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

Uses of bricks, Uses of Bricks In the following civil works Bricks are ...

Uses of Bricks In the following civil works Bricks are used: a. in building blocks. b. For lining of ovens, chimneys and furnaces. c. As aggregates in providing water

Pavement width - geometric design of roads, Pavement Width: The pavem...

Pavement Width: The pavement widths commonly adopted are : Single lane                 :           3.75 m Intermediate lane     :           5.5 m Two lane

Major drawbacks of using inverted siphons, Question What is key application...

Question What is key application of inverted siphons? What are major drawbacks of using inverted siphons ? Answer Inverted siphons are planned at locations in which sewer s

Foundation, classification of foundation

classification of foundation

Pavement design, differences between highway pavement and airfield pavement...

differences between highway pavement and airfield pavement

Define latitude - transportation, Define Latitude - Transportation Lati...

Define Latitude - Transportation Latitude of a line is the distance that the line extends in a north or south direction. A line that runs towards north has positive latitude; a

Major bridge and important bridge, Major bridge - Major bridge is one of wh...

Major bridge - Major bridge is one of which has a total linear waterway of 18 m or more for multiple span and total linear water way of 12 m or more for single span. Important b

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