Fixing device for concrete slab explosion test

Abstract

The invention discloses a fixing device for a concrete slab explosion test, which comprises a fixing seat, and the fixing seat comprises a first supporting unit and a second supporting unit which are detachably arranged; first clamping assemblies are arranged at the top ends of the first supporting unit and the second supporting unit; the fixing base is further provided with a monitoring unit and a blasting assembly fixing unit. The free end of the blasting assembly fixing unit can be close to or away from the fixing base, the second clamping unit comprises a first clamping assembly and a second clamping assembly which are detachable, and the second clamping assembly can move in the vertical direction of the first clamping assembly; the device can effectively simulate the real clamping and stress conditions of the two ends of a concrete slab in a building under the action of an explosion load, greatly improves the accuracy of an anti-explosion performance loading test of the concrete slab with the two ends clamped and supported, meets the test of different to-be-tested assemblies at the same time, and improves the test efficiency. The test efficiency is improved and the cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of structural explosion test and relates to a fixing device used for concrete slab explosion test. Background Art

[0002] At present, the research on the explosion resistance of concrete slabs is mainly carried out through explosion tests. The one-way supported concrete slabs are fully fixed at both ends in the real building structure. If a real building is built in the test to meet the requirements of its boundary conditions, it will not only be costly and time-consuming, but also have extremely low utilization rate; the traditional concrete slab explosion test device is simple and it is difficult to meet the loading requirements of concrete slabs of different sizes, which limits the research on explosion resistance and has poor stability; in the structural explosion test, due to the short explosion time and strong destructiveness, the test device must have certain explosion resistance itself, so it is often very heavy and needs to be transported by a crane, which is complicated to operate and has low efficiency; at present, most of the concrete slab tests are contact explosion studies, which have certain limitations for the test methods that meet different explosion distances. The existing concrete slab explosion test device is difficult to meet the needs of accurately controlling the direction of the movement position of the blasting component.

[0003] Based on the above reasons, it is necessary to propose a test fixture that can meet the boundary conditions of fixed supports at both ends, realize loading of concrete slabs of different sizes, and facilitate transportation, as well as a test method that can meet the requirements of loading at different explosion distances. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a fixing device for concrete slab explosion test, thereby solving the technical problems in the prior art that the explosion test device cannot be fixed at both ends, cannot accurately control the movement position of the blasting component, cannot load concrete slabs of different sizes, and has lateral inclination.

[0005] The present invention is achieved through the following technical solutions: A fixing device for a concrete slab explosion test comprises a fixing seat, wherein the fixing seat comprises a first supporting unit and a second supporting unit which are detachably arranged; The top ends of the first supporting unit and the second supporting unit are both provided with a second clamping assembly; The fixing seat is also provided with a monitoring unit and a blasting component fixing unit; The free end of the blasting assembly fixing unit can be close to or away from the fixing seat; Side support members are also provided on both sides of the first support unit and the second support unit; The second clamping unit comprises a detachable first clamping assembly and a second clamping assembly, wherein the second clamping assembly can move in a vertical direction of the first clamping assembly; an elastic member is provided on one side of the first clamping assembly close to the assembly to be blasted.

[0006] Preferably, the first supporting unit and the second supporting unit both include a first supporting assembly and a second supporting assembly which are vertically connected; and the second clamping unit is arranged at a free end of the second supporting assembly.

[0007] Preferably, the first support assembly includes a first support member, and a second support member and a third support member which are vertically connected to the first support member.

[0008] Preferably, the second support assembly includes a fourth support member and a fifth support member arranged in parallel; the fourth support member is vertically connected to the first support member and the second support member; the fifth support member is vertically connected to the first support member and the third support member; a lateral support member arranged on one side of the fourth support member, one end of which is connected to the fourth support member, and the other end of which is connected to the first support member; a lateral support member arranged on one side of the fifth support member, one end of which is connected to the fifth support member, and the other end of which is connected to the first support member.

[0009] Preferably, the angle between the lateral support member and the first support member is 45°~60°.

[0010] Preferably, a first oblique support and a second oblique support are connected between the first support assembly and the second support assembly.

[0011] Preferably, the first clamping assembly comprises a first clamping portion and a second clamping portion which are vertically connected; a first long hole is provided on the first clamping portion in a vertical direction; and a second long hole is provided on the second clamping portion in a horizontal direction; The second clamping assembly comprises a third clamping portion and a fourth clamping portion which are vertically connected, and a third long hole is provided on the fourth clamping portion along the vertical direction; The first elongated hole is arranged in cooperation with the third elongated hole.

[0012] Preferably, the blasting assembly fixing unit comprises a first fixing rod and a second fixing rod which are connected to each other; the first fixing rod is fixedly connected to the fixing seat; the second fixing rod comprises a fixing section and a movable section arranged inside the fixing section; the movable section is movably connected along the axial direction of the fixing section.

[0013] Preferably, the blasting assembly fixing unit comprises a first fixing rod and a blasting assembly position adjusting unit; The blasting assembly position adjustment unit comprises a first adjustment section and a second adjustment section which are connected to each other, wherein the free end of the first adjustment section is hinged to the first fixing rod, and the second adjustment section can rotate around the connection between the first adjustment section and the second adjustment section; The free end of the second adjusting section is provided with two blasting assemblies.

