CN104234190A - Designing method for reinforced floor chord member of pipe truss structure - Google Patents
Designing method for reinforced floor chord member of pipe truss structure Download PDFInfo
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- CN104234190A CN104234190A CN201410467766.0A CN201410467766A CN104234190A CN 104234190 A CN104234190 A CN 104234190A CN 201410467766 A CN201410467766 A CN 201410467766A CN 104234190 A CN104234190 A CN 104234190A
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- chord member
- truss structure
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Abstract
The invention belongs to the technical field of steel structure buildings, and particularly relates to a designing method for a reinforced floor chord member of a pipe truss structure. The method comprises the following steps of 1) performing stress analysis on the whole spatial pipe truss structure under each load working condition; 2) analyzing extracted internal stress; 3) reinforcing the floor chord member in a way of arranging crossed reinforcing plates; 4) segmenting pipe trusses, and performing V-shaped groove formation treatment on a reinforced section of the floor chord member by using a cutter; 5) after accurately positioning, fixedly welding the end parts of the crossed reinforcing plates on column base bottom plates through V-shaped grooves; 6) inserting the crossed reinforcing plates into the grooves of the reinforced section of the floor chord member, and fixedly connecting the crossed reinforcing plates with the grooves in a penetration welding way. According to the method, the vicious cycle that the sectional bending stiffness is sharply increased due to the increase of the wall thickness or the pipe diameter of the chord member to further cause stronger stress on the reinforced section of the chord member is effectively avoided.
Description
Technical field
The invention belongs to steel building technical field, the reinforced method for designing of landing chord member being specifically related to a kind of tube truss structure.
Background technology
Tube truss structure is a kind of unique texture system utilizing the superior stress performance of steel pipe and external styling attractive in appearance to form, this system can meet the up-to-date designing axiom of steel work well, is also one of important symbol of the national building science and technology level of measurement one.
When carrying out the design of tube truss structure, the problem that rod member internal force and sectional dimension are difficult to coordinate often can be run into.When the employing of tubular truss suspension column has just connect design, often there is larger axle power and moment of flexure in the chord member being arranged in the section of landing, and axle power plays control action.Consider the loading characteristic of the section of landing chord member and the importance to total safety, often need to strengthen the rod member at this position, in engineering, usually adopt the method increasing rod member wall thickness or strengthen chord member external diameter.
But above two kinds of strengthening forms, the bending rigidity of strengthening segment can be increased substantially while increasing bar cross section axial rigidity, and the increase of local rod member rigidity in structure, the change of structural stiffness matrix can be caused, thus causing rod member internal force to redistribute, strengthening segment chord member is comparatively large due to the amplification of bending rigidity, and the moment of flexure meeting that can be assigned in chord member obviously increases, therefore, actual stiffening effect is not remarkable.In addition, the conference that adds of strengthening segment chord member external diameter has influence on outward appearance locally, is difficult to the requirement meeting architectural image.
In sum, the reinforced method for designing of landing chord member that the present inventor provides a kind of tube truss structure, this case produces thus.
Summary of the invention
The reinforced method for designing of landing chord member that the object of the present invention is to provide a kind of tube truss structure, this chord member preparation method can improve the axial rigidity of the tubular truss section of landing effectively.
For achieving the above object, concrete technical scheme of the present invention is: a kind of reinforced chord member method for designing of landing of tube truss structure, specifically comprises the steps:
1), to whole space pipe truss structure carry out the force analysis under each load case, extract stressedly not meet the demands, need to carry out to strengthen land the internal force of chord member of truss under the most unfavorable processing condition;
2), to the internal force extracted analyze, judge that axial force and moment of flexure are to the contribution proportion of rod member stress;
3), when rod member axial force start to control and make the used time, the method that arranges cross-stiffened plate can be adopted to strengthen landing chord member, and the thickness of cross-stiffened plate is determined according to the size of axial force; The length of cross-stiffened plate is determined according to the axle power distribution of chord member;
4), according to the tubular truss segmentation of reality, cutting machine is utilized to carry out the slot treatment of double V-groove by landing chord member strengthening segment;
5), accurately behind location, by cross-stiffened plate end by double V-groove solid welding due to column root-plate;
6), by land chord member strengthening segment notch insert cross-stiffened plate, and by penetration weld tap into row be connected and fixed; Land the end of chord member strengthening segment and carry out penetration with column root-plate by monolateral double V-groove and weld, complete and land the assembling of chord member and pedestal embedded part.
Beneficial effect of the present invention: the reinforced method for designing of landing chord member that a kind of tube truss structure is provided, the method can improve the axial rigidity of the tubular truss section of landing effectively, bending rigidity amplification is very little simultaneously, efficiently avoid the vicious circle that the reinforcing member moment of flexure that causes because localized bending stiffness significantly increases increases thereupon, can improve the distribution of whole tube truss structure stiffness matrix well, structure stress is more reasonable; The present invention effectively avoids increasing chord member wall thickness or adding the cross section bending rigidity that Large Diameter Pipeline causes sharply increasing, and then causes the stressed larger vicious circle of strengthening segment chord member.
