CN109235899A - Rope branch dome method for applying prestressing force - Google Patents
Rope branch dome method for applying prestressing force Download PDFInfo
- Publication number
- CN109235899A CN109235899A CN201811162321.6A CN201811162321A CN109235899A CN 109235899 A CN109235899 A CN 109235899A CN 201811162321 A CN201811162321 A CN 201811162321A CN 109235899 A CN109235899 A CN 109235899A
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- CN
- China
- Prior art keywords
- outer ring
- oblique cord
- ring strut
- cover plate
- strop
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
Rope branch dome method for applying prestressing force, is related to building field.The applying method is the following steps are included: install sliding sleeve in the tie point of outer oblique cord and outer strop, the lower end of outer ring strut passes through sliding sleeve, connect outer oblique cord, outer strop by sliding sleeve with outer ring strut, and according to the exposed size in lower end that the geometric dimension of dome calculates outer ring strut；Outer notochord is installed by the traction of jack cucurbit；Tooling is shifted, outer oblique cord is drawn by jack cucurbit and is installed in place；Promote outer ring strut；When outer ring strut is close to design position, outer ring strut is jacked using separated type hydraulic jack, realizes the application of construction pre-stress.This method realizes that structural elements installation is in place by reducing the height of outer ring strut with small pulling force, then realizes prestressed application larger to structure by jacking outer ring strut.
Description
Technical field
The present invention relates to building field more particularly to a kind of rope branch dome method for applying prestressing force.
Background technique
Existing rope branch dome realizes that the installation of rope branch structure is applied with construction pre-stress in place by the outer oblique cord of synchronous tension
Add, the process of installation is also the process of prestress application simultaneously.Therefore the construction method only needs to overcome structure certainly in the initial stage
Internal force caused by weight, required stretching force are smaller；And last outer oblique cord close to installation site when must be simultaneously achieved component
In place and construction pre-stress applies, required stretching force but very greatly (between 100~300 tons, even more greatly), existing construction
The common a large amount of big pulling force punching jack of method and the interim auxiliary steel wire rope of a large amount of major diameter are by complicated Electromechanical Control essence
True synchronous tension is implemented, very high to synchronous precise requirements, and otherwise part can generate very big pulling force, takes a lot of work laborious, Er Qiexu
Want a large amount of skilled operation worker.
Summary of the invention
It is an object of the invention to solve the above problem in the prior art, rope branch dome method for applying prestressing force is provided,
This method realizes that structural elements installation is in place by reducing the height of outer ring strut with small pulling force, then real by jacking outer ring strut
Prestressed application now larger to structure.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
Rope branch dome method for applying prestressing force, the rope branch dome include outer oblique cord, outer notochord, outer ring strut, outer strop and
Pressure rings truss；One end of outer notochord is connected with the top of outer ring strut, and one end of outer oblique cord and outer strop are set to outer ring strut
Bottom, method includes the following steps:
Step 1 installs sliding sleeve in the tie point of outer oblique cord and outer strop, and the lower end of outer ring strut passes through sliding sleeve
Pipe, connects outer oblique cord, outer strop by sliding sleeve with outer ring strut, and calculate outer central shoring according to the geometric dimension of dome
The exposed size in the lower end of bar；
Step 2 installs outer notochord by the traction of jack cucurbit, makes the other end of outer notochord and phase at the top of pressure rings truss
Even, outer notochord installation is in place；
Step 3, transfer tooling, draw outer oblique cord by jack cucurbit, make the other end and the pressure rings truss top of outer oblique cord
Portion is connected, and outer oblique cord installation is in place；
Step 4 promotes outer ring strut using cucurbit chest expander；
When step 5, outer ring strut are close to design position, outer ring strut is jacked using separated type hydraulic jack, realizes knot
The prestressed application of structure；
Step 6 is fixedly connected with the bottom of pull rod key screw outer ring strut and sliding sleeve, is finally withdrawn from interim anti-
Power frame and separated type hydraulic jack, pre-stress construction terminate.
The sliding sleeve includes lower cover plate, upper cover plate and oblique cord connecting plate, upper cover plate, lower cover plate and oblique cord connecting plate phase
It mutually is fixedly connected to form a cavity trapezium structure, upper cover plate and lower cover plate are respectively trapezoidal upper bottom and bottom, oblique cord connecting plate
For trapezoidal front and back two sides；Outer strop is fixed on the bottom of oblique cord connecting plate by lower cover plate, and outer oblique cord is fixed on oblique cord connection
On plate, the trapezoidal middle part that upper cover plate and lower cover plate are formed is equipped with cavity, and the lower end of the outer ring strut passes through cavity and can be
It is slided up and down in cavity.
The oblique cord connecting plate bottom is equipped with card slot, and the outer strop is fixed on the card slot of oblique cord connecting plate by lower cover plate
In.