[0014] Preferably, a plurality of anchor bolts are also provided at the bottom of the fixing seat.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The invention discloses a fixing device for a concrete slab explosion test. The fixing seat is the foundation of the whole device and is responsible for stably supporting the whole test system to ensure that no displacement or overturning occurs during the explosion test. The fixing seat is composed of a first support unit and a second support unit. This detachable design facilitates the transportation and installation of the device and is flexibly adjusted according to different test requirements, so that the fixing device is suitable for components to be blasted of different sizes. The first support unit and the second support unit, the two support units together constitute the main load-bearing structure of the fixing seat, and they are independent but work together to ensure that the concrete slab is supported uniformly and stably during the test. The top of each support unit is equipped with a first clamping assembly, which is used to firmly clamp the concrete slab to prevent it from moving or falling off under the impact of the explosion, thereby ensuring the accuracy of the test data. The monitoring unit is used to record key parameters in the test process in real time, such as stress changes, displacement conditions, and propagation of explosion shock waves of the concrete slab, so as to analyze the test data later. The blasting component fixing unit is designed to be free to approach or move away from the fixing seat. This feature enables the operator to accurately control the distance between the explosive or blasting device and the concrete slab, thereby achieving accurate control of the explosion intensity. The design also takes the safety of the test into consideration. By adjusting the distance between the blasting assembly and the concrete slab, accidental damage or casualties caused by being too close can be avoided. At the same time, more importantly, lateral supports are also provided on both sides of the first support unit and the second support unit, which effectively improves the stability of the device, avoids lateral tipping during the test, and ensures the safety of the test. This fixing device for concrete slab explosion test provides a safe, reliable and efficient platform for the explosion test of concrete slabs through its detachable support unit, stable first clamping assembly, flexible blasting assembly fixing unit, equipped monitoring unit and stable lateral support. It can not only ensure the accuracy of the test data, but also protect the safety of the test personnel and equipment to the maximum extent. In addition, by providing a detachable first clamping assembly and a second clamping assembly, and the second clamping assembly can move in the vertical direction of the first clamping assembly; an elastic member is provided on the first clamping assembly, close to the side of the assembly to be blasted, so that the device can meet the experimental requirements of concrete slabs of different specifications, and the safety of the device is improved by providing an elastic member.

[0016] Furthermore, the first support unit and the second support unit both include a first support assembly and a second support assembly which are vertically connected; the second clamping unit is arranged at the free end of the second support assembly, and the load from the concrete slab and the explosion impact can be more effectively dispersed by the vertically connected first support assembly and the second support assembly, thereby improving the stability of the entire device. The second clamping unit is arranged at the free end of the second support assembly, so that the clamping point is closer to the concrete slab, thereby achieving a more stable clamping effect. This design helps to prevent the concrete slab from being displaced or falling off during the explosion process, thereby ensuring the accuracy and safety of the test. Since the first support assembly and the second support assembly are vertically connected, this design provides more adjustment space for the second clamping unit, and the operator can flexibly adjust the position and angle of the second clamping unit according to the size, shape and test requirements of the concrete slab to ensure that the clamping effect is optimal. This design of the device also makes it compatible with different types of concrete slab explosion tests. Whether it is a small or large test, different test requirements can be adapted by adjusting the support assembly and the second clamping unit. The structure can more effectively reduce the impact of explosion shock on the concrete slab and the surrounding environment, which helps to protect the test equipment, reduce the interference of noise and vibration on the surrounding environment, and reduce the risk of accidents during the test. The stable support and clamping structure also means that during the test, the concrete slab is less likely to break or splash, thereby protecting the safety of the test personnel. Due to the reasonable and stable structural design of the device, it can provide a more accurate and controllable environment for the explosion test of the concrete slab. This helps to reduce errors and uncertainties in the test process and improve the accuracy and reliability of the test data. The stable support and clamping structure also makes the device more repeatable in multiple tests. This helps researchers to conduct a more in-depth analysis and comparison of the test data, so as to draw more accurate and reliable conclusions. In summary, the first support unit and the second support unit both include a first support assembly and a second support assembly that are vertically connected, and the second clamping unit is arranged at the free end of the second support assembly. This arrangement has shown significant beneficial effects in terms of structural stability, flexibility and adaptability, safety and test accuracy. Furthermore, the first support assembly includes a first support member, and a second support member and a third support member which are vertically connected to the first support member. This structure effectively improves the structural stability of the device. The three support members jointly bear the weight of the concrete slab and the impact force of the explosion, making the load distribution more uniform. This helps to reduce the risk of deformation or damage of the support member due to excessive force at a single point, and improves the durability and reliability of the entire device. In the explosion test, due to the effect of the explosion shock wave, the concrete slab may produce a certain lateral displacement or vibration. This structure can prevent the device from tipping over or tilting, ensuring the smooth progress of the test process.

