CN106481109B - A kind of cooling tower X inclined struts segmentation self-balancing construction method - Google Patents
A kind of cooling tower X inclined struts segmentation self-balancing construction method Download PDFInfo
- Publication number
- CN106481109B CN106481109B CN201611012458.4A CN201611012458A CN106481109B CN 106481109 B CN106481109 B CN 106481109B CN 201611012458 A CN201611012458 A CN 201611012458A CN 106481109 B CN106481109 B CN 106481109B
- Authority
- CN
- China
- Prior art keywords
- steel strand
- construction
- strand wires
- inclined struts
- segmentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/10—Buildings forming part of cooling plants
- E04H5/12—Cooling towers
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
- E04G21/121—Construction of stressing jacks
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The invention discloses a kind of cooling tower X inclined struts to be segmented self-balancing construction method, includes the following steps, step A：Bottom-up be divided into of X inclined struts is saved into construction segmentation；Step B：It determines when construction section construction segmentation, required steel strand wires radical and its corresponding anchor point；After step C constructs entire X inclined struts, after waiting concrete to reach respective strengths, all steel strand wires are removed.X inclined strut constructions are carried out by this method, avoids and sets up scaffold below X inclined struts, cost has been saved in the use to effectively reduce steel, and it is safer for construction personnel to eliminate original working at height, shortens construction period；This method need to only expand on the basis below X inclined struts so as to the anchor point as body steel strand wires simultaneously, prestressing force is provided will pass through stretch-draw jack, steel strand wires casing and anchorage arrangement are simple, and adjustment is easy, and steel strand wires are arranged in outside X inclined struts, do not interfere with pouring for concrete.
Description
Technical field
The invention belongs to cooling tower construction technical fields, are applied more particularly to a kind of cooling tower X inclined struts segmentation self-balancing
Work method.
Background technology
Prestressing force is to improve structure military service performance, and to a kind of prestressing force that structure applies, structure is answered in advance during one's term of military service
Power can completely or partially offset the tensile stress of load generation, improve the stress of structure, using between floors being capable of extending structure
Service life.External prestressing is realized by building prestressed structure except original structure, is post-tensioned prestressing system
An important branch, it is particularly evident to bridge strengthening effect.
External prestressing can carry out in the bridge structure for built completion；Bridge force-bearing feelings can be helped improve
Condition reduces destruction of the bridge floor passage vehicle to bridge；It can also be by controlling concrete structure tension come limiting structure crack
Maximum width, to the bearing capacity of reinforcement bridge.In addition, externally pre-stressed concrete structure also has the advantage that：Prestressing force
Steel strand wires casing arrangement simply and readily adjusts, and this simplifies the operation sequences of post stretching, substantially reduce the construction time；Due to
Prestress wire is arranged in except concrete structure so that concrete pours into a mould very convenient, prestress wire and concrete
It is not bonded between structure, to reduce loss and so that the convenience that the replacement of prestress wire also becomes of stretch-draw prestressing force
It is easy.The above plurality of advantages makes external prestressing be widely used in the concrete structures such as bridge, building, in vitro
Prestressing force first Application is in the SalAnsieben bridges of Germany.Add it was verified that external prestressing is a kind of effective bridge
Solid method, consolidation effect is notable, has become one of domestic and international main bridge strengthening means at present, external prestressing technique
Using gradual maturation.
Traditional cooling tower construction first on the basis of construction X inclined struts and form tower body buttress, then in tower body buttress
On construct hyperbolic-type tower body, the construction method that the constructions of wherein X inclined struts is mainly poured using full framing, use is this
Method has the disadvantage that：The installation of full framing and dismantlement work are cumbersome, and need working at height labor intensity big, expense
It is high.Chinese patent notification number CN103938900B discloses a kind of construction method and tower crane of cooling tower, and tower crane is used to carry out
Although construction avoids the use of full framing, its construction procedure is complicated, needs huge operation platform that could complete to apply
Work, duration are longer.