The radical of the outer oblique cord is 2, and outer oblique cord is symmetrically set in the two sides of oblique cord connecting plate.
The bottom of the outer ring strut is equipped with supporting plate, and separated type hydraulic jack is set to the lower section of outer ring strut and by facing
When reaction frame contact supporting plate.
In step 6, the upper cover plate on the supporting plate and sliding sleeve of outer ring strut bottom connects using pull rod screw is fixed
It connects.
Compared with the existing technology, the beneficial effect that technical solution of the present invention obtains is:
1, the external oblique cord of current rope branch dome applies prestressing force and passes through the realization of large-tonnage punching jack tension, punching thousand
Jin top is from great, and when use is suspended from high-altitude, and auxiliary group of component is more, complicated for operation, higher cost, and this punching jack is city
The uncommon unit in charge of construction in face is of little use.And the present invention is jacked using the common cheap separated type hydraulic jack in market,
Prestressed application can be realized in simple jacking, and purchases conveniently, economical and practical.
2, very low to synchronous precise requirements when entirety is promoted due to installing required pulling force very little in place, site operation letter
Easy row is reliable, and economic benefit is obvious, and easy to operate, and common laborer's simple technique is told somebody what one's real intentions are the construction that can be on duty.
3, by two oblique cord connecting plates of setting can cavity construction easy to accomplish, outer ring strut, which passes through cavity, can go up downslide
Dynamic, entire node forms sliding sleeve；On the other hand, outer strop is fixed on own card slot by lower cover plate by the oblique cord connecting plate of two sides
In, the horizontal force of outer strop passes to oblique cord connecting plate by card slot, and directly against the horizontal force of oblique cord, structure power transmission is simply bright
, the component of sliding sleeve is simple for production；Moreover, common medium plate can be used in diclinic rope connection plate structure, and using normal
The accurate processing at the positions such as card slot can be realized in rule Numerical control cutting, time saving and energy saving reliable.
4, the outer strop is fixed in the card slot at oblique cord connecting plate bottom by lower cover plate, is subjected only to the outer ring strut of pressure
By card slot directly " riding pressure ", on outer strop, pressure directly passes through card slot and passes to oblique cord connecting plate, and the construction is so as to big
The installation and fixation of the outer strop of pulling force all become simple and reliable.
5, the present invention can be according to the exposed size in lower end that the geometric dimension of dome calculates outer ring strut, which can
The high-end rope head of outer oblique cord is installed easily in place.
6, outer oblique cord no longer needs length adjustment accessory (gaily decorated basket etc.), directly the connection of fork ear, saves rigging cost.
Detailed description of the invention
Fig. 1 is the planar structure schematic diagram of rope branch dome of the present invention；
Fig. 2 is the schematic cross-sectional view of rope branch dome；
Fig. 3 is the portion the A enlarged diagram in Fig. 2；
Fig. 4 is the portion the B enlarged diagram in Fig. 2；
Fig. 5 is the portion the C enlarged diagram in Fig. 2；
Fig. 6 is one of sliding sleeve schematic front view；
Fig. 7 is the two of sliding sleeve schematic front view；
Fig. 8 is sliding sleeve schematic top plan view；
Fig. 9 is the structural schematic diagram of oblique cord connecting plate；
Figure 10 is one of rope branch dome prestress application schematic diagram；
Figure 11 is the two of rope branch dome prestress application schematic diagram；
Figure 12 is the three of rope branch dome prestress application schematic diagram；
Figure 13 is the four of rope branch dome prestress application schematic diagram.
Detailed description of the invention: outer ring column 1, pressure rings truss 2, interior oblique cord 31, middle oblique cord 32, outer oblique cord 33, inner ring strut 41,
Middle ring strut 42, outer ring strut 43, interior strop 51, middle strop 52, outer strop 53, upper strop 6, interior notochord 71, middle notochord 72, outside
Notochord 73, sliding sleeve 8, upper cover plate 81, lower cover plate 82, oblique cord connecting plate 83, card slot 831, supporting plate 431, separation type hydraulic thousand
Jin top 9, interim reaction frame 91.
Specific embodiment
In order to be clearer and more clear technical problems, technical solutions and advantages to be solved, tie below
Drawings and examples are closed, the present invention is described in further details.
