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CN-121994619-A - Totally-enclosed beam and plate dual-purpose clamped boundary explosion test box and installation method thereof

CN121994619ACN 121994619 ACN121994619 ACN 121994619ACN-121994619-A

Abstract

The invention relates to a totally-enclosed beam-slab dual-purpose clamped boundary explosion test box and an installation method thereof, wherein the test box comprises a bearing foundation, a supporting frame arranged on the bearing foundation, a sealing assembly and a mode adapting assembly; the support frame comprises a column unit, a beam unit and beam top stiffening ribs, the sealing assembly comprises a peripheral sealing piece, a top sealing piece and a side sealing piece, the mode adapting assembly comprises a plate mode adapting assembly and a beam mode adapting assembly, the plate mode adapting assembly comprises a concrete plate, a plate mode special long side cover plate, a plate mode special short side cover plate and a top back-shaped channel steel cover plate, and the beam mode adapting assembly comprises a concrete beam, a beam mode special long side cover plate, a beam mode special short side cover plate and a top back-shaped channel steel cover plate. Compared with the prior art, the invention realizes the flexible and efficient switching of the multifunctional integration and test modes, provides stable and reliable clamped boundary conditions, has good totally-enclosed protective performance, and ensures the test safety and reality.

Inventors

  • XIAO WEIFANG
  • JIN QILIANG
  • SUN SHUFAN
  • LIU ZICHAO
  • ZHAO XIANZHONG

Assignees

  • 同济大学

Dates

Publication Date
20260508
Application Date
20260212

Claims (10)

