CN103077276A - Design method for preset internal force of space steel structure - Google Patents
Design method for preset internal force of space steel structure Download PDFInfo
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- CN103077276A CN103077276A CN2013100038729A CN201310003872A CN103077276A CN 103077276 A CN103077276 A CN 103077276A CN 2013100038729 A CN2013100038729 A CN 2013100038729A CN 201310003872 A CN201310003872 A CN 201310003872A CN 103077276 A CN103077276 A CN 103077276A
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Abstract
The invention discloses a design method for the preset internal force of a space steel structure, which is characterized by comprising the following steps of: (1) analyzing the internal force of a space steel structure according to a conventional method; (2) finding actual or expected leading stressed components or component sets and arranging the components or the component sets so as to form a local structure; (3) arranging pull ropes at proper positions and applying prestressing force to the components or the component sets so as to generate stress opposite to the action of a main load in the specific components; and (4) installing the residual components so as to form an integral space steel structure and calculating the internal force of the integral structure; if the internal force of the integral structure conforms to the requirement, finishing the design of the preset internal force; and if the internal force of the integral structure does not conform to the requirement, repeating the steps 1 to 4. According to the method disclosed by the invention, the force of a space steel structure can be transferred according to a path predetermined by a designer, so that the aims that the stress of the structure is uniform and the steel consumption of the space steel structure is obviously decreased are achieved.
Description
Technical field
The present invention relates to the architectural design technical field, relate in particular to a kind of interior hydraulic design method of preset of complex space steel construction.
Background technology
The future development that Modern Steel Structure is large towards span, shape is various, outward appearance is light and handy; And all moulding that proposed by architect, artist, the needs that always can not meet power transmission rational in infrastructure, as still designing by classic method, may make that structure stress is extremely unreasonable, the distributed pole of internal force between member is inhomogeneous, thereby affect the realization of architectural image and the safe and reliable and economy of structure.
Summary of the invention
The present invention seeks to: provide a kind of interior hydraulic design method of preset of spatial steel structure, so that the path power transmission that spatial steel structure can be scheduled to by the deviser to a certain extent evenly, obviously reduces the spatial steel structure steel using amount thereby reach structure stress.
Technical scheme of the present invention is:
Hydraulic design method in a kind of preset of spatial steel structure is characterized in that, may further comprise the steps:
Step 1: set up the spatial steel structure three-dimensional model, according to a conventional method the internal force of analysis space steel construction;
Step 2: find topmost primary structure member actual or that determine hope, arrange that described member forms partial structurtes;
Step 3: arrange drag-line at correct position, and the described drag-line of stretch-draw applies prestress to above-mentioned particular elements;
Step 4: remaining member is installed is formed complete spatial steel structure, calculate one-piece construction internal force, as meet the requirements and then finish the design of preset internal force, such as undesirable then repeating step 1 to step 4.
Hydraulic design method in the preset of spatial steel structure according to claim 1 is characterized in that, the internal force of the steel construction of conventional method analysis space described in the described step 1 refer to described spatial steel structure three-dimensional model apply dead load, mobile load carries out primary Calculation.
Further, actual topmost primary structure member refers to the analysis result of step 1 gained described in the step 2, and the topmost primary structure member of hope refers to that the deviser wishes to bring into play the more member of Main Function;
Further, prestress described in the step 3 refers to described particular elements is applied dead load, internal force that live loading power is opposite.
Capable of regulating changed the member that original member or residue are installed when further, repeating step described in the step 41 was to step 4.
The capable of regulating change applied prestressed order to described particular elements when further, repeating step described in the step 41 was to step 4.
Further, described member also can be component set.
To spatial steel structure, analyze according to a conventional method its internal force first, find topmost primary structure member actual or that wish; Then arrange that this partial component forms partial structurtes, and arrange drag-line in proper site that the stretch-draw drag-line makes the member that originally is subject to larger internal force or the main bearing member of hope be subjected in advance first opposite force; Another part member is installed is formed complete structure.The process of " mounting portion member-apply prestress-installation another part member " can repeatedly be carried out repeatedly, comes thus in advance adjustment structure internal force, and main internal force is transmitted by the path that the deviser wishes.
Also having a kind of situation is analytical structure internal force according to a conventional method, discovery has part-structure internal force large especially, then in model, cancel first this part rod member, arrange drag-line in proper site, the stretch-draw drag-line makes structure stress, and then installation did not before have the part rod member of installation, repeatedly repeat this process, then can regulate the stressed of the king-sized rod member of original internal force, main internal force is transmitted by the path that the deviser wishes.
