CN106522104A - Construction method of curved-surface arc-shaped concrete tower - Google Patents
Construction method of curved-surface arc-shaped concrete tower Download PDFInfo
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- CN106522104A CN106522104A CN201611193675.8A CN201611193675A CN106522104A CN 106522104 A CN106522104 A CN 106522104A CN 201611193675 A CN201611193675 A CN 201611193675A CN 106522104 A CN106522104 A CN 106522104A
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- 238000010276 construction Methods 0.000 title claims abstract description 54
- 238000009415 formwork Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 32
- 230000009194 climbing Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 66
- 239000010959 steel Substances 0.000 claims description 66
- 238000009434 installation Methods 0.000 claims description 29
- 230000002787 reinforcement Effects 0.000 claims description 19
- 238000013461 design Methods 0.000 claims description 15
- 241000282326 Felis catus Species 0.000 claims description 6
- 238000011900 installation process Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 239000002689 soil Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 229910000679 solder Inorganic materials 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method of a curved surface arc concrete tower, wherein the tower is composed of two-limb towers and a tower top folding section, the two-limb towers are constructed in a segmented and gradual mode by adopting a hydraulic climbing formwork method along the tower elevation, more than one temporary cross brace is arranged between the two-limb towers in the construction process of the two-limb towers, corbels are respectively embedded in the inner side walls of the upper ends of the towers to serve as fulcrums, bailey beams are hoisted on the corbels to serve as a tower top folding section supporting platform, and finally a david tower folding method is adopted to perform concrete layered pouring construction to complete the Davidian folding of the tower. The method can be used for the hyperboloid arc concrete tower of the extra-large cable-stayed bridge, the construction is carried out by matching the curved surface adjustable template with the hydraulic climbing formwork system, the operation is convenient, the safety is high, the adjustment of the curved surface adjustable template is convenient, the line type and the matching precision of the tower column are controlled from the source, and the control of the hoisting precision of the main tower is convenient.
Description
Technical field
The present invention relates to technical field of bridge construction, relates in particular to a kind of curved surface arc concrete towers construction method.
Background technology
Recently as economy and social development, the domestic aesthetic appearance to urban facilities requires more and more higher, and bridge is built
Build, the factors such as geography, environment, humanity, aesthetics will be considered toward contact.It is many across
More road and rail, the large span of rivers and lakes, the Urban Bridge of large space, used as landmark, its moulding becomes more diverse
And complication.
The king-tower of large span stayed-cable bridge and suspension bridge is not only main supporting member, and the key for determining Bridges
Part.Wherein curved surface arc concrete towers have obtained the favor of many bridge constructions teacher, but while bridge main tower structure are built
Make and construct and propose tightened up requirement.Refer to for the construction of Curved surface heterotype concrete king-tower structure lacks relevant specification at present
Lead, be available for the engineering experience used for reference less, be available for the engineering experience used for reference less.While Curved surface heterotype concrete master
Tower structure moulding is complicated, and construction, installation difficulty are big, and construction precision has high demands.
The content of the invention
The technical problem to be solved is to provide one kind and can realize the requirement of tower alignment control and concrete stress
Control is required, and energy safety, the curved surface arc concrete towers construction method successfully closed up.
In order to solve above-mentioned technical problem, the present invention is adopted the following technical scheme that：A kind of curved surface arc concrete towers construction
Method, tower are made up of double limb king-posts and tower top closure segment, using hydraulic climbing formwork method along king-post absolute altitude carry out it is segmented progressively
The double limb king-posts of construction, and the false stull of more than, in the work progress of double limb king-posts, is installed between double limb king-posts,
The upper end madial wall of each king-post distinguishes pre-buried bracket as fulcrum, lifts Bailey beam and support flat as tower top closure segment on bracket
Platform, finally carries out concreting in lifts construction using falsework method and completes Gong Ta and close up.
Further, false stull is made up of horizontal brace and two diagonal braces, and in the K shapes for keeping flat, horizontal brace is by interlude
Constitute with two horizontal segments, the concrete installation process of false stull is：Will be two horizontal segments of horizontal brace oblique with two respectively on ground
Support is welded into Y shaped bracket, respectively Y shaped bracket is welded on the embedded board on double limb king-posts with tower crane, then lifts level horizontal
The interlude of support, one end of the interlude of horizontal brace are docked with the horizontal segment of side Y shaped bracket using ring flange connection, and are twisted
Tight bolt, steel pipe socket of the other end using internal diameter more than horizontal brace external diameter are docked with the horizontal segment of opposite side Y shaped bracket, are gone forward side by side
Row is welded and fixed.
