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

Higway engineering, Ask question Design the pavement by group index method ...

Ask question Design the pavement by group index method for heavy traffic using following subgrade data Soil passing 75micron sieve =65%,liquid limit =40%plastic limit =20% #Min

What are the applications of modulus of elasticity, As the term implies, "M...

As the term implies, "Modulus of Elasticity" shows to the elasticity or "flexibility" of a material. The value of modulus of elasticity is very much important relating to deflectio

Trigonometry, #question a pilot entering a bay on course 60.3 degrees at sp...

#question a pilot entering a bay on course 60.3 degrees at speed 12 miles per hour sees a light bearing 37.3 true and 20 minutes later he sees it bearing 20.0 degrees true. if he k

Mr Kamal Saxena, What is WBM road. How it is constructed?

What is WBM road. How it is constructed?

Determine the co-ordinates of grain-size distribution curve, In a hydromete...

In a hydrometer analysis, 0.5 N of soil was mixed in water to form one litre of uniform suspen- sion. The corrected hydrometer reading after a lapse of 60 min. from the start of se

Whole barings, Ask question #Minexaple of wholeiwhole baring 100 words acce...

Ask question #Minexaple of wholeiwhole baring 100 words accepted#

Strength of Materials, How can I get theratio of the maximum deflections of...

How can I get theratio of the maximum deflections of a beam simply supported at its ends with an isolated central load and that of with a uniformly distributed load over its entire

Determine the grain exact gravity, (i) A dry soil has a void ratio of 0.65 ...

(i) A dry soil has a void ratio of 0.65 and its grain exact gravity is = 2.80. What is its unit weight? (ii) Water is added to the sample so that its degree of saturation is 60%

Write short note on pressure filter, Q. Write short notes on Pressure filte...

Q. Write short notes on Pressure filter for drinking water supply. What are pressure filters and what are its advantages / disadvantages over the normal filter bed. What is p

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