CN111749455A - Construction method of observation tower with inverted cone-shaped tower top - Google Patents
Construction method of observation tower with inverted cone-shaped tower top Download PDFInfo
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- CN111749455A CN111749455A CN202010685489.6A CN202010685489A CN111749455A CN 111749455 A CN111749455 A CN 111749455A CN 202010685489 A CN202010685489 A CN 202010685489A CN 111749455 A CN111749455 A CN 111749455A
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- tower
- construction
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- inverted cone
- tower top
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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
- 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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
Abstract
The invention discloses a construction method of an observation tower with an inverted cone-shaped tower top, and relates to the technical field of buildings. Compared with the prior art, the invention has the advantages of low engineering technical measure cost, small construction operation difficulty, safety, capability of reducing the engineering cost and good forming effect of the inverted cone-shaped concrete structure at the tower top.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a construction technology of a high-rise building with an inverted conical tower top.
Background
A lookout tower belongs to a high-rise building, and an inverted cone-shaped structural layer is designed on the top of the tower of some lookout towers.
The slip form construction process has the characteristics of high efficiency and rapidness in high-rise buildings, people also introduce the slip form construction process in the construction process of the tower body main body of the lookout tower, and the construction method of the prior lookout tower is that the slip form construction process is firstly adopted to complete the construction of the whole tower body main body of the lookout tower, and then the inverted cone-shaped tower top construction is carried out on the periphery of the tower body main body with the designed height. Because the diameter of the tower body positioned at the high position of the top layer is larger than that of the tower body positioned at the low position, an inverted cone-shaped tower top structure is formed. If the scaffold is erected upwards from the ground, the inverted cone-shaped tower top structure has great potential safety hazard and takes labor, time and material.
In order to solve the problems of long construction period, low construction efficiency, high equipment investment cost and the like in the traditional construction mode of building construction on the inverted cone-shaped tower top, Chinese patent document 201310185383.X discloses a net frame type formwork supporting operation platform for construction of a water tank on the inverted cone-shaped tower top, a steel pipe derrick is erected in the center of a water tower barrel, a derrick top beam is higher than the top of the water tank of the water tower, an inverted cone-shaped steel net frame is installed around a water tank ring joist, and a main truss overhanging end in the net frame is connected with an outer ring beam of the derrick top beam in a pulling mode through a steel wire rope to form a stable and safe high-altitude cast-in-place water tank formwork. The construction method needs to spend a large amount of manpower, material resources and time to set up the steel pipe derrick, the ring joist, install the inverted cone-shaped steel net rack and lay the bamboo springboard on the supporting beam to form complex safety protection facilities such as a water tank concrete pouring construction platform and the like, and the defects of large workload of steel structure high-altitude operation, large one-time investment of turnover materials, high engineering technical measure cost and the like exist.
Disclosure of Invention
Aiming at the defects, the invention provides a construction method of the lookout tower with the inverted cone-shaped tower top, which is convenient, time-saving, labor-saving, material-saving and safe.
After the construction of the tower body main body is completed, the movable hanging frame is arranged downwards from the radiation beam in the tower body main body slip form system, and the layered die-turning construction is carried out on the inverted conical tower top from bottom to top by moving the movable hanging frame upwards and outwards layer by layer.
Compared with the prior art, the invention has the advantages of low engineering technical measure cost, small construction operation difficulty, safety, capability of reducing the engineering cost and good forming effect of the inverted cone-shaped concrete structure at the tower top.
Furthermore, in the concrete pouring process in the construction of the tower body main body, the preformed hole for the inverted cone-shaped tower top vertical mold is placed in the inverted cone-shaped tower top interval; in the process of erecting the mould on the inverted cone-shaped top of the tower, the inner and outer templates are fixed by adopting the split bolts, and the split bolts and the connecting bolts penetrating through the reserved holes are fixed in a split manner. The construction method fully utilizes the existing resources to solve the technical problem of engineering, and is beneficial to saving engineering time, labor and financial resources.
For convenience of construction, the height of a standing template for each layer of turnover formwork construction of the inverted conical tower top is 750 mm.
Drawings
FIG. 1 is a schematic diagram of reinforcement of internal and external templates of a watchtower.
FIG. 2 is an installation diagram illustrating the construction measures of the tower with the tower tube expanded outward.
