地震工程学报2024，Vol.46Issue(1)：59-65,7.DOI:10.20000/j.1000-0844.20220704001
单排弹性实心桩对SH波的散射求解问题
An approach for solving the scattering of SH waves by elastic solid piles in one row
摘要
Abstract
The scattering issue of shear horizontal(SH)waves from solid elastic piles in a single row was analyzed using the wave function expansion technique and Graf's addition theorem.By changing a single variable,we analyzed the effects of the pile-soil shear modulus ratio and the number of piles on the vibration isolation capabilities of row piles.Our results show that when di-mensionless frequency is low to medium,the dimensionless displacement curve beyond the row piles tends to zero at infinity.As the number of piles increases,the vibration isolation effect also gradually improves.However,the ratio of dimensionless displacement changes greatly in the range of 0-70a following the piles,leading to unstable and poor vibration isolation performance.When the pile-soil shear modulus ratio is less than 500,the vibration isolation effect within the range of 250a-380a proves to be satisfactory.Conversely,when the pile-soil shear modulus ratio is equal to or exceeds 500,there is no substantial increase in the vibration isolation effect.This suggests that the pile can be regarded as a rigid pile at this time.In instances of medium dimen-sionless frequency,the vibration isolation effect performs well within the 100a-120a range.The ratio of dimensionless displacement in this range experiences a sudden increase before gradually de-creasing.However,as the dimensionless frequency escalates to high frequencies,the vibration isolation effect shows minor variation with different numbers and exhibits good performance close to the row piles.关键词
波函数展开法/格拉夫加法定理/隔振效果Key words
wave function expansion method/Graf's addition theorem/vibration isolation effect分类
建筑与水利引用本文复制引用
刘晶磊,吴浩,张冲冲,曹晋源,李秀欣..单排弹性实心桩对SH波的散射求解问题[J].地震工程学报,2024,46(1):59-65,7.基金项目
2022年度河北省高等学校科学研究重点项目(ZD2022017) （ZD2022017）
河北省创新能力提升计划项目(21567614H) （21567614H）
2023年张家口市市级科技计划财政资助项目(2311007A) （2311007A）
