摘要
应力波反射法是在混凝土桩基质量检测领域广泛应用的低应变动力检测方法，在深层搅拌桩中的应用尚处于探索阶段。基于低应变反射波时域、频域曲线分析原理，对桩身无缺陷和存在各种缺陷的深层搅拌桩低应变反射波波形曲线变化特征进行了时域和频域分析，对低应变检测需要注意的事项进行了总结。结果表明，频域分析是时域分析的一种必要的辅助措施，能够更好地判明被检测桩的实际状况。
Reflecting wave method is the extensive method of low-strain dynamic inspect for quality detection of concrete pile, but it is in searching stage for application on deep mixing pile, Based on the fundamental principle of the timedomain and frequency-domain analyses of reflected wave records for pile detection, the characteristics of low-strain reflecting wave curves of deep mixing pile without any defect and with some defects are analyzed, the key notices during the pile detecting are summarized, It is proved that the frequency-domain analysis is an necessary and beneficial complement for time-domain analysis to better detecting the real states of the piles.
出处
《建筑技术开发》
2006年第4期40-42,共3页
Building Technology Development
关键词
深层搅拌桩
质量检测
反射波法
时域分析
频域分析
Deep mixing pile
Quality detection
Reflected wave method
Time-domain analysis
Frequency-domain analysis