Further, the concrete pre-buried process of bracket is：In the pre-buried type horizontally outward encorbelmented of the upper end madial wall of king-post
Steel, and the madial wall in the king-post of shaped steel bottom forms oblique strut by pre-embedded steel slab, so as to form triangle bracket conduct
The fulcrum of Bailey beam, carries out the lifting of Bailey beam after king-post concrete strength reaches requirement.
Further, in the work progress of double limb king-posts, the installation of steel anchor beam, the concrete installation of steel anchor beam have also been carried out
Process is：The lifting of steel anchor beam is carried out using tower crane, the axis in length and breadth of steel anchor beam base is made with the axis weight in length and breadth of construction lofting
Close, the position overlapped with king-post xoncrete structure in steel anchor beam outstanding leg, steel anchor beam end plate, steel anchor beam arm-tie after positioning is passed through
PBL keys penetrate reinforcing bar to fix steel anchor beam.
Further, the quantity of Bailey beam is more than two-layer, and is criss-cross arranged.
Further, the work progress of double limb king-posts is comprised the following steps：
(1) reinforcement installation, and cat ladder built-in fitting and creeping formwork built-in fitting are installed according to design requirement；
(2) creeping formwork skeleton is installed；
(3) concreting, and concrete curing is carried out after the completion of concreting；
(4) reinforcement installation, and cat ladder built-in fitting and creeping formwork built-in fitting are installed according to design requirement；
(5) creeping formwork template is adjusted and is climbed in the presence of hydraulic test, return to step (3) carries out concrete and pours afterwards
Build, until double limb king-posts complete construction.
Further, the detailed process of reinforcement installation is：Vertical main reinforcement installation is first carried out, stirrup and longitudinal direction is then carried out
The installation of reinforcing bar, transverse steel.
Further, the detailed process of creeping formwork skeleton installation is：Creeping formwork skeleton is first completed and acceptance(check) in installation on ground
Afterwards, then integral hoisting is carried out, installs the bottom girder of each layer platform, complete each layer platform plank, inner side arranges safety net together, outward
Side sets close mesh Air Filter, and the connection of template and upper mounting plate support body is carried out before moving back mould, with wood when the rotation angle position of platform does not climb
Plate is closed, and is hurted sb.'s feelings with Junk prevention or other security incidents.
Further, the detailed process of concreting is：Concrete using sleeping pump placement layer by layer, lift height is
0.3m, is gradually advanced in the horizontal direction, and concrete is vibrated using poker vibrator.
The present invention has advantages below compared with prior art：
1st, the present invention can be used for especially big cable-stayed bridge hyperboloid arc concrete towers, and this method is using hydraulic climbing formwork method along tower
Post absolute altitude carries out segmented double limb king-posts of progressively constructing, and easy to operate, safe, template is easy to adjust, controls from source
King-post line style and matching precision, are easy to king-tower lifting precision controlling.
2nd, the present invention arranges false stull when king-post climbs between king-post, realizes especially big cable-stayed bridge curved surface arc and mixes
Solidifying soil tower alignment control is required and concrete stress control is required.
3rd, it is of the invention when arch tower is closed up, by being used as fulcrum in double limb king-post side wall pre-embedded steel slab solder type steel corbels,
The crisscross Bailey beam of multilayer is lifted thereon as tower top closure segment support platform, and concrete delamination is carried out using falsework method
Pouring construction.By the enforcement of this method, realize especially big cable-stayed bridge curved surface arc concrete towers safety, successfully close up.
4th, the present invention carries out the lifting of steel anchor beam using tower crane in steel anchor beam lifting construction, is coordinated using upper and lower hoist cable
Steel hanging beam carries out 4 points of liftings, and in preventing hoisting process, excessive stress and deformation occurs in steel anchor beam, realizes especially big cable-stayed bridge
Curved surface arc concrete towers noose pipe position deviation meets design and code requirement.
5th, the present invention is asked for key technologies such as Sarasota structure construction procedure security control, construction temporary structure optimization designs
Topic, carries out relevant theory analysis and numerical simulation study, and Jing engineering practices are summarized, and defines targetedly technical measures and applies
Work technique, tower body curved surface arc structure lines type meet design requirement, and waterborne, high-altitude large-tonnage Hoisting Security reliability is cost-effective.
