CN113062594A - Integral formwork lowering method for top of reinforced concrete silo - Google Patents
Integral formwork lowering method for top of reinforced concrete silo Download PDFInfo
- Publication number
- CN113062594A CN113062594A CN202110334883.XA CN202110334883A CN113062594A CN 113062594 A CN113062594 A CN 113062594A CN 202110334883 A CN202110334883 A CN 202110334883A CN 113062594 A CN113062594 A CN 113062594A
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- Prior art keywords
- double
- steel pipe
- bin
- layer steel
- pipe truss
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 21
- 238000009415 formwork Methods 0.000 title claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 63
- 239000010959 steel Substances 0.000 claims abstract description 63
- 238000010276 construction Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
Classifications
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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
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
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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
-
- 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
- E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices
- E04G19/003—Arrangements for stabilising the forms or for moving the forms from one place to another
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/22—Containers for fluent solids, e.g. silos, bunkers; Supports therefor
- E04H7/24—Constructions, with or without perforated walls, depending on the use of specified materials
- E04H7/26—Constructions, with or without perforated walls, depending on the use of specified materials mainly of concrete, e.g. reinforced concrete or other stone-like materials
Abstract
The invention discloses a method for integrally lowering a mold of a reinforced concrete silo top, which comprises the following steps of finishing pouring of a silo top structure, after maintenance reaches the mold removal strength, firstly arranging a cushion block on a silo top plate, detaching a suspender connected with a Bailey frame, and temporarily fixing the suspender by using the cushion block; then, sequentially removing the inner template and the scaffold of the bin, the round steel lifting rib, the bailey frame at the top of the bin and the inner and outer operating platforms of the ring beam at the top of the bin, and only keeping the double-layer steel pipe truss; and finally, lowering the whole double-layer steel pipe truss to the bottom of the bin at a constant speed, and disassembling the double-layer steel pipe truss. And the double-layer steel pipe truss in the bin is integrally lowered to the bottom in the bin by an electric hoist and then manually removed. By combining the two methods, the safety and the construction efficiency can be improved.
Description
Technical Field
The invention belongs to the technical field of mold removal of silo tops in building construction, and particularly relates to an integral mold lowering method for a reinforced concrete silo top.
Background
The reinforced concrete silo roof structure mostly adopts a Bailey truss reverse-hanging steel pipe truss formwork supporting technology, and the construction difficulty and the danger are higher in the formwork dismantling stage than in the installation stage.
In the prior art, the traditional method for dismantling the double-layer steel pipe truss by the reinforced concrete silo top structure in the upper and lower layers is that the steel pipe truss is transported to the ground after the silo top is dismantled, so that the high-altitude operation is more, the construction difficulty is high, and the risk is high.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method for integrally lowering the top of the reinforced concrete silo is provided, and the problem that in the prior art, a silo top template is difficult to operate at high altitude and has high risk coefficient in the process of dismantling the silo top template is solved.
The invention adopts the following technical scheme for solving the technical problems:
a method for lowering the formwork of the whole silo top of a reinforced concrete silo comprises the steps that the structure of the silo top is poured, after maintenance is carried out to reach the formwork removal strength, firstly, a cushion block is arranged on a silo top plate, a hanging rod connected with a Bailey frame is dismantled, and the cushion block is applied for temporary fixing; then, sequentially removing the inner template and the scaffold of the bin, the round steel lifting rib, the bailey frame at the top of the bin and the inner and outer operating platforms of the ring beam at the top of the bin, and only keeping the double-layer steel pipe truss; and finally, lowering the whole double-layer steel pipe truss to the bottom of the bin at a constant speed, and disassembling the double-layer steel pipe truss.
And the bailey frames on the top of the bin are dismantled in a tower crane hoisting mode.
After the bailey truss on the top of the silo is dismantled, double-layer steel pipe truss hanging points are arranged above the main beam on the top of the silo, the hoisting device is uniformly installed and connected with the double-layer steel pipe truss hanging points, the double-layer steel pipe truss is hoisted, the double-layer steel pipe truss is uniformly stressed, connecting points of the hoisting rod and the top of the silo are dismantled, and the hoisting device is started to descend to the bottom of the silo at a constant speed.
The hoisting device is an electric hoist.
The electric hoists are uniformly arranged, the specification is adjusted according to the weight of the double-layer steel pipe truss, and the total rated lifting capacity is 2 times larger than the weight of the double-layer steel pipe truss.
The electric block is arranged on the temporary support above the bin top plate.
The suspender connected with the bailey truss comprises a transverse suspender and a vertical suspender, wherein the transverse suspender is hoisted below the bailey truss, the vertical suspender is connected with the bailey truss and the double-layer steel pipe truss, the transverse suspender and the connecting point of the vertical suspender and the bailey truss are dismantled one by one, the transverse suspender and the vertical suspender are connected together by adopting a connecting piece and are placed on the cushion block.
Before the double-layer steel pipe truss is integrally lowered, all connecting pieces connected between the transverse suspender and the vertical suspender are firstly removed, and then the double-layer steel pipe truss is integrally lowered to the bottom of the warehouse at a constant speed.