Invention content
The purpose of this method is that the tower body buttress construction procedure of above-mentioned cooling tower in the prior art is cumbersome, operation platform to solve
Greatly, disadvantage long in time limit and propose a kind of cooling tower X inclined struts using external prestressing technique and be segmented self-balancing construction party
Method.
The present invention is adopted the technical scheme that in order to solve the above problem：
A kind of cooling tower X inclined struts segmentation self-balancing construction method, includes the following steps：
Step A：The bottom-up m that is divided into of X inclined struts is saved by construction point according to the height of cooling tower and Practical Project first
Section, wherein m are the natural number more than 1；
Step B：Then according to formulaIt determines when construction the i-th section construction segmentation
When, required steel strand wires radical determines that the anchor point of steel strand wires, the upper end of the steel strand wires are anchored at construction segmentation medial surface
Template on, the lower end of steel strand wires and be fixed on basis, and provide tension to steel strand wires by stretch-draw jack and open
It draws, the steel strand wires are located at the outside of X inclined struts；Wherein, k is safety coefficient, 0.5≤k≤0.8；I=1,2 ..., m；N is
Steel strand wires radical needed for i section construction segmentations are upper；J=1,2 ..., n；fijFor the tensile strength of jth root steel strand wires；AijFor jth root
The sectional area of steel strand wires；dijBe X inclined struts with basis tie point to jth root steel strand wires at a distance from；N is when the i-th section of construction is applied
When work point section, the total load head of X inclined struts；L is the total length of X inclined struts when the i-th section construction of constructing is segmented；α is X inclined struts
Angle between horizontal plane；
Step C：Required steel strand wires radical and its corresponding when calculating construction first segment construction segmentation in advance according to step B
Anchor point, and provide prestressing force using stretch-draw jack；Then often increase first calculates what needs were added in advance once section construction segmentation
Steel strand wires radical and its corresponding anchor point, and provide prestressing force using stretch-draw jack；Until entire X inclined struts have been constructed
After waiting concrete to reach respective strengths, all steel strand wires are removed by Bi Hou.
Preferably, in stepb, the N is when the i-th section construction of constructing is segmented, and the total load head of X inclined struts, including X are oblique
Pillar dead weight, the dead weight of template flitch, construction loads and dynamic loads, the dynamic loads are vibrated concrete load and topple over mixed
The greater in solidifying soil load the two.
The advantageous effect of present invention is that：X inclined strut constructions are carried out by this method, are avoided under X inclined struts
Side sets up scaffold, and cost has been saved in the use to effectively reduce steel, eliminates original working at height for construction
Personnel are safer, shorten construction period；This method need to only expand on the basis below X inclined struts so as to as body steel simultaneously
The anchor point of twisted wire provides prestressing force will pass through stretch-draw jack, and steel strand wires casing and anchorage arrangement are simple, and adjustment is easy,
And steel strand wires are arranged in outside X inclined struts, do not interfere with pouring for concrete.
Description of the drawings
Fig. 1 is the dimensional structure diagram of a repetitive unit in X inclined struts.
Specific implementation mode
The present invention is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention includes the following steps：
Step A：The bottom-up m that is divided into of X inclined struts is saved by construction point according to the height of cooling tower and Practical Project first
Section 2, wherein m are the natural number more than 1；
Step B：Then according to formulaIt determines when construction the i-th section construction segmentation
When 2, the upper end of 3 radical of required steel strand wires and its corresponding anchor point, the steel strand wires 3 is anchored at 2 inside of construction segmentation
In the template in face, construction segmentation 2 is inclined inwardly, the lower end of steel strand wires 3 and is fixed on basis 4, and passes through tensioning
Jack 5 provides tension to steel strand wires 3 and carries out tensioning, and the steel strand wires 3 are located at the lateral surface of X inclined struts 6；Wherein, k is safety
Coefficient, 0.5≤k≤0.8；I=1,2 ..., m；N is 3 radical of required steel strand wires in the i-th section construction segmentation 2；J=1,2 ..., n；
fijFor the tensile strength of jth root steel strand wires 3；AijFor the sectional area of jth root steel strand wires 3；dijFor the connection of X inclined struts 6 and basis
Distances of the point O to jth root steel strand wires 3；N is the total load head of X inclined struts 6 when the i-th section construction of constructing is segmented 2；L is when construction
When the i-th section construction segmentation 2, the total length of X inclined struts 6；Angles of the α between X inclined struts 6 and horizontal plane；
Step C：Required 3 radical of steel strand wires and its corresponding when calculating construction first segment construction segmentation in advance according to step B
Anchor point, and using stretch-draw jack 5 provide prestressing force；Then often increase and added once the first pre- needs that calculate of section construction segmentation
3 radical of steel strand wires and its corresponding anchor point, and using stretch-draw jack 5 provide prestressing force；Until by entire X inclined struts 6
After construction, after waiting concrete to reach respective strengths, all steel strand wires 3 are removed.
