360-degree occlusion node equivalent spring vertical stiffness testing device considering coupling effect

Abstract

The utility model discloses a 360-degree occlusion node equivalent spring vertical rigidity testing device considering a coupling effect, which comprises a bracket with a door-shaped structure, the lower ends of two supporting legs of the bracket are respectively provided with an extension plate, the two extension plates extend oppositely, and a gap is reserved between the close ends of the extension plates; a pressing plate is further arranged on the lower side of the extension plate in parallel, the pressing plate is connected with the extension plate through a bolt, and a gap is reserved between the pressing plate and the extension plate; a clamping end is arranged at the upper end of the support and used for being connected with loading equipment, and a base is arranged below the support. According to the utility model, through the clamping of the extension plate and the pressing plate, the transmission of force is ensured, the constraint effect on the panel of the occlusion node is improved, and the panel is prevented from horizontal displacement and rotation, so that the panel can only generate vertical displacement under the action of vertical tension, the vertical rigidity of the 360-degree occlusion node can be better tested, and the test precision is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to building structure test technical field especially, relates to a 360 degree bite joint equivalent spring vertical rigidity testing arrangement considering coupling effect. BACKGROUND

[0002] In the building industry, metal panel is widely used in roof, wall and other parts because of its good appearance and functionality, the panel is connected through bite, generally has multiple bite forms, common has straight lock edge bite structure, 360 degree bite structure etc., however, with the increase of wind load, the wind bearing capacity of metal panel becomes an important problem.

[0003] For 360 degree bite structure, the existing wind bearing capacity test method has problems such as low test precision and complex operation, and cannot accurately evaluate the wind resistance of metal panel, therefore, in order to evaluate the wind bearing capacity of metal panel, some people have proposed a three-way decoupling spring model to simulate the mechanical behavior of the node, that is, the 360 degree bite structure is decoupled into three equivalent springs, including horizontal spring, vertical spring and rotational spring, and the mechanical properties of the bite node in three directions are characterized by three equivalent springs in three directions. However, the existing three-way equivalent spring is relatively independent, and the error between the simulation result and the actual test result is large, and the precision is not high.

[0004] Therefore, scholars have found that the reason for the above problems is that there is a coupling effect between the three-way spring stiffness of the 360 degree bite metal panel node, such as the coupling effect between the horizontal direction and the rotational direction, which will affect the mechanical properties in its single direction, that is, the horizontal force required for the node to produce the same horizontal displacement is different when the angle is different. Therefore, the applicant proposes a 360 degree bite node spring model considering the spring coupling effect to solve this problem, however, most of the existing test devices are ordinary tensile test devices, and the constraint effect on the 360 degree bite metal panel node is poor, and when stretching, the bite node is easy to produce three-way deformation, it is difficult to accurately test the single stiffness, and it brings many inconveniences to the test work. SUMMARY

[0005] In view of the above technical problems of the prior art, the technical problem to be solved by the utility model is to provide a 360 degree bite joint equivalent spring vertical rigidity testing arrangement considering coupling effect, which solves the problem of poor constraint effect of the test device on the bite node and the difficulty in testing single stiffness in the prior art.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A 360° bite joint equivalent spring vertical stiffness testing device considering coupling effect, comprising a support in a door-shaped structure, two lower ends of two legs of the support are respectively provided with an extension plate, the two extension plates extend towards each other and leave a gap between the proximal ends; a pressing plate is further arranged parallel to the lower side of the extension plate, the pressing plate is connected with the extension plate through a bolt, and a gap is left between the pressing plate and the extension plate; a clamping end is arranged at the upper end of the support for being connected with a loading device, and a base is arranged below the support.

[0008] As an optimization, the support is bent from a steel plate, and the extension plate is integrally made with the support.

[0009] As an optimization, the opposite ends of the two extension plates are provided with a bevel, so that the width of the upper side of the extension plate is smaller than that of the lower side.

[0010] As an optimization, the opposite ends of the two pressing plates are flush with or higher than the ends of the corresponding extension plates.

[0011] As an optimization, a 360° bite joint is further arranged between the two clamping assemblies.

[0012] The 360° bite joint comprises a first bite part and a second bite part that are bitten together, and the first bite part and the second bite part are respectively formed by the proximal ends of two adjacent panels;

[0013] The first bite part comprises a first vertical plate formed by bending and extending upwards from one end of a horizontally arranged panel, a first horizontal plate formed by bending and extending away from the side of the panel, a second vertical plate formed by bending and extending downwards, a second horizontal plate formed by bending and extending towards the side of the panel, and a third vertical plate formed by bending and extending upwards, and gaps are left between the first vertical plate and the first vertical plate, between the second vertical plate and the third vertical plate, and between the upper end of the third vertical plate and the first horizontal plate;

[0014] The second bite part comprises a fourth vertical plate formed by bending and extending upwards from a horizontally arranged panel, and a third horizontal plate formed by bending and extending towards the side of the panel.