Description of the drawings
Construction flow charts of the Fig. 1 for one embodiment of the invention.
Fig. 2 is the false stull structural representation in one embodiment of the invention.
Fig. 3 is the false stull scheme of installation in one embodiment of the invention.
Fig. 4 is the steel anchor beam lifting schematic diagram in one embodiment of the invention.
Right views of the Fig. 5 for Fig. 4.
Fig. 6 is the scheme of installation of bracket and Bailey beam in one embodiment of the invention.
Fig. 7 is template assembly figure.
Fig. 8 binds figure for king-tower.
In accompanying drawing the mark of each part for：The interlude of 111 horizontal braces, the horizontal segment of 112 horizontal braces, 12 diagonal braces,
20 steel anchor beams, hoist cable, 3 times hoist cables, 33 steel hanging beams, 41 shaped steel, 42 oblique struts, 50 Bailey beams on 31.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings：
By taking a kind of oblique tensile tower with Zhuang headwear scarf characteristic as an example, the tower is by double limb king-posts and tower top closure segment
Constitute, the curved surface arc concrete towers construction method of one embodiment of the invention is carried out point along king-post absolute altitude using hydraulic climbing formwork method
Sections is progressively constructed double limb king-posts, and in the work progress of double limb king-posts, installs more than one and face between double limb king-posts
When stull, distinguish pre-buried bracket as fulcrum in the upper end madial wall of each king-post, Bailey beam lifted on bracket and is closed up as tower top
Section support platform, finally carries out concreting in lifts construction using falsework method and completes Gong Ta and close up, referring to Fig. 1, specifically include
Following steps：
(1) reinforcement installation
Vertical main reinforcement installation is first carried out, stirrup and longitudinal reinforcement, the installation of transverse steel, main reinforcement connection is then carried out
Using straight screw sleeve joint connection manner, joint should be staggeredly arranged, and joint staggers at least 1m, and same section joint must not exceed
The 1/2 of the section cage bar quantity, and strictly should operate by job specfication；
Require to carry out the installation of cat ladder built-in fitting and creeping formwork built-in fitting inside king-tower according to design drawing and creeping formwork scheme；
(2) creeping formwork skeleton is installed
Creeping formwork skeleton is first completed and after acceptance(check) in installation on ground, then carries out integral hoisting, installs each layer platform
Bottom girder, completes each layer platform plank, and inner side arranges safety net together, and outside sets close mesh Air Filter, carry out before moving back mould template with it is upper
The connection of platform support body, is closed with plank when the rotation angle position of platform does not climb, is hurted sb.'s feelings with Junk prevention or other security incidents；
(3) concreting
King-post concrete is advisable with 0.3m, is gradually advanced in the horizontal direction using sleeping pump placement layer by layer, lift height, coagulation
Soil is vibrated using poker vibrator, need to be inserted soon and be pulled out slowly, while will be inserted perpendicularly in concrete, forbid to be dragged with vibrating spear when vibrating
Concrete distributing, vibrating spear moving interval must not exceed 1.5 times of effective radius of clean-up；
After the completion of solidifying soil is poured, should receive slurry after as early as possible with geotextiles cover and sprinkle water maintenance, must not damage during covering or
The surface of pollution concrete, the number of times of watering is can keep concrete surface often in moisture state as degree；
(4) reinforcement installation
Vertical main reinforcement installation is first carried out, stirrup and longitudinal reinforcement, the installation of transverse steel, main reinforcement connection is then carried out
Using straight screw sleeve joint connection manner, joint should be staggeredly arranged, and joint staggers at least 1m, and same section joint must not exceed
The 1/2 of the section cage bar quantity, and strictly should operate by job specfication；
Require to carry out the installation of cat ladder built-in fitting and creeping formwork built-in fitting inside king-tower according to design drawing and creeping formwork scheme；
(5) creeping formwork template is adjusted and is climbed
Referring to Fig. 7, size and linear requirement of the king-post circular formwork according to design, by creeping formwork in the presence of hydraulic test
Template is adjusted and is climbed, and return to step (3) carries out the concreting of next sections afterwards, until double limb king-posts complete construction.
