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CN-122013926-A - Honeycomb steel tube restrained block stone concrete bullet shielding structure and preparation method thereof

CN122013926ACN 122013926 ACN122013926 ACN 122013926ACN-122013926-A

Abstract

The invention provides a honeycomb steel tube restrained block stone concrete bullet shielding structure and a preparation method thereof, wherein the structure comprises a honeycomb steel tube structure and block stone concrete filled in the honeycomb steel tube structure; the honeycomb steel pipe structure comprises a plurality of pipe body structural units, an outer frame steel plate and an internal additional steel plate, wherein the pipe body structural units are formed by integrally forming the steel plate, two ends of the steel plate are inwards bent to form folded edges with the inner angle of 120 degrees, the lengths of the two folded edges are consistent with the lengths of the steel plate body sections between the two folded edges, the pipe body structural units are spliced and enclosed with other pipe body structural units with the same specification to form a regular hexagon, the pipe body structural units are mutually spliced and enclosed to form a plurality of regular hexagon unit cells, the outer frame steel plate and the internal additional steel plate are welded into a whole to jointly form the honeycomb steel pipe structure, and the block stone concrete comprises block stone aggregate and cement-based materials. The structure has excellent penetration resistance and strong multiple/repeated striking resistance.

Inventors

  • TAN QINGHUA
  • LU SHUZHI
  • REN RUIXIN
  • YE LINFENG

Assignees

  • 广西大学

Dates

Publication Date
20260512
Application Date
20260310

Claims (10)

  1. 1. The honeycomb steel tube restrained block stone concrete bullet shielding structure is characterized by comprising a honeycomb steel tube structure and block stone concrete filled in the honeycomb steel tube structure; The honeycomb steel pipe structure comprises a plurality of pipe body structural units, an outer frame steel plate and an inner additional steel plate; The pipe body structure unit is formed by integrally forming a steel plate, two ends of the steel plate are inwards bent to form folded edges with the inner angle of 120 degrees, the lengths of the two folded edges are consistent with the length of a steel plate body section between the two folded edges, and the pipe body structure unit is spliced and enclosed with other pipe body structure units with the same specification to form a regular hexagon; The pipe body structural units are mutually spliced and enclosed to form a plurality of regular hexagon unit cells, and the regular hexagon unit cells, the outer frame steel plates and the internal additional steel plates are welded into a whole to jointly form a honeycomb steel pipe structure; the rock block concrete includes a rock block aggregate and a cement-based material.
  2. 2. The honeycomb steel tube restrained rock concrete bullet structure of claim 1, wherein said rock aggregate is granite, basalt, quartz or corundum rock, and uniaxial compressive strength is not less than 100 MPa.
  3. 3. A honeycomb steel tube-restrained stone concrete bullet structure according to claim 1 wherein said stone aggregate is pre-randomly stacked in regular hexagonal cells.
  4. 4. A honeycomb steel tube-confined rock concrete bullet structure of claim 1 wherein the minimum size of said rock aggregate is not less than 1.5 times the diameter of the penetrating bullet body.
  5. 5. The honeycomb steel tube confined block stone concrete bullet structure of claim 1, wherein the ratio of the side length of the regular hexagonal unit cells to the diameter of the penetration bullet is 15-25.
  6. 6. The honeycomb steel tube restrained stone concrete bullet shielding structure according to claim 1, wherein the outer frame steel plate is formed by welding two L-shaped steel plates, the side length of the L-shaped steel plates is matched with the side length of the outer profile of the honeycomb steel tube structure, and the thickness of the L-shaped steel plates is consistent with the thickness of the steel plates.
  7. 7. The honeycomb steel tube confined rock concrete shielding structure of claim 1, wherein the honeycomb steel tube structure is made of carbon structural steel, alloy structural steel or stainless steel.
  8. 8. The method for preparing the honeycomb steel tube confined rock concrete bullet structure according to any one of claims 1 to 7, which is characterized by comprising the following steps: Firstly, selecting a steel plate meeting the design strength requirement, and cutting the steel plate into a plate according to the design size; bending two ends of a plate material into a pipe body structural unit with an internal angle of 120 degrees; Step three, steel materials with the length and the width matched with the overall contour side length of the internal honeycomb structure are used for processing the steel materials into L-shaped steel plates; Welding and assembling a plurality of standardized pipe body structural units with two L-shaped steel plates and an internal additional steel plate to form an integral honeycomb structure; Piling up stone aggregate in the cavity of the steel pipe after the assembly and welding of the integral honeycomb frame are completed; and step six, performing later maintenance work.
  9. 9. The method according to claim 8, wherein in the second step, both ends of the steel plate are bent into standardized tube body structural units having an internal angle of 120 ° by using a numerical control bending machine.
  10. 10. The method for preparing the cement-based material according to claim 8, wherein in the fifth step, cement-based material is injected into the cavity of the steel pipe under high pressure, specifically, temporary closed bearing systems are established at two ends of the steel pipe, flanges with valves are installed at the upper end and the lower end of the steel pipe respectively, grouting holes are additionally formed in the flanges at the lower end, an exhaust valve is opened at the initial stage of pouring, air in the exhaust pipe is discharged, grouting is started from a grouting opening at the bottom of the steel pipe after the air is discharged, and when cement-based material stably flows out from the exhaust port and is consistent with the characteristics of the pumped cement-based material, the exhaust valve is closed, grouting is stopped, and the temporary flange device is removed.