In stepb, the N is the total load head of X inclined struts 6 when the i-th section construction of constructing is segmented 2, including X inclined struts 6
Dead weight, the dead weight of template flitch and dynamic loads, the dynamic loads are vibrated concrete load and topple over both concrete loads
Middle the greater.
In the present embodiment, the upper end of steel strand wires 3 be anchored at construction segmentation 2 medial surfaces template on, X inclined struts 6 be to
Tilted, work progress is：Template, assembling reinforcement, casting concrete are set up, therefore, 3 upper end of steel strand wires can only be anchored at
In the template of construction 2 medial surfaces of segmentation.
X inclined strut constructions are carried out by this method, avoids and sets up scaffold below X inclined struts, to effectively reduce
Cost has been saved in the use of steel, and it is safer for construction personnel to eliminate original working at height, shortens construction week
Phase；This method need to only expand on the basis of 6 lower section of X inclined struts so as to the anchor point as body steel strand wires 3 simultaneously, be opened with will pass through
Jack 5 is drawn to provide prestressing force, 3 casing of steel strand wires and anchorage arrangement are simple, and adjustment is easy, and steel strand wires 3 are arranged in X inclined struts
Outside 6, pouring for concrete is not interfered with.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features,
But these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (2)
1. a kind of cooling tower X inclined struts are segmented self-balancing construction method, which is characterized in that include the following steps：
Step A：The bottom-up m that is divided into of X inclined struts is saved by construction segmentation according to the height of cooling tower and Practical Project first,
Middle m is the natural number more than 1；
Step B：Then according to formulaIt determines when the i-th section construction of constructing is segmented, institute
The steel strand wires radical needed determines that the anchor point of steel strand wires, the upper end of the steel strand wires are anchored at the mould of construction segmentation medial surface
It on plate, the lower end of steel strand wires and is fixed on basis, and provides tension to steel strand wires by stretch-draw jack and carry out tensioning, institute
State the outside that steel strand wires are located at X inclined struts；Wherein, k is safety coefficient, 0.5≤k≤0.8；I=1,2 ..., m；N is that the i-th section is applied
Required steel strand wires radical in work point section；J=1,2 ..., n；fijFor the tensile strength of jth root steel strand wires；AijFor jth root steel strand wires
Sectional area；dijBe X inclined struts with basis tie point to jth root steel strand wires at a distance from；N is when construction the i-th section construction segmentation
When, the total load head of X inclined struts；L is the total length of X inclined struts when the i-th section construction of constructing is segmented；α is X inclined struts and level
Angle between face；
Step C：Required steel strand wires radical and its corresponding anchoring when calculating construction first segment construction segmentation in advance according to step B
Point, and provide prestressing force using stretch-draw jack；Then often increase to construct once section and be segmented the first pre- steel strand for calculating and needing to add
Line radical and its corresponding anchor point, and provide prestressing force using stretch-draw jack；Until the construction of entire X inclined struts is finished
Afterwards, after waiting concrete to reach respective strengths, all steel strand wires are removed.