Fig. 3 is a schematic view of the fixed connection of the body main body sliding system before idle sliding.
Detailed Description
Firstly, engineering target:
the main body of the gazebo tower body is a circular silo with the total height of 93m, and an outward-expanding gazebo is surrounded on the periphery of the main body of the circular silo from 88 m to 93 m.
The diameter of this outer gazebo of opening gradually increases and forms the urceolus of falling the vertebra from bottom to top to there is the top layer platform at the top of the urceolus of falling the vertebra, and the periphery of top layer platform links to each other with the upper reason of the urceolus of falling the vertebra, and the interior week of top layer platform links to each other with body of the tower main part upper end, and the height of top layer platform is in 93m department.
Secondly, construction steps:
as shown in fig. 1, 2 and 3:
1. and the tower body main body of the 88 m circular silo lookout tower from the ground is constructed by adopting a normal slip form.
2. And constructing the tower body main body of 88 m to 92.8 m.
And (3) continuously adopting a normal slip form construction mode to construct a tower body main body of 88 m to 92.8m, and in the concrete pouring process of the tower body main body 1, respectively placing a plurality of phi 50mm PVC pipes 2 along the height and in the circumferential direction at equal intervals in the interval of 88 m to 92.8m, and forming reserved holes for inner and outer templates 4 and 5 for fixing the inverted cone outer cylinder 3 on the tower body main body 1 by using counter-pulling through-wall bolts 6.
When the slip form system 8 of the tower body main body 1 slides to the height of the tower platform of 92.8m, the slip form construction of the tower body main body is suspended, and the inverted cone outer cylinder 3 is constructed.
3. And (5) constructing an inverted cone outer cylinder of 88 m to 92.8 m.
And after the concrete strength of the tower body from 88 m to 92.8m reaches more than 70%, roughening the outer surface of the concrete at the reserved joint bar part of the tower body main body at the 88 m position, and then performing segmented turnover construction of the inverted cone outer cylinder.
The scaffold for the construction of the inverted cone outer cylinder 3 is an annular construction platform formed by 32 groups of movable hangers 9, and each group of movable hangers 9 is distributed on the outer side of the tower body main body 1.
Each group of movable hangers 9 is provided with two vertical rods and a cross rod, the upper end of each vertical rod is respectively connected with a radiation beam in a sliding mode system of the tower body main body positioned at the outer side of the tower body main body in a radially slidable mode or a relatively fixed mode, the lower end of each vertical rod extends downwards to the position about 87 m of the tower body main body, and the two ends of each cross rod are inserted into plug pin holes at the tail ends of the two vertical rods and are fixed by U-shaped hooks.
An annular construction platform is laid between the cross rods at the lowest end of each group of movable hangers, and constructors and materials can stand to operate or lay the materials.
Firstly, steel building and binding of the lowest layer of the inverted cone-shaped outer cylinder and supporting of the inner and outer templates are carried out, and the supporting height of each section of the inner and outer templates 4 and 5 is 750mm till 92.8 m. Each section of the inner and outer templates 4 and 5 is fixed by phi 14 counter-pulling bolts 7 and is firmly fixed with counter-pulling wall-penetrating bolts 6 penetrating in the PVC pipe 2 in the tower body main body 1, the outer template is bent into an annular hoop by phi 28 reinforcing steel bars to be used as a transverse purlin, and the formed whole is shown in figure 1.
After each section of poured concrete is finally set, removing the annular construction platform laid between the cross bars of each group of movable hangers, moving each group of movable hangers outwards along the radiation beams in the slip form system of the tower body main body, simultaneously connecting the cross bars on each group of movable hangers with the vertical rods again upwards, re-fixing each group of movable hangers and the radiation beams, then laying the annular construction platform between the cross bars of each group of movable hangers again, and continuing the construction of the inverted cone outer cylinder on the new platform.
And (5) dismantling the movable hanging rack until the inverted cone outer barrel is constructed to 92.8 m.
4. And (5) constructing a top platform.
And (3) performing idle sliding on the sliding mode system 8 of the tower body main body, wherein the idle sliding height is 400mm, sliding up to 93.2m, stopping sliding up, building a top platform template of 92.8-93 m, binding reinforcing steel bars, and pouring top platform concrete.
