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Volume 39 Issue 3
Mar 2025
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Chinese Journal of High Pressure Physics  > 2025  >  39(3): 034202.
LI Yishuo, WANG Wei, XU Zhaowei, ZHANG Congkun, ZHANG Zhonghao, ZHANG Qiang. Close-Range Blast Resistance and Analytical Methods of Polyurea Coated Masonry Infill Walls with Built-in Tie Reinforcement[J]. Chinese Journal of High Pressure Physics, 2025, 39(3): 034202. doi: 10.11858/gywlxb.20240892
Citation: LI Yishuo, WANG Wei, XU Zhaowei, ZHANG Congkun, ZHANG Zhonghao, ZHANG Qiang. Close-Range Blast Resistance and Analytical Methods of Polyurea Coated Masonry Infill Walls with Built-in Tie Reinforcement[J]. Chinese Journal of High Pressure Physics, 2025, 39(3): 034202. doi: 10.11858/gywlxb.20240892
shu

Close-Range Blast Resistance and Analytical Methods of Polyurea Coated Masonry Infill Walls with Built-in Tie Reinforcement

doi: 10.11858/gywlxb.20240892
  • 1.

    Key Laboratory of Impact and Safety Engineering, Ministry of Education, Ningbo University, Ningbo 315211, Zhejiang, China

  • 2.

    Shanghai Electro-Mechanical Engineering Institute, Shanghai 201109, China

  • Received Date: 23 Sep 2024
  • Rev Recd Date: 28 Oct 2024
  • Issue Publish Date: 05 Mar 2025
    Abstract
  • In order to investigate the dynamic response process, damage characteristics and damage mode of polyurea coated masonry infill walls with built-in tie reinforcement under close-range explosion load, a series of close-range explosion tests were performed on masonry wall with different polyurea coating methods and thicknesses. Additionally, numerical studies were carried out using the LS-DYNA software. Based on the resistance function of the brick wall, steel bar and polyurea coating, an improved equivalent single degree of freedom (ESDOF) theoretical calculation model was established. This model can accurately describe the displacement response of the polyurea coated masonry infill walls with built-in tie reinforcement under close-range explosion load. Three damage modes: surface mortar layer damage, open pit dislocation with back bulge, and penetration damage were identified according to the wall’s out-of-face response characteristics during close-range explosion load. With the increase of the number of tension reinforcement, the anti-explosion performance of the wall improves and the critical penetration damage charge increases.

     

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