2. cooling tower X inclined struts according to claim 1 are segmented self-balancing construction method, which is characterized in that in step B
In, the N be when construct i-th section construction segmentation when, the total load head of X inclined struts, including X inclined struts dead weight, template flitch dead weight,
Construction loads and dynamic loads, the dynamic loads are vibrated concrete load and topple over the greater in both concrete loads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012458.4A CN106481109B (en) | 2016-11-17 | 2016-11-17 | A kind of cooling tower X inclined struts segmentation self-balancing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611012458.4A CN106481109B (en) | 2016-11-17 | 2016-11-17 | A kind of cooling tower X inclined struts segmentation self-balancing construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106481109A CN106481109A (en) | 2017-03-08 |
| CN106481109B true CN106481109B (en) | 2018-10-02 |
Family
ID=58272587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611012458.4A Expired - Fee Related CN106481109B (en) | 2016-11-17 | 2016-11-17 | A kind of cooling tower X inclined struts segmentation self-balancing construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106481109B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108151B (en) * | 2019-05-30 | 2024-02-06 | 中国电力工程顾问集团西北电力设计院有限公司 | Natural ventilation cooling tower and reinforced steel pipe concrete X pillar thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2461794A1 (en) * | 1979-07-24 | 1981-02-06 | Electricite De France | REFRIGERATION TOWER CONSTRUCTION SYSTEM |
| CN103397780B (en) * | 2013-08-09 | 2016-01-20 | 四川电力建设三公司 | Air cooling tower X-type column construction method |
| CN204357167U (en) * | 2014-11-18 | 2015-05-27 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of cooling stack inclined strut structure |
-
2016
- 2016-11-17 CN CN201611012458.4A patent/CN106481109B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106481109A (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105926444B (en) | A kind of concrete arch-type bridge arching method | |
| CN104975566B (en) | Apply the steel pipe support in cable-stayed bridge arch tower is constructed | |
| CN103046645B (en) | A kind of whole casting structure and construction method of Large-span Precast | |
| CN104032668B (en) | Half-through steel purlin-Combined concrete continuous steel frame bridge | |
| CN110804952B (en) | Suspension bridge beam prefabrication and assembly construction process | |
| CN110453613B (en) | Full-section one-step suspension casting construction method for large-span beam bridge box girder | |
| CN206956565U (en) | A kind of steel box girder bridge hogging moment area pre-stress system | |
| CN110965474A (en) | Construction method of cable tower cross beam | |
| CN113638304B (en) | Concrete beam type bridge hidden cover beam structure system and construction method thereof | |
| CN102900024A (en) | Overturning die plate for large-scale concrete structure and using method for overturning die plate | |
| CN106481109B (en) | A kind of cooling tower X inclined struts segmentation self-balancing construction method | |
| CN111877129B (en) | Arch ring construction method of continuous arch bridge | |
| CN110042743A (en) | The hydraulic climbing die block system of twin legged thin wall hollow pier with synchronize climb construction technology | |
| CN107100322B (en) | Post stretching vertical prestressing cast-in-place concrete rod structure and construction method | |
| CN206769200U (en) | First wear formula post stretching vertical prestressing cast-in-place concrete rod structure | |
| CN108221704A (en) | A kind of bridge four beam type I-shaped steel-concrete composite beams and construction method | |
| CN210140771U (en) | Construction work platform hoisting frame of high mound of bridge | |
| CN211815595U (en) | Lower tower column tension and compression structure for cable tower | |
| CN106906842A (en) | One kind draws anchor formula L-type Reinforced Concrete Retaining Walls | |
| CN209066293U (en) | A kind of flexible suspension for long-span arch bridge main girder construction | |
| CN111749133A (en) | Beam-arch combined rigid frame bridge and construction method of bridge pier thereof | |
| CN207296399U (en) | Continuous placing is molded overall assembled stair template system | |
| CN203741729U (en) | Pre-stress supporting system used for bridge incremental launching construction method | |
| CN206486822U (en) | A kind of bridge strengthening is with high-strength prestressed steel wire batch stretching and anchoring device | |
| CN105971287B (en) | Counter force wall vertical prestressing construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20191117 |