Composite stiffening structure based on outer gusset plate and outer stiffening rib

Abstract

The utility model belongs to the technical field of steel structure nodes, and discloses a composite stiffening structure based on an outer node plate and an outer stiffening rib, which comprises a transversely arranged main pipe, a main branch pipe is longitudinally mounted at the top of the main pipe, a first included angle and a second included angle are formed between the main pipe and the main branch pipe, and an inclined branch pipe is longitudinally mounted at the bottom of the main pipe. A third included angle and a fourth included angle are formed between the main pipe and the inclined branch pipe; gusset plates are mounted at the first included angle, the second included angle, the third included angle and the fourth included angle; the main pipe, the positive branch pipe and the inclined branch pipe are arranged in a TY shape; the front parts and the rear parts of the main pipe, the front branch pipe and the inclined branch pipe are respectively connected through stiffening ribs; the integral rigidity and the local stability of the plane TY type tubular joint can be effectively improved, so that the ultimate bearing capacity of the joint is effectively improved, and the bearing capacity of the tubular joint meets the construction design requirements of an ultra-high voltage power transmission tower in the future and is not a weak link of the structure any more.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel structure node technical field, concretely relates to a composite stiffening structure based on outer node board and outer stiffening rib. BACKGROUND

[0002] As an important support in the power transmission line, the structural strength and mechanical properties of the power transmission tower are crucial to the safe operation of the power transmission line. Compared with the angle steel tower of the traditional power transmission line, the circular steel pipe tower is generally used in the large-span ultra-high voltage power transmission line because it has the advantages of simple structure, large stiffness, small wind pressure, large section rotation radius, small steel consumption, clear force transmission, good stability and ductility, etc. In the steel pipe structure, the node is located at the intersection of the main material, auxiliary material and inclined material of the steel pipe tower, and is the force transmission hub of the steel pipe tower structure. The damage of the node often leads to the failure of several connected members, thereby causing the destruction of the whole structure, interrupting the power transmission line and affecting the social power supply.

[0003] However, with the encounter of various complex terrains in the construction process of the power transmission tower, the height and the bearing load of the power transmission tower are becoming larger and more complex, and it is often difficult to meet the bearing design requirements by setting the conventional intersecting node.

[0004] In order to improve the bearing capacity and fatigue life of the node, the stiffening rib and the node plate outside the intersecting node are often used to strengthen the node. This measure is convenient and economical, but the ultimate bearing capacity outside the intersecting node is relatively weak, and the effect of improving the bearing capacity is limited. Especially under the construction and design requirements of the high-voltage power transmission tower, the ultimate bearing capacity of the node is still insufficient to meet the requirements. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a composite stiffening structure based on outer node plate and outer stiffening rib to overcome the problems in the prior art. The utility model can effectively improve the overall stiffness and local stability of the plane TY type intersecting node, thereby effectively improving the ultimate bearing capacity of the node, making the bearing capacity of the intersecting node meet the construction and design requirements of the ultra-high voltage power transmission tower in the future, and no longer becoming a weak link of the structure.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The composite stiffening structure based on outer node plate and additional stiffening rib is characterized in that the main pipe is arranged transversely, the top of the main pipe is longitudinally provided with the normal branch pipe, the first included angle and the second included angle are formed between the main pipe and the normal branch pipe, the bottom of the main pipe is provided with the inclined branch pipe, the third included angle and the fourth included angle are formed between the main pipe and the inclined branch pipe, the first included angle, the second included angle, the third included angle and the fourth included angle are provided with the node plate; the main pipe, the normal branch pipe and the inclined branch pipe are arranged in a TY type; the front and the rear of the main pipe, the normal branch pipe and the inclined branch pipe are connected through the stiffening rib respectively, so as to improve the rigidity and stability of the main pipe;

[0008] Further, the node plate comprises the first node plate, the second node plate, the third node plate and the fourth node plate which are respectively arranged at the first included angle, the second included angle, the third included angle and the fourth included angle;

[0009] Further, the first node plate, the second node plate, the third node plate and the fourth node plate are triangular;

[0010] Further, the stiffening rib comprises the first stiffening rib which is transversely arranged at the front and the rear of the main pipe, the top and the bottom of the first stiffening rib are longitudinally provided with the second stiffening rib and the third stiffening rib respectively, the two second stiffening ribs are respectively arranged at the front and the rear of the normal branch pipe, and the two third stiffening ribs are respectively arranged at the front and the rear of the inclined branch pipe;

[0011] Further, the first stiffening rib is trapezoidal, and the second stiffening rib and the third stiffening rib are triangular;

[0012] Further, the first stiffening rib is located at the central axis of the main pipe;

[0013] Further, the midpoint of the bottom side of the first stiffening rib is located at the midpoint of the surface length of the main pipe;

[0014] Further, the second stiffening rib is located at the central axis of the normal branch pipe, and the third stiffening rib is located at the central axis of the inclined branch pipe;

[0015] Further, the central axes of the main pipe, the normal branch pipe and the inclined branch pipe intersect at one point;

[0016] Further, the first included angle and the second included angle are 90°, and the fourth included angle is 60°-90°.

