Deflection in concrete structures, Civil Engineering

Assignment Help:

Tension reinforcement leads to increasing deflection in concrete structures?

In BS8110 a modification factor is applied to span/depth ratio to take into account effect of tension reinforcement. Actually deflection of concrete structure is affected by stress and amount of tension reinforcement. To understand their relationship let us consider the subsequent equation relating to beam curvature:

Curvature = 1/r = e/ (d-x)

Where r = radius of curvature

  e = tensile strain in tension reinforcement

  d = effective depth

  x = depth of neutral axis

Provided that tensile strain in tension reinforcement remains constant, curvature of concrete structure increases with depth of neutral axis. It is perceived that depth of neutral axis rises with tension steel ratio. Consequently curvature of concrete section is directly proportional to the tension steel ratio. Additionally, largervalue of the depth of neutral axis enhances increased area of concrete compression so that effect of creep on deflection appears to become significant.


Related Discussions:- Deflection in concrete structures

What is thermo-electric prestressing, What is Thermo-electric prestressing ...

What is Thermo-electric prestressing We know that, stretched tendons are used in prestressed concrete. Stretching of tendons may be accomplished by using jacks or by other mea

Equipments required for under water inspection of bridge, Define Equipments...

Define Equipments and tools required for under water Inspection of Bridge? Since the underwater inspection of stone masonry substructures involve only a cursory inspection of t

What do you mean by slip siding, Q.What do you mean by Slip Siding? If ...

Q.What do you mean by Slip Siding? If the Station yard is in a gradient steeper than 1 in 260 or there is a continuous falling gradient away from the station there is a possibi

Define analytical methods approved under the clean water act, Define Analyt...

Define Analytical Methods Approved Under the Clean Water Act? Analytical Methods Approved Under the Clean Water Act CWA Section 304(h) needs EPA to publish test procedures (ana

Rectilinear motion, A train starts from rest as A and accelerates at 1,7m/...

A train starts from rest as A and accelerates at 1,7m/s2 to full speed at which it maintains until the brakes gives it a deceleration of 1,7m/s2 to stop at B. AB=1,6km. determine

Show the properties of elastomer, Q. Show the Properties of Elastomer ? ...

Q. Show the Properties of Elastomer ? Though elastomeric bearings offer a number of advantages as compared to steel bearings, many failures have been reported pertaining to the

Determine the variation of safe bearing capacity of soi, State the algebrai...

State the algebraic equations showing the variation of safe bearing capacity of soil (for clay and sand to be given separately) in shallow foundation with: (i) depth of foundati

Mechanics of solids, if we take brass & steel and on applying temperature t...

if we take brass & steel and on applying temperature the brass contracts the steel expands how it is possible

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