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

Table 6

PPV and amplification factors of the typical nodes.

Age of latest poured section	Peak of load/(cm/s)	Node at center of box girder				Node at edge of box girder
		Vertical velocity		Horizontal radial velocity		Vertical velocity		Horizontal radial velocity
		peak/(cm/s)	Amplification factor	Peak/(cm/s)	Amplification factor	Peak/(cm/s)	Amplification factor	Peak/(cm/s)	Amplification factor
3 d	0.03	0.036	1.20	0.041	1.37	0.073	2.43	0.117	3.90
	0.5	0.59	1.18	0.69	1.38	1.21	2.42	1.95	3.90
	2	2.37	1.19	2.76	1.38	4.85	2.43	7.8	3.90
7 d	0.03	0.036	1.20	0.041	1.37	0.072	2.40	0.117	3.90
	0.5	0.59	1.18	0.69	1.38	1.21	2.42	1.95	3.90
	2	2.37	1.19	2.76	1.38	4.83	2.42	7.82	3.91