Totally-enclosed beam-slab dual-purpose clamped boundary explosion test box and installation method thereof

Abstract

The invention relates to a totally-enclosed beam-slab dual-purpose clamped boundary explosion test box and a mounting method thereof. The test box comprises a bearing foundation, and a supporting frame, a sealing assembly and a mode adaptation assembly which are arranged on the bearing foundation, the supporting frame comprises a stand column unit, a cross beam unit and a beam top stiffening rib. The sealing assembly comprises a peripheral sealing piece, a top sealing piece and a side sealing piece; the mode adaptation assembly comprises a plate mode adaptation assembly and a beam mode adaptation assembly; the plate pattern adaptive assembly comprises a concrete plate, a plate pattern special long-edge cover plate, a plate pattern special short-edge cover plate and a top rectangular-ambulatory-plane channel steel cover plate; the beam mode adaptive assembly comprises a concrete beam, a long side cover plate special for the beam mode, a short side cover plate special for the beam mode and a top rectangular-ambulatory-plane channel steel cover plate. Compared with the prior art, flexible and efficient switching between multifunctional integration and test modes is achieved, stable and reliable clamped boundary conditions and good fully-closed protection performance are provided, and test safety and reality are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of component performance testing technology in the intersection of civil engineering and explosion mechanics, and in particular to a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber and its installation method. Background Technology

[0002] In the fields of civil engineering and defense engineering, the study of the destructive effects of explosive loads on structural components is a crucial foundation for ensuring engineering safety. Concrete beams and slabs, as core load-bearing components in building structures, have their blast resistance performance directly affecting the overall blast safety of the structure; therefore, conducting targeted blast tests is of paramount importance.

[0003] Existing explosion testing devices have several limitations: First, most devices are open or semi-closed structures, which can easily lead to blast wave diffraction, interfering with the authenticity of the test, and the sensors, lacking effective protection, are easily damaged under blast impact. Second, the design of the fixed support boundary is unreasonable, making it difficult to ensure the stability and consistency of the boundary conditions during the test, resulting in insufficient constraint precision and large errors in the test data, failing to accurately reflect the true blast resistance performance of the components. Third, they are functionally limited; most devices can only meet the testing needs of a single component such as a beam or slab. When different types of components need to be tested, the testing device must be replaced, increasing the testing cost and operational complexity. Fourth, the support frame of some devices is not rigid enough, making them prone to deformation under blast loads, further affecting the test accuracy.

[0004] CN202010418482.8 discloses an explosion test chamber for studying the blast resistance of plate components. It includes a hollow, top-opening explosion chamber body. A simulated plate component is detachably placed horizontally at the top opening of the explosion chamber body. The top left and right ends of the explosion chamber body are detachably equipped with component fixing mechanisms adapted to the simulated plate component. The front and rear sides of the top of the explosion chamber body are detachably equipped with side baffles adapted to the simulated plate component, with the top of the side baffles flush with the top of the simulated plate component. The explosion test chamber provided by this invention forms a single, controllable boundary condition at both ends of the simulated plate component. In explosion simulation tests of plate components, it can reflect the true response of the plate component under explosive loads, which is of great significance for the study of the blast resistance of plate components. Furthermore, the components of the explosion test chamber are detachable, making the explosion test chamber easy to disassemble, transport, and recycle. However, the explosion test chamber lacks mode switching capability, has a narrow application range, and insufficient fixed support constraints.

[0005] To address the aforementioned technical issues of limited functionality, insufficient precision of fixed support constraints, impact on the authenticity of explosion wave diffraction tests, and susceptibility to sensor damage, there is an urgent need to develop an explosion testing device that features fully enclosed protection, flexible switching between beam and slab test modes, stable and reliable fixed support boundaries, and excellent structural rigidity, in order to meet the requirements for accurate, safe, and efficient testing. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the existing technology by providing a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber and its installation method, realizing multi-functional integration and flexible and efficient switching of test modes, providing stable and reliable fixed-support boundary conditions, good fully enclosed protection performance, ensuring test safety and authenticity, strong structural rigidity, and high safety and durability.

