Transformation structure for connecting angle steel tower and test base

Abstract

The invention discloses a conversion structure for connecting an angle steel tower and a test base, the conversion structure comprises a top plate connected with the bottom of the angle steel tower and a bottom plate connected with the test base, the top plate and the bottom plate are connected through a plurality of fasteners, the bottom plate is a circular bottom plate, the top plate is of a circular ring structure, and the bottom plate is of a circular ring structure. The bottom plate and the top plate are connected to form a frustum structure, the multiple fasteners are installed in the frustum structure, the two ends of each fastener are connected with the inner side of the top plate and the inner side of the bottom plate respectively, and the multiple fasteners are arranged in the circumferential direction of the inner ring of the top plate. The device is simple in structure, can guarantee direct and effective load transmission, is uniform in stress, is clear in force transmission, and guarantees the simulation of a real stress state, so as to guarantee the accuracy of test data.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power transmission lines, and particularly relates to a conversion structure for connecting an angle steel tower and a test base. Background Art

[0002] The true model test of a steel tower is an important means for the quality inspection and performance verification of an electric power transmission line steel tower, mainly used to simulate the mechanical properties under actual operating conditions, ensure the safety and reliability of the steel tower under the design load, significantly reduce engineering risks, and ensure the long-term safe operation of the transmission line;

[0003] In the true model test of a steel tower, the applicant found that the connection between the angle steel tower and the test base is the key link to ensure the accurate transfer of load and simulate the real stress state. If the connection is improper, it may lead to distortion of stress distribution, deviation of test data, and even safety accidents;

[0004] At present, some angle steel tower bases are fixed on the concrete test base by embedded anchor bolts, but there are problems such as slippage caused by insufficient bolt pre-tightening force and local crushing of the base concrete. There are also cases where the tower legs and the base are connected by flange bolts, but the flatness of the flange needs to be maintained. If the contact surface of the flange is uneven, it will lead to uneven load transfer. There are also cases where hinge supports or fixed connections are used, but it is easy to have problems where the actual connection stiffness does not match the design assumptions, such as excessive hinge constraints. Summary of the Invention

[0005] The purpose of the present invention is to provide a conversion structure for connecting an angle steel tower and a test base to overcome the defects of the prior art. The structure is simple to ensure direct and effective load transfer, uniform stress, clear force transmission, simulate the real stress state, and ensure the accuracy of test data.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A conversion structure for connecting an angle steel tower and a test base includes a top plate connected to the bottom of the angle steel tower and a bottom plate connected to the test base. The top plate and the bottom plate are connected by a plurality of fasteners;

[0008] Through this embodiment, a simple conversion structure is formed by connecting the top plate and the bottom plate with fasteners to connect the angle steel tower and the test base to ensure direct and effective load transfer.

[0009] In one embodiment, the bottom plate is a circular bottom plate, the top plate is an annular structure, the bottom plate and the top plate are connected to form a frustum structure, and a plurality of fasteners are installed in the frustum structure. The two ends of the fasteners are respectively connected to the inner sides of the top plate and the bottom plate, and the plurality of fasteners are circumferentially arranged along the inner ring of the top plate;

[0010] Through this embodiment, the bottom plate and the top plate are connected to form a frustum structure, and a plurality of fasteners arranged circumferentially along the inner circumference of the top plate are provided within the frustum structure to form a conversion structure in the tower true model test, so as to ensure direct and effective load transfer, uniform stress, and clear force transmission.

[0011] In one embodiment, there is no gap between two adjacent ones of the fasteners to form a fastening structure along the inner circumference of the top plate.

[0012] In one embodiment, a cross stiffening plate is further provided within the fastening structure, and the cross stiffening plate is connected to the inner side of the bottom plate and the fastening structure.

[0013] In one embodiment, an annular stiffening plate is further provided between the bottom plate and the top plate, and the annular stiffening plate is connected to the bottom plate, the top plate, and the fastening structure.

[0014] In one embodiment, the fastener is a steel pipe.

[0015] In one embodiment, a plurality of first connection holes are provided on the bottom plate, and the plurality of first connection holes are arranged at intervals circumferentially around the center of the bottom plate, and the first connection holes are matched with the connection bolts of the test base.

[0016] In one embodiment, a plurality of second connection holes are provided on the top plate, and the plurality of second connection holes are arranged at intervals circumferentially around the center of the top plate, and the second connection holes are matched with the hole positions of the tower foot plate of the angle steel tower.

[0017] In one embodiment, both the first connection holes and the second connection holes are of an elliptical hole structure.

[0018] In one embodiment, both ends of the steel pipe are respectively connected to the top plate and the bottom plate by fillet welding.

[0019] The beneficial effects of the present invention are as follows:

[0020] The present invention provides a conversion structure for connecting an angle steel tower and a test base, which has a simple structure and is used to connect the angle steel tower and the test base in the true model test of the iron tower, so as to ensure direct and effective load transfer, uniform stress, clear force transmission, ensure the simulation of the real stress state, and ensure the accuracy of the test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the following, the present invention will be described in more detail based on embodiments and with reference to the drawings. Among them:

[0022] Figure 1 shows a schematic structural diagram of the upper plane of the conversion structure of the present invention;

[0023] Figure 2 Shows a schematic structural diagram of the lower plane of the conversion structure of the present invention;

[0024] Figure 3 Shows a schematic elevation structure diagram of the conversion structure of the present invention;

[0025] In the drawings, like parts are denoted by like reference numerals. The drawings are not drawn to scale.

