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In Engineering (Bridge work), Why are steel plates inserted inside bearings in elastomeric bearings?

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Question ajoutée par Muhammad Shakeel , CAD Design Manager , M/S zeeruk Intl.
Date de publication: 2015/03/13
Muhammad Shakeel
par Muhammad Shakeel , CAD Design Manager , M/S zeeruk Intl.

very Comprehensive Answers. 

محمد يونس
par محمد يونس , مهندس مشرف , الشركة العامة للكهرباء

I agree with answer Mr Mohamed and Alexs

Ali Mohamed Ahmed
par Ali Mohamed Ahmed , site engineering , شركة مقاولات

 ..I agree with Mr. Mohamed Galal and Mr. Alex  answers..Thank You

Mohamed Galal Hussein Ahmed Mohamed
par Mohamed Galal Hussein Ahmed Mohamed , Technical Mnager , Fast Building Contracting Co.

For elastomeric bearing to function as a soft spring, the bearing should be allowed for bulging laterally and the compression stiffness can be increased by limiting the amount of lateral bulging. To increase the compression stiffness of elastomeric bearings, metal plates are inserted.

After the addition of steel plates, the freedom to bulge is restricted and the deflection is reduced when compared with bearings without any steel plates under the same load. Tensile stresses are induced in these steel plates during their action in limiting the bulging of the elastomer. This in turn would limit the thickness of the steel plates.

Alex Al Yazouri
par Alex Al Yazouri , General Manager , Al Mushref Cooperative Society

In order to make a elastomeric bearing act/ function as a soft spring it should be made to allow it to bulge laterally and also the stiffness compression can be increased by simply increasing the limiting amount of the lateral bulging. In many cases in order to increase the compression stiffness of the bearing the usage of metal plates is made.

Once steel plates are included in the bearings the freedom of the bulge is restricted dramatically, also the deflection of the bearing is reduced as compared to a bearing without the presence of steel plates. The tensile stresses of the bearings are induced into the steel plates. But the presence of the metal plates does not affect the shear stiffness of the bearings.

teklit haile
par teklit haile , site engineer , defence construction enterprise

the steal plates  provided are to allow horizontal movement of the bridg. i.e, bridgs are designed as simply suported on either side of their suppot.

Mahmoud Zaher Tarakji
par Mahmoud Zaher Tarakji , مدير , أوال جاليري

I agree with MR Mohamed Galal Hussain

henry lozano
par henry lozano , Senior Auto cad , Inco-labs

steel platesb function is for sheer stressing when stiffines works

mohamed wathek khochtali
par mohamed wathek khochtali , structural design engineer , CBI Tunisia

To add more friction between them

candidus obule
par candidus obule , FACILITY SUPERINTENDENT , WSPOL

For structural balancing and alignment

Abdallah  Darwiche
par Abdallah Darwiche , SUPERINTENDENT CIVIL WORK , FCC -fast cosortium

THIS FOR ABSORPTION  OR ADJUSTED THE LOAD PRESSURE AND VIBRATION 

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