CN205530902U - Whole over -and -under type steel truss of circular cone roofing - Google Patents
Whole over -and -under type steel truss of circular cone roofing Download PDFInfo
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- CN205530902U CN205530902U CN201620309655.1U CN201620309655U CN205530902U CN 205530902 U CN205530902 U CN 205530902U CN 201620309655 U CN201620309655 U CN 201620309655U CN 205530902 U CN205530902 U CN 205530902U
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Abstract
The utility model discloses a whole over -and -under type steel truss of circular cone roofing, this steel truss mainly comprise central disc (1), mobile jib frame (2), the member of reaching the standard grade (3), last quarter member (4), pull rod (5) and bracing member (16) etc.. Its construction method includes following step: truss design and processing, the truss equipment, the first integrally lift up 2m of truss, installation truss lower part operation gallows, the truss promotes, installation bracket and firm with truss connection, set up truss top support frame backup pad, assembling reinforcement, the concrete is poured. It drives and removes to treat to carry on the truss after concrete intensity reaches 100%. This whole over -and -under type steel truss time limit for a project effect is obvious, and the steel truss has replaced full hall support frame, a large amount of inputs of reducing the turnover material with set up. The installation of steel truss and to demolish technology succinct, easily operation. The steel truss still has once and to drop into, the characteristics of turnover many times.
Description
Technical field
This utility model relates to a kind of circular cone roofing integrally-lifting steel truss, belongs to construction engineering technical field.
Background technology
The design in state grain reserve storehouse, uses silo structure mostly, it is simple to Slip Form Construction Technique is applied, and Roof Design does not has
Specific requirement, uses pyramid type, shaped form, corresponding roofing construction not to have uniform requirement, common roof support frame to execute mostly
Work method has: set up bracing frame and the steel truss construction method as bracing frame on full hall bracing frame, steel platform.
Integral Steel truss is according to a kind of support system of taper roofing feature design, by truss main body, truss lifting, props up
Support structure forms.It is characterized in, designs a steel truss, the loads such as template, concrete, reinforcing bar are passed to support by steel truss
On bracket.Work progress is: staff abandons steel loading truss on the base plate of storehouse, and truss is abandoned after installing into, overall with electric block
Being promoted to bracket position, install bracket, truss sets up support, formwork supporting plate, tie up reinforcing bar, cast concrete, concrete reaches to set
Entire lowering steel truss after meter intensity, base plate is removed steel truss.This engineering method has bigger development potentiality.
Utility model content
The purpose of this utility model is to provide a kind of circular cone roofing integrally-lifting steel truss, makes circular cone roofing entirety liter
Fall formula steel truss structure reasonable stress, construction is simple, be prone to behaviour does, to overcome the deficiencies in the prior art.
The technical solution of the utility model is such that
This utility model first proposed a kind of circular cone roofing integrally-lifting steel truss, and it includes center disk, center
Disk be arranged over a collar plate shape superstructure, the diameter of this collar plate shape superstructure is more than the diameter of center disk, this collar plate shape building
The projection in center disk of the center of circle of lid overlaps with the center of circle of center disk；Collar plate shape superstructure side semi-circular portions in
Heart disk extends some main rod hanger in the plane, and main rod hanger with the line in collar plate shape superstructure and the center of circle of center disk is
Axle is the uniform setting of hoop；Opposite side semi-circular portions at collar plate shape superstructure extends some in the plane to center disk
The upper cord member corresponding with the main rod hanger of offside；Described main rod hanger is connected in the plane at center disk place with upper cord member
Point constitutes a complete big disk, and the diameter of this big disk is more than the diameter of collar plate shape superstructure；Above three disk and connection
Their main rod hanger, upper cord member and other connecting rod together constitute the structure of circular cone roofing integrally-lifting steel truss.
Wherein, other connecting rod at least includes the lower edge rod member for connecting big disk and center disk, for connecting
Main rod hanger and the pull bar of center disk, for connecting the diagonal brace hack lever of center disk and collar plate shape superstructure.
The construction of this circular cone roofing integrally-lifting steel truss is used for the roofing construction of different-diameter cone silo,
This engineering method comprises the steps: Truss Design and processing；Truss assembling；Truss is overall for the first time promotes 2m；Truss bottom behaviour is installed
Make suspension bracket；Truss promotes；Bracket is installed and is connected firmly with truss；Set up truss upper support frame gripper shoe, assembling reinforcement；Pour
Concrete；After concrete strength reaches 100%, carry out truss drive and remove.
Wherein, after circle storehouse, storehouse tube construction completes, steel truss is assembled at storehouse tube end plate；With the silo out-mould scaffold set up in advance
Frame support gutter template, as operating platform, is installed lifting calabash steel structure suspender, is installed lifting electronic on shallow cylinder bulkhead top
Calabash, and supporting lifting calabash connecting cable and master control case；Utilize electronic lifting calabash that truss is risen to designed elevation
After, steel truss is connected fixing with bracket, and truss has lifted；Completing after concreting reaches design strength, steel structure truss is torn open
Except using electric block, the steel hinge of electric block both passes through top, storehouse roof boarding preformed hole, is connected firmly with steel construction support body and protects
Hold the balance of steel construction support body, steel truss is drop to manual demolition after silo base surface.
Wherein, carry out as follows during truss assembling: steel truss transports to job site after machining, carry out rechecking,
Numbering, utilizes tower crane that truss loose mail hangs in cone silo inner bottom plating, installs in the following order: reinforce hack lever → master
Hack lever → diagonal brace hack lever → center disk → pull bar.
Wherein, carry out as follows when bracket being installed and is connected firmly with truss: utilize silo gutter to take when constructing
If external scaffolding operate platform, lifting calabash suspender and supporting lifting calabash connecting cable and total are installed on silo wall top
Control chamber, utilizes suspension bracket below external scaffolding and steel truss to install bracket at bulkhead reserved location.
Integral Steel truss of the present utility model is according to a kind of support system of taper roofing feature design, by truss master
The lifting of body, truss, supporting construction composition.It is characterized in, designs a steel truss, the loads such as template, concrete, reinforcing bar are passed through
Steel truss passes to support on bracket.Work progress is: staff abandons steel loading truss on the base plate of storehouse, and truss is abandoned after installing into,
Overall increase to bracket position with electric block, bracket is installed, truss sets up support, formwork supporting plate, tie up reinforcing bar, cast coagulation
Soil, concrete reaches entire lowering steel truss after design strength, and base plate is removed steel truss.This engineering method has structure stress and closes
Reason, simple, be prone to behaviour and do.
This utility model has the following technical effect that
First, the processing of integrally-lifting steel truss early stage is not take up the direct duration, and steel truss is installed, dismounting takies a small amount of work
Phase, duration effect is obvious.
Secondly, steel truss instead of full hall bracing frame, reduces putting in a large number and setting up of circulation material, and steel truss adds man-hour
Just determining the gradient of roofing, construction quality is readily obtained guarantee.
Again, steel truss installation and remove concise in technology, it is easy to operation.
Finally, steel truss has and once puts into, the feature repeatedly having enough to meet the need, the construction work cost to multiple cone roofings
Reduce notable, have good social benefit and development prospect.
Accompanying drawing explanation
Fig. 1 is steel truss elevation of the present utility model；
Fig. 2 is that steel truss of the present utility model winds up plane graph；
Fig. 3 is steel truss lower edge plane graph of the present utility model；
Fig. 4 is suspender and fixture installation diagram during bracket installation；
Fig. 5 is suspender and suspender side view during bracket installation；
Fig. 6 is suspender and bracket installation diagram during bracket installation；
Fig. 7 is to unload electric block girder steel sectional view during steel truss dismounting；
Fig. 8 is to unload electric block girder steel plane graph during steel truss dismounting.
Description of reference numerals: 1-center disk, 2-main rod hanger, 3-upper cord member, 4-lower edge rod member, 5-pull bar, 6-silo
Wall, 7-channel-section steel, 8-reserves lifting hole(eyelet), 9-fixture bolt, 10-high-strength bolt, 11-lifting hole(eyelet), 12-fixation steel plate, 13-I-steel, 14-
Reserved opening, 15-roof plate of silo, 16-diagonal brace hack lever.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Show the elevation of this steel truss of the present utility model referring initially to Fig. 1, Fig. 1, Fig. 2 and Fig. 3 respectively show this steel
Winding up and lower edge plane graph of truss.From figure 1 it appears that a kind of circular cone roofing integrally-lifting steel truss, during it includes
Heart disk 1, center disk 1 be arranged over a collar plate shape superstructure, straight more than center disk 1 of the diameter of this collar plate shape superstructure
Footpath, the projection in center disk 1 of the center of circle of this collar plate shape superstructure overlaps with the center of circle of center disk 1；At collar plate shape superstructure
Side semi-circular portions extends some main rod hanger 2 in the plane to center disk 1, main rod hanger 2 with collar plate shape superstructure and in
The line in the center of circle of heart disk 1 be axle be the uniform setting of hoop；In the opposite side semi-circular portions of collar plate shape superstructure to center disk 1
Extend the some upper cord members 3 corresponding with the main rod hanger 2 of offside in the plane；Described main rod hanger 2 and upper cord member 3
In the plane at center disk 1 place, junction point constitutes a complete big disk, and the diameter of this big disk is more than collar plate shape building
The diameter of lid；Above three disk and connect their main rod hanger 2, upper cord member 3 and other connecting rod and together constitute circle
The structure of cone roofing integrally-lifting steel truss.Wherein, other connecting rod at least includes for connecting big disk and center circle
The lower edge rod member 4 of dish 1, for connecting the pull bar 5 of main rod hanger 2 and center disk 1, for connecting center disk 1 and collar plate shape building
The diagonal brace hack lever 16 of lid.
Embodiment 1:
China Construction Fourth Engineering Bureau Ltd. undertakes the construction of the construction directly under storehouse of the state grain reserve Kunming, and this project is positioned at elder brother
Section, green hill, industrial park, Ming Shi Jinning County, is made up of 12 internal diameter 25m silos and conveyance system thereof, and capacity reserves are 100,000
The silo (single seat silo reserves are 8350 tons) of ton, silo top is armored concrete pyramid type roofing, and 200 millimeters thick reinforcing bars mix
Solidifying earth house panel, roofing top mark height 32.97m.Integrally-lifting steel truss of the present utility model is used more afterwards in multiple schemes
Frame, as aspect form bracing system, is completed by the enforcement of the tapered roofing in 12 storehouses.
One, sequence of construction and main method
(1), steel truss G-Design
1. steel truss is designed according to the actual features of engineering, including the size of center disk 1, the length of diagonal brace hack lever 16
Degree and specification, the length of body frame bar 2 and specification, the length of pull bar 5 and specification etc..Consider during design that circle storehouse diameter, cone are high
Degree, the thickness of roofing concrete, it is ensured that truss meets safety in work progress, and saves the consumption of steel as far as possible.
2. calculate instrument, load case and computation model
2.1 calculate instrument
This engineering method uses finite element software MIDAS to be modeled analyzing, and software has the intensity to structure, and rigidity is with stable
Property be analyzed calculate, close and instability modes figure, and load can be seen in the process in later stage----displacement deformation process with
Track curve.
2.2 load case
Design concrete load calculates:
[2.238/40.698 × 3.14 × 4.512 × (9.022+9.02 × 3.25+3.252)/3+10.337+22.55]
×24/491=3.12kN/m2
Reinforcing bar load calculates: 35 × 10/491=0.71kN/m2
Design supporting frame load calculates: 1407 × 0.0358/491=0.11kN/m2
Design template flitch load calculates
615.99×0.085/491=0.11kN/m2
Design and construction load (without concrete weight) 2.5kN/m2
Design total load head: q=1.2 × (3.12+0.71+0.11+0.11)+1.4 × 2.5=8.36kN/m2, take 9kN/m2Meter
Calculate.
Construction temporary facility, does not calculate strong wind and geological process.
Structure is arranged as upper and lower two annulus, up-small and down-big, connects with radially shaped steel, form round platform system between annulus, whole
Individual structure divides 20 symmetrical cell, adds that tie-strut constitutes stabilising system.
2.3 computation model
By above-mentioned Finite element analysis results it follows that steel girder platform X-direction maximum displacement is 0.89mm, Y-direction
Maximum displacement is 0.893mm, and Z-direction maximum displacement is 16.95mm, it is seen that deforms less, can meet construction requirement.Steel truss
Platform maximum stress is 133.31MP, and maximum stress occurs at Platform center obliquely-intersected beams, less than yield strength 235MP of steel
And 345MP, it is seen that this steel platform can meet requirement for bearing capacity.
(2), steel truss processing
Carrying out the processing of truss after having designed, try to abandon in carrying out factory after machining dress, checks and accepts component, reaches design and wants
Building site can be transported to after asking.
(3), steel truss is installed
Job site transported to by steel truss, rechecks, numbers, and utilizes tower crane that truss loose mail is hung in storehouse inner bottom plating, according to following
Order is installed: reinforce hack lever (upper cord member 3, lower edge rod member 4) → body frame bar 2 → diagonal brace hack lever 16 → center disk 1 →
Pull bar 5.
(4), bracket measurement and positioning
During the cylinder of construction storehouse, determine the position of bracket preformed hole according to the design of truss and bracket, be accurately positioned, protect
Card truss suspension centre coincide with bracket position.
(5), suspender and bracket are installed
The external scaffolding utilizing silo gutter to set up when constructing operates platform, installs lifting hoist on silo wall top
Tool and supporting lifting calabash connecting cable and master control case, utilize below external scaffolding and steel truss suspension bracket at bulkhead reserved place
Put installation bracket.Fixture, suspender, bracket are installed as shown in Figure 4, Figure 5 and Figure 6.In Fig. 4, fixture is blocked from both sides by channel-section steel 7
Silo wall 6, the side of fixture is provided with some fixture bolts 9, and is provided with reserved lifting hole(eyelet) 8.In Fig. 6, the steel plate of bracket passes through
High-strength bolt 10 arrives rear flank silo through silo wall 6 inside silo and tightens fixing, makes bracket be fixed on inside silo
To bear the power of top transmission on silo wall.
