Progressive collapse resistance test device

Abstract

The present invention discloses an anti-continuous collapse test device, which relates to the technical field of building structure testing. The present invention comprises a base, a support suspension is installed on the base, a storage box is fixedly connected to the support suspension, a threaded rod is rotatably connected inside the storage box, a nut seat is slidably connected inside the storage box, the nut seat and the threaded rod are threadedly connected, and a hydraulic cylinder is fixedly installed at the bottom of the nut seat. The present invention can perform upward stretching detection on the test piece through the mutual cooperation of the hydraulic cylinder, support cantilever, positioning seat assembly, support seat and other structures. Compared with the traditional downward pressure detection method, it can avoid the test piece from extending and deforming to the surroundings, and simplify the protective structure. Through the mutual cooperation between the threaded rod, motor and storage box, it can drive the hydraulic cylinder and the support seat to move left and right, which is convenient for adaptively adjusting the stretching position according to the specific specifications and length of the test piece.

Description

Technical Field

[0001] The invention relates to the technical field of building structure testing, in particular to an anti-progressive collapse testing device. Background Art

[0002] Progressive structural collapse refers to the initial local damage of a structure due to the occurrence of an unexpected event, which then causes continuous damage to components connected to the damaged components, and ultimately leads to the overall collapse of the structure or a large-scale collapse. Therefore, studying the force transmission mechanism of the remaining structural components after local damage to the building structure and enhancing the ability of the structure to resist progressive collapse are of great significance to improving the safety of building structures, preventing the occurrence of major engineering disasters, and reducing the corresponding economic losses and casualties.

[0003] There are many anti-progressive collapse test equipments, but the traditional detection method simulates the stress process when the column is destroyed. Generally, the anti-progressive collapse test is carried out by applying downward force to the structural members. However, the downward pressure method is easy to cause the structural members to deform out of the plane. In order to prevent the components from deforming out of the plane, it is necessary to install additional protective devices on the side, which is more cumbersome. Therefore, we propose an anti-progressive collapse test device. Summary of the invention

[0004] The purpose of the present invention is to provide an anti-progressive collapse test device, which can be applied to steel structures, concrete structures, and steel-concrete composite structures by adopting tensile testing so that the test piece does not undergo out-of-plane deformation.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an anti-continuous collapse test device, comprising a base, a support suspension mounted on the base, a storage box fixedly connected to the support suspension, a threaded rod rotatably connected inside the storage box, a nut seat slidably connected inside the storage box, the nut seat and the threaded rod are threadedly connected, a hydraulic cylinder is fixedly mounted on the bottom of the nut seat, and a support seat is fixedly mounted on the output end of the hydraulic cylinder;

[0006] Both ends of the base are equipped with positioning seat assemblies, which include a base, one side of the base is set to be rounded, and two sets of gaps are opened inside the base, and the inner wall of the gap is rotatably connected to a connecting arm through a pin shaft;

[0007] A support arm is fixedly connected to the side wall of the nut seat, and the support arm is slidably connected to the storage box;

[0008] When the progressive collapse resistance test is carried out, the two ends of the test piece are detachably connected to the connecting arms in the positioning seat assembly, and the top is detachably connected to the supporting seat.

[0009] Furthermore, the base is fixedly connected to the supporting suspension, and a reinforcing seat is installed at the connection.

[0010] Furthermore, the storage box and the supporting suspension are fixed by welding or bolting.

[0011] Furthermore, the storage box threaded rod is rotatably connected in the storage box via a bearing, an end of the threaded rod is fixedly connected to a motor, and the motor is installed in the storage box.

[0012] Furthermore, a threaded hole matching the threaded rod is provided inside the nut seat.

[0013] Furthermore, the hydraulic cylinder is detachably mounted on the nut seat by means of bolts.

[0014] Furthermore, the support seat and the test piece are detachably connected via bolts.

[0015] Furthermore, the test piece includes a column, and steel beams are installed on both sides of the column by bolts.

[0016] Furthermore, the base is fixed on the base, and the connecting arm is detachably connected to the test piece by bolts.

[0017] Furthermore, there are two support arms, and a slide groove matched with the support arms is provided on the side wall of the storage box.

[0018] The present invention has at least the following beneficial effects:

[0019] 1. The present invention can perform upward stretching testing on the test piece through the mutual cooperation of the hydraulic cylinder, supporting cantilever, positioning seat assembly, supporting seat and other structures, and can also support and guide the test piece during stretching. Compared with the traditional downward pressure detection method, the tensile force can act on the test piece only in the vertical direction, thereby preventing the test piece from being disturbed by external forces in other directions and extending and deforming in all directions during the test, which is convenient for streamlining the protective structure.

[0020] 2. The present invention can drive the hydraulic cylinder and the support seat to move left and right through the mutual cooperation between the threaded rod, the motor, and the storage box, so as to facilitate the adaptive adjustment of the stretching position according to the specific specifications and length of the test piece. During stretching, the support arm can also provide support for the test piece to prevent the reaction force generated by the stretching from pulling and deforming the threaded rod and causing damage.