[0007] The objective of this invention can be achieved through the following technical solutions: This invention provides a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber, including a load-bearing foundation and a support frame, a closed assembly, and a mode adaptation assembly disposed on the load-bearing foundation; The supporting foundation is a horizontally arranged U-shaped steel base plate; The supporting frame includes column units, beam units, and beam top stiffening ribs. Each column unit comprises a long I-beam and a short I-beam, with the bottom end welded to the U-shaped steel base plate. Each beam unit comprises a long I-beam and a short I-beam, with both ends of the long I-beam welded to the top side of the long I-beam, the bottom surface of the long I-beam welded to the top of the short I-beam, both ends of the short I-beam welded to the top side of the long I-beam, and the bottom surface of the short I-beam welded to the top of the short I-beam. The beam top stiffening ribs are a closed ring of stiffening steel plates laid above the beam units, and the stiffening steel plates are welded and fixed to the top surfaces of the long and short I-beams respectively. The enclosure assembly includes an outer enclosure, a top enclosure, and side enclosures. The outer enclosure is a steel plate covering the perimeter of the support frame. The bottom of the steel plate is welded to a U-shaped steel base plate, and side channel steel columns with their bottoms welded to the U-shaped steel base plate and their sides welded to the steel plate are provided around the perimeter of the steel plate. The top enclosure is a U-shaped steel cover plate covering the steel plate and the stiffening steel plate. The lower surface of the U-shaped steel cover plate is welded and fixed to the top of the steel plate and the top of the stiffening steel plate, respectively. The side enclosures are enclosure plates connected to the steel plate by second bolts and pre-drilled bolt holes. The mode adaptation components include a plate mode adaptation component and a beam mode adaptation component; the plate mode adaptation component includes a concrete slab, a long side cover plate for plate mode, a short side cover plate for plate mode, and a top U-shaped channel steel cover plate; the beam mode adaptation component includes a concrete beam, a long side cover plate for beam mode, a short side cover plate for beam mode, and a top U-shaped channel steel cover plate; by replacing and assembling the plate mode and beam mode adaptation components, the mode switching for explosive mechanical performance testing of beam components and plate components can be quickly realized.

[0008] Furthermore, the ends of the I-shaped steel column are provided with stiffening ribs.

[0009] Furthermore, the interior of the I-beam long crossbeam and the I-beam short crossbeam is provided with stiffening ribs.

[0010] Furthermore, the top U-shaped channel steel cover plate is provided with stiffening ribs inside.

[0011] Furthermore, the lower part of the sealing plate is provided with an opening for the passage of wires inside the test chamber.

[0012] Furthermore, the steel enclosure plate, the U-shaped steel cover plate, the concrete slab, the long side cover plate for slab pattern, the short side cover plate for slab pattern, the side channel steel column, the long side cover plate for beam pattern, the short side cover plate for beam pattern, and the top U-shaped channel steel cover plate are all provided with holes for bolt connection.

[0013] This invention also provides an installation method for a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber, comprising the following steps: S1: Foundation construction, placing and fixing the U-shaped steel base plate horizontally; serving as the installation benchmark and bottom load-bearing structure for the entire test chamber; S2: Frame assembly: Weld the column units to the U-shaped steel base plate, then weld the beam units to the top of the column units to form a three-dimensional rigid frame, and finally weld stiffening steel plates above the beam units. S3: For enclosed structure installation, install and weld the steel enclosure and side channel steel columns, then install and weld the U-shaped steel cover plate, and finally install the enclosure plate with the second bolt; S4: Mode switching installation. Select either plate mode or beam mode for installation according to test requirements.

[0014] Furthermore, in S4, if it is a board-mode installation, the following steps are included: The concrete slab was laid on the U-shaped steel cover plate; A long-side cover plate is specially designed for the cover plate pattern, and a short-side cover plate is specially designed for the plate pattern. They are fixed to the steel enclosure plate with bolts. The top U-shaped channel steel cover plate is pressed in, and horizontal fixation is achieved by bolts passing through the reserved holes of each component in sequence, and vertical fixation is achieved by bolts to the side channel steel columns.

[0015] Furthermore, during the plate-type installation, the dedicated long-side cover plate and the dedicated short-side cover plate are fixed to the outer steel plate using long-side cover plate bolts and short-side cover plate bolts, respectively; the top bolts pass through the pre-drilled holes in the components to horizontally fix the top U-shaped channel steel cover plate, the dedicated long-side cover plate or the dedicated short-side cover plate, the concrete slab, and the U-shaped steel cover plate; at the same time, the top U-shaped channel steel cover plate is fixed to the side channel steel column using the first bolt and the pre-drilled holes to achieve vertical fixation, thus completing the plate-type installation.

[0016] Furthermore, in S4, if the installation is in beam mode, the following steps are included: Place the concrete beam onto the U-shaped steel cover plate; The long side cover plate for the beam mode and the short side cover plate for the beam mode are fixed to the steel enclosure plate with bolts. The top U-shaped channel steel cover plate is pressed in, and horizontal fixation is achieved by bolts passing through the reserved holes of each component in sequence, and vertical fixation is achieved by bolts to the side channel steel columns.

