CN102733493A - Concrete filled steel tube truss anti-debonding node, and construction method of concrete filled steel tube truss anti-debonding node - Google Patents
Concrete filled steel tube truss anti-debonding node, and construction method of concrete filled steel tube truss anti-debonding node Download PDFInfo
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- CN102733493A CN102733493A CN2012102424184A CN201210242418A CN102733493A CN 102733493 A CN102733493 A CN 102733493A CN 2012102424184 A CN2012102424184 A CN 2012102424184A CN 201210242418 A CN201210242418 A CN 201210242418A CN 102733493 A CN102733493 A CN 102733493A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 238000010276 construction Methods 0.000 title abstract description 3
- 238000005192 partition Methods 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims description 9
- 230000010412 perfusion Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
本发明涉及一种钢管混凝土桁架防脱粘节点，包括主管、填充于主管内的混凝土以及焊接在主管外壁上的支管，所述主管管壁在与支管的连接区域内开设有便于主管内混凝土进入支管内的通孔；所述支管内壁焊接有用于阻断混凝土的隔断钢板，所述隔断钢板上开设有排气孔。本发明还涉及一种钢管混凝土桁架防脱粘节点的施工方法。本发明可有效限制节点区混凝土的收缩变形，解决了传统钢管混凝土桁架只在主管内部填充混凝土而造成的节点区混凝土与钢管内壁容易发生脱粘的问题；可明显改善钢管混凝土桁架节点的受力性能，提高节点的承载能力。
The invention relates to an anti-debonding node of a steel pipe concrete truss, which includes a main pipe, concrete filled in the main pipe and a branch pipe welded on the outer wall of the main pipe. The through hole in the branch pipe; the inner wall of the branch pipe is welded with a partition steel plate for blocking concrete, and an air vent is opened on the partition steel plate. The invention also relates to a construction method of the anti-debonding node of the steel pipe concrete truss. The invention can effectively limit the shrinkage and deformation of the concrete in the joint area, and solve the problem that the concrete in the joint area and the inner wall of the steel pipe are prone to debonding caused by the traditional concrete-filled steel pipe truss truss filling concrete only inside the main pipe; it can obviously improve the stress of the joint of the steel pipe concrete truss Performance, improve the carrying capacity of nodes.
Description
Technical field
The present invention relates to anti-unsticking node of a kind of concrete-filled steel tube truss and job practices thereof, belong to the building building technology field.
Background technology
In order to improve the local pressure performance of node in the steel pipe truss structure, fill concrete is a good method in the person in charge, and has formed a kind of new form of structure---steel pipe concrete truss structure thus.Arm still is empty steel pipe in this structure, and is responsible for owing to concrete filled has formed concrete filled steel tubular member, and its joint form is as shown in Figure 1.Existing research shows that steel pipe concrete truss structure can improve the local supporting capacity of node preferably, thereby reaches the order ground that improves the structural entity stress performance.Yet there are a relatively outstanding problem in encased structures or member, and promptly the steel pipe inner concrete because shrinkage strain separates with the steel pipe inwall easily the unsticking phenomenon takes place promptly.Unsticking will cause person in charge's steel pipe inwall of node area to be vacant state, and the part of drawing, taking place easily under the effect of pressure to be responsible for wall at arm is pressed and fallen into or tear failure.In order to guarantee the concrete density of steel pipe concrete truss structure node area, avoid the unsticking phenomenon to take place, be necessary the concrete-filled steel tube truss node is done rational improvement.
Summary of the invention
Deficiency in view of prior art; The object of the present invention is to provide anti-unsticking node of a kind of concrete-filled steel tube truss and job practices thereof; The anti-unsticking node of this concrete-filled steel tube truss has guaranteed concrete continuity of node area and density, has avoided the generation of unsticking phenomenon.