In the present embodiment, king-post supporting leg point 32 sections, king-post creeping formwork often climb 4.5m, along two pieces of circles of king-post center line
Segmental arc template cuts off 17.3mm from intermediate symmetry, while two side template of king-post center line is moved to arc section；
Hydraulic self-creeping formwork is, with hydraulic pressure as power, to propose mould shadoof double acting by oil cylinder, makes guide rail realize mutually climbing with support body,
Process of entirely climbing does not need any other hoisting equipment, except installing and removing.The solidifying soil of climbing form system construction technology is poured
Move after complete rear → form removal → wall-attaching equipment → lift rail → support body → assembling reinforcement of climbing → template cleaning brush releasing agent is installed
On → embedded part fixed form → matched moulds → casting concrete；
Total is only once assembled, during climbing without formwork again, form removal, set up the work such as pin hand and transport, mix
Solidifying soil keeps continuous placing, and speed of application is fast, can avoid construction joint, while have that a large amount of templates, pin hand material and labour are saved,
Reduce labor intensity, reduce construction cost, the advantages of construction safety, realize especially big cable-stayed bridge curved surface arc concrete towers construction
Safety and line style quality control.Easy to operate, safe, curved surface adjustable formwork is easy to adjust, it is not necessary to which high-frequency is more changed the mold
Plate, climbing speed are fast, improve engineering construction speed, compared with traditional method, can save a large amount of mould materials and man-hour；
(6) closure segment bracket is installed
In the pre-buried shaped steel 41 horizontally outward encorbelmented of the upper end madial wall of king-post, and the madial wall of the king-post in shaped steel bottom
Oblique strut 42 is formed by pre-embedded steel slab, shaped steel 41 forms triangle bracket propping up as Bailey beam 50 with oblique strut 42
Point, carries out the lifting of Bailey beam after king-post concrete strength reaches requirement, can so realize that curved surface arc concrete towers are pacified
Entirely, smoothly close up；
In the present embodiment, the I45a I-steel of the pre-buried long 3m of wall in king-post side, 1m shapes together with the diagonal brace of bottom of outwards encorbelmenting
Into bracket, longitudinal Bailey beam of 12m length is first set up on bracket, and is welded and fixed with pre-buried I-steel with angle steel, then lifted horizontal
To Bailey beam, arrangement pitch 0.9m, and it is welded and fixed, then lifts upper strata vertically and horizontally Bailey beam successively, lift 8 layers altogether and hand in length and breadth
Wrong Bailey beam, scaffold building construction and formwork reinforcement are easy in the laterally reserved space in Bailey beam both sides；
(7) Gong Ta closes up
Concreting in lifts construction is carried out using falsework method, referring to Fig. 8；
(8) king-tower final acceptance of construction
According to《Urban Bridge engineering construction and inspection of quality specification》CJJ 2-2008 specifications carry out an acceptance inspection to king-tower.Tissue
Personnel carry out an acceptance inspection to inspection projects such as king-tower Surface Quality of Concrete, perpendicularity, wall thickness, size, built-in fittings.
In the present embodiment, referring to Fig. 2 and Fig. 3, false stull is made up of horizontal brace and two diagonal braces 12, in the K shapes for keeping flat,
Horizontal brace is made up of interlude 111 and two horizontal segments 112, and the concrete installation process of false stull is：It is level is horizontal on ground
Two horizontal segments of support are welded into Y shaped bracket with two diagonal braces respectively, are welded to Y shaped bracket with tower crane respectively pre- on double limb king-posts
On buried plate, the interlude of horizontal brace is then lifted, and one end of the interlude of horizontal brace is using ring flange connection and side Y shape
The horizontal segment docking of support, and bolt is tightened, the other end is more than the steel pipe socket and opposite side Y shape of horizontal brace external diameter using internal diameter
The horizontal segment docking of support, and be welded and fixed；
Above-mentioned false stull, it is ensured that the linear and Internal force control of the double limb king-posts of king-tower is required in work progress, is improve
The stability of double limb king-posts before closing up, its deflection deformation are little, and hoisting and hanging is easy, and steel using amount is saved, and considerably reduces construction difficult
Degree and potential safety hazard；In one embodiment, tetra- road false stulls of Liang Pai are set between double limb king-posts altogether, and absolute altitude is respectively
32m, 50m, 75m, 95m, adoptSteel pipe manufacturing.Realize especially big cable-stayed bridge curved surface arc concrete towers linear
Control is required and concrete stress control is required.