[0017] Furthermore, for beam-mode installation, the special long-side cover plate and the special short-side cover plate for beam-mode are fixed to the outer steel plate respectively by long-side cover plate bolts and short-side cover plate bolts; the top bolts pass through the reserved holes in the component in sequence to horizontally fix the top U-shaped channel steel cover plate, the special long-side cover plate or the special short-side cover plate for beam-mode, and the U-shaped steel cover plate; the U-shaped channel steel cover plate is fixed to the side channel steel column by the first bolt and the reserved holes to achieve vertical fixation, thus completing the beam-mode installation.

[0018] Preferably, the U-shaped steel base plate, the I-shaped steel long column, the I-shaped steel short column, the I-shaped steel long crossbeam, the I-shaped steel short crossbeam, and the stiffening steel plate are made of Q345B steel.

[0019] Compared with the prior art, the present invention has the following advantages: (1) Achieving multi-functional integration and flexible and efficient switching of test modes. Traditional explosion test devices have limited functions, and the entire set of equipment needs to be replaced for testing different components such as beams or slabs, resulting in high costs and cumbersome operation. This invention achieves modularization of key components by setting up dedicated plate mode adapter components and beam mode adapter components, and sharing a common top U-shaped channel steel cover plate. When it is necessary to change the test mode, only the corresponding dedicated cover plate and test components need to be replaced, without disassembling or replacing the main support frame and closed structure. This improves the versatility and efficiency of the equipment and reduces the cost and storage space requirements caused by purchasing multiple sets of dedicated equipment.

[0020] (2) Providing stable and reliable fixed boundary conditions. The support frame is a three-dimensional rigid structure formed by welding I-shaped steel columns and I-shaped steel beams, and a ring of stiffening steel plates is welded above the top frame to form a strong load-bearing skeleton. Stiffening ribs are also provided inside the key components to further enhance the local stiffness. When installing the test components, the top bolts are used for horizontal fixation, and the top U-shaped channel steel cover plate is connected to the side channel steel columns by bolts to achieve vertical clamping fixation. This composite fixing method combining bolt connection and main body welding provides stable and reliable fixed boundary conditions for beam and slab components, effectively avoiding changes in the boundary conditions of the components under explosive impact, and improving the constraint accuracy and reliability of test data.

[0021] (3) Excellent fully enclosed protection performance ensures experimental safety and authenticity. Open or semi-enclosed test devices are susceptible to interference from blast wave diffraction and provide insufficient protection for sensors. This invention consists of a steel enclosure, a U-shaped steel cover, and a detachable sealing plate, forming a fully enclosed test space. This effectively constrains and guides the blast shock wave, preventing wavefront diffraction from interfering with the test process, ensuring the consistency of the test environment, and enabling the test results to accurately reflect the mechanical properties of the components. The fully enclosed structure provides safety protection for precision measuring instruments such as accelerometers and displacement gauges arranged inside the enclosure, reducing the risk of sensor damage due to direct exposure to blast products or high-speed debris, and ensuring the integrity of data acquisition.

[0022] (4) The structure is highly rigid, safe, and durable. The U-shaped steel base plate serves as the foundation for the entire device, providing a stable and level installation reference. The side channel steel columns not only participate in the formation of the enclosed structure but also enhance the impact resistance of the steel enclosure. All major load-bearing components are made of Q345B steel, and the connection strength is ensured through standardized welding processes.

[0023] (5) Improved testing efficiency and convenience. The detachable side closure facilitates personnel entry into the explosion chamber to install testing instruments and makes testing easier. Attached Figure Description

[0024] Figure 1 A schematic diagram of the overall structure of the plate mode and beam mode of the fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber; Figure 2 Exploded views of the plate and beam modes of the fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber; Figure 3 This is a top sectional view of a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber. Figure 4 A front sectional view of the plate mode of a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber; Figure 5 Left sectional view of the plate mode of the fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber; Figure 6 Front view sectional view of the beam mode of the fully enclosed beam-slab dual-purpose fixed-boundary explosion test chamber; Figure 7 Left sectional view of the beam mode of the fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber; Figure 8 Internal structural diagram of a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber; Figure 9 A schematic diagram of the top U-shaped channel steel cover plate; Figure 10 This is a structural schematic diagram of the side channel steel column; Figure 11 A schematic diagram of the structure of the cover plate in the plate mode; Figure 12 This is a structural schematic diagram of a beam-type cover plate.

