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

Number of segments for segmental linings in tunnelling, Q. Number of segmen...

Q. Number of segments for segmental linings in tunnelling? For the construction of tunnels by segmental linings, choice of the number of segments affects the durability and cos

Measure the stress increment, A raft of size 4 m × 4 m carries a uniform lo...

A raft of size 4 m × 4 m carries a uniform load of 200 kN/m 2 . Using the point load approximation with four equivalent point loads, measure the stress increment at a point in the

Reasons for blockage in pumping concrete, Q. Reasons for blockage in pumpin...

Q. Reasons for blockage in pumping concrete ? Concrete pumping is normally adopted in highly elevated locations for which access for concrete trucks is difficult. Construction

Levelling, the cooke''s reversible level

the cooke''s reversible level

Concrete, what is the heat of hydration and gel space ratio?

what is the heat of hydration and gel space ratio?

Highway Materials, How to identify bitumen & tar just looking at those two ...

How to identify bitumen & tar just looking at those two binders.

Calculate the number of trucks for fleet working, A contractor was awarded ...

A contractor was awarded a Contract to excavate and haul 200,000-yds 3 of silty clay (USCS classification ML) with a bulking factor of 30%.  The contractor's fleet of dump trucks

Curved beams, Sir how can we find location of neutral axis for a curved bea...

Sir how can we find location of neutral axis for a curved beam of circular cross section,,,

Use plain dumb-bell type and center-bulb sort, Question While selection...

Question While selection of waterstop, shall engineers use plain dumb-bell type , center-bulb sort ? Answer Plain dumb-bell kind is used for joint site where sm

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