[0017] The above technical scheme has the following advantages or beneficial effects:

[0018] ​The utility model provides a kind of composite stiffening structure based on outer node plate and outer stiffening rib, by being provided with the node plate and stiffening rib located at the outside of main pipe, so that the overall stiffness of intersecting node main pipe becomes larger, the local stability of main pipe is improved;It can effectively reduce the deformation of the intersecting part of main pipe and vertical branch pipe and inclined branch pipe, effectively weaken the phenomenon that main pipe occurs depression due to excessive branch pipe force, can effectively improve the ability of preventing local buckling of main pipe of plane TY type intersecting node, make the stress of main pipe more uniform, can better meet the increasing bearing capacity requirement of extra-high voltage large-span transmission tower, it is beneficial to design extra-high voltage large-span transmission tower with higher bearing capacity. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0020] Figure 2 It is a sectional view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0021] Figure 3 It is the first node plate structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0022] Figure 4 It is the second node plate structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0023] Figure 5 It is the third node plate structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0024] Figure 6 It is the fourth node plate structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0025] Figure 7 It is the first stiffening rib structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0026] Figure 8 It is the second stiffening rib structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0027] Figure 9 It is the third stiffening rib structure schematic view of the utility model one kind based on outer node plate and outer stiffening rib's composite stiffening structure;

[0028] In the figure, 1 - main pipe; 2 - vertical branch pipe; 3 - inclined branch pipe; 41 - first node plate; 42 - second node plate; 43 - third node plate; 44 - fourth node plate; 51 - first stiffener; 52 - second stiffener; 53 - third stiffener. DETAILED DESCRIPTION

[0029] Hereinafter, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0030] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0031] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature, can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that first feature is higher than second feature in horizontal height. First feature "under", "below" and "lower surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that first feature is lower than second feature in horizontal height.

[0034] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0035] Referring to Figure 1 and Figure 2 , the utility model provides a kind of based on outer node plate and composite stiffening structure of additional stiffening rib, including main pipe 1, vertical branch pipe 2, inclined branch pipe 3, node plate and stiffening rib;Node plate includes first node plate 41, second node plate 42, third node plate 43 and fourth node plate 44;Stiffening rib includes first stiffening rib 51, second stiffening rib 52 and third stiffening rib 53;

[0036] Main pipe 1 is transversely arranged, vertical branch pipe 2 is vertically installed at the top of main pipe 1, and first and second angles are formed between main pipe 1 and vertical branch pipe 2, inclined branch pipe 3 is installed at the bottom of main pipe 1, and third and fourth angles are formed between main pipe 1 and inclined branch pipe 3, node plate is installed between the adjacent pipe body side of main pipe 1, vertical branch pipe 2 and inclined branch pipe 3, i.e. installed at first, second, third and fourth angles.

[0037] Referring to Figure 3 , Figure 4 , Figure 5 and Figure 6 , first node plate 41 is installed at first angle, second node plate 42 is installed at second angle, first angle and second angle are 90 °, third node plate 43 is installed at third angle, fourth node plate 44 is installed at fourth angle, and fourth angle The first node plate 41, the second node plate 42, the third node plate 43 and the fourth node plate 44 are triangle-like, the main pipe 1, the vertical branch pipe 2 and the inclined branch pipe 3 are arranged in a TY type, the central axes of the main pipe 1, the vertical branch pipe 2 and the inclined branch pipe 3 intersect at a point, and the front part and the rear part of the main pipe 1, the vertical branch pipe 2 and the inclined branch pipe 3 are connected through the stiffening ribs respectively.

[0038] Referring to Figure 7 、 Figure 8 and Figure 9 The stiffening ribs comprise a first stiffening rib 51 transversely arranged at the front part and the rear part of the main pipe 1 respectively, the first stiffening rib 51 is trapezoidal, located at the central axis of the main pipe 1, the midpoint of the bottom edge of the first stiffening rib 51 is located at the midpoint of the surface length of the main pipe 1, a second stiffening rib 52 and a third stiffening rib 53 are longitudinally arranged at the top and the bottom of the first stiffening rib 51 respectively, the second stiffening rib 52 and the third stiffening rib 53 are trapezoidal-like, two second stiffening ribs 52 are located at the front part and the rear part of the vertical branch pipe 2 respectively, the second stiffening rib 52 is located at the central axis of the vertical branch pipe 2, and two third stiffening ribs 53 are located at the front part and the rear part of the inclined branch pipe 3 respectively, the third stiffening rib 53 is located at the central axis of the inclined branch pipe 3;

[0039] Preferably, the vertical branch pipe 2 is longitudinally welded and arranged at the top of the main pipe 1, and the inclined branch pipe 3 is longitudinally welded and arranged at the bottom of the main pipe 1.

[0040] Preferably, the first node plate 41 is welded and arranged at the first included angle, the second node plate 42 is welded and arranged at the second included angle, the third node plate 43 is welded and arranged at the third included angle, and the fourth node plate 44 is welded and arranged at the fourth included angle.

