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

Illustrate the concept of load balancing, Concept of load balancing In ...

Concept of load balancing In above cases of concentric and eccentric pre-stressing, straight tendon profiles (or tendon shapes) along the beam span have been considered. If a t

Timber grading, IS 883-1970 classifies the structural timber into 3 grades-...

IS 883-1970 classifies the structural timber into 3 grades-select grade, grade I and grade II

Softening point of bitumen, Hi, i need discussion for softening point of bi...

Hi, i need discussion for softening point of bitumen 7.5 ?C

Maintenance of gravel roads, Maintenance of Gravel Roads: The mainten...

Maintenance of Gravel Roads: The maintenance consists of : filling up of potholes/depressions with fresh gravel and compacting after light sprinkling with water. g

Steel truss 15 m span, types of truss of 15 m cantilever with 1000 kg on fr...

types of truss of 15 m cantilever with 1000 kg on free end. May be steel or any lightest material aluminium anodized truss. thanks

Calculate benefit cost ratio of most cost effective device, A city is tryin...

A city is trying to decide which of two traffic devices to install. Device A costs $1000 and has useful life of five years.  Device A can be expected to result in $300 savings annu

What should be the hydrometer reading, A litre of suspension containing 0.5...

A litre of suspension containing 0.5 N of soil with a specific gravity of 2.70 is prepared for a hydrometer test. When no temperature correction is considered necessary, what shoul

Sieve analysis - soil mechanics and foundations, Sieve Analysis - Soil Mech...

Sieve Analysis - Soil Mechanics and Foundations a. Sieve Analysis used to obtain the grain size distribution of coarse-grained soils (sands and gravels) larger than 0.075 mm (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