arranged on the position, close to the top end, of the inner surface of the cylinder wall 100 of the cylindrical bin, corresponding to each pipe truss 1, each embedded part 48 is provided with a plurality of horizontal supporting legs 49, and when the cylinder wall 100 of the cylindrical bin is poured, the embedded parts 48 are fixedly buried in the inner surface of the cylinder wall 100 of the cylindrical bin through the horizontal supporting legs 49; each embedded part 48 is fixedly connected with a steel corbel, and the outer end of the lower truss pipe of the tail end truss section of each pipe truss 1 is fixedly connected to a top plate 43 of the steel corbel through a support 42; the concrete structure of each steel corbel is as follows: the steel corbel main body with the cross section of an I-shaped structure is formed by fixedly connecting a top plate 43, a vertical middle partition plate 44 and an obliquely arranged bottom plate 45, and the obliquely arranged bottom plate 45 ensures the bearing performance of the steel corbel; one end of the top plate 43, one end of the vertical middle partition plate 44 and one end of the bottom plate 45 are fixedly connected with a vertical mounting plate 47, and the mounting plate 47 is fixedly connected to an embedded part 48 through welding; in order to further improve the bearing performance of the steel corbel, two vertical reinforcing rib plates 46 can be arranged on two sides of the middle partition plate 44 of the steel corbel respectively.
The utility model discloses a die block board support steelframe for pouring reinforced concrete silo storehouse top concrete, after the section of thick bamboo wall construction of reinforced concrete silo, assemble centre ring and a plurality of piece pipe trusses and constitute support steelframe overall structure inside the silo, promote to the suitable position in silo top by hoist and mount system, through the spacing fixed mounting of the steel corbel on bolt and the embedded part of silo section of thick bamboo wall, as load-bearing platform, set up the support according to the drawing design requirement on the support steelframe again, the installation template, reach the purpose of storehouse top cast in situ concrete construction, moreover, the steam generator is simple in structure, the installation, dismantle convenient operation; need not to build the scaffold frame from bottom to top in the inside narrow and small space of silo, alleviateed on-the-spot assembly connection work load, practiced thrift construction building time, improved work efficiency, reduced construction cost, the truss section quantity of every pipe truss of adjustment can adapt to the building demand of different diameter silos promptly.
The utility model discloses at concrete operation in-process, according to the mechanical properties of the material of design, utilize the load value that the braced system of computer calculation support steelframe can bear.
The support system that supports the steelframe includes: a center ring is arranged in the center of the system, the center ring is composed of two half rings, the half rings are connected with the half rings through flange bolts, the center ring is connected with a pipe truss through flange bolts, each section of the pipe truss is 3m long, the pipe truss can be assembled according to the requirement of the radius of the cylindrical bin, and the pipe truss are also connected through flange bolts. Each pipe truss support is provided with a truss tie rod connected with a truss bolt, the steel corbel and the embedded parts of the warehouse wall are welded, and the end part of the steel truss support and the steel corbel are fixedly connected through bolts.
The concrete construction method of the support steel frame comprises the following steps:
after the construction of the reinforced concrete silo wall is finished:
a. welding and fixing the steel corbel and an embedded part embedded in advance at the side of the warehouse wall;
b. transporting the required pipe truss sheets and the central ring into a silo, and assembling the central ring and the pipe truss according to requirements;
c. hoisting and lifting the assembled steel support to a design height;
d. connecting and fixing the end part of the steel bracket pipe truss and the steel bracket by adopting bolts, and finishing the erection of the steel bracket;
e. and (4) dismantling the steel support according to the reverse procedure after the construction of the bin top is finished and the condition of mould dismantling is met. The steel support is simple to operate, the workload of dismounting is small, a large amount of working hours of dismounting and clearing the scaffold in the bin are saved, the construction efficiency is greatly improved, and the construction cost is greatly reduced.
The method is characterized in that:
a. the steel support is effectively connected among the central ring, the pipe truss and the truss tie rod to form a cang-shaped space stress structure system, and can safely and effectively bear the design load of the bin top.
b. By adjusting the length of the pipe truss, the construction of a cast-in-place roof of silos with different diameters can be used.
As shown in fig. 1 and 3, the center ring 2 has two half center rings connected by flanges, the pipe truss 1 shown in fig. 2 is assembled by truss sections each having a length of 3m according to the required length, and the pipe truss is connected with the pipe truss by flanges. The pipe truss and the center ring are connected by flanges to form a radial shape. Adjacent pipe trusses 1 are connected and fixed into a whole through truss connecting rods 3 by bolts.
FIGS. 4 to 5 are schematic diagrams of connection between the end of the pipe truss and the embedded part of the cylinder wall, and are used for fixing the support steel frame on the cylinder wall of the reinforced concrete cylindrical bin.
The use method of the reinforced concrete cylindrical silo cast-in-place silo top formwork support steel frame comprises the following steps:
as shown in fig. 1, a pipe truss 1 is connected with a center ring 2 through a flange, the pipe truss 1 is connected through a bolt by adopting a truss connecting rod 3, a supporting steel frame is assembled, the supporting steel frame is hoisted to the top of a warehouse through a hoisting device, as shown in fig. 4-5, a steel bracket is welded with an embedded part, and the tail end of the pipe truss is connected with the steel bracket through a support. And (4) after the support steel frame is installed, dismantling the steel support through reverse operation after the construction of the bin top is finished.
A construction method of a formwork support system for the cast-in-place silo top construction of a concrete circular silo is characterized in that after the construction of the wall of a reinforced concrete circular silo cylinder is finished, a support steel frame is assembled in the circular silo, the support steel frame is lifted to a proper position of the top of the silo through a hoisting system (or lifted in a towing mode through a silo sliding formwork platform), the support steel frame is fixed to the side wall of the silo through a certain measure, then a scaffold is erected on the support steel frame according to the design requirements of drawings, and a formwork is installed, so that the purpose of the cast-in-place concrete construction of the silo top is achieved. The device and the method can be widely applied to the construction of various types of cast-in-place silo tops of silos.