  1. 1. The full-closed beam-slab dual-purpose clamped boundary explosion test box is characterized by comprising a bearing foundation, a supporting frame arranged on the bearing foundation, a closing assembly and a mode adapting assembly; the bearing foundation is a horizontally arranged steel bottom plate (1) in a shape like a Chinese character 'Hui'; The support frame comprises a stand column unit, a beam unit and a beam top stiffening rib, wherein the stand column unit comprises an I-shaped steel long column (2) and an I-shaped steel short column (3), the bottom end of the stand column unit is welded with the back-shaped steel bottom plate (1), the beam unit comprises an I-shaped steel long beam (4) and an I-shaped steel short beam (5), two ends of the I-shaped steel long beam (4) are welded with the top end side surface of the I-shaped steel long column (2), the bottom surface of the I-shaped steel long beam (4) is welded with the top end side surface of the I-shaped steel short column (3), two ends of the I-shaped steel short beam (5) are welded with the top end side surface of the I-shaped steel long column (2), the beam top stiffening rib is a circle of closed stiffening steel plate (6) laid above the beam unit, and the stiffening steel plate (6) is respectively welded with the top surfaces of the I-shaped steel long beam (4) and the I-shaped steel short beam (5); The sealing assembly comprises a peripheral sealing piece, a top sealing piece and a side sealing piece, wherein the peripheral sealing piece is a steel coaming (7) coated on the periphery of the supporting frame, the bottom of the steel coaming (7) is welded with the steel bottom plate (1) in a shape like Chinese character 'Hui', side channel steel upright posts (13) with the bottom welded with the steel bottom plate (1) in a shape like Chinese character 'Hui' and the side welded with the steel coaming (7) are arranged along the periphery of the steel coaming (7), the top sealing piece is a steel cover plate (8) in a shape like Chinese character 'Hui' and covered above the steel coaming (7) and the stiffening steel plate (6), and the side sealing piece is a sealing plate (14) connected with the steel coaming (7); The beam mode adapting assembly comprises a concrete beam (20), a beam mode special long side cover plate (21), a beam mode special short side cover plate (22) and a beam mode matching assembly, wherein the beam mode adapting assembly comprises a concrete slab (9), a slab mode special long side cover plate (10), a slab mode special short side cover plate (11) and a top back-shaped channel steel cover plate (12), and mode switching of beam component and slab component explosion mechanical property test can be achieved through replacement assembly of the slab mode and the beam mode adapting assembly.
  2. 2. The totally-enclosed beam and slab dual-purpose clamped boundary explosion test box according to claim 1, wherein stiffening ribs are arranged at the end parts of the I-shaped steel long columns (2).
  3. 3. The full-closed beam-slab dual-purpose clamped boundary explosion test box is characterized in that stiffening ribs are arranged in the H-shaped steel long beam (4) and the H-shaped steel short beam (5), and stiffening ribs are arranged in the top U-shaped channel steel cover plate (12).
  4. 4. A fully enclosed beam and slab dual purpose clamped boundary explosion test chamber according to claim 1, wherein the lower portion of the enclosure plate (14) is provided with openings for electrical wires passing through the chamber interior.
  5. 5. The totally-enclosed beam and slab dual-purpose clamped boundary explosion test box according to claim 1, wherein holes for bolting are formed in the steel coaming (7), the back-shaped steel cover plate (8), the concrete slab (9), the slab mode special long-side cover plate (10), the slab mode special short-side cover plate (11), the side channel steel upright post (13), the beam mode special long-side cover plate (21), the beam mode special short-side cover plate (22) and the top back-shaped channel steel cover plate (12).
  6. 6. A method of installing a fully enclosed beam-slab dual-purpose clamped boundary explosion test chamber according to any one of claims 1 to 5, comprising the steps of: S1, constructing a foundation, horizontally placing and fixing a square steel bottom plate (1); s2, assembling a frame, namely welding and fixing a column unit on a back-shaped steel bottom plate (1), correspondingly welding a beam unit on the top end of the column unit to form a three-dimensional rigid frame, and finally welding a stiffening steel plate (6) above the beam unit; S3, installing a closed structure, installing a steel coaming (7) and a side channel steel upright post (13) and welding, installing a back-shaped steel cover plate (8) and welding, and finally installing a closed plate (14) through a second bolt (19); and S4, mode switching installation, namely selecting a plate mode or a beam mode for adaptive installation according to test requirements.
  7. 7. The method for installing a totally enclosed beam and slab dual-purpose clamped boundary explosion test box according to claim 6, wherein in S4, if the method is a slab mode installation method, the method comprises the following steps: Laying a concrete plate (9) on the steel cover plate (8) in a shape like a Chinese character 'Hui'; a long-side cover plate (10) special for the cover plate mode and a short-side cover plate (11) special for the plate mode are covered and fixed with the steel coaming (7) through bolts; The top U-shaped channel steel cover plate (12) is pressed, horizontally fixed through bolts sequentially penetrating through reserved holes of each component, and vertically fixed through the bolts and the side U-steel upright posts (13).
  8. 8. The method for installing the totally-enclosed beam-slab dual-purpose clamped boundary explosion test box is characterized in that when the box is installed in a slab mode, a long-side cover plate (10) special for the slab mode and a short-side cover plate (11) special for the slab mode are respectively fixed with a peripheral steel plate (7) through long-side cover plate bolts (16) and short-side cover plate bolts (15), top bolts (17) sequentially penetrate through reserved holes of components, the top back-shaped channel steel cover plate (12), the long-side cover plate (10) special for the slab mode or the short-side cover plate (11) special for the slab mode, a concrete slab (9) and the back-shaped steel cover plate (8) are horizontally fixed, and meanwhile the top back-shaped channel steel cover plate (12) is fixed with a side channel steel column (13) through first bolts (18) and reserved holes to achieve vertical fixation, so that the box installation is completed.
  9. 9. The method for installing a totally enclosed beam and slab dual-purpose clamped boundary explosion test box according to claim 6, wherein in S4, if the beam is installed in a mode, the method comprises the following steps: placing the concrete beam (20) on the steel cover plate (8) in a shape like a Chinese character 'Hui'; a long side cover plate (21) special for covering the beam mode and a short side cover plate (22) special for covering the beam mode are fixed with the steel coaming (7) through bolts; The top U-shaped channel steel cover plate (12) is pressed, horizontally fixed through bolts sequentially penetrating through reserved holes of each component, and vertically fixed through the bolts and the side U-steel upright posts (13).
  10. 10. The method for installing the totally-enclosed beam and slab dual-purpose clamped boundary explosion test box is characterized in that the method is installed in a beam mode, a long side cover plate (21) special for the beam mode and a short side cover plate (22) special for the beam mode are respectively fixed with a peripheral steel plate (7) through long side cover plate bolts (16) and short side cover plate bolts (15), top bolts (17) sequentially penetrate through reserved holes of components, horizontal fixing is conducted on a top back-shaped channel steel cover plate (12), the long side cover plate (21) special for the beam mode or the short side cover plate (22) special for the beam mode and the back-shaped steel cover plate (8), the back-shaped channel steel cover plate (12) is fixed with a side channel steel column (13) through first bolts (18) and reserved holes, vertical fixing is achieved, and beam mode installation is completed.

