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

Explain the components of a rebound hammer, Explain the Components of a reb...

Explain the Components of a rebound Hammer? Several components of a rebound hammer are displayed in below Figure. 1. Concrete surface; 2. Impact spring; 3. Rider on gui

Pumps, largest centrifugal pumps

largest centrifugal pumps

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

Features of a stratigraphical survey phase, Features of a Stratigraphical S...

Features of a Stratigraphical Survey phase The principal features of a Stratigraphical Survey phase are: a)  Determination of depth of ground water, thickness, extent and ap

Cement Sand Plaster, How to use plaster cement in sand?  Cement sand pl...

How to use plaster cement in sand?  Cement sand plaster is a layer of cement & sand mortar that is applied over walls made of brickwork, cement block work, RCC walls and RCC co

Precaution of damp, i need simple ans for this question tell me precaution ...

i need simple ans for this question tell me precaution of dampness

Graphics, 1. Draw the projections of a line AB that is 50 mm long and is pa...

1. Draw the projections of a line AB that is 50 mm long and is parallel to both the HP and the VP. The line is 40 mm above the HP and 25 mm in front of the VP. 2. A line AB, 50 mm

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