CN1022117C - Process for frame slipform and net framework - Google Patents
Process for frame slipform and net framework Download PDFInfo
- Publication number
- CN1022117C CN1022117C CN 90100950 CN90100950A CN1022117C CN 1022117 C CN1022117 C CN 1022117C CN 90100950 CN90100950 CN 90100950 CN 90100950 A CN90100950 A CN 90100950A CN 1022117 C CN1022117 C CN 1022117C
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- cramp bar
- jack
- steel pipe
- frame
- large span
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Abstract
The present invention relates to a construction method for synchronously raising a frame slip form and a net rack. When a hydraulic slip form is used for constructing a frame structure, a house cover of the whole net rack is raised in a place. The present invention is characterized in that hoisting jacks in groups are arranged in the position of a post, and a supporting rod made of a structural steel bar can be raised. A large-tonnage hoisting jack is arranged in the position of a beam, a supporting rod made of scaffolding steel tube can be raised, and the synchronous construction of slipping a form and raising can be realized. The present invention is suitable for the construction of a large span net rack and has the advantages of safe construction, short construction period and low cost.
Description
The invention belongs to construction techniques, particularly the large span grid structure adopts the method that sliding formwork and jacking are constructed simultaneously.
At present, frame construction adopts slding form operation, space truss structure to adopt jack-up construction, is applied.For the large span grid roof structure, its integral top lifting construction method becomes parts than on-site consolidation, adopts the heavy type structure lifting, and scaffolding has construction safety, the advantage of saving duration to the method for jacking row assembly network frame." coal science and technology " technology third phase in 1989 periodical has the article of " wind and rain playground framework sliding formwork jacking rack construction technology ", wind and rain playground described in the literary composition is a sports palace, long 42 meters of thing, north and south is wide 33 meters, 20 pillars become octagon, roof system is tiltedly to put quadrangular pyramid formula spherical nodal steel pipe rack, its constructure scheme is: rack is prefabricated on the spot assembling on ground, utilize the rack lower edge to make the sliding formwork platform, when network frame house cap structure and frame construction integrally combine, when can adopt the slding form operation frame construction, the ball node bearing of the whole rack roof structure that assembles is arranged on the hydraulic slip-form device, and the network frame house cap structure just rises construction and is put in place by jacking with frame construction is sliding.Ordinary circumstance is that the ball node bearing of network frame house cap structure is arranged in the frame column top, the loading that relies on the sliding cramp bar that rises jack of cylinder to transmit the grid frame supported roof structure.Therefore, when the post of frame construction apart from bigger, during greater than the spacing of network frame house cap structure ball node,, and can't adopt the job practices of framework sliding formwork jacking simultaneously because the ball node bearing is or not the capital position.
The objective of the invention is the job practices of the large span grid structure when a kind of frame column distance is provided greater than rack lower edge ball node spacing.
The job practices of large span grid structure of the present invention, this space truss structure comprises rack and supports the framework of rack, adopt the concrete of hydraulic sliding mould construction method pouring frame structure, it is characterized in that: jack in groups is set at the pillar position, the cramp bar that the structure reinforcing bars that climbs is done, rack lower edge ball node bearing argued to be connected with the channel-section steel linking beam of sliding formwork hoisting frame; Position at beam is provided with large-tonnage jack, the cramp bar that the climbing scaffold steel pipe is done, rack lower edge ball node bearing argued to be connected with the channel-section steel lower transverse beam of sliding formwork hoisting frame, rises simultaneously sliding, to the capital absolute altitude, realization sliding formwork and jacking are constructed synchronously with the jacking of integral net shelf structure.
Adopt welding method when structure reinforcing bars cramp bar and scaffolding steel pipe cramp bar spreading, before by jack, weld seam is polished;
On the reinforcing bar cramp bar of different model jack or steel pipe cramp bar, be with the steel pipe of different length, diameter, make the limit valve on the jack remain on same horizontal level;
Adopt laser scanning controlling level absolute altitude, when on the spacing card on the cramp bar is each, returning absolute altitude,, make the spacing card of all cramp bars be in same horizontal level by laser scanning;
The steel pipe cramp bar is linked to be lattice frame with scaffold, and, in time connects horizontal steel tube and reinforce, to guarantee not unstability of steel pipe cramp bar with the rising of sliding formwork height.
The job practices of large span grid structure of the present invention is used large-tonnage jack climbing scaffold steel pipe cramp bar, has solved the whole sliding formwork jack-up construction technology of large span grid structure, for crossed construction, the reduction of erection time of engineering have been created condition.The present invention compares with the job practices that adopts heavy type structure lifting, the top assembly network frame of building a framework, and having saved builds a framework in a large number uses steel pipe; Solved the difficulty of prefabricated pillar lifting simultaneously; Make cramp bar with structure reinforcing bars, avoided the waste of cramp bar; Reduce engineering cost, guaranteed construction safety.
Below in conjunction with drawings and Examples, the present invention is described further.
Fig. 1 is the frame column and the rack ball node support graph of the job practices of large span grid structure.
Fig. 2 is the pillar station diagram of the job practices of large span grid structure.
Fig. 3 is the station diagram of beam of the job practices of large span grid structure.
