CN114737750A - Construction method for reinforced concrete silo top plate template - Google Patents
Construction method for reinforced concrete silo top plate template Download PDFInfo
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- CN114737750A CN114737750A CN202210519276.5A CN202210519276A CN114737750A CN 114737750 A CN114737750 A CN 114737750A CN 202210519276 A CN202210519276 A CN 202210519276A CN 114737750 A CN114737750 A CN 114737750A
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- silo
- top plate
- platform
- construction method
- slip
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/22—Sliding forms raised continuously or step-by-step and being in contact with the poured concrete during raising and which are not anchored in the hardened concrete; Arrangements of lifting means therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/51—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for storing agricultural or horticultural products
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention relates to a construction method of a reinforced concrete silo top plate template, which is characterized in that after the construction of silo walls in a slip form is completed, a slip form platform is lowered to a preset elevation for the first time and then is reinforced to serve as a top plate template supporting platform for construction of a silo top plate; and after the construction of the silo top plate is completed, lowering the slip-form platform to the ground for the second time and integrally dismantling the slip-form platform. The lowered and fixed slip form platform is used as an operation platform for dismantling the slip form lifting frame and the template, and the workload and the safety risk of lifting on the top surface of the vertical silo are reduced. The slip form platform is used as a supporting point and a working surface of the support of the silo top plate template, the construction process is simple, the operation is convenient, the cost is reduced, and the construction progress is accelerated. The slip form platform is disassembled on the ground after being descended for the second time, so that an operator does not need to work high above the ground, the risk of the work high above the ground is greatly reduced, and the safety of construction work is improved.
Description
Technical Field
The invention relates to the technical field of silo construction, in particular to a reinforced concrete silo top plate template construction method.
Background
With the further acceleration of the industrial construction process, a large number of large silo structures frequently appear in industrial buildings, and with the wider application range of silos, the function of the attached building at the top of the silo in the use of the whole silo is more and more prominent, so that higher requirements are provided for the construction quality of a top plate at the top of the silo, and the construction of a supporting formwork at the top of the silo is an important part in the construction of the top plate.
If a traditional template vertical supporting system is adopted for silo top plate template support, a large amount of templates and supporting materials are needed, and the silo is almost closed to pass in and out, so that a large amount of manpower is consumed, the construction cost is increased, the construction period is prolonged, and a tall and narrow working surface in the silo has larger potential safety hazard for construction operation.
Disclosure of Invention
The invention aims to provide a reinforced concrete silo top plate template construction method capable of improving construction safety.
In order to achieve the purpose, the invention adopts the technical scheme that: a reinforced concrete silo roof template construction method, after the silo wall slip-form construction is finished, the slip-form platform is lowered to the predetermined elevation for the first time and then is reinforced to be used as a roof template supporting platform for the silo roof construction; and after the construction of the silo top plate is completed, lowering the slip-form platform to the ground for the second time and integrally dismantling the slip-form platform.
Further, during construction of the silo wall, an embedded steel plate is arranged in the silo wall and serves as a supporting point when the slip-form platform descends for the first time.
Furthermore, anchor bars are arranged on the back of the steel plate of the embedded steel plate and are welded with steel bars on the wall of the silo.
Furthermore, the front surface of the steel plate of the pre-embedded steel plate is recessed into the wall surface of the silo by 2-5 mm.
Further, the embedded steel plates comprise main embedded steel plates and secondary embedded steel plates, the main embedded steel plates are used as supporting points of the sliding mode platform truss, and the secondary embedded steel plates are used as supporting points of reinforcing inclined struts of the sliding mode platform truss.
And further, after the construction of the silo wall slip form is completed, removing the slip form equipment accessories.
Further, when the sliding mode platform descends for the first time, the sliding mode lifting frame is used for being reinforced to serve as a hanging point of the chain block, the steel corbel is welded at the position of the embedded steel plate, the sliding mode platform is integrally descended to a support seat surface of the steel corbel through the chain block, a truss of the sliding mode platform is welded with the steel corbel, then a top plate support and a template are installed, and silo top plate construction is conducted.
Further, after the sliding mode platform truss and the steel corbel are welded, a layer of plywood is additionally paved on the sliding mode platform.
Further, the concrete of the top plate of the silo is poured and tamped for two times, the concrete is tamped for the first time to a position 50mm below the plate surface, and the concrete of the top plate of the silo is tamped after 24 hours.
