Prestressed aluminium alloy combined member
阅读说明：本技术 预应力铝合金组合构件 (Prestressed aluminium alloy combined member ) 是由 郭小农 张超众 唐文豪 王丽 宗绍晗 于 2019-09-06 设计创作，主要内容包括：本申请涉及铝合金构件技术领域,提供一种预应力铝合金组合构件,包括一个H形截面杆件、两根预应力拉杆和四个端板。端板一侧为平面,开有异形槽口,与H形截面杆件卡合,其另一侧为圆弧面,与节点连接；预应力拉杆穿过H形截面杆件、端板,通过其两端的螺纹采用螺栓与节点连接。本申请由于预应力拉杆和H形截面构件的组合作用,使得构件在轴压及压弯荷载作用下的稳定承载力提高,可以弥补由于铝合金弹性模量低造成杆件稳定性较差的缺陷,并且可以减少H形截面型材的材料用量,且与传统铝合金板式节点网壳的H形截面杆件相比,这种新型的预应力铝合金组合构件不需要在杆件上开孔,避免了杆件截面削弱,同时也减少了螺栓数量,便于施工。(The application relates to the technical field of aluminum alloy components, and provides a prestressed aluminum alloy combined component which comprises an H-shaped section rod piece, two prestressed pull rods and four end plates. One side of the end plate is a plane, is provided with a special-shaped notch and is clamped with the rod piece with the H-shaped section, and the other side of the end plate is an arc surface and is connected with the node; the prestressed pull rod penetrates through the rod piece with the H-shaped cross section and the end plate and is connected with the node through threads at two ends of the prestressed pull rod by adopting a bolt. This application is because the combined action of prestressing force pull rod and H shape cross-section member for the stable bearing capacity of member under the axial compression and the effect of the load of buckling improves, can compensate because the low relatively poor defect that causes member stability of aluminum alloy elastic modulus, and can reduce the material quantity of H shape cross-section bar, and compare with the H shape cross-section member of traditional aluminum alloy plate formula node latticed shell, this kind of neotype prestressing force aluminum alloy combined member need not trompil on the member, the member cross-section has been avoided weakening, the bolt quantity has also been reduced simultaneously, be convenient for construct.)
1. A prestressed aluminum alloy composite member, characterized in that: comprises a rod piece (1) with an H-shaped section, two prestressed pull rods (2) and four end plates (3);
the H-shaped section rod piece (1) comprises an upper flange plate (1-1), a lower flange plate (1-2), a straight-line vertical plate (1-3), an inverted V-shaped vertical plate (1-4) and a positive V-shaped vertical plate (1-5); the upper flange plate (1-1) and the lower flange plate (1-2) are arranged in parallel up and down, and the upper end and the lower end of the straight vertical plate (1-3) are respectively vertically connected between the upper flange plate (1-1) and the lower flange plate (1-2) through the inverted V-shaped vertical plate (1-4) and the positive V-shaped vertical plate (1-5); a pull rod channel which is communicated back and forth is respectively formed between the upper flange plate (1-1) and the inverted V-shaped vertical plate (1-4) and between the lower flange plate (1-2) and the regular V-shaped vertical plate (1-3);
a prestressed pull rod (2) penetrates through each pull rod channel, threads are arranged at the front end and the rear end of each prestressed pull rod (2) and extend out of the pull rod channel, and the prestressed pull rods (2) are connected with the nodes through the threads at the front end and the rear end of the prestressed pull rods by bolts;
the front end and the rear end of the prestressed pull rod (2) are respectively provided with an end plate (3) in a penetrating way; the end plate (3) is positioned between the end part screw thread of the prestressed pull rod (2) and the H-shaped section rod piece (1), a pull rod through hole for penetrating through the prestressed pull rod (2) is formed in the end plate, and two sides of the end plate are respectively connected with the H-shaped section rod piece (1) and the node.
2. The pre-stressed aluminum alloy composite member as claimed in claim 1, wherein: one side of the end plate (3) is a plane and is provided with a special-shaped notch which is matched and clamped with the upper part or the lower part of the section of the H-shaped section rod piece (1);
the other side of the end plate (3) is an arc surface which is matched with the node of the aluminum alloy single-layer reticulated shell.
3. The pre-stressed aluminum alloy composite member as claimed in claim 2, wherein: the special-shaped notch formed in one side of the end plate (3) comprises a linear notch, an inverted triangular notch and a Y-shaped notch which are sequentially communicated;
the linear notch is matched and adapted with the section of the upper flange plate (1-1) or the lower flange plate (1-2) and transversely penetrates through one side of the end plate (3);
the inverted triangular notch is matched and adapted with the section of the inverted V-shaped vertical plate (1-4) or the section of the regular V-shaped vertical plate (1-5);
the lower end of the Y-shaped notch is open and is matched and adapted with the section of the straight-line-shaped vertical plate (1-3).