In the present embodiment, the work progress of double limb king-posts, also including the installation of steel anchor beam, the concrete installation process of steel anchor beam
For：The lifting of steel anchor beam is carried out using tower crane, the axis in length and breadth of steel anchor beam base is made with the dead in line in length and breadth of construction lofting, so
Repetition measurement is carried out to the mouth of pipe coordinate of the noose pipe on steel anchor beam again afterwards, coordinates tower crane positioning steel anchor beam, positioning using electric block
The position for being overlapped with king-post xoncrete structure in steel anchor beam outstanding leg, steel anchor beam end plate, steel anchor beam arm-tie afterwards is penetrated by PBL keys
Reinforcing bar is fixing steel anchor beam, it is ensured that steel anchor beam structure does not shift in concrete construction；
According to the design feature of steel anchor beam, referring to Fig. 4 and Fig. 5, steel hanging beam 33 pairs is coordinated using upper hoist cable 31, lower hoist cable 32
Steel anchor beam 20 carries out 4 points of liftings, and in preventing hoisting process, excessive stress and deformation occurs in steel anchor beam.Will according to design drawing
Ask, the interim suspension centre of steel anchor beam is arranged on steel anchor beam along bridge to both sides, and the lifting of steel anchor beam is as shown in Figure 3；
Integral hoisting Bailey beam support avoids that risk is high, the height scaffolding that difficulty is big is taken and tears operation open, eliminates a large amount of
The potential safety hazards such as personal height climbing, falling object from high altitude, meanwhile, construction period has been greatly shortened, especially big cable-stayed bridge has been realized bent
Face arc concrete towers noose pipe position deviation meets design and code requirement.
The present invention is asked for key technologies such as Sarasota structure construction procedure security control, construction temporary structure optimization designs
Topic, carries out relevant theory analysis and numerical simulation study, and Jing engineering practices are summarized, and defines targetedly technical measures and applies
Work technique, tower body curved surface arc structure lines type meet design requirement, and waterborne, high-altitude large-tonnage Hoisting Security reliability is cost-effective.
It should be understood that example as herein described and embodiment are not limited to the present invention, this area only for explanation
Technical staff can make various modifications or change according to it, all any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of curved surface arc concrete towers construction method, tower are made up of double limb king-posts and tower top closure segment, it is characterised in that：
Segmented double limb king-posts of progressively constructing are carried out along king-post absolute altitude using hydraulic climbing formwork method, and in the work progress of double limb king-posts
In, the false stull of more than is installed between double limb king-posts, pre-buried bracket conduct is distinguished in the upper end madial wall of each king-post
Fulcrum, lifts Bailey beam as tower top closure segment support platform, finally carries out concreting in lifts using falsework method on bracket
Construction completes Gong Ta and closes up.
2. curved surface arc concrete towers construction method as claimed in claim 1, it is characterised in that：False stull is by horizontal brace
Constitute with two diagonal braces, in the K shapes for keeping flat, horizontal brace is made up of interlude and two horizontal segments, false stull was specifically installed
Cheng Wei：Two horizontal segments of horizontal brace are welded into into Y shaped bracket with two diagonal braces respectively on ground, with tower crane respectively by Y shaped bracket
It is welded on the embedded board on double limb king-posts, then lifts the interlude of horizontal brace, one end of the interlude of horizontal brace is adopted
Docked with the horizontal segment of side Y shaped bracket with ring flange connection, and tighten bolt, the other end is using internal diameter more than outside horizontal brace
The steel pipe socket in footpath is docked with the horizontal segment of opposite side Y shaped bracket, and is welded and fixed.
3. curved surface arc concrete towers construction method as claimed in claim 1 or 2, it is characterised in that：Bracket it is concrete pre-buried
Process is：In the pre-buried shaped steel horizontally outward encorbelmented of the upper end madial wall of king-post, and the madial wall in the king-post of shaped steel bottom leads to
Cross pre-embedded steel slab and form oblique strut, so that triangle bracket is formed as the fulcrum of Bailey beam, treat that king-post concrete strength reaches
The lifting of Bailey beam is carried out to after requiring.
4. curved surface arc concrete towers construction method as claimed in claim 1 or 2, it is characterised in that：In applying for double limb king-posts
During work, the installation of steel anchor beam has also been carried out, and the concrete installation process of steel anchor beam is：Hanging for steel anchor beam is carried out using tower crane
Dress, makes the axis in length and breadth of steel anchor beam base with the dead in line in length and breadth of construction lofting, in steel anchor beam outstanding leg, steel anchor beam after positioning
The position that end plate, steel anchor beam arm-tie are overlapped with king-post xoncrete structure penetrates reinforcing bar by PBL keys to fix steel anchor beam.