[0025] Reference numerals: 1. U-shaped steel base plate; 2. I-shaped long steel column; 3. I-shaped short steel column; 4. I-shaped long crossbeam; 5. I-shaped short crossbeam; 6. Stiffening steel plate; 7. Steel enclosure plate; 8. U-shaped steel cover plate; 9. Concrete slab; 10. Long side cover plate for slab pattern; 11. Short side cover plate for slab pattern; 12. Top U-shaped channel steel cover plate; 13. Side channel steel column; 14. Enclosure plate; 15. Short side cover plate bolt; 16. Long side cover plate bolt; 17. Top bolt; 18. First bolt; 19. Second bolt; 20. Concrete beam; 21. Long side cover plate for beam pattern; 22. Short side cover plate for beam pattern. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0027] Example 1 This embodiment provides a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber, such as... Figure 1-12 As shown, it includes a load-bearing foundation and a support frame, a closed component, and a mode adaptation component disposed on the load-bearing foundation; The supporting foundation is a horizontally arranged U-shaped steel base plate 1; The supporting frame includes column units, beam units, and beam top stiffening ribs. Each column unit comprises four long I-beam columns 2 and five short I-beam columns 3, with the bottom end of each column unit welded to the U-shaped steel base plate 1. Each beam unit comprises two long I-beam beams 4 and two short I-beam beams 5. The two ends of each long I-beam beam 4 are welded to the top sides of the long I-beam columns 2, the bottom surface of each long I-beam beam 4 is welded to the top of the short I-beam columns 3, the two ends of each short I-beam beam 5 are welded to the top sides of the long I-beam columns 2, and the bottom surface of each short I-beam beam 5 is welded to the top of the short I-beam columns 3. The beam top stiffening ribs are a closed ring of stiffening steel plates 6 laid above the beam units, and the stiffening steel plates 6 are welded and fixed to the top surfaces of the long I-beam beams 4 and the short I-beam beams 5, respectively. The enclosure assembly includes an outer enclosure, a top enclosure, and side enclosures. The outer enclosure is a steel plate 7 covering the periphery of the support frame. The bottom of the steel plate 7 is welded to a U-shaped steel base plate 1, and eight side channel steel columns 13 are provided around the periphery of the steel plate 7, with their bottoms welded to the U-shaped steel base plate 1 and their sides welded to the steel plate 7. The top enclosure is a U-shaped steel cover plate 8 covering the steel plate 7 and the stiffening steel plate 6. The lower surface of the U-shaped steel cover plate 8 is welded and fixed to the top of the steel plate 7 and the top of the stiffening steel plate 6, respectively. The side enclosure is a closing plate 14 connected to the steel plate 7 by a second bolt 19 and a pre-drilled bolt hole. The mode adaptation components include a plate mode adaptation component and a beam mode adaptation component; the plate mode adaptation component includes a concrete slab 9, a plate mode-specific long side cover plate 10, a plate mode-specific short side cover plate 11, and a top U-shaped channel steel cover plate 12; the beam mode adaptation component includes a concrete beam 20, a beam mode-specific long side cover plate 21, a beam mode-specific short side cover plate 22, and a top U-shaped channel steel cover plate 12; by replacing and assembling the plate mode and beam mode adaptation components, the mode switching for explosive mechanical performance testing of beam components and plate components can be quickly realized.

[0028] In a specific embodiment, the end of the I-shaped steel column 2 is provided with stiffening ribs.

[0029] In a specific embodiment, the interior of the I-beam long crossbeam 4 and the I-beam short crossbeam 5 is provided with stiffening ribs.

[0030] In a specific embodiment, the top U-shaped channel steel cover plate 12 is provided with stiffening ribs inside.

[0031] In a specific embodiment, the lower part of the sealing plate 14 is provided with an opening for the wires inside the test chamber to pass through.

[0032] In a specific embodiment, the steel enclosure 7, the U-shaped steel cover plate 8, the concrete slab 9, the long side cover plate 10 for slab pattern, the short side cover plate 11 for slab pattern, the side channel steel column 13, the long side cover plate 21 for beam pattern, the short side cover plate 22 for beam pattern, and the top U-shaped channel steel cover plate 12 are all provided with holes for bolt connection.

[0033] This invention also provides an installation method for a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber, comprising the following steps: S1: Foundation construction, placing and fixing the U-shaped steel base plate 1 horizontally; serving as the installation benchmark and bottom load-bearing structure for the entire test chamber; S2: Frame assembly: The I-beam long column 2 and I-beam short column 3 are welded and fixed to the preset positions of the U-shaped steel base plate 1 to form a column support structure; at the top of the column support structure, the I-beam long crossbeam 4 and I-beam short crossbeam 5 are welded and fixed accordingly, wherein the two ends of the I-beam long crossbeam 4 and the I-beam short crossbeam 5 are welded to the top side of the I-beam long column 2, and the bottom surfaces are welded to the top of the I-beam short column 3 to form a crossbeam unit; through the above welding connection, the column unit and the crossbeam unit are enclosed to form a three-dimensional rigid frame structure; a reinforcing steel plate 6 is welded around the crossbeam unit enclosed by the I-beam long crossbeam 4 and the I-beam short crossbeam 5; S3: Enclosed structure installation: A steel enclosure 7 is wrapped around the column support structure, and the bottom of the steel enclosure 7 is welded and fixed to the U-shaped steel base plate 1; eight side channel steel columns 13 are welded around the steel enclosure 7, with the bottom of the side channel steel columns 13 welded to the U-shaped steel base plate 1 and the sides welded to the steel enclosure 7; the U-shaped steel cover plate 8 is placed on top of the steel enclosure 7 and the stiffening steel plate 6 and welded and fixed; the sealing plate 14 is fixed to the pre-reserved bolt holes of the steel enclosure 7 by the second bolt 19 to achieve detachable closure of the side; S4: Mode switching installation. Select either plate mode or beam mode for installation according to test requirements.