To achieve these goals; Technical scheme one of the present invention is the anti-unsticking node of a kind of concrete-filled steel tube truss; Comprise the person in charge, be filled in the concrete in being responsible for and be welded on the arm of being responsible on the outer wall, said person in charge's tube wall with the join domain of arm in offer and be convenient to be responsible for inner concrete and get into the through hole in the arm.
Further, said branch pipe wall is welded with and is used to block concrete partition steel plate.
Further, offer steam vent on the said partition steel plate.
Further, said partition steel plate is welded on branch pipe wall and highly locates from being responsible for outer wall h, h=(1 ~ 1.5) D wherein, and D is an external diameter of pipe.
Further, said through hole is a circular hole, said Circularhole diameter D1=(0.5 ~ 0.7) d, and d is a bore.
To achieve these goals; Technical scheme two of the present invention is job practicess of the anti-unsticking node of a kind of concrete-filled steel tube truss; Carry out according to the following steps: the tubular joint welding region with arm confirm to be responsible in (1), and is that a through hole is offered at the center with a tube's axis with the joining of being responsible for outer wall; (2) at partition steel plate that has steam vent of branch pipe wall welding; (3) arm is passed through welding mutually with the person in charge; (4), make concrete get in the arm and and block by cutting off steel plate toward the interior concrete perfusion of the person in charge.
Further, the through hole in the step (1) is a circular hole, said Circularhole diameter D1=(0.5 ~ 0.7) d, and d is a bore.
Further, the partition steel plate in the step (2) is welded on branch pipe wall and highly locates from being responsible for outer wall h, and wherein h=(1 ~ 1.5) D is an external diameter of pipe.
Compared with prior art; The present invention has the following advantages: through will lead, arm is communicated with; And, can guarantee concrete continuity of node area and density at arm root fill concrete, add the effect of contraction of being responsible near the steel plate of tube wall opening; This node can effectively limit the concrete shrinkage strain of node area, has solved the problem that unsticking takes place easily for a conventional steel concrete truss node area concrete that causes being responsible for inner fill concrete and steel pipe inwall; This node can obviously improve the stress performance of concrete-filled steel tube truss node, improves the supporting capacity of node.
Description of drawings
Fig. 1 is the organigram of concrete-filled steel tube truss regular node.
Fig. 2 is the organigram of the embodiment of the invention.
Fig. 3 is the I-I cross-sectional schematic among Fig. 2.
Fig. 4 is the II-II cross-sectional schematic among Fig. 2.
Among the figure: 1-is responsible for, the 2-arm, and the 3-concrete, 4-cuts off steel plate, the 5-circular hole, the 6-steam vent, the 7-joining, 8-props up tube's axis.
The specific embodiment
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs., elaborates as follows.
With reference to figure 1 ~ 4; A kind of concrete-filled steel tube truss is prevented the unsticking node; Comprise and be responsible for 1, be filled in and be responsible for the concrete 3 in 1 and be welded on the arm of being responsible on 1 outer wall 2, the said person in charge's 1 tube wall with the join domain of arm 2 in offer and be convenient to be responsible for the through hole that 1 inner concrete 3 gets in the arms 2, said through hole is a circular hole 5; Diameter D1=(0.5 ~ 0.7) d of said circular hole 5, d is the internal diameter of arm 2.
In the present embodiment, said arm 2 inwalls are welded with the partition steel plate 4 that is used to block concrete 3, and said partition steel plate 4 is welded on arm 2 inwalls and highly locates from being responsible for 1 outer wall h, h=(1 ~ 1.5) D wherein, and D is the external diameter of arm 2; For the ease of construction, offer steam vent 6 on the said partition steel plate 4.
With reference to figure 1 ~ 4; Present embodiment also provides the job practices of the anti-unsticking node of a kind of concrete-filled steel tube truss; Carry out according to the following steps: (1) confirm to be responsible for 1 with the tubular joint welding region of arm 2, and be that a through hole is offered at the center with the joining 7 of being responsible for 1 outer wall with a tube's axis 8; (2) at partition steel plate 4 that has steam vent 6 of arm 2 inwalls welding; (3) arm 2 is passed through welding mutually with the person in charge 1; (4), make concrete 3 get in the arms 2 and and block by cutting off steel plate 4 toward the person in charge's 1 interior concrete perfusion 3.
