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

Human resource, Ask question #Minimum 100 words acceFor this discussion, lo...

Ask question #Minimum 100 words acceFor this discussion, look at a specific country of your choice. Develop two brief introductions, one for a U.S. peer, and one for a peer in anot

Surveying, What is the shrinkage factor

What is the shrinkage factor

How can designer cater for stability of minor slips, Question Soil nail...

Question Soil nails are mostly designed for stabilization of key slips . How can designer cater for stability of minor slips? Answer There are many methods to treat mi

Show suspended impurities in water, Q. Show Suspended Impurities in water? ...

Q. Show Suspended Impurities in water? The solid particles which are dispersed in water are referred as suspended Impurities. These are microscopic as under-

Illustrate the types of prestressing, Illustrate the types of prestressing ...

Illustrate the types of prestressing we can classify prestressing into two forms  : (a)  longitudinal prestressing, and (b)  circular prestressing.

Machanics, differentiate between moment & couple

differentiate between moment & couple

Geotech, for zero air void line sr is

for zero air void line sr is

How quality control is maintained in a rolled fill dam, Sketch a curve show...

Sketch a curve showing the relation among dry density and moisture content for Standard Proctor test and indicate the salient features of the curve. Describe why soils are compacte

Surveying, working from whole to part

working from whole to part

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