(6), truss promotes
Utilizing and install the overall boist truss of calabash synchronization on suspender, truss entirety initial synchronisation promotes 2 meters, at truss lower edge
Whole ring manipulation suspension bracket, protection network, net of revealing all the details are installed.Continue to lift up steel structure truss to designed elevation, utilize operation below truss flat
Platform installs sub-truss bracket.Steel truss is connected fixing with bracket, and truss has lifted.Then on truss install bracing frame and
Template ties up reinforcing bar, casting concrete.
(7), steel truss is removed
Concrete carries out the dismounting of truss after reaching design strength.As shown in Figure 7 and Figure 8, during dismounting, at roof plate of silo 15
And between silo wall 6, it is provided with a reserved opening 14, each at silo wall 6 top and roof plate of silo 15 top setscrew respectively
Fix one piece 500 × 500, the fixation steel plate 12 of 12 thickness, then with a 12# I-steel 13, two pieces of fixation steel plates 12 have been connected
Coming, be provided with one block of steel plate stretched in reserved opening 14 below I-steel 13, this steel plate is provided with a lifting hole(eyelet) 11.From Fig. 8 institute
The plane graph that shows is it can be seen that their position relationship.Electric block is used to drive steel truss during dismounting, the steel of every electric block
Hinge both passes through the lifting hole(eyelet) 11 of roof plate of silo 15, is connected firmly with steel construction support body and keeps the balance of steel construction support body, then
Utilize electric gourd hang that truss drops to storehouse base plate, utilize the instrument such as electric welder and operative's spanner, whole sliding formwork is put down
Platform decomposes, cutting transports from storehouse base plate door opening.
Certainly, being more than concrete exemplary applications of the present utility model, this utility model also has other embodiment, all
Use the technical scheme that equivalent or equivalent transformation are formed, within all falling within the protection domain required by this utility model.
Claims (2)
1. a circular cone roofing integrally-lifting steel truss, it is characterised in that: it includes center disk (1), center disk (1)
Being arranged over a collar plate shape superstructure, the diameter of this collar plate shape superstructure is more than the diameter of center disk (1), this collar plate shape superstructure
Center of circle projection in center disk (1) overlaps with the center of circle of center disk (1)；Collar plate shape superstructure side semi-circular portions to
Center disk (1) extends some main rod hanger (2) in the plane, and main rod hanger (2) is with collar plate shape superstructure and center disk (1)
The line in the center of circle be axle be the uniform setting of hoop；In the opposite side semi-circular portions of collar plate shape superstructure to center disk (1) place
The some upper cord members (3) corresponding with the main rod hanger of offside (2) are extended in plane；Described main rod hanger (2) and top boom
Part (3) junction point in the plane at center disk (1) place constitutes a complete big disk, and the diameter of this big disk is more than circle
The diameter of dish-type superstructure；Above three disk and connect their main rod hanger (2), upper cord member (3) and other connecting rod altogether
With the structure constituting circular cone roofing integrally-lifting steel truss.
Circular cone roofing integrally-lifting steel truss the most according to claim 1, it is characterised in that: other connecting rod described
At least include the lower edge rod member (4) for connecting big disk and center disk (1), be used for connecting main rod hanger (2) and center disk
(1) pull bar (5), it is used for connecting the diagonal brace hack lever (16) of center disk (1) and collar plate shape superstructure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620309655.1U CN205530902U (en) | 2016-04-14 | 2016-04-14 | Whole over -and -under type steel truss of circular cone roofing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620309655.1U CN205530902U (en) | 2016-04-14 | 2016-04-14 | Whole over -and -under type steel truss of circular cone roofing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205530902U true CN205530902U (en) | 2016-08-31 |
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ID=56791936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620309655.1U Expired - Fee Related CN205530902U (en) | 2016-04-14 | 2016-04-14 | Whole over -and -under type steel truss of circular cone roofing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205530902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042577A (en) * | 2019-12-18 | 2020-04-21 | 中建科工集团有限公司 | Method for dismantling plane-intersected truss |
-
2016
- 2016-04-14 CN CN201620309655.1U patent/CN205530902U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042577A (en) * | 2019-12-18 | 2020-04-21 | 中建科工集团有限公司 | Method for dismantling plane-intersected truss |
| CN111042577B (en) * | 2019-12-18 | 2021-11-16 | 中建科工集团有限公司 | Method for dismantling plane-intersected truss |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160831 Termination date: 20200414 |