4. The pre-stressed aluminum alloy composite member as claimed in claim 3, wherein: the sizes of the lower ends of the linear notch and the Y-shaped notch are 2-4 mm larger than the size of the corresponding section of the end part of the rod piece (1) with the H-shaped section;
the size of the triangular notch is the same as that of the inverted V-shaped vertical plate (1-4) or the regular V-shaped vertical plate (1-5).
5. The pre-stressed aluminum alloy composite member as claimed in claim 1, wherein: the inverted V-shaped vertical plates (1-4) and the regular V-shaped vertical plates (1-5) are in isosceles triangle shapes.
6. The pre-stressed aluminum alloy composite member as claimed in claim 1, wherein: chamfers are processed at the front end part and the rear end part of the upper flange plate (1-1) and the lower flange plate (1-2).
7. The pre-stressed aluminum alloy composite member as claimed in claim 6, wherein: the chamfer angles of the front end and the rear end of the upper flange plate (1-1) and the lower flange plate (1-2) are the same in size.
Technical Field
The application relates to the technical field of aluminum alloy components, in particular to a prestressed aluminum alloy combined component for an aluminum alloy single-layer latticed shell.
Background
The aluminum alloy material has the advantages of light weight, high strength, good corrosion resistance, convenient processing and the like, and is widely applied in the field of structural engineering, in particular to large-span space structures, such as civil public building fields (stadiums, science and technology museums, garden greenhouses and airport high-speed railway terminal stations), industrial bulk storage warehouses (top covers of large-scale dry coal warehouses), petrochemical storage industries (oil storage tank arch, ceilings of sewage treatment plants) and the like.
At present, the more applied aluminum alloy space structure is an aluminum alloy single-layer reticulated shell, the node form is a plate type node, and the upper flange and the lower flange of the rod piece are connected with the node cover plate through a plurality of bolts, so that the requirement on the machining precision is high. The existing research shows that as more bolt holes are required to be formed in the flange end part of the rod piece and the node plate, the section is weakened, and the rod piece at the bolt hole and the block-shaped pulling shear damage of the node cover plate are often generated in the node under the load action. And because the elastic modulus of the aluminum alloy is only 1/3 of steel, the aluminum alloy member has a prominent stability problem under the action of axial compression and bending load. The above problems limit further applications of the aluminum alloy plate type node reticulated shell, and therefore, a new component form which is suitable for the characteristics of the aluminum alloy material and is convenient to construct is urgently needed to be developed.
Disclosure of Invention
The utility model aims to overcome prior art's not enough, provide a prestressing force aluminum alloy composite member, can be used for aluminum alloy individual layer latticed shell structure for the stable bearing capacity of member under the bearing capacity effect of axle load and bending improves, in order to remedy because the low relatively poor defect of member stability that causes of aluminum alloy elastic modulus.
In order to achieve the above object, the present application provides the following technical solutions:
a prestressed aluminium alloy combined member is composed of a rod with H-shaped cross-section, two prestressed pull rods and four end plates.
The H-shaped section rod piece comprises an upper flange plate, a lower flange plate, a linear vertical plate, an inverted V-shaped vertical plate and a positive V-shaped vertical plate, and the inverted V-shaped vertical plate and the positive V-shaped vertical plate are in isosceles triangle shapes; the upper flange plate and the lower flange plate are arranged in parallel up and down, and the upper end and the lower end of the straight vertical plate are respectively and vertically connected between the upper flange plate and the lower flange plate through the inverted V-shaped vertical plate and the positive V-shaped vertical plate; and a pull rod channel which is communicated from front to back is respectively formed between the upper flange plate and the inverted V-shaped vertical plate and between the lower flange plate and the regular V-shaped vertical plate, a prestressed pull rod is respectively penetrated in the pull rod channel, the front end and the rear end of the prestressed pull rod are respectively provided with threads and extend out of the pull rod channel, and the prestressed pull rod is connected with the node through the threads at the front end and the rear end of the prestressed pull rod by adopting bolts.
In order to facilitate the connection of the H-shaped section rod piece and the node, chamfers are machined at the front end part and the rear end part of the upper flange plate and the lower flange plate, and the front end part and the rear end part of the upper flange plate and the lower flange plate after the chamfers are all in an isosceles trapezoid shape, so that the section size of the end part of the H-shaped section rod piece is reduced, and the connecting node is not too large.
An end plate is respectively arranged at the front end and the rear end of the prestressed pull rod in a penetrating way, and the end plate is positioned between the end part thread of the prestressed pull rod and the rod piece with the H-shaped section; the end plate is connected with the H-shaped section rod piece through one side of the end plate and is connected with the node through the other side of the end plate; one side of the end plate is a plane, and is provided with a special-shaped notch matched with the upper part or the lower part of the section of the rod piece with the H-shaped section, and the special-shaped notch is clamped with the upper part or the lower part of the section of the rod piece with the H-shaped section; the other side of the end plate is an arc surface which is matched with the node of the aluminum alloy single-layer reticulated shell and is connected with the node cylinder column of the aluminum alloy single-layer reticulated shell.
