Shock wave resistance testing device for bidirectional plate engineering structure

Abstract

The utility model relates to a shock wave resistance testing device for a bidirectional plate engineering structure, and relates to the technical field of protective engineering. Comprising a supporting part, an upper channel steel frame, a lower channel steel frame and a reference test plate or bidirectional plate engineering structure, the hoisting ring is mounted in the center of the top surface, and the angle steel is mounted at one vertex of the top surface; the lower channel steel frame is fixedly mounted on the angle steel, the upper channel steel frame is connected with the lower channel steel frame through bolts, and the reference test board or the bidirectional board engineering structure is clamped between the upper channel steel frame and the lower channel steel frame; a pressure sensor is arranged at a measuring point position on the reference test board; acceleration sensors, displacement sensors and strain gauges are installed at measuring point positions on the two-way plate engineering structure. According to the utility model, the anti-knock performance and the dynamic response of the engineering structure are accurately tested on the premise that the engineering structure is not damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protective engineering, specifically to a bidirectional plate engineering structure shock wave resistance performance testing device. BACKGROUND

[0002] Explosion shock wave has the characteristics of great effect power, short pulse time and complex damage effect, and the anti-blast performance test of protective engineering structure needs to carry out a large number of dynamic response parameter tests to accurately evaluate the anti-blast capacity of engineering structure.

[0003] The engineering anti-blast test generally adopts the method of equivalent scaled test for testing, which has the characteristics of low test cost and same explosion damage effect. The anti-blast test of engineering structure is generally tested by installing and fixing sensors in the holes in the engineering structure. The holes in the engineering structure not only cause stress concentration of the engineering structure, but also damage the overall stress condition of the engineering structure, which further adversely affects the accurate evaluation of the real anti-blast performance of the engineering structure. UTILITY MODEL CONTENT

[0004] To solve at least one of the technical problems in the background art, the utility model provides a bidirectional plate engineering structure shock wave resistance performance testing device, which accurately tests the anti-blast performance and dynamic response of the engineering structure without damaging the engineering structure.

[0005] To achieve the above purpose, the utility model provides a bidirectional plate engineering structure shock wave resistance performance testing device, which comprises: a support part, an upper channel steel frame, a lower channel steel frame and a reference test plate or a bidirectional plate engineering structure.

[0006] The support part has four, a lifting ring is installed at the center position of the top surface, and an angle steel is installed at one vertex position of the top surface.

[0007] The lower channel steel frame is fixedly installed on the angle steel, the upper channel steel frame is connected with the lower channel steel frame through fasteners, and the reference test plate or the bidirectional plate engineering structure is clamped between the upper channel steel frame and the lower channel steel frame; pressure sensors are installed at the measuring point positions on the reference test plate; acceleration sensors, displacement sensors and strain gauges are installed at the measuring point positions on the bidirectional plate engineering structure.

[0008] Further, the four vertices of the angle steel installed on the support part form a rectangle, and the center positions of the top surfaces of the four support parts also form a rectangle.

[0009] Further, the upper channel steel frame and the lower channel steel frame are rectangular frames, the inner length of the rectangular frame is less than the length of the test piece, the outer length of the rectangular frame is greater than the length of the test piece, and the cross section of the side of the rectangular frame is a groove shape.

[0010] Further, the measuring points on the benchmark test plate and the bidirectional plate engineering structure are arranged on the axis of symmetry and the diagonal of the rectangle.

[0011] Further, the bidirectional plate engineering structure is an engineering actual component.

[0012] Further, the pressure sensor mounting hole on the benchmark test plate is a trapezoidal hole, with a large hole diameter of 160 mm, a small hole diameter of 120 mm, and a large hole height of 10 mm.

[0013] Further, the support part is a square prism.

