CN106481109A - A kind of cooling tower X inclined strut segmentation self-balancing construction method - Google Patents
A kind of cooling tower X inclined strut segmentation self-balancing construction method Download PDFInfo
- Publication number
- CN106481109A CN106481109A CN201611012458.4A CN201611012458A CN106481109A CN 106481109 A CN106481109 A CN 106481109A CN 201611012458 A CN201611012458 A CN 201611012458A CN 106481109 A CN106481109 A CN 106481109A
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- China
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- inclined strut
- construction
- strand wires
- steel strand
- segmentation
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- 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
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- 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 strut segmentation self-balancing construction method, comprises the steps, step A：Section construction segmentation is divided into by bottom-up for X inclined strut；Step B：Determine when construction the section construction segmentation, required steel strand wires radical and its corresponding anchor point；After the construction of whole X inclined strut is finished by step C, after waiting concrete to reach respective strengths, all steel strand wires are removed.X inclined strut construction is carried out by this method, it is to avoid below X inclined strut, scaffold is set up, cost has been saved in the use so as to effectively reduce steel, it is safer for workmen to eliminate original work high above the ground, shortens construction period；While this method only need to expand the basis below X inclined strut so as to the anchor point as body steel strand wires, prestressing force is provided will pass through stretch-draw jack, steel strand wires sleeve pipe and anchorage arrangement are simple, and adjustment is easily, and steel strand wires are arranged in outside X inclined strut, pouring for concrete is not interfered with.
Description
Technical field
The invention belongs to cooling tower construction technical field, more particularly to a kind of cooling tower X inclined strut segmentation self-balancing is applied
Work method.
Background technology
Prestressing force is that to a kind of prestressing force that structure applies, structure in advance should during one's term of military service in order to improve structure military service performance
Power can completely or partially offset the tension of load generation, improve the stress of structure, and application between floors being capable of extending structure
Service life.External prestressing is realized by building prestressed structure outside original structure, is post-tensioned prestressing system
An important branch, particularly evident to bridge strengthening effect.
External prestressing can be carried out having built in the bridge structure for completing；Bridge force-bearing feelings can be helped improve
Condition, reduces current destruction of the vehicle to bridge of bridge floor；Can also be by controlling xoncrete structure tension force come limiting structure crack
Breadth Maximum, so as to the bearing capacity of reinforcement bridge.Additionally, externally pre-stressed concrete structure also has the advantage that：Prestressing force
Steel strand wires sleeve pipe arrangement is simply and readily adjusted, and be this simplifies the operation sequence of post stretching, is substantially reduced the engineering time；Due to
Prestress wire is arranged in outside xoncrete structure so that concrete cast is very convenient, prestress wire and concrete
Not do not bond between structure, so as to reduce loss and so that the convenience that also becomes of the replacing of prestress wire of stretch-draw prestressing force
Easy.Above plurality of advantages causes external prestressing to be widely used in the xoncrete structures such as bridge, building, in vitro
Prestressing force first Application is in the SalAnsieben bridge of Germany.It was verified that external prestressing is a kind of effective bridge adding
Solid method, its consolidation effect are notable, have become one of main both at home and abroad bridge strengthening means at present, external prestressing technique
Application is gradually ripe.
Traditional cooling tower construction first on the basis of construct X inclined strut and form tower body buttress, then in tower body buttress
On construct hyperbolic-type tower body, the construction method that the construction of wherein X inclined strut is mainly poured using full framing, using this
Method has the disadvantage that：The installation of full framing and dismantlement work loaded down with trivial details, and need work high above the ground high labor intensive, expense
High.Chinese patent notification number CN103938900B discloses a kind of construction method of cooling tower and tower crane, and which is carried out using tower crane
Although construction avoids the use of full framing, its construction procedure is complicated, needs huge operation platform just complete to apply
Work, duration are longer.
Content of the invention
This method purpose is that the tower body buttress construction procedure of cooling tower in above-mentioned prior art is loaded down with trivial details, operation platform in order to solve
Greatly, shortcoming long in time limit and propose a kind of application external prestressing technique cooling tower X inclined strut segmentation self-balancing construction party
Method.