[0017] Furthermore, the second support assembly includes a fourth support member and a fifth support member arranged in parallel; the fourth support member is vertically connected to the first support member and the second support member; the fifth support member is vertically connected to the first support member and the third support member. The second support assembly forms a multi-dimensional support network with the first support assembly through two parallel and vertically connected supports. This network structure not only enhances the stability in the horizontal direction, but also further consolidates the stability of the overall structure through vertical connection. In the explosion test, the concrete slab may be subjected to forces in various directions, including horizontal shear force and vertical impact force. The design of the second support assembly helps to prevent the device from twisting or deforming when subjected to these forces, ensuring the accuracy and safety of the test. The parallel arrangement of the fourth support member and the fifth support member enables the load to be more evenly distributed over the entire support system. This design reduces the risk of damage to the support member due to local stress concentration and improves the bearing capacity of the entire device. By vertically connecting the first support assembly and the second support assembly, the rigidity of the device is significantly enhanced. Rigidity is an important indicator for resisting deformation and maintaining shape stability, which is crucial to ensuring the stable position of the concrete slab during the test. The modular design of the second support assembly allows it to be adjusted according to specific test requirements. Since the support components are connected vertically and the design is concise and clear, the assembly process of the entire device is relatively simple and quick, which helps to reduce installation costs and time and improve installation efficiency. During long-term use, if a support member is damaged or needs to be replaced, it can be easily removed from the device and repaired or replaced. This easy-to-maintain feature helps to extend the service life of the entire device; in addition, the lateral support member arranged on one side of the fourth support member is connected to the fourth support member at one end and connected to the first support member at the other end; the lateral support member arranged on one side of the fifth support member is connected to the fifth support member at one end and connected to the first support member at the other end. The entire structure effectively ensures the overall stability of the device through four lateral supports. In summary, the second support assembly includes a fourth support member and a fifth support member arranged in parallel, and is connected to the first support assembly in a vertical manner. The entire structure is provided with four lateral supports, which has shown significant beneficial effects in enhancing structural stability, optimizing load distribution, and simplifying installation and maintenance.

[0018] Furthermore, the angle between the lateral support member and the first support member is 45°~60°. First, this angle can provide sufficient support force while maintaining the stability and balance of the structure. This angle setting helps to disperse and resist forces and pressures from different directions, reducing the risk of deformation or damage to the structure due to uneven force. In addition, in mechanics, the 45°~60° angle can more effectively convert vertical or horizontal forces into component forces along the direction of the support member, thereby enhancing the bearing capacity of the entire structure. That is, under the conditions of the same material and size, the lateral support member with an angle of 45°~60° can more effectively support and reinforce the main structure. At the same time, in a limited space, the design of the 45°~60° angle can maximize the use of space without sacrificing stability, making the overall design more compact and efficient.

[0019] Furthermore, a first oblique support and a second oblique support are connected between the first support assembly and the second support assembly. The addition of the oblique support forms one or more triangular structures between the first support assembly and the second support assembly. The triangle is one of the most stable shapes in geometry and can effectively resist forces from all directions, thereby further enhancing the structural stability of the entire device. In the explosion test, the concrete slab will be subjected to horizontal shear force, causing the device to shift laterally. The presence of the oblique support can effectively resist this lateral force and prevent the device from moving or deforming unnecessarily. The oblique support can disperse the load that may originally be concentrated at a certain support point or in a certain direction to the entire support system, which helps to reduce the risk of damage to the support member due to local stress concentration and improve the bearing capacity and service life of the entire device. The presence of the oblique support enhances the connection stiffness between the support systems, so that the entire device can maintain better shape stability when subjected to external forces. This is crucial to ensuring the stable position of the concrete slab during the test. When conducting tests in a vibration environment, the oblique support can effectively absorb and disperse vibration energy and reduce the risk of damage to the device due to vibration, which helps to improve the seismic performance of the device and ensure the smooth progress of the test. Although the oblique supports increase the complexity of the device, they also reduce the use of other structural materials to a certain extent. Through reasonable design and optimization, the manufacturing cost can be reduced while ensuring structural stability. The oblique supports are usually made of the same material as the support assembly and fixed by welding, bolting, etc. This design makes the entire device more convenient and quick during installation and maintenance. In summary, the arrangement of the first oblique support and the second oblique support connected between the first support assembly and the second support assembly has shown significant beneficial effects in further enhancing structural stability, optimizing load distribution, improving seismic performance, and simplifying design and manufacturing. This design helps to ensure the accuracy and safety of concrete slab explosion tests and improve the reliability of test results.

[0020] Further, the blasting assembly fixing unit includes a first fixing rod and a second fixing rod connected and arranged; the first fixing rod is fixedly connected to the fixing seat; the second fixing rod includes a fixing section and a movable section arranged inside the fixing section; the movable section is movably connected along the axial direction of the fixing section, and the movable section is movably connected along the axial direction of the fixing section, so that the overall length of the second fixing rod can be adjusted within a certain range, and this adjustment function enables the blasting assembly fixing unit to adapt to blasting assemblies of different sizes and shapes, thereby improving the versatility and flexibility of the device. By adjusting the position of the movable section, the blasting assembly can be accurately positioned and fixed, which helps to ensure the stability and reliability of the blasting assembly during the test and reduce the test error caused by position deviation. The fixed connection between the first fixing rod and the fixing seat provides a stable support foundation for the blasting assembly, while the adjustability of the second fixing rod further enhances the fixing effect. The two work together to enable the blasting assembly to remain stable during the test and not easily displaced or falling off. The stable fixing effect helps to prevent the blasting assembly from loosening or falling off due to unexpected situations such as vibration, impact, etc. during the test, thereby protecting the safety of the test personnel and the surrounding environment. Since the second fixing rod is adjustable, the operator can adjust the position of the movable section as needed when installing and removing the blasting assembly, making the installation and removal process smoother and more efficient. The adjustable design reduces the need to frequently replace the fixings due to size mismatch, thereby saving installation and removal time. By accurately adjusting the position of the blasting assembly, the wear and damage caused by position deviation can be reduced, which helps to extend the service life of the blasting assembly and its fixing unit and reduce maintenance costs. The stable fixing effect also helps to reduce the stress concentration caused by vibration and impact, thereby improving the durability and reliability of the entire device. In summary, this design of the blasting assembly fixing unit has shown significant beneficial effects in terms of flexible adjustment and adaptation, improving the fixing effect and safety, facilitating installation and removal, and extending the service life. This design helps to ensure the smooth progress of the blasting test and the accuracy of the test results.

