不同锈蚀度时海底隧道锚固支护结构岩锚相互作用分析
发布时间：2018-08-02 13:21
【摘要】：基于长期氯离子侵蚀及干湿交替环境作用,海底隧道锚固支护结构发生锚杆锈蚀,造成支护结构强度工作性能劣化,结合某海底隧道Ⅳ级围岩锚固支护结构设计,基于前人研究理论及试验成果,采用数值分析软件FLAC3D并借鉴有限元强度折减思想,分析不同锈蚀程度下隧道的位移、应力、塑性区等影响规律,探讨锈蚀对锚固支护结构体系中岩锚相互作用的影响。研究结果表明:随着锈蚀度的增加,隧道加锚围岩区的位移增大,塑性区扩展,说明锚杆锈蚀削弱了锚固支护结构的整体支护强度;锈蚀对隧道加锚围岩起拱线处的收敛变形影响明显。锚杆锈蚀降低了锚固支护结构中岩锚相互作用,锈蚀对锚固注浆体的黏结作用的损失影响比对锚杆应力作用的损失影响大。
[Abstract]:Based on the effect of long-term chlorine ion erosion and alternating dry and wet environment, anchor rod corrosion occurs in undersea tunnel Anchorage support structure, which results in the deterioration of strength working performance of supporting structure. Combined with the design of a subsea tunnel grade 鈪，
本文编号：2159568
[Abstract]:Based on the effect of long-term chlorine ion erosion and alternating dry and wet environment, anchor rod corrosion occurs in undersea tunnel Anchorage support structure, which results in the deterioration of strength working performance of supporting structure. Combined with the design of a subsea tunnel grade 鈪，
本文编号：2159568
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