[0014] The beneficial effects of the utility model lie in:

[0015] The utility model provides a kind of bidirectional plate engineering structure shock wave performance testing device, adopts channel steel frame structure, and clamps benchmark test plate or bidirectional plate engineering structure test piece.Adopting support part plays both fixing effect, and can leave gap for sensor.The utility model realizes accurately testing the blast resistance and dynamic response of engineering structure under the premise of not damaging engineering structure.It has the advantages such as full testing parameter, low measurement cost, wide application range, etc., can satisfy various test requirements in various scenes. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model;

[0017] Figure 2 It is the pressure sensor position schematic diagram of benchmark test plate of the utility model;

[0018] Figure 3 It is the measuring point arrangement schematic diagram of bidirectional plate engineering structure of the utility model;

[0019] Figure 4 For the application of the utility model testing device, equivalent test method is adopted, and the effect of checking and verifying is carried out by the method of combining numerical simulation and test verification Figure 1 .

[0020] In the drawing: 1-upper channel steel frame, 2-benchmark test plate, 3-lower channel steel frame, 4-support part, 5-angle steel, 6-hoisting ring, 7-fixing bolt, 8-pressure sensor, 9-bidirectional plate engineering structure. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be described clearly and completely below, 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 the ordinary skilled in the art without creative labor are within the protection scope of the utility model.

[0022] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the application described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0023] In the present application, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "in", "out", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0024] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "up" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For the ordinary skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0025] In addition, the terms "mount", "set", "provided with", "connected", "connected", "sleeved" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For the ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The utility model proposes two -way board engineering structure anti -shock wave performance test device, in order to be accurate test two -way board engineering structure's anti -explosion performance and dynamic response under the premise of not destroying two -way board engineering structure.

[0027] The explosion shock wave performance test of the protective engineering structure mainly includes explosion shock wave pressure test and protective engineering structure dynamic response test. The shock wave pressure test mainly tests the reflection pressure of the explosion shock wave on the surface of the protective engineering structure, can truly reflect the stress condition of the surface of the engineering structure, and is a key input parameter for studying the dynamic response of the engineering structure. The dynamic response test of the protective engineering structure mainly tests the displacement, acceleration, stress and strain of the key nodes of the protective engineering structure, and is a main index for studying the explosion resistance of the engineering structure.

[0028] As shown in Figures 1-3 The utility model provides a kind of bidirectional plate engineering structure shock wave performance testing device, comprising: support part 4, upper channel steel frame 1, lower channel steel frame 3 and reference test plate 2 or bidirectional plate engineering structure 9;

[0029] Support part 4 is 4, installs lifting ring 6 at the top surface center position, installs angle steel 5 at one vertex position of top surface;Support part can be cement pier etc. The upper surface distance of support part ground height is H, H range is 0.7~0.8 meters, and it is convenient to install and adjust the sensor of lower surface and observe lower surface deformation.

[0030] Lower channel steel frame 3 is fixedly installed on angle steel 5, and welding layer is formed between angle steel and the lower surface of lower channel steel frame, upper channel steel frame 1 is connected with lower channel steel frame 3 by fastener, reference test plate 2 or bidirectional plate engineering structure 9 is clamped between upper channel steel frame 1 and lower channel steel frame 3;Pressure sensor 8 is installed on the measuring point position of reference test plate 2;Acceleration sensor, displacement sensor and strain gauge are installed on the measuring point position of bidirectional plate engineering structure 9. Among them, reference test plate 2 is used for shock wave pressure equivalent test, and bidirectional plate engineering structure 9 is used for dynamic response test.

[0031] When using reference test plate 2, pressure sensor 8 is installed on the measuring point position of reference test plate 2;Upper channel steel frame 1 and lower channel steel frame 3 are rectangular frame, reference test plate 2 is placed in the middle of upper channel steel frame 1 and lower channel steel frame 3, the inner length of rectangular frame is less than the length of test piece, the outer length of rectangular frame is greater than the length of test piece, and the edge cross section of rectangular frame is groove shape;There are through holes on the four edges of upper channel steel frame 1 and lower channel steel frame 3, and fixed bolt 7 passes through the through hole to clamp the edge of reference test plate 2. Fastener can adopt fixed bolt 7, so as to realize detachable connection, and it is convenient to replace reference test plate 2 or bidirectional engineering plate structure 9.

