CN103821360A - Construction method for high-altitude long-span cantilever formwork - Google Patents
Construction method for high-altitude long-span cantilever formwork Download PDFInfo
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- CN103821360A CN103821360A CN201410072157.5A CN201410072157A CN103821360A CN 103821360 A CN103821360 A CN 103821360A CN 201410072157 A CN201410072157 A CN 201410072157A CN 103821360 A CN103821360 A CN 103821360A
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- encorbelmenting
- mould bases
- floor
- construction method
- fitting
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 238000009415 formwork Methods 0.000 title claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 239000003550 marker Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009408 flooring Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a construction method for a high-altitude long-span cantilever formwork. The construction method comprises the following steps: 1) assembling a cantilever formwork; 2) performing floor surveying, lining and arranging an embedded part; 3) hanging the cantilever formwork; 4) supporting and arranging a template; 5) performing a load test. According to the construction method provided by the invention, the cantilever formwork is assembled in advance, and then the cantilever formwork is hung for mounting, the construction technique is simplified and the rigidity of the cantilever formwork can meet the construction requirement, so that the construction period is greatly shortened, the construction cost is reduced and the cantilever formwork is safer and more stable.
Description
Technical field
The present invention relates to the high-altitude long-span mould bases construction method of encorbelmenting.
Background technology
Overlength is corniced outward and mouthful is applied in architectural design, can build serious, simple and unsophisticated architectural style, is therefore deeply subject to liking of building designers.In work progress, need to use the cantilevered structure of large span as support, use common ground steel pipe scaffold as support system, long construction period, material cost is high, adopt steel pipe builder's jack as braced structures, materials'use amount is relatively low, construct comparatively simple, but the rigidity of steel pipe builder's jack is less, less stable, cannot meet the construction requirement of large load, and mould bases self rigidity of encorbelmenting is large, safety has also exceeded common steel tube builder's jack, also can solve console mode scaffold building long in time limit, the difficult problems such as waste of material simultaneously.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of high-altitude long-span mould bases construction method of encorbelmenting, and can shorten construction period, reduces costs and make the mould bases safety and stability of encorbelmenting.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: the high-altitude long-span mould bases construction method of encorbelmenting, comprises the steps:
Step 1, assembles the mould bases of encorbelmenting;
Step 3, lifts the mould bases of encorbelmenting;
Step 4, formwork erection;
Step 5, load test.
Preferably, floor is measured unwrapping wire when built-in fitting is set, ejects line of ink marker full-size drawing according to floor height and cantilever span on floor face, and on upper and lower two layers of floor embedding built-in fitting, at the embedding round steel anchor ring of upper floor, and make round steel anchor ring and built-in fitting be positioned at same plane.
Preferably, when mould bases is encorbelmented in lifting, lift by tower crane the mould bases of encorbelmenting, floor face 2m is stretched into in the Cantilever Beams one end of encorbelmenting on mould bases, anchor in floor with round steel anchor ring at Cantilever Beams 0.4m, 1.4m place, Cantilever Beams bottom and diagonal member lower end and the built-in fitting of encorbelmenting on mould bases are weldingly connected again.
Preferably, when formwork erection, set up scaffold floor on the mould bases top of encorbelmenting, on scaffold floor, lay wooden springboard.
Preferably, when load test, do loading test step by step on template, get respectively 80%, 100%, 120% of its design load and carry out loading test, the every step of loading test is carried out 2 hours.
The present invention assembles the mould bases of encorbelmenting in advance, then the lifting mould bases of encorbelmenting installs, and has simplified construction technology, and the mould bases rigidity of can guaranteeing to encorbelment reaches construction requirement requirement, thereby has greatly shortened construction period, has reduced construction, the also safety and stability more of mould bases of encorbelmenting.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
Fig. 1 is the structural representation of mould bases of encorbelmenting in the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.
