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

Scaffolding, definition for double type scaffolding

definition for double type scaffolding

Chemical prestressing, advantages and disadvantages of chemical prestressin...

advantages and disadvantages of chemical prestressing over conventional prestressing?

Can u give me a sample assignment, im newer to the courses so i would like ...

im newer to the courses so i would like to know about the assignment types. in this case can u please show me a sample assignment?

Determine the soil shrinkage, Soil at a borrow area has a total unit weight...

Soil at a borrow area has a total unit weight of 120-PCF and a water content of 15 percent.  The soil from the borrow area will be used as structural fill and compacted to an avera

Doors and windows, what are the actuall windows and door dimensions e.g AN ...

what are the actuall windows and door dimensions e.g AN ND4

Define rotation - actions in pot bearings, Define Rotation - Actions in POT...

Define Rotation - Actions in POT Bearings? POT bearings are associated with large rotations which are accommodated by the deformation of elastomeric pad. Large cyclic rotations

Compute the thermal stresses in steel, Compute the thermal stresses in stee...

Compute the thermal stresses in steel: Consider the compound bar shown in below figure consisting of a steel bolt of diameter 18 mm, surrounded through a copper tube of outer

Explain sedimentation, Explain Sedimentation 1. Sedimentation bas...

Explain Sedimentation 1. Sedimentation basin or clarifier is used to remove particles that will settle in a reasonable time period 2. Basins are usually rectangular or

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