The present invention is adopted the technical scheme that by solving the above problems：
A kind of cooling tower X inclined strut segmentation self-balancing construction method, comprises the following steps：
Step A：First m section construction point is divided into by bottom-up for X inclined strut according to the height of cooling tower and Practical Project
Section, wherein m are non-zero natural number；
Step B：Then according to formulaDetermine when construction the i-th section construction segmentation
When, required steel strand wires radical, determine the anchor point of steel strand wires, the upper end of the steel strand wires is anchored at construction segmentation medial surface
Template on, the lower end of steel strand wires be fixed on basis, and provide tension force by stretch-draw jack to steel strand wires and carry out
Draw, the steel strand wires are located at the outside of X inclined strut；Wherein, k is safety coefficient, 0.5≤k≤0.8；I=1,2 ..., m；N is the
Steel strand wires radical needed in i section construction segmentation；J=1,2 ..., n；fijTensile strength for jth root steel strand wires；AijFor jth root
The sectional area of steel strand wires；dijFor X inclined strut with basis tie point to jth root steel strand wires distance；N is to apply when the i-th section of construction
During work point section, the total load head of X inclined strut；L is the total length of X inclined strut when the i-th section of constructing constructs segmentation；α is X inclined strut
Angle between horizontal plane；
Step C：According to step B calculate in advance construction first segment construct segmentation when required steel strand wires radical and its corresponding
Anchor point, and prestressing force is provided using stretch-draw jack；Then often increase and first calculate what needs were set up in advance once section construction segmentation
Steel strand wires radical and its corresponding anchor point, and prestressing force is provided using stretch-draw jack；Until whole X inclined strut has been constructed
Bi Hou, after waiting concrete to reach respective strengths, all steel strand wires is removed.
Preferably, in stepb, the N is the total load head of X inclined strut when the i-th section of constructing constructs segmentation, oblique including X
Pillar deadweight, the deadweight of template flitch, construction loads and dynamic loads, the dynamic loads are vibrated concrete load and topple over mixed
The greater in solidifying soil both loads.
The present invention had the advantage that for：X inclined strut construction carried out by this method, it is to avoid under X inclined strut
Side sets up scaffold, and cost has been saved in the use so as to effectively reduce steel, eliminates original work high above the ground for construction
Personnel are safer, shorten construction period；While this method only need to expand the basis below X inclined strut so as to as body steel
The anchor point of twisted wire, provides prestressing force will pass through stretch-draw jack, and steel strand wires sleeve pipe and anchorage arrangement are simple, and adjustment is easy,
And steel strand wires are arranged in outside X inclined strut, pouring for concrete is not interfered with.
Description of the drawings
Fig. 1 is the perspective view of a repetitive in X inclined strut.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further described.
As shown in figure 1, the present invention is comprised the following steps：
Step A：First m section construction point is divided into by bottom-up for X inclined strut according to the height of cooling tower and Practical Project
Section 2, wherein m are non-zero natural number；
Step B：Then according to formulaDetermine when construction the i-th section construction segmentation
When 2, required 3 radical of steel strand wires and its corresponding anchor point, the upper end of the steel strand wires 3 are anchored at 2 inner side of construction segmentation
In the template in face, construction segmentation 2 be inwardly roll oblique, the lower end of steel strand wires 3 be fixed on basis 4 on, and pass through tensioning
Jack 5 provides tension force to steel strand wires 3 and carries out tensioning, and the steel strand wires 2 are located at the lateral surface of X inclined strut 6；Wherein, k is safety
Coefficient, 0.5≤k≤0.8；I=1,2 ..., m；N 3 radical of steel strand wires for needed in the i-th section construction segmentation 2；J=1,2 ..., n；
fijTensile strength for jth root steel strand wires 3；AijSectional area for jth root steel strand wires 3；dijFor X inclined strut 6 and basic connection
Point O is to the distance of jth root steel strand wires 3；N is the total load head of X inclined strut 6 when the i-th section of constructing constructs segmentation 2；L is to work as construction
During the i-th section construction segmentation 2, the total length of X inclined strut 6；α is the angle between X inclined strut 6 and horizontal plane；
Step C：According to step B calculate in advance construction first segment construct segmentation when required 3 radical of steel strand wires and its corresponding
Anchor point, and using stretch-draw jack 5 provide prestressing force；Then often increase first calculates needs in advance once section construction segmentation and sets up
3 radical of steel strand wires and its corresponding anchor point, and using stretch-draw jack 5 provide prestressing force；Until by whole X inclined strut 6
After construction is finished, after waiting concrete to reach respective strengths, all steel strand wires 3 are removed.
In stepb, the N is that the total load head of X inclined strut 6, including X inclined strut 6 when the i-th section of constructing constructs segmentation 2
Deadweight, the deadweight of template flitch and dynamic loads, the dynamic loads are vibrated concrete load and topple over concrete load
Middle the greater.
