Study on Lap-Slip Mechanics Model of Steel Bar and ECC
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    Abstract:

    Traditional lap-slip mechanics models have not taken into account the important factor of steel bar spacing, leading to inaccurate predictions of steel bar overlapping performance. To address this, a tensile test considering factors such as steel bar spacing was conducted, and the influence of spacing on overlapping performance was investigated. A mechanical model considering steel bar spacing was developed and validated for accuracy and generalization. The results demonstrate that the proposed model considering steel bar spacing improves accuracy by nearly 50% compared to traditional lap-slip models. For ECC-steel overlapping members, the correlation coefficient between the model and experimental results exceeds 0.95. The model shows good generalization, effectively predicting the overla-pping performance of steel bars in high-performance concrete and ordinary concrete, and is suitable for predicting the overlapping performance of reinforced concrete overlapping members.

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LI Muyuan, SUN Zhaopeng, CHEN Panxin, WU Qiong, SHENG Hao, GUO Jin. Study on Lap-Slip Mechanics Model of Steel Bar and ECC[J].,2024,41(3):23-31

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History
  • Received:July 15,2023
  • Revised:
  • Adopted:
  • Online: June 29,2024
  • Published: June 25,2024
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