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 of elastomeric bearings, Q. Design of elastomeric bearings? The ...

Q. Design of elastomeric bearings? The standard drawings of bridge bearings issued by RDSO are on the basis of UIC 772-R. To maintain uniformity of approach, the design of elas

Errors in leveling, what is the errors faced in leveling servey

what is the errors faced in leveling servey

Main function of followers in driven h-piles, Question What is main fun...

Question What is main function of followers in driven H-piles ? Answer A follower is an extension between pile head and hammers which transfers blow to pile in which

Mechanics, How to prove varignon theorem in easiest way

How to prove varignon theorem in easiest way

Estimation of design flood discharge, Q. Estimation of design flood dischar...

Q. Estimation of design flood discharge? These methods are also in vogue for estimating maximum discharge. Discharge estimated using the above three methods may be compared wit

Stress analysis, • The previous load analysis represents a first and necess...

• The previous load analysis represents a first and necessary step in the analysis of the given structure but it does not tell us whether the given load can be safely supported (i.

Define emerging trends in bearings, Define Emerging Trends in Bearings? ...

Define Emerging Trends in Bearings? New innovations have taken place in the area of bridge bearings, notable among them are: (1) Shock Transmission Unit (STU) or Lock Up Dev

What are aquifers - hydraulics system, What are Aquifers? Water bearing...

What are Aquifers? Water bearing, underground geologic formations. The subsurface formations are composed of soils and rocks with voids saturated with water.

Maintenance of concrete roads, Maintenance of Concrete Roads: The mai...

Maintenance of Concrete Roads: The main defects that show up in a concrete road are : (a) cracks (b) loss of sealant (c) spalling at joints (d) loss of texture

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