公开(公告)号：US11066805B2

公开(公告)日：2021-07-20

申请号：US16477184

申请日：2018-03-19

Applicant: Dalian University of Technology

Inventor： Jianbo Li ,  Weihong Liu ,  Zhiyuan Li ,  Gao Lin

IPC: E02D33/00 ,  E02D27/32 ,  G01H15/00 ,  E02D27/34

Abstract: A measuring device and method for horizontal dynamic impedance of specified foundation depth based on differential response analysis of pulse excitation. The measuring method is realized based on the measuring device. Two rigid piles with different lengths are embedded into different foundation depths. Motion characteristics of the two rigid piles in the process of collision impact with the outside are different under the same pulse excitation. Dynamic impedance of specified foundation depth is deduced from the formula according to the differential response. Single-degree-of-freedom oscillators are arranged on the pile heads of the two piles, and strain gauges are arranged on the bottoms of the single-degree-of-freedom oscillators to obtain stress states of the single-degree-of-freedom oscillators, thereby calculating the relative displacements of the single-degree-of-freedom oscillators. This is simple in structure, reliable in measurement and convenient in data collection and processing.