In order to facilitate the penetration of the prestress pull rod, a pull rod through hole is also formed in the special-shaped notch of the end plate and penetrates through the front side and the rear side of the end plate.
In the application, the H-shaped section rod piece, the prestressed pull rod and the end plate are all made of aluminum alloy materials, and the material used for the prestressed pull rod is high-strength aluminum alloy.
Compared with the prior art, the beneficial effects of this application are:
this application is because the combined action of prestressing force pull rod and H shape cross-section member for the stable bearing capacity of member under the axial compression and the effect of the load of buckling improves, can compensate because the low relatively poor defect that causes member stability of aluminum alloy elastic modulus, and can reduce the material quantity of H shape cross-section bar, and compare with the H shape cross-section member of traditional aluminum alloy plate formula node latticed shell, this kind of neotype prestressing force aluminum alloy combined member need not trompil on the member, the member cross-section has been avoided weakening, the bolt quantity has also been reduced simultaneously, be convenient for construct.
Drawings
FIG. 1 is a general schematic view of a prestressed aluminum alloy composite member according to an embodiment of the present disclosure;
FIG. 2 is an assembly view of a prestressed aluminum alloy composite member according to an embodiment of the present disclosure
Fig. 3 is a schematic view of a rod member with an H-shaped cross section according to an embodiment of the present application;
FIG. 4 is a schematic view of a prestressed tension rod provided in accordance with an embodiment of the present application;
FIG. 5a is a schematic view of one side of an end plate according to an embodiment of the present application;
fig. 5b is a schematic view of the other side of the end plate according to the embodiment of the present application.
Description of the reference numerals
The device comprises a rod piece with a 1H-shaped section, a 1-1 upper flange plate, a 1-2 lower flange plate, a 1-3 straight-line-shaped vertical plate, a 1-4 inverted V-shaped vertical plate, a 1-5 positive V-shaped vertical plate, a 2 prestressed pull rod and a 3 end plate.
Detailed Description
The technical solutions provided in the present application will be further described with reference to the following specific embodiments and accompanying drawings. The advantages and features of the present application will become more apparent in conjunction with the following description.
As shown in fig. 1 to 5b, a prestressed aluminum alloy composite member includes a rod member 1 with an H-shaped cross section, two
The H-shaped section rod piece 1 comprises an upper flange plate 1-1, a lower flange plate 1-2, a straight-line-shaped vertical plate 1-3, an inverted V-shaped vertical plate 1-4 and a positive V-shaped vertical plate 1-5, wherein the inverted V-shaped vertical plate 1-4 and the positive V-shaped vertical plate 1-5 are in isosceles triangle shapes; the upper flange plate 1-1 and the lower flange plate 1-2 are arranged in parallel up and down, the upper end and the lower end of the straight vertical plate 1-3 are respectively vertically connected between the upper flange plate 1-1 and the lower flange plate 1-2 through the inverted V-shaped vertical plate 1-4 and the positive V-shaped vertical plate 1-5, namely the upper flange plate 1-1 is connected to the upper end of the straight vertical plate 1-3 through the inverted V-shaped vertical plate 1-4, and the lower flange plate 1-2 is connected to the lower end of the straight vertical plate 1-3 through the positive V-shaped vertical plate 1-3; a pull rod channel which is communicated from front to back is respectively formed between the upper flange plate 1-1 and the inverted V-shaped vertical plate 1-4 and between the lower flange plate 1-2 and the regular V-shaped vertical plate 1-3, a
In order to facilitate the connection of the rod piece 1 with the H-shaped section and the node, chamfers are processed at the front end part and the rear end part of the upper flange plate 1-1 and the lower flange plate 1-2; in a preferred embodiment, the chamfers of the front and rear end portions of the upper flange plate 1-1 and the lower flange plate 1-2 are the same in size, and the front and rear end portions of the chamfered upper flange plate 1-1 and lower flange plate 1-2 are all in an isosceles trapezoid shape, so that the sectional size of the end portion of the H-shaped section bar 1 is reduced, and the connecting node is not too large.
The front end and the rear end of the
The special-shaped notch formed in one side of the
In order to enable the H-shaped section rod piece 1 to be conveniently clamped in the
In order to facilitate the penetration of the
The application provides a prestressed aluminum alloy combined component, and the concrete assembly method is as follows:
(1) clamping the special-shaped notch on one side of the
(2) the
(3) and (3) extending the
The above description is only illustrative of the preferred embodiments of the present application and is not intended to limit the scope of the present application in any way. Any changes or modifications made by those skilled in the art based on the above disclosure should be considered as equivalent effective embodiments, and all the changes or modifications should fall within the protection scope of the technical solution of the present application.
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