In the present embodiment, the through hole in the step (1) is a circular hole 5, said circular hole 5 diameter D1=(0.5 ~ 0.7) d, and d is the internal diameter of arm 2; Partition steel plate 4 in the step (2) is welded on arm 2 inwalls and highly locates from being responsible for 1 outer wall h, h=(1 ~ 1.5) D wherein, and D is the external diameter of arm 2.
Need to prove especially, is example with an arm 2 only in the embodiment of the invention, for being responsible for 1 node area the situation of many arms 2 is arranged, and the form of structure of its connection and job practices are similarly.
The above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (8)
1. a concrete-filled steel tube truss is prevented the unsticking node; Comprise the person in charge, be filled in the concrete in being responsible for and be welded on the arm of being responsible on the outer wall, it is characterized in that: said person in charge's tube wall with the join domain of arm in offer and be convenient to be responsible for inner concrete and get into the through hole in the arm.
2. concrete-filled steel tube truss according to claim 1 is prevented the unsticking node, it is characterized in that: said branch pipe wall is welded with and is used to block concrete partition steel plate.
3. concrete-filled steel tube truss according to claim 2 is prevented the unsticking node, it is characterized in that: offer steam vent on the said partition steel plate.
4. according to the anti-unsticking node of claim 2 or 3 described concrete-filled steel tube trusses, it is characterized in that: said partition steel plate is welded on branch pipe wall and highly locates from being responsible for outer wall h, h=(1 ~ 1.5) D wherein, and D is an external diameter of pipe.
5. concrete-filled steel tube truss according to claim 1 is prevented the unsticking node, it is characterized in that: said through hole is a circular hole, said Circularhole diameter D1=(0.5 ~ 0.7) d, and d is a bore.
6. the job practices of the anti-unsticking node of a concrete-filled steel tube truss is characterized in that, carries out according to the following steps: the tubular joint welding region with arm is confirmed to be responsible in (1), and is that a through hole is offered at the center with a tube's axis with the joining of being responsible for outer wall; (2) at partition steel plate that has steam vent of branch pipe wall welding; (3) arm is passed through welding mutually with the person in charge; (4), make concrete get in the arm and and block by cutting off steel plate toward the interior concrete perfusion of the person in charge.
7. the job practices of the anti-unsticking node of concrete-filled steel tube truss according to claim 6, it is characterized in that: the through hole in the step (1) is a circular hole, said Circularhole diameter D1=(0.5 ~ 0.7) d, d is a bore.