[0021] Furthermore, the bottom of the fixing seat is also provided with a plurality of anchor bolts. Firstly, the anchor bolts can effectively transfer the weight of the fixing seat and the load it carries to the foundation, thereby improving the overall load-bearing capacity. By tightening the anchor bolts, the fixing seat can be effectively prevented from being displaced or tilted due to external forces during use, thereby ensuring the precise positioning of the equipment. Therefore, the provision of anchor bolts at the bottom of the fixing seat can significantly improve the structural stability and safety of the fixing device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A three-dimensional diagram of a fixing device for concrete slab explosion test in the present invention; Figure 2 It is a front view of a fixing device for concrete slab explosion test in the present invention; Figure 3 It is a side view of a fixing device for concrete slab explosion test in the present invention; Figure 4 A top view of a fixing device for concrete slab explosion test in the present invention; Figure 5 It is a schematic diagram of the structure of the fixing seat in the present invention; Figure 6 It is a structural schematic diagram of the first supporting assembly in the present invention; Figure 7 It is a schematic diagram of the arrangement of the anchor bolt installation holes in the present invention; Figure 8 It is a structural schematic diagram of an anchor bolt installation hole in one embodiment of the present invention; Fig. 9 It is a schematic structural diagram of the first clamping assembly in the present invention; Fig.10 It is a schematic diagram of the structure of the fixing member in the present invention; Fig.11 It is a schematic diagram of the structure of the support groove and the pressing plate in the present invention; Fig.12 It is a structural schematic diagram of the mobile component in the present invention; Fig.13 It is a structural schematic diagram of the first monitoring unit fixing member in the present invention; Fig.14 It is a structural schematic diagram of the blasting assembly fixing unit in the present invention; Fig.15 is a schematic structural diagram of the first fixing rod in the present invention; Fig.16 is a schematic structural diagram of the second fixing rod in the present invention; Fig.17 It is a schematic diagram of the structure of the first limiting part and the second limiting part in the present invention; Fig.18 is a schematic structural diagram of the second clamping unit in the present invention; Fig.19It is a schematic diagram of the structure of the first clamping assembly and the second clamping assembly in the present invention; Fig. 20 It is a schematic diagram of the arrangement of the third elongated hole in the present invention; Fig.21 It is a schematic diagram of the arrangement of the first long strip hole and the second long strip hole in the present invention; Fig. 22 It is a structural schematic diagram of the blasting assembly position adjustment unit in the present invention; Fig.23 is a schematic structural diagram of a second monitoring unit fixing member in the present invention; Fig.24 The figure is a schematic structural diagram of a preferred fixing device for concrete slab explosion test in the present invention.

[0024] Wherein: 1, fixing seat, 2, first supporting unit, 3, second supporting unit, 4, first clamping assembly, 41, supporting groove, 42, pressing plate, 43, fixing member, 431, screw rod, 432, first nut, 44, second through hole, 45, third through hole, 5, first supporting assembly, 6, second supporting assembly, 51, first supporting member, 52, second supporting member, 53, third supporting member, 54, first through hole, 61, fourth supporting member, 62, fifth supporting member, 71, first oblique support, 72, second oblique support, 8, blasting assembly fixing unit, 81, first fixing rod, 82, second fixing rod, 821, fixing section, 822, movable section, 823, threaded section, 824, second nut, 825, first limiting portion, 8 26. Second limiting portion, 83. Fourth through hole, 9. Moving component, 10. First monitoring unit fixing part, 11. Blasting component, 12. Component to be blasted, 13. Lateral support member, 14. Anchor bolt, 15. Anchor bolt mounting hole, 16. Second clamping unit, 161. First clamping component, 1611. First clamping portion, 1612. Second clamping portion, 1613. First long hole, 1614. Second long hole, 162. Second clamping component, 1621. Third clamping portion, 1622. Fourth clamping portion, 1623. Third long hole, 17. Elastic member, 18. Blasting component position adjustment unit, 181. First adjustment section, 182. Second adjustment section, 19. Second monitoring unit fixing part, 191. Mounting groove. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figures 1 to 4 As shown, the present invention discloses a fixing device for concrete slab explosion test, comprising a fixing seat 1, wherein the fixing seat 1 comprises a first supporting unit 2 and a second supporting unit 3 which can be detachably arranged; a first clamping assembly 4 is arranged at the top of each of the first supporting unit 2 and the second supporting unit 3; a monitoring unit and an blasting assembly fixing unit 8 are also arranged on the fixing seat 1; the free end of the blasting assembly fixing unit 8 can be close to or away from the fixing seat 1.