[0034] In a specific implementation, step S4, if it is a board-mode installation, includes the following steps: The concrete slab 9 is laid on the U-shaped steel cover plate 8; The long side cover plate 10 for the cover plate mode and the short side cover plate 11 for the plate mode are fixed to the steel enclosure plate 7 by bolts; The top U-shaped channel steel cover plate 12 is pressed in and horizontally fixed by bolts passing through the reserved holes of each component in sequence, and vertically fixed by bolts to the side channel steel column 13.

[0035] In a specific implementation, when installing in a plate-like configuration, the long side cover plate 10 and the short side cover plate 11 are fixed to the outer steel plate 7 by the long side cover plate bolts 16 and the short side cover plate bolts 15, respectively; the top bolts 17 pass through the pre-drilled holes in the components to horizontally fix the top U-shaped channel steel cover plate 12, the long side cover plate 10 or the short side cover plate 11, the concrete slab 9, and the U-shaped steel cover plate 8; at the same time, the top U-shaped channel steel cover plate 12 is fixed to the side channel steel column 13 by the first bolt 18 and the pre-drilled holes to achieve vertical fixation, thus completing the plate-like installation.

[0036] In a specific implementation, if the installation is in beam mode, step S4 includes the following steps: Place the concrete beam 20 on the U-shaped steel cover plate 8; The long side cover plate 21 for the beam mode and the short side cover plate 22 for the beam mode are fixed to the steel enclosure plate 7 by bolts. The top U-shaped channel steel cover plate 12 is pressed in and horizontally fixed by bolts passing through the reserved holes of each component in sequence, and vertically fixed by bolts to the side channel steel column 13.

[0037] In a specific implementation, when installing in beam mode, the long side cover plate 21 and the short side cover plate 22 of the beam mode are fixed to the outer steel plate 7 by the long side cover plate bolt 16 and the short side cover plate bolt 15, respectively; the top bolt 17 passes through the reserved holes in the component in sequence to horizontally fix the top U-shaped channel steel cover plate 12, the long side cover plate 21 of the beam mode or the short side cover plate 22 of the beam mode and the U-shaped steel cover plate 8; the U-shaped channel steel cover plate 12 is fixed to the side channel steel column 13 by the first bolt 18 and the reserved holes to achieve vertical fixation and complete the beam mode installation.

[0038] Example 2 This embodiment provides a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber, such as... Figure 1-12 As shown, it includes a load-bearing foundation and a support frame, a closed component, and a mode adaptation component disposed on the load-bearing foundation; The supporting foundation is a horizontally arranged U-shaped steel base plate 1; The supporting frame includes column units, beam units, and beam top stiffening ribs. Each column unit comprises four long I-beam columns 2 and five short I-beam columns 3, with the bottom end of each column unit welded to the U-shaped steel base plate 1. Each beam unit comprises two long I-beam beams 4 and two short I-beam beams 5. The two ends of each long I-beam beam 4 are welded to the top sides of the long I-beam columns 2, the bottom surface of each long I-beam beam 4 is welded to the top of the short I-beam columns 3, the two ends of each short I-beam beam 5 are welded to the top sides of the long I-beam columns 2, and the bottom surface of each short I-beam beam 5 is welded to the top of the short I-beam columns 3. The beam top stiffening ribs are a closed ring of stiffening steel plates 6 laid above the beam units, and the stiffening steel plates 6 are welded and fixed to the top surfaces of the long I-beam beams 4 and the short I-beam beams 5, respectively. The enclosure assembly includes an outer enclosure, a top enclosure, and side enclosures. The outer enclosure is a steel plate 7 covering the periphery of the support frame. The bottom of the steel plate 7 is welded to a U-shaped steel base plate 1, and eight side channel steel columns 13 are provided around the periphery of the steel plate 7, with their bottoms welded to the U-shaped steel base plate 1 and their sides welded to the steel plate 7. The top enclosure is a U-shaped steel cover plate 8 covering the steel plate 7 and the stiffening steel plate 6. The lower surface of the U-shaped steel cover plate 8 is welded and fixed to the top of the steel plate 7 and the top of the stiffening steel plate 6, respectively. The side enclosure is a closing plate 14 connected to the steel plate 7 by a second bolt 19 and a pre-drilled bolt hole. The mode adaptation components include a plate mode adaptation component and a beam mode adaptation component; the plate mode adaptation component includes a concrete slab 9, a plate mode-specific long side cover plate 10, a plate mode-specific short side cover plate 11, and a top U-shaped channel steel cover plate 12; the beam mode adaptation component includes a concrete beam 20, a beam mode-specific long side cover plate 21, a beam mode-specific short side cover plate 22, and a top U-shaped channel steel cover plate 12; by replacing and assembling the plate mode and beam mode adaptation components, the mode switching for explosive mechanical performance testing of beam components and plate components can be quickly realized.

