CN101435248B - Self-adapting variable cross-section rectangular steel tube bending component - Google Patents
Self-adapting variable cross-section rectangular steel tube bending component Download PDFInfo
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- CN101435248B CN101435248B CN2008102405100A CN200810240510A CN101435248B CN 101435248 B CN101435248 B CN 101435248B CN 2008102405100 A CN2008102405100 A CN 2008102405100A CN 200810240510 A CN200810240510 A CN 200810240510A CN 101435248 B CN101435248 B CN 101435248B
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Abstract
The invention discloses a self-adaptive variable cross-section rectangular steel pipe bending member, which is a novel member. The member is a rectangular pipe member composed of a lower thin wall plate (1), two side thin wall plates (4), and an upper thin wall plate (5). The inside of the pipe member is fixed with a transverse stiffening rib (2) and a longitudinal stiffening rib (3), wherein the transverse stiffening rib (2) is arranged in the radial direction of the pipe member, and is provided with a cavity. The inside of the pipe member is also provided with a longitudinal stiffening plate (3) which is arranged in axial direction of the pipe member. The section of the longitudinal stiffening rib (3) is in T shape or L shape. The self-adaptive variable cross-section rectangular steel pipe bending member of the invention not only meet the requirements of bearing and shaping, but also can effectively reduce the self weight of the structure to cause the structure to effectively resist the functions of the temperature change, wind load and earthquake.
Description
Technical field
The present invention is the self-adapting variable cross-section rectangular steel tube bending component that is used for building structure, is a kind of new type of component.
Background technology
High speed development along with China's construction work, especially in some super-span structures, a lot of novel building moulding has appearred, their architectural image is very complicated, in order to make Mechanical Builds adapt to the requirement of architectural image, this changes with the variation of the curvature of structure with regard to requiring some members in the structure, these variations comprise that member is crooked and reverse etc., shown in figure (1), bending component has tiltedly, curved, characteristics such as abnormity, at present only in road and bridge engineering Curved Beam Bridge satisfy above characteristics, but Curved Beam Bridge is applied in the building structure to have bigger defective: (1) Curved Beam Bridge can not satisfy reverses requirement; (2) Curved Beam Bridge mostly is ordinary concrete or prestressed reinforced concrete construction greatly, and their deadweight of itself is bigger; (3) concrete contraction, the later stage bearing capacity generation bigger influence of meeting of creeping to structure or member.In addition after adopting these bending components in the structure, because the geometry particularity of these members, the axial force of member will cause producing very big curvature effect, make the stressed very complicated of member, the force difference of each position of member is bigger, and the bearing capacity that therefore how to satisfy each position of member becomes bending component design aspect urgent problem.
In addition because the bending component geometric configuration is special, particularly in order to alleviate the deadweight of structure, bending component can adopt the Steel Thin-Wall member, a lot of Chinese scholars has been done reasonable research to the welding thin-wall member, and in using, engineering obtained reasonable effect, it has bigger advantage aspect the deadweight that alleviates structure, but they are used for structure bigger defective is arranged equally: for example the flakiness ratio of large scale thin-walled square-section is bigger, local buckling takes place easily, pertinent regulations according to " Code for design of steel structures ", the effective width in cross section is very little, and stock utilization is lower.Under the welding effect, may produce bigger stress in addition and concentrate, so local bent bending appear in curved panel piece easily, therefore when carrying out the design of thin-walled bending component, must solve an above difficult problem.
The development of current Building technology is maked rapid progress, and architectural image is also ever-changing, and invent a kind of space bending component that can the commensurate structure variation is a necessary link.
Summary of the invention
In order to address the above problem, the invention provides a kind of self-adapting variable cross-section rectangular steel tube bending component, this member both can adapt to moulding and the force request in the building structure, can give full play to the advantage of thin-wall member again.
The technical solution used in the present invention is as follows: the spatial warping rectangular steel pipe member among the present invention, the cross section that the thin-walled part of serving as reasons down, two side thin-walled parts and last thin-walled part surround is the tubular element of rectangle.Described tubular element internal fixation has transverse stiffener and longitudinal stiffener, and transverse stiffener is along the radial arrangement of tubular element, and transverse stiffener is provided with the cavity.
