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

What is pratt truss, Q. What is Pratt truss? Pratt truss is characteriz...

Q. What is Pratt truss? Pratt truss is characterized by having its diagonal members (except the end diagonals) slanted down towards the middle of bridge span. Under such struct

Geotechnical, send any civil engineering related questions . i will write t...

send any civil engineering related questions . i will write the answers , please tell us the process .

What is objective method of assessment, Q. What is objective method of asse...

Q. What is objective method of assessment? Track recording consists of objective method of assessment of the quality of track with the help of sophisticated equipments. A conti

Explain some points regarding to hardness, Explain Some Points regarding to...

Explain Some Points regarding to Hardness 1) Hardness removal using lime and soda is based on the solubility reactions of calcium carbonate, CaCO 3 and magnesium hydroxide, Mg

Piling wall, explain about forces acting on a piling wall

explain about forces acting on a piling wall

Formation of holes in pipelines, Question While branch pipelines are co...

Question While branch pipelines are connected to pipelines, now and then Y-junctions or fitting branched pipelines to key pipelines by formation of holes in pipelines are u

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