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<p>This research investigates the seismic behavior of reinforced soil retaining walls with modular block facing, a construction technique that has gained popularity due to its cost-effectiveness and ease of construction. Despite the practical advantages of the system, assessing its seismic performance remains a complex issue, particularly through scaled-down models that simulate realistic earthquake motion. To address this, the present study employs shaking table tests on reduced-scale models, incorporating variable amplitude sine wave excitation to closely mimic actual seismic conditions. The study further examines the impact of surcharge loading, a critical yet often overlooked parameter, to develop a comprehensive framework for seismic design. The experiments consider key influencing parameters such as surcharge loading (1&#xa0;kPa to 4&#xa0;kPa), base acceleration levels (0.10&#xa0;g to 0.36&#xa0;g), and excitation frequencies ranging from 2.5 to 10&#xa0;Hz are systematically analyzed to assess their influence on wall stability in both reinforced and unreinforced scenario. The results highlight the necessity of adopting performance-based seismic design frameworks for reinforced soil retaining walls, advocating for optimized reinforcement placement and strategic surcharge management to minimize seismic-induced settlements. By incorporating realistic ground motion characteristics, this study provides insights that challenge existing design paradigms and pave the way for engineering strategies that enhance long-term structural resilience.</p>

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Surcharge-Dependent Seismic Response of Modular Block Faced Geosynthetic Reinforced Walls

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Naga Vaishnavi Dasari,
  • Kalyan Kumar Gonavaram,
  • Heeralal Mudavath

摘要

This research investigates the seismic behavior of reinforced soil retaining walls with modular block facing, a construction technique that has gained popularity due to its cost-effectiveness and ease of construction. Despite the practical advantages of the system, assessing its seismic performance remains a complex issue, particularly through scaled-down models that simulate realistic earthquake motion. To address this, the present study employs shaking table tests on reduced-scale models, incorporating variable amplitude sine wave excitation to closely mimic actual seismic conditions. The study further examines the impact of surcharge loading, a critical yet often overlooked parameter, to develop a comprehensive framework for seismic design. The experiments consider key influencing parameters such as surcharge loading (1 kPa to 4 kPa), base acceleration levels (0.10 g to 0.36 g), and excitation frequencies ranging from 2.5 to 10 Hz are systematically analyzed to assess their influence on wall stability in both reinforced and unreinforced scenario. The results highlight the necessity of adopting performance-based seismic design frameworks for reinforced soil retaining walls, advocating for optimized reinforcement placement and strategic surcharge management to minimize seismic-induced settlements. By incorporating realistic ground motion characteristics, this study provides insights that challenge existing design paradigms and pave the way for engineering strategies that enhance long-term structural resilience.