[0021] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention from a first viewing angle;

[0023] Figure 2 It is a three-dimensional schematic diagram of the support seat structure of the present invention;

[0024] Figure 3 It is a three-dimensional schematic diagram of the nut seat structure of the present invention;

[0025] Figure 4 It is a three-dimensional schematic diagram of the test piece structure of the present invention;

[0026] Figure 5 It is a stereoscopic schematic diagram of the overall structure of the present invention from a second viewing angle;

[0027] Figure 6 It is a three-dimensional schematic diagram of the positioning seat assembly of the present invention.

[0028] Reference numerals:

[0029] 1. Base; 2. Support suspension; 3. Storage box; 4. Threaded rod; 5. Nut seat; 6. Hydraulic cylinder; 7. Support seat; 8. Test piece; 81. Column; 82. Steel beam; 9. Positioning seat assembly; 91. Base; 92. Connecting arm; 10. Support arm; 11. Reinforcement seat; 12. Motor; 13. Slide. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0031] See also Figure 1 The present invention provides a technical solution: an anti-continuous collapse test device, comprising a base 1, a support suspension 2 is installed on the base 1, a storage box 3 is fixedly connected to the support suspension 2, a threaded rod 4 is rotatably connected inside the storage box 3, a nut seat 5 is slidably connected inside the storage box 3, the nut seat 5 and the threaded rod 4 are threadedly connected, a hydraulic cylinder 6 is fixedly installed at the bottom of the nut seat 5, a support seat 7 is fixedly installed at the output end of the hydraulic cylinder 6, positioning seat assemblies 9 are installed at both ends of the base 1, and the hydraulic cylinder 6 drives the support seat 7 to stretch upward, which is used to perform a load detection test on a test piece 8;

[0032] A support arm 10 is fixedly connected to the side wall of the nut seat 5, and the support arm 10 is slidably connected to the storage box 3;

[0033] When the progressive collapse resistance test is performed, the two ends of the test piece 8 are detachably connected to the positioning seat assemblies 9 at the two ends of the base 1 , and the top is detachably connected to the support seat 7 .

[0034] The support suspension 2 is mainly used to provide support. According to the technical solution of the present application, the overall shape of the support suspension 2 is set to be a door shape. The base 1 and the support suspension 2 are fixedly connected by welding, and a reinforcement seat 11 is also installed at the connection. The reinforcement seat 11 is used to enhance the connection strength between the base 1 and the support suspension 2, thereby improving the stability of the device during testing.

[0035] The storage box 3 is mainly used to store the threaded rod 4. In some embodiments, the storage box 3 can be fixed to the support suspension 2 by welding or bolting. According to the technical solution of the present application, the storage box 3 is fixed to the support suspension 2 by welding.

[0036] Furthermore, the threaded rod 4 is rotatably connected in the storage box 3 through a bearing, and the end of the threaded rod 4 is fixedly connected to a motor 12, which is installed in the storage box 3, and a threaded hole that matches the threaded rod 4 is opened inside the nut seat 5. The motor 12 is powered by an external power supply. When the motor 12 is started, it will drive the threaded rod 4 to rotate in the forward or reverse direction. Through the meshing relationship between the threaded rod 4 and the threaded hole, the nut seat 5 can be driven to move left or right in the storage box 3. It should be noted that according to the principle of thread self-locking, since the threaded rod 4 and the threaded hole are meshed with each other, after the nut seat 5 moves to an appropriate position, it can be automatically locked to avoid the nut seat 5 from moving during the test. Figure 3 and Figure 5 shown.

[0037] The hydraulic cylinder 6 is mainly used to provide a stretching power source for the device. According to the technical solution of the present application, the hydraulic cylinder 6 is detachably mounted on the nut seat 5 by bolts. The hydraulic cylinder 6 is started to contract and the test piece 8 is stretched upward by the support seat 7, so that the load pressure test of the test piece 8 can be performed. It should be noted that the support seat 7 and the test piece 8 are also detachably mounted by bolts. Figure 2 shown.

[0038] Further, such as Figure 4 As shown, the test piece 8 includes a column 81, and steel beams 82 are installed on both sides of the column 81 by bolts. Figure 6As shown, there are two positioning seat assemblies 9, and the two positioning seat assemblies 9 both include a base 91, which is fixed on the base 1, one side of the base 91 is set to be chamfered, and two sets of gaps are opened inside the base 91, and the inner wall of the gap is rotatably connected to a connecting arm 92 through a pin shaft, and the connecting arm 92 is detachably connected to the steel beam 82 through bolts. When the hydraulic cylinder 6 is started to stretch the test piece 8 upward, the two ends of the test piece 8 will drive the connecting arm 92 to deflect upward on the base 91, so as to facilitate the vertical guidance of the test piece 8 when it is stretched, so that the tensile force only acts on the test piece 8 in the vertical direction, so as to prevent the test piece 8 from being disturbed by external forces in other directions and extending and deforming in all directions during the test.

