CN103061568B - Tapered hanging bracket high-position in-situ casting construction method of water tank of reverse taper shell heat-preservation water tower - Google Patents
Tapered hanging bracket high-position in-situ casting construction method of water tank of reverse taper shell heat-preservation water tower Download PDFInfo
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- CN103061568B CN103061568B CN201210590846.6A CN201210590846A CN103061568B CN 103061568 B CN103061568 B CN 103061568B CN 201210590846 A CN201210590846 A CN 201210590846A CN 103061568 B CN103061568 B CN 103061568B
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Abstract
The invention relates to a construction method of a water tank of a water tower, specifically relates to a tapered hanging bracket high-position in-situ casting construction method of a water tank of a reverse taper shell heat-preservation water tower and aims at solving problems that by means of existing prefabricating lifting methods of water tanks of reverse taper shell heat-preservation water towers, construction periods are prolonged during construction, high-altitude in-situ constructing and formwork structures are complicated, and material consumption is high. The tapered hanging bracket high-position in-situ casting construction method includes steps of assembling of a water tank hanging bracket and an operation platform; installation of a lower taper shell template of the water tank; installation of steel bars; pouring of concrete; and removing of the template. Compared with existing construction methods, the tapered hanging bracket high-position in-situ casting construction method has the advantages that by means of the method of operation frame high-altitude installation and formwork casting, material wastage is reduced, operation space is saved, complicated operation of building a construction platform on the ground is avoided, and construction efficiencies are greatly improved.
Description
Technical field
The present invention relates to a kind of construction method of water tower water tank, be specially a kind of type Thermal Insulation Water Tower water tank and adopt the high-order cast-in-situ construction method of taper suspension.
Background technology
The features such as usually adopt the method for prefabricated lifting relative to current type Thermal Insulation Water Tower water tank, water tank adopts high-order cast-in-place construction to have easy construction, and technique is advanced, safe and reliable.Traditional water tank adopts the method for prefabricated lifting usually, this method construction period very long (water tank intensity could promote after reaching 100%); Water tank promotes the impact comparatively large (stopping promoting when wind-force is greater than 5 grades) by wind load, can not ensure continuance lifting water tank, virtually extend the construction period.The recoil that prefabricated water tank produces due to hydraulic system oil return in lifting process easily makes water tank produce small crack, and water tank antiseepage (leakage) requires more difficult up to standard.A class technology is also there is in prior art, it is exactly aerial cast in place technique, " low temperature Building technology " 198901, " inverted cone water tower water tank high-altitude cast-in-place construction and insulation " describe in a literary composition, the method of high-altitude formwork is utilized directly to build water tower aloft, the method take die carrier technology more complicated, and directly to set up from ground, waste material and man-hour.
Summary of the invention
The present invention is in order to solve the defect that extends the construction period when type Thermal Insulation Water Tower water tank adopts the method for prefabricated lifting to construct at present and high-altitude is cast-in-place builds formwork erecting structure complexity, the problems such as consumptive material is high, provide a kind of type Thermal Insulation Water Tower water tank to adopt the high-order cast-in-situ construction method of taper suspension.
Construction method of the present invention is realized by following technical scheme: a kind of type Thermal Insulation Water Tower water tank adopts the high-order cast-in-situ construction method of taper suspension, step is: (1) water tank suspension and operating platform assembling, (2) conical shell model sheetinstallat under water tank, (3) reinforcement installation, (4) concreting, (5) form removable;
(1), water tank suspension and operating platform assembling
After water tower branch barrel has been constructed, before building water tank ring flat-plate, steel plate is uniformly distributed and has been embedded in outside ring flat-plate, the uniform embedded bar in ring flat-plate top; After ring flat-plate concrete placings is complete, removes ring flat-plate external mold, with embedded bar, steel ring is arranged on ring flat-plate, and firm welding; Ring flat-plate bottom reinforcing bar welds formation annulus with pre-embedded steel slab, then steel ring is carried out supporting with annulus angle steel and weld firm; Hanger hung on steel ring and is welded and fixed, then suspension being connected with hanger; Be connected as support bar with longitudinal reinforcement between suspension with suspension, suspension outward outstanding end drag-line is connected with derrick radial direction, suspension 6 is provided with and utilizes suspension to make radial keel, add hoop girt and skewed horizontal load bar, form the construction operation platform of a taper, utilize this operating platform to assemble water tank bed die.