[0032] like Figure 5 As shown, the first support unit 2 and the second support unit 3 both include a first support assembly 5 and a second support assembly 6 which are vertically connected. The first support assembly 5 and the second support assembly 6 can be arranged by welding or integrally arranged. Here, the first support assembly 5 is arranged horizontally, and the second support assembly 6 is arranged vertically upward on the first support assembly 5. The first clamping assembly 4 is arranged at the free end of the second support assembly 6. The first support assembly 5 includes a first support member 51, and a second support member 52 and a third support member 53 which are vertically connected to the first support member 51. The second support assembly 6 includes a fourth support member 61 and a fifth support member 62 which are arranged in parallel; the fourth support member 61 is vertically connected to the first support member 51 and the second support member 52; the fifth support member 62 is vertically connected to the first support member 51 and the third support member 53. A first oblique support 71 and a second oblique support 72 are connected between the first support assembly 5 and the second support assembly 6. The fourth support member 61 and the fifth support member 62 are vertically arranged, which not only play a supporting role in the vertical direction, but also provide a certain degree of elevation to reduce the reflection effect of the explosion shock wave on the bottom of the board.

[0033] In addition, for lateral support, the lateral support member 13 arranged on one side of the fourth support member 61 is connected to the fourth support member 61 at one end, and is connected to the first support member 51 at the other end; the lateral support member 13 arranged on one side of the fifth support member 62 is connected to the fifth support member 62 at one end, and is connected to the first support member 51 at the other end. By setting four lateral support members 13, the structural stability of the device is effectively improved. In addition, the angle between the lateral support member 13 and the first support member 51 is 45°~60°.

[0034] In addition, if Figure 6 As shown, the first support assembly 5 is provided with a plurality of first through holes 54, and the first support unit 2 and the second support unit 3 are detachably provided through the first through holes 54. In the specific scheme here, the second support member 52 and the third support member 53 on the first support unit 2 are each provided with a group of first through holes 54, and the second support member 52 and the third support member 53 of the second support unit 3 are each provided with a plurality of groups of first through holes 54, and the plurality of groups of first through holes 54 are all arranged along the length direction of the second support member 52 and the third support member 53. During use, the distance between the first support unit 2 and the second support unit 3 is effectively adjusted by extending the second support member 52 and the third support member 53 on the second support unit 3 into the second support member 52 and the third support member 53 on the first support unit 2 at different distances, and then fixing them through the corresponding first through holes 54.

[0035] In addition, if Figure 7-8 As shown, the bottom of the fixing base 1 in the present invention is also provided with a plurality of anchor bolt mounting holes 15, so that the device can be firmly fixed at the use position by the anchor bolts 14, thereby improving the stability of the structure.

[0036] In addition, if Fig. 9 as well as Fig.11 As shown, the first clamping assembly 4 includes a support groove 41, a pressure plate 42 and a fixing member 43; the fixing member 43 is used to realize a detachable connection between the support groove 41 and the pressure plate 42; the support groove 41 is fixedly arranged at the top of the fixing seat 1. The arrangement of the pressure plate 42 and the fixing member 43 enables the device to meet the loading of components 12 to be blasted with different thicknesses, is easy to operate, and improves the test efficiency.

[0037] Further, such as Fig.10 As shown, the fixing member 43 includes a screw rod 431 and two first nuts 432 . The screw rod 431 passes through the support groove 41 and the pressure plate 42 . The support groove 41 and the pressure plate 42 are sandwiched between the two first nuts 432 .