[0039] Furthermore, there are two support arms 10, and a slide groove 13 adapted to the support arm 10 is opened on the side wall of the storage box 3. When the nut seat 5 moves in the storage box 3, the support arm 10 will move in the slide groove 13 accordingly. When the hydraulic cylinder 6 performs a tensile test on the test piece 8, the support arm 10 can provide support to it, thereby preventing the reaction force generated by the stretching from pulling and deforming the threaded rod 4 and causing damage.

[0040] The use principle and process of the present invention are as follows: when it is necessary to test the test piece 8, firstly, the test piece 8 is installed on the positioning seat assembly 9 by bolts, and then the test piece 8 and the hydraulic cylinder 6 are fixed by the support seat 7, and then the hydraulic cylinder 6 is started to drive the support seat 7 to move upward, so that the test piece 8 can be stretched upward, so that the load pressure test of the test piece 8 can be performed. Compared with the traditional downward pressure detection method, when the test piece 8 is squeezed downward, it will cause the test piece 8 to extend and deform in all directions, so that it is necessary to add additional protective structures on both sides of the test piece 8. The scheme of the present application can avoid the test piece 8 from extending and deforming in all directions by stretching it upward, and simplifies the protective structure. When it is necessary to adjust the stretching position of the hydraulic cylinder 6, the motor 12 is started to drive the threaded rod 4 to rotate, and the meshing relationship between the threaded rod 4 and the threaded hole can drive the nut seat 5 to move in the storage box 3. When it moves to the appropriate position, due to the mutual meshing between the threaded rod 4 and the threaded hole, it can be automatically locked, so that it is convenient to adaptively adjust the stretching position according to actual conditions, and further improve the practicality of the device.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. When an element is referred to as being "assembled on", "installed on", "fixed on" or "set on" another element, it can be directly on the other element or there can also be a centered element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a centered element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An anti-progressive collapse test device, comprising a base (1), characterized in that: The base (1) is provided with a support suspension (2), a storage box (3) is fixedly connected to the support suspension (2), a threaded rod (4) is rotatably connected to the interior of the storage box (3), a nut seat (5) is slidably connected to the interior of the storage box (3), the nut seat (5) and the threaded rod (4) are threadedly connected, a hydraulic cylinder (6) is fixedly installed at the bottom of the nut seat (5), a support seat (7) is fixedly installed at the output end of the hydraulic cylinder (6), and the hydraulic cylinder (6) is started to drive the support seat (7) to stretch upwards, so as to perform a load detection test on the test piece (8); Both ends of the base (1) are provided with positioning seat assemblies (9), the positioning seat assembly (9) comprising a base (91), one side of the base (91) being arranged with a rounded corner, and two groups of gaps being provided inside the base (91), and the inner walls of the gaps being rotatably connected to connecting arms (92) via pin shafts; A support arm (10) is fixedly connected to the side wall of the nut seat (5), and the support arm (10) is slidably connected to the storage box (3); When conducting a progressive collapse resistance test, the two ends of the test piece (8) are detachably connected to the connecting arms (92) in the positioning seat assembly (9), and the top is detachably connected to the support seat (7); The base (91) is fixed on the base (1), and the connecting arm (92) is detachably connected to the test piece (8) via bolts.

2. The progressive collapse resistance test device according to claim 1, characterized in that: The base (1) and the supporting suspension (2) are fixedly connected, and a reinforcing seat (11) is also installed at the connection.

3. The progressive collapse resistance test device according to claim 2, characterized in that: The storage box (3) and the supporting suspension (2) are fixed by welding or bolt connection.

4. The progressive collapse resistance test device according to claim 2, characterized in that: The threaded rod (4) of the storage box (3) is rotatably connected in the storage box (3) via a bearing, the end of the threaded rod (4) is fixedly connected to a motor (12), and the motor (12) is installed in the storage box (3).

5. The progressive collapse resistance test device according to claim 4, characterized in that: A threaded hole matching the threaded rod (4) is provided inside the nut seat (5).

6. The progressive collapse resistance test device according to claim 5, characterized in that: The hydraulic cylinder (6) is detachably mounted on the nut seat (5) via bolts.

7. The progressive collapse resistance test device according to claim 6, characterized in that: The support seat (7) and the test piece (8) are detachably connected via bolts.

8. The progressive collapse resistance test device according to claim 7, characterized in that: The test piece (8) comprises a column (81), and steel beams (82) are installed on both sides of the column (81) by bolts.

9. The progressive collapse resistance test device according to claim 8, characterized in that: The number of the support arms (10) is two, and a sliding groove (13) adapted to the support arms (10) is provided on the side wall of the storage box (3).

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