Bridge Bearings Inspection Items And Standards

Testing items:

Quality of appearance, size, compression, shear, tensile, and durability. Also, the reaction force performance under low-rate deformation.

Spherical bearings

1. Testing standard: GB/T 17955-2009 “Spherical Bearings for Bridges”

2. Testing items:

Quality,

size,

vertical and horizontal bearing capacities.

friction coefficient,

rotational performance,

non-destructive testing.

Pot bearings

1. Testing standard: JT/T391-2019 “Pot Bearings for Highway Bridges”

2. Testing items:

Quality, size, vertical and horizontal capacities, friction coefficient, rotation angle, and non-destructive testing.

Plate bearings

1. Testing standard: JT/T4-2019 “Rubber Plate Bearings for Highway Bridges”

2. Testing items:

For ordinary plate bearings, check: external dimensions, appearance, and internal quality. Also, test:

compressive elastic modulus,

shear elastic modulus,

shear adhesion,

ultimate compressive strength,

allowable rotation angle

shear aging resistance.

For sliding plate bearings:

external dimensions,

appearance, internal quality,

elastic modulus, compressive strength

allowable rotation angle,

The friction coefficient between the PTFE and stainless-steel plates.