The connecting piece is a right-angle fastener.
And the inner and outer operating platforms of the bin inner template, the scaffold, the round steel lifting rib, the bin top bailey frame and the bin top ring beam are dismantled in a mode of matching tower cranes with manpower.
Compared with the prior art, the invention has the following beneficial effects:
1. the internal and external operating platforms of the bin template, the scaffold, the round steel hanging rib, the bin top bailey frame and the bin top ring beam can be manually dismantled through matching of a tower crane; and the double-layer steel pipe truss in the bin is integrally lowered to the bottom in the bin by an electric hoist and then manually removed. By combining the two methods, the safety and the construction efficiency can be improved.
2. The method changes the traditional method for dismantling the double-layer steel pipe truss by dividing the upper layer into the lower layer and the upper layer, reduces the workload of high-altitude operation, directly uses the large-tonnage electric hoist, integrally lowers the mould, reduces the workload of high-altitude operation, reduces the construction safety risk, and is more convenient and efficient than the prior art.
3. Has wide market application prospect.
Drawings
FIG. 1 is a schematic structural view of the curing to the form removal strength after the silo construction is completed.
FIG. 2 is a schematic structural view of the present invention using a batten cushion block to fix the hanger rod above the roof of the silo.
Fig. 3 is an enlarged view of a portion 1-1 of fig. 2.
FIG. 4 is a schematic structural view of the present invention with the upper form removed.
Fig. 5 is a schematic diagram of a double-layer steel pipe truss hoisting point arrangement structure.
Fig. 6 is a schematic view illustrating the lowering of the double-layer steel pipe truss according to the present invention.
Wherein, the labels in the figure are: 1-bailey frames; 2-double-layer steel pipe truss; 3-a suspender; 4-a batten cushion block; 5-a transverse boom; 6-electric hoist; 7-vertical boom.
Detailed Description
The structure and operation of the present invention will be further described with reference to the accompanying drawings.
A method for lowering the formwork of the whole silo top of a reinforced concrete silo comprises the steps that the structure of the silo top is poured, after maintenance is carried out to reach the formwork removal strength, firstly, a cushion block is arranged on a silo top plate, a hanging rod connected with a Bailey frame is dismantled, and the cushion block is applied for temporary fixing; then, sequentially removing the inner template and the scaffold of the bin, the round steel lifting rib, the bailey frame at the top of the bin and the inner and outer operating platforms of the ring beam at the top of the bin, and only keeping the double-layer steel pipe truss; and finally, lowering the whole double-layer steel pipe truss to the bottom of the bin at a constant speed, and disassembling the double-layer steel pipe truss.
In a specific embodiment, as shown in figures 1 to 6,
an integral formwork lowering method for the top of a reinforced concrete silo comprises the following steps:
firstly, pouring a silo top structure, and maintaining to achieve the form removal strength;
secondly, placing a plurality of cushion blocks on a top plate of the bin, and removing the cushion blocks connected with the bailey frames one by one
The transverse suspension rod and the vertical suspension rod are temporarily fixed by adopting cushion blocks;
thirdly, adopting a tower crane to cooperate with manpower, sequentially removing a template and a scaffold in the silo, round steel hanging ribs, a silo top bailey frame and an operation platform inside and outside the silo top ring beam, and only keeping a double-layer steel pipe truss;
fourthly, 8 5-ton electric hoists are adopted to hoist the double-layer steel pipe truss, so that the steel wire ropes are evenly stressed, and the steel wire ropes are hoisted
The connecting point of the suspender and the top of the bin is removed;
fifthly, adopting 8 electric hoists with 5 tons to slowly descend the whole double-layer steel pipe truss to the bottom of the warehouse;
and sixthly, disassembling the double-layer steel pipe truss.
And the bailey frames on the top of the bin are dismantled in a tower crane hoisting mode.
After the bailey truss on the top of the silo is dismantled, double-layer steel pipe truss hanging points are arranged above the main beam on the top of the silo, the hoisting device is uniformly installed and connected with the double-layer steel pipe truss hanging points, the double-layer steel pipe truss is hoisted, the double-layer steel pipe truss is uniformly stressed, connecting points of the hoisting rod and the top of the silo are dismantled, and the hoisting device is started to descend to the bottom of the silo at a constant speed.
The electric hoists are uniformly arranged, the specification is adjusted according to the weight of the double-layer steel pipe truss, and the total rated lifting capacity is 2 times larger than the weight of the double-layer steel pipe truss.
The electric block 6 is arranged on a temporary support above the top plate of the bin.
In the second step, the suspender 3 connected with the bailey truss 1 comprises a transverse suspender 5 and a vertical suspender 7, wherein the transverse suspender 5 is hoisted below the bailey truss 1, the vertical suspender 7 is connected with the bailey truss 1 and the double-layer steel pipe truss 2, the connecting points of the transverse suspender 5 and the vertical suspender 7 with the bailey truss 1 are dismantled one by one, and the transverse suspender 5 and the vertical suspender 7 are connected together by adopting a connecting piece and are laid on a cushion block.