As shown in Fig. 1~5, rope branch dome include outer ring column 1, pressure rings truss 2, interior oblique cord 31, middle oblique cord 32, it is outer tiltedly
Rope 33, inner ring strut 41, middle ring strut 42, outer ring strut 43, interior strop 51, middle strop 52, outer strop 53, upper strop 6, interior ridge
Rope 71, middle notochord 72 and outer notochord 73；
Pressure rings truss 2 is connect with outer ring column 1, and pressure rings truss 2 is circular trigonometric lattice truss；
One end of interior oblique cord 31 is connected with 41 bottom of inner ring strut, the other end and the 42 top phase of middle ring strut of interior oblique cord 31
Even, at the top of the weight of inner ring and load transmission to middle ring strut 42；
One end of middle oblique cord 32 is connected with 42 bottom of middle ring strut, the other end and the 43 top phase of outer ring strut of middle oblique cord 32
Even, at the top of the weight of middle ring and inner ring and load transmission to outer ring strut 43；
One end of outer oblique cord 33 is connected with 43 bottom of outer ring strut, 2 top of the other end and pressure rings truss of outer oblique cord 33
It is connected, the weight and load transmission of inner ring, middle ring and outer ring is changed truss to pressure；
Strut bottom is linked to be a circle by the strop (middle strop 52, outer strop 53 and upper strop 6) of each strut bottom, is resisted oblique
The horizontal force that rope generates, while guaranteeing the lateral stability of strut bottom；
Upper strop 6 guarantees the balance at the top of each strut a circle is linked to be at the top of each strut；
It is connected at the top of one end of interior notochord 71 and inner ring strut 41, the other end and the 42 top phase of middle ring strut of interior notochord 71
Even, guarantee to balance at the top of inner ring strut 41；
It is connected at the top of one end of middle notochord 72 and middle ring strut 42, the other end and the 43 top phase of outer ring strut of middle notochord 72
Even, guarantee to balance at the top of middle ring strut 42；
It is connected at the top of one end of outer notochord 73 and outer ring strut 43,2 top of the other end and pressure rings truss of outer notochord 73
It is connected, guarantees to balance at the top of outer ring strut 43.
As shown in Fig. 6~9, sliding sleeve 8 include lower cover plate 82, upper cover plate 81 and oblique cord connecting plate 83, upper cover plate 81, under
Cover board 82 and oblique cord connecting plate 83 are mutually permanently connected to form a cavity trapezium structure, and upper cover plate 81 and lower cover plate 82 are respectively ladder
The upper bottom of shape and bottom, oblique cord connecting plate 83 are trapezoidal front and back two sides；83 bottom of oblique cord connecting plate is equipped with card slot 831；
Outer strop 53 is fixed in the card slot 831 of 83 bottom of oblique cord connecting plate by lower cover plate 82, and outer oblique cord 33 is fixed on
On oblique cord connecting plate 83, the trapezoidal middle part that upper cover plate 81 and lower cover plate 82 are formed is equipped with cavity, under the outer ring strut 43
End is across cavity and can slide up and down in cavity.
The radical of the outer oblique cord 33 of the present invention is 2, and outer oblique cord 33 is symmetrically set in the two sides of oblique cord connecting plate 83.
The bottom of outer ring strut 43 is equipped with supporting plate 431, and separated type hydraulic jack 9 is set to the lower section of outer ring strut 43 and leads to
Cross interim 91 contact supporting plate 431 of reaction frame.
By external oblique cord 33 apply prestressing force, structure can be allowed integrally tight, generate the rigidity of structure, with bear wind, rain,
The external loads such as snow.
As shown in Figure 10~13, method for applying prestressing force of the invention is as follows:
Step 1 installs sliding sleeve 8 in the tie point of outer oblique cord 33 and outer strop 53, and the lower end of outer ring strut 43 passes through
Sliding sleeve 8 connects outer oblique cord 33, outer strop 53 and outer ring strut 43 by sliding sleeve 8, and according to the dimensioning of dome
The very little exposed size in lower end for calculating outer ring strut 43, so that the pulling force of outer notochord 73 and outer oblique cord 33 only needs gram when installing in place
Taking internal force caused by dead load can be realized installation in place；
Step 2 installs outer notochord 73 by the traction of jack cucurbit, pushes up the other end of outer notochord 73 and pressure rings truss 2
Portion is connected, and outer notochord 73 is installed in place；
Step 3, transfer tooling, draw outer oblique cord 33 by jack cucurbit, make the other end and the pressure rings purlin of outer oblique cord 33
It is connected at the top of frame 2, outer oblique cord 33 is installed in place；
Step 4, the bottom end that outer ring strut 43 is promoted using cucurbit chest expander, to realize small prestressed fast application；
When step 5, outer ring strut 43 are close to design position, since structural internal force is very big, using separated type hydraulic jack 9
Gradually jacking jacking outer ring strut 43, realizes the application of construction pre-stress；
Step 6 is carried out with the upper cover plate 81 on the supporting plate 431 and sliding sleeve 8 of 43 bottom of pull rod key screw outer ring strut
It is fixedly connected, finally withdraws from interim reaction frame 91 and separated type hydraulic jack 9, pre-stress construction terminates.
