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

Define categories of spalls -underwater inspection of bridge, Define catego...

Define categories of Spalls -underwater inspection of bridge? Spalls are classified as follows:  i. Small spalls - up to 25 mm deep or approximately 150 mm in diameter. i

Numericals on settlement of foundation, A footing foundation for a water to...

A footing foundation for a water tower carries a load of 9000 kN and is 3.6 metres square. It rests on dense sand of 9 m thickness overlying a clay layer of 3 metres depth. The cla

Bending stress distribution diagram, i want to know how bending stress dist...

i want to know how bending stress distribution in c section

Void ratio, a soil sample is 38mm in diameter and 76mm and in its natural c...

a soil sample is 38mm in diameter and 76mm and in its natural condition weighs 168g.when dried completely in an oven weighs 13o.5g.the value of Gs is 2.73.what is the degree of sat

Simply supported beam, draw the shear force and bending moments of a beam

draw the shear force and bending moments of a beam

Write a short note on economic span of a bridge, Q. Write a short note on E...

Q. Write a short note on Economic Span of a Bridge? The span for which the total cost of bridge will be minimum is known as the economic span. The ratio of Cost of super str

Surface dressing - road pavements, Surface Dressing: Surface dressing...

Surface Dressing: Surface dressing is an application of a thin film of bituminous binder followed by a coat of aggregates of single size, rolled into position. Surface dressi

Quick cement, what is quick cement? its manufacture and uses? in which buil...

what is quick cement? its manufacture and uses? in which building it is used?

coursework (commercial management), Ask que1. Identify the risks involved ...

Ask que1. Identify the risks involved in this project related to cost in the perspective of the customer and analyse the probability of acceptance of such a project by customers. 2

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