[0038] In addition, further Figure 1 as well as Fig.12As shown, a mobile component 9 is provided at the bottom of the fixed seat 1, and the mobile component 9 is arranged close to the ground. The mobile component 9 can be freely rotated and retracted to be fixed, which can be conveniently moved during transportation and can be rotated and retracted and hidden during the explosion test to achieve the stability of the overall device. The mobile component 9 is arranged close to the ground. The addition of mobile components such as rollers and tracks enables the entire device to be easily moved between different positions without relying on external lifting equipment or a large amount of manpower. This is particularly important when conducting field tests or when the test site needs to be frequently changed, and can significantly improve work efficiency. According to the specific design, the mobile component can adapt to different ground conditions, such as flat ground, slopes, and even slightly rough roads. This expands the scope of use of the device and enables it to be used in a wider range of environments. Through the mobile component, the operator can quickly move the device to the designated test position and adjust its direction and angle as needed. This flexibility enables the device to respond to test requirements more quickly, reduce waiting time, and improve test efficiency. Traditional fixed devices require a lot of manpower and time during installation and disassembly, while devices with mobile components can achieve position movement and fixation through simple operations, greatly reducing the workload of installation and disassembly. During the test, the device may be subjected to forces from all directions. The stable support of the mobile component can effectively prevent the device from accidentally tipping over or sliding, ensuring the safety of the test process. In some test scenarios, the ground may change due to various reasons, such as humidity, temperature, etc. The adaptability of the mobile component can ensure that the device can maintain a stable support state under different ground conditions, avoiding test errors or accidents caused by ground changes. The design of the mobile component allows operators to more easily access the key components of the device for maintenance and servicing, which helps to extend the service life of the device and reduce maintenance costs. When the device fails, the mobile component can quickly move the device to a convenient location for maintenance, which helps operators to troubleshoot and repair faster and reduce downtime. In summary, the design of the mobile component at the bottom of the fixed seat has shown significant beneficial effects in enhancing the mobility of the device, improving the flexibility and convenience of the test, improving the safety and stability of the device, and facilitating maintenance and servicing. This design enables the device to perform better in scenarios such as concrete slab explosion tests. In addition, further Figure 1 as well as Fig.13As shown, a first monitoring unit fixing part 10 is provided at the bottom of the first support unit 2. The explosion test will generate a strong explosion shock wave causing the device to vibrate violently. The first monitoring unit fixing part 10 is fixed to the bottom of the first support unit 2 by welding to fix the wire-type displacement sensor and reduce the error of the test result caused by vibration. The first monitoring unit fixing part 10 provides a stable support platform for the monitoring equipment installed at the bottom of the first support unit. This design ensures that the monitoring equipment will not be displaced or tilted due to vibration, impact or other external factors during the test, thereby ensuring the accuracy and reliability of the monitoring data. Stable support also helps to reduce the interference of the external environment on the monitoring equipment, such as wind, ground vibration, etc., further improving the accuracy of the monitoring data. The first monitoring unit fixing part is usually designed with a standardized interface or mounting hole, so that the monitoring equipment can be easily and quickly installed on the support unit. This design simplifies the installation process and reduces the difficulty and cost of installation. The design of the fixing part also takes into account the debugging requirements of the monitoring equipment, so that the debugging personnel can easily approach the equipment and make necessary adjustments and optimizations. By fixing the monitoring device at the bottom of the support unit, real-time and continuous monitoring of the test process can be achieved. Once an abnormal situation occurs during the test, the monitoring device can respond quickly and issue an alarm to remind the operator to take timely measures to ensure the safety of the test process. A stable monitoring platform also helps to improve the efficiency and quality of data collection, and provides a reliable basis for subsequent data analysis and processing, which helps researchers to more accurately understand the changing laws of the test process, optimize the test plan, and improve the test effect. The design of the first monitoring unit fixture also takes into account the maintenance and maintenance needs of the equipment. Through the fixture, the monitoring equipment can be easily disassembled and replaced, and necessary cleaning, calibration and maintenance work can be carried out, which helps to extend the service life of the equipment and reduce maintenance costs. In summary, the setting of the first monitoring unit fixture at the bottom of the first support unit has shown significant beneficial effects in providing a stable monitoring platform, facilitating the installation and commissioning of the monitoring equipment, improving the efficiency and safety of the test, and facilitating maintenance and maintenance. This design helps to ensure the smooth progress of the test process and the accuracy and reliability of the monitoring data.

[0039] Further, in a specific preferred embodiment, as Fig.14 As shown, the blasting assembly fixing unit 8 includes a first fixing rod 81 and a second fixing rod 82 which are connected and arranged; the first fixing rod 81 is fixedly connected to the fixing seat 1; the first fixing rod 81 also plays a role of raising the height to meet the needs of setting the explosion distance.

[0040] like Fig.15 As shown, the first fixing rod 81 is provided with a fourth through hole 83 , and the second fixing rod 82 is connected to the first fixing rod 81 through the fourth through hole 83 .

[0041] like Fig.16 As shown, the second fixing rod 82 includes a fixing section 821 and a movable section 822 arranged inside the fixing section 821; the movable section 822 is movably connected along the axial extension of the fixing section 821, and the free end of the fixing section 821 is also provided with a threaded section 823 and a second nut 824, the threaded section 823 passes through the fourth through hole 83 and is fixed by the second nut 824. The diameter of the threaded section 823 is smaller than the diameter of other parts, and it extends a distance through the fourth through hole 83 to facilitate the fixing of the second nut 824; the fixing section 821 is provided with a first limiting portion 825, the first limiting portion 825 is arranged at the rightmost end of the fixing section 821, the movable section 822 is provided with a second limiting portion 826, the second limiting portion 826 is arranged at the leftmost end of the movable section 822, when the movable section 822 extends to the rightmost end of the fixing section 821, the second limiting portion 826 is clamped at the first limiting portion 825, to prevent the movable section 822 from being completely withdrawn, affecting the test. That is, while the second support member 52 is extended and shortened, the movement of the movable section 822 in the fixed section 821 is limited, so as to more accurately achieve the longitudinal position requirement of the blasting assembly 11. At the same time, the blasting assembly 11 is connected to the free end of the movable section 822 by ropes of different lengths to achieve the vertical position requirement of the explosive. In a more preferred embodiment, corresponding scales can be set on the first fixed rod 81, the fixed section 821 and the movable section 822 to accurately control the relative position between the blasting assembly 11 and the assembly to be blasted 12. Of course, the relative position between the blasting assembly 11 and the assembly to be blasted 12 can also be accurately and intelligently controlled by setting corresponding sensors, such as position sensors.

[0042] In the present invention, the first support member 51, the second support member 52, the third support member 53, the fourth support member 61 and the fifth support member 62 are all hollow square columns. Figure 5 , Figure 5 The first support member 51 and the third support member 53 on the right side of the middle extend into the first support member 51 and the third support member 53 on the left side respectively, and the extent of the extension can be adjusted to meet the needs of components 11 to be blasted of different sizes.