5. curved surface arc concrete towers construction method as claimed in claim 1 or 2, it is characterised in that：The quantity of Bailey beam exists
More than two-layer, and it is criss-cross arranged.
6. curved surface arc concrete towers construction method as claimed in claim 1 or 2, it is characterised in that：The construction of double limb king-posts
Process is comprised the following steps：
(1) reinforcement installation, and cat ladder built-in fitting and creeping formwork built-in fitting are installed according to design requirement；
(2) creeping formwork skeleton is installed；
(3) concreting, and concrete curing is carried out after the completion of concreting；
(4) reinforcement installation, and cat ladder built-in fitting and creeping formwork built-in fitting are installed according to design requirement；
(5) creeping formwork template is adjusted and is climbed in the presence of hydraulic test, return to step (3) carries out concreting afterwards,
Until double limb king-posts complete construction.
7. curved surface arc concrete towers construction method as claimed in claim 6, it is characterised in that：The detailed process of reinforcement installation
For：Vertical main reinforcement installation is first carried out, stirrup and longitudinal reinforcement, the installation of transverse steel is then carried out.
8. curved surface arc concrete towers construction method as claimed in claim 6, it is characterised in that：It is concrete that creeping formwork skeleton is installed
Process is：Creeping formwork skeleton is first completed and after acceptance(check) in installation on ground, then carries out integral hoisting, installs the bottom of each layer platform
Beam, completes each layer platform plank, and inner side arranges safety net together, and outside sets close mesh Air Filter, carries out template flat with upper before moving back mould
The connection of stand body, is closed with plank when the rotation angle position of platform does not climb, is hurted sb.'s feelings with Junk prevention or other security incidents.
9. curved surface arc concrete towers construction method as claimed in claim 6, it is characterised in that：The concrete mistake of concreting
Cheng Wei：Using sleeping pump placement layer by layer, lift height is 0.3m to concrete, is gradually advanced in the horizontal direction, and concrete is using insertion
Formula vibrator vibrates.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611193675.8A CN106522104A (en) | 2016-12-21 | 2016-12-21 | Construction method of curved-surface arc-shaped concrete tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611193675.8A CN106522104A (en) | 2016-12-21 | 2016-12-21 | Construction method of curved-surface arc-shaped concrete tower |
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Cited By (8)
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|---|---|---|---|---|
| CN107939141A (en) * | 2017-11-16 | 2018-04-20 | 中国建筑局（集团）有限公司 | Steel structure tower and construction method thereof |
| CN109467341A (en) * | 2018-11-23 | 2019-03-15 | 中交第三航务工程局有限公司 | The construction method and application of a kind of king-post concrete, concrete |
| CN109763431A (en) * | 2019-03-05 | 2019-05-17 | 湖北旺科模板有限公司 | A kind of bridge tower hydraulic climbing formwork is without pulling rod formwork construction method |
| CN110042756A (en) * | 2019-04-03 | 2019-07-23 | 中铁大桥局集团有限公司 | Bridge high tower construction method and its construction equipment |
| CN110205936A (en) * | 2019-05-07 | 2019-09-06 | 中国建筑第六工程局有限公司 | A kind of arc step formula Sarasota crossbeam side template and its construction method |
| CN110847012A (en) * | 2019-12-20 | 2020-02-28 | 中铁宝桥集团有限公司 | Protection device for composite beam cable-stayed bridge and construction method thereof |
| CN111005302A (en) * | 2019-12-30 | 2020-04-14 | 中交路桥华南工程有限公司 | Steel anchor beam mounting method |
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| CN110205936A (en) * | 2019-05-07 | 2019-09-06 | 中国建筑第六工程局有限公司 | A kind of arc step formula Sarasota crossbeam side template and its construction method |
| CN110205936B (en) * | 2019-05-07 | 2023-12-12 | 中国建筑第六工程局有限公司 | Arc-shaped stepped cable tower beam side template and construction method thereof |
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| CN111005302B (en) * | 2019-12-30 | 2021-07-30 | 中交路桥华南工程有限公司 | Steel anchor beam mounting method |
| CN113445433A (en) * | 2021-08-13 | 2021-09-28 | 北京城建集团有限责任公司 | Bridge tower construction method |
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