[0032] When the bidirectional plate engineering structure 9 is used, the acceleration sensor, the displacement sensor and the strain gauge are installed at the measuring point positions on the bidirectional plate engineering structure 9; the upper channel steel frame 1 and the lower channel steel frame 3 are rectangular frames, the bidirectional plate engineering structure 9 is placed in the middle of the upper channel steel frame 1 and the lower channel steel frame 3, the inner edge length of the rectangular frame is smaller than the edge length of the test piece, the outer edge length of the rectangular frame is larger than the edge length of the test piece, and the edge cross section of the rectangular frame is a groove shape; the upper channel steel frame 1 and the lower channel steel frame 3 have through holes on the four edges, and the fixing bolts 7 pass through the through holes to clamp the edges of the bidirectional plate engineering structure 9.

[0033] Further optimize the technical scheme, the lifting ring is connected with the steel bar embedded in the support part, the lifting ring is arranged at the center of the upper surface of the support part, the lifting ring 6 is semicircular, the support part is placed to the test position through the lifting ring, when placed, the center of the support part forms a rectangle, and the four vertices of the installed angle steel form a rectangle. The support part 4 is a square prism shape. The upper surface size of the support part is smaller than the lower surface size, specifically, the upper and lower surfaces of the support part are both square, and the angle steel can be arranged at the vertex of the square upper surface.

[0034] Further optimize the technical scheme, the upper channel steel frame 1 and the lower channel steel frame 3 are rectangular frames, the groove direction of the upper channel steel frame is vertically upward, and the groove direction of the lower channel steel frame is vertically downward; the inner edge length of the upper and lower channel steel frames is smaller than the edge length of the test piece, and the outer edge length of the upper channel steel frame and the lower channel steel frame is larger than the edge length of the test piece; the through hole is arranged at the position of the test plate. When the upper and lower channel steel frames are fixed on the support part, it is ensured that the overlapping area of the upper and lower channel steel frames on each support part is not less than 1% of the original test area, so as to ensure firm installation.

[0035] Further optimize the technical scheme, the reference test plate 2 and the measuring points on the bidirectional plate engineering structure 9 are arranged on the axis of symmetry and the diagonal line of the rectangle.

[0036] Further optimize the technical scheme, the bidirectional plate engineering structure 9 is an engineering actual component.

[0037] Further optimize the technical scheme, when the shock wave pressure equivalent test is carried out, the steel plate is used as the reference test plate 2, and the thickness is 16mm. When the reference test plate 2 is used, the pressure sensor 8 is installed at the measuring point position on the reference test plate 2; the pressure sensor installation hole on the reference test plate 2 is a trapezoidal hole, the large hole diameter is 160mm, the small hole diameter is 120mm, and the large hole height is 10mm.

[0038] The utility model provides a kind of two-way plate engineering structure shock wave performance testing device, adopts channel steel frame structure, and clamps reference test plate or two-way plate engineering structure test piece.

[0039] The working principle of the utility model is as follows:

[0040] I. Shock wave pressure equivalent test

[0041] To avoid the installation of various types of sensors to the artificial damage and destruction of engineering structure test piece, maintain the integrity and integrity of the test engineering structure. According to the different test methods of anti-explosion shock wave performance index parameters, combined with the installation and debugging method of different types of sensors, determine the equivalent test method of anti-explosion shock wave performance of protective engineering structure.

[0042] Shock wave pressure test is mainly based on the propagation law and mechanism of explosion shock wave, to avoid damaging any part of the prototype engineering structure, using reference test engineering structure, through the same fixed way, the same explosion equivalent, the same explosion distance, the same explosion measuring point, to realize the equivalent input and equivalent response of reference test engineering structure and prototype engineering structure. The selection of reference engineering structure should consider the impact of test piece shock vibration, and select the reference object similar or identical to the physical parameters and geometric parameters of engineering structure.

[0043] As shown in Figure 2 When performing shock wave pressure equivalent test, steel plate is used as reference test plate 2, and the thickness is 16mm. The pressure sensor mounting hole on the reference test plate 2 is a trapezoidal hole, and the large hole diameter is 160mm, the small hole diameter is 120mm, and the large hole height is 10mm.