[0043] A method of using a fixing device for a concrete slab explosion test in the present invention is as follows: The following steps are involved: Step 1: Rotate and release the mobile assembly 9, move the entire device to a suitable position at the explosion site, retract the mobile assembly 9, fix the entire device, and prepare for subsequent experiments.

[0044] Step 2: According to the specific test concrete slab length requirement, adjust the extension length of the second support member 52 on the right and the third support member 53 on the left by loosening the screw at the first through hole 54. Specifically, after extending until the component 12 to be blasted is just placed on the first clamping components 4 at both ends and there is a 2-3 cm longitudinal space margin at both ends, tighten the screw at the first through hole 54. This not only facilitates the fine adjustment of the component 12 to be blasted on the first clamping component 4, but also fully stabilizes the overall test device.

[0045] Step three: Use a lifting machine to place the component 12 to be blasted on the support grooves 41 at both ends, and make fine adjustments to place the component 12 to be blasted in the middle of the space to avoid covering the second through hole 44 and the third through hole 45, which would affect the fixation of the device. Place the pressing plate 42 on the adjusted upper part of the concrete slab and align the second through hole 44 and the third through hole 45 in the vertical space. A connecting screw 431 of sufficient length passes through the upper and lower circular holes, and cooperates with the washers and the first nut 432 to lock the upper and lower plates. It should be noted that the sufficiently long screw should be as short as possible on the upper part of the concrete, and the remaining length should extend out from the lower part of the concrete slab to prevent the explosion shock wave from damaging the upper part of the concrete slab and damaging the fixing 43.

[0046] Step 4: Arrange the instruments on the concrete slab to be tested according to the test plan test points. The first monitoring unit fixture 10 is welded to the middle of the first support 51. Whether it is structural displacement or acceleration, the lateral midline position of the slab is the key position test point. Fix the instrument on the first monitoring unit fixture 10, and connect the other end to the concrete slab.

[0047] Step 5: Adjust the position of the blasting assembly 11 according to the overall position of the assembly to be blasted 12. Whether the explosion test is a contact explosion or a non-contact explosion, the spatial position of the explosive is mostly just above the middle of the structure. Adjust the position of the movable section 822 to meet the test requirements. The blasting assembly 11 is suspended at the end of the movable section 822 by a rope, and the test at different explosion distances is achieved by changing the length of the explosive rope.

[0048] Step 6: After a set of explosion tests are completed, first loosen the test instrument connected to the concrete base plate, then loosen the first clamping component 4, replace the component to be blasted 12, that is, the concrete plate, adjust the length of the device according to the size of the plate, then clamp the structure, connect the test instrument, and hang the explosives to continue testing.

[0049] like Fig.18As shown, in a further preferred solution, the first clamping assembly 4 can be replaced by a second clamping unit 16, the second clamping unit 16 includes a detachable first clamping assembly 161 and a second clamping unit 162, the second clamping unit 162 can move in the vertical direction of the first clamping assembly 161; an elastic member 17 is provided on the first clamping assembly 161, close to the component to be blasted 12. The first clamping assembly 161 and the second clamping unit 162 can be fastened by bolts.

[0050] like Figures 19 to 21 As shown, the first clamping assembly 161 includes a first clamping portion 1611 and a second clamping portion 1612 which are vertically connected; a first elongated hole 1613 is provided on the first clamping portion 1611 along the vertical direction; a second elongated hole 1614 is provided on the second clamping portion 1612 along the horizontal direction; the second clamping unit 162 includes a third clamping portion 1621 and a fourth clamping portion 1622 which are vertically connected, and a third elongated hole 1623 is provided on the fourth clamping portion 1622 along the vertical direction; the first elongated hole 1613 is matched with the third elongated hole 1623.

[0051] Here, the first clamping assembly 161 can be a lower clamping plate, and the second clamping unit 162 can be an upper clamping plate. Both the upper and lower clamping plates are provided with leakage grooves at a certain distance, that is, corresponding long holes, which can effectively meet the bolt fixing positions of different concrete slab thicknesses.

[0052] In addition, the elastic member 17 can be mainly provided by an air spring air cushion, the material of which has certain elasticity and explosion resistance, can provide a strong vertical supporting force and has a certain ability to alleviate the explosion shock wave, thereby improving the safety of the device.

[0053] In addition, if Fig. 22 As shown, the blasting assembly fixing unit 8 may also include a first fixing rod 81 and a blasting assembly position adjustment unit 18; that is, the blasting assembly position adjustment unit 18 is used to replace the second fixing rod 82, and the blasting assembly position adjustment unit 18 includes a first adjustment section 181 and a second adjustment section 182 which are connected and arranged, the free end of the first adjustment section 181 is hingedly arranged with the first fixing rod 81, and the second adjustment section 182 can rotate around the connection between the first adjustment section 181 and the second adjustment section 182; the free end of the second adjustment section 182 is provided with two blasting assemblies 11, and here, a cross bar can be arranged at the free end of the second adjustment section 182, and the two blasting assemblies 11 are fixed on the cross bar. This structure can realize the precise control of the position of the blasting assembly 11.

