Designing of retaining walls, Civil Engineering

Assignment Help:

Question
What is function of shear keys in designing of retaining walls?

Answer
In formative external constancy of retaining walls, failure modes similar to bearing failure, sliding and overturning are usually considered in design. In considering criterion of sliding, sliding resistance of retaining walls is derived from base friction between wall base and foundation soils. To enlarge sliding conflict of retaining walls, rather than providing a large self-weight or a large retained soil mass, shear keys are to be installed at wall base. Opinion of shear keys is as follows-

Main purpose of installation of shear keys is to enhance an extra passive resistance industrial by height of shear keys. However, active pressure industrial by shear keys increases at the very same time. Success of shear keys lies in the information that enhance of passive pressure go over increase in active pressure, resulting in an improvement of sliding conflict.

On other hand, friction between wall base and foundation soils is usually about a fraction of an angle of interior resistance as in about 0.8φ where φ is an angle of inner friction of foundation soil. When a shear key is installed at base of the retaining wall, failure surface is changed from wall base or soil horizontal plane to a plane within foundation soil. Therefore, friction angle mobilized in this case is φ in its place of 0.8φ in earlier case and sliding resistance be capable of be enhanced.

 


Related Discussions:- Designing of retaining walls

Levelling, how to go about the collimation method.

how to go about the collimation method.

Define marine growth - underwater inspection of bridge, Define Marine growt...

Define Marine growth - underwater inspection of bridge? Generally, in seawater marine growth takes place. Acid generated by the marine growth attacks concrete. This can lead to

Execution compression test for concrete, Question In execution compression...

Question In execution compression test for concrete , have to test cubes .Test cylinders be approved? Answer Essentially, results of compression test carried out by using cu

Design a water supply scheme for new railway colony, Q. Design a water supp...

Q. Design a water supply scheme for new Railway colony based on the following data's. i. Requirement of Loco and domestic consumption 5 lacs gallon per day. ii. Source of wat

Calculate the energy loss in the piping system, The head (energy) loss in t...

The head (energy) loss in the piping system between points 1 and 7 is the most nearly. Solution: 3 ft. The difference between point 1 and point 7 = 10 ƒt - 7 ƒt = 3 ƒt

Chemical analysis of fe 415., in this chemical analysis what is the meaning...

in this chemical analysis what is the meaning of c% and s% and P%

Deterioration in steel, How abrasion and earthquake causes deterioration in...

How abrasion and earthquake causes deterioration in steel structures

Permanent magnets are made of what kind of materials, Permanent magnets are...

Permanent magnets are made of what kind of materials ? Answer: It is made of hard magnetic materials.

Difference between direct circulation and reverse drilling, Question Wh...

Question What is main difference between direct circulation drilling and reverse circulation drilling? Answer In straight circulation drilling and reverse circulati

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