CN103821377B - Use the method for angle template contral steel structural roof beam downwarp - Google Patents
Use the method for angle template contral steel structural roof beam downwarp Download PDFInfo
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- CN103821377B CN103821377B CN201410082625.7A CN201410082625A CN103821377B CN 103821377 B CN103821377 B CN 103821377B CN 201410082625 A CN201410082625 A CN 201410082625A CN 103821377 B CN103821377 B CN 103821377B
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Abstract
The technology of the present invention is related to large span Green environmental-protection building field, refers specifically to a kind of method of use angle template contral steel structural roof beam downwarp.Due to component crossbeam center contact position manufactured size error, crossbeam effect of weight, it roof girder is produced different degrees of downwarp, directly affect roofing flatness.In order to solve the above technical problems, it is an object of the invention to provide a kind of simple, reliable and standardization mode, making can not reaching and encircleing in advance the requirement of primary system one after roof girder integral hoisting.The technical scheme method and step that the present invention takes is A：According to trigonometric function, junction angle [alpha] in the middle part of roof girder is calculated：Trigonometric tangential tg α=（L/250）÷（L/2）Calculate, α angles are 90 ° of 89.89 ° of 0.114 ° of ≈；B：Drawings marked；C：Produce angle template；D：Roof girder makes；E：Quality examination；F：Roof girder is installed.
Description
Technical field
The technology of the present invention is related to large span Green environmental-protection building field, refers specifically to use angle template contral steel structural roof
The method of beam downwarp.
Background technology
In steel structural roof beam installation process, due to component roof girder center contact position manufactured size error, roof girder
Effect of weight, generally can all make roof girder produce different degrees of downwarp, directly affect roofing flatness.Must be to roofing for this
Beam carries out making flatness control.Current steel construction portal-rigid frames roof girder manufacturing process roof girder flatness control typically has
Following two methods：
Method 1, by controlling diagonal to control angle, but there is following defect in the method：1. the section chi of roof girder
It is very little to have certain influence for diagonal；2. measurement diagonal must two people could carry out, tape measure it is elastic, survey crew
Conscientious degree will all directly influence measurement accuracy.3. every drawing is both needed to calculate diagonal in advance.4. pre- arch value is not considered,
Easily cause roof girder that downwarp is installed.
Method 2, according to 90 ° of junction angle requirement in the middle part of roof girder, make 90 ° of common angle templates, pass through angle
The angle of chord on template contral roof girder, the relatively simple practicality of the method are spent, but there is following defect：Pre- arch value is not considered, once
Angle template, which has, produces deviation in deviation, or manufacturing process, easily cause roof girder to install downwarp.
The content of the invention
For drawbacks described above, in order to solve the above technical problems, it is an object of the invention to provide a kind of simple, reliable and
The mode of standardization, makes can not reaching and encircles in advance the requirement of primary system one after roof girder integral hoisting.
To achieve the above object, the present invention, which is adopted the technical scheme that, uses angle template contral steel structural roof beam downwarp
Method, step is A：According to trigonometric function, junction angle [alpha] in the middle part of roof girder is calculated：Trigonometric tangential tg α=（ L/250）÷
（L/2）Calculate, wherein L is the half of whole span, α angles are 90 ° of 89.89 ° of -0.114 ° of ≈；The origin of formula, according to steel
Downwarp cannot be greater than L/500 in code for structural design requirement, roof girder L length ranges, and roof girder arch camber is also contemplated that in addition,
I.e. arch camber also cannot be greater than L/500 in roof girder L length ranges, i.e., roof girder should in roof girder L length ranges
Straight, predeformation amount is when roof girder makes：Overcome lower flexure strain amount L/500+ arch cambers predeformation amount L/500=L/250；
By subtracting 0.11 degree, i.e., 89.89 degree by 90 degree of middle part junction between roof girder, the angle [alpha] of middle part junction between roof girder
It is defined as 89.89
When spending, thus ensure it is pre-splicing after there is 10-20 ㎜ pre- arch with junction, rushed using steel construction from gravity
Subtract；
B：Drawings marked, it is unified on drawing clearly to identify roof girder link position angle before roof girder making, i.e.,
It it is 89.89 degree mark makes angle [alpha] on junction in the middle part of roof girder；
C：Angle template is produced, by steel plate or lucite, a quadrangle is fabricated to, wherein two angle is straight
Angle a, angle is 89.89 degree, and the length of side is 300~500mm, and thickness is 1~3mm；
D：Roof girder makes, and staff uses angle template construct roof girder, makes the roof girder middle part junction made
Angle is consistent；
E：Quality examination, quality inspection personnel carries out angle quality examination by angle template to roof girder, confirms errorless；
F：Roof girder is installed, two pieces of roofing roof girders spliced, it is ensured that two 89.89 degree of angles are stitched together, warp
The practical operation application of multiple engineerings, then roof girder downwarp event did not occurred.
Angle template is characterised by：In quadrangle, wherein two angle is right angle, and an angle is 89.89 degree, side
A length of 300~500mm, thickness is 1~3mm.
This method mainly has superiority to be：Simple and practical, operation is directly perceived, reliability is high.Compared with prior art, same
Deng equipment, under the conditions of the conscientious degree of employee, roof girder downwarp, angle false defect can be avoided.
Brief description of the drawings
Fig. 1 is method angle control schematic diagram of the present invention using angle template contral steel structural roof beam downwarp；
Fig. 2 is method angle template schematic diagram of the present invention using angle template contral steel structural roof beam downwarp.