Also be fixed with longitudinal stiffener in described tubular element inside, longitudinal stiffener is axial arranged along tubular element.
The cross section of described longitudinal stiffener is a T shape or L shaped.
The present invention both can be made as the different form of cross-sectional sizes according to moment of flexure, shearing, the difference of axle power and the requirement of moulding aspect that structure is born, can processing and fabricating be the identical form of cross-sectional sizes again, so the cross section of tubular element both can also can be variable cross-section for uniform section.
Self-adapting variable cross-section rectangular steel tube bending component of the present invention not only meets the demands aspect moulding, and can effectively alleviate the structure dead weight.And the size in cross section can adjust according to the actual loading situation of member, thereby can save material effectively, and makes Mechanical Builds more attractive in appearance.The face that transverse stiffener has effectively fettered outside thin-walled plate is out of shape outward, makes the member section stress distribution more even, and is provided with the cavity, can make things convenient for the welding and the processing of component inside.The radius of gyration in longitudinal stiffener cross section is bigger, can reduce the flakiness ratio of plate, and the effective width of increasing section is improved the utilization rate of material, makes structure effectively resist the effect of variations in temperature, wind load and earthquake.
Description of drawings
Fig. 1 is the self-adapting variable cross-section rectangular steel tube bending component schematic appearance;
Fig. 2 is the structure schematic appearance of uniform section rectangular steel tube bending component;
Fig. 3 is a self-adapting variable cross-section rectangular steel tube bending component structure composition diagram;
Fig. 4 is the structure structure composition diagram of uniform section rectangular steel tube bending component;
Fig. 5 is the A-A generalized section of Fig. 3;
Among the figure: 1, following thin-walled part, 2 transverse stiffeners, 3, longitudinal stiffener, 4, the side thin-walled part, 5, go up thin-walled part.
The specific embodiment
Below in conjunction with Fig. 1～Fig. 5 the embodiment of the invention is described in further detail:
Embodiment 1:
The structure of self-adapting variable cross-section rectangular steel tube bending component is formed as Fig. 1, Fig. 3 and shown in Figure 5.It by the following thin-walled plate 1 in the outside, two side thin-walled parts 4, go up thin-walled part 5 and inner transverse stiffener 2 and longitudinal stiffener 3 formed.Following thin-walled part 1, two side thin-walled parts 4 and last thin-walled part 5 have surrounded variable cross-section rectangular tubular member.The cross section is that the tubular element interior welds of rectangle has transverse stiffener 2 and longitudinal stiffener 3, and transverse stiffener 2 is along the radial arrangement of tubular element, and transverse stiffener 2 is provided with the cavity, can make things convenient for the welding and the processing of component inside.Also be fixed with longitudinal stiffener 3 in tubular element inside, longitudinal stiffener 3 is axial arranged along tubular element, and the cross section of longitudinal stiffener 3 is L shaped, as shown in Figure 5.
The following thin-walled part 1 in the outside, two side thin-walled parts 4 and last thin-walled part 5 are to form by the cutting of structure bending form, bending, and four thin-walled parts are formed the variable cross-section tubulose member that cross sectional shape is a rectangle by the mode of welding.At the transverse stiffener 2 in the band cavity that the interior welds of thin-walled tubular element is arranged at a certain distance, the cavity can make things convenient for the welding of component inside.Along member the bigger longitudinal stiffener of radius of gyration 3 is set vertically, the cross sectional shape of longitudinal stiffener 3 can be T shape or L shaped.In the present embodiment: member can change the size in cross section according to the stressed and modeling requirement of reality on the one hand, the bending component inside be made up of the side thin-walled part of member is provided with transverse stiffener 2 and longitudinal stiffener 3 on the other hand, the triple interaction makes member form a proportional space stress system like this, and inner stiffening rib is the bearing capacity and the rigidity of reinforcement effectively.
