“自保护、自协调”锚拉桩结构体系计算方法研究

Study on calculation method about self-protection and self-coordination anchored pile structural system

摘要:

本研究针对传统锚拉桩挡土墙在地震及复杂地质条件下易发生破坏的问题，探讨了新型锚索自保护装置对结构性能的改进效果。通过建立两阶段力学模型，采用有限单元法结合Matlab编程进行数值模拟计算，系统分析了该新型挡土结构的受力特性。研究发现，锚索自保护装置在超载时能产生可控塑性变形，有效避免锚索脆性破坏，使结构具备自适应调节能力。数值计算表明，该装置能通过塑性变形耗散能量，显著降低结构内力峰值，改善整体受力状态，为传统挡墙注入了动态响应的“生命力”。这些研究成果为提升挡土结构安全性提供了理论基础，但关于装置参数优化及长期性能等方面仍需进一步研究。

Abstract:

This study investigates the performance improvement of traditional anchored pile retaining walls equipped with novel anchor cable self-protection devices under seismic and complex geological conditions. A two-stage mechanical model was established and analyzed using finite element method coupled with Matlab program for numerical simulation，and the mechanical characteristics are systermatically analyzed. The results demonstrate that the self-protection device can generate controlled plastic deformation under overload conditions， effectively preventing brittle failure of anchor cables while endowing the structure with self-adaptive adjustment capability. Numerical calculation reveals that the device dissipates energy through plastic deformation， significantly reducing peak internal forces and improving overall stress distribution， thereby introducing dynamic “vitality” to conventional retaining structures. These findings provide theoretical foundations for enhancing the safety of retaining structures， though further research is required regarding device parameter optimization and long-term performance evaluation.