Advantage of the present invention is:
Compare with the method for designing of conventional steel structure, the present invention has integrated the measures such as dress after member erection sequence, prestress, the particular elements, the assembly unit of zero stress section, the internal force that one-piece construction is produced carries out different distributions, come internal force in the implementation structure to the direction transmission of deviser expectation, thereby reach the effect of more reasonable power transmission, structure economics.The present invention can be used for various complex space steel constructions, as for the deadweight that accounts for the structural internal force larger specific gravity and accumulated snow load, go ahead of the rest in member by applying prestress in adjustment means erection sequence, the installation process, rear dress partial component forms one-piece construction, the member that bears larger internal force under vertical perseverance, live loading is passed part internal force to drag-line in advance, both brought into play the superiority of drag-line Materials with High Strength, reduced again the deadweight of span centre member, thereby optimized the distribution of internal force in one-piece construction, saved material, reduced cost.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is the FB(flow block) of embodiment.
Embodiment
Embodiment:
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for explanation the present invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete engineering, and not marked implementation condition is generally the condition in the normal experiment.
As shown in Figure 1, hydraulic design method in a kind of preset of spatial steel structure, can carry out as follows:
1. structural elements is arranged, sets up the Long-span Spatial Structures model;
2. apply dead load, mobile load carries out the primary Calculation structural internal force;
3. find out the member of stressed maximum or hope main bearing member, determine main Force transmission parts set;
4. installation member applies prestressed Path of Force Transfer and power transmission scope to stipulate next step after determining;
To the Force transmission parts on main Path of Force Transfer set install or apply by particular order prestress make produce in the predetermined member with structure dead load, live loading under opposite internal force;
6. the uninstalled member in front or component set are installed are formed one-piece construction;
7. calculate one-piece construction internal force;
8. selected member cross section;
9. whether judged result is satisfied with, otherwise gets back to for the 5th step, re-starts and adjusts the internal force structure; Then to finish for the 10th step;
10. finish the design of the preset internal force of spatial steel structure.
?
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.
Claims (7)
1. hydraulic design method in the preset of a spatial steel structure is characterized in that, may further comprise the steps:
Step 1: set up the spatial steel structure three-dimensional model, according to a conventional method the internal force of analysis space steel construction;
Step 2: find topmost primary structure member actual or that determine hope, arrange that described member forms partial structurtes;
Step 3: arrange drag-line at correct position, and the described drag-line of stretch-draw applies prestress to above-mentioned topmost primary structure member;
Step 4: remaining member is installed is formed complete spatial steel structure, calculate one-piece construction internal force, as meet the requirements and then finish the design of preset internal force, such as undesirable then repeating step 1 to step 4.
2. hydraulic design method in the preset of spatial steel structure according to claim 1, it is characterized in that, the internal force of the steel construction of conventional method analysis space described in the described step 1 refer to described spatial steel structure three-dimensional model apply dead load, mobile load carries out primary Calculation.
3. hydraulic design method in the preset of spatial steel structure according to claim 2, it is characterized in that, actual topmost primary structure member refers to the analysis result of step 1 gained described in the step 2, and the topmost primary structure member of hope refers to that the deviser wishes to bring into play the more member of Main Function.
4. hydraulic design method in the preset of spatial steel structure according to claim 3 is characterized in that, prestress described in the step 3 refers to described topmost primary structure member is applied and dead load, internal force that live loading power is opposite.
5. hydraulic design method in the preset of spatial steel structure according to claim 4 is characterized in that, repeating step described in the step 41 during to step 4 capable of regulating change the member that topmost primary structure member or residue are installed.
6. hydraulic design method in the preset of spatial steel structure according to claim 5 is characterized in that, repeating step described in the step 41 during to step 4 the capable of regulating change described topmost primary structure member is applied prestressed order.
7. hydraulic design method in the preset of spatial steel structure according to claim 6 is characterized in that described member also can be component set.
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| CN201310003872.9A CN103077276B (en) | 2013-01-07 | 2013-01-07 | The presetting interior hydraulic design method of spatial steel structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709336A (en) * | 2019-10-24 | 2021-04-27 | 深圳市建筑设计研究总院有限公司 | Method for loading torsion member and connecting support |
| CN112709321A (en) * | 2019-10-24 | 2021-04-27 | 深圳市建筑设计研究总院有限公司 | Node connection method of axial stress member |
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| CN101122159A (en) * | 2007-08-31 | 2008-02-13 | 广东省建筑设计研究院 | Steel pipe integral girders for constructing prestressing force and construction method thereof |
| WO2010105594A1 (en) * | 2009-03-14 | 2010-09-23 | Ulrike Weber | Girder made of a one-piece structural steel section |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709336A (en) * | 2019-10-24 | 2021-04-27 | 深圳市建筑设计研究总院有限公司 | Method for loading torsion member and connecting support |
| CN112709321A (en) * | 2019-10-24 | 2021-04-27 | 深圳市建筑设计研究总院有限公司 | Node connection method of axial stress member |
| CN112709321B (en) * | 2019-10-24 | 2022-03-04 | 深圳市建筑设计研究总院有限公司 | Node connection method of axial stress member |
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Address after: 215021 Suzhou Industrial Park, Jiangsu Xinghai street, No. 9 Patentee after: Design group Limited by Share Ltd Address before: 215021 Suzhou Industrial Park, Jiangsu Xinghai street, No. 9 Patentee before: Suzhou Institute of Architectural Design Co., Ltd. |