[0054] Furthermore, if Figure 23-24As shown, a second monitoring unit fixing part 19 can be used to replace the first monitoring unit fixing part 10 in the present invention. The second monitoring unit fixing part 19 can be a rectangular tube, or can be composed of two angle steels, and a mounting groove 191 is set on the upper surface of the second monitoring unit fixing part 19. The detection unit body is fixed to the second monitoring unit fixing part 19 through the mounting groove 191, and the corresponding detection line can extend through the hollow part, which plays a positive role in protecting the detection unit and moving the detection unit position.

[0055] The present invention can effectively simulate the actual fixation and stress conditions of the concrete slabs at both ends in the building under the action of explosion loads, greatly improving the accuracy of the anti-explosion performance loading test of the concrete slabs fixed at both ends; at the same time, the invention mostly adopts hollow frames and installs auxiliary moving devices, which ensures a certain rigidity of the device while reducing the weight and facilitating transportation, thereby increasing the convenience of the test; in addition, the invention can be assembled and then fixed, which not only meets the needs of changes in the size of the concrete slabs, but also realizes the desire to place explosives at different distances, thereby improving test efficiency and reducing costs; in addition, the invention can ensure the effective fixation of the test instruments, making the test data more accurate, which is of great significance for promoting the orderly and effective conduct of experimental research.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixing device for concrete slab explosion test, characterized in that: It comprises a fixing seat (1), wherein the fixing seat (1) comprises a first supporting unit (2) and a second supporting unit (3) which are detachably arranged; The top ends of the first supporting unit (2) and the second supporting unit (3) are both provided with a second clamping unit (16); The fixing seat (1) is also provided with a monitoring unit and a blasting component fixing unit (8); The free end of the blasting assembly fixing unit (8) can be close to or away from the fixing seat (1); Lateral support members (13) are also provided on both sides of the first support unit (2) and the second support unit (3); The second clamping unit (16) comprises a detachable first clamping assembly (161) and a second clamping assembly (162), wherein the second clamping assembly (162) is movable in a vertical direction of the first clamping assembly (161); an elastic member (17) is provided on a side of the first clamping assembly (161) close to the assembly to be blasted (12).

2. A fixing device for concrete slab explosion test according to claim 1, characterized in that: The first support unit (2) and the second support unit (3) both comprise a first support assembly (5) and a second support assembly (6) which are vertically connected; the second clamping unit (16) is arranged at the free end of the second support assembly (6).

3. A fixing device for concrete slab explosion test according to claim 2, characterized in that: The first support assembly (5) comprises a first support member (51), and a second support member (52) and a third support member (53) which are both vertically connected to the first support member (51).

4. A fixing device for concrete slab explosion test according to claim 2, characterized in that: The second support assembly (6) comprises a fourth support member (61) and a fifth support member (62) which are arranged in parallel; the fourth support member (61) is vertically connected to the first support member (51) and the second support member (52); the fifth support member (62) is vertically connected to the first support member (51) and the third support member (53); a lateral support member (13) arranged on one side of the fourth support member (61) has one end connected to the fourth support member (61) and the other end connected to the first support member (51); a lateral support member (13) arranged on one side of the fifth support member (62) has one end connected to the fifth support member (62) and the other end connected to the first support member (51).

5. A fixing device for concrete slab explosion test according to claim 4, characterized in that: The included angle between the lateral support member (13) and the first support member (51) is 45° to 60°.

6. A fixing device for concrete slab explosion test according to claim 2, characterized in that: A first oblique support (71) and a second oblique support (72) are connected between the first support assembly (5) and the second support assembly (6).

7. A fixing device for concrete slab explosion test according to claim 1, characterized in that: The first clamping assembly (161) comprises a first clamping portion (1611) and a second clamping portion (1612) which are vertically connected; a first long hole (1613) is provided on the first clamping portion (1611) in a vertical direction; and a second long hole (1614) is provided on the second clamping portion (1612) in a horizontal direction. The second clamping assembly (162) comprises a third clamping portion (1621) and a fourth clamping portion (1622) which are vertically connected, and a third elongated hole (1623) is provided on the fourth clamping portion (1622) along the vertical direction; The first elongated hole (1613) and the third elongated hole (1623) are arranged in coordination.

8. A fixing device for concrete slab explosion test according to claim 1, characterized in that: The blasting assembly fixing unit (8) comprises a first fixing rod (81) and a second fixing rod (82) which are connected to each other; the first fixing rod (81) is fixedly connected to the fixing seat (1); the second fixing rod (82) comprises a fixing section (821) and a movable section (822) arranged inside the fixing section (821); the movable section (822) is movably connected along the axial direction of the fixing section (821).

9. A fixing device for concrete slab explosion test according to claim 1, characterized in that: The blasting assembly fixing unit (8) comprises a first fixing rod (81) and a blasting assembly position adjustment unit (18); The blasting assembly position adjustment unit (18) comprises a first adjustment section (181) and a second adjustment section (182) which are connected to each other, the free end of the first adjustment section (181) being hinged to the first fixing rod (81), and the second adjustment section (182) being rotatable around the connection between the first adjustment section (181) and the second adjustment section (182); Two blasting assemblies (11) are provided at the free end of the second adjustment section (182).

10. A fixing device for concrete slab explosion test according to claim 1, characterized in that: A plurality of anchor bolts (14) are also provided at the bottom of the fixing seat (1).

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