<p>To study the stability of embankments widened using cast-in-place lightweight foamed concrete, the strength reduction method was applied in ABAQUS finite element software, evaluating the effects of the embankment height, connection step size, and bottom width of the lightweight foamed concrete. The numerical simulation results indicated that the failure surface of the widened embankment bypassed the lightweight foamed concrete and ran through the original embankment constructed with soil. The safety factor of the widened embankment significantly decreased with the increase in the embankment height, following an exponential curve. However, the effects of the connection step size and bottom width of the lightweight foamed concrete on the safety factor of the widened embankment were relatively small. Nonetheless, the safety factor still followed an exponential curve as it slightly increased with the increase in the bottom width of the lightweight foamed concrete. These results provide a reference for maximizing the stability of embankments widened using cast-in-place lightweight foamed concrete.</p>

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Stability of Embankments Widened Using Lightweight Foamed Concrete

  • Feilong Cui,
  • Ningning Wu,
  • Junchao Yang,
  • Yatao Zhang,
  • Haiying Chen

摘要

To study the stability of embankments widened using cast-in-place lightweight foamed concrete, the strength reduction method was applied in ABAQUS finite element software, evaluating the effects of the embankment height, connection step size, and bottom width of the lightweight foamed concrete. The numerical simulation results indicated that the failure surface of the widened embankment bypassed the lightweight foamed concrete and ran through the original embankment constructed with soil. The safety factor of the widened embankment significantly decreased with the increase in the embankment height, following an exponential curve. However, the effects of the connection step size and bottom width of the lightweight foamed concrete on the safety factor of the widened embankment were relatively small. Nonetheless, the safety factor still followed an exponential curve as it slightly increased with the increase in the bottom width of the lightweight foamed concrete. These results provide a reference for maximizing the stability of embankments widened using cast-in-place lightweight foamed concrete.