[0026] Reference numerals:

[0027] 1 - top plate, 2 - bottom plate, 3 - steel pipe, 4 - cross stiffening plate, 5 - annular stiffening plate, 6 - first connection hole, 7 - second connection hole. Detailed implementation manners

[0028] The present invention will be further described below in conjunction with the drawings.

[0029] The present invention provides a conversion structure for connecting an angle steel tower and a test base, as Figures 1 to 3 shown, including a top plate 1 connected to the bottom of the angle steel tower and a bottom plate 2 connected to the test base. The top plate 1 and the bottom plate 2 are connected by a plurality of fasteners. The bottom plate 2 is a circular bottom plate, and the top plate 1 is an annular structure. The bottom plate 2 and the top plate 1 are connected to form a frustum structure. A plurality of fasteners are installed in the frustum structure. The two ends of the fasteners are respectively connected to the inner sides of the top plate 1 and the bottom plate 2. The plurality of fasteners are arranged circumferentially along the inner ring of the top plate 1;

[0030] It should be noted that the bottom plate 2 and the top plate 1 are connected to form a frustum structure, and a plurality of fasteners arranged circumferentially along the inner ring of the top plate 1 are provided in the frustum structure to form a conversion structure in the tower full-scale test, so as to ensure direct and effective load transfer, uniform stress, and clear force transmission;

[0031] Specifically, as Figure 1 and Figure 2 shown, there is no gap between two adjacent fasteners, that is, a plurality of fasteners form a complete fastening structure along the inner ring of the top plate 1, further ensuring direct and effective load transfer and uniform stress;

[0032] In one embodiment, a cross stiffening plate 4 is further provided in the fastening structure. The cross stiffening plate 4 is connected to the inner side of the bottom plate 2 and the fastening structure. An annular stiffening plate 5 is further provided between the bottom plate 2 and the top plate 1. The annular stiffening plate 5 is connected to the bottom plate 2, the top plate 1, and the fastening structure, further ensuring the simulation of the real stress state to ensure the accuracy of the test data;

[0033] It should be noted that the fastener is a steel pipe 3, and both ends of the steel pipe 3 are respectively connected to the top plate 1 and the bottom plate 2 by fillet welding;

[0034] In one embodiment, asFigure 1 and Figure 2 As shown in Figure 2 , a plurality of first connection holes 6 are provided on the bottom plate 2. The plurality of first connection holes 6 are arranged at intervals along the circumferential direction of the center of the bottom plate 2. The first connection holes 6 are matched with the connection bolts of the test base. A plurality of second connection holes 7 are provided on the top plate 1. The plurality of second connection holes 7 are arranged at intervals along the circumferential direction of the center of the top plate 1. The second connection holes 7 are matched with the hole positions of the tower foot plates of the angle steel tower. Both the first connection holes 6 and the second connection holes 7 are of an elliptical hole structure, which further ensures that the load transfer is direct and effective and the stress is uniform;

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0036] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not deviate from the spirit and scope of the present invention defined by the appended claims. It should be understood that different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A conversion structure for connecting an angle steel tower and a test base, characterized in that It includes a top plate connected to the bottom of the angle steel tower and a bottom plate connected to the test base, and the top plate and the bottom plate are connected by a plurality of fasteners.

2. The conversion structure for connecting an angle steel tower and a test base according to claim 1, characterized in that The bottom plate is a circular bottom plate, the top plate is an annular structure, the bottom plate and the top plate are connected to form a frustum structure, and a plurality of the fasteners are installed in the frustum structure. Both ends of the fasteners are respectively connected to the top plate and the inner side of the bottom plate, and a plurality of the fasteners are arranged circumferentially along the inner ring of the top plate.

3. The conversion structure for connecting an angle steel tower and a test base according to claim 2, characterized in that, There is no gap between two adjacent fasteners, so as to form a fastening structure along the inner ring of the top plate.

4. A conversion structure for connecting an angle steel tower and a test base according to claim 3, characterized in that, A cross stiffening plate is further arranged in the fastening structure, and the cross stiffening plate is connected to the inner side of the bottom plate and the fastening structure.

5. A conversion structure for connecting an angle steel tower and a test base according to claim 3, characterized in that, An annular stiffening plate is further arranged between the bottom plate and the top plate, and the annular stiffening plate is connected to the bottom plate, the top plate and the fastening structure.

6. The conversion structure for connecting an angle steel tower and a test base according to claim 1, wherein, The fastener is a steel pipe.

7. A conversion structure for connecting an angle steel tower and a test base according to claim 1, characterized in that, A plurality of first connection holes are arranged on the bottom plate, and the plurality of first connection holes are arranged at intervals circumferentially around the center of the bottom plate. The first connection holes are matched with the connection bolts of the test base.

8. A conversion structure for connecting an angle steel tower and a test base according to claim 7, characterized in that, A plurality of second connection holes are arranged on the top plate, and the plurality of second connection holes are arranged at intervals circumferentially around the center of the top plate. The second connection holes are matched with the hole positions of the tower foot plate of the angle steel tower.

9. The conversion structure for connecting an angle steel tower and a test base according to claim 8, characterized in that, Both the first connection holes and the second connection holes are of elliptical hole structures.

10. A conversion structure for connecting an angle steel tower and a test base according to claim 6, characterized in that, Both ends of the steel pipe are respectively connected to the top plate and the bottom plate by fillet welding.

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