Accompanying drawing explanation
Fig. 1 is the typical project schematic diagram that the present invention is suitable for;
?fig. 2 is single Pin tube truss structure schematic diagram that the present invention is suitable for;
Fig. 3 is the reinforced chord member structural representation that lands of the present invention;
Fig. 4 is cross-stiffened plate and land chord member and weld schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described in detail.
Shown in composition graphs 1, the typical space tube truss structure that the present invention is suitable for is made up of multiple single Pin tubular truss 1, ring truss and attached rod member.Shown in composition graphs 2, single Pin tubular truss is made up of upper chord 2, web member 3, lower chord 4, and single Pin tubular truss 1 is provided with the reinforced chord member 5 that lands of the present invention with earth surface place.
Shown in composition graphs 3, a kind of reinforced chord member 5 that lands of tubular truss 1 structure, it comprises strengthening segment 6, and strengthening segment 6 offers four flutings 7, cross-stiffened plate 8 is welded in and lands in the notch of chord member strengthening segment 6; The reinforced welding manner landing chord member is all penetration welding, and the reinforced chord member 5 that lands is installed on single Pin tubular truss 1.
As Figure 1-4, a kind of tube truss structure reinforced that what the present invention disclosed is lands the method for designing of chord member, specifically comprises the steps:
1), to whole space pipe truss structure carry out the force analysis under each load case, extract stressedly not meet the demands, need to carry out to strengthen land the internal force of chord member of truss 5 under the most unfavorable processing condition;
2), to the internal force extracted analyze, judge that axial force and moment of flexure are to the contribution proportion of rod member stress;
3), when rod member axial force start to control and make the used time, the method that arranges cross-stiffened plate 8 can be adopted to strengthen landing chord member 5, and the thickness of cross-stiffened plate is determined according to the size of axial force; The length of cross-stiffened plate is determined according to the axle power distribution of chord member;
4), according to tubular truss 1 segmentation of reality, chord member 5 strengthening segment 6 will be landed after factory locates accurately, and process landing the fluting 7 that chord member 5 strengthening segment 6 utilizes cutting machine to carry out double V-groove;
5), accurately behind location, by cross-stiffened plate 8 end by double V-groove solid welding due to column root-plate 9;
6), by landing the notch 7 of chord member strengthening segment insert cross-stiffened plate 8, and tap into row by penetration weld and be connected and fixed; Land the end of chord member 5 strengthening segment 6 and carry out penetration with column root-plate 9 by monolateral double V-groove 10 and weld, complete and land the assembling of chord member 5 and pedestal embedded part.
Above-described embodiment and graphic and non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (1)
1. tube truss structure reinforced lands the method for designing of chord member, it is characterized in that, specifically comprises the steps:
1), to whole space pipe truss structure carry out the force analysis under each load case, extract stressedly not meet the demands, need to carry out to strengthen land the internal force of chord member of truss under the most unfavorable processing condition;
2), to the internal force extracted analyze, judge that axial force and moment of flexure are to the contribution proportion of rod member stress;
3), when rod member axial force start to control and make the used time, the method that arranges cross-stiffened plate can be adopted to strengthen landing chord member, and the thickness of cross-stiffened plate is determined according to the size of axial force; The length of cross-stiffened plate is determined according to the axle power distribution of chord member;
4), according to the tubular truss segmentation of reality, cutting machine is utilized to carry out the slot treatment of double V-groove by landing chord member strengthening segment;
5), accurately behind location, by cross-stiffened plate end by double V-groove solid welding due to column root-plate;
6), by land chord member strengthening segment notch insert cross-stiffened plate, and by penetration weld tap into row be connected and fixed; Land the end of chord member strengthening segment and carry out penetration with column root-plate by monolateral double V-groove and weld, complete and land the assembling of chord member and pedestal embedded part.
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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
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| CN104234190A true CN104234190A (en) | 2014-12-24 |
| CN104234190B CN104234190B (en) | 2017-12-01 |
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| CN201410467766.0A Active 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836471A (en) * | 2017-04-01 | 2017-06-13 | 核工业西南勘察设计研究院有限公司 | Strengthen installing pipe |
| CN111519763A (en) * | 2020-04-08 | 2020-08-11 | 浙江省建筑设计研究院 | 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 |
Citations (4)
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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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2014
- 2014-09-15 CN CN201410467766.0A patent/CN104234190B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Non-Patent Citations (2)
| Title |
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| 岳键广: ""H型钢空间钢桁架节点抗震性能试验研究"", 《中国优秀硕士论文全文数据库-工程科技Ⅱ辑》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106836471A (en) * | 2017-04-01 | 2017-06-13 | 核工业西南勘察设计研究院有限公司 | Strengthen installing pipe |
| 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 |
| CN111519763A (en) * | 2020-04-08 | 2020-08-11 | 浙江省建筑设计研究院 | 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 | Publication date |
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| CN104234190B (en) | 2017-12-01 |
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