Loading and unloading cycles for soil nails, Civil Engineering

Assignment Help:

In carrying out pull-out tests for soil nails, it generally requires the unloading and loading of soil nails of several cycles up to 80% of ultimate tensile strength of soil nails. Principal function of soil nail tests is to verify the design assumptions on the bond strength between grout and soil that is likely to exceed the design values based on past experience. Additionally the ultimate bond strength between grout and soil can be determined and this information is helpful as a reference for future design.

Then someone may query the purpose of conducting load/unloading cycles of soil nails as it doesn't provide information on the above two major purposes of soil nails. Actually loading and unloading soil nails can provide other significant information on their elastic and plastic deformation behaviour. Though as stress levels in soil nails are generally low, knowledge on elastic and plastic performance may not be of significant value. Alternatively the creep and slippage performance of soils nails can also be obtained that may be useful for some soils.

2100_Loading and unloading cycles for soil nails.png

Fig: Typical pull-out test result


Related Discussions:- Loading and unloading cycles for soil nails

Draw sketch for track in a cutting on a mainline route, Q. Draw a neat dim...

Q. Draw a neat dimensioned cross-sectional sketches of a - i. New single Line B.G. track in a cutting on a mainline route. ii. New double Line B. G. track on a trunk route ha

Highway pavement design, Explain the important factors affecting the design...

Explain the important factors affecting the design of pavement?

Energy dissipation at outlets - typical drainage outlet, Q. Energy dissipat...

Q. Energy dissipation at outlets - typical drainage outlet? Flow velocity at outlets is generally high. Without proper control of this energy, subsequent bank erosion can resu

Explain the swell factor of soil, Explain the Swell Factor of Soil A so...

Explain the Swell Factor of Soil A soil's swell factor represents the fact that the volume of soil placed by nature in the ground is not the same as the volume of the same mass

Factors determining the stability of a single armour unit, Q. Factors deter...

Q. Factors determining the stability of a single armour unit There are mostly three major factors that govern the stability of an armour unit, viz gravity, intertangling and s

Shear and tensile strength, What is the difference between shear and tensil...

What is the difference between shear and tensile strength? Ans) Tensile Strength for a Bolt is explained by applying a Force along it long axis. Shear Strength for a Bolt is exp

science and materials, the behaviour of structural materials using compara...

the behaviour of structural materials using comparative statement when they are formed into structural member

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