The support rods 10 of the slip form system 8 of the tower body are reinforced before the idle slip, see in detail fig. 3: the reinforcing steel bars 11 with the diameter larger than 25mm are adopted to form a ring connection before the supporting rods 10 of each group of the sliding lifting system 8, and the reinforcing steel bar scissor supports 12 are welded between the adjacent supporting rods 10 so as to increase the stability of the supporting rods 10. And after each idle sliding is finished, the annular connection formed by the steel bar scissor supports 12 and the steel bars 11 is removed.
Claims (3)
1. The construction method of the observation tower with the inverted cone-shaped tower top is characterized by comprising the following steps of: after the construction of the tower body main body is completed, a movable hanging frame is arranged downwards from a radiation beam in the tower body main body slip form system, and the layered turnover construction is carried out on the inverted conical tower top from bottom to top by moving the movable hanging frame upwards and outwards layer by layer.
2. The construction method of the watchtower with the inverted-cone-shaped tower top according to claim 1, characterized by comprising the following steps: in the concrete pouring process in the construction of the main body of the tower body, a preformed hole for the inverted cone-shaped tower top vertical mold is placed in the inverted cone-shaped tower top interval; in the process of erecting the mould on the inverted cone-shaped top of the tower, the inner and outer templates are fixed by adopting the split bolts, and the split bolts and the connecting bolts penetrating through the reserved holes are fixed in a split manner.
3. The construction method of a lookout tower with an inverted conical tower top according to claim 1 or 2, characterized in that: the height of a standing template for each layer of turnover formwork construction of the inverted conical tower top is 750 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685489.6A CN111749455A (en) | 2020-07-16 | 2020-07-16 | Construction method of observation tower with inverted cone-shaped tower top |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685489.6A CN111749455A (en) | 2020-07-16 | 2020-07-16 | Construction method of observation tower with inverted cone-shaped tower top |
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| Publication Number | Publication Date |
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| CN111749455A true CN111749455A (en) | 2020-10-09 |
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| CN202010685489.6A Pending CN111749455A (en) | 2020-07-16 | 2020-07-16 | Construction method of observation tower with inverted cone-shaped tower top |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748799A (en) * | 2009-12-30 | 2010-06-23 | 河南四建股份有限公司 | Hydraulic lifting rollover construction method of chimney reinforced concrete shaft wall |
| CN102162224A (en) * | 2011-02-23 | 2011-08-24 | 徐光华 | Top reaching one-time casting process of concrete check gate seam pier |
| CN203924872U (en) * | 2014-06-27 | 2014-11-05 | 中国水利水电第十三工程局有限公司 | The cast-in-place bracing or strutting arrangement of conical shell formula water tower |
| CN105780661A (en) * | 2016-03-31 | 2016-07-20 | 中交公局第六工程有限公司 | High pier sliding and turning integrated construction formwork system |
| CN110656802A (en) * | 2019-08-29 | 2020-01-07 | 中国一冶集团有限公司 | Silo slipform removes gallows device |
| CN110878522A (en) * | 2019-11-26 | 2020-03-13 | 湖北省路桥集团有限公司 | Main tower lower cross beam construction system and construction method |
-
2020
- 2020-07-16 CN CN202010685489.6A patent/CN111749455A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748799A (en) * | 2009-12-30 | 2010-06-23 | 河南四建股份有限公司 | Hydraulic lifting rollover construction method of chimney reinforced concrete shaft wall |
| CN102162224A (en) * | 2011-02-23 | 2011-08-24 | 徐光华 | Top reaching one-time casting process of concrete check gate seam pier |
| CN203924872U (en) * | 2014-06-27 | 2014-11-05 | 中国水利水电第十三工程局有限公司 | The cast-in-place bracing or strutting arrangement of conical shell formula water tower |
| CN105780661A (en) * | 2016-03-31 | 2016-07-20 | 中交公局第六工程有限公司 | High pier sliding and turning integrated construction formwork system |
| CN110656802A (en) * | 2019-08-29 | 2020-01-07 | 中国一冶集团有限公司 | Silo slipform removes gallows device |
| CN110878522A (en) * | 2019-11-26 | 2020-03-13 | 湖北省路桥集团有限公司 | Main tower lower cross beam construction system and construction method |
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Application publication date: 20201009 |
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