Description

Honeycomb steel tube restrained block stone concrete bullet shielding structure and preparation method thereof Technical Field The invention relates to the technical field of building protection structures, in particular to a honeycomb steel tube constraint block stone concrete bullet shielding structure and a preparation method thereof. Background Under the high-speed penetration impact action, the traditional plain concrete or reinforced concrete protective structure is easy to generate typical damages such as earthquake collapse, pit opening, integral brittle fracture, penetration and the like, so that the integral protective performance is seriously attenuated, and the protective efficiency is not ideal. The steel pipe restrained concrete mainly depends on three-way restraint of the steel pipe to the core concrete to improve the strength, ductility and toughness of the concrete, so that the overall penetration resistance is improved, but the improvement effect is limited. Therefore, there is an urgent need for a new structure that combines penetration resistance, multiple hits resistance, induced yaw of the projectile, and is suitable for protection of large caliber weapons. Disclosure of Invention In order to solve the technical problems in the prior art, the invention provides a honeycomb steel tube confined block stone concrete bullet shielding structure and a preparation method thereof, and the structure is a protective structure with excellent penetration resistance, strong multiple/repeated striking resistance, abrasion warhead and bullet yaw induction function, and has the comprehensive advantages of simple construction, good economy and the like. The protection mechanism of the honeycomb steel pipe restraining block stone concrete bullet shielding structure provided by the invention is a multiple restraining effect, block stone abrasion energy consumption and yaw mechanism, and is specifically embodied in the restraining effect of the steel pipe on concrete, the synergistic effect among units of the structure, and the abrasion and yaw induction of block stones on a bullet body. In order to achieve the above purpose, the invention provides a honeycomb steel tube restraining block stone concrete bullet shielding structure, which comprises a honeycomb steel tube structure and block stone concrete filled in the honeycomb steel tube structure; The honeycomb steel pipe structure comprises a plurality of pipe body structural units, an outer frame steel plate and an inner additional steel plate; The pipe body structure unit is formed by integrally forming a steel plate, two ends of the steel plate are inwards bent to form folded edges with the inner angle of 120 degrees, the lengths of the two folded edges are consistent with the length of a steel plate body section between the two folded edges, and the pipe body structure unit is spliced and enclosed with other pipe body structure units with the same specification to form a regular hexagon; The pipe body structural units are mutually spliced and enclosed to form a plurality of regular hexagon unit cells, and the regular hexagon unit cells, the outer frame steel plates and the internal additional steel plates are welded into a whole to jointly form a honeycomb steel pipe structure; the rock block concrete includes a rock block aggregate and a cement-based material. Further, the aggregate of the block stone is granite, basalt, quartz rock or corundum block stone, and the uniaxial compressive strength is not lower than 100 MPa. Further, the aggregate of the block stones is randomly stacked in the regular hexagonal unit cells in advance. Further, the minimum size of the aggregate is not less than 1.5 times the diameter of the penetrating elastomer. Further, the ratio of the side length of the regular hexagonal unit cell to the diameter of the penetration elastomer is 15-25. Further, the outer frame steel plate is formed by welding two L-shaped steel plates, the side length of the L-shaped steel plates is matched with the side length of the outer contour of the honeycomb steel pipe structure, and the thickness of the L-shaped steel plates is consistent with the thickness of the steel plates. Further, the honeycomb steel pipe structure is made of carbon structural steel, alloy structural steel or stainless steel. The invention also provides a preparation method of the honeycomb steel tube restrained block stone concrete bullet structure, which comprises the following steps: Firstly, selecting a steel plate meeting the design strength requirement, and cutting the steel plate into a plate according to the design size; bending two ends of a plate material into a pipe body structural unit with an internal angle of 120 degrees; Step three, steel materials with the length and the width matched with the overall contour side length of the internal honeycomb structure are used for processing the steel materials into L-shaped steel plates; Welding and assembling a plu