[0039] In a specific embodiment, the end of the I-shaped steel column 2 is provided with stiffening ribs.

[0040] In a specific embodiment, the interior of the I-beam long crossbeam 4 and the I-beam short crossbeam 5 is provided with stiffening ribs.

[0041] In a specific embodiment, the top U-shaped channel steel cover plate 12 is provided with stiffening ribs inside.

[0042] In a specific embodiment, the lower part of the sealing plate 14 is provided with an opening for the wires inside the test chamber to pass through.

[0043] In a specific embodiment, the steel enclosure 7, the U-shaped steel cover plate 8, the concrete slab 9, the long side cover plate 10 for slab pattern, the short side cover plate 11 for slab pattern, the side channel steel column 13, the long side cover plate 21 for beam pattern, the short side cover plate 22 for beam pattern, and the top U-shaped channel steel cover plate 12 are all provided with holes for bolt connection.

[0044] This invention also provides an installation method for a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber, comprising the following steps: S1: Foundation Construction. The U-shaped steel base plate 1 is placed horizontally and fixed; it serves as the installation benchmark and bottom load-bearing structure for the entire test chamber. In this specific implementation, the load-bearing foundation is made of Q345B steel, with a thickness determined based on the maximum test load (preferably 6-10mm). The inner frame dimensions of the U-shaped steel base plate 1 must match the arrangement of the supporting frame columns, and the outer frame dimensions must be 50-100mm larger than the outer dimensions of the enclosed components to ensure bottom sealing and stability. S2: Frame assembly: The I-beam long column 2 and I-beam short column 3 are welded and fixed to the preset positions of the U-shaped steel base plate 1 to form a column support structure; at the top of the column support structure, the I-beam long crossbeam 4 and I-beam short crossbeam 5 are welded and fixed accordingly, wherein the two ends of the I-beam long crossbeam 4 and the I-beam short crossbeam 5 are welded to the top side of the I-beam long column 2, and the bottom surfaces are welded to the top of the I-beam short column 3 to form a crossbeam unit; through the above welding connection, the column unit and the crossbeam unit are enclosed to form a three-dimensional rigid frame structure; a reinforcing steel plate 6 is welded around the crossbeam unit enclosed by the I-beam long crossbeam 4 and the I-beam short crossbeam 5; In the specific implementation, all steel components of the supporting frame are made of Q345B steel, and E50 series welding rods are used for welding. Before welding, rust, oil and other contaminants in the steel to be welded area are thoroughly removed by mechanical or chemical means to ensure that the metal luster is exposed. Then, bevel welding is uniformly performed at the joint between the bottom of the column and the U-shaped steel base plate 1. The effective height of the weld is not less than 0.8 times the thickness of the base material, and it is continuous, full, without cracks or slag inclusions. When welding the crossbeam, a stiffening rib (10mm thick) is pre-welded and fixed at 150mm intervals along the length of the crossbeam. The stiffening rib is connected to the crossbeam flange and web by fillet weld to ensure the crossbeam's resistance to bending deformation. After the stiffening steel plate 6 (10mm thick) is adjusted in position, it is fully welded to the top surface of the crossbeam and fixed. The weld is continuous and full without any incomplete welds. S3: Enclosed structure installation: A steel enclosure 7 is wrapped around the column support structure, and the bottom of the steel enclosure 7 is welded and fixed to the U-shaped steel base plate 1; eight side channel steel columns 13 are welded around the steel enclosure 7, with the bottom of the side channel steel columns 13 welded to the U-shaped steel base plate 1 and the sides welded to the steel enclosure 7; the U-shaped steel cover plate 8 is placed on top of the steel enclosure 7 and the stiffening steel plate 6 and welded and fixed; the sealing plate 14 is fixed to the pre-reserved bolt holes of the steel enclosure 7 by the second bolt 19 to achieve detachable closure of the side; The outer enclosure is a steel plate 7 (6mm thick, Q345B material), which covers the outer perimeter of the support frame. The bottom is fixed to the U-shaped steel base plate 1 by bevel welding, and the weld seam needs to be rust-proofed. The top enclosure is a U-shaped steel cover plate 8 (6mm thick, Q345B material), and the outer frame dimensions of the U-shaped steel cover plate 8 are consistent with the outer perimeter dimensions of the steel plate 7. The side enclosure is a sealing plate 14 (6mm thick, Q345B material), which is connected by M12 ordinary bolts according to the bolt holes reserved on the steel plate 7. Flat washers are set at the bolt connection to ensure a tight connection, realizing the detachable enclosure of the side, which facilitates the installation of the accelerometer and displacement gauge in the housing. S4: Mode switching installation. Select either plate mode or beam mode for installation according to test requirements.