[0041] Preferably, the first node plate 41, the second node plate 42, the third node plate 43 and the fourth node plate 44 are steel plates.

[0042] Preferably, the first stiffening rib 51 is transversely welded and arranged at the front part and the rear part of the main pipe 1 respectively, the second stiffening rib 52 is longitudinally welded and arranged at the front part and the rear part of the vertical branch pipe 2 through the welding holes respectively, and the third stiffening rib 53 is longitudinally welded and arranged at the front part and the rear part of the inclined branch pipe 3 through the welding holes respectively.

[0043] Preferably, the first stiffening rib 51, the second stiffening rib 52 and the third stiffening rib 53 are steel plates.

[0044] The structure and working principle of the utility model are further described as follows:

[0045] The utility model discloses a purpose lies in providing a kind of composite stiffening structure based on outer node plate and additional stiffening rib, after the first node plate 41, second node plate 42, third node plate 43, fourth node plate 44 and first stiffening rib 51, second stiffening rib 52, third stiffening rib 53 reinforce node, can effectively improve the ability of preventing local buckling of main pipe of plane TY type intersecting node, and welding method does not affect the bearing capacity of main structure, improve the rigidity of node, can effectively weaken the phenomenon that main pipe 1 occurs concave due to excessive branch pipe force, to effectively improve the ultimate bearing capacity of node.

[0046] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, so as to include all changes falling within the meaning and scope of the equivalent elements of the claims in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0047] In addition, it should be understood that, although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution, and the description mode of the specification is only for clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that those skilled in the art can understand. The above content is only for the technical idea of the utility model, and cannot limit the protection scope of the utility model, and any modification made on the basis of technical solution according to the technical idea of the utility model falls within the protection scope of the claims of the utility model.

Claims

1. A composite stiffened structure based on an outer node panel and externally applied stiffening ribs characterised in that, The utility model provides a kind of steel pipe truss, including transversely arranged main pipe (1), the top of main pipe (1) is longitudinally installed with positive branch pipe (2), and the first included angle and the second included angle are formed between main pipe (1) and positive branch pipe (2), the bottom of main pipe (1) is installed with oblique branch pipe (3), and the third included angle and the fourth included angle are formed between main pipe (1) and oblique branch pipe (3), and node plate is installed at the first included angle, the second included angle, the third included angle and the fourth included angle;Main pipe (1), positive branch pipe (2) and oblique branch pipe (3) are arranged in TY type;The front and rear of main pipe (1), positive branch pipe (2) and oblique branch pipe (3) are connected respectively by stiffening rib, to improve the rigidity and stability of main pipe (1).

2. A composite stiffened structure based on outer node plates and externally applied stiffening ribs according to claim 1, characterized in that, The node plate includes first node plate (41), second node plate (42), third node plate (43) and fourth node plate (44) installed at the first included angle, the second included angle, the third included angle and the fourth included angle respectively.

3. A composite stiffened structure based on outer node plates and externally applied stiffening ribs according to claim 2, characterised in that, The first node plate (41), second node plate (42), third node plate (43) and fourth node plate (44) are similar triangles.

4. The composite stiffened structure based on outer node plates and external stiffening ribs according to claim 1, characterized in that, The stiffening rib includes first stiffening rib (51) transversely installed at the front and rear of main pipe (1) respectively, and the top and bottom of first stiffening rib (51) are longitudinally installed with second stiffening rib (52) and third stiffening rib (53) respectively, two second stiffening ribs (52) are located at the front and rear of positive branch pipe (2) respectively, and two third stiffening ribs (53) are located at the front and rear of oblique branch pipe (3) respectively.

5. A composite stiffened structure based on outer node plates and externally applied stiffening ribs according to claim 4, characterised in that, The first stiffening rib (51) is trapezoidal, and the second stiffening rib (52) and the third stiffening rib (53) are similar trapezoidal.

6. A composite stiffened structure based on outer node plates and externally applied stiffening ribs according to claim 4, characterised in that, The first stiffening rib (51) is located at the central axis of main pipe (1).

7. A composite stiffened structure based on outer node plates and externally applied stiffening ribs according to claim 6, characterised in that, The midpoint of the bottom side of first stiffening rib (51) is located at the midpoint of the surface length of main pipe (1).

8. The composite stiffened structure based on outer node plates and external stiffening ribs according to claim 4, characterized in that, The second stiffening rib (52) is located at the central axis of positive branch pipe (2), and the third stiffening rib (53) is located at the central axis of oblique branch pipe (3).

9. The composite stiffened structure based on outer node plates and external stiffening ribs according to claim 1, characterized in that, The central axes of main pipe (1), positive branch pipe (2) and oblique branch pipe (3) intersect at a point.

10. The composite stiffened structure based on outer node plates and externally applied stiffeners according to claim 1, characterized in that, The first included angle and the second included angle are 90°, and the fourth included angle is... The range is 60° to 90°.

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