[0044] II. Dynamic response test

[0045] When performing dynamic response test, the two-way plate engineering structure 9 used for test is an engineering actual component.

[0046] Dynamic response test mainly uses the method of combining original data test and data processing analysis to ensure the authenticity, accuracy and reliability of data.

[0047] The acceleration sensor is directly pasted on the back of the test piece through high-strength resin glue, to ensure the integrity of the engineering structure.

[0048] Displacement measurement employs a combination of high-speed photogrammetry and displacement sensor measurements to ensure accurate and comprehensive results. Subsequent data processing and analysis calculate and verify the acceleration values ​​against the actual measured values, ensuring the reliability of the results. High-speed photography not only records the displacement of engineering structures but also accurately reflects their macroscopic deformation characteristics.

[0049] Strain gauges are attached to the back of the engineering structure facing the explosion to measure the stress-strain and record the deformation characteristics of the structure.

[0050] Based on the geometric shape and dimensions of the specimen structure and the characteristics of the shock wave, the array of key points of the engineering structure is determined as follows: Figure 3 As shown, ensure that measuring points are arranged in all axially symmetrical directions of the specimen.

[0051] III. Numerical Simulation and Experimental Verification

[0052] Using the aforementioned testing apparatus and employing an equivalent testing method, verification was conducted through a combination of numerical simulation and experimental validation. (See attached document.) Figure 4 .

[0053] The engineering structure shock wave resistance testing device proposed in this utility model has the advantages of complete test parameters, low measurement cost, and wide application range, and can meet various test requirements in various scenarios.

[0054] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A device for testing the performance of a bidirectional panel engineering structure against a shock wave, characterized in that, The utility model relates to a test device for the test of the dynamic performance of the reference test plate (2) and the bidirectional plate engineering structure (9) of the bidirectional plate engineering structure (9) and the reference test plate (2) are fixedly installed on the support part (4), the upper channel steel frame (1), the lower channel steel frame (3) and the reference test plate (2) or bidirectional plate engineering structure (9) are formed. The support part (4) is installed with a lifting ring (6) at the center of the top surface and an angle steel (5) at one vertex of the top surface. The lower channel steel frame (3) is fixedly installed on the angle steel (5), the upper channel steel frame (1) is connected with the lower channel steel frame (3) through fasteners, the reference test plate (2) or bidirectional plate engineering structure (9) is clamped between the upper channel steel frame (1) and the lower channel steel frame (3), pressure sensors (8) are installed at the measuring point positions on the reference test plate (2), and acceleration sensors, displacement sensors and strain gauges are installed at the measuring point positions on the bidirectional plate engineering structure (9). The four vertices of the angle steel (5) installed on the support part (4) form a rectangle, and the centers of the top surfaces of the four support parts also form a rectangle.

2. The apparatus for testing the anti-shock wave performance of a bidirectional plate engineering structure according to claim 1, wherein, The upper channel steel frame (1) and the lower channel steel frame (3) are rectangular frames, the inner length of the rectangular frame is smaller than the length of the test piece, the outer length of the rectangular frame is larger than the length of the test piece, and the cross section of the side of the rectangular frame is a groove shape.

3. The apparatus for testing the anti-shock wave performance of a bidirectional plate engineering structure according to claim 2, wherein, The measuring points on the reference test plate (2) and the bidirectional plate engineering structure (9) are arranged on the axial symmetry lines and the diagonal lines of the rectangle.

4. The apparatus for testing the anti-shock wave performance of a bidirectional plate engineering structure according to claim 1 or 3, characterized in that, The bidirectional plate engineering structure (9) is an engineering actual component.

5. The apparatus for testing the anti-shock wave performance of a bidirectional plate engineering structure according to claim 4, wherein, The pressure sensor mounting hole of the reference test plate (2) is a trapezoidal hole, the large hole has a diameter of 160 mm, the small hole has a diameter of 120 mm, and the large hole has a height of 10 mm.

6. The apparatus for testing the anti-shock wave performance of a bidirectional plate engineering structure according to claim 4, wherein, The support part (4) is a square prism.

7. The apparatus of claim 1, wherein, ​

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