(2), lower conical shell model sheetinstallat
Water tank template is trapezoidal steel form, according to outside dimension and radian in lower conical shell, and the integral mold plate of a splicing composition back taper mutually.Every block template is provided with lateral stiffening angle steel, and radial keel are arranged in radioactive ray; Outside template by reinforcing bar makeup ring to stirrup component, and with wire rope drag-line and derrick radial direction be connected.
The vertical load (member dead weight) of water tank bed die passes to a cylinder by the radial keel of bed die.Horizontal Tension (working load) is then balanced each other certainly by a series of hoop component.Under the condition of motive power, bed die still has the ability keeping monolithic stability.
(3), reinforcement installation
After bed die has been assembled, carry out warming plate installation and warming plate finished product protection, then carry out bar connecting, reinforcing bar adopts the mode of overlap joint welding to connect, and weld length must meet code requirement.
(4) concreting
Water tank lower casing uses C30 waterproof concrete, and seepage-resistant grade is p6, and its maximum water/binder ratio is no more than 0.6, and generally to be less than 0.52, slump is that 3-5cm is advisable, (constuction joint of water tank lower casing and stack shell installed expansion sealing strip before concreting).For ensureing the water proofing property of water tank, concrete should symmetry be built continuously, does not stay constuction joint, strictly controls slump, in order to avoid concrete flows pendant in casting process form pitted skin dew muscle.Building for every layer is highly 30cm-50cm.When building water tank concrete, utilize the operating platform of shell body slip-form, as concrete storage platform, then with chute concrete delivered to and respectively build a little.
Concrete can not adopt and manually vibrate, and poker vibrator must be adopted to vibrate.Vibrating should be closely knit, must not leak to shake, owe to shake.Strict control construction quality.
(5) form removable
During 5.1 water tank lower casing form removable, first the colligation of steel form piecemeal is fixed on middle ring beam railing, then the hoop stirrup of Ф 25 reinforcement welding is removed, remove the connecting bolt between fixing adjacent steel form again, steel form piecemeal is transported to hanging basket place, be transported to ground by derrick, the equipment that is carried to after cleaning concrete residue stacks some keeping.
Compared with existing construction technology, present invention employs at high-altitude fitting operation frame and the formwork way of building, decrease spillage of material, save operating space, avoid ground and take operation platform troublesome operation, efficiency of construction improves greatly.
Accompanying drawing explanation
Fig. 1 is water tank surface structure schematic diagram of the present invention,
Fig. 2 is water tank side structure schematic diagram of the present invention,
Fig. 3 is water tank taper suspension operation platform structure schematic diagram of the present invention
Fig. 4 is hanger tie point drawing.
In figure: 1-enters well, 3-water tank concrete, 4-hanger, 5-safety net, 6-suspension, 7-bamboo frame plate, 8-water tank template, 9-derrick, 10-reinforcing bar, 11-concrete placings operation platform, 12-wire rope drag-line, 13-ring flat-plate, 14-reinforcing bar, 16-steel ring, 17-angle steel, 18-steel plate, 19-drag-line at water tower branch barrel, 2-water tank.
Detailed description of the invention
As schematically shown in Figure 1, 2, for water tank of the present invention (water tank) structural representation, as shown in Figure 3,4 views, type Thermal Insulation Water Tower water tank adopts the high-order cast-in-situ construction method of taper suspension, step is: (1) water tank suspension and operating platform assembling, conical shell model sheetinstallat under (2) water tank, (3) reinforcement installation, (4) concreting, (5) form removable;
Concrete steps are as follows:
1, water tank suspension and operating platform assembling
1.1 after water tower branch barrel 1 has been constructed, by steel plate 18(specification 32 pieces of 150*150*6 before building water tank ring flat-plate) be uniformly distributed and be embedded in outside ring flat-plate 13,30cm, ring flat-plate top uniform embedded bar 14(specification 32 φ 14 bottom ring flat-plate).
1.2 after ring flat-plate concrete placings is complete, removes ring flat-plate external mold, reinforcing bar 14(specification 32 φ 14 with pre-buried) by steel ring 16(L80*8) sling and be arranged on ring flat-plate, and firm welding.The ring flat-plate 13 bottom reinforcing bar of a φ 25 welds formation annulus with pre-buried steel plate 18, then by steel ring 16 and annulus angle steel 17(32 root L50*5) carry out supporting and weld firm.