As shown in Figure 1, the mould bases of encorbelmenting in the present invention comprises Cantilever Beams 1, described Cantilever Beams one end is connected with the built-in fitting 2 of upper floor, described Cantilever Beams stretches out flooring section soffit and connects the first oblique vertical rod 301 and the second oblique vertical rod 302, the described first oblique vertical rod interconnects with the lower end of the second oblique vertical rod and tie point is connected with the built-in fitting of lower floor flooring, between the described first oblique vertical rod and the second oblique vertical rod, be provided with several support bars 4, the large planar delta that described support bar forms the first oblique vertical rod and the second oblique vertical rod and Cantilever Beams is divided into several little planar deltas.The mid point that flooring section soffit is stretched out with Cantilever Beams 1 respectively in the upper end of the described first oblique vertical rod 301 and the second oblique vertical rod 302 is connected with end points.Described support bar 4 comprises two transverse support bar 401 and two vertical supporting bars 402, described transverse support bar left end is connected with the trisection point of the first oblique vertical rod 301, described transverse support bar right-hand member is connected with the trisection point of the second oblique vertical rod 302, and described vertical supporting bar is connected with the quadrangle diagonal angle that the first oblique vertical rod, the second oblique vertical rod form with transverse support bar respectively at two ends Shang Xia 402.Described Cantilever Beams 1 adopts 16# i iron, and the described first oblique vertical rod 301, the second oblique vertical rod 302 and support bar 4 adopt 12# i iron.Described support bar 4 both sides are respectively equipped with steel pipe 5, and described steel pipe two ends and support bar two ends are weldingly connected.
The present invention includes following steps:
Step 1, assembles the mould bases of encorbelmenting;
Step 3, lifts the mould bases of encorbelmenting;
Step 4, formwork erection;
Step 5, load test.
Assemble the mould bases of encorbelmenting, according to the Mold Base Design figure that encorbelments, successively by the first oblique vertical rod and the second oblique vertical rod and Cantilever Beams bottom welding, afterwards the first oblique vertical rod and the second oblique vertical rod are welded as a whole, then measure and draw trisection point in the first oblique vertical rod and the second oblique vertical rod, welding afterwards support bar and the support bar both sides steel pipe for reinforcing, can there is not out-of-plane distortion in the mould bases of guaranteeing to encorbelment.
When floor measurement unwrapping wire arranges built-in fitting, on floor face, eject line of ink marker full-size drawing according to floor height and cantilever span, and on upper and lower two layers of floor embedding built-in fitting, built-in fitting is selected Ф 25 reinforcing bars, at the embedding round steel anchor ring of upper floor, and make round steel anchor ring and built-in fitting be positioned at same plane.
When mould bases is encorbelmented in lifting, lift by tower crane the mould bases of encorbelmenting, floor face 2m is stretched into in the Cantilever Beams one end of encorbelmenting on mould bases, then anchor in floor with Ф 20 round steel anchor rings at Cantilever Beams 0.4m, 1.4m place, Cantilever Beams bottom and diagonal member lower end and the built-in fitting of encorbelmenting on mould bases are weldingly connected.
When formwork erection, set up scaffold floor on the mould bases top of encorbelmenting, on scaffold floor, lay wooden springboard.
When load test, on template, do loading test step by step, load is pressed least favorable place and is considered, get respectively 80%, 100%, 120% of its design load and carry out loading test, the every step of loading test is carried out 2 hours, in the outermost of eaves board and the outermost of truss, observation point is set respectively, and compares with the original point being located on frame column, whether observation deformation values exceedes design load.
Claims (5)
1. the high-altitude long-span mould bases construction method of encorbelmenting, is characterized in that comprising the steps:
Step 1, assembles the mould bases of encorbelmenting;
Step 2, floor is measured unwrapping wire built-in fitting is set;
Step 3, lifts the mould bases of encorbelmenting;
Step 4, formwork erection;
Step 5, load test.
2. the high-altitude long-span according to claim 1 mould bases construction method of encorbelmenting, it is characterized in that: when floor measurement unwrapping wire arranges built-in fitting, on floor face, eject line of ink marker full-size drawing according to floor height and cantilever span, and on upper and lower two layers of floor embedding built-in fitting, at the embedding round steel anchor ring of upper floor, and make round steel anchor ring and built-in fitting be positioned at same plane.
