Explain types of bearings, Civil Engineering

Assignment Help:

Q. Explain types of bearings?

The bearing transfers the forces coming from the superstructure to the substructure. It also allows for necessary movements in the superstructure which are caused by temperature variations. The following types of bearings are generally used.

a) Sliding bearing - permitting rotation and translation

b) Rocker and roller bearings - permitting rotation and translation respectively.

c) Elastomeric bearings - Made of natural or synthetic rubber of shore hardness of approximately 50 to 70. They are very stiff in resisting volume change but are very flexible when subjected to shear. They are generally reinforced with steel plates in alternate layers to reduce bulging. When used with a steel or concrete girder these permit moderate longitudinal movements and small rotations at the ends. These are provided for bridges having RCC or Pre stressed girders and can take deflection a well as movement

d) P.T.F.E. Bearings - The PTFE can be unfilled or filled with glass fibre or other reinforcing material. These are used either to provide rotation by sliding over cylindrical or spherical surfaces or to provide horizontal sliding movement over flat surface or a combination of both. Where there are large displacements accompanied with relatively small loadings, as in case of centrifugal loads, wind loads or seismic loads, PTFE sliding bearings are utilised.


Related Discussions:- Explain types of bearings

Transportation, investigation of strength properties of black cotton soil s...

investigation of strength properties of black cotton soil stabilised with fly ash and georeinforcement

Cutting edge in well foundation, Q. Cutting edge in well foundation? Th...

Q. Cutting edge in well foundation? The function of cutting edge on well foundation is basically to cut through the earth which being sunk. The angle of well curb pushes the ea

Materials that provide a path to the magnetic flux are , Materials that pro...

Materials that provide a path to the magnetic flux are? Answer: These are magnetic materials

Test leakage of constructed gravity pipelines, Question Have air test o...

Question Have air test or water tests be selected to test leakage of constructed gravity pipelines ? Answer For gravity pipes, air tests are carried out after completi

Integration of the strain settlement, All soils subjected to stress undergo...

All soils subjected to stress undergo strain. This will be taking place within the soil skeleton. This strain is caused by rolling, slipping, sliding and crushing at the particle c

Determine length of guide bunds, Q. Determine Length of guide bunds? Leng...

Q. Determine Length of guide bunds? Length of a guide bund has to be such that the flow approaching even from behind the guide bund would pass through the bridge with minimum obl

Chapter 9, define of window pivoted

define of window pivoted

How to calculate the coefficient of permeability, The discharge of water co...

The discharge of water collected from a constant head permeameter in a period of 15 minutes is 500 ml. The internal diameter of the permeameter is 5 cm and the measured difference

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd