CN104234190B - A kind of design method of the reinforced landing chord member of tube truss structure - Google Patents
A kind of design method of the reinforced landing chord member of tube truss structure Download PDFInfo
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- CN104234190B CN104234190B CN201410467766.0A CN201410467766A CN104234190B CN 104234190 B CN104234190 B CN 104234190B CN 201410467766 A CN201410467766 A CN 201410467766A CN 104234190 B CN104234190 B CN 104234190B
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- landing
- cross
- strengthening segment
- truss structure
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Abstract
The invention belongs to steel building technical field, and in particular to a kind of design method of the reinforced landing chord member of tube truss structure, methods described comprise the following steps：1）, the force analysis under each load case is carried out to whole space pipe truss structure；2）, the internal force of extraction is analyzed；3）, using set cross-stiffened plate method to landing chord member strengthen；4）, tubular truss segmentation, will land chord member strengthening segment using cutting machine progress double V-groove slot treatment；5）, be accurately positioned after, cross-stiffened plate end is scheduled into column root-plate by double V-groove solid welding；6）, will land chord member strengthening segment notch insertion cross-stiffened plate, and by penetration weld tap into row be connected.It is effectively prevented from section bending rigidity caused by increasing chord member wall thickness or increasing caliber increased dramatically, in turn results in the bigger vicious circle of strengthening segment chord member stress.
Description
Technical field
The invention belongs to steel building technical field, and in particular to a kind of reinforced landing chord member of tube truss structure
Design method.
Background technology
Tube truss structure is unique knot that a kind of superior stress performance and external styling attractive in appearance using steel pipe is formed
Structure system, the system can meet the newest designing axiom of steel construction well, and weigh a national building science and technology
One of horizontal important symbol.
When carrying out the design of tube truss structure, the problem of rod member internal force is difficult to coordinate with sectional dimension is frequently encountered.
When tubular truss suspension column is designed using rigid connection, larger axle power and moment of flexure, and axle often be present in the chord member of landing section
Power plays control action.In view of landing the loading characteristic of section chord member and the importance to total safety, generally require to this
The rod member at position is strengthened, generally use increase rod member wall thickness or the method for increasing chord member external diameter in engineering.
But both the above strengthening form, it can increase substantially strengthening segment while bar cross section axial rigidity is increased
Bending rigidity, and in structure local rod member rigidity increase, the change of structural stiffness matrix can be caused, so as to cause rod member internal force
Redistribute, because the amplification of bending rigidity is larger, the moment of flexure that can be assigned in chord member can substantially increase strengthening segment chord member
Greatly, therefore, actual stiffening effect is not notable.In addition, the increasing of strengthening segment chord member external diameter influences whether local outward appearance, it is difficult
To meet the requirement of architectural image.
In summary, the present inventor provides a kind of design method of the reinforced landing chord member of tube truss structure, this case by
This is produced.
The content of the invention
It is an object of the invention to provide a kind of design method of the reinforced landing chord member of tube truss structure, the chord member system
The axial rigidity of tubular truss landing section can be effectively improved by making method.
To achieve the above object, concrete technical scheme of the invention is：A kind of reinforced landing chord member of tube truss structure
Design method, specifically comprise the following steps：
1）, the force analysis under each load case is carried out to whole space pipe truss structure, extraction stress is unsatisfactory for will
Internal force of the landing chord member of truss ask, needed to be strengthened under the most unfavorable processing condition；
2）, the internal force of extraction is analyzed, judge the contribution proportion of axial force and moment of flexure to rod member stress；
3）, when rod member axial force start to control make the used time, can use set cross-stiffened plate method to landing chord member enter
Row is strengthened, and the thickness of cross-stiffened plate determines according to the size of axial force；The length of cross-stiffened plate is according to the axle power of chord member point
Cloth determines；
4）, according to reality tubular truss be segmented, by land chord member strengthening segment using cutting machine progress double V-groove fluting at
Reason；
5）, be accurately positioned after, cross-stiffened plate end is scheduled into column root-plate by double V-groove solid welding；
6）, will land chord member strengthening segment notch insertion cross-stiffened plate, and by penetration weld tap into row be connected；Fall
The end of ground chord member strengthening segment carries out penetration welding with column root-plate by unilateral double V-groove, completes landing chord member and is buried with suspension column
The assembling of part.
Beneficial effects of the present invention：A kind of design method of the reinforced landing chord member of tube truss structure, this method are provided
The axial rigidity of tubular truss landing section, while bending rigidity amplification very little can be effectively improved, efficiently avoid because office
Portion's bending rigidity be significantly increased and caused by the vicious circle that increases therewith of reinforcing member moment of flexure, whole pipe can be improved well
The distribution of truss structure stiffness matrix, structure stress are more reasonable；It is of the invention effectively to avoid increasing chord member wall thickness or increase pipe
Section bending rigidity increased dramatically caused by footpath, in turn result in the bigger vicious circle of strengthening segment chord member stress.
Brief description of the drawings
Fig. 1 is the applicable typical project schematic diagram of the present invention；
Fig. 2 is the applicable single Pin tube truss structures schematic diagram of the present invention；
Fig. 3 is the reinforced landing chord member structural representation of the present invention；
Fig. 4 is that cross-stiffened plate welds schematic diagram with landing chord member.
Embodiment
Below in conjunction with the accompanying drawings, technical scheme is further described in detail.
