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 about bentonite slurry and polymeric slurry, Q. Explain about Bento...

Q. Explain about Bentonite slurry and polymeric slurry? For the construction of diaphragm walls, bentonite slurry is generally used to form a filter cake on walls of trenches t

State the effect of stretched tendons, State the effect of stretched tendon...

State the effect of stretched tendons The effect of stretched tendons inside the concrete components is just like a stretched spring. If a spring is stretched it would like to

Shear Iosipescu Test, First Can I use this device to test concrete specimen...

First Can I use this device to test concrete specimen? Second it is very important for me that wouldn’t have tensile strength when I want to fix specimens. Because the specimens su

Wrecked trusses and types of damages, Evaluation of various reports regardi...

Evaluation of various reports regarding the effects of earthquake on spatial trusses Types of damages According to the different types of damages, wrecked trusses can be d

Concrete, What practical steps can one take to mitigate the adverse effects...

What practical steps can one take to mitigate the adverse effects in using aggregates with higher than specified flakiness index in the production of concrete

Find out the joint distribution, Find out the joint distribution: Let ...

Find out the joint distribution: Let X I and X 2 be two independent random variables each distributed uniformly in the interval [ 0, a ], where a > 0 is a constant. Find out

Tests on bricks, Tests on Bricks The following laboratory tests can be...

Tests on Bricks The following laboratory tests can be conducted on the bricks to find their suitability: 1.    Crushing strength 2.    Absorption 3.    Shape and size

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