完整锚杆横向动力响应问题的求解与分析

锚杆锚固质量两个主要衡量指标是锚固状态和锚固力。锚固状态是指锚杆施工后的锚固段长度、自由段长度、密实度和施工缺陷等;锚固力指现场拉拔试验过程中临界破坏点的拉拔力,又称极限抗拔力。利用振动波传播具有的许多独特性质,可以在锚杆表面人工激发应力波来探测锚杆体系内部的结构和性质,以此来判断锚杆的锚固状态。锚杆的无损检测研究已提出多年,但研究方向主要为纵向振动,有关锚杆系统的横向动力响应很少有人提及。建立了锚杆体系横向动力响应的理论模型,推导了完整锚杆的理论半解析计算公式,在此基础探讨了锚杆系统横向振动随锚杆长度、激振力作用时间等变化的一些规律。

Analysis on Lateral Dynamic Response of Anchor System

The anchorage state and anchorage force are two main indices that appraise the anchorage properties.The anchorage state includes the anchoring length,free length,compactness,and defects due to construction etc.The anchorage force indicates the critical drawing load in the course of pull-out test in situ.Utilizing the acoustic wave's characteristics,we can detect the interior structure and quality of the anchor system and,judge the anchorage state by beating the anchor bar's top with a hammer.Nondestructive ...