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

Design volume of the aeration basin - sewer construction, Design volume of ...

Design volume of the aeration basin - sewer construction: Problem: What is the design volume of the aeration basin? Solution Assuming that 30% of the plant influe

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

Explain brake and electrical horsepower, Explain Brake and Electrical Horse...

Explain Brake and Electrical Horsepower Brake horsepower (bhp) = whp/pump efficiency Electrical or motor horsepower (ehp) or (mhp) = bhp/motor efficiency Friction of heat

Brigdes, infomation about differnt brigdes

infomation about differnt brigdes

Determine the station and elevation of turning point, A -3.00% grade inters...

A -3.00% grade intersects a +1.25% grade at Sta. 85+80 and elevation 210.00 ft.  A 350-ft vertical curve connects the two grades.  Determine the station and elevation of turning po

Light and rapid rail transit, Light Rail Transit (LRT) Light Rail Tra...

Light Rail Transit (LRT) Light Rail Transit is also known by the name train. LRT can be run on the surface if road space is available (as in Kolkata) or as elevated, with pil

Simple bending, In case of simple bending after simply supported beam, deri...

In case of simple bending after simply supported beam, derive that M/I = s /y = E/R.

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