During member in the processing and fabricating present embodiment, at first the geometric configuration of member is simplified, adopt the method for segmental machining to make, axis is made respectively separately in the part on a plane, make each cross section of member can both keep rectangle, at last the mode of the member of segmental machining by welding combined, just formed spatial warping square-section steel tube component.
Its concrete preparation method is as follows:
1) the required following thin-walled part 1 of member assembling, side thin-walled part 4 cut, bent out, thin-walled part 5 and inner transverse stiffener 2, longitudinal stiffener 3 gone up;
2) member is carried out space orientation, install mould, the mould that is assembled in of member carries out;
3) member is assembled, selected member thin-walled part is assembled as the bottom wing listrium during assembling, and as shown in Figure 5: thin-walled part 1 is as the bottom wing listrium, as shown in Figure 5 under selecting in the present embodiment;
4) at first on mould, bottom wing listrium 1 is accurately located, guarantee that bottom wing listrium 1 has reliable the connection with mould.Then the transverse stiffener 2 and the longitudinal stiffener 3 of component inside are accurately located the side thin-walled part 4 of assembled component both sides on bottom wing listrium 1;
5) adopt rational welding sequence to carry out the welding of component inside, promptly weld the weld seam between the side thin-walled part 4 of transverse stiffener 2 and longitudinal stiffener 3 and following thin-walled part 1 and both sides;
6) then member is carried out shrouding, thin-walled part 5 in the lifting, the weld seam between welding top flange 5 and the inner stiffening rib 2;
7) after four corner angle weld seams between the thin-walled part in the member outside are finished in welding at last, promptly constituted spatial warping rectangular steel pipe member;
8) member of segmental machining is combined by welding manner just formed spatial warping rectangular steel pipe member.
Embodiment 2:
The structure of present embodiment is substantially the same manner as Example 1, and difference only is: the tubular element among the present invention is the uniform section member, and as Fig. 2, shown in Figure 4, also having the cross sectional shape of longitudinal stiffener 3 in the present embodiment is T shape.
Claims (4)
1. self-adapting variable cross-section rectangular steel tube bending component, the cross section that the thin-walled part of serving as reasons down (1), two side thin-walled parts (4) and last thin-walled part (5) surround is the tubular element of rectangle; It is characterized in that: described tubular element internal fixation has transverse stiffener (2) and longitudinal stiffener (3), and transverse stiffener (2) is along the radial arrangement of tubular element, and transverse stiffener (2) is provided with the cavity.
2. self-adapting variable cross-section rectangular steel tube bending component according to claim 1,, it is characterized in that: also be fixed with longitudinal stiffener (3) in described tubular element inside, longitudinal stiffener (3) is axial arranged along tubular element.
3. self-adapting variable cross-section rectangular steel tube bending component according to claim 2 is characterized in that: the cross section of described longitudinal stiffener (3) is a T shape or L shaped.
4. according to claim 1 or claim 2 or the described self-adapting variable cross-section rectangular steel tube bending component of claim 3, it is characterized in that: the cross section of described tubular element is uniform section or variable cross-section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102405100A CN101435248B (en) | 2008-12-19 | 2008-12-19 | Self-adapting variable cross-section rectangular steel tube bending component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102405100A CN101435248B (en) | 2008-12-19 | 2008-12-19 | Self-adapting variable cross-section rectangular steel tube bending component |
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| Publication Number | Publication Date |
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| CN101435248A CN101435248A (en) | 2009-05-20 |
| CN101435248B true CN101435248B (en) | 2011-12-07 |
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| CN107009097A (en) * | 2017-04-28 | 2017-08-04 | 中国二十冶集团有限公司 | The preparation method of large-scale bending steel stair |
| CN111185726B (en) * | 2020-01-15 | 2021-07-23 | 中国十七冶集团有限公司 | Variable cross-section transition construction method for arc square tube |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201347602Y (en) * | 2008-12-19 | 2009-11-18 | 中国建筑设计研究院 | Self-adapting variable-section rectangular steel tube crankle component |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201347602Y (en) * | 2008-12-19 | 2009-11-18 | 中国建筑设计研究院 | Self-adapting variable-section rectangular steel tube crankle component |
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Granted publication date: 20111207 Termination date: 20131219 |