The angle of outer oblique cord 33 and outer ring strut 43 is usually less than 45 °, every 1 ton of top lift can be generated in outer oblique cord 33 to
Few 1.414 tons of pretensions.Building-site by ordinary jack can the even greater jacking force of the several hundred tons of simple realization, accordingly
The pulling force of numerical value is then very unlikely to realize or cost is very high.
Claims (7)
1. rope branch dome method for applying prestressing force, which includes outer oblique cord, outer notochord, outer ring strut, outer strop and pressure
Power ring truss；One end of outer notochord is connected with the top of outer ring strut, and one end of outer oblique cord and outer strop are set to outer ring strut
Bottom, it is characterised in that: the following steps are included:
Step 1 installs sliding sleeve in the tie point of outer oblique cord and outer strop, and the lower end of outer ring strut passes through sliding sleeve, makes
Outer oblique cord, outer strop and outer ring strut are connected by sliding sleeve, and calculate outer ring strut according to the geometric dimension of dome
The exposed size in lower end；
Step 2 installs outer notochord by the traction of jack cucurbit, makes to be connected at the top of the other end of outer notochord and pressure rings truss, outside
Notochord installation is in place；
Step 3, transfer tooling, draw outer oblique cord by jack cucurbit, make the other end of outer oblique cord and phase at the top of pressure rings truss
Even, outer oblique cord installation is in place；
Step 4 promotes outer ring strut；
When step 5, outer ring strut are close to design position, outer ring strut is jacked using separated type hydraulic jack, realizes that structure is pre-
The application of stress；
Step 6 is fixedly connected with the bottom of pull rod key screw outer ring strut and sliding sleeve, finally withdraws from interim reaction frame
And separated type hydraulic jack, pre-stress construction terminate.
2. rope branch dome method for applying prestressing force as described in claim 1, it is characterised in that: the sliding sleeve includes lower cover
Plate, upper cover plate and oblique cord connecting plate, upper cover plate, lower cover plate and oblique cord connecting plate are mutually permanently connected to form the trapezoidal knot of a cavity
Structure, upper cover plate and lower cover plate are respectively trapezoidal upper bottom and bottom, and oblique cord connecting plate is trapezoidal front and back two sides；Outer strop passes through
Lower cover plate is fixed on the bottom of oblique cord connecting plate, and outer oblique cord is fixed on oblique cord connecting plate, the ladder that upper cover plate and lower cover plate are formed
The middle part of shape is equipped with cavity, and the lower end of the outer ring strut passes through cavity and can slide up and down in cavity.
3. rope branch dome method for applying prestressing force as claimed in claim 2, it is characterised in that: the oblique cord connecting plate bottom is set
There is card slot, the outer strop is fixed in the card slot of oblique cord connecting plate by lower cover plate.
4. rope branch dome method for applying prestressing force as claimed in claim 2, it is characterised in that: the radical of the outer oblique cord is 2,
Outer oblique cord is symmetrically set in the two sides of oblique cord connecting plate.
5. rope branch dome method for applying prestressing force as claimed in claim 2, it is characterised in that: the bottom of the outer ring strut is set
There is supporting plate, separated type hydraulic jack is set to the lower section of outer ring strut and passes through interim reaction frame contact supporting plate.
6. rope branch dome method for applying prestressing force as claimed in claim 5, it is characterised in that: in step 6, the supporting plate and cunning
Upper cover plate on dynamic casing is fixedly connected using pull rod screw.
7. rope branch dome method for applying prestressing force as described in claim 1, it is characterised in that: in step 4, using cucurbit pulling force
Device promotes outer ring strut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162321.6A CN109235899A (en) | 2018-09-30 | 2018-09-30 | Rope branch dome method for applying prestressing force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811162321.6A CN109235899A (en) | 2018-09-30 | 2018-09-30 | Rope branch dome method for applying prestressing force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109235899A true CN109235899A (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811162321.6A Pending CN109235899A (en) | 2018-09-30 | 2018-09-30 | Rope branch dome method for applying prestressing force |
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| CN (1) | CN109235899A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424989A (en) * | 2020-03-13 | 2020-07-17 | 中建科工集团有限公司 | Tension construction method and construction tool for steel pull rod of net rack |
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2018
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| WO2012032366A1 (en) * | 2010-09-10 | 2012-03-15 | Kolozsvary-Kiss Arpad | Membrane roofs suspended over moment free arches |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111424989A (en) * | 2020-03-13 | 2020-07-17 | 中建科工集团有限公司 | Tension construction method and construction tool for steel pull rod of net rack |
| CN111424989B (en) * | 2020-03-13 | 2021-09-14 | 中建科工集团有限公司 | Tension construction method and construction tool for steel pull rod of net rack |
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Application publication date: 20190118 |
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