Spalling reinforcement for pre stressing works, Civil Engineering

Assignment Help:

Spalling reinforcement for pre stressing works in anchor blocks

Reinforcement of anchor blocks in prestressing works usuallycomprises equilibrium reinforcement, bursting reinforcement and spalling reinforcement. Bursting reinforcement is used where tensile stresses are induced throughout pre-stressingoperation and maximum bursting stress takes place where stress trajectories are concave towardsthe line of action of the load. Reinforcement is required to resist these lateral tensile forces. For equilibrium reinforcement, it is needed where there are many anchorages in that pre-stressing loads are applied sequentially.

During pre-stressing, spalling stresses are produced in the region behind loaded faces of anchor blocks. At the zone between two anchorages, there is a volume of concrete surrounded by compressive stress trajectories. Forces are induced in opposite direction to applied forces and it forces the concrete out of the anchor block. Instead spalling stresses are set up because of the strain compatibility relating to the effect of Poisson's ratio.


Related Discussions:- Spalling reinforcement for pre stressing works

How to do deflection calculations, How to do deflection calculations Ba...

How to do deflection calculations Basic values of span to effective depth ratios for spans upto 10m may be taken as 7, 20 and 26 for cantilever, simply supported and continuous

Beam stress, what is the bending stress for a simply supported beam with th...

what is the bending stress for a simply supported beam with three equal concentrated loads that are equally spaced?

Joints in concrete pavements, Joints in Concrete Pavements: Concrete ...

Joints in Concrete Pavements: Concrete pavements in India are of the jointed plain (unreinforced type). The following types of joints are needed in them : (a) Transverse C

What is standard penetration test, a) Describe the recommended construction...

a) Describe the recommended construction practices to avoid deterimental differential settlement in large structures. (b) What is meant by bearing capacity of soil? How will ver

Necessity for road drainage - road drainage, Necessity for Road Drainage: ...

Necessity for Road Drainage: Poor drainage can cause damage to the various components of a road in the following manner: (a) Water can enter the various pavement layers th

Desirable properties of bitumen, Desirable Properties of Bitumen: For...

Desirable Properties of Bitumen: For performing as a good binder for road works, bitumen should have the following desirable properties: (a) When heated to the mixing temp

Explain in detail about textural classification, Explain in detail about  ...

Explain in detail about  Textural classification. Sketch neatly the Casagrande's plasticity chart indicating several aspects. How would you use it in classifying the fine graine

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