Claims (10)

1. The utility model provides a die block board supports steelframe for pouring reinforced concrete silo storehouse top concrete which characterized in that: the umbrella-shaped support steel frame comprises a center ring, wherein the center ring is fixedly connected with a plurality of pipe trusses which radiate uniformly all around, a plurality of truss connecting rods are arranged between each pipe truss and the adjacent pipe truss, and the outer end of each pipe truss is provided with a mounting seat to form an umbrella-shaped support steel frame with an integral structure.
2. The bottom formwork support steel frame for pouring reinforced concrete silo top concrete of claim 1, characterized in that: the center ring is including last support ring and under bracing ring to and a plurality of vertical support rod of fixed connection between last support ring and under bracing ring, a plurality of vertical support rod along circumferencial direction evenly distributed, every pipe truss corresponds mutually with every vertical support rod in the ascending position of circumferencial direction.
3. The bottom form supporting steel frame for pouring reinforced concrete silo top concrete according to claim 2, characterized in that: the upper supporting ring and the lower supporting ring are respectively of a circular ring tubular structure formed by combining two semicircular pipes, two ends of each semicircular pipe are respectively fixed with a flange plate, and the two semicircular pipes are fixedly connected through the flange plates to form the circular ring tubular structure.
4. The bottom form supporting steel frame for pouring reinforced concrete silo top concrete of claim 3, which is characterized in that: n vertical support rods are arranged between the upper support ring and the lower support ring of the center ring, the upper semi-circular tube of the upper support ring and the lower semi-circular tube of the lower support ring are fixedly connected through N/2 vertical support rods to form a semi-center ring, and the two semi-center rings are fixedly connected through a flange plate to form a whole center ring.
5. The bottom formwork supporting steel frame for pouring concrete at the top of the reinforced concrete cylindrical bin as claimed in one of claims 1 to 4, wherein the bottom formwork supporting steel frame comprises: each pipe truss is formed by connecting a plurality of truss sections which are sequentially arranged from inside to outside end to end, and each truss section comprises an upper truss pipe, a lower truss pipe, an inclined truss pipe and a vertical truss pipe which are fixedly connected between the upper truss pipe and the lower truss pipe; the first section of truss section at the inner side of each pipe truss is fixedly connected with the upper end and the lower end of the vertical supporting rod at the corresponding positions through the inner end parts of the upper truss pipe and the lower truss pipe respectively.
6. The bottom formwork support steel frame for pouring reinforced concrete silo top concrete of claim 5, characterized in that: the upper truss pipe and the lower truss pipe of each truss section are arc pipes respectively, so that each pipe truss is of an arc sheet structure, and the pipe trusses of the arc sheet structures are fixedly connected with truss connecting rods through center rings to form an arc spherical surface supporting steel frame.
7. The bottom form supporting steel frame for pouring reinforced concrete silo top concrete of claim 6, which is characterized in that: a truss connecting rod is fixedly connected between the outer ends of the truss pipes on the truss sections corresponding to the adjacent two pipe truss frames respectively, and all the truss connecting rods between all the pipe truss frames form a plurality of concentric circles concentric with the central ring; two sides of the outer end of the lower truss section truss pipe, corresponding to each other, of the truss section truss frames of the two adjacent pipe trusses are fixedly supported on truss connecting rods at corresponding positions through diagonal draw bars respectively.
8. The bottom form supporting steel frame for pouring reinforced concrete silo top concrete of claim 7, which is characterized in that: the mounting seat comprises an embedded part, a steel corbel is fixedly connected to the embedded part, and the outer end of the lower truss pipe of the tail end truss section of each pipe truss is fixedly connected to a top plate of the steel corbel through a support.
9. The bottom form supporting steel frame for pouring reinforced concrete silo top concrete of claim 8, characterized in that: the embedded part is provided with a plurality of horizontal support legs; the cross-section of the steel bracket is of an I-shaped structure, one end of the steel bracket is provided with a vertical mounting plate, and the mounting plate is fixedly connected to the embedded part.
10. The bottom form supporting steel frame for pouring reinforced concrete silo top concrete according to claim 9, characterized in that: the steel corbel bottom plate is obliquely arranged, and a reinforcing rib plate is arranged in the middle of the steel corbel.
CN202022309249.4U 2020-10-16 2020-10-16 Bottom formwork supporting steel frame for pouring reinforced concrete cylindrical bin top concrete Active CN214090973U (en)

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CN202022309249.4U CN214090973U (en) 2020-10-16 2020-10-16 Bottom formwork supporting steel frame for pouring reinforced concrete cylindrical bin top concrete

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Application Number Priority Date Filing Date Title
CN202022309249.4U CN214090973U (en) 2020-10-16 2020-10-16 Bottom formwork supporting steel frame for pouring reinforced concrete cylindrical bin top concrete

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114776000A (en) * 2022-05-28 2022-07-22 中铁广州工程局集团第三工程有限公司 Construction method of arc-shaped roof double-layer formwork system
CN116044148A (en) * 2023-02-23 2023-05-02 河北科技大学 But silo roof assembled space steel truss construction braced system of intelligent monitoring

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114776000A (en) * 2022-05-28 2022-07-22 中铁广州工程局集团第三工程有限公司 Construction method of arc-shaped roof double-layer formwork system
CN116044148A (en) * 2023-02-23 2023-05-02 河北科技大学 But silo roof assembled space steel truss construction braced system of intelligent monitoring

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