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

FLAMISH BOND, TH ADVANTAGES OF FLAMISH BOND

TH ADVANTAGES OF FLAMISH BOND

What is preset in bridge bearing, Q. What is Preset in bridge bearing? ...

Q. What is Preset in bridge bearing? 'Preset' is a method to decrease the size of upper plates of sliding bearings in order to save cost. Normal length of an upper bearing plat

Show the design of howe truss, Q. Show the Design of Howe truss? Design...

Q. Show the Design of Howe truss? Design of Howe truss is the opposite to that of Pratt truss in that the diagonal members are slanted in the direction opposite to that of Prat

Explain the normal depth equation, Explain the Normal Depth Equation T...

Explain the Normal Depth Equation The equation is derived from the Chezy-Manning equation. As written below it determines the diameter of a circular storm or sanitary sewer wh

Determine the total active thrust by rebhann''s method, A retaining wall 3....

A retaining wall 3.6 m high supports a dry cohesion less backfill with a plane ground surface sloping upwards at a surcharge angle of 20° from the top of the wall. The back of the

Define resultant force on a given area of a horizontal plane, Resultant For...

Resultant Force on a Given Area of a Horizontal Plane By equation, the total vertical force applied to an area A on the plane is: Resultant Force R = ΡA = (lb/ft 2 )(ft 2 )

Inspection and testing, Q. Inspection and testing ? The inspection and ...

Q. Inspection and testing ? The inspection and tests on elastomer and the finished bearings are very important aspects of ensuring a satisfactory performance of the bearing. IR

Define the impact damage - underwater inspection of bridge, Define the Impa...

Define the Impact Damage - underwater inspection of bridge? Impact from moving vessels or logs carried during the floods can inflict damage to the structure. The impact or coll

Gts bench mark, Gts bench mark in thane district maharashtra

Gts bench mark in thane district maharashtra

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