Experimental Study on the Damage of Bridge Pier under the Impact of Rockfall

Table 3

Test instruments introduction.

Test instrument	Function	Picture
TST5933 dynamic signal testing and analysis system	Testing physical quantities of stress, strain, vibration (acceleration, velocity, displacement), and so on
Impact testing system	Converting the measured signals into charge, voltage, and digital signals
YHD displacement sensor	Converting electric quantity into displacement
HX-4e high-speed camera	Recording the whole process of collision and failure