Influence of Blasting Vibration on Young Concrete Bridge: A Case Study of Yesanhe Super Large Bridge

Table 1

PPV and main frequency of the bridge under blasting tests.

Explosion source	Pier	Number of monitoring points	Location of monitoring points	Vertical PPV (cm/s)	Vertical main frequency (Hz)	Horizontal PPV (cm/s)	Horizontal main frequency (Hz)
Intake slope	4# pier	5#	Pier foundation	0.03	39.1	0.09	22.3
		7#	Edge of box girder	0.03	39.1	0.11	17.4
		8#	Edge of box girder	0.03	31.3	0.16	17.4
		9#	Center of box girder	0.03	45.3	0.08	36.3
		10#	Edge of box girder	0.12	31.3	0.2	17.4
	3# pier	11#	Pier foundation	0.03	31.3	0.04	26
		12#	Edge of box girder	0.04	28.4	0.05	26
		13#	Edge of box girder	0.06	41.7	0.07	34.7
Right abutment	4# pier	5#	Pier foundation	0.03	31.3	0.03	25.8
		6#	Pier foundation	0.03	26.3	0.07	26.3
		8#	Edge of box girder	0.07	26.3	0.1	25
		10#	Edge of box girder	0.01	22.7	0.09	17.2
	3# pier	11#	Pier foundation	0.03	21.7	0.03	26.3
		12#	Edge of box girder	0.09	26.3	0.09	26.3
Left abutment	4# pier	5#	Pier foundation	0.03	15.6	0.04	13
		6#	Pier foundation	0.03	15.7	0.04	11.2
		8#	Edge of box girder	0.16	26.1	0.14	15.7
		9#	Center of box girder	0.09	39.1	0.08	19.6
		10#	Edge of box girder	0.01	39.1	0.08	26
	3# pier	11#	Pier foundation	0.06	19.5	0.09	11.2
		12#	Edge of box girder	0.14	39.1	0.04	11.2
		13#	Edge of box girder	0.32	20	0.09	13
		19#	Pier foundation	0.07	26	0.04	39.1
		20#	Inside of box girder	0.1	39.1	0.19	19.2