With reference to shown in Fig. 1, the applicable typical space tube truss structure of the present invention is by multiple single Pin tubular truss 1, ring truss 20
And attached rod member composition.With reference to shown in Fig. 2, single Pin tubular truss 1 is made up of top boom 2, web member 3, lower boom 4, single Pin tubular truss 1
The reinforced landing chord member 5 of the present invention is installed with ground contact position.
With reference to shown in Fig. 3, a kind of reinforced landing chord member 5 of the structure of tubular truss 1, it includes strengthening segment 6, in strengthening segment 6
Four flutings 7 are offered, cross-stiffened plate 8 is welded in the notch of landing chord member strengthening segment 6；The welding of reinforced landing chord member
Mode is all welded for penetration, and reinforced landing chord member 5 is installed on single Pin tubular truss 1.
As Figure 1-4, the present invention disclose be a kind of tube truss structure reinforced landing chord member design method, tool
Body comprises the following steps：
1）, the force analysis under each load case is carried out to whole space pipe truss structure, extraction stress is unsatisfactory for will
Internal force of the landing chord member of truss 5 ask, needed to be strengthened under the most unfavorable processing condition；
2）, the internal force of extraction is analyzed, judge the contribution proportion of axial force and moment of flexure to rod member stress；
3）, when rod member axial force start to control make the used time, can use set cross-stiffened plate 8 method to land chord member 5
Strengthened, the thickness of cross-stiffened plate determines according to the size of axial force；The length of cross-stiffened plate is according to the axle power of chord member
Distribution determines；
4）, according to reality tubular truss 1 be segmented, will landing the strengthening segment 6 of chord member 5 factory carry out accurately position after, and
The strengthening segment 6 of chord member 5 will be landed to handle using the fluting 7 of cutting machine progress double V-groove；
5）, be accurately positioned after, the end of cross-stiffened plate 8 is scheduled into column root-plate 9 by double V-groove solid welding；
6）, the notch 7 for landing chord member strengthening segment inserted into cross-stiffened plate 8, and row is tapped into by penetration weld and is connected；
The end for landing the strengthening segment 6 of chord member 5 carries out penetration welding with column root-plate 9 by unilateral double V-groove 10, completes landing chord member 5
With the assembling of pedestal embedded part.
Above-described embodiment and schema and non-limiting product form of the invention and style, any art it is common
The appropriate change or modification that technical staff is done to it, it all should be regarded as not departing from the patent category of the present invention.
Claims (1)
1. the design method of the reinforced landing chord member of a kind of tube truss structure, it is characterised in that specifically comprise the following steps：
1）, the force analysis under each load case is carried out to whole space pipe truss structure, extraction stress is unsatisfactory for requiring, needed
Internal force of the landing chord member of truss strengthened under the most unfavorable processing condition；
2）, the internal force of extraction is analyzed, judge the contribution proportion of axial force and moment of flexure to rod member stress；
3）, when rod member axial force start to control make the used time, can use set cross-stiffened plate method to landing chord member add
By force, the thickness of cross-stiffened plate determines according to the size of axial force；The length of cross-stiffened plate is distributed true according to the axle power of chord member
It is fixed；
4）, according to reality tubular truss be segmented, will land chord member strengthening segment using cutting machine progress double V-groove slot treatment；
5）, be accurately positioned after, cross-stiffened plate end is scheduled into column root-plate by double V-groove solid welding；
6）, will land chord member strengthening segment notch insertion cross-stiffened plate, and by penetration weld tap into row be connected；Land string
The end of bar strengthening segment carries out penetration welding with column root-plate by unilateral double V-groove, completes landing chord member and pedestal embedded part
Assembling；
The reinforced landing chord member of the tube truss structure includes strengthening segment, four flutings is offered in strengthening segment, cross is put more energy into
Plate weld is in the notch of landing chord member strengthening segment；It is reinforced landing chord member welding manner all for penetration weld, it is reinforced fall
Ground chord member is installed on single Pin tubular truss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410467766.0A CN104234190B (en) | 2014-09-15 | 2014-09-15 | A kind of design method of the reinforced landing chord member of tube truss structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410467766.0A CN104234190B (en) | 2014-09-15 | 2014-09-15 | A kind of design method of the reinforced landing chord member of tube truss structure |
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| CN104234190A CN104234190A (en) | 2014-12-24 |
| CN104234190B true CN104234190B (en) | 2017-12-01 |
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| CN106836471B (en) * | 2017-04-01 | 2023-11-21 | 核工业西南勘察设计研究院有限公司 | Reinforced mounting tube |
| CN111519763B (en) * | 2020-04-08 | 2021-10-26 | 浙大城市学院 | Oval-like inner-opening large-span outer four-trimming double-roof laminated latticed shell system and application |
| CN113622513A (en) * | 2021-08-11 | 2021-11-09 | 中国建筑第八工程局有限公司 | Inverted-gyro-shaped truss connecting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10219824A (en) * | 1997-02-13 | 1998-08-18 | Taisei Corp | Concrete encased column base for steel pipe column |
| CN202108115U (en) * | 2011-06-03 | 2012-01-11 | 中国民航大学 | Bamboo truss string structure |
| CN202370105U (en) * | 2011-12-13 | 2012-08-08 | 中船第九设计研究院工程有限公司 | Steel pipe truss node plate |
| CN103810308A (en) * | 2012-11-08 | 2014-05-21 | 陶建臣 | CAE-based (computer aided engineering) truss optimized designing method |
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