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An improved hammer‐impact technique for strong shear wave generation
Author(s) -
Maiguma Teruki
Publication year - 1982
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.4290100109
Subject(s) - hammer , impulse (physics) , shear (geology) , repeatability , engineering , geotechnical engineering , structural engineering , geology , physics , petrology , chemistry , chromatography , quantum mechanics
As part of fundamental research on seismic energy sources, a series of experiments was made to improve the field procedures for producing SH waves by using the so‐called plank‐striking method and also to develop more adequate techniques to generate high‐energy shear waves. Based on the results obtained, a flexible impact device which is similar to a slingshot was made to apply a relatively strong impulse at the surface of the ground. This shear wave generator was demonstrated to have desired features in its low cost operation, easy repeatability, high reproducibility and relatively large output strength. Such a shear source, therefore, provides a useful means of evaluating dynamic characteristics of the foundation soils accurately and economically which can play an important role in current earthquake engineering.