Before the double-layer steel pipe truss is integrally lowered, all connecting pieces connected between the transverse suspender and the vertical suspender are firstly removed, and then the double-layer steel pipe truss is integrally lowered to the bottom of the warehouse at a constant speed.
The connecting piece is a right-angle fastener.
And the inner and outer operating platforms of the bin inner template, the scaffold, the round steel lifting rib, the bin top bailey frame and the bin top ring beam are dismantled in a mode of matching tower cranes with manpower.
The spacer of this embodiment uses 40 x 90 square spacer blocks 4.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described herein in detail. Such variations do not affect the essence of the present invention and are not described herein.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention, unless the content of the technical solution of the present invention is departed from.
Claims (10)
1. The integral formwork lowering method for the top of reinforced concrete silo is characterized by comprising the following steps: after the silo roof structure is poured and maintained to reach the demolding strength, firstly, arranging a cushion block on a silo roof, detaching a suspender connected with the bailey frame, and temporarily fixing by using the cushion block; then, sequentially removing the inner template and the scaffold of the bin, the round steel lifting rib, the bailey frame at the top of the bin and the inner and outer operating platforms of the ring beam at the top of the bin, and only keeping the double-layer steel pipe truss; and finally, lowering the whole double-layer steel pipe truss to the bottom of the bin at a constant speed, and disassembling the double-layer steel pipe truss.
2. The reinforced concrete silo roof integral formwork lowering method as recited in claim 1, wherein: and the bailey frames on the top of the bin are dismantled in a tower crane hoisting mode.
3. The reinforced concrete silo roof integral formwork lowering method as recited in claim 1, wherein: after the bailey truss on the top of the silo is dismantled, double-layer steel pipe truss hanging points are arranged above the main beam on the top of the silo, the hoisting device is uniformly installed and connected with the double-layer steel pipe truss hanging points, the double-layer steel pipe truss is hoisted, the double-layer steel pipe truss is uniformly stressed, connecting points of the hoisting rod and the top of the silo are dismantled, and the hoisting device is started to descend to the bottom of the silo at a constant speed.
4. The reinforced concrete silo roof integral formwork lowering method as recited in claim 3, wherein: the hoisting device is an electric hoist.
5. The reinforced concrete silo roof integral formwork lowering method as recited in claim 4, wherein: the electric hoists are uniformly arranged, the specification is adjusted according to the weight of the double-layer steel pipe truss, and the total rated lifting capacity is 2 times larger than the weight of the double-layer steel pipe truss.
6. The reinforced concrete silo roof integral formwork lowering method as recited in claim 3, wherein: the electric block is arranged on the temporary support above the bin top plate.
7. The reinforced concrete silo roof integral formwork lowering method as recited in claim 1, wherein: the suspender connected with the bailey truss comprises a transverse suspender and a vertical suspender, wherein the transverse suspender is hoisted below the bailey truss, the vertical suspender is connected with the bailey truss and the double-layer steel pipe truss, the transverse suspender and the connecting point of the vertical suspender and the bailey truss are dismantled one by one, the transverse suspender and the vertical suspender are connected together by adopting a connecting piece and are placed on the cushion block.
8. The reinforced concrete silo roof integral formwork lowering method as recited in claim 7, wherein: before the double-layer steel pipe truss is integrally lowered, all connecting pieces connected between the transverse suspender and the vertical suspender are firstly removed, and then the double-layer steel pipe truss is integrally lowered to the bottom of the warehouse at a constant speed.
9. The reinforced concrete silo roof integral formwork lowering method as claimed in claim 7 or 8, wherein the reinforced concrete silo roof integral formwork lowering method comprises the following steps: the connecting piece is a right-angle fastener.
10. The reinforced concrete silo roof integral formwork lowering method as recited in claim 1, wherein: and the inner and outer operating platforms of the bin inner template, the scaffold, the round steel lifting rib, the bin top bailey frame and the bin top ring beam are dismantled in a mode of matching tower cranes with manpower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334883.XA CN113062594A (en) | 2021-03-29 | 2021-03-29 | Integral formwork lowering method for top of reinforced concrete silo |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110334883.XA CN113062594A (en) | 2021-03-29 | 2021-03-29 | Integral formwork lowering method for top of reinforced concrete silo |
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| Publication Number | Publication Date |
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| CN113062594A true CN113062594A (en) | 2021-07-02 |
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| CN202110334883.XA Pending CN113062594A (en) | 2021-03-29 | 2021-03-29 | Integral formwork lowering method for top of reinforced concrete silo |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914620A (en) * | 2021-11-11 | 2022-01-11 | 防城港中一重工有限公司 | Method for integrally landing silo sliding-form platform |
-
2021
- 2021-03-29 CN CN202110334883.XA patent/CN113062594A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113914620A (en) * | 2021-11-11 | 2022-01-11 | 防城港中一重工有限公司 | Method for integrally landing silo sliding-form platform |
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