1.3 32 Pin hangers 4 (L50 × 5) hang over (steel ring is evenly reserved with 32 circular holes) on steel ring 16, and are welded and fixed.Then 32 Pin suspensions 6 (L50 × 5) are connected with hanger 4.Be connected as support bar with the reinforcing bar of φ 20 between suspension 6 with suspension 4, the outer outstanding end drag-line 19 of suspension 6 is connected with derrick 9 radial direction, suspension 6 is provided with bamboo frame plate 7, suspension 6 is utilized to make radial keel, with 8 road φ 20 hoop girts and φ 20 skewed horizontal load bar, and bamboo frame plate 7, form the construction operation platform of a taper, utilize this operating platform to assemble water tank bed die.
2, lower conical shell model sheetinstallat
2.1 water tank templates 8 are the trapezoidal steel form of sizing, according to outside dimension and radian in lower conical shell, mutually splice the integral mold plate of a composition back taper side by side.
Water tank template described in 2.2 is made up of 275 pieces of trapezoidal punching blocks of sizing.Every block template has 4 L40 × 4 lateral stiffening angle steel, and radial keel adopt L40 × 4 angle steel, and arrange in radioactive ray, maximum spacing is 700mm.
Outside 2.3 water tank templates by 10 roads (2 road Ф 20,8 road Ф 25) reinforcing bar 10 makeup ring to stirrup, and with 2 roads (per pass 6 Ф 12) wire rope drag-line 12 and derrick 9 radial direction be connected.
The vertical load (member dead weight) of 2.4 water tank bed dies passes to a cylinder by the radial keel of bed die.Horizontal Tension (working load) is then balanced each other certainly by a series of hoop component.Under the condition of motive power, bed die still has the ability keeping monolithic stability.
3, reinforcement installation
After bed die has been assembled, carry out warming plate installation and warming plate finished product protection, then carry out water tower bar connecting, reinforcing bar adopts the mode of overlap joint welding to connect, and weld length must meet code requirement.
4, concreting water tank concrete 3
Under water tank, shell water tank concrete 3 uses C30 waterproof concrete, seepage-resistant grade is p6, its maximum water/binder ratio no more than 0.6, generally to be less than 0.52, slump is that 3-5cm is advisable, (constuction joint of water tank lower casing and stack shell installed expansion sealing strip before concreting).For ensureing the water proofing property of water tank, concrete should symmetry be built continuously, does not stay constuction joint, strictly controls slump, in order to avoid concrete flows pendant in casting process form pitted skin dew muscle.Building for every layer is highly 30cm-50cm.When building water tank concrete, utilize the operating platform of shell body slip-form, as concrete storage platform, then with chute concrete delivered to and respectively build a little.
Concrete can not adopt and manually vibrate, and poker vibrator must be adopted to vibrate.Vibrating should be closely knit, must not leak to shake, owe to shake.Strict control construction quality.
5, form removable
During 5.1 water tank lower casing form removable, first the colligation of steel form piecemeal is fixed on middle ring beam railing, then the hoop stirrup of Ф 25 reinforcement welding is removed, remove the connecting bolt between fixing adjacent steel form again, steel form piecemeal is transported to hanging basket place, be transported to ground by derrick, the equipment that is carried to after cleaning concrete residue stacks some keeping.
During 5.2 form removable, forbid to use sledgehammer, operating platform cope match-plate pattern will be transported to ground stacking in time, and platform cope match-plate pattern must not stack more than three layers.Rest in form removal such as midway, it is firm the template of loosening, unsettled, crane barge or support should to be carried out temporary support.Need once remove movable part.
In the present embodiment, the selection of each data above-mentioned can ensure that the operating platform security performance that this construction obtains reaches optimum state, ensures safe construction and construction quality.
