摘要
通过分析国内外应力波无损检测技术的相关理论和工程应用实例,采用基于弹性波反射原理的无损检测技术对不同类型锚杆(索)进行了理想模型试验和现场原型检测,并详细记录施工资料与锚固体无损检测数据。随机抽取实际工程样本进行检测,通过剖面查验等方法对其检测结果进行对比、校正。试验结果表明:基于弹性波反射原理的锚杆(索)无损检测技术能快速有效地检测锚杆、钢锚管及锚索的锚固段、自由段长度、缺陷出现的位置和注浆饱和度。锚索施加应力后,锚索自由端长度和锚固端长度的检测信号明显减弱,须通过进一步试验来确定。
With a reviewof theory and application of stress wave nondestructive testing technology,at home and abroad,the ideal model test and the prototype test for different types of anchor rod/cable were performed using the nondestructive testing technology based on elastic wave reflection principle. The construction details and the nondestructive testing data of the anchor members were recorded. The actual engineering samples were randomly selected.The testing results were compared and checked through the section inspection method. The testing results showthat the nondestructive testing technology used for anchor rod/cable based on elastic wave reflection principle has great advantages.It can effectively test the lengths of anchor, steel anchor pipe and anchor cable,the length of the free part,the defect location and the saturation of grouting.With the imposed stress in anchor cable,the testing signals of the lengths of the free part and the anchorage part were weakened; thus,a further test was required.
出处
《铁道建筑》
北大核心
2017年第10期105-108,共4页
Railway Engineering
关键词
岩土工程
无损检测
模型试验
锚杆(索)
声频应力波
Geotechnical engineering
Nondestructive testing
Model test
Anchor rod/cable
Acoustic stress wave