Further, when the sliding-mode platform descends for the second time, the top plate template is dismantled and cleaned, a chain block hanging point is arranged at the upper part of the top plate of the silo, and a chain block hanging chain is fixed at the end of the sliding-mode platform truss through a preformed hole in the plate surface of the top of the silo; and the sliding mode platform is integrally descended to the ground by utilizing the chain block.
The steel plate is pre-buried in the wall of the silo in the slip-form process, after the slip-form is finished, part of slip-form equipment accessories are firstly removed, after the slip-form lifting frame and the supporting rod are reinforced, the chain block is hung to integrally descend the slip-form platform, the lowered and fixed slip-form platform is used as an operation platform for removing the slip-form lifting frame and the template, and the workload and the safety risk of lifting on the top surface of the vertical silo are reduced.
The slip form platform is used as a supporting point and a working surface of the supporting of the top plate template of the silo, and the height of the platform is set according to the structure and the condition of the template installation operation requirement so as to reduce the supporting of the template. The construction process is simple, the operation is convenient, the cost is reduced, and the construction progress is accelerated.
After the construction of the silo top plate concrete is completed, the slip-form platform descends for the second time and descends to the ground for disassembly, operators do not need to work high above the ground, the risk of the work high above the ground is greatly reduced, and the safety of the construction work is improved.
Drawings
The accompanying drawings are included to provide a further description of the invention and are incorporated in and constitute a part of this application, with the exemplary embodiments and description of the invention being given to illustrate and not limit the invention.
FIG. 1 is a schematic structural view of a silo wall slip form construction;
FIG. 2 is a schematic view of a slipform platform and silo roof support;
FIG. 3 is a schematic view of a first descent of the slip-form platform;
FIG. 4 is a schematic view of the sliding mode platform being lowered a second time;
FIG. 5 is a schematic structural view of a truss-supported steel corbel;
fig. 6 is a structural schematic diagram of a steel corbel of a diagonal brace support.
In the figure, 1-lifting frame, 2-sleeve, 3-inner surrounding ring, 4-outer surrounding ring, 5-supporting rod, 6-safety net, 7-inner hanging fence, 8-outer hanging fence, 9-jack, 10-hanging fence plate, 11-inner and outer formworks, 12-lifting frame reinforcing steel bar, 13-silo top plate, 14-outer cantilever frame, 15-slip form platform truss, 16-reinforcing purlin, 17-reinforcing diagonal brace, 18-steel corbel, 19-embedded steel plate, 20-chain block, 21-steel wire rope sling chain, and 22-three-foot steel frame sling chain.
Detailed Description
In order that those skilled in the art will better understand the present invention, a more complete and complete description of the present invention is provided below in conjunction with the accompanying drawings and embodiments. It should be noted that the features in the embodiments and examples in the present application may be combined with each other without conflict.
The invention provides a construction method of a reinforced concrete silo top plate template, which is characterized in that after the construction of a silo wall slip form is completed, a slip form platform is lowered to a preset elevation for the first time and then is reinforced to be used as a top plate template supporting platform for construction of a silo top plate; and after the construction of the top plate of the silo is finished, lowering the slip-form platform to the ground for the second time and integrally dismantling the slip-form platform.
The slip-form platform is used as an operation platform and a supporting point for supporting the silo top plate template, the platform, the support and the top plate template are integrated by combining the structural form of the silo top plate, the problems of poor stability, high construction difficulty and high safety risk of the traditional construction method due to ultrahigh support are solved, the problems of difficult high-altitude disassembly operation and prominent potential safety hazard of the slip-form platform are solved, and the construction operation safety is improved.
Embedded steel plate for silo wall
When the silo wall is constructed, an embedded steel plate 19 is arranged in the silo wall and is used as a supporting point when the slip-form platform descends for the first time.
When the silo wall slip form reaches a preset elevation, the embedded steel plate 19 is installed in the silo wall according to the preset elevation and the horizontal position, the anchor bars on the back of the embedded steel plate 19 are firmly welded with the steel bars on the silo wall, and the front of the embedded steel plate 19 is recessed 2-5mm from the silo wall so as to avoid displacement caused by friction with the slip form plate.
As shown in fig. 2, the embedded steel plates 19 include a main embedded steel plate (determined according to load and construction requirements) as a supporting point of the slipform platform truss 15 and a sub embedded steel plate as a supporting point of the reinforcing diagonal brace 17 of the slipform platform truss.
Accessory for removing slip form equipment
As shown in fig. 1, the slipform equipment is used during the construction of silo wall slipforms, and after the silo wall slipforms are completed, as shown in fig. 2, a lifting frame 1, a support rod 5 and a slipform platform truss 15 are kept, and the lifting frame 1 and the reinforced support rod 5 are used as support points of a chain block to remove other equipment accessories of the slipforms.