In the present embodiment, the upper end of steel strand wires 3 be anchored at construction 2 medial surface of segmentation template on, X inclined strut 6 be to
Tilted, work progress is：Template, assembling reinforcement, casting concrete is set up, therefore, 3 upper end of steel strand wires can only be anchored at
In the template of construction 2 medial surface of segmentation.
X inclined strut construction is carried out by this method, it is to avoid below X inclined strut, scaffold is set up, so as to effectively reduce
Cost has been saved in the use of steel, and it is safer for workmen to eliminate original work high above the ground, shortens construction week
Phase；This method only need to expand the basis of 6 lower section of X inclined strut 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 sleeve pipe of steel strand wires and anchorage arrangement are simple, adjust easily, and steel strand wires 3 are arranged in X inclined strut
Outside 6, pouring for concrete is not interfered with.
Finally it should be noted that：Above example only in order to technical scheme to be described, rather than a limitation；Although
With reference to the foregoing embodiments the present invention is described in detail, it will be understood by those within the art that：Which still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic,
But these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (2)
1. a kind of cooling tower X inclined strut segmentation self-balancing construction method, it is characterised in that comprise the following steps：
Step A：First m section construction segmentation is divided into by bottom-up for X inclined strut according to the height of cooling tower and Practical Project, its
Middle m is non-zero natural number；
Step B：Then according to formulaDetermine when the i-th section of constructing constructs segmentation, institute
The steel strand wires radical of needs, the anchor point of determination and steel strand wires, the upper end of the steel strand wires are anchored at construction segmentation medial surface
In template, the lower end of steel strand wires be fixed on basis, and by stretch-draw jack to steel strand wires provide tension force carry out tensioning,
The steel strand wires are located at the outside of X inclined strut；Wherein, k is safety coefficient, 0.5≤k≤0.8；I=1,2 ..., m；N is the i-th section
Steel strand wires radical needed in construction segmentation；J=1,2 ..., n；fijTensile strength for jth root steel strand wires；AijTwist for jth root steel
The sectional area of line；dijFor X inclined strut with basis tie point to jth root steel strand wires distance；N is to divide when construction the i-th section construction
The total load head of Duan Shi, X inclined strut；L is the total length of X inclined strut when the i-th section of constructing constructs segmentation；α is X inclined strut and water
Angle between plane；
Step C：When constructing first segment construction segmentation required steel strand wires radical and its corresponding anchoring are calculated according to step B in advance
Point, and prestressing force is provided using stretch-draw jack；Then often increasing first to calculate in advance once section construction segmentation needs the steel that sets up to twist
Line radical and its corresponding anchor point, and prestressing force is provided using stretch-draw jack；Until the construction of whole X inclined strut is finished
Afterwards, after waiting concrete to reach respective strengths, all steel strand wires are removed.
2. cooling tower X inclined strut segmentation self-balancing construction method according to claim 1, it is characterised in that in step B
In, the N is the total load head of X inclined strut when the i-th section of constructing constructs segmentation, conduct oneself with dignity including the deadweight of X inclined strut, template flitch,
Construction loads and dynamic loads, the dynamic loads are vibrated concrete load and topple over the greater in concrete load.
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 |
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| CN106481109A true CN106481109A (en) | 2017-03-08 |
| CN106481109B CN106481109B (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108151A (en) * | 2019-05-30 | 2019-08-09 | 中国电力工程顾问集团西北电力设计院有限公司 | Cooling stack and its reinforced steel pipe concrete X pillar |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388785A (en) * | 1979-07-24 | 1983-06-21 | Electricite De France (Service National) | Cooling towers |
| CN103397780A (en) * | 2013-08-09 | 2013-11-20 | 四川电力建设三公司 | Air cooling tower X-shaped pillar 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
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4388785A (en) * | 1979-07-24 | 1983-06-21 | Electricite De France (Service National) | Cooling towers |
| CN103397780A (en) * | 2013-08-09 | 2013-11-20 | 四川电力建设三公司 | Air cooling tower X-shaped pillar 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110108151A (en) * | 2019-05-30 | 2019-08-09 | 中国电力工程顾问集团西北电力设计院有限公司 | Cooling stack and its reinforced steel pipe concrete X pillar |
| 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 |
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| Publication number | Publication date |
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| CN106481109B (en) | 2018-10-02 |
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Granted publication date: 20181002 Termination date: 20191117 |