[0045] In a specific implementation, step S4, if it is a board-mode installation, includes the following steps: The concrete slab 9 is laid on the U-shaped steel cover plate 8; The long side cover plate 10 for the cover plate mode and the short side cover plate 11 for the plate mode are fixed to the steel enclosure plate 7 by bolts; The top U-shaped channel steel cover plate 12 is pressed in and horizontally fixed by bolts passing through the reserved holes of each component in sequence, and vertically fixed by bolts to the side channel steel column 13.

[0046] In a specific implementation, when installing in a plate-like configuration, the long side cover plate 10 and the short side cover plate 11 are fixed to the outer steel plate 7 by the long side cover plate bolts 16 and the short side cover plate bolts 15, respectively; the top bolts 17 pass through the pre-drilled holes in the components to horizontally fix the top U-shaped channel steel cover plate 12, the long side cover plate 10 or the short side cover plate 11, the concrete slab 9, and the U-shaped steel cover plate 8; at the same time, the top U-shaped channel steel cover plate 12 is fixed to the side channel steel column 13 by the first bolt 18 and the pre-drilled holes to achieve vertical fixation, thus completing the plate-like installation.

[0047] In a specific implementation, if the installation is in beam mode, step S4 includes the following steps: Place the concrete beam 20 on the U-shaped steel cover plate 8; The long side cover plate 21 for the beam mode and the short side cover plate 22 for the beam mode are fixed to the steel enclosure plate 7 by bolts. The top U-shaped channel steel cover plate 12 is pressed in and horizontally fixed by bolts passing through the reserved holes of each component in sequence, and vertically fixed by bolts to the side channel steel column 13.

[0048] In a specific implementation, when installing in beam mode, the long side cover plate 21 and the short side cover plate 22 of the beam mode are fixed to the outer steel plate 7 by the long side cover plate bolt 16 and the short side cover plate bolt 15, respectively; the top bolt 17 passes through the reserved holes in the component in sequence to horizontally fix the top U-shaped channel steel cover plate 12, the long side cover plate 21 of the beam mode or the short side cover plate 22 of the beam mode and the U-shaped steel cover plate 8; the U-shaped channel steel cover plate 12 is fixed to the side channel steel column 13 by the first bolt 18 and the reserved holes to achieve vertical fixation and complete the beam mode installation.

[0049] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0050] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber, characterized in that, Includes a load-bearing foundation and a support frame, enclosure components, and mode adaptation components disposed on the load-bearing foundation; The bearing foundation is a horizontally arranged U-shaped steel base plate (1); The supporting frame includes column units, beam units, and beam top stiffening ribs; the column unit includes a long I-beam column (2) and a short I-beam column (3), the bottom end of the column unit is welded to the U-shaped steel base plate (1); the beam unit includes a long I-beam beam (4) and a short I-beam beam (5), the two ends of the long I-beam beam (4) are welded to the top side of the long I-beam column (2), and the bottom of the long I-beam beam (4) is... The top surface of the I-beam is welded to the top of the short I-beam column (3), and the two ends of the short I-beam beam (5) are welded to the top side of the long I-beam column (2). The bottom surface of the short I-beam beam (5) is welded to the top of the short I-beam column (3). The stiffening rib on the top of the beam is a closed stiffening steel plate (6) laid above the beam unit. The stiffening steel plate (6) is welded and fixed to the top surface of the long I-beam beam (4) and the short I-beam beam (5). The enclosure assembly includes an outer enclosure, a top enclosure, and a side enclosure; the outer enclosure is a steel plate (7) covering the periphery of the support frame, the bottom of the steel plate (7) is welded to the U-shaped steel base plate (1), and side channel steel columns (13) are provided around the steel plate (7) with the bottom welded to the U-shaped steel base plate (1) and the sides welded to the steel plate (7); the top enclosure is a U-shaped steel cover plate (8) covering the steel plate (7) and the stiffening steel plate (6); the side enclosure is a closing plate (14) connected to the steel plate (7). The mode adaptation components include a plate mode adaptation component and a beam mode adaptation component; the plate mode adaptation component includes a concrete slab (9), a plate mode-specific long side cover plate (10), a plate mode-specific short side cover plate (11), and a top U-shaped channel steel cover plate (12); the beam mode adaptation component includes a concrete beam (20), a beam mode-specific long side cover plate (21), a beam mode-specific short side cover plate (22), and a top U-shaped channel steel cover plate (12); by replacing and assembling the plate mode and beam mode adaptation components, the mode switching of the explosive mechanical performance test of beam components and plate components can be realized.