First sliding form platform integral descending
As shown in fig. 3, the slipform lifting frame 1 and the reinforced support rod 5 are used as hanging points of the chain block 20, and one hanging point is arranged at each end of each truss of the slipform platform.
And a steel bracket 18 is welded at the position of the pre-buried steel plate 19. The steel corbel panel of the truss supporting point of the slip-form platform requires a steel plate with the thickness more than or equal to 16, and two stiffening rib plates are added (as shown in figure 5). The steel corbels of the bracing points are more than or equal to 12-thick steel plates, and a stiffening rib plate is added (as shown in figure 6). The joint of the steel bracket 18 and the embedded steel plate 19 is fully welded.
After each fixed lifting point and the chain block 20 are uniformly stressed, the connection between the slip form platform truss 15 and the lifting frame 1 is cut off, the chain block 20 is operated to uniformly descend the slip form platform truss 15 to a truss support steel bracket support, welding and fixing are carried out, a reinforcing inclined strut 17 is arranged, and a layer of plywood is additionally paved on the slip form platform after welding is finished. After the inspection is stable, the chain block chain is loosened slowly.
The reinforcing inclined strut 17 is obliquely arranged at the bottom of the sliding mode platform truss 16, the included angle between the reinforcing inclined strut 17 and the silo wall is 45 degrees, the sliding mode platform truss 16 is connected with the upper end of the reinforcing inclined strut 17, and the other end of the reinforcing inclined strut is connected with an inclined strut supporting steel bracket welded on the secondary embedded steel plate. A plurality of reinforcing purlins 16 are vertically arranged between the reinforcing inclined strut 17 and the slipform platform truss 16.
And the slip-form platform is used as a top plate template supporting platform for silo top plate construction, a top plate support and a template are installed, and other construction procedures of the silo top plate are carried out.
Concrete pouring and tamping for top plate of silo
Due to the fact that the rigidity of the sliding mode platform truss is poor, elastic deformation is large. In order to prevent the silo top plate from generating cracks in the initial setting stage of concrete due to the deformation of the silo top plate caused by self weight in the concrete pouring and tamping construction process, the concrete of the silo top plate is divided into two times of pouring and tamping by beam plates. And (5) performing concrete pouring for the first time to 50mm below the plate surface, and performing concrete pouring on the top plate of the silo after 24 hours. At this time, the top plate beam is initially set, the concrete, the reinforcing steel bars and the slip form platform plate act together, the rigidity is high, the load of the silo top plate can be borne, deformation is avoided, and if the early strength agent can be added into the concrete, the effect is better.
Second sliding mode platform integral descending
After the top plate construction is completed, as shown in fig. 4, the top plate template is removed and the cleaning is completed, and a tripod frame 22 is arranged at the upper part of the silo top plate 13 to be used as a hanging point of a chain block 20; fixing a chain block sling chain 21 at the end of the slipform platform truss 16 through a preformed hole on the surface of the silo top 13; and then the sliding mode platform is wholly descended to the ground and disassembled.
As shown in fig. 4, since the length of a single chain block chain (the longest length is about 20 m) cannot place the slip form platform on the ground at one time, two chain block cranes are arranged at the same hoisting point according to the height of the silo, one chain block crane is used for temporary fixing, and the other chain block crane is additionally provided with a steel wire rope, so that the slip form platform is ensured to descend stably.
The scope of the invention is not limited to the above embodiments, and various modifications and changes may be made by those skilled in the art, and any modifications, improvements and equivalents within the spirit and principle of the invention should be included in the scope of the invention.
Claims (10)
1. A construction method of a reinforced concrete silo top plate template is characterized by comprising the following steps: after the silo wall slip-form construction is finished, the slip-form platform is lowered to a preset elevation for the first time and then is reinforced to serve as a top plate formwork supporting platform for silo top plate construction; and after the construction of the silo top plate is completed, lowering the slip-form platform to the ground for the second time and integrally dismantling the slip-form platform.
2. The reinforced concrete silo top plate template construction method as claimed in claim 1, wherein: when the silo wall is constructed, an embedded steel plate is arranged in the silo wall and used as a supporting point when the slip form platform descends for the first time.
3. The reinforced concrete silo roof formwork construction method as claimed in claim 2, wherein the construction method comprises the following steps: and anchor bars are arranged on the back of the steel plate of the embedded steel plate and are welded with steel bars on the silo wall.
