Experimental Study on Friction Sliding Performance of Rubber Bearings in Bridges

Table 1

Scheme of the bearing test.

Type of tests	Bearing models			Thickness of rubber layers (mm)	Thickness of steel plates (mm)	Pressure (MPa)
Ultimate shear failure test	S-1	Laminated rubber bearings	GYZ	48	32	4
	S-2		GYZ	60	47	6
	S-3		GYZ	60	47	8
Frictional sliding test	M-1	Laminated rubber bearings	GJZ	48	30	4
	M-2		GJZ	48	30	6
	M-3		GJZ	48	30	8
	M-4		GJZ	48	30	10
	M-5		GJZ	60	27	4
Low-frequency cyclic loading test	Q-1	Lead Rubber Bearing	Y4QG1.0	60	70	6

Note: In the ultimate shear failure tests, the GYZ represents that the diameter of the circular rubber bearing is 400 mm and the total thickness of the bearing is 80 mm. In the frictional sliding tests, the GJZ represents that the dimensions of the rectangular bearings are 500 mm and 550 mm, and the total thickness of the bearing is 78 mm. In the low-frequency cyclic loading test, the Y4QG1.0 represents that there are 4 hole cores in the bearing, the diameter of the LRB is 600 mm and total thickness is 130 mm. The rest are similar with the above-mentioned.