永久振动环境中岩土锚杆适用性的分析和测试

对土介质中的全长注浆锚杆进行了固有特性分析，推导了锚杆固有频率和固有振型的计算公式。考虑对永久震动环境中能否设计永久锚杆缺少经验，对所涉及的列车激励场地做了动力测试和频谱分析，以避免使支护构件的自振频率接近该场地中外界激励的优势频率和介质的一阶卓越频率。研究表明锚杆一阶纵向自振频率、场地卓越频率、列车优势频率分布于不同的频带，列车激励不致造成锚杆的共振。通过这一分析，为进一步认识锚杆支护结构在复杂环境下的适用性问题提供了参考。

Analysis and test on applicability of geotechnical engineering anchorage in permanent vibration environment

Natural characteristics analysis of wholly grouted bolts in soil medium was presented,and a calculation formula of natural frequency and natural vibration type was derived. For the lack of experience about the applicability of permanent anchorage in vibration environment, a dynamic test of one field under train excitation is conducted to avoid anchorage-train resonance.The results show that the first order longitudinal natural frequency of anchorage, field predominant frequency and train dominant frequency distribute in different frequency band,and train excitation causes no resonance effect with anchorages. Ralated researchs provided a important reference method for preceeding research on the applicability problem of bolt support structure in complicated environment.