8. the job practices of the anti-unsticking node of concrete-filled steel tube truss according to claim 6 is characterized in that: the partition steel plate in the step (2) is welded on branch pipe wall and highly locates from being responsible for outer wall h, h=(1 ~ 1.5) D wherein, and D is an external diameter of pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210242418.4A CN102733493B (en) | 2012-07-13 | 2012-07-13 | Concrete filled steel tube truss anti-debonding node, and construction method of concrete filled steel tube truss anti-debonding node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210242418.4A CN102733493B (en) | 2012-07-13 | 2012-07-13 | Concrete filled steel tube truss anti-debonding node, and construction method of concrete filled steel tube truss anti-debonding node |
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| Publication Number | Publication Date |
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| CN102733493A true CN102733493A (en) | 2012-10-17 |
| CN102733493B CN102733493B (en) | 2014-06-25 |
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| CN201210242418.4A Expired - Fee Related CN102733493B (en) | 2012-07-13 | 2012-07-13 | Concrete filled steel tube truss anti-debonding node, and construction method of concrete filled steel tube truss anti-debonding node |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281400A (en) * | 2018-09-27 | 2019-01-29 | 中北大学 | A large-span space node and construction method of an external concrete-filled steel tube structure |
| CN111173194A (en) * | 2020-02-21 | 2020-05-19 | 东南大学 | FRP truss node structure and implementation method thereof |
| CN111749130A (en) * | 2019-03-26 | 2020-10-09 | 四川省公路规划勘察设计研究院有限公司 | Design method for improving fatigue strength of CFST intersecting welded joints |
| CN112900472A (en) * | 2021-01-21 | 2021-06-04 | 中国电建集团华东勘测设计研究院有限公司 | High-strength grouting pipe joint jacket foundation for offshore wind power and construction method thereof |
Citations (5)
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|---|---|---|---|---|
| GB1517233A (en) * | 1975-05-02 | 1978-07-12 | Hoesch Werke Ag | Connecting members |
| CN85107344A (en) * | 1985-09-30 | 1987-04-15 | 塞加石油科学院 | A kind of manufacture method such as the joint of frame trussed construction tubulose in oil drilling and production platform |
| US4790172A (en) * | 1984-09-21 | 1988-12-13 | Saga Petroleum A.S. | Method for providing a tubular node in a framework truss structure such as offshore platforms for oil drilling and production |
| CN101435227A (en) * | 2008-12-17 | 2009-05-20 | 清华大学 | Filling stainless steel tube component - stainless steel tube welding connection node |
| CN202672357U (en) * | 2012-07-13 | 2013-01-16 | 福州大学 | Anti-unsticking node of concrete-filled steel tubular truss |
-
2012
- 2012-07-13 CN CN201210242418.4A patent/CN102733493B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1517233A (en) * | 1975-05-02 | 1978-07-12 | Hoesch Werke Ag | Connecting members |
| US4790172A (en) * | 1984-09-21 | 1988-12-13 | Saga Petroleum A.S. | Method for providing a tubular node in a framework truss structure such as offshore platforms for oil drilling and production |
| CN85107344A (en) * | 1985-09-30 | 1987-04-15 | 塞加石油科学院 | A kind of manufacture method such as the joint of frame trussed construction tubulose in oil drilling and production platform |
| CN101435227A (en) * | 2008-12-17 | 2009-05-20 | 清华大学 | Filling stainless steel tube component - stainless steel tube welding connection node |
| CN202672357U (en) * | 2012-07-13 | 2013-01-16 | 福州大学 | Anti-unsticking node of concrete-filled steel tubular truss |
Non-Patent Citations (1)
| Title |
|---|
| 王俊华等: "现代钢管桁架桥", 《中外公路》, vol. 26, no. 4, 31 August 2006 (2006-08-31) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281400A (en) * | 2018-09-27 | 2019-01-29 | 中北大学 | A large-span space node and construction method of an external concrete-filled steel tube structure |
| CN111749130A (en) * | 2019-03-26 | 2020-10-09 | 四川省公路规划勘察设计研究院有限公司 | Design method for improving fatigue strength of CFST intersecting welded joints |
| CN111749130B (en) * | 2019-03-26 | 2022-03-15 | 四川省公路规划勘察设计研究院有限公司 | Design method for improving fatigue strength of CFST intersecting welded joints |
| CN111173194A (en) * | 2020-02-21 | 2020-05-19 | 东南大学 | FRP truss node structure and implementation method thereof |
| CN111173194B (en) * | 2020-02-21 | 2022-02-15 | 东南大学 | A kind of FRP truss joint structure and its implementation method |
| CN112900472A (en) * | 2021-01-21 | 2021-06-04 | 中国电建集团华东勘测设计研究院有限公司 | High-strength grouting pipe joint jacket foundation for offshore wind power and construction method thereof |
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| Publication number | Publication date |
|---|---|
| CN102733493B (en) | 2014-06-25 |
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Granted publication date: 20140625 Termination date: 20170713 |