2. The fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 1, characterized in that, The end of the I-shaped steel column (2) is provided with stiffening ribs.

3. The fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 1, characterized in that, The internal parts of the I-beam long crossbeam (4) and the I-beam short crossbeam (5) are provided with stiffening ribs; the internal parts of the top U-shaped channel steel cover plate (12) are provided with stiffening ribs.

4. The fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 1, characterized in that, The lower part of the sealing plate (14) is provided with an opening for the wires inside the test chamber to pass through.

5. The fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 1, characterized in that, Holes for bolt connections are provided on the steel enclosure (7), the U-shaped steel cover plate (8), the concrete slab (9), the long side cover plate (10) for slab pattern, the short side cover plate (11) for slab pattern, the side channel steel column (13), the long side cover plate (21) for beam pattern, the short side cover plate (22) for beam pattern, and the top U-shaped channel steel cover plate (12).

6. A method for installing a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: Basic setup, place and fix the U-shaped steel base plate (1) horizontally; S2: Frame assembly, the column unit is welded and fixed to the U-shaped steel base plate (1), and the beam unit is welded to the top of the column unit to form a three-dimensional rigid frame. Finally, stiffening steel plate (6) is welded above the beam unit. S3: For the enclosed structure installation, install the steel enclosure (7) and the side channel steel column (13) and weld them together. Then install the U-shaped steel cover plate (8) and weld it together. Finally, install the enclosed plate (14) with the second bolt (19). S4: Mode switching installation. Select either plate mode or beam mode for installation according to test requirements.

7. The installation method of a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 6, characterized in that, In S4, if it is installed in board mode, the following steps are included: The concrete slab (9) is laid on the U-shaped steel cover plate (8); The long side cover plate (10) for the cover plate pattern and the short side cover plate (11) for the plate pattern are fixed to the steel enclosure plate (7) by bolts; The top U-shaped channel steel cover plate (12) is pressed in, and horizontal fixation is achieved by passing bolts through the reserved holes of each component in sequence, and vertical fixation is achieved by fixing it to the side channel steel column (13) with bolts.

8. The installation method of a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 7, characterized in that, When installing in plate mode, the long side cover plate (10) and the short side cover plate (11) are fixed to the outer steel plate (7) by the long side cover plate bolt (16) and the short side cover plate bolt (15), respectively; the top bolt (17) passes through the reserved holes of the component in sequence to fix the top U-shaped channel steel cover plate (12), the long side cover plate (10) or the short side cover plate (11), the concrete slab (9), and the U-shaped steel cover plate (8) horizontally; at the same time, the top U-shaped channel steel cover plate (12) is fixed to the side channel steel column (13) by the first bolt (18) and the reserved hole to achieve vertical fixation and complete the plate mode installation.

9. The installation method of a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 6, characterized in that, In S4, if the installation is in beam mode, the following steps are included: Place the concrete beam (20) on the U-shaped steel cover plate (8); The long side cover plate (21) for the beam mode and the short side cover plate (22) for the beam mode are fixed to the steel enclosure plate (7) by bolts; The top U-shaped channel steel cover plate (12) is pressed in, and horizontal fixation is achieved by passing bolts through the reserved holes of each component in sequence, and vertical fixation is achieved by fixing it to the side channel steel column (13) with bolts.

10. The installation method of a fully enclosed beam-slab dual-purpose fixed-support boundary explosion test chamber according to claim 9, characterized in that, When installing in beam mode, the long side cover plate (21) and the short side cover plate (22) of beam mode are fixed to the outer steel plate (7) by the long side cover plate bolt (16) and the short side cover plate bolt (15), respectively; the top bolt (17) passes through the reserved holes of the component in sequence to fix the top U-shaped channel steel cover plate (12), the long side cover plate (21) of beam mode or the short side cover plate (22) of beam mode and the U-shaped steel cover plate (8) horizontally; the U-shaped channel steel cover plate (12) is fixed to the side channel steel column (13) by the first bolt (18) and the reserved hole to achieve vertical fixation and complete the beam mode installation.

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