Embodiment
Further described referring to the drawings 1, accompanying drawing 2, the present invention uses the side of angle template contral steel structural roof beam downwarp
Method, takes following steps, A：According to trigonometric function, the middle part junction angle [alpha] of roof girder 1 is calculated：Trigonometric tangential tg α=（ L/
250）÷（L/2）Calculate, wherein L is the half of whole span, α angles are 90 ° of 89.89 ° of -0.114 ° of ≈.B：Drawings marked,
It is unified on drawing clearly to identify the middle part junction angle of roof girder 1 before roof girder 1 is manufactured, i.e., connected in the middle part of roof girder
It is 89.89 degree that mark, which makes angle [alpha], in place 2.C：Angle template 3 is produced, by steel plate or lucite, four sides are fabricated to
Shape, wherein two angle is right angle, and an angle is 89.89 degree, and the length of side is 300~500mm, and thickness is 1~3mm.D：Roofing
Beam 1 makes, and staff utilizes angle template construct roof girder 1, makes roof girder middle part junction 2 angle made consistent.E：
Quality examination, quality inspection personnel carries out angle quality examination by angle template 3 to roof girder, confirms errorless.F：Roof girder is installed
1, two pieces of roofing roof girders are spliced, it is ensured that two 89.89 degree of angles are stitched together.Quality is examined before the present invention makes roof girder
Look into personnel and uniformly produce angle template according to drawing requirement in advance, and roof girder making, correction are carried out with this template and examine, protect
Card middle part junction angle is errorless.Operating method is simple and practical.Fundamentally avoid downwarp quality accident after roof girder lifting, drop
Low Construction Cost, improves engineering construction progress, it is ensured that safe construction.
Claims (1)
1. use the method for angle template contral steel structural roof beam downwarp, it is characterised in that carry out as follows：A：According to
Trigonometric function, calculates junction angle [alpha] in the middle part of roof girder：Trigonometric tangential tg α=（ L/250）÷（L/2）Calculate, α angles are
90 ° of 89.89 ° of -0.114 ° of ≈, L are the half of roofing beam span；
B：Drawings marked, it is unified on drawing clearly to identify junction angle in the middle part of roof girder before roof girder making, i.e.,
It it is 89.89 degree mark makes angle [alpha] on junction in the middle part of roof girder；
C：Angle template is produced, by steel plate or lucite, a quadrangle is fabricated to, wherein two angle is right angle, one
Angle is 89.89 degree, and the length on each side is 300~500mm, and thickness is 1~3mm；
D：Roof girder makes, and staff utilizes angle template construct roof girder, makes junction angle one in the middle part of the roof girder of work
Cause；
E：Quality examination, quality inspection personnel carries out angle quality examination by angle template to roof girder, confirms errorless；
F：Roof girder is installed, two pieces of roof girders spliced, it is ensured that two 89.89 degree of angles are stitched together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082625.7A CN103821377B (en) | 2014-03-10 | 2014-03-10 | Use the method for angle template contral steel structural roof beam downwarp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082625.7A CN103821377B (en) | 2014-03-10 | 2014-03-10 | Use the method for angle template contral steel structural roof beam downwarp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821377A CN103821377A (en) | 2014-05-28 |
| CN103821377B true CN103821377B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410082625.7A Active CN103821377B (en) | 2014-03-10 | 2014-03-10 | Use the method for angle template contral steel structural roof beam downwarp |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060696A (en) * | 2014-05-30 | 2014-09-24 | 当代节能置业股份有限公司 | Large-span steel beam connecting structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11159146A (en) * | 1997-11-25 | 1999-06-15 | Matsushita Electric Works Ltd | Hanging-in jig for framework for paneling method |
| JP2005188102A (en) * | 2003-12-25 | 2005-07-14 | Shimizu Corp | Structure of building and construction method |
| CN201567683U (en) * | 2009-12-18 | 2010-09-01 | 上海市机械施工有限公司 | Side-sway resistant end face tightening temporary connecting joint structure |
| CN102127966A (en) * | 2011-02-14 | 2011-07-20 | 宿迁华夏建设(集团)工程有限公司 | Fixing device for template of cast-in-place reinforced concrete column |
| CN103603496A (en) * | 2013-12-13 | 2014-02-26 | 江苏通州四建集团有限公司 | Deviation integral elevation steel corridor carrying method and lateral limiting device thereof |
-
2014
- 2014-03-10 CN CN201410082625.7A patent/CN103821377B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11159146A (en) * | 1997-11-25 | 1999-06-15 | Matsushita Electric Works Ltd | Hanging-in jig for framework for paneling method |
| JP2005188102A (en) * | 2003-12-25 | 2005-07-14 | Shimizu Corp | Structure of building and construction method |
| CN201567683U (en) * | 2009-12-18 | 2010-09-01 | 上海市机械施工有限公司 | Side-sway resistant end face tightening temporary connecting joint structure |
| CN102127966A (en) * | 2011-02-14 | 2011-07-20 | 宿迁华夏建设(集团)工程有限公司 | Fixing device for template of cast-in-place reinforced concrete column |
| CN103603496A (en) * | 2013-12-13 | 2014-02-26 | 江苏通州四建集团有限公司 | Deviation integral elevation steel corridor carrying method and lateral limiting device thereof |
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| Publication number | Publication date |
|---|---|
| CN103821377A (en) | 2014-05-28 |
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Address after: 411100 Jinhai Road, Jiuhua demonstration area, Xiangtan, Hunan 1 Patentee after: Hunan Jin Haigang Construction Co. Ltd. Address before: 410000 Jinhai Road, Jiuhua demonstration area, Xiangtan, Hunan 1 Patentee before: Hunan Jinhai Steel Structure Co., Ltd. |