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<p>Engineered cementitious composites (ECC) are highly ductile materials with excellent crack control capabilities, making them well-suited for structural applications requiring enhanced durability and resilience. In mountainous engineering construction, stabilizing high-steep slopes presents a significant challenge, with sheet-pile walls commonly employed to improve seismic stability. To assess the effectiveness of ECC in such applications, this study conducted two comparative shaking table tests to investigate the seismic performance of high-steep slopes supported by ECC sheet-pile walls. The failure modes, acceleration responses, dynamic earth pressure responses, bending moments of anti-sliding piles, and lateral displacement responses of the ECC-supported slope were systematically analyzed and compared with those of slopes supported by traditional reinforced concrete (RC) sheet-pile walls. The test results indicate that ECC-supported slopes exhibited significantly better seismic performance than RC-supported slopes. ECC sheet-pile wall maintained structural integrity at higher seismic intensities (PGA = 1.2<i>g</i>) compared with RC walls, which failed at PGA = 1.0<i>g</i>. Under the same seismic loading, ECC-supported slopes demonstrated lower acceleration amplitudes, acceleration amplification factors, acceleration response spectra, and dynamic amplification factors compared with RC-supported slopes. Moreover, the dynamic bending moments of ECC anti-slide piles were approximately 70%–90% of those of RC anti-slide piles. Significant differences were also observed between the two support systems in terms of dynamic earth pressure distribution and residual displacement development. These findings confirmed the potential of ECC as an advanced material for enhancing high-steep slope stability in mountainous regions, providing a valuable reference for slope stabilization and landslide mitigation in seismic areas.</p>

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Shaking table test on seismic response of high-steep slope supported by ECC sheet-pile wall

  • 期刊论文

  • 发表日期：

    2025年9月24日

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  • Deliang Ma,
  • Xuanming Ding,
  • Hanlong Liu,
  • Chunyan Wang,
  • Jianlin Shen,
  • Weiting Deng,
  • Qiang Ou

摘要

Engineered cementitious composites (ECC) are highly ductile materials with excellent crack control capabilities, making them well-suited for structural applications requiring enhanced durability and resilience. In mountainous engineering construction, stabilizing high-steep slopes presents a significant challenge, with sheet-pile walls commonly employed to improve seismic stability. To assess the effectiveness of ECC in such applications, this study conducted two comparative shaking table tests to investigate the seismic performance of high-steep slopes supported by ECC sheet-pile walls. The failure modes, acceleration responses, dynamic earth pressure responses, bending moments of anti-sliding piles, and lateral displacement responses of the ECC-supported slope were systematically analyzed and compared with those of slopes supported by traditional reinforced concrete (RC) sheet-pile walls. The test results indicate that ECC-supported slopes exhibited significantly better seismic performance than RC-supported slopes. ECC sheet-pile wall maintained structural integrity at higher seismic intensities (PGA = 1.2g) compared with RC walls, which failed at PGA = 1.0g. Under the same seismic loading, ECC-supported slopes demonstrated lower acceleration amplitudes, acceleration amplification factors, acceleration response spectra, and dynamic amplification factors compared with RC-supported slopes. Moreover, the dynamic bending moments of ECC anti-slide piles were approximately 70%–90% of those of RC anti-slide piles. Significant differences were also observed between the two support systems in terms of dynamic earth pressure distribution and residual displacement development. These findings confirmed the potential of ECC as an advanced material for enhancing high-steep slope stability in mountainous regions, providing a valuable reference for slope stabilization and landslide mitigation in seismic areas.