[0015] When the first bite part is bitten with the second bite part of the adjacent panel, the fifth vertical plate is bitten in the gap between the second vertical plate and the third vertical plate, the third horizontal plate is bitten in the gap between the upper end of the third vertical plate and the first horizontal plate, and the fourth vertical plate is bitten in the gap between the first vertical plate and the third vertical plate.

[0016] The two panels of the 360° bite joint are horizontally arranged and respectively correspond to the gaps between the extension plates and the pressing plates clamped on both sides.

[0017] The support further comprises a base plate arranged horizontally, a sixth vertical plate bent upward from one end of the base plate and extended, a fourth horizontal plate bent away from the side of the base plate and extended, a seventh vertical plate bent downward and extended, a fifth horizontal plate bent toward the side of the base plate and extended, and an eighth vertical plate bent upward and extended; when the support is engaged, the eighth vertical plate is engaged between the third vertical plate and the fifth vertical plate, the seventh vertical plate is engaged between the second vertical plate and the fifth vertical plate, the sixth vertical plate is engaged between the first vertical plate and the fourth vertical plate, and the fourth horizontal plate is engaged between the first horizontal plate and the third horizontal plate.

[0018] The other end of the base plate is fixed on the base, and the application has the following beneficial effects compared with the prior art:

[0019] The device can better test the vertical stiffness of the 360° engagement node, and has higher testing precision. The device has simple structure and convenient operation, can realize accurate testing on the vertical spring system of the 360° engagement metal roof plate, and improves the accuracy and reliability of the wind resistance performance evaluation. Meanwhile, the realization of automatic testing improves the testing efficiency and reduces human error. The device is suitable for the field of wind resistance performance testing of various building structures, and has wide application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the device.

[0021] In the figure, 1 is a support, 2 is an extension plate, 3 is a pressing plate, 4 is a base, and 5 is a 360° engagement node. DETAILED DESCRIPTION

[0022] The device will be further described in detail in combination with the drawings.

[0023] In specific implementation, refer to Figure 1 ,

[0024] A 360° engagement node equivalent spring vertical stiffness testing device considering coupling effect, comprising a support 1 in a door-shaped structure, two feet of the support 1 are respectively provided with an extension plate 2 at the lower end, the two extension plates 2 extend towards each other and leave a gap between the proximal ends; a pressing plate 3 is further arranged parallel to the lower side of the extension plate 2, the pressing plate 3 is connected with the extension plate 2 through a bolt, and a gap is left between the pressing plate 3 and the extension plate 2; a clamping end is arranged at the upper end of the support 1 and used for being connected with a loading device, and a base 4 is arranged below the support 1.

[0025] Specifically, the 360° bite joint 5 is installed between the two clamping assemblies; the 360° bite joint 5 comprises a first bite part and a second bite part which are bitten together, and the first bite part and the second bite part are respectively formed by one end of two adjacent panels;

[0026] The first bite part comprises a first vertical plate formed by bending and extending upward from one end of the horizontally arranged panel, a first flat plate formed by bending and extending away from one side of the panel, a second vertical plate formed by bending and extending downward, a second flat plate formed by bending and extending toward the other side of the panel, and a third vertical plate formed by bending and extending upward, and gaps are formed between the first vertical plate and the first vertical plate, between the second vertical plate and the third vertical plate, and between the upper end of the third vertical plate and the first flat plate.

[0027] The second bite part comprises a fourth vertical plate formed by bending and extending upward from the horizontally arranged panel, a third flat plate formed by bending and extending toward the other side of the panel, and a fifth vertical plate formed by bending and extending downward.

[0028] When the first bite part is bitten with the second bite part of the adjacent panel, the fifth vertical plate is bitten in the gap between the second vertical plate and the third vertical plate, the third flat plate is bitten in the gap between the upper end of the third vertical plate and the first flat plate, and the fourth vertical plate is bitten in the gap between the first vertical plate and the third vertical plate.

[0029] The two panels of the 360° bite joint 5 are horizontally arranged and correspond to the gaps between the two extension plates 2 and the pressing plates 3 clamped on both sides.

[0030] The support comprises a base plate arranged horizontally, a sixth vertical plate formed by bending and extending upward from one end of the base plate, a fourth flat plate formed by bending and extending away from one side of the base plate, a seventh vertical plate formed by bending and extending downward, a fifth flat plate formed by bending and extending toward the other side of the base plate, and an eighth vertical plate formed by bending and extending upward, and when bitten, the eighth vertical plate is bitten between the third vertical plate and the fifth vertical plate, the seventh vertical plate is bitten between the second vertical plate and the fifth vertical plate, the sixth vertical plate is bitten between the first vertical plate and the fourth vertical plate, and the fourth flat plate is bitten between the first flat plate and the third flat plate.

[0031] The other end of the base plate is fixed on the base 4.

[0032] In order to ensure the overall strength and stability of the device, the support 1 is bent from a steel plate, and the extension plate 2 is integrally formed with the support 1. The opposite end of the two extension plates 2 is provided with a bevel, so that the width of the upper side of the extension plate 2 is smaller than the width of the lower side. In this way, the extension plate 2 is beveled near the joint part to avoid limiting the deformation of the inside of the joint and improve the test accuracy.