As seen from the figure, a kind of pillar 1 spacing of frame construction of large span grid structure has 4 meters, 8 meters, 12 meters, 24 meters several, and 24 meters of capital absolute altitudes have five road linking beams 2 along the high direction of post, one Vierendeel girder of capital.4 * 4 meters of the center to center distance of network frame house cap lower edge ball node 7, the ball node bearing is established and is argued 8, be shelved on position in capital position and the beam, be connected with the channel-section steel linking beam 9 of capital position sliding formwork hoisting frame respectively or be connected with the channel-section steel lower transverse beam 10 of the position sliding formwork hoisting frame of beam.Part is respectively equipped with the ball node bearing of 1,2,5 rack in the beam of post apart from 8 meters, 12 meters, 24 meters the time.
Each pillar position is provided with 3.5 tons of ball-type jack 3 that number does not wait according to the difference of bearing load, makes cramp bar 5 with diameter 25mm structure reinforcing bars.6 tons or 10 tons of Wedge-type jack 4 are in groups adopted at the position of beam, make cramp bar 6 with diameter 48mm scaffolding steel pipe.
For the limit valve of the spacing levelling device that makes three kinds of jack on same horizontal level, and the top rail that all is higher than the sliding formwork hoisting frame, 1.25 inches steel pipes 12 of cover on diameter 25 cramp bars, 2 inches steel pipes 12 of cover on diameter 48 cramp bars, pipe range absolute altitude to climbing forms distance suitable for reading is all got 1700mm.
Adopt the laser level scan control, measure the absolute altitude that spacing card 11 returns on each, the spacing leveling of each jack at the position of control pillar position and beam.Because three kinds of jack tonnage differences, structure is different, the downslide amount difference, and it is sliding at every turn that peaceful all to have 3mm to rise poor, take to promote 5 strokes, the promptly sliding 150mm that rises, accumulation rises difference 15mm, spacing leveling once to reduce the distortion of space truss structure and sliding form apparatus, reduces the imposed load of jack.
The whole construction activities is as follows: adopts hydraulic slip-form, builds the pillar concrete, and climbing forms; When watering every layer of framework capital, sky is put forward the template of certain altitude and is promptly stopped to slide, and installs the linking beam soffit formwork, the reinforcing bar of colligation beam, the concrete of employing slipform process casting beams; Successively pouring frame post and beam successively to the top frame position of setting a roof beam in place, adopt the formwork in-situ frame beam; In post, the beam slding form operation process of framework, the network frame house cap structure is with the hydraulic slip-form device jacking; When rack lower edge ball node bearing arrives the top absolute altitude, bearing is argued is fixed on the Vierendeel girder top as embedded part, finishes the synchronous construction of whole framework sliding formworks and rack jacking.
Claims (5)
1, a kind of job practices of large span grid structure, this space truss structure comprises rack and supports the framework of rack, adopt the concrete of hydraulic sliding mould construction method pouring frame structure, it is characterized in that: jack in groups is set at the pillar position, the cramp bar that the structure reinforcing bars that climbs is done is lifted rack lower edge ball node bearing to shoulder with the channel-section steel linking beam of sliding formwork hoisting frame and is connected; Position at beam is provided with large-tonnage jack, the cramp bar that the climbing scaffold steel pipe is done, rack lower edge ball node bearing argued to be connected with the channel-section steel lower transverse beam of sliding formwork hoisting frame, rises simultaneously sliding, to the capital absolute altitude, realization sliding formwork and jacking are constructed synchronously with the jacking of integral net shelf structure.
2, the job practices of large span grid structure as claimed in claim 1 is characterized in that: structure reinforcing bars cramp bar and scaffolding steel pipe cramp bar adopt the welding spreading, before by jack weld seam are polished.
3, the job practices of large span grid structure as claimed in claim 1 is characterized in that: be with steel pipe on the reinforcing bar cramp bar of different model jack or steel pipe cramp bar, make the limit valve on the jack remain on same horizontal level.
4, as the job practices of claim 1 and 3 described large span grid structures, it is characterized in that: adopt laser scanning controlling level absolute altitude, when on the spacing card on the cramp bar is each, returning absolute altitude,, make the spacing card of all cramp bars be in same horizontal level by laser scanning.
5, the job practices of large span grid structure as claimed in claim 1 is characterized in that: the steel pipe cramp bar is linked to be lattice frame with scaffold, and, connects horizontal steel tube at any time and reinforce with the rising of sliding formwork height, and stable to guarantee the steel pipe cramp bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100950 CN1022117C (en) | 1990-02-28 | 1990-02-28 | Process for frame slipform and net framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100950 CN1022117C (en) | 1990-02-28 | 1990-02-28 | Process for frame slipform and net framework |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044511A CN1044511A (en) | 1990-08-08 |
| CN1022117C true CN1022117C (en) | 1993-09-15 |
Family
ID=4876882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100950 Expired - Fee Related CN1022117C (en) | 1990-02-28 | 1990-02-28 | Process for frame slipform and net framework |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1022117C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102016195B (en) * | 2008-02-18 | 2012-11-21 | 八路建设技术株式会社 | Drop panel structure of lattice-form and construction method thereof |
| CN104975602B (en) * | 2015-07-14 | 2016-08-24 | 中国葛洲坝集团第一工程有限公司 | High abrupt slope concrete slip-form traction control apparatus |
| CN106013795B (en) * | 2016-07-22 | 2017-12-12 | 四川电力建设三公司 | The method for dismounting of thermal power station's chimney hydraulic mould lifting device |
-
1990
- 1990-02-28 CN CN 90100950 patent/CN1022117C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044511A (en) | 1990-08-08 |
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