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

Explain precedence relationships - construction management, Explain the Pre...

Explain the Precedence Relationships a. Finish-to-Start - the most common, the predecessor activity must finish before the successor activity can start b. Finish to Finish

Soil particles for geotechnical design, Question Will it worthwhile to ...

Question Will it worthwhile to take out tests on particle density of soil particles for geotechnical design? Answer Particle density of soils is definite by ratio of

Explain the scaling - underwater inspection of bridges, Explain the Scaling...

Explain the Scaling - underwater inspection of bridges? Scaling is the gradual and continuing loss of the surface mortar and aggregate over an area. This condition is commonly

Design of steel structure, in compression member [strut] why no deduction o...

in compression member [strut] why no deduction of area of rivet hole?

Rmc, about rmc and what are the safety measures taken and which licences ar...

about rmc and what are the safety measures taken and which licences are required

Instruments, description and details about distomat

description and details about distomat

Survey, 3-d figure of line ranger

3-d figure of line ranger

WMM, what is wmm what are all the uses of that wmm

what is wmm what are all the uses of that wmm

Explain horizontal circular curves - transportation, Explain Horizontal Cir...

Explain Horizontal Circular Curves - Transportation Horizontal circular curve is a circular arc between two straight lines known as tangents.

Physical classification of stones, Physical Classification Based on the...

Physical Classification Based on the structure, the rocks can be classified as following: Stratified rocks Un -stratified rocks A.   Stratified Rocks: These ro

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