Description

Totally-enclosed beam and plate dual-purpose clamped boundary explosion test box and installation method thereof Technical Field The invention relates to the technical field of component performance test in the field of civil engineering and explosion mechanics intersection, in particular to a totally-enclosed beam-slab dual-purpose clamped boundary explosion test box and an installation method thereof. Background In the fields of civil engineering and national defense engineering, the research of the destructive effect of explosive load on structural members is an important foundation for guaranteeing engineering safety. The concrete beam and the concrete slab are used as core stress members in building structures, and the antiknock performance of the concrete beam and the concrete slab directly relates to antiknock safety of the whole structure, so that the development of targeted explosion tests is very important. The existing explosion test device has the defects that firstly, most of the test devices are of an open or semi-closed structure, explosion wave diffraction is easy to cause, test authenticity is interfered, a sensor which lacks effective protection is extremely easy to damage under explosion impact, secondly, the design of a clamped boundary is unreasonable, stability and consistency of boundary conditions in the test process are difficult to ensure, constraint accuracy is insufficient, test data errors are large, real antiknock performance of a component cannot be accurately reflected, thirdly, the function is single, most of the devices can only meet test requirements of a single component of a beam or a plate, when different types of component tests are required to be carried out, the test devices are required to be replaced, test cost and operation complexity are increased, fourthly, the rigidity of a support frame of part of the devices is insufficient, deformation is easy to occur under the action of explosion load, and test accuracy is further affected. CN202010418482.8 discloses an explosion test box capable of being used for researching antiknock performance of a plate member, comprising a hollow explosion box body with an opening at the top, wherein a simulation plate member is horizontally arranged at the detachable opening at the top of the explosion box body, member fixing mechanisms matched with the simulation plate member are detachably arranged at the left end and the right end of the top of the explosion box body, side baffles matched with the simulation plate member are detachably arranged at the front side and the rear side of the top of the explosion box body, and the top of the side baffles are flush with the top of the simulation plate member. The explosion test box provided by the invention forms single controllable boundary conditions at two ends of the simulated plate member, can reflect the real response of the plate member under the explosion load in the explosion simulation test of the plate member, has important significance for researching the antiknock performance of the plate member, and can be disassembled, so that the explosion test box is convenient to disassemble, assemble and transport and can be recycled. But the explosion test box lacks mode switching capability, has a narrow application range and is insufficient in solid support constraint. Aiming at the technical problems of single function, insufficient solidus and support constraint precision, explosion wave diffraction interference test authenticity and easiness in damage of a sensor, the development of an explosion test device which has a totally-enclosed protection function, can realize flexible switching of beam slab test modes, is stable and reliable in solidus and support boundary and has excellent structural rigidity is needed to meet the accurate, safe and efficient test demands. Disclosure of Invention The invention aims to overcome the defects of the prior art and provide the totally-enclosed beam-slab dual-purpose clamped boundary explosion test box and the installation method thereof, so that the flexible and efficient switching of the multifunctional integration and test modes is realized, stable and reliable clamped boundary conditions are provided, the totally-enclosed protective performance is good, the test safety and reality are ensured, the structural rigidity is strong, and the safety and durability are high. The aim of the invention can be achieved by the following technical scheme: The invention provides a totally-enclosed beam-slab dual-purpose clamped boundary explosion test box which comprises a bearing foundation, a supporting frame, a sealing assembly and a mode adapting assembly, wherein the supporting frame, the sealing assembly and the mode adapting assembly are arranged on the bearing foundation; the bearing foundation is a horizontally arranged steel bottom plate in a shape like a Chinese character 'Hui'; The support frame comprises a stand column unit, a beam unit and