3. the high-altitude long-span according to claim 1 mould bases construction method of encorbelmenting, it is characterized in that: when mould bases is encorbelmented in lifting, lift by tower crane the mould bases of encorbelmenting, floor face 2m is stretched into in the Cantilever Beams one end of encorbelmenting on mould bases, anchor in floor with round steel anchor ring at Cantilever Beams 0.4m, 1.4m place, Cantilever Beams bottom and diagonal member lower end and the built-in fitting of encorbelmenting on mould bases are weldingly connected again.
4. the high-altitude long-span according to claim 1 mould bases construction method of encorbelmenting, is characterized in that: when formwork erection, set up scaffold floor on the mould bases top of encorbelmenting, lay wooden springboard on scaffold floor.
5. the high-altitude long-span according to claim 4 mould bases construction method of encorbelmenting, it is characterized in that: when load test, on template, do loading test step by step, get respectively 80%, 100%, 120% of its design load and carry out loading test, the every step of loading test is carried out 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072157.5A CN103821360A (en) | 2014-02-28 | 2014-02-28 | Construction method for high-altitude long-span cantilever formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072157.5A CN103821360A (en) | 2014-02-28 | 2014-02-28 | Construction method for high-altitude long-span cantilever formwork |
Publications (1)
| Publication Number | Publication Date |
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| CN103821360A true CN103821360A (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072157.5A Pending CN103821360A (en) | 2014-02-28 | 2014-02-28 | Construction method for high-altitude long-span cantilever formwork |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569326A (en) * | 2015-03-16 | 2016-05-11 | 中国建筑第四工程局有限公司 | Handling frame without support and exterior wall construction method thereof |
| CN107100187A (en) * | 2017-05-22 | 2017-08-29 | 庄爱军 | Tower crane steel girder erection structure and installation method |
| CN114775993A (en) * | 2022-05-05 | 2022-07-22 | 标龙建设集团有限公司 | A construction method of a high-support formwork plate buckle frame body of a cantilever structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2564935A (en) * | 1948-09-13 | 1951-08-21 | John B Templeton | Bracket for supporting roadway overhang forms |
| CN2396135Y (en) * | 1999-11-12 | 2000-09-13 | 富兴伟 | Simple overhanging type scaffold |
| CN2563239Y (en) * | 2002-01-24 | 2003-07-30 | 王汉猷 | Plug rod type lift scaffold for high rised balcong |
| CN2832995Y (en) * | 2005-08-24 | 2006-11-01 | 上海市第七建筑有限公司 | Suspension scaffold supporting device of light hanging type brandreth |
| CN102454292A (en) * | 2010-10-19 | 2012-05-16 | 中国建筑第七工程局有限公司 | Supporting steel frame of high altitude large-span cantilever structure mold frame |
-
2014
- 2014-02-28 CN CN201410072157.5A patent/CN103821360A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2564935A (en) * | 1948-09-13 | 1951-08-21 | John B Templeton | Bracket for supporting roadway overhang forms |
| CN2396135Y (en) * | 1999-11-12 | 2000-09-13 | 富兴伟 | Simple overhanging type scaffold |
| CN2563239Y (en) * | 2002-01-24 | 2003-07-30 | 王汉猷 | Plug rod type lift scaffold for high rised balcong |
| CN2832995Y (en) * | 2005-08-24 | 2006-11-01 | 上海市第七建筑有限公司 | Suspension scaffold supporting device of light hanging type brandreth |
| CN102454292A (en) * | 2010-10-19 | 2012-05-16 | 中国建筑第七工程局有限公司 | Supporting steel frame of high altitude large-span cantilever structure mold frame |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569326A (en) * | 2015-03-16 | 2016-05-11 | 中国建筑第四工程局有限公司 | Handling frame without support and exterior wall construction method thereof |
| CN107100187A (en) * | 2017-05-22 | 2017-08-29 | 庄爱军 | Tower crane steel girder erection structure and installation method |
| CN107100187B (en) * | 2017-05-22 | 2019-07-30 | 庄爱军 | Tower crane steel girder erection structure and installation method |
| CN114775993A (en) * | 2022-05-05 | 2022-07-22 | 标龙建设集团有限公司 | A construction method of a high-support formwork plate buckle frame body of a cantilever structure |
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Application publication date: 20140528 |