4. The reinforced concrete silo top plate template construction method as claimed in claim 2 or 3, wherein the construction method comprises the following steps: the front surface of the steel plate of the pre-embedded steel plate is recessed into the wall surface of the silo by 2-5 mm.
5. The reinforced concrete silo roof formwork construction method as claimed in claim 4, wherein the construction method comprises the following steps: the pre-buried steel plates comprise main pre-buried steel plates and secondary pre-buried steel plates, the main pre-buried steel plates serve as supporting points of the sliding mode platform truss, and the secondary pre-buried steel plates serve as supporting points of reinforcing inclined struts of the sliding mode platform truss.
6. The reinforced concrete silo top plate formwork construction method as claimed in claim 1 or 5, wherein the construction method comprises the following steps: and after the construction of the silo wall slip form is completed, removing the slip form equipment accessories.
7. The reinforced concrete silo roof formwork construction method of claim 6, characterized in that: when the sliding mode platform descends for the first time, the sliding mode lifting frame is used for reinforcing and then serves as a hanging point of the chain block, the steel corbel is welded at the position of the embedded steel plate, the sliding mode platform is integrally descended to the support seat surface of the steel corbel through the chain block, the truss of the sliding mode platform is welded with the steel corbel, then the top plate support and the template are installed, and silo top plate construction is conducted.
8. The reinforced concrete silo roof formwork construction method of claim 7, characterized in that: and after the truss of the slip form platform is welded with the steel corbel, additionally laying a layer of plywood on the slip form platform.
9. The reinforced concrete silo top plate formwork construction method as claimed in claim 7 or 8, wherein the construction method comprises the following steps: and (3) pouring and tamping the top plate concrete of the silo twice, pouring and tamping the concrete for the first time to a position 50mm below the plate surface, and pouring and tamping the top plate concrete of the silo after 24 hours.
10. The reinforced concrete silo roof formwork construction method of claim 9, characterized in that: when the sliding-mode platform descends for the second time, the top plate template is dismantled and cleaned, a chain block hanging point is arranged at the upper part of the top plate of the silo, and a chain block hanging chain is fixed at the end of the sliding-mode platform truss through a preformed hole on the top plate surface of the silo; and the sliding mode platform is integrally descended to the ground by using the chain block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519276.5A CN114737750A (en) | 2022-05-13 | 2022-05-13 | Construction method for reinforced concrete silo top plate template |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519276.5A CN114737750A (en) | 2022-05-13 | 2022-05-13 | Construction method for reinforced concrete silo top plate template |
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| Publication Number | Publication Date |
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| CN114737750A true CN114737750A (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210519276.5A Pending CN114737750A (en) | 2022-05-13 | 2022-05-13 | Construction method for reinforced concrete silo top plate template |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306145A (en) * | 2022-08-08 | 2022-11-08 | 深圳市建工集团股份有限公司 | Large-span high-altitude formwork support construction method based on high-altitude formwork support platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10102816A (en) * | 1996-10-02 | 1998-04-21 | Mitsubishi Heavy Ind Ltd | Package constructing method of silos |
| CN101476410A (en) * | 2009-01-13 | 2009-07-08 | 杭州萧宏建设集团有限公司 | Mounting and demounting method roof plate formwork support platform of concrete silo |
| CN103556823A (en) * | 2013-10-28 | 2014-02-05 | 山西省第二建筑工程公司 | Construction method with silo sliding formwork operating platform as top cover plate formwork supporting system |
| CN108019076A (en) * | 2017-12-28 | 2018-05-11 | 河南宏程工程建设有限责任公司 | Large-size rebar concrete silo construction method and the device for conical shell construction |
-
2022
- 2022-05-13 CN CN202210519276.5A patent/CN114737750A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10102816A (en) * | 1996-10-02 | 1998-04-21 | Mitsubishi Heavy Ind Ltd | Package constructing method of silos |
| CN101476410A (en) * | 2009-01-13 | 2009-07-08 | 杭州萧宏建设集团有限公司 | Mounting and demounting method roof plate formwork support platform of concrete silo |
| CN103556823A (en) * | 2013-10-28 | 2014-02-05 | 山西省第二建筑工程公司 | Construction method with silo sliding formwork operating platform as top cover plate formwork supporting system |
| CN108019076A (en) * | 2017-12-28 | 2018-05-11 | 河南宏程工程建设有限责任公司 | Large-size rebar concrete silo construction method and the device for conical shell construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115306145A (en) * | 2022-08-08 | 2022-11-08 | 深圳市建工集团股份有限公司 | Large-span high-altitude formwork support construction method based on high-altitude formwork support platform |
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