[0033] The opposite end of the two pressing plates 3 is flush with or higher than the end of the corresponding side of the extension plate 2. In this way, the pressing plate 3 can provide support for the transition position of the face plate of the bite node and the first vertical plate, prevent horizontal displacement and relative rotation of the bite node, so as to ensure that only vertical displacement is generated during loading, and improve the test effect.

[0034] In use, the 360° bite node 5 to be tested is installed on the test device, and a vertical tensile force is applied through the loading system. At the same time, the data acquisition system collects pressure and displacement data in real time and records and analyzes. Through the control system, automatic testing can be realized, and the test efficiency and accuracy are improved.

[0035] The utility model discloses a transmission of the clamping guarantee of extension plate and pressing plate force and improve the restraint action to the face plate of bite node, prevent its horizontal displacement and rotation, thereby guaranteeing that it can only produce vertical displacement under the action of vertical tensile force, thereby can better test the vertical stiffness of 360 ° bite node, and the test precision is higher. Simple structure, convenient operation can realize accurate test to 360 ° bite metal roof panel vertical spring system, improve the accuracy and reliability of wind resistance performance evaluation. At the same time, the realization of automatic testing improves the test efficiency, reduces the human error. The device is suitable for various building structure wind resistance performance test field, has extensive application prospect.

[0036] Although the embodiments of the utility model have been shown and described, for those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and basis of the utility model, the scope of the utility model is defined by the appended claims and its equivalents, therefore the embodiments of the utility model are only for the illustrative examples of the utility model, and the embodiments of the utility model do not constitute the limitation of the utility model from any point of view.

Claims

1. A 360° bite node equivalent spring vertical stiffness testing device considering coupling effect, characterized in that, The bracket comprises a door-shaped structure, two lower ends of two legs of the bracket are respectively provided with an extension plate, the two extension plates extend towards each other and leave a gap between the close ends, a pressing plate is arranged on the lower side of the extension plate, the pressing plate is connected with the extension plate through a bolt, and a gap is left between the pressing plate and the extension plate, a clamping end is arranged at the upper end of the bracket for being connected with a loading device, and a base is arranged below the bracket.

2. The 360° bite node equivalent spring vertical stiffness testing device considering coupling effects of claim 1, wherein, The bracket is made of a steel plate, and the extension plate is integrally made with the bracket.

3. The 360° bite node equivalent spring vertical stiffness testing device considering coupling effects of claim 1, wherein, Opposite ends of the two extension plates are provided with bevels, so that the width of the upper side of the extension plate is smaller than that of the lower side.

4. The 360° bite node equivalent spring vertical stiffness testing device considering coupling effects of claim 1, wherein, Opposite ends of the two pressing plates are flush with or higher than the end portions of the corresponding extension plates.

5. The 360° bite node equivalent spring vertical stiffness testing device considering coupling effects of claim 1, wherein, A 360° occlusion node is arranged between the two clamping assemblies. The 360° occlusion node comprises a first occlusion part and a second occlusion part occluded together, the first occlusion part and the second occlusion part are respectively formed by close ends of two adjacent panels, The first occlusion part comprises a first vertical plate formed by upwardly bending and extending one end of a horizontally arranged panel, a first horizontal plate formed by bending and extending away from the side of the panel, a second vertical plate formed by downwardly bending and extending, a second horizontal plate formed by bending and extending towards the side close to the panel, and a third vertical plate formed by upwardly bending and extending, and gaps are left between the first vertical plate and the first vertical plate, between the second vertical plate and the third vertical plate, and between the upper end of the third vertical plate and the first horizontal plate. The second occlusion part comprises a fourth vertical plate formed by upwardly bending and extending the horizontally arranged panel, a third horizontal plate formed by bending and extending towards the side close to the panel, and a fifth vertical plate formed by downwardly bending and extending. When the first occlusion part is occluded with the second occlusion part of the adjacent panel, the fifth vertical plate is occluded in the gap between the second vertical plate and the third vertical plate, the third horizontal plate is occluded in the gap between the upper end of the third vertical plate and the first horizontal plate, and the fourth vertical plate is occluded in the gap between the first vertical plate and the third vertical plate. The two panels of the 360° occlusion node are horizontally arranged and respectively correspond to the gaps between the extension plates and the pressing plates on the two sides. A support is further arranged, the support comprises a horizontally arranged base plate, a sixth vertical plate formed by upwardly bending and extending one end of the base plate, a fourth horizontal plate formed by bending and extending away from the side of the base plate, a seventh vertical plate formed by downwardly bending and extending, a fifth horizontal plate formed by bending and extending towards the side close to the base plate, and an eighth vertical plate formed by upwardly bending and extending, and when occluded, the eighth vertical plate is occluded between the third vertical plate and the fifth vertical plate, the seventh vertical plate is occluded between the second vertical plate and the fifth vertical plate, the sixth vertical plate is occluded between the first vertical plate and the fourth vertical plate, and the fourth horizontal plate is occluded between the first horizontal plate and the third horizontal plate. The other end of the base plate is fixed on the base.

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