PHC管桩检测方法论文
试论PHC 管桩的检测方法
摘要:伴随着在港口工程中pfc 管桩的广泛使用,同时也出现了其缺点。最为普遍的就是其开裂、断桩等现象,所以要控制好其完整性。本文就多年工作研究分析了每种优缺点,提出了下文自己的见解,长期运用会起到良好的效果。
关键词:phc ;港口工程;技术
abstract: as the in port engineering pfc the widespread use of pipe pile, has also introduced its shortcomings. the most common is the crack, the phenomenon such as breaking pile, so want to control their integrity. this paper analyzes the work study for many years the advantages and disadvantages of each, and put forward the below their own views, long-term use can be a good effect.
keywords: phc; port engineering; technology
中图分类号: u65文献标识码:a 文章编号:
1 低应变法检测 phc 管桩完整性
1.1 低应变法测试原理
低应变反射波法是以应力波在桩身中的传播特征为理论基础的一种方法[5]。 该方法假定桩为连续弹性的一维均质杆件, 并且不考虑桩周土对沿桩身传播的应力波的影响。根据一维波动理论可知,桩阻抗是其横截面积、材料密度和纵波速度的函数,其函数表