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

Define influence lines, Define Influence lines Provides information...

Define Influence lines Provides information at a single point on a beam Can be used for: - Reactions - Internal shear forces - Internal moment Indicate

Assignment., classification and characterstics of lintels

classification and characterstics of lintels

Define fixed instrumentation - sounding or sensing devices, Define Fixed in...

Define Fixed instrumentation - Sounding or Sensing Devices? It is possible to monitor local scour at pier or abutment using fixed instrumentation as an alternative to the sound

Hybridisation, Why hybridisation never take in isolated atom

Why hybridisation never take in isolated atom

Topographical survey and preparation of drawings, Topographical Survey and ...

Topographical Survey and Preparation of Drawings: Topographical Survey for a road project consists of three sequential stages: (a) Reconnaissance Survey, including a study

Tension member, Explain various forms of tension members.

Explain various forms of tension members.

Concrete, types of concrete and its uses

types of concrete and its uses

Plastic, what is plastic?its types and composition and its uses as engineer...

what is plastic?its types and composition and its uses as engineering material

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