Claims (3)
1. a type Thermal Insulation Water Tower water tank adopts the high-order cast-in-situ construction method of taper suspension, it is characterized in that step is: (1) water tank suspension and operating platform assembling, conical shell model sheetinstallat under (2) water tank, (3) reinforcement installation, (4) concreting, (5) form removable;
(1), water tank suspension and operating platform assembling
After water tower branch barrel (1) has been constructed, be embedded in ring flat-plate (13) outside, the uniform embedded bar in ring flat-plate (13) top (14) building front to be uniformly distributed by steel plate (18) of water tank ring flat-plate (13); After ring flat-plate concrete placings is complete, removes ring flat-plate external mold, with embedded bar, steel ring (16) is arranged on ring flat-plate (13), and firm welding; Ring flat-plate bottom reinforcing bar welds formation annulus with pre-embedded steel slab (18), then steel ring (16) is carried out supporting with annulus angle steel (17) and weld firm; Hanger (4) is hung over steel ring (16) go up and be welded and fixed, then suspension (6) is connected with hanger (4); Be connected as support bar with longitudinal reinforcement between suspension and adjacent suspension, suspension outward outstanding end drag-line (19) is connected with derrick (9) radial direction, suspension (6) is provided with utilizes suspension to make radial keel, add hoop girt and skewed horizontal load bar, form the construction operation platform of a taper, utilize this operating platform to assemble water tank bed die;
(2), lower conical shell model sheetinstallat
Water tank template (8) is trapezoidal steel form, according to outside dimension and radian in lower conical shell, and the integral mold plate of a splicing composition back taper mutually;
Every block template is provided with lateral stiffening angle steel, and radial keel are arranged in radioactive ray; Outside template by reinforcing bar makeup ring to stirrup (10) component, and with wire rope drag-line (12) and derrick (9) radial direction be connected;
(3), reinforcement installation
After bed die has been assembled, carry out warming plate installation and warming plate finished product protection, then carry out bar connecting, reinforcing bar adopts the mode of overlap joint welding to connect,
(4) concreting;
(5) form removable.
2. type Thermal Insulation Water Tower water tank according to claim 1 adopts the high-order cast-in-situ construction method of taper suspension, it is characterized in that: in (4) concreting, under water tank, shell water tank concrete (3) uses C30 waterproof concrete, seepage-resistant grade is p6, its maximum water/binder ratio is no more than 0.6, and slump is 3-5cm.
3. type Thermal Insulation Water Tower water tank according to claim 1 adopts the high-order cast-in-situ construction method of taper suspension, it is characterized in that: water tank template (8) outside, and to be connected with 2 roads wire rope drag-line (12) and derrick (9) are radial to stirrup by 10 road reinforcing bar (10) makeup rings.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210590846.6A CN103061568B (en) | 2012-12-31 | 2012-12-31 | Tapered hanging bracket high-position in-situ casting construction method of water tank of reverse taper shell heat-preservation water tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210590846.6A CN103061568B (en) | 2012-12-31 | 2012-12-31 | Tapered hanging bracket high-position in-situ casting construction method of water tank of reverse taper shell heat-preservation water tower |
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| CN103061568A CN103061568A (en) | 2013-04-24 |
| CN103061568B true CN103061568B (en) | 2015-02-04 |
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| CN103291116B (en) * | 2013-05-20 | 2015-09-02 | 中国十五冶金建设集团有限公司 | For the netted shuttering supporting operating platform of construction of water tank on top of inverted-cone water tower |
| CN104746644B (en) * | 2013-12-26 | 2018-01-02 | 青岛安装建设股份有限公司 | A kind of internal and external double-circular shape steel pipe bearing |
| CN107313591B (en) * | 2017-09-05 | 2019-08-13 | 温州焕宏纺织品有限公司 | Kiloton water tower construction method |
| CN113882663A (en) * | 2021-10-18 | 2022-01-04 | 中国二十冶集团有限公司 | Template support device that encorbelments of water tower water tank |
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| CN2119460U (en) * | 1991-09-28 | 1992-10-21 | 福建省第二建筑工程公司 | Assembled permanent reinforced concrete form |
| CN101634197B (en) * | 2009-07-17 | 2011-02-09 | 中冶实久建设有限公司 | Novel construction method for hoisting reverse cone-shape water-tower water tank |
| CN101736904A (en) * | 2009-12-10 | 2010-06-16 | 中冶实久建设有限公司 | Method for lifting inverted cone shell water tank of reinforced concrete water tower |
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Inventor after: Qin Lilin Inventor after: Wang Zhiqiang Inventor after: Bai Xinghai Inventor after: Wu Peng Inventor after: Han Zhansheng Inventor after: He Wei Inventor before: Hao Yinghua Inventor before: Wang Zhiqiang Inventor before: Bai Xinghai Inventor before: Wu Peng Inventor before: Han Zhansheng Inventor before: He Wei |
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